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https://github.com/ruby/ruby.git
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4552 lines
116 KiB
C
4552 lines
116 KiB
C
/**********************************************************************
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re.c -
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$Author$
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created at: Mon Aug 9 18:24:49 JST 1993
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Copyright (C) 1993-2007 Yukihiro Matsumoto
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**********************************************************************/
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#include "ruby/internal/config.h"
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#include <ctype.h>
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#include "encindex.h"
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#include "hrtime.h"
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#include "internal.h"
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#include "internal/hash.h"
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#include "internal/imemo.h"
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#include "internal/re.h"
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#include "internal/string.h"
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#include "internal/object.h"
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#include "internal/ractor.h"
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#include "internal/variable.h"
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#include "regint.h"
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#include "ruby/encoding.h"
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#include "ruby/re.h"
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#include "ruby/util.h"
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VALUE rb_eRegexpError, rb_eRegexpTimeoutError;
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typedef char onig_errmsg_buffer[ONIG_MAX_ERROR_MESSAGE_LEN];
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#define errcpy(err, msg) strlcpy((err), (msg), ONIG_MAX_ERROR_MESSAGE_LEN)
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#define BEG(no) (regs->beg[(no)])
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#define END(no) (regs->end[(no)])
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#if 'a' == 97 /* it's ascii */
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static const char casetable[] = {
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'\000', '\001', '\002', '\003', '\004', '\005', '\006', '\007',
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'\010', '\011', '\012', '\013', '\014', '\015', '\016', '\017',
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'\020', '\021', '\022', '\023', '\024', '\025', '\026', '\027',
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'\030', '\031', '\032', '\033', '\034', '\035', '\036', '\037',
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/* ' ' '!' '"' '#' '$' '%' '&' ''' */
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'\040', '\041', '\042', '\043', '\044', '\045', '\046', '\047',
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/* '(' ')' '*' '+' ',' '-' '.' '/' */
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'\050', '\051', '\052', '\053', '\054', '\055', '\056', '\057',
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/* '0' '1' '2' '3' '4' '5' '6' '7' */
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'\060', '\061', '\062', '\063', '\064', '\065', '\066', '\067',
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/* '8' '9' ':' ';' '<' '=' '>' '?' */
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'\070', '\071', '\072', '\073', '\074', '\075', '\076', '\077',
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/* '@' 'A' 'B' 'C' 'D' 'E' 'F' 'G' */
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'\100', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
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/* 'H' 'I' 'J' 'K' 'L' 'M' 'N' 'O' */
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'\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
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/* 'P' 'Q' 'R' 'S' 'T' 'U' 'V' 'W' */
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'\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
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/* 'X' 'Y' 'Z' '[' '\' ']' '^' '_' */
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'\170', '\171', '\172', '\133', '\134', '\135', '\136', '\137',
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/* '`' 'a' 'b' 'c' 'd' 'e' 'f' 'g' */
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'\140', '\141', '\142', '\143', '\144', '\145', '\146', '\147',
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/* 'h' 'i' 'j' 'k' 'l' 'm' 'n' 'o' */
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'\150', '\151', '\152', '\153', '\154', '\155', '\156', '\157',
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/* 'p' 'q' 'r' 's' 't' 'u' 'v' 'w' */
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'\160', '\161', '\162', '\163', '\164', '\165', '\166', '\167',
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/* 'x' 'y' 'z' '{' '|' '}' '~' */
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'\170', '\171', '\172', '\173', '\174', '\175', '\176', '\177',
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'\200', '\201', '\202', '\203', '\204', '\205', '\206', '\207',
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'\210', '\211', '\212', '\213', '\214', '\215', '\216', '\217',
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'\220', '\221', '\222', '\223', '\224', '\225', '\226', '\227',
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'\230', '\231', '\232', '\233', '\234', '\235', '\236', '\237',
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'\240', '\241', '\242', '\243', '\244', '\245', '\246', '\247',
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'\250', '\251', '\252', '\253', '\254', '\255', '\256', '\257',
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'\260', '\261', '\262', '\263', '\264', '\265', '\266', '\267',
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'\270', '\271', '\272', '\273', '\274', '\275', '\276', '\277',
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'\300', '\301', '\302', '\303', '\304', '\305', '\306', '\307',
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'\310', '\311', '\312', '\313', '\314', '\315', '\316', '\317',
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'\320', '\321', '\322', '\323', '\324', '\325', '\326', '\327',
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'\330', '\331', '\332', '\333', '\334', '\335', '\336', '\337',
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'\340', '\341', '\342', '\343', '\344', '\345', '\346', '\347',
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'\350', '\351', '\352', '\353', '\354', '\355', '\356', '\357',
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'\360', '\361', '\362', '\363', '\364', '\365', '\366', '\367',
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'\370', '\371', '\372', '\373', '\374', '\375', '\376', '\377',
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};
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#else
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# error >>> "You lose. You will need a translation table for your character set." <<<
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#endif
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int
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rb_memcicmp(const void *x, const void *y, long len)
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{
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const unsigned char *p1 = x, *p2 = y;
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int tmp;
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while (len--) {
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if ((tmp = casetable[(unsigned)*p1++] - casetable[(unsigned)*p2++]))
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return tmp;
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}
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return 0;
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}
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#ifdef HAVE_MEMMEM
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static inline long
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rb_memsearch_ss(const unsigned char *xs, long m, const unsigned char *ys, long n)
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{
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const unsigned char *y;
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if ((y = memmem(ys, n, xs, m)) != NULL)
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return y - ys;
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else
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return -1;
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}
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#else
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static inline long
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rb_memsearch_ss(const unsigned char *xs, long m, const unsigned char *ys, long n)
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{
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const unsigned char *x = xs, *xe = xs + m;
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const unsigned char *y = ys, *ye = ys + n;
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#define VALUE_MAX ((VALUE)~(VALUE)0)
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VALUE hx, hy, mask = VALUE_MAX >> ((SIZEOF_VALUE - m) * CHAR_BIT);
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if (m > SIZEOF_VALUE)
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rb_bug("!!too long pattern string!!");
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if (!(y = memchr(y, *x, n - m + 1)))
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return -1;
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/* Prepare hash value */
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for (hx = *x++, hy = *y++; x < xe; ++x, ++y) {
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hx <<= CHAR_BIT;
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hy <<= CHAR_BIT;
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hx |= *x;
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hy |= *y;
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}
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/* Searching */
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while (hx != hy) {
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if (y == ye)
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return -1;
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hy <<= CHAR_BIT;
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hy |= *y;
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hy &= mask;
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y++;
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}
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return y - ys - m;
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}
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#endif
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static inline long
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rb_memsearch_qs(const unsigned char *xs, long m, const unsigned char *ys, long n)
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{
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const unsigned char *x = xs, *xe = xs + m;
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const unsigned char *y = ys;
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VALUE i, qstable[256];
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/* Preprocessing */
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for (i = 0; i < 256; ++i)
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qstable[i] = m + 1;
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for (; x < xe; ++x)
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qstable[*x] = xe - x;
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/* Searching */
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for (; y + m <= ys + n; y += *(qstable + y[m])) {
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if (*xs == *y && memcmp(xs, y, m) == 0)
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return y - ys;
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}
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return -1;
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}
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static inline unsigned int
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rb_memsearch_qs_utf8_hash(const unsigned char *x)
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{
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register const unsigned int mix = 8353;
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register unsigned int h = *x;
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if (h < 0xC0) {
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return h + 256;
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}
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else if (h < 0xE0) {
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h *= mix;
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h += x[1];
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}
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else if (h < 0xF0) {
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h *= mix;
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h += x[1];
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h *= mix;
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h += x[2];
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}
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else if (h < 0xF5) {
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h *= mix;
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h += x[1];
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h *= mix;
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h += x[2];
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h *= mix;
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h += x[3];
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}
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else {
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return h + 256;
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}
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return (unsigned char)h;
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}
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static inline long
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rb_memsearch_qs_utf8(const unsigned char *xs, long m, const unsigned char *ys, long n)
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{
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const unsigned char *x = xs, *xe = xs + m;
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const unsigned char *y = ys;
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VALUE i, qstable[512];
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/* Preprocessing */
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for (i = 0; i < 512; ++i) {
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qstable[i] = m + 1;
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}
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for (; x < xe; ++x) {
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qstable[rb_memsearch_qs_utf8_hash(x)] = xe - x;
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}
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/* Searching */
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for (; y + m <= ys + n; y += qstable[rb_memsearch_qs_utf8_hash(y+m)]) {
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if (*xs == *y && memcmp(xs, y, m) == 0)
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return y - ys;
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}
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return -1;
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}
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static inline long
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rb_memsearch_wchar(const unsigned char *xs, long m, const unsigned char *ys, long n)
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{
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const unsigned char *x = xs, x0 = *xs, *y = ys;
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enum {char_size = 2};
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for (n -= m; n >= 0; n -= char_size, y += char_size) {
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if (x0 == *y && memcmp(x+1, y+1, m-1) == 0)
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return y - ys;
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}
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return -1;
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}
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static inline long
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rb_memsearch_qchar(const unsigned char *xs, long m, const unsigned char *ys, long n)
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{
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const unsigned char *x = xs, x0 = *xs, *y = ys;
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enum {char_size = 4};
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for (n -= m; n >= 0; n -= char_size, y += char_size) {
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if (x0 == *y && memcmp(x+1, y+1, m-1) == 0)
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return y - ys;
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}
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return -1;
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}
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long
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rb_memsearch(const void *x0, long m, const void *y0, long n, rb_encoding *enc)
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{
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const unsigned char *x = x0, *y = y0;
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if (m > n) return -1;
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else if (m == n) {
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return memcmp(x0, y0, m) == 0 ? 0 : -1;
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}
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else if (m < 1) {
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return 0;
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}
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else if (m == 1) {
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const unsigned char *ys = memchr(y, *x, n);
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if (ys)
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return ys - y;
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else
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return -1;
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}
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else if (LIKELY(rb_enc_mbminlen(enc) == 1)) {
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if (m <= SIZEOF_VALUE) {
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return rb_memsearch_ss(x0, m, y0, n);
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}
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else if (enc == rb_utf8_encoding()){
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return rb_memsearch_qs_utf8(x0, m, y0, n);
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}
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}
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else if (LIKELY(rb_enc_mbminlen(enc) == 2)) {
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return rb_memsearch_wchar(x0, m, y0, n);
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}
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else if (LIKELY(rb_enc_mbminlen(enc) == 4)) {
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return rb_memsearch_qchar(x0, m, y0, n);
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}
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return rb_memsearch_qs(x0, m, y0, n);
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}
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#define REG_LITERAL FL_USER5
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#define REG_ENCODING_NONE FL_USER6
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#define KCODE_FIXED FL_USER4
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#define ARG_REG_OPTION_MASK \
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(ONIG_OPTION_IGNORECASE|ONIG_OPTION_MULTILINE|ONIG_OPTION_EXTEND)
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#define ARG_ENCODING_FIXED 16
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#define ARG_ENCODING_NONE 32
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static int
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char_to_option(int c)
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{
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int val;
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switch (c) {
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case 'i':
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val = ONIG_OPTION_IGNORECASE;
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break;
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case 'x':
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val = ONIG_OPTION_EXTEND;
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break;
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case 'm':
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val = ONIG_OPTION_MULTILINE;
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break;
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default:
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val = 0;
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break;
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}
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return val;
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}
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enum { OPTBUF_SIZE = 4 };
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static char *
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option_to_str(char str[OPTBUF_SIZE], int options)
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{
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char *p = str;
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if (options & ONIG_OPTION_MULTILINE) *p++ = 'm';
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if (options & ONIG_OPTION_IGNORECASE) *p++ = 'i';
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if (options & ONIG_OPTION_EXTEND) *p++ = 'x';
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*p = 0;
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return str;
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}
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extern int
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rb_char_to_option_kcode(int c, int *option, int *kcode)
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{
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*option = 0;
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switch (c) {
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case 'n':
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*kcode = rb_ascii8bit_encindex();
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return (*option = ARG_ENCODING_NONE);
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case 'e':
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*kcode = ENCINDEX_EUC_JP;
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break;
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case 's':
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*kcode = ENCINDEX_Windows_31J;
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break;
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case 'u':
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*kcode = rb_utf8_encindex();
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break;
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default:
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*kcode = -1;
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return (*option = char_to_option(c));
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}
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*option = ARG_ENCODING_FIXED;
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return 1;
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}
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static void
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rb_reg_check(VALUE re)
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{
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if (!RREGEXP_PTR(re) || !RREGEXP_SRC(re) || !RREGEXP_SRC_PTR(re)) {
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rb_raise(rb_eTypeError, "uninitialized Regexp");
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}
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}
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static void
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rb_reg_expr_str(VALUE str, const char *s, long len,
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rb_encoding *enc, rb_encoding *resenc, int term)
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{
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const char *p, *pend;
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int cr = ENC_CODERANGE_UNKNOWN;
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int need_escape = 0;
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int c, clen;
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p = s; pend = p + len;
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rb_str_coderange_scan_restartable(p, pend, enc, &cr);
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if (rb_enc_asciicompat(enc) && ENC_CODERANGE_CLEAN_P(cr)) {
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while (p < pend) {
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c = rb_enc_ascget(p, pend, &clen, enc);
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if (c == -1) {
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if (enc == resenc) {
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p += mbclen(p, pend, enc);
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}
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else {
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need_escape = 1;
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break;
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}
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}
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else if (c != term && rb_enc_isprint(c, enc)) {
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p += clen;
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}
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else {
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need_escape = 1;
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break;
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}
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}
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}
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else {
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need_escape = 1;
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}
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if (!need_escape) {
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rb_str_buf_cat(str, s, len);
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}
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else {
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int unicode_p = rb_enc_unicode_p(enc);
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p = s;
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while (p<pend) {
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c = rb_enc_ascget(p, pend, &clen, enc);
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if (c == '\\' && p+clen < pend) {
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int n = clen + mbclen(p+clen, pend, enc);
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rb_str_buf_cat(str, p, n);
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p += n;
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continue;
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}
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else if (c == -1) {
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clen = rb_enc_precise_mbclen(p, pend, enc);
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if (!MBCLEN_CHARFOUND_P(clen)) {
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c = (unsigned char)*p;
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clen = 1;
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goto hex;
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}
|
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if (resenc) {
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unsigned int c = rb_enc_mbc_to_codepoint(p, pend, enc);
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rb_str_buf_cat_escaped_char(str, c, unicode_p);
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}
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else {
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clen = MBCLEN_CHARFOUND_LEN(clen);
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rb_str_buf_cat(str, p, clen);
|
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}
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}
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else if (c == term) {
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char c = '\\';
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rb_str_buf_cat(str, &c, 1);
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rb_str_buf_cat(str, p, clen);
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}
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else if (rb_enc_isprint(c, enc)) {
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rb_str_buf_cat(str, p, clen);
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}
|
|
else if (!rb_enc_isspace(c, enc)) {
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char b[8];
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hex:
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snprintf(b, sizeof(b), "\\x%02X", c);
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rb_str_buf_cat(str, b, 4);
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}
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else {
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rb_str_buf_cat(str, p, clen);
|
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}
|
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p += clen;
|
|
}
|
|
}
|
|
}
|
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|
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static VALUE
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rb_reg_desc(const char *s, long len, VALUE re)
|
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{
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rb_encoding *enc = rb_enc_get(re);
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VALUE str = rb_str_buf_new2("/");
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rb_encoding *resenc = rb_default_internal_encoding();
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if (resenc == NULL) resenc = rb_default_external_encoding();
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if (re && rb_enc_asciicompat(enc)) {
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rb_enc_copy(str, re);
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}
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else {
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rb_enc_associate(str, rb_usascii_encoding());
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}
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rb_reg_expr_str(str, s, len, enc, resenc, '/');
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rb_str_buf_cat2(str, "/");
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if (re) {
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char opts[OPTBUF_SIZE];
|
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rb_reg_check(re);
|
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if (*option_to_str(opts, RREGEXP_PTR(re)->options))
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rb_str_buf_cat2(str, opts);
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if (RBASIC(re)->flags & REG_ENCODING_NONE)
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rb_str_buf_cat2(str, "n");
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}
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return str;
|
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}
|
|
|
|
|
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/*
|
|
* call-seq:
|
|
* source -> string
|
|
*
|
|
* Returns the original string of +self+:
|
|
*
|
|
* /ab+c/ix.source # => "ab+c"
|
|
*
|
|
* Regexp escape sequences are retained:
|
|
*
|
|
* /\x20\+/.source # => "\\x20\\+"
|
|
*
|
|
* Lexer escape characters are not retained:
|
|
*
|
|
* /\//.source # => "/"
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_source(VALUE re)
|
|
{
|
|
VALUE str;
|
|
|
|
rb_reg_check(re);
|
|
str = rb_str_dup(RREGEXP_SRC(re));
|
|
return str;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* inspect -> string
|
|
*
|
|
* Returns a nicely-formatted string representation of +self+:
|
|
*
|
|
* /ab+c/ix.inspect # => "/ab+c/ix"
|
|
*
|
|
* Related: Regexp#to_s.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_inspect(VALUE re)
|
|
{
|
|
if (!RREGEXP_PTR(re) || !RREGEXP_SRC(re) || !RREGEXP_SRC_PTR(re)) {
|
|
return rb_any_to_s(re);
|
|
}
|
|
return rb_reg_desc(RREGEXP_SRC_PTR(re), RREGEXP_SRC_LEN(re), re);
|
|
}
|
|
|
|
static VALUE rb_reg_str_with_term(VALUE re, int term);
|
|
|
|
/*
|
|
* call-seq:
|
|
* to_s -> string
|
|
*
|
|
* Returns a string showing the options and string of +self+:
|
|
*
|
|
* r0 = /ab+c/ix
|
|
* s0 = r0.to_s # => "(?ix-m:ab+c)"
|
|
*
|
|
* The returned string may be used as an argument to Regexp.new,
|
|
* or as interpolated text for a
|
|
* {Regexp literal}[rdoc-ref:regexp.rdoc@Regexp+Literal]:
|
|
*
|
|
* r1 = Regexp.new(s0) # => /(?ix-m:ab+c)/
|
|
* r2 = /#{s0}/ # => /(?ix-m:ab+c)/
|
|
*
|
|
* Note that +r1+ and +r2+ are not equal to +r0+
|
|
* because their original strings are different:
|
|
*
|
|
* r0 == r1 # => false
|
|
* r0.source # => "ab+c"
|
|
* r1.source # => "(?ix-m:ab+c)"
|
|
*
|
|
* Related: Regexp#inspect.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_to_s(VALUE re)
|
|
{
|
|
return rb_reg_str_with_term(re, '/');
|
|
}
|
|
|
|
static VALUE
|
|
rb_reg_str_with_term(VALUE re, int term)
|
|
{
|
|
int options, opt;
|
|
const int embeddable = ONIG_OPTION_MULTILINE|ONIG_OPTION_IGNORECASE|ONIG_OPTION_EXTEND;
|
|
long len;
|
|
const UChar* ptr;
|
|
VALUE str = rb_str_buf_new2("(?");
|
|
char optbuf[OPTBUF_SIZE + 1]; /* for '-' */
|
|
rb_encoding *enc = rb_enc_get(re);
|
|
|
|
rb_reg_check(re);
|
|
|
|
rb_enc_copy(str, re);
|
|
options = RREGEXP_PTR(re)->options;
|
|
ptr = (UChar*)RREGEXP_SRC_PTR(re);
|
|
len = RREGEXP_SRC_LEN(re);
|
|
again:
|
|
if (len >= 4 && ptr[0] == '(' && ptr[1] == '?') {
|
|
int err = 1;
|
|
ptr += 2;
|
|
if ((len -= 2) > 0) {
|
|
do {
|
|
opt = char_to_option((int )*ptr);
|
|
if (opt != 0) {
|
|
options |= opt;
|
|
}
|
|
else {
|
|
break;
|
|
}
|
|
++ptr;
|
|
} while (--len > 0);
|
|
}
|
|
if (len > 1 && *ptr == '-') {
|
|
++ptr;
|
|
--len;
|
|
do {
|
|
opt = char_to_option((int )*ptr);
|
|
if (opt != 0) {
|
|
options &= ~opt;
|
|
}
|
|
else {
|
|
break;
|
|
}
|
|
++ptr;
|
|
} while (--len > 0);
|
|
}
|
|
if (*ptr == ')') {
|
|
--len;
|
|
++ptr;
|
|
goto again;
|
|
}
|
|
if (*ptr == ':' && ptr[len-1] == ')') {
|
|
Regexp *rp;
|
|
VALUE verbose = ruby_verbose;
|
|
ruby_verbose = Qfalse;
|
|
|
|
++ptr;
|
|
len -= 2;
|
|
err = onig_new(&rp, ptr, ptr + len, options,
|
|
enc, OnigDefaultSyntax, NULL);
|
|
onig_free(rp);
|
|
ruby_verbose = verbose;
|
|
}
|
|
if (err) {
|
|
options = RREGEXP_PTR(re)->options;
|
|
ptr = (UChar*)RREGEXP_SRC_PTR(re);
|
|
len = RREGEXP_SRC_LEN(re);
|
|
}
|
|
}
|
|
|
|
if (*option_to_str(optbuf, options)) rb_str_buf_cat2(str, optbuf);
|
|
|
|
if ((options & embeddable) != embeddable) {
|
|
optbuf[0] = '-';
|
|
option_to_str(optbuf + 1, ~options);
|
|
rb_str_buf_cat2(str, optbuf);
|
|
}
|
|
|
|
rb_str_buf_cat2(str, ":");
|
|
if (rb_enc_asciicompat(enc)) {
|
|
rb_reg_expr_str(str, (char*)ptr, len, enc, NULL, term);
|
|
rb_str_buf_cat2(str, ")");
|
|
}
|
|
else {
|
|
const char *s, *e;
|
|
char *paren;
|
|
ptrdiff_t n;
|
|
rb_str_buf_cat2(str, ")");
|
|
rb_enc_associate(str, rb_usascii_encoding());
|
|
str = rb_str_encode(str, rb_enc_from_encoding(enc), 0, Qnil);
|
|
|
|
/* backup encoded ")" to paren */
|
|
s = RSTRING_PTR(str);
|
|
e = RSTRING_END(str);
|
|
s = rb_enc_left_char_head(s, e-1, e, enc);
|
|
n = e - s;
|
|
paren = ALLOCA_N(char, n);
|
|
memcpy(paren, s, n);
|
|
rb_str_resize(str, RSTRING_LEN(str) - n);
|
|
|
|
rb_reg_expr_str(str, (char*)ptr, len, enc, NULL, term);
|
|
rb_str_buf_cat(str, paren, n);
|
|
}
|
|
rb_enc_copy(str, re);
|
|
|
|
return str;
|
|
}
|
|
|
|
NORETURN(static void rb_reg_raise(const char *s, long len, const char *err, VALUE re));
|
|
|
|
static void
|
|
rb_reg_raise(const char *s, long len, const char *err, VALUE re)
|
|
{
|
|
VALUE desc = rb_reg_desc(s, len, re);
|
|
|
|
rb_raise(rb_eRegexpError, "%s: %"PRIsVALUE, err, desc);
|
|
}
|
|
|
|
static VALUE
|
|
rb_enc_reg_error_desc(const char *s, long len, rb_encoding *enc, int options, const char *err)
|
|
{
|
|
char opts[OPTBUF_SIZE + 1]; /* for '/' */
|
|
VALUE desc = rb_str_buf_new2(err);
|
|
rb_encoding *resenc = rb_default_internal_encoding();
|
|
if (resenc == NULL) resenc = rb_default_external_encoding();
|
|
|
|
rb_enc_associate(desc, enc);
|
|
rb_str_buf_cat2(desc, ": /");
|
|
rb_reg_expr_str(desc, s, len, enc, resenc, '/');
|
|
opts[0] = '/';
|
|
option_to_str(opts + 1, options);
|
|
rb_str_buf_cat2(desc, opts);
|
|
return rb_exc_new3(rb_eRegexpError, desc);
|
|
}
|
|
|
|
NORETURN(static void rb_enc_reg_raise(const char *s, long len, rb_encoding *enc, int options, const char *err));
|
|
|
|
static void
|
|
rb_enc_reg_raise(const char *s, long len, rb_encoding *enc, int options, const char *err)
|
|
{
|
|
rb_exc_raise(rb_enc_reg_error_desc(s, len, enc, options, err));
|
|
}
|
|
|
|
static VALUE
|
|
rb_reg_error_desc(VALUE str, int options, const char *err)
|
|
{
|
|
return rb_enc_reg_error_desc(RSTRING_PTR(str), RSTRING_LEN(str),
|
|
rb_enc_get(str), options, err);
|
|
}
|
|
|
|
NORETURN(static void rb_reg_raise_str(VALUE str, int options, const char *err));
|
|
|
|
static void
|
|
rb_reg_raise_str(VALUE str, int options, const char *err)
|
|
{
|
|
rb_exc_raise(rb_reg_error_desc(str, options, err));
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* casefold?-> true or false
|
|
*
|
|
* Returns +true+ if the case-insensitivity flag in +self+ is set,
|
|
* +false+ otherwise:
|
|
*
|
|
* /a/.casefold? # => false
|
|
* /a/i.casefold? # => true
|
|
* /(?i:a)/.casefold? # => false
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_casefold_p(VALUE re)
|
|
{
|
|
rb_reg_check(re);
|
|
return RBOOL(RREGEXP_PTR(re)->options & ONIG_OPTION_IGNORECASE);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* options -> integer
|
|
*
|
|
* Returns an integer whose bits show the options set in +self+.
|
|
*
|
|
* The option bits are:
|
|
*
|
|
* Regexp::IGNORECASE # => 1
|
|
* Regexp::EXTENDED # => 2
|
|
* Regexp::MULTILINE # => 4
|
|
*
|
|
* Examples:
|
|
*
|
|
* /foo/.options # => 0
|
|
* /foo/i.options # => 1
|
|
* /foo/x.options # => 2
|
|
* /foo/m.options # => 4
|
|
* /foo/mix.options # => 7
|
|
*
|
|
* Note that additional bits may be set in the returned integer;
|
|
* these are maintained internally internally in +self+,
|
|
* are ignored if passed to Regexp.new, and may be ignored by the caller:
|
|
*
|
|
* Returns the set of bits corresponding to the options used when
|
|
* creating this regexp (see Regexp::new for details). Note that
|
|
* additional bits may be set in the returned options: these are used
|
|
* internally by the regular expression code. These extra bits are
|
|
* ignored if the options are passed to Regexp::new:
|
|
*
|
|
* r = /\xa1\xa2/e # => /\xa1\xa2/
|
|
* r.source # => "\\xa1\\xa2"
|
|
* r.options # => 16
|
|
* Regexp.new(r.source, r.options) # => /\xa1\xa2/
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_options_m(VALUE re)
|
|
{
|
|
int options = rb_reg_options(re);
|
|
return INT2NUM(options);
|
|
}
|
|
|
|
static int
|
|
reg_names_iter(const OnigUChar *name, const OnigUChar *name_end,
|
|
int back_num, int *back_refs, OnigRegex regex, void *arg)
|
|
{
|
|
VALUE ary = (VALUE)arg;
|
|
rb_ary_push(ary, rb_enc_str_new((const char *)name, name_end-name, regex->enc));
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* names -> array_of_names
|
|
*
|
|
* Returns an array of names of captures
|
|
* (see {Named Captures}[rdoc-ref:Regexp@Named+Captures]):
|
|
*
|
|
* /(?<foo>.)(?<bar>.)(?<baz>.)/.names # => ["foo", "bar", "baz"]
|
|
* /(?<foo>.)(?<foo>.)/.names # => ["foo"]
|
|
* /(.)(.)/.names # => []
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_names(VALUE re)
|
|
{
|
|
VALUE ary;
|
|
rb_reg_check(re);
|
|
ary = rb_ary_new_capa(onig_number_of_names(RREGEXP_PTR(re)));
|
|
onig_foreach_name(RREGEXP_PTR(re), reg_names_iter, (void*)ary);
|
|
return ary;
|
|
}
|
|
|
|
static int
|
|
reg_named_captures_iter(const OnigUChar *name, const OnigUChar *name_end,
|
|
int back_num, int *back_refs, OnigRegex regex, void *arg)
|
|
{
|
|
VALUE hash = (VALUE)arg;
|
|
VALUE ary = rb_ary_new2(back_num);
|
|
int i;
|
|
|
|
for (i = 0; i < back_num; i++)
|
|
rb_ary_store(ary, i, INT2NUM(back_refs[i]));
|
|
|
|
rb_hash_aset(hash, rb_str_new((const char*)name, name_end-name),ary);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* named_captures -> hash
|
|
*
|
|
* Returns a hash representing named captures of +self+
|
|
* (see {Named Captures}[rdoc-ref:Regexp@Named+Captures]):
|
|
*
|
|
* - Each key is the name of a named capture.
|
|
* - Each value is an array of integer indexes for that named capture.
|
|
*
|
|
* Examples:
|
|
*
|
|
* /(?<foo>.)(?<bar>.)/.named_captures # => {"foo"=>[1], "bar"=>[2]}
|
|
* /(?<foo>.)(?<foo>.)/.named_captures # => {"foo"=>[1, 2]}
|
|
* /(.)(.)/.named_captures # => {}
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_named_captures(VALUE re)
|
|
{
|
|
regex_t *reg = (rb_reg_check(re), RREGEXP_PTR(re));
|
|
VALUE hash = rb_hash_new_with_size(onig_number_of_names(reg));
|
|
onig_foreach_name(reg, reg_named_captures_iter, (void*)hash);
|
|
return hash;
|
|
}
|
|
|
|
static int
|
|
onig_new_with_source(regex_t** reg, const UChar* pattern, const UChar* pattern_end,
|
|
OnigOptionType option, OnigEncoding enc, const OnigSyntaxType* syntax,
|
|
OnigErrorInfo* einfo, const char *sourcefile, int sourceline)
|
|
{
|
|
int r;
|
|
|
|
*reg = (regex_t* )malloc(sizeof(regex_t));
|
|
if (IS_NULL(*reg)) return ONIGERR_MEMORY;
|
|
|
|
r = onig_reg_init(*reg, option, ONIGENC_CASE_FOLD_DEFAULT, enc, syntax);
|
|
if (r) goto err;
|
|
|
|
r = onig_compile_ruby(*reg, pattern, pattern_end, einfo, sourcefile, sourceline);
|
|
if (r) {
|
|
err:
|
|
onig_free(*reg);
|
|
*reg = NULL;
|
|
}
|
|
return r;
|
|
}
|
|
|
|
static Regexp*
|
|
make_regexp(const char *s, long len, rb_encoding *enc, int flags, onig_errmsg_buffer err,
|
|
const char *sourcefile, int sourceline)
|
|
{
|
|
Regexp *rp;
|
|
int r;
|
|
OnigErrorInfo einfo;
|
|
|
|
/* Handle escaped characters first. */
|
|
|
|
/* Build a copy of the string (in dest) with the
|
|
escaped characters translated, and generate the regex
|
|
from that.
|
|
*/
|
|
|
|
r = onig_new_with_source(&rp, (UChar*)s, (UChar*)(s + len), flags,
|
|
enc, OnigDefaultSyntax, &einfo, sourcefile, sourceline);
|
|
if (r) {
|
|
onig_error_code_to_str((UChar*)err, r, &einfo);
|
|
return 0;
|
|
}
|
|
return rp;
|
|
}
|
|
|
|
|
|
/*
|
|
* Document-class: MatchData
|
|
*
|
|
* MatchData encapsulates the result of matching a Regexp against
|
|
* string. It is returned by Regexp#match and String#match, and also
|
|
* stored in a global variable returned by Regexp.last_match.
|
|
*
|
|
* Usage:
|
|
*
|
|
* url = 'https://docs.ruby-lang.org/en/2.5.0/MatchData.html'
|
|
* m = url.match(/(\d\.?)+/) # => #<MatchData "2.5.0" 1:"0">
|
|
* m.string # => "https://docs.ruby-lang.org/en/2.5.0/MatchData.html"
|
|
* m.regexp # => /(\d\.?)+/
|
|
* # entire matched substring:
|
|
* m[0] # => "2.5.0"
|
|
*
|
|
* # Working with unnamed captures
|
|
* m = url.match(%r{([^/]+)/([^/]+)\.html$})
|
|
* m.captures # => ["2.5.0", "MatchData"]
|
|
* m[1] # => "2.5.0"
|
|
* m.values_at(1, 2) # => ["2.5.0", "MatchData"]
|
|
*
|
|
* # Working with named captures
|
|
* m = url.match(%r{(?<version>[^/]+)/(?<module>[^/]+)\.html$})
|
|
* m.captures # => ["2.5.0", "MatchData"]
|
|
* m.named_captures # => {"version"=>"2.5.0", "module"=>"MatchData"}
|
|
* m[:version] # => "2.5.0"
|
|
* m.values_at(:version, :module)
|
|
* # => ["2.5.0", "MatchData"]
|
|
* # Numerical indexes are working, too
|
|
* m[1] # => "2.5.0"
|
|
* m.values_at(1, 2) # => ["2.5.0", "MatchData"]
|
|
*
|
|
* == Global variables equivalence
|
|
*
|
|
* Parts of last MatchData (returned by Regexp.last_match) are also
|
|
* aliased as global variables:
|
|
*
|
|
* * <code>$~</code> is Regexp.last_match;
|
|
* * <code>$&</code> is Regexp.last_match<code>[ 0 ]</code>;
|
|
* * <code>$1</code>, <code>$2</code>, and so on are
|
|
* Regexp.last_match<code>[ i ]</code> (captures by number);
|
|
* * <code>$`</code> is Regexp.last_match<code>.pre_match</code>;
|
|
* * <code>$'</code> is Regexp.last_match<code>.post_match</code>;
|
|
* * <code>$+</code> is Regexp.last_match<code>[ -1 ]</code> (the last capture).
|
|
*
|
|
* See also "Special global variables" section in Regexp documentation.
|
|
*/
|
|
|
|
VALUE rb_cMatch;
|
|
|
|
static VALUE
|
|
match_alloc(VALUE klass)
|
|
{
|
|
NEWOBJ_OF(match, struct RMatch, klass, T_MATCH);
|
|
|
|
match->str = 0;
|
|
match->rmatch = 0;
|
|
match->regexp = 0;
|
|
match->rmatch = ZALLOC(struct rmatch);
|
|
|
|
return (VALUE)match;
|
|
}
|
|
|
|
int
|
|
rb_reg_region_copy(struct re_registers *to, const struct re_registers *from)
|
|
{
|
|
onig_region_copy(to, (OnigRegion *)from);
|
|
if (to->allocated) return 0;
|
|
rb_gc();
|
|
onig_region_copy(to, (OnigRegion *)from);
|
|
if (to->allocated) return 0;
|
|
return ONIGERR_MEMORY;
|
|
}
|
|
|
|
typedef struct {
|
|
long byte_pos;
|
|
long char_pos;
|
|
} pair_t;
|
|
|
|
static int
|
|
pair_byte_cmp(const void *pair1, const void *pair2)
|
|
{
|
|
long diff = ((pair_t*)pair1)->byte_pos - ((pair_t*)pair2)->byte_pos;
|
|
#if SIZEOF_LONG > SIZEOF_INT
|
|
return diff ? diff > 0 ? 1 : -1 : 0;
|
|
#else
|
|
return (int)diff;
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
update_char_offset(VALUE match)
|
|
{
|
|
struct rmatch *rm = RMATCH(match)->rmatch;
|
|
struct re_registers *regs;
|
|
int i, num_regs, num_pos;
|
|
long c;
|
|
char *s, *p, *q;
|
|
rb_encoding *enc;
|
|
pair_t *pairs;
|
|
|
|
if (rm->char_offset_num_allocated)
|
|
return;
|
|
|
|
regs = &rm->regs;
|
|
num_regs = rm->regs.num_regs;
|
|
|
|
if (rm->char_offset_num_allocated < num_regs) {
|
|
REALLOC_N(rm->char_offset, struct rmatch_offset, num_regs);
|
|
rm->char_offset_num_allocated = num_regs;
|
|
}
|
|
|
|
enc = rb_enc_get(RMATCH(match)->str);
|
|
if (rb_enc_mbmaxlen(enc) == 1) {
|
|
for (i = 0; i < num_regs; i++) {
|
|
rm->char_offset[i].beg = BEG(i);
|
|
rm->char_offset[i].end = END(i);
|
|
}
|
|
return;
|
|
}
|
|
|
|
pairs = ALLOCA_N(pair_t, num_regs*2);
|
|
num_pos = 0;
|
|
for (i = 0; i < num_regs; i++) {
|
|
if (BEG(i) < 0)
|
|
continue;
|
|
pairs[num_pos++].byte_pos = BEG(i);
|
|
pairs[num_pos++].byte_pos = END(i);
|
|
}
|
|
qsort(pairs, num_pos, sizeof(pair_t), pair_byte_cmp);
|
|
|
|
s = p = RSTRING_PTR(RMATCH(match)->str);
|
|
c = 0;
|
|
for (i = 0; i < num_pos; i++) {
|
|
q = s + pairs[i].byte_pos;
|
|
c += rb_enc_strlen(p, q, enc);
|
|
pairs[i].char_pos = c;
|
|
p = q;
|
|
}
|
|
|
|
for (i = 0; i < num_regs; i++) {
|
|
pair_t key, *found;
|
|
if (BEG(i) < 0) {
|
|
rm->char_offset[i].beg = -1;
|
|
rm->char_offset[i].end = -1;
|
|
continue;
|
|
}
|
|
|
|
key.byte_pos = BEG(i);
|
|
found = bsearch(&key, pairs, num_pos, sizeof(pair_t), pair_byte_cmp);
|
|
rm->char_offset[i].beg = found->char_pos;
|
|
|
|
key.byte_pos = END(i);
|
|
found = bsearch(&key, pairs, num_pos, sizeof(pair_t), pair_byte_cmp);
|
|
rm->char_offset[i].end = found->char_pos;
|
|
}
|
|
}
|
|
|
|
static void
|
|
match_check(VALUE match)
|
|
{
|
|
if (!RMATCH(match)->regexp) {
|
|
rb_raise(rb_eTypeError, "uninitialized MatchData");
|
|
}
|
|
}
|
|
|
|
/* :nodoc: */
|
|
static VALUE
|
|
match_init_copy(VALUE obj, VALUE orig)
|
|
{
|
|
struct rmatch *rm;
|
|
|
|
if (!OBJ_INIT_COPY(obj, orig)) return obj;
|
|
|
|
RMATCH(obj)->str = RMATCH(orig)->str;
|
|
RMATCH(obj)->regexp = RMATCH(orig)->regexp;
|
|
|
|
rm = RMATCH(obj)->rmatch;
|
|
if (rb_reg_region_copy(&rm->regs, RMATCH_REGS(orig)))
|
|
rb_memerror();
|
|
|
|
if (RMATCH(orig)->rmatch->char_offset_num_allocated) {
|
|
if (rm->char_offset_num_allocated < rm->regs.num_regs) {
|
|
REALLOC_N(rm->char_offset, struct rmatch_offset, rm->regs.num_regs);
|
|
rm->char_offset_num_allocated = rm->regs.num_regs;
|
|
}
|
|
MEMCPY(rm->char_offset, RMATCH(orig)->rmatch->char_offset,
|
|
struct rmatch_offset, rm->regs.num_regs);
|
|
RB_GC_GUARD(orig);
|
|
}
|
|
|
|
return obj;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* regexp -> regexp
|
|
*
|
|
* Returns the regexp that produced the match:
|
|
*
|
|
* m = /a.*b/.match("abc") # => #<MatchData "ab">
|
|
* m.regexp # => /a.*b/
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_regexp(VALUE match)
|
|
{
|
|
VALUE regexp;
|
|
match_check(match);
|
|
regexp = RMATCH(match)->regexp;
|
|
if (NIL_P(regexp)) {
|
|
VALUE str = rb_reg_nth_match(0, match);
|
|
regexp = rb_reg_regcomp(rb_reg_quote(str));
|
|
RMATCH(match)->regexp = regexp;
|
|
}
|
|
return regexp;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* names -> array_of_names
|
|
*
|
|
* Returns an array of the capture names
|
|
* (see {Named Captures}[rdoc-ref:Regexp@Named+Captures]):
|
|
*
|
|
* m = /(?<foo>.)(?<bar>.)(?<baz>.)/.match("hoge")
|
|
* # => #<MatchData "hog" foo:"h" bar:"o" baz:"g">
|
|
* m.names # => ["foo", "bar", "baz"]
|
|
*
|
|
* m = /foo/.match('foo') # => #<MatchData "foo">
|
|
* m.names # => [] # No named captures.
|
|
*
|
|
* Equivalent to:
|
|
*
|
|
* m = /(?<foo>.)(?<bar>.)(?<baz>.)/.match("hoge")
|
|
* m.regexp.names # => ["foo", "bar", "baz"]
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_names(VALUE match)
|
|
{
|
|
match_check(match);
|
|
if (NIL_P(RMATCH(match)->regexp))
|
|
return rb_ary_new_capa(0);
|
|
return rb_reg_names(RMATCH(match)->regexp);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* size -> integer
|
|
*
|
|
* Returns size of the match array:
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8">
|
|
* m.size # => 5
|
|
*
|
|
* MatchData#length is an alias for MatchData.size.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_size(VALUE match)
|
|
{
|
|
match_check(match);
|
|
return INT2FIX(RMATCH_REGS(match)->num_regs);
|
|
}
|
|
|
|
static int name_to_backref_number(struct re_registers *, VALUE, const char*, const char*);
|
|
NORETURN(static void name_to_backref_error(VALUE name));
|
|
|
|
static void
|
|
name_to_backref_error(VALUE name)
|
|
{
|
|
rb_raise(rb_eIndexError, "undefined group name reference: % "PRIsVALUE,
|
|
name);
|
|
}
|
|
|
|
static void
|
|
backref_number_check(struct re_registers *regs, int i)
|
|
{
|
|
if (i < 0 || regs->num_regs <= i)
|
|
rb_raise(rb_eIndexError, "index %d out of matches", i);
|
|
}
|
|
|
|
static int
|
|
match_backref_number(VALUE match, VALUE backref)
|
|
{
|
|
const char *name;
|
|
int num;
|
|
|
|
struct re_registers *regs = RMATCH_REGS(match);
|
|
VALUE regexp = RMATCH(match)->regexp;
|
|
|
|
match_check(match);
|
|
if (SYMBOL_P(backref)) {
|
|
backref = rb_sym2str(backref);
|
|
}
|
|
else if (!RB_TYPE_P(backref, T_STRING)) {
|
|
return NUM2INT(backref);
|
|
}
|
|
name = StringValueCStr(backref);
|
|
|
|
num = name_to_backref_number(regs, regexp, name, name + RSTRING_LEN(backref));
|
|
|
|
if (num < 1) {
|
|
name_to_backref_error(backref);
|
|
}
|
|
|
|
return num;
|
|
}
|
|
|
|
int
|
|
rb_reg_backref_number(VALUE match, VALUE backref)
|
|
{
|
|
return match_backref_number(match, backref);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* offset(n) -> [start_offset, end_offset]
|
|
* offset(name) -> [start_offset, end_offset]
|
|
*
|
|
* :include: doc/matchdata/offset.rdoc
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_offset(VALUE match, VALUE n)
|
|
{
|
|
int i = match_backref_number(match, n);
|
|
struct re_registers *regs = RMATCH_REGS(match);
|
|
|
|
match_check(match);
|
|
backref_number_check(regs, i);
|
|
|
|
if (BEG(i) < 0)
|
|
return rb_assoc_new(Qnil, Qnil);
|
|
|
|
update_char_offset(match);
|
|
return rb_assoc_new(LONG2NUM(RMATCH(match)->rmatch->char_offset[i].beg),
|
|
LONG2NUM(RMATCH(match)->rmatch->char_offset[i].end));
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch.byteoffset(n) -> array
|
|
*
|
|
* Returns a two-element array containing the beginning and ending byte-based offsets of
|
|
* the <em>n</em>th match.
|
|
* <em>n</em> can be a string or symbol to reference a named capture.
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* m.byteoffset(0) #=> [1, 7]
|
|
* m.byteoffset(4) #=> [6, 7]
|
|
*
|
|
* m = /(?<foo>.)(.)(?<bar>.)/.match("hoge")
|
|
* p m.byteoffset(:foo) #=> [0, 1]
|
|
* p m.byteoffset(:bar) #=> [2, 3]
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_byteoffset(VALUE match, VALUE n)
|
|
{
|
|
int i = match_backref_number(match, n);
|
|
struct re_registers *regs = RMATCH_REGS(match);
|
|
|
|
match_check(match);
|
|
backref_number_check(regs, i);
|
|
|
|
if (BEG(i) < 0)
|
|
return rb_assoc_new(Qnil, Qnil);
|
|
return rb_assoc_new(LONG2NUM(BEG(i)), LONG2NUM(END(i)));
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* begin(n) -> integer
|
|
* begin(name) -> integer
|
|
*
|
|
* :include: doc/matchdata/begin.rdoc
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_begin(VALUE match, VALUE n)
|
|
{
|
|
int i = match_backref_number(match, n);
|
|
struct re_registers *regs = RMATCH_REGS(match);
|
|
|
|
match_check(match);
|
|
backref_number_check(regs, i);
|
|
|
|
if (BEG(i) < 0)
|
|
return Qnil;
|
|
|
|
update_char_offset(match);
|
|
return LONG2NUM(RMATCH(match)->rmatch->char_offset[i].beg);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* end(n) -> integer
|
|
* end(name) -> integer
|
|
*
|
|
* :include: doc/matchdata/end.rdoc
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_end(VALUE match, VALUE n)
|
|
{
|
|
int i = match_backref_number(match, n);
|
|
struct re_registers *regs = RMATCH_REGS(match);
|
|
|
|
match_check(match);
|
|
backref_number_check(regs, i);
|
|
|
|
if (BEG(i) < 0)
|
|
return Qnil;
|
|
|
|
update_char_offset(match);
|
|
return LONG2NUM(RMATCH(match)->rmatch->char_offset[i].end);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* match(n) -> string or nil
|
|
* match(name) -> string or nil
|
|
*
|
|
* Returns the matched substring corresponding to the given argument.
|
|
*
|
|
* When non-negative argument +n+ is given,
|
|
* returns the matched substring for the <tt>n</tt>th match:
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)(\w)?/.match("THX1138.")
|
|
* # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8" 5:nil>
|
|
* m.match(0) # => "HX1138"
|
|
* m.match(4) # => "8"
|
|
* m.match(5) # => nil
|
|
*
|
|
* When string or symbol argument +name+ is given,
|
|
* returns the matched substring for the given name:
|
|
*
|
|
* m = /(?<foo>.)(.)(?<bar>.+)/.match("hoge")
|
|
* # => #<MatchData "hoge" foo:"h" bar:"ge">
|
|
* m.match('foo') # => "h"
|
|
* m.match(:bar) # => "ge"
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_nth(VALUE match, VALUE n)
|
|
{
|
|
int i = match_backref_number(match, n);
|
|
struct re_registers *regs = RMATCH_REGS(match);
|
|
|
|
backref_number_check(regs, i);
|
|
|
|
long start = BEG(i), end = END(i);
|
|
if (start < 0)
|
|
return Qnil;
|
|
|
|
return rb_str_subseq(RMATCH(match)->str, start, end - start);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* match_length(n) -> integer or nil
|
|
* match_length(name) -> integer or nil
|
|
*
|
|
* Returns the length (in characters) of the matched substring
|
|
* corresponding to the given argument.
|
|
*
|
|
* When non-negative argument +n+ is given,
|
|
* returns the length of the matched substring
|
|
* for the <tt>n</tt>th match:
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)(\w)?/.match("THX1138.")
|
|
* # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8" 5:nil>
|
|
* m.match_length(0) # => 6
|
|
* m.match_length(4) # => 1
|
|
* m.match_length(5) # => nil
|
|
*
|
|
* When string or symbol argument +name+ is given,
|
|
* returns the length of the matched substring
|
|
* for the named match:
|
|
*
|
|
* m = /(?<foo>.)(.)(?<bar>.+)/.match("hoge")
|
|
* # => #<MatchData "hoge" foo:"h" bar:"ge">
|
|
* m.match_length('foo') # => 1
|
|
* m.match_length(:bar) # => 2
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_nth_length(VALUE match, VALUE n)
|
|
{
|
|
int i = match_backref_number(match, n);
|
|
struct re_registers *regs = RMATCH_REGS(match);
|
|
|
|
match_check(match);
|
|
backref_number_check(regs, i);
|
|
|
|
if (BEG(i) < 0)
|
|
return Qnil;
|
|
|
|
update_char_offset(match);
|
|
const struct rmatch_offset *const ofs =
|
|
&RMATCH(match)->rmatch->char_offset[i];
|
|
return LONG2NUM(ofs->end - ofs->beg);
|
|
}
|
|
|
|
#define MATCH_BUSY FL_USER2
|
|
|
|
void
|
|
rb_match_busy(VALUE match)
|
|
{
|
|
FL_SET(match, MATCH_BUSY);
|
|
}
|
|
|
|
void
|
|
rb_match_unbusy(VALUE match)
|
|
{
|
|
FL_UNSET(match, MATCH_BUSY);
|
|
}
|
|
|
|
int
|
|
rb_match_count(VALUE match)
|
|
{
|
|
struct re_registers *regs;
|
|
if (NIL_P(match)) return -1;
|
|
regs = RMATCH_REGS(match);
|
|
if (!regs) return -1;
|
|
return regs->num_regs;
|
|
}
|
|
|
|
int
|
|
rb_match_nth_defined(int nth, VALUE match)
|
|
{
|
|
struct re_registers *regs;
|
|
if (NIL_P(match)) return FALSE;
|
|
regs = RMATCH_REGS(match);
|
|
if (!regs) return FALSE;
|
|
if (nth >= regs->num_regs) {
|
|
return FALSE;
|
|
}
|
|
if (nth < 0) {
|
|
nth += regs->num_regs;
|
|
if (nth <= 0) return FALSE;
|
|
}
|
|
return (BEG(nth) != -1);
|
|
}
|
|
|
|
static void
|
|
match_set_string(VALUE m, VALUE string, long pos, long len)
|
|
{
|
|
struct RMatch *match = (struct RMatch *)m;
|
|
struct rmatch *rmatch = match->rmatch;
|
|
|
|
match->str = string;
|
|
match->regexp = Qnil;
|
|
int err = onig_region_resize(&rmatch->regs, 1);
|
|
if (err) rb_memerror();
|
|
rmatch->regs.beg[0] = pos;
|
|
rmatch->regs.end[0] = pos + len;
|
|
}
|
|
|
|
void
|
|
rb_backref_set_string(VALUE string, long pos, long len)
|
|
{
|
|
VALUE match = rb_backref_get();
|
|
if (NIL_P(match) || FL_TEST(match, MATCH_BUSY)) {
|
|
match = match_alloc(rb_cMatch);
|
|
}
|
|
match_set_string(match, string, pos, len);
|
|
rb_backref_set(match);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* fixed_encoding? -> true or false
|
|
*
|
|
* Returns +false+ if +self+ is applicable to
|
|
* a string with any ASCII-compatible encoding;
|
|
* otherwise returns +true+:
|
|
*
|
|
* r = /a/ # => /a/
|
|
* r.fixed_encoding? # => false
|
|
* r.match?("\u{6666} a") # => true
|
|
* r.match?("\xa1\xa2 a".force_encoding("euc-jp")) # => true
|
|
* r.match?("abc".force_encoding("euc-jp")) # => true
|
|
*
|
|
* r = /a/u # => /a/
|
|
* r.fixed_encoding? # => true
|
|
* r.match?("\u{6666} a") # => true
|
|
* r.match?("\xa1\xa2".force_encoding("euc-jp")) # Raises exception.
|
|
* r.match?("abc".force_encoding("euc-jp")) # => true
|
|
*
|
|
* r = /\u{6666}/ # => /\u{6666}/
|
|
* r.fixed_encoding? # => true
|
|
* r.encoding # => #<Encoding:UTF-8>
|
|
* r.match?("\u{6666} a") # => true
|
|
* r.match?("\xa1\xa2".force_encoding("euc-jp")) # Raises exception.
|
|
* r.match?("abc".force_encoding("euc-jp")) # => false
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_fixed_encoding_p(VALUE re)
|
|
{
|
|
return RBOOL(FL_TEST(re, KCODE_FIXED));
|
|
}
|
|
|
|
static VALUE
|
|
rb_reg_preprocess(const char *p, const char *end, rb_encoding *enc,
|
|
rb_encoding **fixed_enc, onig_errmsg_buffer err, int options);
|
|
|
|
NORETURN(static void reg_enc_error(VALUE re, VALUE str));
|
|
|
|
static void
|
|
reg_enc_error(VALUE re, VALUE str)
|
|
{
|
|
rb_raise(rb_eEncCompatError,
|
|
"incompatible encoding regexp match (%s regexp with %s string)",
|
|
rb_enc_name(rb_enc_get(re)),
|
|
rb_enc_name(rb_enc_get(str)));
|
|
}
|
|
|
|
static inline int
|
|
str_coderange(VALUE str)
|
|
{
|
|
int cr = ENC_CODERANGE(str);
|
|
if (cr == ENC_CODERANGE_UNKNOWN) {
|
|
cr = rb_enc_str_coderange(str);
|
|
}
|
|
return cr;
|
|
}
|
|
|
|
static rb_encoding*
|
|
rb_reg_prepare_enc(VALUE re, VALUE str, int warn)
|
|
{
|
|
rb_encoding *enc = 0;
|
|
int cr = str_coderange(str);
|
|
|
|
if (cr == ENC_CODERANGE_BROKEN) {
|
|
rb_raise(rb_eArgError,
|
|
"invalid byte sequence in %s",
|
|
rb_enc_name(rb_enc_get(str)));
|
|
}
|
|
|
|
rb_reg_check(re);
|
|
enc = rb_enc_get(str);
|
|
if (RREGEXP_PTR(re)->enc == enc) {
|
|
}
|
|
else if (cr == ENC_CODERANGE_7BIT &&
|
|
RREGEXP_PTR(re)->enc == rb_usascii_encoding()) {
|
|
enc = RREGEXP_PTR(re)->enc;
|
|
}
|
|
else if (!rb_enc_asciicompat(enc)) {
|
|
reg_enc_error(re, str);
|
|
}
|
|
else if (rb_reg_fixed_encoding_p(re)) {
|
|
if ((!rb_enc_asciicompat(RREGEXP_PTR(re)->enc) ||
|
|
cr != ENC_CODERANGE_7BIT)) {
|
|
reg_enc_error(re, str);
|
|
}
|
|
enc = RREGEXP_PTR(re)->enc;
|
|
}
|
|
else if (warn && (RBASIC(re)->flags & REG_ENCODING_NONE) &&
|
|
enc != rb_ascii8bit_encoding() &&
|
|
cr != ENC_CODERANGE_7BIT) {
|
|
rb_warn("historical binary regexp match /.../n against %s string",
|
|
rb_enc_name(enc));
|
|
}
|
|
return enc;
|
|
}
|
|
|
|
regex_t *
|
|
rb_reg_prepare_re0(VALUE re, VALUE str, onig_errmsg_buffer err)
|
|
{
|
|
regex_t *reg = RREGEXP_PTR(re);
|
|
int r;
|
|
OnigErrorInfo einfo;
|
|
const char *pattern;
|
|
VALUE unescaped;
|
|
rb_encoding *fixed_enc = 0;
|
|
rb_encoding *enc = rb_reg_prepare_enc(re, str, 1);
|
|
|
|
if (reg->enc == enc) return reg;
|
|
|
|
rb_reg_check(re);
|
|
reg = RREGEXP_PTR(re);
|
|
pattern = RREGEXP_SRC_PTR(re);
|
|
|
|
unescaped = rb_reg_preprocess(
|
|
pattern, pattern + RREGEXP_SRC_LEN(re), enc,
|
|
&fixed_enc, err, 0);
|
|
|
|
if (NIL_P(unescaped)) {
|
|
rb_raise(rb_eArgError, "regexp preprocess failed: %s", err);
|
|
}
|
|
|
|
// inherit the timeout settings
|
|
rb_hrtime_t timelimit = reg->timelimit;
|
|
|
|
const char *ptr;
|
|
long len;
|
|
RSTRING_GETMEM(unescaped, ptr, len);
|
|
r = onig_new(®, (UChar *)ptr, (UChar *)(ptr + len),
|
|
reg->options, enc,
|
|
OnigDefaultSyntax, &einfo);
|
|
if (r) {
|
|
onig_error_code_to_str((UChar*)err, r, &einfo);
|
|
rb_reg_raise(pattern, RREGEXP_SRC_LEN(re), err, re);
|
|
}
|
|
|
|
reg->timelimit = timelimit;
|
|
|
|
RB_GC_GUARD(unescaped);
|
|
return reg;
|
|
}
|
|
|
|
regex_t *
|
|
rb_reg_prepare_re(VALUE re, VALUE str)
|
|
{
|
|
onig_errmsg_buffer err = "";
|
|
return rb_reg_prepare_re0(re, str, err);
|
|
}
|
|
|
|
long
|
|
rb_reg_adjust_startpos(VALUE re, VALUE str, long pos, int reverse)
|
|
{
|
|
long range;
|
|
rb_encoding *enc;
|
|
UChar *p, *string;
|
|
|
|
enc = rb_reg_prepare_enc(re, str, 0);
|
|
|
|
if (reverse) {
|
|
range = -pos;
|
|
}
|
|
else {
|
|
range = RSTRING_LEN(str) - pos;
|
|
}
|
|
|
|
if (pos > 0 && ONIGENC_MBC_MAXLEN(enc) != 1 && pos < RSTRING_LEN(str)) {
|
|
string = (UChar*)RSTRING_PTR(str);
|
|
|
|
if (range > 0) {
|
|
p = onigenc_get_right_adjust_char_head(enc, string, string + pos, string + RSTRING_LEN(str));
|
|
}
|
|
else {
|
|
p = ONIGENC_LEFT_ADJUST_CHAR_HEAD(enc, string, string + pos, string + RSTRING_LEN(str));
|
|
}
|
|
return p - string;
|
|
}
|
|
|
|
return pos;
|
|
}
|
|
|
|
/* returns byte offset */
|
|
static long
|
|
rb_reg_search_set_match(VALUE re, VALUE str, long pos, int reverse, int set_backref_str, VALUE *set_match)
|
|
{
|
|
long result;
|
|
VALUE match;
|
|
struct re_registers regi, *regs = ®i;
|
|
char *start, *range;
|
|
long len;
|
|
regex_t *reg;
|
|
int tmpreg;
|
|
onig_errmsg_buffer err = "";
|
|
|
|
RSTRING_GETMEM(str, start, len);
|
|
range = start;
|
|
if (pos > len || pos < 0) {
|
|
rb_backref_set(Qnil);
|
|
return -1;
|
|
}
|
|
|
|
reg = rb_reg_prepare_re0(re, str, err);
|
|
tmpreg = reg != RREGEXP_PTR(re);
|
|
if (!tmpreg) RREGEXP(re)->usecnt++;
|
|
|
|
MEMZERO(regs, struct re_registers, 1);
|
|
if (!reverse) {
|
|
range += len;
|
|
}
|
|
result = onig_search(reg,
|
|
(UChar*)start,
|
|
((UChar*)(start + len)),
|
|
((UChar*)(start + pos)),
|
|
((UChar*)range),
|
|
regs, ONIG_OPTION_NONE);
|
|
if (!tmpreg) RREGEXP(re)->usecnt--;
|
|
if (tmpreg) {
|
|
if (RREGEXP(re)->usecnt) {
|
|
onig_free(reg);
|
|
}
|
|
else {
|
|
onig_free(RREGEXP_PTR(re));
|
|
RREGEXP_PTR(re) = reg;
|
|
}
|
|
}
|
|
if (result < 0) {
|
|
if (regs == ®i)
|
|
onig_region_free(regs, 0);
|
|
if (result == ONIG_MISMATCH) {
|
|
rb_backref_set(Qnil);
|
|
return result;
|
|
}
|
|
else {
|
|
onig_error_code_to_str((UChar*)err, (int)result);
|
|
rb_reg_raise(RREGEXP_SRC_PTR(re), RREGEXP_SRC_LEN(re), err, re);
|
|
}
|
|
}
|
|
|
|
match = match_alloc(rb_cMatch);
|
|
int copy_err = rb_reg_region_copy(RMATCH_REGS(match), regs);
|
|
onig_region_free(regs, 0);
|
|
if (copy_err) rb_memerror();
|
|
|
|
if (set_backref_str) {
|
|
RMATCH(match)->str = rb_str_new4(str);
|
|
}
|
|
|
|
RMATCH(match)->regexp = re;
|
|
rb_backref_set(match);
|
|
if (set_match) *set_match = match;
|
|
|
|
return result;
|
|
}
|
|
|
|
long
|
|
rb_reg_search0(VALUE re, VALUE str, long pos, int reverse, int set_backref_str)
|
|
{
|
|
return rb_reg_search_set_match(re, str, pos, reverse, set_backref_str, NULL);
|
|
}
|
|
|
|
long
|
|
rb_reg_search(VALUE re, VALUE str, long pos, int reverse)
|
|
{
|
|
return rb_reg_search0(re, str, pos, reverse, 1);
|
|
}
|
|
|
|
bool
|
|
rb_reg_start_with_p(VALUE re, VALUE str)
|
|
{
|
|
long result;
|
|
VALUE match;
|
|
struct re_registers regi, *regs = ®i;
|
|
regex_t *reg;
|
|
int tmpreg;
|
|
onig_errmsg_buffer err = "";
|
|
|
|
reg = rb_reg_prepare_re0(re, str, err);
|
|
tmpreg = reg != RREGEXP_PTR(re);
|
|
if (!tmpreg) RREGEXP(re)->usecnt++;
|
|
|
|
match = rb_backref_get();
|
|
if (!NIL_P(match)) {
|
|
if (FL_TEST(match, MATCH_BUSY)) {
|
|
match = Qnil;
|
|
}
|
|
else {
|
|
regs = RMATCH_REGS(match);
|
|
}
|
|
}
|
|
if (NIL_P(match)) {
|
|
MEMZERO(regs, struct re_registers, 1);
|
|
}
|
|
const char *ptr;
|
|
long len;
|
|
RSTRING_GETMEM(str, ptr, len);
|
|
result = onig_match(reg,
|
|
(UChar*)(ptr),
|
|
((UChar*)(ptr + len)),
|
|
(UChar*)(ptr),
|
|
regs, ONIG_OPTION_NONE);
|
|
if (!tmpreg) RREGEXP(re)->usecnt--;
|
|
if (tmpreg) {
|
|
if (RREGEXP(re)->usecnt) {
|
|
onig_free(reg);
|
|
}
|
|
else {
|
|
onig_free(RREGEXP_PTR(re));
|
|
RREGEXP_PTR(re) = reg;
|
|
}
|
|
}
|
|
if (result < 0) {
|
|
if (regs == ®i)
|
|
onig_region_free(regs, 0);
|
|
if (result == ONIG_MISMATCH) {
|
|
rb_backref_set(Qnil);
|
|
return false;
|
|
}
|
|
else {
|
|
onig_error_code_to_str((UChar*)err, (int)result);
|
|
rb_reg_raise(RREGEXP_SRC_PTR(re), RREGEXP_SRC_LEN(re), err, re);
|
|
}
|
|
}
|
|
|
|
if (NIL_P(match)) {
|
|
int err;
|
|
match = match_alloc(rb_cMatch);
|
|
err = rb_reg_region_copy(RMATCH_REGS(match), regs);
|
|
onig_region_free(regs, 0);
|
|
if (err) rb_memerror();
|
|
}
|
|
|
|
RMATCH(match)->str = rb_str_new4(str);
|
|
|
|
RMATCH(match)->regexp = re;
|
|
rb_backref_set(match);
|
|
|
|
return true;
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_nth_defined(int nth, VALUE match)
|
|
{
|
|
struct re_registers *regs;
|
|
if (NIL_P(match)) return Qnil;
|
|
match_check(match);
|
|
regs = RMATCH_REGS(match);
|
|
if (nth >= regs->num_regs) {
|
|
return Qnil;
|
|
}
|
|
if (nth < 0) {
|
|
nth += regs->num_regs;
|
|
if (nth <= 0) return Qnil;
|
|
}
|
|
return RBOOL(BEG(nth) != -1);
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_nth_match(int nth, VALUE match)
|
|
{
|
|
VALUE str;
|
|
long start, end, len;
|
|
struct re_registers *regs;
|
|
|
|
if (NIL_P(match)) return Qnil;
|
|
match_check(match);
|
|
regs = RMATCH_REGS(match);
|
|
if (nth >= regs->num_regs) {
|
|
return Qnil;
|
|
}
|
|
if (nth < 0) {
|
|
nth += regs->num_regs;
|
|
if (nth <= 0) return Qnil;
|
|
}
|
|
start = BEG(nth);
|
|
if (start == -1) return Qnil;
|
|
end = END(nth);
|
|
len = end - start;
|
|
str = rb_str_subseq(RMATCH(match)->str, start, len);
|
|
return str;
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_last_match(VALUE match)
|
|
{
|
|
return rb_reg_nth_match(0, match);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* pre_match -> string
|
|
*
|
|
* Returns the substring of the target string from its beginning
|
|
* up to the first match in +self+ (that is, <tt>self[0]</tt>);
|
|
* equivalent to regexp global variable <tt>$`</tt>:
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8">
|
|
* m[0] # => "HX1138"
|
|
* m.pre_match # => "T"
|
|
*
|
|
* Related: MatchData#post_match.
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_reg_match_pre(VALUE match)
|
|
{
|
|
VALUE str;
|
|
struct re_registers *regs;
|
|
|
|
if (NIL_P(match)) return Qnil;
|
|
match_check(match);
|
|
regs = RMATCH_REGS(match);
|
|
if (BEG(0) == -1) return Qnil;
|
|
str = rb_str_subseq(RMATCH(match)->str, 0, BEG(0));
|
|
return str;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* post_match -> str
|
|
*
|
|
* Returns the substring of the target string from
|
|
* the end of the first match in +self+ (that is, <tt>self[0]</tt>)
|
|
* to the end of the string;
|
|
* equivalent to regexp global variable <tt>$'</tt>:
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138: The Movie")
|
|
* # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8">
|
|
* m[0] # => "HX1138"
|
|
* m.post_match # => ": The Movie"\
|
|
*
|
|
* Related: MatchData.pre_match.
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_reg_match_post(VALUE match)
|
|
{
|
|
VALUE str;
|
|
long pos;
|
|
struct re_registers *regs;
|
|
|
|
if (NIL_P(match)) return Qnil;
|
|
match_check(match);
|
|
regs = RMATCH_REGS(match);
|
|
if (BEG(0) == -1) return Qnil;
|
|
str = RMATCH(match)->str;
|
|
pos = END(0);
|
|
str = rb_str_subseq(str, pos, RSTRING_LEN(str) - pos);
|
|
return str;
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_match_last(VALUE match)
|
|
{
|
|
int i;
|
|
struct re_registers *regs;
|
|
|
|
if (NIL_P(match)) return Qnil;
|
|
match_check(match);
|
|
regs = RMATCH_REGS(match);
|
|
if (BEG(0) == -1) return Qnil;
|
|
|
|
for (i=regs->num_regs-1; BEG(i) == -1 && i > 0; i--)
|
|
;
|
|
if (i == 0) return Qnil;
|
|
return rb_reg_nth_match(i, match);
|
|
}
|
|
|
|
static VALUE
|
|
last_match_getter(ID _x, VALUE *_y)
|
|
{
|
|
return rb_reg_last_match(rb_backref_get());
|
|
}
|
|
|
|
static VALUE
|
|
prematch_getter(ID _x, VALUE *_y)
|
|
{
|
|
return rb_reg_match_pre(rb_backref_get());
|
|
}
|
|
|
|
static VALUE
|
|
postmatch_getter(ID _x, VALUE *_y)
|
|
{
|
|
return rb_reg_match_post(rb_backref_get());
|
|
}
|
|
|
|
static VALUE
|
|
last_paren_match_getter(ID _x, VALUE *_y)
|
|
{
|
|
return rb_reg_match_last(rb_backref_get());
|
|
}
|
|
|
|
static VALUE
|
|
match_array(VALUE match, int start)
|
|
{
|
|
struct re_registers *regs;
|
|
VALUE ary;
|
|
VALUE target;
|
|
int i;
|
|
|
|
match_check(match);
|
|
regs = RMATCH_REGS(match);
|
|
ary = rb_ary_new2(regs->num_regs);
|
|
target = RMATCH(match)->str;
|
|
|
|
for (i=start; i<regs->num_regs; i++) {
|
|
if (regs->beg[i] == -1) {
|
|
rb_ary_push(ary, Qnil);
|
|
}
|
|
else {
|
|
VALUE str = rb_str_subseq(target, regs->beg[i], regs->end[i]-regs->beg[i]);
|
|
rb_ary_push(ary, str);
|
|
}
|
|
}
|
|
return ary;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* to_a -> array
|
|
*
|
|
* Returns the array of matches:
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8">
|
|
* m.to_a # => ["HX1138", "H", "X", "113", "8"]
|
|
*
|
|
* Related: MatchData#captures.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_to_a(VALUE match)
|
|
{
|
|
return match_array(match, 0);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* captures -> array
|
|
*
|
|
* Returns the array of captures,
|
|
* which are all matches except <tt>m[0]</tt>:
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8">
|
|
* m[0] # => "HX1138"
|
|
* m.captures # => ["H", "X", "113", "8"]
|
|
*
|
|
* Related: MatchData.to_a.
|
|
*
|
|
*/
|
|
static VALUE
|
|
match_captures(VALUE match)
|
|
{
|
|
return match_array(match, 1);
|
|
}
|
|
|
|
static int
|
|
name_to_backref_number(struct re_registers *regs, VALUE regexp, const char* name, const char* name_end)
|
|
{
|
|
if (NIL_P(regexp)) return -1;
|
|
return onig_name_to_backref_number(RREGEXP_PTR(regexp),
|
|
(const unsigned char *)name, (const unsigned char *)name_end, regs);
|
|
}
|
|
|
|
#define NAME_TO_NUMBER(regs, re, name, name_ptr, name_end) \
|
|
(NIL_P(re) ? 0 : \
|
|
!rb_enc_compatible(RREGEXP_SRC(re), (name)) ? 0 : \
|
|
name_to_backref_number((regs), (re), (name_ptr), (name_end)))
|
|
|
|
static int
|
|
namev_to_backref_number(struct re_registers *regs, VALUE re, VALUE name)
|
|
{
|
|
int num;
|
|
|
|
if (SYMBOL_P(name)) {
|
|
name = rb_sym2str(name);
|
|
}
|
|
else if (!RB_TYPE_P(name, T_STRING)) {
|
|
return -1;
|
|
}
|
|
num = NAME_TO_NUMBER(regs, re, name,
|
|
RSTRING_PTR(name), RSTRING_END(name));
|
|
if (num < 1) {
|
|
name_to_backref_error(name);
|
|
}
|
|
return num;
|
|
}
|
|
|
|
static VALUE
|
|
match_ary_subseq(VALUE match, long beg, long len, VALUE result)
|
|
{
|
|
long olen = RMATCH_REGS(match)->num_regs;
|
|
long j, end = olen < beg+len ? olen : beg+len;
|
|
if (NIL_P(result)) result = rb_ary_new_capa(len);
|
|
if (len == 0) return result;
|
|
|
|
for (j = beg; j < end; j++) {
|
|
rb_ary_push(result, rb_reg_nth_match((int)j, match));
|
|
}
|
|
if (beg + len > j) {
|
|
rb_ary_resize(result, RARRAY_LEN(result) + (beg + len) - j);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static VALUE
|
|
match_ary_aref(VALUE match, VALUE idx, VALUE result)
|
|
{
|
|
long beg, len;
|
|
int num_regs = RMATCH_REGS(match)->num_regs;
|
|
|
|
/* check if idx is Range */
|
|
switch (rb_range_beg_len(idx, &beg, &len, (long)num_regs, !NIL_P(result))) {
|
|
case Qfalse:
|
|
if (NIL_P(result)) return rb_reg_nth_match(NUM2INT(idx), match);
|
|
rb_ary_push(result, rb_reg_nth_match(NUM2INT(idx), match));
|
|
return result;
|
|
case Qnil:
|
|
return Qnil;
|
|
default:
|
|
return match_ary_subseq(match, beg, len, result);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* matchdata[index] -> string or nil
|
|
* matchdata[start, length] -> array
|
|
* matchdata[range] -> array
|
|
* matchdata[name] -> string or nil
|
|
*
|
|
* When arguments +index+, +start and +length+, or +range+ are given,
|
|
* returns match and captures in the style of Array#[]:
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8">
|
|
* m[0] # => "HX1138"
|
|
* m[1, 2] # => ["H", "X"]
|
|
* m[1..3] # => ["H", "X", "113"]
|
|
* m[-3, 2] # => ["X", "113"]
|
|
*
|
|
* When string or symbol argument +name+ is given,
|
|
* returns the matched substring for the given name:
|
|
*
|
|
* m = /(?<foo>.)(.)(?<bar>.+)/.match("hoge")
|
|
* # => #<MatchData "hoge" foo:"h" bar:"ge">
|
|
* m['foo'] # => "h"
|
|
* m[:bar] # => "ge"
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_aref(int argc, VALUE *argv, VALUE match)
|
|
{
|
|
VALUE idx, length;
|
|
|
|
match_check(match);
|
|
rb_scan_args(argc, argv, "11", &idx, &length);
|
|
|
|
if (NIL_P(length)) {
|
|
if (FIXNUM_P(idx)) {
|
|
return rb_reg_nth_match(FIX2INT(idx), match);
|
|
}
|
|
else {
|
|
int num = namev_to_backref_number(RMATCH_REGS(match), RMATCH(match)->regexp, idx);
|
|
if (num >= 0) {
|
|
return rb_reg_nth_match(num, match);
|
|
}
|
|
else {
|
|
return match_ary_aref(match, idx, Qnil);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
long beg = NUM2LONG(idx);
|
|
long len = NUM2LONG(length);
|
|
long num_regs = RMATCH_REGS(match)->num_regs;
|
|
if (len < 0) {
|
|
return Qnil;
|
|
}
|
|
if (beg < 0) {
|
|
beg += num_regs;
|
|
if (beg < 0) return Qnil;
|
|
}
|
|
else if (beg > num_regs) {
|
|
return Qnil;
|
|
}
|
|
if (beg+len > num_regs) {
|
|
len = num_regs - beg;
|
|
}
|
|
return match_ary_subseq(match, beg, len, Qnil);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* values_at(*indexes) -> array
|
|
*
|
|
* Returns match and captures at the given +indexes+,
|
|
* which may include any mixture of:
|
|
*
|
|
* - Integers.
|
|
* - Ranges.
|
|
* - Names (strings and symbols).
|
|
*
|
|
*
|
|
* Examples:
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138: The Movie")
|
|
* # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8">
|
|
* m.values_at(0, 2, -2) # => ["HX1138", "X", "113"]
|
|
* m.values_at(1..2, -1) # => ["H", "X", "8"]
|
|
*
|
|
* m = /(?<a>\d+) *(?<op>[+\-*\/]) *(?<b>\d+)/.match("1 + 2")
|
|
* # => #<MatchData "1 + 2" a:"1" op:"+" b:"2">
|
|
* m.values_at(0, 1..2, :a, :b, :op)
|
|
* # => ["1 + 2", "1", "+", "1", "2", "+"]
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_values_at(int argc, VALUE *argv, VALUE match)
|
|
{
|
|
VALUE result;
|
|
int i;
|
|
|
|
match_check(match);
|
|
result = rb_ary_new2(argc);
|
|
|
|
for (i=0; i<argc; i++) {
|
|
if (FIXNUM_P(argv[i])) {
|
|
rb_ary_push(result, rb_reg_nth_match(FIX2INT(argv[i]), match));
|
|
}
|
|
else {
|
|
int num = namev_to_backref_number(RMATCH_REGS(match), RMATCH(match)->regexp, argv[i]);
|
|
if (num >= 0) {
|
|
rb_ary_push(result, rb_reg_nth_match(num, match));
|
|
}
|
|
else {
|
|
match_ary_aref(match, argv[i], result);
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* to_s -> string
|
|
*
|
|
* Returns the matched string:
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8">
|
|
* m.to_s # => "HX1138"
|
|
*
|
|
* m = /(?<foo>.)(.)(?<bar>.+)/.match("hoge")
|
|
* # => #<MatchData "hoge" foo:"h" bar:"ge">
|
|
* m.to_s # => "hoge"
|
|
*
|
|
* Related: MatchData.inspect.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_to_s(VALUE match)
|
|
{
|
|
VALUE str = rb_reg_last_match(match);
|
|
|
|
match_check(match);
|
|
if (NIL_P(str)) str = rb_str_new(0,0);
|
|
return str;
|
|
}
|
|
|
|
static int
|
|
match_named_captures_iter(const OnigUChar *name, const OnigUChar *name_end,
|
|
int back_num, int *back_refs, OnigRegex regex, void *arg) {
|
|
struct MEMO *memo = MEMO_CAST(arg);
|
|
VALUE hash = memo->v1;
|
|
VALUE match = memo->v2;
|
|
|
|
VALUE key = rb_enc_str_new((const char *)name, name_end-name, regex->enc);
|
|
VALUE value;
|
|
|
|
int i;
|
|
int found = 0;
|
|
|
|
for (i = 0; i < back_num; i++) {
|
|
value = rb_reg_nth_match(back_refs[i], match);
|
|
if (RTEST(value)) {
|
|
rb_hash_aset(hash, key, value);
|
|
found = 1;
|
|
}
|
|
}
|
|
|
|
if (found == 0) {
|
|
rb_hash_aset(hash, key, Qnil);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* named_captures -> hash
|
|
*
|
|
* Returns a hash of the named captures;
|
|
* each key is a capture name; each value is its captured string or +nil+:
|
|
*
|
|
* m = /(?<foo>.)(.)(?<bar>.+)/.match("hoge")
|
|
* # => #<MatchData "hoge" foo:"h" bar:"ge">
|
|
* m.named_captures # => {"foo"=>"h", "bar"=>"ge"}
|
|
*
|
|
* m = /(?<a>.)(?<b>.)/.match("01")
|
|
* # => #<MatchData "01" a:"0" b:"1">
|
|
* m.named_captures #=> {"a" => "0", "b" => "1"}
|
|
*
|
|
* m = /(?<a>.)(?<b>.)?/.match("0")
|
|
* # => #<MatchData "0" a:"0" b:nil>
|
|
* m.named_captures #=> {"a" => "0", "b" => nil}
|
|
*
|
|
* m = /(?<a>.)(?<a>.)/.match("01")
|
|
* # => #<MatchData "01" a:"0" a:"1">
|
|
* m.named_captures #=> {"a" => "1"}
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_named_captures(VALUE match)
|
|
{
|
|
VALUE hash;
|
|
struct MEMO *memo;
|
|
|
|
match_check(match);
|
|
if (NIL_P(RMATCH(match)->regexp))
|
|
return rb_hash_new();
|
|
|
|
hash = rb_hash_new();
|
|
memo = MEMO_NEW(hash, match, 0);
|
|
|
|
onig_foreach_name(RREGEXP(RMATCH(match)->regexp)->ptr, match_named_captures_iter, (void*)memo);
|
|
|
|
return hash;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* string -> string
|
|
*
|
|
* Returns the target string if it was frozen;
|
|
* otherwise, returns a frozen copy of the target string:
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* # => #<MatchData "HX1138" 1:"H" 2:"X" 3:"113" 4:"8">
|
|
* m.string # => "THX1138."
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_string(VALUE match)
|
|
{
|
|
match_check(match);
|
|
return RMATCH(match)->str; /* str is frozen */
|
|
}
|
|
|
|
struct backref_name_tag {
|
|
const UChar *name;
|
|
long len;
|
|
};
|
|
|
|
static int
|
|
match_inspect_name_iter(const OnigUChar *name, const OnigUChar *name_end,
|
|
int back_num, int *back_refs, OnigRegex regex, void *arg0)
|
|
{
|
|
struct backref_name_tag *arg = (struct backref_name_tag *)arg0;
|
|
int i;
|
|
|
|
for (i = 0; i < back_num; i++) {
|
|
arg[back_refs[i]].name = name;
|
|
arg[back_refs[i]].len = name_end - name;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* inspect -> string
|
|
*
|
|
* Returns a string representation of +self+:
|
|
*
|
|
* m = /.$/.match("foo")
|
|
* # => #<MatchData "o">
|
|
* m.inspect # => "#<MatchData \"o\">"
|
|
*
|
|
* m = /(.)(.)(.)/.match("foo")
|
|
* # => #<MatchData "foo" 1:"f" 2:"o" 3:"o">
|
|
* m.inspect # => "#<MatchData \"foo\" 1:\"f\" 2:\"o\
|
|
*
|
|
* m = /(.)(.)?(.)/.match("fo")
|
|
* # => #<MatchData "fo" 1:"f" 2:nil 3:"o">
|
|
* m.inspect # => "#<MatchData \"fo\" 1:\"f\" 2:nil 3:\"o\">"
|
|
*
|
|
* Related: MatchData#to_s.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_inspect(VALUE match)
|
|
{
|
|
VALUE cname = rb_class_path(rb_obj_class(match));
|
|
VALUE str;
|
|
int i;
|
|
struct re_registers *regs = RMATCH_REGS(match);
|
|
int num_regs = regs->num_regs;
|
|
struct backref_name_tag *names;
|
|
VALUE regexp = RMATCH(match)->regexp;
|
|
|
|
if (regexp == 0) {
|
|
return rb_sprintf("#<%"PRIsVALUE":%p>", cname, (void*)match);
|
|
}
|
|
else if (NIL_P(regexp)) {
|
|
return rb_sprintf("#<%"PRIsVALUE": %"PRIsVALUE">",
|
|
cname, rb_reg_nth_match(0, match));
|
|
}
|
|
|
|
names = ALLOCA_N(struct backref_name_tag, num_regs);
|
|
MEMZERO(names, struct backref_name_tag, num_regs);
|
|
|
|
onig_foreach_name(RREGEXP_PTR(regexp),
|
|
match_inspect_name_iter, names);
|
|
|
|
str = rb_str_buf_new2("#<");
|
|
rb_str_append(str, cname);
|
|
|
|
for (i = 0; i < num_regs; i++) {
|
|
VALUE v;
|
|
rb_str_buf_cat2(str, " ");
|
|
if (0 < i) {
|
|
if (names[i].name)
|
|
rb_str_buf_cat(str, (const char *)names[i].name, names[i].len);
|
|
else {
|
|
rb_str_catf(str, "%d", i);
|
|
}
|
|
rb_str_buf_cat2(str, ":");
|
|
}
|
|
v = rb_reg_nth_match(i, match);
|
|
if (NIL_P(v))
|
|
rb_str_buf_cat2(str, "nil");
|
|
else
|
|
rb_str_buf_append(str, rb_str_inspect(v));
|
|
}
|
|
rb_str_buf_cat2(str, ">");
|
|
|
|
return str;
|
|
}
|
|
|
|
VALUE rb_cRegexp;
|
|
|
|
static int
|
|
read_escaped_byte(const char **pp, const char *end, onig_errmsg_buffer err)
|
|
{
|
|
const char *p = *pp;
|
|
int code;
|
|
int meta_prefix = 0, ctrl_prefix = 0;
|
|
size_t len;
|
|
|
|
if (p == end || *p++ != '\\') {
|
|
errcpy(err, "too short escaped multibyte character");
|
|
return -1;
|
|
}
|
|
|
|
again:
|
|
if (p == end) {
|
|
errcpy(err, "too short escape sequence");
|
|
return -1;
|
|
}
|
|
switch (*p++) {
|
|
case '\\': code = '\\'; break;
|
|
case 'n': code = '\n'; break;
|
|
case 't': code = '\t'; break;
|
|
case 'r': code = '\r'; break;
|
|
case 'f': code = '\f'; break;
|
|
case 'v': code = '\013'; break;
|
|
case 'a': code = '\007'; break;
|
|
case 'e': code = '\033'; break;
|
|
|
|
/* \OOO */
|
|
case '0': case '1': case '2': case '3':
|
|
case '4': case '5': case '6': case '7':
|
|
p--;
|
|
code = scan_oct(p, end < p+3 ? end-p : 3, &len);
|
|
p += len;
|
|
break;
|
|
|
|
case 'x': /* \xHH */
|
|
code = scan_hex(p, end < p+2 ? end-p : 2, &len);
|
|
if (len < 1) {
|
|
errcpy(err, "invalid hex escape");
|
|
return -1;
|
|
}
|
|
p += len;
|
|
break;
|
|
|
|
case 'M': /* \M-X, \M-\C-X, \M-\cX */
|
|
if (meta_prefix) {
|
|
errcpy(err, "duplicate meta escape");
|
|
return -1;
|
|
}
|
|
meta_prefix = 1;
|
|
if (p+1 < end && *p++ == '-' && (*p & 0x80) == 0) {
|
|
if (*p == '\\') {
|
|
p++;
|
|
goto again;
|
|
}
|
|
else {
|
|
code = *p++;
|
|
break;
|
|
}
|
|
}
|
|
errcpy(err, "too short meta escape");
|
|
return -1;
|
|
|
|
case 'C': /* \C-X, \C-\M-X */
|
|
if (p == end || *p++ != '-') {
|
|
errcpy(err, "too short control escape");
|
|
return -1;
|
|
}
|
|
case 'c': /* \cX, \c\M-X */
|
|
if (ctrl_prefix) {
|
|
errcpy(err, "duplicate control escape");
|
|
return -1;
|
|
}
|
|
ctrl_prefix = 1;
|
|
if (p < end && (*p & 0x80) == 0) {
|
|
if (*p == '\\') {
|
|
p++;
|
|
goto again;
|
|
}
|
|
else {
|
|
code = *p++;
|
|
break;
|
|
}
|
|
}
|
|
errcpy(err, "too short control escape");
|
|
return -1;
|
|
|
|
default:
|
|
errcpy(err, "unexpected escape sequence");
|
|
return -1;
|
|
}
|
|
if (code < 0 || 0xff < code) {
|
|
errcpy(err, "invalid escape code");
|
|
return -1;
|
|
}
|
|
|
|
if (ctrl_prefix)
|
|
code &= 0x1f;
|
|
if (meta_prefix)
|
|
code |= 0x80;
|
|
|
|
*pp = p;
|
|
return code;
|
|
}
|
|
|
|
static int
|
|
unescape_escaped_nonascii(const char **pp, const char *end, rb_encoding *enc,
|
|
VALUE buf, rb_encoding **encp, onig_errmsg_buffer err)
|
|
{
|
|
const char *p = *pp;
|
|
int chmaxlen = rb_enc_mbmaxlen(enc);
|
|
unsigned char *area = ALLOCA_N(unsigned char, chmaxlen);
|
|
char *chbuf = (char *)area;
|
|
int chlen = 0;
|
|
int byte;
|
|
int l;
|
|
|
|
memset(chbuf, 0, chmaxlen);
|
|
|
|
byte = read_escaped_byte(&p, end, err);
|
|
if (byte == -1) {
|
|
return -1;
|
|
}
|
|
|
|
area[chlen++] = byte;
|
|
while (chlen < chmaxlen &&
|
|
MBCLEN_NEEDMORE_P(rb_enc_precise_mbclen(chbuf, chbuf+chlen, enc))) {
|
|
byte = read_escaped_byte(&p, end, err);
|
|
if (byte == -1) {
|
|
return -1;
|
|
}
|
|
area[chlen++] = byte;
|
|
}
|
|
|
|
l = rb_enc_precise_mbclen(chbuf, chbuf+chlen, enc);
|
|
if (MBCLEN_INVALID_P(l)) {
|
|
errcpy(err, "invalid multibyte escape");
|
|
return -1;
|
|
}
|
|
if (1 < chlen || (area[0] & 0x80)) {
|
|
rb_str_buf_cat(buf, chbuf, chlen);
|
|
|
|
if (*encp == 0)
|
|
*encp = enc;
|
|
else if (*encp != enc) {
|
|
errcpy(err, "escaped non ASCII character in UTF-8 regexp");
|
|
return -1;
|
|
}
|
|
}
|
|
else {
|
|
char escbuf[5];
|
|
snprintf(escbuf, sizeof(escbuf), "\\x%02X", area[0]&0xff);
|
|
rb_str_buf_cat(buf, escbuf, 4);
|
|
}
|
|
*pp = p;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
check_unicode_range(unsigned long code, onig_errmsg_buffer err)
|
|
{
|
|
if ((0xd800 <= code && code <= 0xdfff) || /* Surrogates */
|
|
0x10ffff < code) {
|
|
errcpy(err, "invalid Unicode range");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
append_utf8(unsigned long uv,
|
|
VALUE buf, rb_encoding **encp, onig_errmsg_buffer err)
|
|
{
|
|
if (check_unicode_range(uv, err) != 0)
|
|
return -1;
|
|
if (uv < 0x80) {
|
|
char escbuf[5];
|
|
snprintf(escbuf, sizeof(escbuf), "\\x%02X", (int)uv);
|
|
rb_str_buf_cat(buf, escbuf, 4);
|
|
}
|
|
else {
|
|
int len;
|
|
char utf8buf[6];
|
|
len = rb_uv_to_utf8(utf8buf, uv);
|
|
rb_str_buf_cat(buf, utf8buf, len);
|
|
|
|
if (*encp == 0)
|
|
*encp = rb_utf8_encoding();
|
|
else if (*encp != rb_utf8_encoding()) {
|
|
errcpy(err, "UTF-8 character in non UTF-8 regexp");
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
unescape_unicode_list(const char **pp, const char *end,
|
|
VALUE buf, rb_encoding **encp, onig_errmsg_buffer err)
|
|
{
|
|
const char *p = *pp;
|
|
int has_unicode = 0;
|
|
unsigned long code;
|
|
size_t len;
|
|
|
|
while (p < end && ISSPACE(*p)) p++;
|
|
|
|
while (1) {
|
|
code = ruby_scan_hex(p, end-p, &len);
|
|
if (len == 0)
|
|
break;
|
|
if (6 < len) { /* max 10FFFF */
|
|
errcpy(err, "invalid Unicode range");
|
|
return -1;
|
|
}
|
|
p += len;
|
|
if (append_utf8(code, buf, encp, err) != 0)
|
|
return -1;
|
|
has_unicode = 1;
|
|
|
|
while (p < end && ISSPACE(*p)) p++;
|
|
}
|
|
|
|
if (has_unicode == 0) {
|
|
errcpy(err, "invalid Unicode list");
|
|
return -1;
|
|
}
|
|
|
|
*pp = p;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
unescape_unicode_bmp(const char **pp, const char *end,
|
|
VALUE buf, rb_encoding **encp, onig_errmsg_buffer err)
|
|
{
|
|
const char *p = *pp;
|
|
size_t len;
|
|
unsigned long code;
|
|
|
|
if (end < p+4) {
|
|
errcpy(err, "invalid Unicode escape");
|
|
return -1;
|
|
}
|
|
code = ruby_scan_hex(p, 4, &len);
|
|
if (len != 4) {
|
|
errcpy(err, "invalid Unicode escape");
|
|
return -1;
|
|
}
|
|
if (append_utf8(code, buf, encp, err) != 0)
|
|
return -1;
|
|
*pp = p + 4;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
unescape_nonascii(const char *p, const char *end, rb_encoding *enc,
|
|
VALUE buf, rb_encoding **encp, int *has_property,
|
|
onig_errmsg_buffer err, int options)
|
|
{
|
|
unsigned char c;
|
|
char smallbuf[2];
|
|
int in_char_class = 0;
|
|
|
|
while (p < end) {
|
|
int chlen = rb_enc_precise_mbclen(p, end, enc);
|
|
if (!MBCLEN_CHARFOUND_P(chlen)) {
|
|
invalid_multibyte:
|
|
errcpy(err, "invalid multibyte character");
|
|
return -1;
|
|
}
|
|
chlen = MBCLEN_CHARFOUND_LEN(chlen);
|
|
if (1 < chlen || (*p & 0x80)) {
|
|
multibyte:
|
|
rb_str_buf_cat(buf, p, chlen);
|
|
p += chlen;
|
|
if (*encp == 0)
|
|
*encp = enc;
|
|
else if (*encp != enc) {
|
|
errcpy(err, "non ASCII character in UTF-8 regexp");
|
|
return -1;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
switch (c = *p++) {
|
|
case '\\':
|
|
if (p == end) {
|
|
errcpy(err, "too short escape sequence");
|
|
return -1;
|
|
}
|
|
chlen = rb_enc_precise_mbclen(p, end, enc);
|
|
if (!MBCLEN_CHARFOUND_P(chlen)) {
|
|
goto invalid_multibyte;
|
|
}
|
|
if ((chlen = MBCLEN_CHARFOUND_LEN(chlen)) > 1) {
|
|
/* include the previous backslash */
|
|
--p;
|
|
++chlen;
|
|
goto multibyte;
|
|
}
|
|
switch (c = *p++) {
|
|
case '1': case '2': case '3':
|
|
case '4': case '5': case '6': case '7': /* \O, \OO, \OOO or backref */
|
|
{
|
|
size_t len = end-(p-1), octlen;
|
|
if (ruby_scan_oct(p-1, len < 3 ? len : 3, &octlen) <= 0177) {
|
|
/* backref or 7bit octal.
|
|
no need to unescape anyway.
|
|
re-escaping may break backref */
|
|
goto escape_asis;
|
|
}
|
|
}
|
|
/* xxx: How about more than 199 subexpressions? */
|
|
|
|
case '0': /* \0, \0O, \0OO */
|
|
|
|
case 'x': /* \xHH */
|
|
case 'c': /* \cX, \c\M-X */
|
|
case 'C': /* \C-X, \C-\M-X */
|
|
case 'M': /* \M-X, \M-\C-X, \M-\cX */
|
|
p = p-2;
|
|
if (enc == rb_usascii_encoding()) {
|
|
const char *pbeg = p;
|
|
int byte = read_escaped_byte(&p, end, err);
|
|
if (byte == -1) return -1;
|
|
c = byte;
|
|
rb_str_buf_cat(buf, pbeg, p-pbeg);
|
|
}
|
|
else {
|
|
if (unescape_escaped_nonascii(&p, end, enc, buf, encp, err) != 0)
|
|
return -1;
|
|
}
|
|
break;
|
|
|
|
case 'u':
|
|
if (p == end) {
|
|
errcpy(err, "too short escape sequence");
|
|
return -1;
|
|
}
|
|
if (*p == '{') {
|
|
/* \u{H HH HHH HHHH HHHHH HHHHHH ...} */
|
|
p++;
|
|
if (unescape_unicode_list(&p, end, buf, encp, err) != 0)
|
|
return -1;
|
|
if (p == end || *p++ != '}') {
|
|
errcpy(err, "invalid Unicode list");
|
|
return -1;
|
|
}
|
|
break;
|
|
}
|
|
else {
|
|
/* \uHHHH */
|
|
if (unescape_unicode_bmp(&p, end, buf, encp, err) != 0)
|
|
return -1;
|
|
break;
|
|
}
|
|
|
|
case 'p': /* \p{Hiragana} */
|
|
case 'P':
|
|
if (!*encp) {
|
|
*has_property = 1;
|
|
}
|
|
goto escape_asis;
|
|
|
|
default: /* \n, \\, \d, \9, etc. */
|
|
escape_asis:
|
|
smallbuf[0] = '\\';
|
|
smallbuf[1] = c;
|
|
rb_str_buf_cat(buf, smallbuf, 2);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case '#':
|
|
if ((options & ONIG_OPTION_EXTEND) && !in_char_class) {
|
|
/* consume and ignore comment in extended regexp */
|
|
while ((p < end) && ((c = *p++) != '\n'));
|
|
break;
|
|
}
|
|
rb_str_buf_cat(buf, (char *)&c, 1);
|
|
break;
|
|
case '[':
|
|
in_char_class++;
|
|
rb_str_buf_cat(buf, (char *)&c, 1);
|
|
break;
|
|
case ']':
|
|
if (in_char_class) {
|
|
in_char_class--;
|
|
}
|
|
rb_str_buf_cat(buf, (char *)&c, 1);
|
|
break;
|
|
case '(':
|
|
if (!in_char_class && p + 1 < end && *p == '?' && *(p+1) == '#') {
|
|
/* (?# is comment inside any regexp, and content inside should be ignored */
|
|
const char *orig_p = p;
|
|
int cont = 1;
|
|
|
|
while (cont && (p < end)) {
|
|
switch (c = *p++) {
|
|
default:
|
|
if (!(c & 0x80)) break;
|
|
--p;
|
|
/* fallthrough */
|
|
case '\\':
|
|
chlen = rb_enc_precise_mbclen(p, end, enc);
|
|
if (!MBCLEN_CHARFOUND_P(chlen)) {
|
|
goto invalid_multibyte;
|
|
}
|
|
p += MBCLEN_CHARFOUND_LEN(chlen);
|
|
break;
|
|
case ')':
|
|
cont = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (cont) {
|
|
/* unterminated (?#, rewind so it is syntax error */
|
|
p = orig_p;
|
|
c = '(';
|
|
rb_str_buf_cat(buf, (char *)&c, 1);
|
|
}
|
|
}
|
|
else {
|
|
rb_str_buf_cat(buf, (char *)&c, 1);
|
|
}
|
|
break;
|
|
default:
|
|
rb_str_buf_cat(buf, (char *)&c, 1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static VALUE
|
|
rb_reg_preprocess(const char *p, const char *end, rb_encoding *enc,
|
|
rb_encoding **fixed_enc, onig_errmsg_buffer err, int options)
|
|
{
|
|
VALUE buf;
|
|
int has_property = 0;
|
|
|
|
buf = rb_str_buf_new(0);
|
|
|
|
if (rb_enc_asciicompat(enc))
|
|
*fixed_enc = 0;
|
|
else {
|
|
*fixed_enc = enc;
|
|
rb_enc_associate(buf, enc);
|
|
}
|
|
|
|
if (unescape_nonascii(p, end, enc, buf, fixed_enc, &has_property, err, options) != 0)
|
|
return Qnil;
|
|
|
|
if (has_property && !*fixed_enc) {
|
|
*fixed_enc = enc;
|
|
}
|
|
|
|
if (*fixed_enc) {
|
|
rb_enc_associate(buf, *fixed_enc);
|
|
}
|
|
|
|
return buf;
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_check_preprocess(VALUE str)
|
|
{
|
|
rb_encoding *fixed_enc = 0;
|
|
onig_errmsg_buffer err = "";
|
|
VALUE buf;
|
|
char *p, *end;
|
|
rb_encoding *enc;
|
|
|
|
StringValue(str);
|
|
p = RSTRING_PTR(str);
|
|
end = p + RSTRING_LEN(str);
|
|
enc = rb_enc_get(str);
|
|
|
|
buf = rb_reg_preprocess(p, end, enc, &fixed_enc, err, 0);
|
|
RB_GC_GUARD(str);
|
|
|
|
if (NIL_P(buf)) {
|
|
return rb_reg_error_desc(str, 0, err);
|
|
}
|
|
return Qnil;
|
|
}
|
|
|
|
static VALUE
|
|
rb_reg_preprocess_dregexp(VALUE ary, int options)
|
|
{
|
|
rb_encoding *fixed_enc = 0;
|
|
rb_encoding *regexp_enc = 0;
|
|
onig_errmsg_buffer err = "";
|
|
int i;
|
|
VALUE result = 0;
|
|
rb_encoding *ascii8bit = rb_ascii8bit_encoding();
|
|
|
|
if (RARRAY_LEN(ary) == 0) {
|
|
rb_raise(rb_eArgError, "no arguments given");
|
|
}
|
|
|
|
for (i = 0; i < RARRAY_LEN(ary); i++) {
|
|
VALUE str = RARRAY_AREF(ary, i);
|
|
VALUE buf;
|
|
char *p, *end;
|
|
rb_encoding *src_enc;
|
|
|
|
src_enc = rb_enc_get(str);
|
|
if (options & ARG_ENCODING_NONE &&
|
|
src_enc != ascii8bit) {
|
|
if (str_coderange(str) != ENC_CODERANGE_7BIT)
|
|
rb_raise(rb_eRegexpError, "/.../n has a non escaped non ASCII character in non ASCII-8BIT script");
|
|
else
|
|
src_enc = ascii8bit;
|
|
}
|
|
|
|
StringValue(str);
|
|
p = RSTRING_PTR(str);
|
|
end = p + RSTRING_LEN(str);
|
|
|
|
buf = rb_reg_preprocess(p, end, src_enc, &fixed_enc, err, options);
|
|
|
|
if (NIL_P(buf))
|
|
rb_raise(rb_eArgError, "%s", err);
|
|
|
|
if (fixed_enc != 0) {
|
|
if (regexp_enc != 0 && regexp_enc != fixed_enc) {
|
|
rb_raise(rb_eRegexpError, "encoding mismatch in dynamic regexp : %s and %s",
|
|
rb_enc_name(regexp_enc), rb_enc_name(fixed_enc));
|
|
}
|
|
regexp_enc = fixed_enc;
|
|
}
|
|
|
|
if (!result)
|
|
result = rb_str_new3(str);
|
|
else
|
|
rb_str_buf_append(result, str);
|
|
}
|
|
if (regexp_enc) {
|
|
rb_enc_associate(result, regexp_enc);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
rb_reg_initialize(VALUE obj, const char *s, long len, rb_encoding *enc,
|
|
int options, onig_errmsg_buffer err,
|
|
const char *sourcefile, int sourceline)
|
|
{
|
|
struct RRegexp *re = RREGEXP(obj);
|
|
VALUE unescaped;
|
|
rb_encoding *fixed_enc = 0;
|
|
rb_encoding *a_enc = rb_ascii8bit_encoding();
|
|
|
|
rb_check_frozen(obj);
|
|
if (FL_TEST(obj, REG_LITERAL))
|
|
rb_raise(rb_eSecurityError, "can't modify literal regexp");
|
|
if (re->ptr)
|
|
rb_raise(rb_eTypeError, "already initialized regexp");
|
|
re->ptr = 0;
|
|
|
|
if (rb_enc_dummy_p(enc)) {
|
|
errcpy(err, "can't make regexp with dummy encoding");
|
|
return -1;
|
|
}
|
|
|
|
unescaped = rb_reg_preprocess(s, s+len, enc, &fixed_enc, err, options);
|
|
if (NIL_P(unescaped))
|
|
return -1;
|
|
|
|
if (fixed_enc) {
|
|
if ((fixed_enc != enc && (options & ARG_ENCODING_FIXED)) ||
|
|
(fixed_enc != a_enc && (options & ARG_ENCODING_NONE))) {
|
|
errcpy(err, "incompatible character encoding");
|
|
return -1;
|
|
}
|
|
if (fixed_enc != a_enc) {
|
|
options |= ARG_ENCODING_FIXED;
|
|
enc = fixed_enc;
|
|
}
|
|
}
|
|
else if (!(options & ARG_ENCODING_FIXED)) {
|
|
enc = rb_usascii_encoding();
|
|
}
|
|
|
|
rb_enc_associate((VALUE)re, enc);
|
|
if ((options & ARG_ENCODING_FIXED) || fixed_enc) {
|
|
re->basic.flags |= KCODE_FIXED;
|
|
}
|
|
if (options & ARG_ENCODING_NONE) {
|
|
re->basic.flags |= REG_ENCODING_NONE;
|
|
}
|
|
|
|
re->ptr = make_regexp(RSTRING_PTR(unescaped), RSTRING_LEN(unescaped), enc,
|
|
options & ARG_REG_OPTION_MASK, err,
|
|
sourcefile, sourceline);
|
|
if (!re->ptr) return -1;
|
|
RB_GC_GUARD(unescaped);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
reg_set_source(VALUE reg, VALUE str, rb_encoding *enc)
|
|
{
|
|
rb_encoding *regenc = rb_enc_get(reg);
|
|
if (regenc != enc) {
|
|
str = rb_enc_associate(rb_str_dup(str), enc = regenc);
|
|
}
|
|
RB_OBJ_WRITE(reg, &RREGEXP(reg)->src, rb_fstring(str));
|
|
}
|
|
|
|
static int
|
|
rb_reg_initialize_str(VALUE obj, VALUE str, int options, onig_errmsg_buffer err,
|
|
const char *sourcefile, int sourceline)
|
|
{
|
|
int ret;
|
|
rb_encoding *str_enc = rb_enc_get(str), *enc = str_enc;
|
|
if (options & ARG_ENCODING_NONE) {
|
|
rb_encoding *ascii8bit = rb_ascii8bit_encoding();
|
|
if (enc != ascii8bit) {
|
|
if (str_coderange(str) != ENC_CODERANGE_7BIT) {
|
|
errcpy(err, "/.../n has a non escaped non ASCII character in non ASCII-8BIT script");
|
|
return -1;
|
|
}
|
|
enc = ascii8bit;
|
|
}
|
|
}
|
|
ret = rb_reg_initialize(obj, RSTRING_PTR(str), RSTRING_LEN(str), enc,
|
|
options, err, sourcefile, sourceline);
|
|
if (ret == 0) reg_set_source(obj, str, str_enc);
|
|
return ret;
|
|
}
|
|
|
|
static VALUE
|
|
rb_reg_s_alloc(VALUE klass)
|
|
{
|
|
NEWOBJ_OF(re, struct RRegexp, klass, T_REGEXP | (RGENGC_WB_PROTECTED_REGEXP ? FL_WB_PROTECTED : 0));
|
|
|
|
re->ptr = 0;
|
|
RB_OBJ_WRITE(re, &re->src, 0);
|
|
re->usecnt = 0;
|
|
|
|
return (VALUE)re;
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_alloc(void)
|
|
{
|
|
return rb_reg_s_alloc(rb_cRegexp);
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_new_str(VALUE s, int options)
|
|
{
|
|
return rb_reg_init_str(rb_reg_alloc(), s, options);
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_init_str(VALUE re, VALUE s, int options)
|
|
{
|
|
onig_errmsg_buffer err = "";
|
|
|
|
if (rb_reg_initialize_str(re, s, options, err, NULL, 0) != 0) {
|
|
rb_reg_raise_str(s, options, err);
|
|
}
|
|
|
|
return re;
|
|
}
|
|
|
|
static VALUE
|
|
rb_reg_init_str_enc(VALUE re, VALUE s, rb_encoding *enc, int options)
|
|
{
|
|
onig_errmsg_buffer err = "";
|
|
|
|
if (rb_reg_initialize(re, RSTRING_PTR(s), RSTRING_LEN(s),
|
|
enc, options, err, NULL, 0) != 0) {
|
|
rb_reg_raise_str(s, options, err);
|
|
}
|
|
reg_set_source(re, s, enc);
|
|
|
|
return re;
|
|
}
|
|
|
|
MJIT_FUNC_EXPORTED VALUE
|
|
rb_reg_new_ary(VALUE ary, int opt)
|
|
{
|
|
VALUE re = rb_reg_new_str(rb_reg_preprocess_dregexp(ary, opt), opt);
|
|
rb_obj_freeze(re);
|
|
return re;
|
|
}
|
|
|
|
VALUE
|
|
rb_enc_reg_new(const char *s, long len, rb_encoding *enc, int options)
|
|
{
|
|
VALUE re = rb_reg_alloc();
|
|
onig_errmsg_buffer err = "";
|
|
|
|
if (rb_reg_initialize(re, s, len, enc, options, err, NULL, 0) != 0) {
|
|
rb_enc_reg_raise(s, len, enc, options, err);
|
|
}
|
|
RB_OBJ_WRITE(re, &RREGEXP(re)->src, rb_fstring(rb_enc_str_new(s, len, enc)));
|
|
|
|
return re;
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_new(const char *s, long len, int options)
|
|
{
|
|
return rb_enc_reg_new(s, len, rb_ascii8bit_encoding(), options);
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_compile(VALUE str, int options, const char *sourcefile, int sourceline)
|
|
{
|
|
VALUE re = rb_reg_alloc();
|
|
onig_errmsg_buffer err = "";
|
|
|
|
if (!str) str = rb_str_new(0,0);
|
|
if (rb_reg_initialize_str(re, str, options, err, sourcefile, sourceline) != 0) {
|
|
rb_set_errinfo(rb_reg_error_desc(str, options, err));
|
|
return Qnil;
|
|
}
|
|
FL_SET(re, REG_LITERAL);
|
|
rb_obj_freeze(re);
|
|
return re;
|
|
}
|
|
|
|
static VALUE reg_cache;
|
|
|
|
VALUE
|
|
rb_reg_regcomp(VALUE str)
|
|
{
|
|
if (reg_cache && RREGEXP_SRC_LEN(reg_cache) == RSTRING_LEN(str)
|
|
&& ENCODING_GET(reg_cache) == ENCODING_GET(str)
|
|
&& memcmp(RREGEXP_SRC_PTR(reg_cache), RSTRING_PTR(str), RSTRING_LEN(str)) == 0)
|
|
return reg_cache;
|
|
|
|
return reg_cache = rb_reg_new_str(str, 0);
|
|
}
|
|
|
|
static st_index_t reg_hash(VALUE re);
|
|
/*
|
|
* call-seq:
|
|
* hash -> integer
|
|
*
|
|
* Returns the integer hash value for +self+.
|
|
*
|
|
* Related: Object#hash.
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_reg_hash(VALUE re)
|
|
{
|
|
st_index_t hashval = reg_hash(re);
|
|
return ST2FIX(hashval);
|
|
}
|
|
|
|
static st_index_t
|
|
reg_hash(VALUE re)
|
|
{
|
|
st_index_t hashval;
|
|
|
|
rb_reg_check(re);
|
|
hashval = RREGEXP_PTR(re)->options;
|
|
hashval = rb_hash_uint(hashval, rb_memhash(RREGEXP_SRC_PTR(re), RREGEXP_SRC_LEN(re)));
|
|
return rb_hash_end(hashval);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* regexp == object -> true or false
|
|
*
|
|
* Returns +true+ if +object+ is another \Regexp whose pattern,
|
|
* flags, and encoding are the same as +self+, +false+ otherwise:
|
|
*
|
|
* /foo/ == Regexp.new('foo') # => true
|
|
* /foo/ == /foo/i # => false
|
|
* /foo/ == Regexp.new('food') # => false
|
|
* /foo/ == Regexp.new("abc".force_encoding("euc-jp")) # => false
|
|
*
|
|
* Regexp#eql? is an alias for Regexp#==.
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_reg_equal(VALUE re1, VALUE re2)
|
|
{
|
|
if (re1 == re2) return Qtrue;
|
|
if (!RB_TYPE_P(re2, T_REGEXP)) return Qfalse;
|
|
rb_reg_check(re1); rb_reg_check(re2);
|
|
if (FL_TEST(re1, KCODE_FIXED) != FL_TEST(re2, KCODE_FIXED)) return Qfalse;
|
|
if (RREGEXP_PTR(re1)->options != RREGEXP_PTR(re2)->options) return Qfalse;
|
|
if (RREGEXP_SRC_LEN(re1) != RREGEXP_SRC_LEN(re2)) return Qfalse;
|
|
if (ENCODING_GET(re1) != ENCODING_GET(re2)) return Qfalse;
|
|
return RBOOL(memcmp(RREGEXP_SRC_PTR(re1), RREGEXP_SRC_PTR(re2), RREGEXP_SRC_LEN(re1)) == 0);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* hash -> integer
|
|
*
|
|
* Returns the integer hash value for +self+,
|
|
* based on the target string, regexp, match, and captures.
|
|
*
|
|
* See also Object#hash.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_hash(VALUE match)
|
|
{
|
|
const struct re_registers *regs;
|
|
st_index_t hashval;
|
|
|
|
match_check(match);
|
|
hashval = rb_hash_start(rb_str_hash(RMATCH(match)->str));
|
|
hashval = rb_hash_uint(hashval, reg_hash(match_regexp(match)));
|
|
regs = RMATCH_REGS(match);
|
|
hashval = rb_hash_uint(hashval, regs->num_regs);
|
|
hashval = rb_hash_uint(hashval, rb_memhash(regs->beg, regs->num_regs * sizeof(*regs->beg)));
|
|
hashval = rb_hash_uint(hashval, rb_memhash(regs->end, regs->num_regs * sizeof(*regs->end)));
|
|
hashval = rb_hash_end(hashval);
|
|
return ST2FIX(hashval);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* matchdata == object -> true or false
|
|
*
|
|
* Returns +true+ if +object+ is another \MatchData object
|
|
* whose target string, regexp, match, and captures
|
|
* are the same as +self+, +false+ otherwise.
|
|
*
|
|
* MatchData#eql? is an alias for MatchData#==.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_equal(VALUE match1, VALUE match2)
|
|
{
|
|
const struct re_registers *regs1, *regs2;
|
|
|
|
if (match1 == match2) return Qtrue;
|
|
if (!RB_TYPE_P(match2, T_MATCH)) return Qfalse;
|
|
if (!RMATCH(match1)->regexp || !RMATCH(match2)->regexp) return Qfalse;
|
|
if (!rb_str_equal(RMATCH(match1)->str, RMATCH(match2)->str)) return Qfalse;
|
|
if (!rb_reg_equal(match_regexp(match1), match_regexp(match2))) return Qfalse;
|
|
regs1 = RMATCH_REGS(match1);
|
|
regs2 = RMATCH_REGS(match2);
|
|
if (regs1->num_regs != regs2->num_regs) return Qfalse;
|
|
if (memcmp(regs1->beg, regs2->beg, regs1->num_regs * sizeof(*regs1->beg))) return Qfalse;
|
|
if (memcmp(regs1->end, regs2->end, regs1->num_regs * sizeof(*regs1->end))) return Qfalse;
|
|
return Qtrue;
|
|
}
|
|
|
|
static VALUE
|
|
reg_operand(VALUE s, int check)
|
|
{
|
|
if (SYMBOL_P(s)) {
|
|
return rb_sym2str(s);
|
|
}
|
|
else if (RB_TYPE_P(s, T_STRING)) {
|
|
return s;
|
|
}
|
|
else {
|
|
return check ? rb_str_to_str(s) : rb_check_string_type(s);
|
|
}
|
|
}
|
|
|
|
static long
|
|
reg_match_pos(VALUE re, VALUE *strp, long pos, VALUE* set_match)
|
|
{
|
|
VALUE str = *strp;
|
|
|
|
if (NIL_P(str)) {
|
|
rb_backref_set(Qnil);
|
|
return -1;
|
|
}
|
|
*strp = str = reg_operand(str, TRUE);
|
|
if (pos != 0) {
|
|
if (pos < 0) {
|
|
VALUE l = rb_str_length(str);
|
|
pos += NUM2INT(l);
|
|
if (pos < 0) {
|
|
return pos;
|
|
}
|
|
}
|
|
pos = rb_str_offset(str, pos);
|
|
}
|
|
return rb_reg_search_set_match(re, str, pos, 0, 1, set_match);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* regexp =~ string -> integer or nil
|
|
*
|
|
* Returns the integer index (in characters) of the first match
|
|
* for +self+ and +string+, or +nil+ if none;
|
|
* also sets the
|
|
* {rdoc-ref:Regexp Global Variables}[rdoc-ref:Regexp@Regexp+Global+Variables]:
|
|
*
|
|
* /at/ =~ 'input data' # => 7
|
|
* $~ # => #<MatchData "at">
|
|
* /ax/ =~ 'input data' # => nil
|
|
* $~ # => nil
|
|
*
|
|
* Assigns named captures to local variables of the same names
|
|
* if and only if +self+:
|
|
*
|
|
* - Is a regexp literal;
|
|
* see {Regexp Literals}[rdoc-ref:literals.rdoc@Regexp+Literals].
|
|
* - Does not contain interpolations;
|
|
* see {Regexp Interpolation}[rdoc-ref:Regexp@Regexp+Interpolation].
|
|
* - Is at the left of the expression.
|
|
*
|
|
* Example:
|
|
*
|
|
* /(?<lhs>\w+)\s*=\s*(?<rhs>\w+)/ =~ ' x = y '
|
|
* p lhs # => "x"
|
|
* p rhs # => "y"
|
|
*
|
|
* Assigns +nil+ if not matched:
|
|
*
|
|
* /(?<lhs>\w+)\s*=\s*(?<rhs>\w+)/ =~ ' x = '
|
|
* p lhs # => nil
|
|
* p rhs # => nil
|
|
*
|
|
* Does not make local variable assignments if +self+ is not a regexp literal:
|
|
*
|
|
* r = /(?<foo>\w+)\s*=\s*(?<foo>\w+)/
|
|
* r =~ ' x = y '
|
|
* p foo # Undefined local variable
|
|
* p bar # Undefined local variable
|
|
*
|
|
* The assignment does not occur if the regexp is not at the left:
|
|
*
|
|
* ' x = y ' =~ /(?<foo>\w+)\s*=\s*(?<foo>\w+)/
|
|
* p foo, foo # Undefined local variables
|
|
*
|
|
* A regexp interpolation, <tt>#{}</tt>, also disables
|
|
* the assignment:
|
|
*
|
|
* r = /(?<foo>\w+)/
|
|
* /(?<foo>\w+)\s*=\s*#{r}/ =~ 'x = y'
|
|
* p foo # Undefined local variable
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_reg_match(VALUE re, VALUE str)
|
|
{
|
|
long pos = reg_match_pos(re, &str, 0, NULL);
|
|
if (pos < 0) return Qnil;
|
|
pos = rb_str_sublen(str, pos);
|
|
return LONG2FIX(pos);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* regexp === string -> true or false
|
|
*
|
|
* Returns +true+ if +self+ finds a match in +string+:
|
|
*
|
|
* /^[a-z]*$/ === 'HELLO' # => false
|
|
* /^[A-Z]*$/ === 'HELLO' # => true
|
|
*
|
|
* This method is called in case statements:
|
|
*
|
|
* s = 'HELLO'
|
|
* case s
|
|
* when /\A[a-z]*\z/; print "Lower case\n"
|
|
* when /\A[A-Z]*\z/; print "Upper case\n"
|
|
* else print "Mixed case\n"
|
|
* end # => "Upper case"
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_eqq(VALUE re, VALUE str)
|
|
{
|
|
long start;
|
|
|
|
str = reg_operand(str, FALSE);
|
|
if (NIL_P(str)) {
|
|
rb_backref_set(Qnil);
|
|
return Qfalse;
|
|
}
|
|
start = rb_reg_search(re, str, 0, 0);
|
|
return RBOOL(start >= 0);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* ~ rxp -> integer or nil
|
|
*
|
|
* Equivalent to <tt><i>rxp</i> =~ $_</tt>:
|
|
*
|
|
* $_ = "input data"
|
|
* ~ /at/ # => 7
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_reg_match2(VALUE re)
|
|
{
|
|
long start;
|
|
VALUE line = rb_lastline_get();
|
|
|
|
if (!RB_TYPE_P(line, T_STRING)) {
|
|
rb_backref_set(Qnil);
|
|
return Qnil;
|
|
}
|
|
|
|
start = rb_reg_search(re, line, 0, 0);
|
|
if (start < 0) {
|
|
return Qnil;
|
|
}
|
|
start = rb_str_sublen(line, start);
|
|
return LONG2FIX(start);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* match(string, offset = 0) -> matchdata or nil
|
|
* match(string, offset = 0) {|matchdata| ... } -> object
|
|
*
|
|
* With no block given, returns the MatchData object
|
|
* that describes the match, if any, or +nil+ if none;
|
|
* the search begins at the given byte +offset+ in +self+:
|
|
*
|
|
* /abra/.match('abracadabra') # => #<MatchData "abra">
|
|
* /abra/.match('abracadabra', 4) # => #<MatchData "abra">
|
|
* /abra/.match('abracadabra', 8) # => nil
|
|
* /abra/.match('abracadabra', 800) # => nil
|
|
*
|
|
* With a block given, calls the block if and only if a match is found;
|
|
* returns the block's value:
|
|
*
|
|
* /abra/.match('abracadabra') {|matchdata| p matchdata }
|
|
* # => #<MatchData "abra">
|
|
* /abra/.match('abracadabra', 4) {|matchdata| p matchdata }
|
|
* # => #<MatchData "abra">
|
|
* /abra/.match('abracadabra', 8) {|matchdata| p matchdata }
|
|
* # => nil
|
|
* /abra/.match('abracadabra', 8) {|marchdata| fail 'Cannot happen' }
|
|
* # => nil
|
|
*
|
|
* Output (from the first two blocks above):
|
|
*
|
|
* #<MatchData "abra">
|
|
* #<MatchData "abra">
|
|
*
|
|
* /(.)(.)(.)/.match("abc")[2] # => "b"
|
|
* /(.)(.)/.match("abc", 1)[2] # => "c"
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_match_m(int argc, VALUE *argv, VALUE re)
|
|
{
|
|
VALUE result = Qnil, str, initpos;
|
|
long pos;
|
|
|
|
if (rb_scan_args(argc, argv, "11", &str, &initpos) == 2) {
|
|
pos = NUM2LONG(initpos);
|
|
}
|
|
else {
|
|
pos = 0;
|
|
}
|
|
|
|
pos = reg_match_pos(re, &str, pos, &result);
|
|
if (pos < 0) {
|
|
rb_backref_set(Qnil);
|
|
return Qnil;
|
|
}
|
|
rb_match_busy(result);
|
|
if (!NIL_P(result) && rb_block_given_p()) {
|
|
return rb_yield(result);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* match?(string) -> true or false
|
|
* match?(string, offset = 0) -> true or false
|
|
*
|
|
* Returns <code>true</code> or <code>false</code> to indicate whether the
|
|
* regexp is matched or not without updating $~ and other related variables.
|
|
* If the second parameter is present, it specifies the position in the string
|
|
* to begin the search.
|
|
*
|
|
* /R.../.match?("Ruby") # => true
|
|
* /R.../.match?("Ruby", 1) # => false
|
|
* /P.../.match?("Ruby") # => false
|
|
* $& # => nil
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_match_m_p(int argc, VALUE *argv, VALUE re)
|
|
{
|
|
long pos = rb_check_arity(argc, 1, 2) > 1 ? NUM2LONG(argv[1]) : 0;
|
|
return rb_reg_match_p(re, argv[0], pos);
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_match_p(VALUE re, VALUE str, long pos)
|
|
{
|
|
regex_t *reg;
|
|
onig_errmsg_buffer err = "";
|
|
OnigPosition result;
|
|
const UChar *start, *end;
|
|
int tmpreg;
|
|
|
|
if (NIL_P(str)) return Qfalse;
|
|
str = SYMBOL_P(str) ? rb_sym2str(str) : StringValue(str);
|
|
if (pos) {
|
|
if (pos < 0) {
|
|
pos += NUM2LONG(rb_str_length(str));
|
|
if (pos < 0) return Qfalse;
|
|
}
|
|
if (pos > 0) {
|
|
long len = 1;
|
|
const char *beg = rb_str_subpos(str, pos, &len);
|
|
if (!beg) return Qfalse;
|
|
pos = beg - RSTRING_PTR(str);
|
|
}
|
|
}
|
|
reg = rb_reg_prepare_re0(re, str, err);
|
|
tmpreg = reg != RREGEXP_PTR(re);
|
|
if (!tmpreg) RREGEXP(re)->usecnt++;
|
|
start = ((UChar*)RSTRING_PTR(str));
|
|
end = start + RSTRING_LEN(str);
|
|
result = onig_search(reg, start, end, start + pos, end,
|
|
NULL, ONIG_OPTION_NONE);
|
|
if (!tmpreg) RREGEXP(re)->usecnt--;
|
|
if (tmpreg) {
|
|
if (RREGEXP(re)->usecnt) {
|
|
onig_free(reg);
|
|
}
|
|
else {
|
|
onig_free(RREGEXP_PTR(re));
|
|
RREGEXP_PTR(re) = reg;
|
|
}
|
|
}
|
|
if (result < 0) {
|
|
if (result == ONIG_MISMATCH) {
|
|
return Qfalse;
|
|
}
|
|
else {
|
|
onig_error_code_to_str((UChar*)err, (int)result);
|
|
rb_reg_raise(RREGEXP_SRC_PTR(re), RREGEXP_SRC_LEN(re), err, re);
|
|
}
|
|
}
|
|
return Qtrue;
|
|
}
|
|
|
|
/*
|
|
* Document-method: compile
|
|
*
|
|
* Alias for Regexp.new
|
|
*/
|
|
|
|
static int
|
|
str_to_option(VALUE str)
|
|
{
|
|
int flag = 0;
|
|
const char *ptr;
|
|
long len;
|
|
str = rb_check_string_type(str);
|
|
if (NIL_P(str)) return -1;
|
|
RSTRING_GETMEM(str, ptr, len);
|
|
for (long i = 0; i < len; ++i) {
|
|
int f = char_to_option(ptr[i]);
|
|
if (!f) {
|
|
rb_raise(rb_eArgError, "unknown regexp option: %"PRIsVALUE, str);
|
|
}
|
|
flag |= f;
|
|
}
|
|
return flag;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Regexp.new(string, options = 0, n_flag = nil, timeout: nil) -> regexp
|
|
* Regexp.new(regexp, timeout: nil) -> regexp
|
|
*
|
|
* With argument +string+ given, returns a new regexp with the given string
|
|
* and options:
|
|
*
|
|
* r = Regexp.new('foo') # => /foo/
|
|
* r.source # => "foo"
|
|
* r.options # => 0
|
|
*
|
|
* Optional argument +options+ is one of the following:
|
|
*
|
|
* - A String of options:
|
|
*
|
|
* Regexp.new('foo', 'i') # => /foo/i
|
|
* Regexp.new('foo', 'im') # => /foo/im
|
|
*
|
|
* - The logical OR of one or more of the constants
|
|
* Regexp::EXTENDED, Regexp::IGNORECASE, and Regexp::MULTILINE:
|
|
*
|
|
* Regexp.new('foo', Regexp::IGNORECASE) # => /foo/i
|
|
* Regexp.new('foo', Regexp::EXTENDED) # => /foo/x
|
|
* Regexp.new('foo', Regexp::MULTILINE) # => /foo/m
|
|
* flags = Regexp::IGNORECASE | Regexp::EXTENDED | Regexp::MULTILINE
|
|
* Regexp.new('foo', flags) # => /foo/mix
|
|
*
|
|
* - +nil+ or +false+, which is ignored.
|
|
*
|
|
* If optional argument +n_flag+ if it is a string starts with
|
|
* <code>'n'</code> or <code>'N'</code>, the encoding of +string+ is
|
|
* ignored and the new regexp encoding is fixed to +ASCII-8BIT+ or
|
|
* +US-ASCII+, by its content.
|
|
*
|
|
* Regexp.new('foo', nil, 'n') # => /foo/n
|
|
* Regexp.new("\u3042", nil, 'n') # => /\xE3\x81\x82/n
|
|
*
|
|
* If optional keyword argument +timeout+ is given,
|
|
* its float value overrides the timeout interval for the class,
|
|
* Regexp.timeout.
|
|
*
|
|
* With argument +regexp+ given, returns a new regexp. The source,
|
|
* options, timeout are the same as +regexp+. +options+ and +n_flag+
|
|
* arguments are ineffective. The timeout can be overridden by
|
|
* +timeout+ keyword.
|
|
*
|
|
* options = Regexp::MULTILINE
|
|
* r = Regexp.new('foo', optinos, timeout: 1.1) # => /foo/m
|
|
* r2 = Regexp.new(r) # => /foo/m
|
|
* r2.timeout # => 1.1
|
|
* r3 = Regexp.new(r, timeout: 3.14) # => /foo/m
|
|
* r3.timeout # => 3.14
|
|
*
|
|
* Regexp.compile is an alias for Regexp.new.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_initialize_m(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
int flags = 0;
|
|
VALUE str;
|
|
rb_encoding *enc = 0;
|
|
|
|
VALUE src, opts = Qundef, n_flag = Qundef, kwargs, timeout = Qnil;
|
|
|
|
rb_scan_args(argc, argv, "12:", &src, &opts, &n_flag, &kwargs);
|
|
|
|
if (!NIL_P(kwargs)) {
|
|
static ID keywords[1];
|
|
if (!keywords[0]) {
|
|
keywords[0] = rb_intern_const("timeout");
|
|
}
|
|
rb_get_kwargs(kwargs, keywords, 0, 1, &timeout);
|
|
}
|
|
|
|
if (RB_TYPE_P(src, T_REGEXP)) {
|
|
VALUE re = src;
|
|
|
|
if (opts != Qnil) {
|
|
rb_warn("flags ignored");
|
|
}
|
|
rb_reg_check(re);
|
|
flags = rb_reg_options(re);
|
|
str = RREGEXP_SRC(re);
|
|
}
|
|
else {
|
|
if (opts != Qundef) {
|
|
int f;
|
|
if (FIXNUM_P(opts)) flags = FIX2INT(opts);
|
|
else if ((f = str_to_option(opts)) >= 0) flags = f;
|
|
else if (!NIL_P(opts) && rb_bool_expected(opts, "ignorecase", FALSE))
|
|
flags = ONIG_OPTION_IGNORECASE;
|
|
}
|
|
if (n_flag != Qundef && !NIL_P(n_flag)) {
|
|
char *kcode = StringValuePtr(n_flag);
|
|
if (kcode[0] == 'n' || kcode[0] == 'N') {
|
|
enc = rb_ascii8bit_encoding();
|
|
flags |= ARG_ENCODING_NONE;
|
|
}
|
|
else {
|
|
rb_category_warn(RB_WARN_CATEGORY_DEPRECATED, "encoding option is ignored - %s", kcode);
|
|
}
|
|
}
|
|
str = StringValue(src);
|
|
}
|
|
if (enc && rb_enc_get(str) != enc)
|
|
rb_reg_init_str_enc(self, str, enc, flags);
|
|
else
|
|
rb_reg_init_str(self, str, flags);
|
|
|
|
regex_t *reg = RREGEXP_PTR(self);
|
|
|
|
{
|
|
double limit = NIL_P(timeout) ? 0.0 : NUM2DBL(timeout);
|
|
if (limit < 0) limit = 0;
|
|
double2hrtime(®->timelimit, limit);
|
|
}
|
|
|
|
return self;
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_quote(VALUE str)
|
|
{
|
|
rb_encoding *enc = rb_enc_get(str);
|
|
char *s, *send, *t;
|
|
VALUE tmp;
|
|
int c, clen;
|
|
int ascii_only = rb_enc_str_asciionly_p(str);
|
|
|
|
s = RSTRING_PTR(str);
|
|
send = s + RSTRING_LEN(str);
|
|
while (s < send) {
|
|
c = rb_enc_ascget(s, send, &clen, enc);
|
|
if (c == -1) {
|
|
s += mbclen(s, send, enc);
|
|
continue;
|
|
}
|
|
switch (c) {
|
|
case '[': case ']': case '{': case '}':
|
|
case '(': case ')': case '|': case '-':
|
|
case '*': case '.': case '\\':
|
|
case '?': case '+': case '^': case '$':
|
|
case ' ': case '#':
|
|
case '\t': case '\f': case '\v': case '\n': case '\r':
|
|
goto meta_found;
|
|
}
|
|
s += clen;
|
|
}
|
|
tmp = rb_str_new3(str);
|
|
if (ascii_only) {
|
|
rb_enc_associate(tmp, rb_usascii_encoding());
|
|
}
|
|
return tmp;
|
|
|
|
meta_found:
|
|
tmp = rb_str_new(0, RSTRING_LEN(str)*2);
|
|
if (ascii_only) {
|
|
rb_enc_associate(tmp, rb_usascii_encoding());
|
|
}
|
|
else {
|
|
rb_enc_copy(tmp, str);
|
|
}
|
|
t = RSTRING_PTR(tmp);
|
|
/* copy upto metacharacter */
|
|
const char *p = RSTRING_PTR(str);
|
|
memcpy(t, p, s - p);
|
|
t += s - p;
|
|
|
|
while (s < send) {
|
|
c = rb_enc_ascget(s, send, &clen, enc);
|
|
if (c == -1) {
|
|
int n = mbclen(s, send, enc);
|
|
|
|
while (n--)
|
|
*t++ = *s++;
|
|
continue;
|
|
}
|
|
s += clen;
|
|
switch (c) {
|
|
case '[': case ']': case '{': case '}':
|
|
case '(': case ')': case '|': case '-':
|
|
case '*': case '.': case '\\':
|
|
case '?': case '+': case '^': case '$':
|
|
case '#':
|
|
t += rb_enc_mbcput('\\', t, enc);
|
|
break;
|
|
case ' ':
|
|
t += rb_enc_mbcput('\\', t, enc);
|
|
t += rb_enc_mbcput(' ', t, enc);
|
|
continue;
|
|
case '\t':
|
|
t += rb_enc_mbcput('\\', t, enc);
|
|
t += rb_enc_mbcput('t', t, enc);
|
|
continue;
|
|
case '\n':
|
|
t += rb_enc_mbcput('\\', t, enc);
|
|
t += rb_enc_mbcput('n', t, enc);
|
|
continue;
|
|
case '\r':
|
|
t += rb_enc_mbcput('\\', t, enc);
|
|
t += rb_enc_mbcput('r', t, enc);
|
|
continue;
|
|
case '\f':
|
|
t += rb_enc_mbcput('\\', t, enc);
|
|
t += rb_enc_mbcput('f', t, enc);
|
|
continue;
|
|
case '\v':
|
|
t += rb_enc_mbcput('\\', t, enc);
|
|
t += rb_enc_mbcput('v', t, enc);
|
|
continue;
|
|
}
|
|
t += rb_enc_mbcput(c, t, enc);
|
|
}
|
|
rb_str_resize(tmp, t - RSTRING_PTR(tmp));
|
|
return tmp;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Regexp.escape(string) -> new_string
|
|
*
|
|
* Returns a new string that escapes any characters
|
|
* that have special meaning in a regular expression:
|
|
*
|
|
* s = Regexp.escape('\*?{}.') # => "\\\\\\*\\?\\{\\}\\."
|
|
*
|
|
* For any string +s+, this call returns a MatchData object:
|
|
*
|
|
* r = Regexp.new(Regexp.escape(s)) # => /\\\\\\\*\\\?\\\{\\\}\\\./
|
|
* r.match(s) # => #<MatchData "\\\\\\*\\?\\{\\}\\.">
|
|
*
|
|
* Regexp.quote is an alias for Regexp.escape.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_s_quote(VALUE c, VALUE str)
|
|
{
|
|
return rb_reg_quote(reg_operand(str, TRUE));
|
|
}
|
|
|
|
int
|
|
rb_reg_options(VALUE re)
|
|
{
|
|
int options;
|
|
|
|
rb_reg_check(re);
|
|
options = RREGEXP_PTR(re)->options & ARG_REG_OPTION_MASK;
|
|
if (RBASIC(re)->flags & KCODE_FIXED) options |= ARG_ENCODING_FIXED;
|
|
if (RBASIC(re)->flags & REG_ENCODING_NONE) options |= ARG_ENCODING_NONE;
|
|
return options;
|
|
}
|
|
|
|
static VALUE
|
|
rb_check_regexp_type(VALUE re)
|
|
{
|
|
return rb_check_convert_type(re, T_REGEXP, "Regexp", "to_regexp");
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Regexp.try_convert(object) -> regexp or nil
|
|
*
|
|
* Returns +object+ if it is a regexp:
|
|
*
|
|
* Regexp.try_convert(/re/) # => /re/
|
|
*
|
|
* Otherwise if +object+ responds to <tt>:to_regexp</tt>,
|
|
* calls <tt>object.to_regexp</tt> and returns the result.
|
|
*
|
|
* Returns +nil+ if +object+ does not respond to <tt>:to_regexp</tt>.
|
|
*
|
|
* Regexp.try_convert('re') # => nil
|
|
*
|
|
* Raises an exception unless <tt>object.to_regexp</tt> returns a regexp.
|
|
*
|
|
*/
|
|
static VALUE
|
|
rb_reg_s_try_convert(VALUE dummy, VALUE re)
|
|
{
|
|
return rb_check_regexp_type(re);
|
|
}
|
|
|
|
static VALUE
|
|
rb_reg_s_union(VALUE self, VALUE args0)
|
|
{
|
|
long argc = RARRAY_LEN(args0);
|
|
|
|
if (argc == 0) {
|
|
VALUE args[1];
|
|
args[0] = rb_str_new2("(?!)");
|
|
return rb_class_new_instance(1, args, rb_cRegexp);
|
|
}
|
|
else if (argc == 1) {
|
|
VALUE arg = rb_ary_entry(args0, 0);
|
|
VALUE re = rb_check_regexp_type(arg);
|
|
if (!NIL_P(re))
|
|
return re;
|
|
else {
|
|
VALUE quoted;
|
|
quoted = rb_reg_s_quote(Qnil, arg);
|
|
return rb_reg_new_str(quoted, 0);
|
|
}
|
|
}
|
|
else {
|
|
int i;
|
|
VALUE source = rb_str_buf_new(0);
|
|
rb_encoding *result_enc;
|
|
|
|
int has_asciionly = 0;
|
|
rb_encoding *has_ascii_compat_fixed = 0;
|
|
rb_encoding *has_ascii_incompat = 0;
|
|
|
|
for (i = 0; i < argc; i++) {
|
|
volatile VALUE v;
|
|
VALUE e = rb_ary_entry(args0, i);
|
|
|
|
if (0 < i)
|
|
rb_str_buf_cat_ascii(source, "|");
|
|
|
|
v = rb_check_regexp_type(e);
|
|
if (!NIL_P(v)) {
|
|
rb_encoding *enc = rb_enc_get(v);
|
|
if (!rb_enc_asciicompat(enc)) {
|
|
if (!has_ascii_incompat)
|
|
has_ascii_incompat = enc;
|
|
else if (has_ascii_incompat != enc)
|
|
rb_raise(rb_eArgError, "incompatible encodings: %s and %s",
|
|
rb_enc_name(has_ascii_incompat), rb_enc_name(enc));
|
|
}
|
|
else if (rb_reg_fixed_encoding_p(v)) {
|
|
if (!has_ascii_compat_fixed)
|
|
has_ascii_compat_fixed = enc;
|
|
else if (has_ascii_compat_fixed != enc)
|
|
rb_raise(rb_eArgError, "incompatible encodings: %s and %s",
|
|
rb_enc_name(has_ascii_compat_fixed), rb_enc_name(enc));
|
|
}
|
|
else {
|
|
has_asciionly = 1;
|
|
}
|
|
v = rb_reg_str_with_term(v, -1);
|
|
}
|
|
else {
|
|
rb_encoding *enc;
|
|
StringValue(e);
|
|
enc = rb_enc_get(e);
|
|
if (!rb_enc_asciicompat(enc)) {
|
|
if (!has_ascii_incompat)
|
|
has_ascii_incompat = enc;
|
|
else if (has_ascii_incompat != enc)
|
|
rb_raise(rb_eArgError, "incompatible encodings: %s and %s",
|
|
rb_enc_name(has_ascii_incompat), rb_enc_name(enc));
|
|
}
|
|
else if (rb_enc_str_asciionly_p(e)) {
|
|
has_asciionly = 1;
|
|
}
|
|
else {
|
|
if (!has_ascii_compat_fixed)
|
|
has_ascii_compat_fixed = enc;
|
|
else if (has_ascii_compat_fixed != enc)
|
|
rb_raise(rb_eArgError, "incompatible encodings: %s and %s",
|
|
rb_enc_name(has_ascii_compat_fixed), rb_enc_name(enc));
|
|
}
|
|
v = rb_reg_s_quote(Qnil, e);
|
|
}
|
|
if (has_ascii_incompat) {
|
|
if (has_asciionly) {
|
|
rb_raise(rb_eArgError, "ASCII incompatible encoding: %s",
|
|
rb_enc_name(has_ascii_incompat));
|
|
}
|
|
if (has_ascii_compat_fixed) {
|
|
rb_raise(rb_eArgError, "incompatible encodings: %s and %s",
|
|
rb_enc_name(has_ascii_incompat), rb_enc_name(has_ascii_compat_fixed));
|
|
}
|
|
}
|
|
|
|
if (i == 0) {
|
|
rb_enc_copy(source, v);
|
|
}
|
|
rb_str_append(source, v);
|
|
}
|
|
|
|
if (has_ascii_incompat) {
|
|
result_enc = has_ascii_incompat;
|
|
}
|
|
else if (has_ascii_compat_fixed) {
|
|
result_enc = has_ascii_compat_fixed;
|
|
}
|
|
else {
|
|
result_enc = rb_ascii8bit_encoding();
|
|
}
|
|
|
|
rb_enc_associate(source, result_enc);
|
|
return rb_class_new_instance(1, &source, rb_cRegexp);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Regexp.union(*patterns) -> regexp
|
|
* Regexp.union(array_of_patterns) -> regexp
|
|
*
|
|
* Returns a new regexp that is the union of the given patterns:
|
|
*
|
|
* r = Regexp.union(%w[cat dog]) # => /cat|dog/
|
|
* r.match('cat') # => #<MatchData "cat">
|
|
* r.match('dog') # => #<MatchData "dog">
|
|
* r.match('cog') # => nil
|
|
*
|
|
* For each pattern that is a string, <tt>Regexp.new(pattern)</tt> is used:
|
|
*
|
|
* Regexp.union('penzance') # => /penzance/
|
|
* Regexp.union('a+b*c') # => /a\+b\*c/
|
|
* Regexp.union('skiing', 'sledding') # => /skiing|sledding/
|
|
* Regexp.union(['skiing', 'sledding']) # => /skiing|sledding/
|
|
*
|
|
* For each pattern that is a regexp, it is used as is,
|
|
* including its flags:
|
|
*
|
|
* Regexp.union(/foo/i, /bar/m, /baz/x)
|
|
* # => /(?i-mx:foo)|(?m-ix:bar)|(?x-mi:baz)/
|
|
* Regexp.union([/foo/i, /bar/m, /baz/x])
|
|
* # => /(?i-mx:foo)|(?m-ix:bar)|(?x-mi:baz)/
|
|
*
|
|
* With no arguments, returns <tt>/(?!)/</tt>:
|
|
*
|
|
* Regexp.union # => /(?!)/
|
|
*
|
|
* If any regexp pattern contains captures, the behavior is unspecified.
|
|
*
|
|
*/
|
|
static VALUE
|
|
rb_reg_s_union_m(VALUE self, VALUE args)
|
|
{
|
|
VALUE v;
|
|
if (RARRAY_LEN(args) == 1 &&
|
|
!NIL_P(v = rb_check_array_type(rb_ary_entry(args, 0)))) {
|
|
return rb_reg_s_union(self, v);
|
|
}
|
|
return rb_reg_s_union(self, args);
|
|
}
|
|
|
|
/* :nodoc: */
|
|
static VALUE
|
|
rb_reg_init_copy(VALUE copy, VALUE re)
|
|
{
|
|
if (!OBJ_INIT_COPY(copy, re)) return copy;
|
|
rb_reg_check(re);
|
|
return rb_reg_init_str(copy, RREGEXP_SRC(re), rb_reg_options(re));
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_regsub(VALUE str, VALUE src, struct re_registers *regs, VALUE regexp)
|
|
{
|
|
VALUE val = 0;
|
|
char *p, *s, *e;
|
|
int no, clen;
|
|
rb_encoding *str_enc = rb_enc_get(str);
|
|
rb_encoding *src_enc = rb_enc_get(src);
|
|
int acompat = rb_enc_asciicompat(str_enc);
|
|
long n;
|
|
#define ASCGET(s,e,cl) (acompat ? (*(cl)=1,ISASCII((s)[0])?(s)[0]:-1) : rb_enc_ascget((s), (e), (cl), str_enc))
|
|
|
|
RSTRING_GETMEM(str, s, n);
|
|
p = s;
|
|
e = s + n;
|
|
|
|
while (s < e) {
|
|
int c = ASCGET(s, e, &clen);
|
|
char *ss;
|
|
|
|
if (c == -1) {
|
|
s += mbclen(s, e, str_enc);
|
|
continue;
|
|
}
|
|
ss = s;
|
|
s += clen;
|
|
|
|
if (c != '\\' || s == e) continue;
|
|
|
|
if (!val) {
|
|
val = rb_str_buf_new(ss-p);
|
|
}
|
|
rb_enc_str_buf_cat(val, p, ss-p, str_enc);
|
|
|
|
c = ASCGET(s, e, &clen);
|
|
if (c == -1) {
|
|
s += mbclen(s, e, str_enc);
|
|
rb_enc_str_buf_cat(val, ss, s-ss, str_enc);
|
|
p = s;
|
|
continue;
|
|
}
|
|
s += clen;
|
|
|
|
p = s;
|
|
switch (c) {
|
|
case '1': case '2': case '3': case '4':
|
|
case '5': case '6': case '7': case '8': case '9':
|
|
if (!NIL_P(regexp) && onig_noname_group_capture_is_active(RREGEXP_PTR(regexp))) {
|
|
no = c - '0';
|
|
}
|
|
else {
|
|
continue;
|
|
}
|
|
break;
|
|
|
|
case 'k':
|
|
if (s < e && ASCGET(s, e, &clen) == '<') {
|
|
char *name, *name_end;
|
|
|
|
name_end = name = s + clen;
|
|
while (name_end < e) {
|
|
c = ASCGET(name_end, e, &clen);
|
|
if (c == '>') break;
|
|
name_end += c == -1 ? mbclen(name_end, e, str_enc) : clen;
|
|
}
|
|
if (name_end < e) {
|
|
VALUE n = rb_str_subseq(str, (long)(name - RSTRING_PTR(str)),
|
|
(long)(name_end - name));
|
|
if ((no = NAME_TO_NUMBER(regs, regexp, n, name, name_end)) < 1) {
|
|
name_to_backref_error(n);
|
|
}
|
|
p = s = name_end + clen;
|
|
break;
|
|
}
|
|
else {
|
|
rb_raise(rb_eRuntimeError, "invalid group name reference format");
|
|
}
|
|
}
|
|
|
|
rb_enc_str_buf_cat(val, ss, s-ss, str_enc);
|
|
continue;
|
|
|
|
case '0':
|
|
case '&':
|
|
no = 0;
|
|
break;
|
|
|
|
case '`':
|
|
rb_enc_str_buf_cat(val, RSTRING_PTR(src), BEG(0), src_enc);
|
|
continue;
|
|
|
|
case '\'':
|
|
rb_enc_str_buf_cat(val, RSTRING_PTR(src)+END(0), RSTRING_LEN(src)-END(0), src_enc);
|
|
continue;
|
|
|
|
case '+':
|
|
no = regs->num_regs-1;
|
|
while (BEG(no) == -1 && no > 0) no--;
|
|
if (no == 0) continue;
|
|
break;
|
|
|
|
case '\\':
|
|
rb_enc_str_buf_cat(val, s-clen, clen, str_enc);
|
|
continue;
|
|
|
|
default:
|
|
rb_enc_str_buf_cat(val, ss, s-ss, str_enc);
|
|
continue;
|
|
}
|
|
|
|
if (no >= 0) {
|
|
if (no >= regs->num_regs) continue;
|
|
if (BEG(no) == -1) continue;
|
|
rb_enc_str_buf_cat(val, RSTRING_PTR(src)+BEG(no), END(no)-BEG(no), src_enc);
|
|
}
|
|
}
|
|
|
|
if (!val) return str;
|
|
if (p < e) {
|
|
rb_enc_str_buf_cat(val, p, e-p, str_enc);
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
static VALUE
|
|
ignorecase_getter(ID _x, VALUE *_y)
|
|
{
|
|
rb_category_warn(RB_WARN_CATEGORY_DEPRECATED, "variable $= is no longer effective");
|
|
return Qfalse;
|
|
}
|
|
|
|
static void
|
|
ignorecase_setter(VALUE val, ID id, VALUE *_)
|
|
{
|
|
rb_category_warn(RB_WARN_CATEGORY_DEPRECATED, "variable $= is no longer effective; ignored");
|
|
}
|
|
|
|
static VALUE
|
|
match_getter(void)
|
|
{
|
|
VALUE match = rb_backref_get();
|
|
|
|
if (NIL_P(match)) return Qnil;
|
|
rb_match_busy(match);
|
|
return match;
|
|
}
|
|
|
|
static VALUE
|
|
get_LAST_MATCH_INFO(ID _x, VALUE *_y)
|
|
{
|
|
return match_getter();
|
|
}
|
|
|
|
static void
|
|
match_setter(VALUE val, ID _x, VALUE *_y)
|
|
{
|
|
if (!NIL_P(val)) {
|
|
Check_Type(val, T_MATCH);
|
|
}
|
|
rb_backref_set(val);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Regexp.last_match -> matchdata or nil
|
|
* Regexp.last_match(n) -> string or nil
|
|
* Regexp.last_match(name) -> string or nil
|
|
*
|
|
* With no argument, returns the value of <tt>$!</tt>,
|
|
* which is the result of the most recent pattern match
|
|
* (see {Regexp Global Variables}[rdoc-ref:Regexp@Regexp+Global+Variables]):
|
|
*
|
|
* /c(.)t/ =~ 'cat' # => 0
|
|
* Regexp.last_match # => #<MatchData "cat" 1:"a">
|
|
* /a/ =~ 'foo' # => nil
|
|
* Regexp.last_match # => nil
|
|
*
|
|
* With non-negative integer argument +n+, returns the _n_th field in the
|
|
* matchdata, if any, or nil if none:
|
|
*
|
|
* /c(.)t/ =~ 'cat' # => 0
|
|
* Regexp.last_match(0) # => "cat"
|
|
* Regexp.last_match(1) # => "a"
|
|
* Regexp.last_match(2) # => nil
|
|
*
|
|
* With negative integer argument +n+, counts backwards from the last field:
|
|
*
|
|
* Regexp.last_match(-1) # => "a"
|
|
*
|
|
* With string or symbol argument +name+,
|
|
* returns the string value for the named capture, if any:
|
|
*
|
|
* /(?<lhs>\w+)\s*=\s*(?<rhs>\w+)/ =~ 'var = val'
|
|
* Regexp.last_match # => #<MatchData "var = val" lhs:"var"rhs:"val">
|
|
* Regexp.last_match(:lhs) # => "var"
|
|
* Regexp.last_match('rhs') # => "val"
|
|
* Regexp.last_match('foo') # Raises IndexError.
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_s_last_match(int argc, VALUE *argv, VALUE _)
|
|
{
|
|
if (rb_check_arity(argc, 0, 1) == 1) {
|
|
VALUE match = rb_backref_get();
|
|
int n;
|
|
if (NIL_P(match)) return Qnil;
|
|
n = match_backref_number(match, argv[0]);
|
|
return rb_reg_nth_match(n, match);
|
|
}
|
|
return match_getter();
|
|
}
|
|
|
|
static void
|
|
re_warn(const char *s)
|
|
{
|
|
rb_warn("%s", s);
|
|
}
|
|
|
|
// The process-global timeout for regexp matching
|
|
rb_hrtime_t rb_reg_match_time_limit = 0;
|
|
|
|
// This function is periodically called during regexp matching
|
|
void
|
|
rb_reg_check_timeout(regex_t *reg, void *end_time_)
|
|
{
|
|
rb_hrtime_t *end_time = (rb_hrtime_t *)end_time_;
|
|
|
|
if (*end_time == 0) {
|
|
// This is the first time to check interrupts;
|
|
// just measure the current time and determine the end time
|
|
// if timeout is set.
|
|
rb_hrtime_t timelimit = reg->timelimit;
|
|
|
|
if (!timelimit) {
|
|
// no per-object timeout.
|
|
timelimit = rb_reg_match_time_limit;
|
|
}
|
|
|
|
if (timelimit) {
|
|
*end_time = rb_hrtime_add(timelimit, rb_hrtime_now());
|
|
}
|
|
else {
|
|
// no timeout is set
|
|
*end_time = RB_HRTIME_MAX;
|
|
}
|
|
}
|
|
else {
|
|
if (*end_time < rb_hrtime_now()) {
|
|
// timeout is exceeded
|
|
rb_raise(rb_eRegexpTimeoutError, "regexp match timeout");
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Regexp.timeout -> float or nil
|
|
*
|
|
* It returns the current default timeout interval for Regexp matching in second.
|
|
* +nil+ means no default timeout configuration.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_s_timeout_get(VALUE dummy)
|
|
{
|
|
double d = hrtime2double(rb_reg_match_time_limit);
|
|
if (d == 0.0) return Qnil;
|
|
return DBL2NUM(d);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Regexp.timeout = float or nil
|
|
*
|
|
* It sets the default timeout interval for Regexp matching in second.
|
|
* +nil+ means no default timeout configuration.
|
|
* This configuration is process-global. If you want to set timeout for
|
|
* each Regexp, use +timeout+ keyword for <code>Regexp.new</code>.
|
|
*
|
|
* Regexp.timeout = 1
|
|
* /^a*b?a*$/ =~ "a" * 100000 + "x" #=> regexp match timeout (RuntimeError)
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_s_timeout_set(VALUE dummy, VALUE limit)
|
|
{
|
|
double timeout = NIL_P(limit) ? 0.0 : NUM2DBL(limit);
|
|
|
|
rb_ractor_ensure_main_ractor("can not access Regexp.timeout from non-main Ractors");
|
|
|
|
if (timeout < 0) timeout = 0;
|
|
double2hrtime(&rb_reg_match_time_limit, timeout);
|
|
|
|
return limit;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* rxp.timeout -> float or nil
|
|
*
|
|
* It returns the timeout interval for Regexp matching in second.
|
|
* +nil+ means no default timeout configuration.
|
|
*
|
|
* This configuration is per-object. The global configuration set by
|
|
* Regexp.timeout= is ignored if per-object configuration is set.
|
|
*
|
|
* re = Regexp.new("^a*b?a*$", timeout: 1)
|
|
* re.timeout #=> 1.0
|
|
* re =~ "a" * 100000 + "x" #=> regexp match timeout (RuntimeError)
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_timeout_get(VALUE re)
|
|
{
|
|
rb_reg_check(re);
|
|
double d = hrtime2double(RREGEXP_PTR(re)->timelimit);
|
|
if (d == 0.0) return Qnil;
|
|
return DBL2NUM(d);
|
|
}
|
|
|
|
/*
|
|
* Document-class: RegexpError
|
|
*
|
|
* Raised when given an invalid regexp expression.
|
|
*
|
|
* Regexp.new("?")
|
|
*
|
|
* <em>raises the exception:</em>
|
|
*
|
|
* RegexpError: target of repeat operator is not specified: /?/
|
|
*/
|
|
|
|
/*
|
|
* Document-class: Regexp
|
|
*
|
|
* :include: doc/regexp.rdoc
|
|
*/
|
|
|
|
void
|
|
Init_Regexp(void)
|
|
{
|
|
rb_eRegexpError = rb_define_class("RegexpError", rb_eStandardError);
|
|
|
|
onigenc_set_default_encoding(ONIG_ENCODING_ASCII);
|
|
onig_set_warn_func(re_warn);
|
|
onig_set_verb_warn_func(re_warn);
|
|
|
|
rb_define_virtual_variable("$~", get_LAST_MATCH_INFO, match_setter);
|
|
rb_define_virtual_variable("$&", last_match_getter, 0);
|
|
rb_define_virtual_variable("$`", prematch_getter, 0);
|
|
rb_define_virtual_variable("$'", postmatch_getter, 0);
|
|
rb_define_virtual_variable("$+", last_paren_match_getter, 0);
|
|
|
|
rb_gvar_ractor_local("$~");
|
|
rb_gvar_ractor_local("$&");
|
|
rb_gvar_ractor_local("$`");
|
|
rb_gvar_ractor_local("$'");
|
|
rb_gvar_ractor_local("$+");
|
|
|
|
rb_define_virtual_variable("$=", ignorecase_getter, ignorecase_setter);
|
|
|
|
rb_cRegexp = rb_define_class("Regexp", rb_cObject);
|
|
rb_define_alloc_func(rb_cRegexp, rb_reg_s_alloc);
|
|
rb_define_singleton_method(rb_cRegexp, "compile", rb_class_new_instance, -1);
|
|
rb_define_singleton_method(rb_cRegexp, "quote", rb_reg_s_quote, 1);
|
|
rb_define_singleton_method(rb_cRegexp, "escape", rb_reg_s_quote, 1);
|
|
rb_define_singleton_method(rb_cRegexp, "union", rb_reg_s_union_m, -2);
|
|
rb_define_singleton_method(rb_cRegexp, "last_match", rb_reg_s_last_match, -1);
|
|
rb_define_singleton_method(rb_cRegexp, "try_convert", rb_reg_s_try_convert, 1);
|
|
|
|
rb_define_method(rb_cRegexp, "initialize", rb_reg_initialize_m, -1);
|
|
rb_define_method(rb_cRegexp, "initialize_copy", rb_reg_init_copy, 1);
|
|
rb_define_method(rb_cRegexp, "hash", rb_reg_hash, 0);
|
|
rb_define_method(rb_cRegexp, "eql?", rb_reg_equal, 1);
|
|
rb_define_method(rb_cRegexp, "==", rb_reg_equal, 1);
|
|
rb_define_method(rb_cRegexp, "=~", rb_reg_match, 1);
|
|
rb_define_method(rb_cRegexp, "===", rb_reg_eqq, 1);
|
|
rb_define_method(rb_cRegexp, "~", rb_reg_match2, 0);
|
|
rb_define_method(rb_cRegexp, "match", rb_reg_match_m, -1);
|
|
rb_define_method(rb_cRegexp, "match?", rb_reg_match_m_p, -1);
|
|
rb_define_method(rb_cRegexp, "to_s", rb_reg_to_s, 0);
|
|
rb_define_method(rb_cRegexp, "inspect", rb_reg_inspect, 0);
|
|
rb_define_method(rb_cRegexp, "source", rb_reg_source, 0);
|
|
rb_define_method(rb_cRegexp, "casefold?", rb_reg_casefold_p, 0);
|
|
rb_define_method(rb_cRegexp, "options", rb_reg_options_m, 0);
|
|
rb_define_method(rb_cRegexp, "encoding", rb_obj_encoding, 0); /* in encoding.c */
|
|
rb_define_method(rb_cRegexp, "fixed_encoding?", rb_reg_fixed_encoding_p, 0);
|
|
rb_define_method(rb_cRegexp, "names", rb_reg_names, 0);
|
|
rb_define_method(rb_cRegexp, "named_captures", rb_reg_named_captures, 0);
|
|
rb_define_method(rb_cRegexp, "timeout", rb_reg_timeout_get, 0);
|
|
|
|
rb_eRegexpTimeoutError = rb_define_class_under(rb_cRegexp, "TimeoutError", rb_eRegexpError);
|
|
rb_define_singleton_method(rb_cRegexp, "timeout", rb_reg_s_timeout_get, 0);
|
|
rb_define_singleton_method(rb_cRegexp, "timeout=", rb_reg_s_timeout_set, 1);
|
|
|
|
/* see Regexp.options and Regexp.new */
|
|
rb_define_const(rb_cRegexp, "IGNORECASE", INT2FIX(ONIG_OPTION_IGNORECASE));
|
|
/* see Regexp.options and Regexp.new */
|
|
rb_define_const(rb_cRegexp, "EXTENDED", INT2FIX(ONIG_OPTION_EXTEND));
|
|
/* see Regexp.options and Regexp.new */
|
|
rb_define_const(rb_cRegexp, "MULTILINE", INT2FIX(ONIG_OPTION_MULTILINE));
|
|
/* see Regexp.options and Regexp.new */
|
|
rb_define_const(rb_cRegexp, "FIXEDENCODING", INT2FIX(ARG_ENCODING_FIXED));
|
|
/* see Regexp.options and Regexp.new */
|
|
rb_define_const(rb_cRegexp, "NOENCODING", INT2FIX(ARG_ENCODING_NONE));
|
|
|
|
rb_global_variable(®_cache);
|
|
|
|
rb_cMatch = rb_define_class("MatchData", rb_cObject);
|
|
rb_define_alloc_func(rb_cMatch, match_alloc);
|
|
rb_undef_method(CLASS_OF(rb_cMatch), "new");
|
|
rb_undef_method(CLASS_OF(rb_cMatch), "allocate");
|
|
|
|
rb_define_method(rb_cMatch, "initialize_copy", match_init_copy, 1);
|
|
rb_define_method(rb_cMatch, "regexp", match_regexp, 0);
|
|
rb_define_method(rb_cMatch, "names", match_names, 0);
|
|
rb_define_method(rb_cMatch, "size", match_size, 0);
|
|
rb_define_method(rb_cMatch, "length", match_size, 0);
|
|
rb_define_method(rb_cMatch, "offset", match_offset, 1);
|
|
rb_define_method(rb_cMatch, "byteoffset", match_byteoffset, 1);
|
|
rb_define_method(rb_cMatch, "begin", match_begin, 1);
|
|
rb_define_method(rb_cMatch, "end", match_end, 1);
|
|
rb_define_method(rb_cMatch, "match", match_nth, 1);
|
|
rb_define_method(rb_cMatch, "match_length", match_nth_length, 1);
|
|
rb_define_method(rb_cMatch, "to_a", match_to_a, 0);
|
|
rb_define_method(rb_cMatch, "[]", match_aref, -1);
|
|
rb_define_method(rb_cMatch, "captures", match_captures, 0);
|
|
rb_define_method(rb_cMatch, "named_captures", match_named_captures, 0);
|
|
rb_define_method(rb_cMatch, "values_at", match_values_at, -1);
|
|
rb_define_method(rb_cMatch, "pre_match", rb_reg_match_pre, 0);
|
|
rb_define_method(rb_cMatch, "post_match", rb_reg_match_post, 0);
|
|
rb_define_method(rb_cMatch, "to_s", match_to_s, 0);
|
|
rb_define_method(rb_cMatch, "inspect", match_inspect, 0);
|
|
rb_define_method(rb_cMatch, "string", match_string, 0);
|
|
rb_define_method(rb_cMatch, "hash", match_hash, 0);
|
|
rb_define_method(rb_cMatch, "eql?", match_equal, 1);
|
|
rb_define_method(rb_cMatch, "==", match_equal, 1);
|
|
}
|