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10317605f0
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26854 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
3521 lines
89 KiB
C
3521 lines
89 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/ruby.h"
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#include "ruby/re.h"
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#include "ruby/encoding.h"
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#include "ruby/util.h"
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#include "regint.h"
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#include <ctype.h>
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VALUE rb_eRegexpError;
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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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#undef rb_memcmp
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int
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rb_memcmp(const void *p1, const void *p2, long len)
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{
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return memcmp(p1, p2, len);
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}
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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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#ifndef VALUE_MAX
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# if SIZEOF_VALUE == 8
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# define VALUE_MAX 0xFFFFFFFFFFFFFFFFULL
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# elif SIZEOF_VALUE == 4
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# define VALUE_MAX 0xFFFFFFFFUL
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# endif
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#endif
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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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/* 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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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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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 = y, *ye = ys + n;
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for (; y < ye; ++y) {
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if (*x == *y)
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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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else 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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else {
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return rb_memsearch_qs(x0, m, y0, n);
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}
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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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static char *
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option_to_str(char str[4], 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 = rb_enc_find_index("EUC-JP");
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break;
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case 's':
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*kcode = rb_enc_find_index("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(re)->ptr || !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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{
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rb_encoding *enc = rb_enc_get(str);
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const char *p, *pend;
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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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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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p += mbclen(p, pend, enc);
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}
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else if (c != '/' && 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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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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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 == '/') {
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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 (c == -1) {
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int l = mbclen(p, pend, enc);
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rb_str_buf_cat(str, p, l);
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p += l;
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continue;
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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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}
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else if (!rb_enc_isspace(c, enc)) {
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char b[8];
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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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}
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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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VALUE str = rb_str_buf_new2("/");
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if (re && rb_enc_asciicompat(rb_enc_get(re))) {
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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);
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rb_str_buf_cat2(str, "/");
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if (re) {
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char opts[4];
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rb_reg_check(re);
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if (*option_to_str(opts, RREGEXP(re)->ptr->options))
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rb_str_buf_cat2(str, opts);
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}
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OBJ_INFECT(str, re);
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return str;
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}
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/*
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* call-seq:
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* rxp.source => str
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*
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* Returns the original string of the pattern.
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*
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* /ab+c/ix.source #=> "ab+c"
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*
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* Note that escape sequences are retained as is.
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*
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* /\x20\+/.source #=> "\\x20\\+"
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*
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*/
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static VALUE
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rb_reg_source(VALUE re)
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{
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VALUE str;
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rb_reg_check(re);
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str = rb_enc_str_new(RREGEXP_SRC_PTR(re),RREGEXP_SRC_LEN(re), rb_enc_get(re));
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if (OBJ_TAINTED(re)) OBJ_TAINT(str);
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return str;
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}
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/*
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* call-seq:
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* rxp.inspect => string
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*
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* Produce a nicely formatted string-version of _rxp_. Perhaps surprisingly,
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* <code>#inspect</code> actually produces the more natural version of
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* the string than <code>#to_s</code>.
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*
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* /ab+c/ix.inspect #=> "/ab+c/ix"
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*
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*/
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static VALUE
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rb_reg_inspect(VALUE re)
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{
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if (!RREGEXP(re)->ptr || !RREGEXP_SRC(re) || !RREGEXP_SRC_PTR(re)) {
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return rb_any_to_s(re);
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}
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return rb_reg_desc(RREGEXP_SRC_PTR(re), RREGEXP_SRC_LEN(re), re);
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}
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/*
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* call-seq:
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* rxp.to_s => str
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*
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* Returns a string containing the regular expression and its options (using the
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* <code>(?opts:source)</code> notation. This string can be fed back in to
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* <code>Regexp::new</code> to a regular expression with the same semantics as
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* the original. (However, <code>Regexp#==</code> may not return true when
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* comparing the two, as the source of the regular expression itself may
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* differ, as the example shows). <code>Regexp#inspect</code> produces a
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* generally more readable version of <i>rxp</i>.
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*
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* r1 = /ab+c/ix #=> /ab+c/ix
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* s1 = r1.to_s #=> "(?ix-m:ab+c)"
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* r2 = Regexp.new(s1) #=> /(?ix-m:ab+c)/
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* r1 == r2 #=> false
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* r1.source #=> "ab+c"
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* r2.source #=> "(?ix-m:ab+c)"
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*/
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static VALUE
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rb_reg_to_s(VALUE re)
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{
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int options, opt;
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const int embeddable = ONIG_OPTION_MULTILINE|ONIG_OPTION_IGNORECASE|ONIG_OPTION_EXTEND;
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long len;
|
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const UChar* ptr;
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VALUE str = rb_str_buf_new2("(?");
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char optbuf[5];
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rb_reg_check(re);
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rb_enc_copy(str, re);
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options = RREGEXP(re)->ptr->options;
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ptr = (UChar*)RREGEXP_SRC_PTR(re);
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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;
|
|
|
|
++ptr;
|
|
len -= 2;
|
|
err = onig_new(&rp, ptr, ptr + len, ONIG_OPTION_DEFAULT,
|
|
rb_enc_get(re), OnigDefaultSyntax, NULL);
|
|
onig_free(rp);
|
|
}
|
|
if (err) {
|
|
options = RREGEXP(re)->ptr->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, ":");
|
|
rb_reg_expr_str(str, (char*)ptr, len);
|
|
rb_str_buf_cat2(str, ")");
|
|
rb_enc_copy(str, re);
|
|
|
|
OBJ_INFECT(str, re);
|
|
return str;
|
|
}
|
|
|
|
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: %s", err, RSTRING_PTR(desc));
|
|
}
|
|
|
|
static VALUE
|
|
rb_enc_reg_error_desc(const char *s, long len, rb_encoding *enc, int options, const char *err)
|
|
{
|
|
char opts[6];
|
|
VALUE desc = rb_str_buf_new2(err);
|
|
|
|
rb_enc_associate(desc, enc);
|
|
rb_str_buf_cat2(desc, ": /");
|
|
rb_reg_expr_str(desc, s, len);
|
|
opts[0] = '/';
|
|
option_to_str(opts + 1, options);
|
|
rb_str_buf_cat2(desc, opts);
|
|
return rb_exc_new3(rb_eRegexpError, desc);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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:
|
|
* rxp.casefold? => true or false
|
|
*
|
|
* Returns the value of the case-insensitive flag.
|
|
*
|
|
* /a/.casefold? #=> false
|
|
* /a/i.casefold? #=> true
|
|
* /(?i:a)/.casefold? #=> false
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_casefold_p(VALUE re)
|
|
{
|
|
rb_reg_check(re);
|
|
if (RREGEXP(re)->ptr->options & ONIG_OPTION_IGNORECASE) return Qtrue;
|
|
return Qfalse;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* rxp.options => fixnum
|
|
*
|
|
* Returns the set of bits corresponding to the options used when creating this
|
|
* Regexp (see <code>Regexp::new</code> 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
|
|
* <code>Regexp::new</code>.
|
|
*
|
|
* Regexp::IGNORECASE #=> 1
|
|
* Regexp::EXTENDED #=> 2
|
|
* Regexp::MULTILINE #=> 4
|
|
*
|
|
* /cat/.options #=> 0
|
|
* /cat/ix.options #=> 3
|
|
* Regexp.new('cat', true).options #=> 1
|
|
* /\xa1\xa2/e.options #=> 16
|
|
*
|
|
* r = /cat/ix
|
|
* Regexp.new(r.source, r.options) #=> /cat/ix
|
|
*/
|
|
|
|
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_str_new((const char *)name, name_end-name));
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* rxp.names => [name1, name2, ...]
|
|
*
|
|
* Returns a list of names of captures as an array of strings.
|
|
*
|
|
* /(?<foo>.)(?<bar>.)(?<baz>.)/.names
|
|
* #=> ["foo", "bar", "baz"]
|
|
*
|
|
* /(?<foo>.)(?<foo>.)/.names
|
|
* #=> ["foo"]
|
|
*
|
|
* /(.)(.)/.names
|
|
* #=> []
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_names(VALUE re)
|
|
{
|
|
VALUE ary = rb_ary_new();
|
|
rb_reg_check(re);
|
|
onig_foreach_name(RREGEXP(re)->ptr, 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:
|
|
* rxp.named_captures => hash
|
|
*
|
|
* Returns a hash representing information about named captures of <i>rxp</i>.
|
|
*
|
|
* A key of the hash is a name of the named captures.
|
|
* A value of the hash is an array which is list of indexes of corresponding
|
|
* named captures.
|
|
*
|
|
* /(?<foo>.)(?<bar>.)/.named_captures
|
|
* #=> {"foo"=>[1], "bar"=>[2]}
|
|
*
|
|
* /(?<foo>.)(?<foo>.)/.named_captures
|
|
* #=> {"foo"=>[1, 2]}
|
|
*
|
|
* If there are no named captures, an empty hash is returned.
|
|
*
|
|
* /(.)(.)/.named_captures
|
|
* #=> {}
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_named_captures(VALUE re)
|
|
{
|
|
VALUE hash = rb_hash_new();
|
|
rb_reg_check(re);
|
|
onig_foreach_name(RREGEXP(re)->ptr, reg_named_captures_iter, (void*)hash);
|
|
return hash;
|
|
}
|
|
|
|
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(&rp, (UChar*)s, (UChar*)(s + len), flags,
|
|
enc, OnigDefaultSyntax, &einfo);
|
|
if (r) {
|
|
onig_error_code_to_str((UChar*)err, r, &einfo);
|
|
return 0;
|
|
}
|
|
return rp;
|
|
}
|
|
|
|
|
|
/*
|
|
* Document-class: MatchData
|
|
*
|
|
* <code>MatchData</code> is the type of the special variable <code>$~</code>,
|
|
* and is the type of the object returned by <code>Regexp#match</code> and
|
|
* <code>Regexp.last_match</code>. It encapsulates all the results of a pattern
|
|
* match, results normally accessed through the special variables
|
|
* <code>$&</code>, <code>$'</code>, <code>$`</code>, <code>$1</code>,
|
|
* <code>$2</code>, and so on.
|
|
*
|
|
*/
|
|
|
|
VALUE rb_cMatch;
|
|
|
|
static VALUE
|
|
match_alloc(VALUE klass)
|
|
{
|
|
NEWOBJ(match, struct RMatch);
|
|
OBJSETUP(match, klass, T_MATCH);
|
|
|
|
match->str = 0;
|
|
match->rmatch = 0;
|
|
match->regexp = 0;
|
|
match->rmatch = ALLOC(struct rmatch);
|
|
MEMZERO(match->rmatch, struct rmatch, 1);
|
|
|
|
return (VALUE)match;
|
|
}
|
|
|
|
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, *e;
|
|
rb_encoding *enc;
|
|
pair_t *pairs;
|
|
|
|
if (rm->char_offset_updated)
|
|
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);
|
|
}
|
|
rm->char_offset_updated = 1;
|
|
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);
|
|
e = s + RSTRING_LEN(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;
|
|
}
|
|
|
|
rm->char_offset_updated = 1;
|
|
}
|
|
|
|
static void
|
|
match_check(VALUE match)
|
|
{
|
|
if (!RMATCH(match)->regexp) {
|
|
rb_raise(rb_eTypeError, "uninitialized Match");
|
|
}
|
|
}
|
|
|
|
/* :nodoc: */
|
|
static VALUE
|
|
match_init_copy(VALUE obj, VALUE orig)
|
|
{
|
|
struct rmatch *rm;
|
|
|
|
if (obj == orig) return obj;
|
|
|
|
if (!rb_obj_is_instance_of(orig, rb_obj_class(obj))) {
|
|
rb_raise(rb_eTypeError, "wrong argument class");
|
|
}
|
|
RMATCH(obj)->str = RMATCH(orig)->str;
|
|
RMATCH(obj)->regexp = RMATCH(orig)->regexp;
|
|
|
|
rm = RMATCH(obj)->rmatch;
|
|
onig_region_copy(&rm->regs, RMATCH_REGS(orig));
|
|
|
|
if (!RMATCH(orig)->rmatch->char_offset_updated) {
|
|
rm->char_offset_updated = 0;
|
|
}
|
|
else {
|
|
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);
|
|
rm->char_offset_updated = 1;
|
|
}
|
|
|
|
return obj;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch.regexp => regexp
|
|
*
|
|
* Returns the regexp.
|
|
*
|
|
* m = /a.*b/.match("abc")
|
|
* m.regexp #=> /a.*b/
|
|
*/
|
|
|
|
static VALUE
|
|
match_regexp(VALUE match)
|
|
{
|
|
match_check(match);
|
|
return RMATCH(match)->regexp;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch.names => [name1, name2, ...]
|
|
*
|
|
* Returns a list of names of captures as an array of strings.
|
|
* It is same as mtch.regexp.names.
|
|
*
|
|
* /(?<foo>.)(?<bar>.)(?<baz>.)/.match("hoge").names
|
|
* #=> ["foo", "bar", "baz"]
|
|
*
|
|
* m = /(?<x>.)(?<y>.)?/.match("a") #=> #<MatchData "a" x:"a" y:nil>
|
|
* m.names #=> ["x", "y"]
|
|
*/
|
|
|
|
static VALUE
|
|
match_names(VALUE match)
|
|
{
|
|
match_check(match);
|
|
return rb_reg_names(RMATCH(match)->regexp);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch.length => integer
|
|
* mtch.size => integer
|
|
*
|
|
* Returns the number of elements in the match array.
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* m.length #=> 5
|
|
* m.size #=> 5
|
|
*/
|
|
|
|
static VALUE
|
|
match_size(VALUE match)
|
|
{
|
|
match_check(match);
|
|
return INT2FIX(RMATCH_REGS(match)->num_regs);
|
|
}
|
|
|
|
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);
|
|
switch(TYPE(backref)) {
|
|
default:
|
|
return NUM2INT(backref);
|
|
|
|
case T_SYMBOL:
|
|
name = rb_id2name(SYM2ID(backref));
|
|
break;
|
|
|
|
case T_STRING:
|
|
name = StringValueCStr(backref);
|
|
break;
|
|
}
|
|
|
|
num = onig_name_to_backref_number(RREGEXP(regexp)->ptr,
|
|
(const unsigned char*)name,
|
|
(const unsigned char*)name + strlen(name),
|
|
regs);
|
|
|
|
if (num < 1) {
|
|
rb_raise(rb_eIndexError, "undefined group name reference: %s", name);
|
|
}
|
|
|
|
return num;
|
|
}
|
|
|
|
int
|
|
rb_reg_backref_number(VALUE match, VALUE backref)
|
|
{
|
|
return match_backref_number(match, backref);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch.offset(n) => array
|
|
*
|
|
* Returns a two-element array containing the beginning and ending 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.offset(0) #=> [1, 7]
|
|
* m.offset(4) #=> [6, 7]
|
|
*
|
|
* m = /(?<foo>.)(.)(?<bar>.)/.match("hoge")
|
|
* p m.offset(:foo) #=> [0, 1]
|
|
* p m.offset(:bar) #=> [2, 3]
|
|
*
|
|
*/
|
|
|
|
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);
|
|
if (i < 0 || regs->num_regs <= i)
|
|
rb_raise(rb_eIndexError, "index %d out of matches", i);
|
|
|
|
if (BEG(i) < 0)
|
|
return rb_assoc_new(Qnil, Qnil);
|
|
|
|
update_char_offset(match);
|
|
return rb_assoc_new(INT2FIX(RMATCH(match)->rmatch->char_offset[i].beg),
|
|
INT2FIX(RMATCH(match)->rmatch->char_offset[i].end));
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch.begin(n) => integer
|
|
*
|
|
* Returns the offset of the start of the <em>n</em>th element of the match
|
|
* array in the string.
|
|
* <em>n</em> can be a string or symbol to reference a named capture.
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* m.begin(0) #=> 1
|
|
* m.begin(2) #=> 2
|
|
*
|
|
* m = /(?<foo>.)(.)(?<bar>.)/.match("hoge")
|
|
* p m.begin(:foo) #=> 0
|
|
* p m.begin(:bar) #=> 2
|
|
*/
|
|
|
|
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);
|
|
if (i < 0 || regs->num_regs <= i)
|
|
rb_raise(rb_eIndexError, "index %d out of matches", i);
|
|
|
|
if (BEG(i) < 0)
|
|
return Qnil;
|
|
|
|
update_char_offset(match);
|
|
return INT2FIX(RMATCH(match)->rmatch->char_offset[i].beg);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch.end(n) => integer
|
|
*
|
|
* Returns the offset of the character immediately following the end of the
|
|
* <em>n</em>th element of the match array in the string.
|
|
* <em>n</em> can be a string or symbol to reference a named capture.
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* m.end(0) #=> 7
|
|
* m.end(2) #=> 3
|
|
*
|
|
* m = /(?<foo>.)(.)(?<bar>.)/.match("hoge")
|
|
* p m.end(:foo) #=> 1
|
|
* p m.end(:bar) #=> 3
|
|
*/
|
|
|
|
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);
|
|
if (i < 0 || regs->num_regs <= i)
|
|
rb_raise(rb_eIndexError, "index %d out of matches", i);
|
|
|
|
if (BEG(i) < 0)
|
|
return Qnil;
|
|
|
|
update_char_offset(match);
|
|
return INT2FIX(RMATCH(match)->rmatch->char_offset[i].end);
|
|
}
|
|
|
|
#define MATCH_BUSY FL_USER2
|
|
|
|
void
|
|
rb_match_busy(VALUE match)
|
|
{
|
|
FL_SET(match, MATCH_BUSY);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* rxp.fixed_encoding? => true or false
|
|
*
|
|
* Returns false if rxp is applicable to
|
|
* a string with any ASCII compatible encoding.
|
|
* Returns true otherwise.
|
|
*
|
|
* r = /a/
|
|
* r.fixed_encoding? #=> false
|
|
* r =~ "\u{6666} a" #=> 2
|
|
* r =~ "\xa1\xa2 a".force_encoding("euc-jp") #=> 2
|
|
* r =~ "abc".force_encoding("euc-jp") #=> 0
|
|
*
|
|
* r = /a/u
|
|
* r.fixed_encoding? #=> true
|
|
* r.encoding #=> #<Encoding:UTF-8>
|
|
* r =~ "\u{6666} a" #=> 2
|
|
* r =~ "\xa1\xa2".force_encoding("euc-jp") #=> ArgumentError
|
|
* r =~ "abc".force_encoding("euc-jp") #=> 0
|
|
*
|
|
* r = /\u{6666}/
|
|
* r.fixed_encoding? #=> true
|
|
* r.encoding #=> #<Encoding:UTF-8>
|
|
* r =~ "\u{6666} a" #=> 0
|
|
* r =~ "\xa1\xa2".force_encoding("euc-jp") #=> ArgumentError
|
|
* r =~ "abc".force_encoding("euc-jp") #=> nil
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_fixed_encoding_p(VALUE re)
|
|
{
|
|
if (FL_TEST(re, KCODE_FIXED))
|
|
return Qtrue;
|
|
else
|
|
return Qfalse;
|
|
}
|
|
|
|
static VALUE
|
|
rb_reg_preprocess(const char *p, const char *end, rb_encoding *enc,
|
|
rb_encoding **fixed_enc, onig_errmsg_buffer err);
|
|
|
|
|
|
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 rb_encoding*
|
|
rb_reg_prepare_enc(VALUE re, VALUE str, int warn)
|
|
{
|
|
rb_encoding *enc = 0;
|
|
|
|
if (rb_enc_str_coderange(str) == 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 (!rb_enc_str_asciicompat_p(str)) {
|
|
if (RREGEXP(re)->ptr->enc != enc) {
|
|
reg_enc_error(re, str);
|
|
}
|
|
}
|
|
else if (rb_reg_fixed_encoding_p(re)) {
|
|
if (RREGEXP(re)->ptr->enc != enc &&
|
|
(!rb_enc_asciicompat(RREGEXP(re)->ptr->enc) ||
|
|
rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT)) {
|
|
reg_enc_error(re, str);
|
|
}
|
|
enc = RREGEXP(re)->ptr->enc;
|
|
}
|
|
if (warn && (RBASIC(re)->flags & REG_ENCODING_NONE) &&
|
|
enc != rb_ascii8bit_encoding() &&
|
|
rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) {
|
|
rb_warn("regexp match /.../n against to %s string",
|
|
rb_enc_name(enc));
|
|
}
|
|
return enc;
|
|
}
|
|
|
|
regex_t *
|
|
rb_reg_prepare_re(VALUE re, VALUE str)
|
|
{
|
|
regex_t *reg = RREGEXP(re)->ptr;
|
|
onig_errmsg_buffer err = "";
|
|
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(re)->ptr;
|
|
pattern = RREGEXP_SRC_PTR(re);
|
|
|
|
unescaped = rb_reg_preprocess(
|
|
pattern, pattern + RREGEXP_SRC_LEN(re), enc,
|
|
&fixed_enc, err);
|
|
|
|
if (unescaped == Qnil) {
|
|
rb_raise(rb_eArgError, "regexp preprocess failed: %s", err);
|
|
}
|
|
|
|
r = onig_new(®, (UChar* )RSTRING_PTR(unescaped),
|
|
(UChar* )(RSTRING_PTR(unescaped) + RSTRING_LEN(unescaped)),
|
|
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);
|
|
}
|
|
|
|
RB_GC_GUARD(unescaped);
|
|
return reg;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
long
|
|
rb_reg_search(VALUE re, VALUE str, long pos, int reverse)
|
|
{
|
|
long result;
|
|
VALUE match;
|
|
struct re_registers regi, *regs = ®i;
|
|
char *range = RSTRING_PTR(str);
|
|
regex_t *reg;
|
|
int tmpreg;
|
|
|
|
if (pos > RSTRING_LEN(str) || pos < 0) {
|
|
rb_backref_set(Qnil);
|
|
return -1;
|
|
}
|
|
|
|
reg = rb_reg_prepare_re(re, str);
|
|
tmpreg = reg != RREGEXP(re)->ptr;
|
|
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);
|
|
}
|
|
if (!reverse) {
|
|
range += RSTRING_LEN(str);
|
|
}
|
|
result = onig_search(reg,
|
|
(UChar*)(RSTRING_PTR(str)),
|
|
((UChar*)(RSTRING_PTR(str)) + RSTRING_LEN(str)),
|
|
((UChar*)(RSTRING_PTR(str)) + 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(re)->ptr);
|
|
RREGEXP(re)->ptr = reg;
|
|
}
|
|
}
|
|
if (result < 0) {
|
|
if (regs == ®i)
|
|
onig_region_free(regs, 0);
|
|
if (result == ONIG_MISMATCH) {
|
|
rb_backref_set(Qnil);
|
|
return result;
|
|
}
|
|
else {
|
|
onig_errmsg_buffer err = "";
|
|
onig_error_code_to_str((UChar*)err, (int)result);
|
|
rb_reg_raise(RREGEXP_SRC_PTR(re), RREGEXP_SRC_LEN(re), err, 0);
|
|
}
|
|
}
|
|
|
|
if (NIL_P(match)) {
|
|
match = match_alloc(rb_cMatch);
|
|
onig_region_copy(RMATCH_REGS(match), regs);
|
|
onig_region_free(regs, 0);
|
|
}
|
|
else {
|
|
if (rb_safe_level() >= 3)
|
|
OBJ_TAINT(match);
|
|
else
|
|
FL_UNSET(match, FL_TAINT);
|
|
}
|
|
|
|
RMATCH(match)->str = rb_str_new4(str);
|
|
RMATCH(match)->regexp = re;
|
|
RMATCH(match)->rmatch->char_offset_updated = 0;
|
|
rb_backref_set(match);
|
|
|
|
OBJ_INFECT(match, re);
|
|
OBJ_INFECT(match, str);
|
|
|
|
return result;
|
|
}
|
|
|
|
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;
|
|
}
|
|
if (BEG(nth) == -1) return Qfalse;
|
|
return Qtrue;
|
|
}
|
|
|
|
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);
|
|
OBJ_INFECT(str, match);
|
|
return str;
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_last_match(VALUE match)
|
|
{
|
|
return rb_reg_nth_match(0, match);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch.pre_match => str
|
|
*
|
|
* Returns the portion of the original string before the current match.
|
|
* Equivalent to the special variable <code>$`</code>.
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* m.pre_match #=> "T"
|
|
*/
|
|
|
|
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));
|
|
if (OBJ_TAINTED(match)) OBJ_TAINT(str);
|
|
return str;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch.post_match => str
|
|
*
|
|
* Returns the portion of the original string after the current match.
|
|
* Equivalent to the special variable <code>$'</code>.
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138: The Movie")
|
|
* m.post_match #=> ": The Movie"
|
|
*/
|
|
|
|
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);
|
|
if (OBJ_TAINTED(match)) OBJ_TAINT(str);
|
|
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(void)
|
|
{
|
|
return rb_reg_last_match(rb_backref_get());
|
|
}
|
|
|
|
static VALUE
|
|
prematch_getter(void)
|
|
{
|
|
return rb_reg_match_pre(rb_backref_get());
|
|
}
|
|
|
|
static VALUE
|
|
postmatch_getter(void)
|
|
{
|
|
return rb_reg_match_post(rb_backref_get());
|
|
}
|
|
|
|
static VALUE
|
|
last_paren_match_getter(void)
|
|
{
|
|
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;
|
|
int taint = OBJ_TAINTED(match);
|
|
|
|
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]);
|
|
if (taint) OBJ_TAINT(str);
|
|
rb_ary_push(ary, str);
|
|
}
|
|
}
|
|
return ary;
|
|
}
|
|
|
|
|
|
/* [MG]:FIXME: I put parens around the /.../.match() in the first line of the
|
|
second example to prevent the '*' followed by a '/' from ending the
|
|
comment. */
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch.to_a => anArray
|
|
*
|
|
* Returns the array of matches.
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* m.to_a #=> ["HX1138", "H", "X", "113", "8"]
|
|
*
|
|
* Because <code>to_a</code> is called when expanding
|
|
* <code>*</code><em>variable</em>, there's a useful assignment
|
|
* shortcut for extracting matched fields. This is slightly slower than
|
|
* accessing the fields directly (as an intermediate array is
|
|
* generated).
|
|
*
|
|
* all,f1,f2,f3 = *(/(.)(.)(\d+)(\d)/.match("THX1138."))
|
|
* all #=> "HX1138"
|
|
* f1 #=> "H"
|
|
* f2 #=> "X"
|
|
* f3 #=> "113"
|
|
*/
|
|
|
|
static VALUE
|
|
match_to_a(VALUE match)
|
|
{
|
|
return match_array(match, 0);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch.captures => array
|
|
*
|
|
* Returns the array of captures; equivalent to <code>mtch.to_a[1..-1]</code>.
|
|
*
|
|
* f1,f2,f3,f4 = /(.)(.)(\d+)(\d)/.match("THX1138.").captures
|
|
* f1 #=> "H"
|
|
* f2 #=> "X"
|
|
* f3 #=> "113"
|
|
* f4 #=> "8"
|
|
*/
|
|
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)
|
|
{
|
|
int num;
|
|
|
|
num = onig_name_to_backref_number(RREGEXP(regexp)->ptr,
|
|
(const unsigned char* )name, (const unsigned char* )name_end, regs);
|
|
if (num >= 1) {
|
|
return num;
|
|
}
|
|
else {
|
|
VALUE s = rb_str_new(name, (long )(name_end - name));
|
|
rb_raise(rb_eIndexError, "undefined group name reference: %s",
|
|
StringValuePtr(s));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch[i] => str or nil
|
|
* mtch[start, length] => array
|
|
* mtch[range] => array
|
|
* mtch[name] => str or nil
|
|
*
|
|
* Match Reference---<code>MatchData</code> acts as an array, and may be
|
|
* accessed using the normal array indexing techniques. <i>mtch</i>[0] is
|
|
* equivalent to the special variable <code>$&</code>, and returns the entire
|
|
* matched string. <i>mtch</i>[1], <i>mtch</i>[2], and so on return the values
|
|
* of the matched backreferences (portions of the pattern between parentheses).
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* m #=> #<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"]
|
|
*
|
|
* m = /(?<foo>a+)b/.match("ccaaab")
|
|
* m #=> #<MatchData "aaab" foo:"aaa">
|
|
* m["foo"] #=> "aaa"
|
|
* m[:foo] #=> "aaa"
|
|
*/
|
|
|
|
static VALUE
|
|
match_aref(int argc, VALUE *argv, VALUE match)
|
|
{
|
|
VALUE idx, rest;
|
|
|
|
match_check(match);
|
|
rb_scan_args(argc, argv, "11", &idx, &rest);
|
|
|
|
if (NIL_P(rest)) {
|
|
if (FIXNUM_P(idx)) {
|
|
if (FIX2INT(idx) >= 0) {
|
|
return rb_reg_nth_match(FIX2INT(idx), match);
|
|
}
|
|
}
|
|
else {
|
|
const char *p;
|
|
int num;
|
|
|
|
switch (TYPE(idx)) {
|
|
case T_SYMBOL:
|
|
p = rb_id2name(SYM2ID(idx));
|
|
goto name_to_backref;
|
|
break;
|
|
case T_STRING:
|
|
p = StringValuePtr(idx);
|
|
|
|
name_to_backref:
|
|
num = name_to_backref_number(RMATCH_REGS(match),
|
|
RMATCH(match)->regexp, p, p + strlen(p));
|
|
return rb_reg_nth_match(num, match);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return rb_ary_aref(argc, argv, match_to_a(match));
|
|
}
|
|
|
|
static VALUE
|
|
match_entry(VALUE match, long n)
|
|
{
|
|
/* n should not exceed num_regs */
|
|
return rb_reg_nth_match((int)n, match);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
*
|
|
* mtch.values_at([index]*) => array
|
|
*
|
|
* Uses each <i>index</i> to access the matching values, returning an array of
|
|
* the corresponding matches.
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138: The Movie")
|
|
* m.to_a #=> ["HX1138", "H", "X", "113", "8"]
|
|
* m.values_at(0, 2, -2) #=> ["HX1138", "X", "113"]
|
|
*/
|
|
|
|
static VALUE
|
|
match_values_at(int argc, VALUE *argv, VALUE match)
|
|
{
|
|
struct re_registers *regs;
|
|
|
|
match_check(match);
|
|
regs = RMATCH_REGS(match);
|
|
return rb_get_values_at(match, regs->num_regs, argc, argv, match_entry);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch.to_s => str
|
|
*
|
|
* Returns the entire matched string.
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* m.to_s #=> "HX1138"
|
|
*/
|
|
|
|
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);
|
|
if (OBJ_TAINTED(match)) OBJ_TAINT(str);
|
|
if (OBJ_TAINTED(RMATCH(match)->str)) OBJ_TAINT(str);
|
|
return str;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch.string => str
|
|
*
|
|
* Returns a frozen copy of the string passed in to <code>match</code>.
|
|
*
|
|
* m = /(.)(.)(\d+)(\d)/.match("THX1138.")
|
|
* 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:
|
|
* mtch.inspect => str
|
|
*
|
|
* Returns a printable version of <i>mtch</i>.
|
|
*
|
|
* puts /.$/.match("foo").inspect
|
|
* #=> #<MatchData "o">
|
|
*
|
|
* puts /(.)(.)(.)/.match("foo").inspect
|
|
* #=> #<MatchData "foo" 1:"f" 2:"o" 3:"o">
|
|
*
|
|
* puts /(.)(.)?(.)/.match("fo").inspect
|
|
* #=> #<MatchData "fo" 1:"f" 2:nil 3:"o">
|
|
*
|
|
* puts /(?<foo>.)(?<bar>.)(?<baz>.)/.match("hoge").inspect
|
|
* #=> #<MatchData "hog" foo:"h" bar:"o" baz:"g">
|
|
*
|
|
*/
|
|
|
|
static VALUE
|
|
match_inspect(VALUE match)
|
|
{
|
|
const char *cname = rb_obj_classname(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("#<%s:%p>", cname, (void*)match);
|
|
}
|
|
|
|
names = ALLOCA_N(struct backref_name_tag, num_regs);
|
|
MEMZERO(names, struct backref_name_tag, num_regs);
|
|
|
|
onig_foreach_name(RREGEXP(regexp)->ptr,
|
|
match_inspect_name_iter, names);
|
|
|
|
str = rb_str_buf_new2("#<");
|
|
rb_str_buf_cat2(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 (v == Qnil)
|
|
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;
|
|
int retbyte;
|
|
|
|
retbyte = -1;
|
|
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);
|
|
char *chbuf = ALLOCA_N(char, chmaxlen);
|
|
int chlen = 0;
|
|
int byte;
|
|
int l;
|
|
|
|
memset(chbuf, 0, chmaxlen);
|
|
|
|
byte = read_escaped_byte(&p, end, err);
|
|
if (byte == -1) {
|
|
return -1;
|
|
}
|
|
|
|
chbuf[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;
|
|
}
|
|
chbuf[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 || (chbuf[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", chbuf[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)
|
|
{
|
|
char c;
|
|
char smallbuf[2];
|
|
|
|
while (p < end) {
|
|
int chlen = rb_enc_precise_mbclen(p, end, enc);
|
|
if (!MBCLEN_CHARFOUND_P(chlen)) {
|
|
errcpy(err, "invalid multibyte character");
|
|
return -1;
|
|
}
|
|
chlen = MBCLEN_CHARFOUND_LEN(chlen);
|
|
if (1 < chlen || (*p & 0x80)) {
|
|
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;
|
|
}
|
|
switch (c = *p++) {
|
|
case '1': case '2': case '3':
|
|
case '4': case '5': case '6': case '7': /* \O, \OO, \OOO or backref */
|
|
{
|
|
size_t octlen;
|
|
if (ruby_scan_oct(p-1, end-(p-1), &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 (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} */
|
|
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;
|
|
|
|
default:
|
|
rb_str_buf_cat(buf, &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)
|
|
{
|
|
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) != 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);
|
|
RB_GC_GUARD(str);
|
|
|
|
if (buf == Qnil) {
|
|
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_PTR(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 (rb_enc_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);
|
|
|
|
if (buf == Qnil)
|
|
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();
|
|
|
|
if (!OBJ_UNTRUSTED(obj) && rb_safe_level() >= 4)
|
|
rb_raise(rb_eSecurityError, "Insecure: can't modify regexp");
|
|
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);
|
|
if (unescaped == Qnil)
|
|
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;
|
|
re->src = rb_enc_str_new(s, len, enc);
|
|
OBJ_FREEZE(re->src);
|
|
RB_GC_GUARD(unescaped);
|
|
return 0;
|
|
}
|
|
|
|
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 *enc = rb_enc_get(str);
|
|
if (options & ARG_ENCODING_NONE) {
|
|
rb_encoding *ascii8bit = rb_ascii8bit_encoding();
|
|
if (enc != ascii8bit) {
|
|
if (rb_enc_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);
|
|
RB_GC_GUARD(str);
|
|
return ret;
|
|
}
|
|
|
|
static VALUE
|
|
rb_reg_s_alloc(VALUE klass)
|
|
{
|
|
NEWOBJ(re, struct RRegexp);
|
|
OBJSETUP(re, klass, T_REGEXP);
|
|
|
|
re->ptr = 0;
|
|
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;
|
|
}
|
|
|
|
VALUE
|
|
rb_reg_new_ary(VALUE ary, int opt)
|
|
{
|
|
return rb_reg_new_str(rb_reg_preprocess_dregexp(ary, opt), opt);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
return re;
|
|
}
|
|
|
|
static VALUE reg_cache;
|
|
|
|
VALUE
|
|
rb_reg_regcomp(VALUE str)
|
|
{
|
|
volatile VALUE save_str = 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(save_str, 0);
|
|
}
|
|
|
|
static st_index_t reg_hash(VALUE re);
|
|
/*
|
|
* call-seq:
|
|
* rxp.hash => fixnum
|
|
*
|
|
* Produce a hash based on the text and options of this regular expression.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_hash(VALUE re)
|
|
{
|
|
st_index_t hashval = reg_hash(re);
|
|
return LONG2FIX(hashval);
|
|
}
|
|
|
|
static st_index_t
|
|
reg_hash(VALUE re)
|
|
{
|
|
st_index_t hashval;
|
|
|
|
rb_reg_check(re);
|
|
hashval = RREGEXP(re)->ptr->options;
|
|
hashval = rb_hash_uint(hashval, rb_memhash(RREGEXP_SRC_PTR(re), RREGEXP_SRC_LEN(re)));
|
|
return rb_hash_end(hashval);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* rxp == other_rxp => true or false
|
|
* rxp.eql?(other_rxp) => true or false
|
|
*
|
|
* Equality---Two regexps are equal if their patterns are identical, they have
|
|
* the same character set code, and their <code>casefold?</code> values are the
|
|
* same.
|
|
*
|
|
* /abc/ == /abc/x #=> false
|
|
* /abc/ == /abc/i #=> false
|
|
* /abc/ == /abc/n #=> false
|
|
* /abc/u == /abc/n #=> false
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_equal(VALUE re1, VALUE re2)
|
|
{
|
|
if (re1 == re2) return Qtrue;
|
|
if (TYPE(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(re1)->ptr->options != RREGEXP(re2)->ptr->options) return Qfalse;
|
|
if (RREGEXP_SRC_LEN(re1) != RREGEXP_SRC_LEN(re2)) return Qfalse;
|
|
if (ENCODING_GET(re1) != ENCODING_GET(re2)) return Qfalse;
|
|
if (memcmp(RREGEXP_SRC_PTR(re1), RREGEXP_SRC_PTR(re2), RREGEXP_SRC_LEN(re1)) == 0) {
|
|
return Qtrue;
|
|
}
|
|
return Qfalse;
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch.hash => integer
|
|
*
|
|
* Produce a hash based on the target string, regexp and matched
|
|
* positions of this matchdata.
|
|
*/
|
|
|
|
static VALUE
|
|
match_hash(VALUE match)
|
|
{
|
|
const struct re_registers *regs;
|
|
st_index_t hashval = rb_hash_start(rb_str_hash(RMATCH(match)->str));
|
|
|
|
rb_hash_uint(hashval, reg_hash(RMATCH(match)->regexp));
|
|
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 LONG2FIX(hashval);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* mtch == mtch2 => true or false
|
|
*
|
|
* Equality---Two matchdata are equal if their target strings,
|
|
* patterns, and matched positions are identical.
|
|
*/
|
|
|
|
static VALUE
|
|
match_equal(VALUE match1, VALUE match2)
|
|
{
|
|
const struct re_registers *regs1, *regs2;
|
|
if (match1 == match2) return Qtrue;
|
|
if (TYPE(match2) != T_MATCH) return Qfalse;
|
|
if (!rb_str_equal(RMATCH(match1)->str, RMATCH(match2)->str)) return Qfalse;
|
|
if (!rb_reg_equal(RMATCH(match1)->regexp, RMATCH(match2)->regexp)) 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_sym_to_s(s);
|
|
}
|
|
else {
|
|
VALUE tmp = rb_check_string_type(s);
|
|
if (check && NIL_P(tmp)) {
|
|
rb_raise(rb_eTypeError, "can't convert %s to String",
|
|
rb_obj_classname(s));
|
|
}
|
|
return tmp;
|
|
}
|
|
}
|
|
|
|
static long
|
|
reg_match_pos(VALUE re, VALUE *strp, long pos)
|
|
{
|
|
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(re, str, pos, 0);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* rxp =~ str => integer or nil
|
|
*
|
|
* Match---Matches <i>rxp</i> against <i>str</i>.
|
|
*
|
|
* /at/ =~ "input data" #=> 7
|
|
* /ax/ =~ "input data" #=> nil
|
|
*
|
|
* If <code>=~</code> is used with a regexp literal with named captures,
|
|
* captured strings (or nil) is assigned to local variables named by
|
|
* the capture names.
|
|
*
|
|
* /(?<lhs>\w+)\s*=\s*(?<rhs>\w+)/ =~ " x = y "
|
|
* p lhs #=> "x"
|
|
* p rhs #=> "y"
|
|
*
|
|
* If it is not matched, nil is assigned for the variables.
|
|
*
|
|
* /(?<lhs>\w+)\s*=\s*(?<rhs>\w+)/ =~ " x = "
|
|
* p lhs #=> nil
|
|
* p rhs #=> nil
|
|
*
|
|
* This assignment is implemented in the Ruby parser.
|
|
* The parser detects 'regexp-literal =~ expression' for the assignment.
|
|
* The regexp must be a literal without interpolation and placed at left hand side.
|
|
*
|
|
* The assignment is not occur if the regexp is not a literal.
|
|
*
|
|
* re = /(?<lhs>\w+)\s*=\s*(?<rhs>\w+)/
|
|
* re =~ " x = y "
|
|
* p lhs # undefined local variable
|
|
* p rhs # undefined local variable
|
|
*
|
|
* A regexp interpolation, <code>#{}</code>, also disables
|
|
* the assignment.
|
|
*
|
|
* rhs_pat = /(?<rhs>\w+)/
|
|
* /(?<lhs>\w+)\s*=\s*#{rhs_pat}/ =~ "x = y"
|
|
* p lhs # undefined local variable
|
|
*
|
|
* The assignment is not occur if the regexp is placed at right hand side.
|
|
*
|
|
* " x = y " =~ /(?<lhs>\w+)\s*=\s*(?<rhs>\w+)/
|
|
* p lhs, rhs # undefined local variable
|
|
*
|
|
*/
|
|
|
|
VALUE
|
|
rb_reg_match(VALUE re, VALUE str)
|
|
{
|
|
long pos = reg_match_pos(re, &str, 0);
|
|
if (pos < 0) return Qnil;
|
|
pos = rb_str_sublen(str, pos);
|
|
return LONG2FIX(pos);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* rxp === str => true or false
|
|
*
|
|
* Case Equality---Synonym for <code>Regexp#=~</code> used in case statements.
|
|
*
|
|
* a = "HELLO"
|
|
* case a
|
|
* when /^[a-z]*$/; print "Lower case\n"
|
|
* when /^[A-Z]*$/; print "Upper case\n"
|
|
* else; print "Mixed case\n"
|
|
* end
|
|
*
|
|
* <em>produces:</em>
|
|
*
|
|
* Upper case
|
|
*/
|
|
|
|
VALUE
|
|
rb_reg_eqq(VALUE re, VALUE str)
|
|
{
|
|
long start;
|
|
|
|
str = reg_operand(str, FALSE);
|
|
if (NIL_P(str)) {
|
|
rb_backref_set(Qnil);
|
|
return Qfalse;
|
|
}
|
|
start = rb_reg_search(re, str, 0, 0);
|
|
if (start < 0) {
|
|
return Qfalse;
|
|
}
|
|
return Qtrue;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* ~ rxp => integer or nil
|
|
*
|
|
* Match---Matches <i>rxp</i> against the contents of <code>$_</code>.
|
|
* Equivalent to <code><i>rxp</i> =~ $_</code>.
|
|
*
|
|
* $_ = "input data"
|
|
* ~ /at/ #=> 7
|
|
*/
|
|
|
|
VALUE
|
|
rb_reg_match2(VALUE re)
|
|
{
|
|
long start;
|
|
VALUE line = rb_lastline_get();
|
|
|
|
if (TYPE(line) != T_STRING) {
|
|
rb_backref_set(Qnil);
|
|
return Qnil;
|
|
}
|
|
|
|
start = rb_reg_search(re, line, 0, 0);
|
|
if (start < 0) {
|
|
return Qnil;
|
|
}
|
|
start = rb_str_sublen(line, start);
|
|
return LONG2FIX(start);
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* rxp.match(str) => matchdata or nil
|
|
* rxp.match(str,pos) => matchdata or nil
|
|
*
|
|
* Returns a <code>MatchData</code> object describing the match, or
|
|
* <code>nil</code> if there was no match. This is equivalent to retrieving the
|
|
* value of the special variable <code>$~</code> following a normal match.
|
|
* If the second parameter is present, it specifies the position in the string
|
|
* to begin the search.
|
|
*
|
|
* /(.)(.)(.)/.match("abc")[2] #=> "b"
|
|
* /(.)(.)/.match("abc", 1)[2] #=> "c"
|
|
*
|
|
* If a block is given, invoke the block with MatchData if match succeed, so
|
|
* that you can write
|
|
*
|
|
* pat.match(str) {|m| ...}
|
|
*
|
|
* instead of
|
|
*
|
|
* if m = pat.match(str)
|
|
* ...
|
|
* end
|
|
*
|
|
* The return value is a value from block execution in this case.
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_match_m(int argc, VALUE *argv, VALUE re)
|
|
{
|
|
VALUE result, 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);
|
|
if (pos < 0) {
|
|
rb_backref_set(Qnil);
|
|
return Qnil;
|
|
}
|
|
result = rb_backref_get();
|
|
rb_match_busy(result);
|
|
if (!NIL_P(result) && rb_block_given_p()) {
|
|
return rb_yield(result);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Document-method: compile
|
|
*
|
|
* Synonym for <code>Regexp.new</code>
|
|
*/
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Regexp.new(string [, options]) => regexp
|
|
* Regexp.new(regexp) => regexp
|
|
* Regexp.compile(string [, options]) => regexp
|
|
* Regexp.compile(regexp) => regexp
|
|
*
|
|
* Constructs a new regular expression from <i>pattern</i>, which can be either
|
|
* a <code>String</code> or a <code>Regexp</code> (in which case that regexp's
|
|
* options are propagated, and new options may not be specified (a change as of
|
|
* Ruby 1.8). If <i>options</i> is a <code>Fixnum</code>, it should be one or
|
|
* more of the constants <code>Regexp::EXTENDED</code>,
|
|
* <code>Regexp::IGNORECASE</code>, and <code>Regexp::MULTILINE</code>,
|
|
* <em>or</em>-ed together. Otherwise, if <i>options</i> is not
|
|
* <code>nil</code>, the regexp will be case insensitive.
|
|
*
|
|
* r1 = Regexp.new('^a-z+:\\s+\w+') #=> /^a-z+:\s+\w+/
|
|
* r2 = Regexp.new('cat', true) #=> /cat/i
|
|
* r3 = Regexp.new('dog', Regexp::EXTENDED) #=> /dog/x
|
|
* r4 = Regexp.new(r2) #=> /cat/i
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_initialize_m(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
onig_errmsg_buffer err = "";
|
|
int flags = 0;
|
|
VALUE str;
|
|
rb_encoding *enc;
|
|
const char *ptr;
|
|
long len;
|
|
|
|
if (argc == 0 || argc > 3) {
|
|
rb_raise(rb_eArgError, "wrong number of arguments");
|
|
}
|
|
if (TYPE(argv[0]) == T_REGEXP) {
|
|
VALUE re = argv[0];
|
|
|
|
if (argc > 1) {
|
|
rb_warn("flags ignored");
|
|
}
|
|
rb_reg_check(re);
|
|
flags = rb_reg_options(re);
|
|
ptr = RREGEXP_SRC_PTR(re);
|
|
len = RREGEXP_SRC_LEN(re);
|
|
enc = rb_enc_get(re);
|
|
if (rb_reg_initialize(self, ptr, len, enc, flags, err, NULL, 0)) {
|
|
str = rb_enc_str_new(ptr, len, enc);
|
|
rb_reg_raise_str(str, flags, err);
|
|
}
|
|
}
|
|
else {
|
|
if (argc >= 2) {
|
|
if (FIXNUM_P(argv[1])) flags = FIX2INT(argv[1]);
|
|
else if (RTEST(argv[1])) flags = ONIG_OPTION_IGNORECASE;
|
|
}
|
|
enc = 0;
|
|
if (argc == 3 && !NIL_P(argv[2])) {
|
|
char *kcode = StringValuePtr(argv[2]);
|
|
if (kcode[0] == 'n' || kcode[1] == 'N') {
|
|
enc = rb_ascii8bit_encoding();
|
|
flags |= ARG_ENCODING_NONE;
|
|
}
|
|
else {
|
|
rb_warn("encoding option is ignored - %s", kcode);
|
|
}
|
|
}
|
|
str = argv[0];
|
|
ptr = StringValuePtr(str);
|
|
if (enc
|
|
? rb_reg_initialize(self, ptr, RSTRING_LEN(str), enc, flags, err, NULL, 0)
|
|
: rb_reg_initialize_str(self, str, flags, err, NULL, 0)) {
|
|
rb_reg_raise_str(str, flags, err);
|
|
}
|
|
}
|
|
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 '$':
|
|
case ' ': case '#':
|
|
case '\t': case '\f': case '\v': case '\n': case '\r':
|
|
goto meta_found;
|
|
}
|
|
s += clen;
|
|
}
|
|
tmp = rb_str_new3(str);
|
|
if (ascii_only) {
|
|
rb_enc_associate(tmp, rb_usascii_encoding());
|
|
}
|
|
return tmp;
|
|
|
|
meta_found:
|
|
tmp = rb_str_new(0, RSTRING_LEN(str)*2);
|
|
if (ascii_only) {
|
|
rb_enc_associate(tmp, rb_usascii_encoding());
|
|
}
|
|
else {
|
|
rb_enc_copy(tmp, str);
|
|
}
|
|
t = RSTRING_PTR(tmp);
|
|
/* copy upto metacharacter */
|
|
memcpy(t, RSTRING_PTR(str), s - RSTRING_PTR(str));
|
|
t += s - RSTRING_PTR(str);
|
|
|
|
while (s < send) {
|
|
c = rb_enc_ascget(s, send, &clen, enc);
|
|
if (c == -1) {
|
|
int n = mbclen(s, send, enc);
|
|
|
|
while (n--)
|
|
*t++ = *s++;
|
|
continue;
|
|
}
|
|
s += clen;
|
|
switch (c) {
|
|
case '[': case ']': case '{': case '}':
|
|
case '(': case ')': case '|': case '-':
|
|
case '*': case '.': case '\\':
|
|
case '?': case '+': case '^': case '$':
|
|
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));
|
|
OBJ_INFECT(tmp, str);
|
|
return tmp;
|
|
}
|
|
|
|
|
|
/*
|
|
* call-seq:
|
|
* Regexp.escape(str) => string
|
|
* Regexp.quote(str) => string
|
|
*
|
|
* Escapes any characters that would have special meaning in a regular
|
|
* expression. Returns a new escaped string, or self if no characters are
|
|
* escaped. For any string,
|
|
* <code>Regexp.new(Regexp.escape(<i>str</i>))=~<i>str</i></code> will be true.
|
|
*
|
|
* 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(re)->ptr->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;
|
|
}
|
|
|
|
VALUE
|
|
rb_check_regexp_type(VALUE re)
|
|
{
|
|
return rb_check_convert_type(re, T_REGEXP, "Regexp", "to_regexp");
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Regexp.try_convert(obj) -> re or nil
|
|
*
|
|
* Try to convert <i>obj</i> into a Regexp, using to_regexp method.
|
|
* Returns converted regexp or nil if <i>obj</i> cannot be converted
|
|
* for any reason.
|
|
*
|
|
* Regexp.try_convert(/re/) #=> /re/
|
|
* Regexp.try_convert("re") #=> nil
|
|
*
|
|
* o = Object.new
|
|
* Regexp.try_convert(o) #=> nil
|
|
* def o.to_regexp() /foo/ end
|
|
* Regexp.try_convert(o) #=> /foo/
|
|
*
|
|
*/
|
|
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_to_s(v);
|
|
}
|
|
else {
|
|
rb_encoding *enc;
|
|
StringValue(e);
|
|
enc = rb_enc_get(e);
|
|
if (!rb_enc_str_asciicompat_p(e)) {
|
|
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(pat1, pat2, ...) => new_regexp
|
|
* Regexp.union(pats_ary) => new_regexp
|
|
*
|
|
* Return a <code>Regexp</code> object that is the union of the given
|
|
* <em>pattern</em>s, i.e., will match any of its parts. The <em>pattern</em>s
|
|
* can be Regexp objects, in which case their options will be preserved, or
|
|
* Strings. If no patterns are given, returns <code>/(?!)/</code>.
|
|
*
|
|
* Regexp.union #=> /(?!)/
|
|
* Regexp.union("penzance") #=> /penzance/
|
|
* Regexp.union("a+b*c") #=> /a\+b\*c/
|
|
* Regexp.union("skiing", "sledding") #=> /skiing|sledding/
|
|
* Regexp.union(["skiing", "sledding"]) #=> /skiing|sledding/
|
|
* Regexp.union(/dogs/, /cats/i) #=> /(?-mix:dogs)|(?i-mx:cats)/
|
|
*/
|
|
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)
|
|
{
|
|
onig_errmsg_buffer err = "";
|
|
const char *s;
|
|
long len;
|
|
|
|
if (copy == re) return copy;
|
|
rb_check_frozen(copy);
|
|
/* need better argument type check */
|
|
if (!rb_obj_is_instance_of(re, rb_obj_class(copy))) {
|
|
rb_raise(rb_eTypeError, "wrong argument type");
|
|
}
|
|
rb_reg_check(re);
|
|
s = RREGEXP_SRC_PTR(re);
|
|
len = RREGEXP_SRC_LEN(re);
|
|
if (rb_reg_initialize(copy, s, len, rb_enc_get(re), rb_reg_options(re),
|
|
err, NULL, 0) != 0) {
|
|
rb_reg_raise(s, len, err, re);
|
|
}
|
|
return copy;
|
|
}
|
|
|
|
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);
|
|
#define ASCGET(s,e,cl) (acompat ? (*cl=1,ISASCII(s[0])?s[0]:-1) : rb_enc_ascget(s, e, cl, str_enc))
|
|
|
|
p = s = RSTRING_PTR(str);
|
|
e = s + RSTRING_LEN(str);
|
|
|
|
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 (onig_noname_group_capture_is_active(RREGEXP(regexp)->ptr)) {
|
|
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) {
|
|
no = name_to_backref_number(regs, regexp, name, name_end);
|
|
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
|
|
kcode_getter(void)
|
|
{
|
|
rb_warn("variable $KCODE is no longer effective");
|
|
return Qnil;
|
|
}
|
|
|
|
static void
|
|
kcode_setter(VALUE val, ID id)
|
|
{
|
|
rb_warn("variable $KCODE is no longer effective; ignored");
|
|
}
|
|
|
|
static VALUE
|
|
ignorecase_getter(void)
|
|
{
|
|
rb_warn("variable $= is no longer effective");
|
|
return Qfalse;
|
|
}
|
|
|
|
static void
|
|
ignorecase_setter(VALUE val, ID id)
|
|
{
|
|
rb_warn("variable $= is no longer effective; ignored");
|
|
}
|
|
|
|
static VALUE
|
|
match_getter(void)
|
|
{
|
|
VALUE match = rb_backref_get();
|
|
|
|
if (NIL_P(match)) return Qnil;
|
|
rb_match_busy(match);
|
|
return match;
|
|
}
|
|
|
|
static void
|
|
match_setter(VALUE val)
|
|
{
|
|
if (!NIL_P(val)) {
|
|
Check_Type(val, T_MATCH);
|
|
}
|
|
rb_backref_set(val);
|
|
}
|
|
|
|
/*
|
|
* call-seq:
|
|
* Regexp.last_match => matchdata
|
|
* Regexp.last_match(n) => str
|
|
*
|
|
* The first form returns the <code>MatchData</code> object generated by the
|
|
* last successful pattern match. Equivalent to reading the global variable
|
|
* <code>$~</code>. The second form returns the <i>n</i>th field in this
|
|
* <code>MatchData</code> object.
|
|
* <em>n</em> can be a string or symbol to reference a named capture.
|
|
*
|
|
* Note that the <code>last_match</code> is local to the thread and method scope
|
|
* of the method that did the pattern match.
|
|
*
|
|
* /c(.)t/ =~ 'cat' #=> 0
|
|
* Regexp.last_match #=> #<MatchData "cat" 1:"a">
|
|
* Regexp.last_match(0) #=> "cat"
|
|
* Regexp.last_match(1) #=> "a"
|
|
* Regexp.last_match(2) #=> nil
|
|
*
|
|
* /(?<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"
|
|
*/
|
|
|
|
static VALUE
|
|
rb_reg_s_last_match(int argc, VALUE *argv)
|
|
{
|
|
VALUE nth;
|
|
|
|
if (argc > 0 && rb_scan_args(argc, argv, "01", &nth) == 1) {
|
|
VALUE match = rb_backref_get();
|
|
int n;
|
|
if (NIL_P(match)) return Qnil;
|
|
n = match_backref_number(match, nth);
|
|
return rb_reg_nth_match(n, match);
|
|
}
|
|
return match_getter();
|
|
}
|
|
|
|
static void
|
|
re_warn(const char *s)
|
|
{
|
|
rb_warn("%s", s);
|
|
}
|
|
|
|
/*
|
|
* Document-class: Regexp
|
|
*
|
|
* A <code>Regexp</code> holds a regular expression, used to match a pattern
|
|
* against strings. Regexps are created using the <code>/.../</code> and
|
|
* <code>%r{...}</code> literals, and by the <code>Regexp::new</code>
|
|
* constructor.
|
|
*
|
|
* A comprehensive reference for regexp syntax and usage is available as
|
|
* +Doc::Regexp+.
|
|
*
|
|
*/
|
|
|
|
void
|
|
Init_Regexp(void)
|
|
{
|
|
rb_eRegexpError = rb_define_class("RegexpError", rb_eStandardError);
|
|
|
|
onigenc_set_default_caseconv_table((UChar*)casetable);
|
|
onigenc_set_default_encoding(ONIG_ENCODING_ASCII);
|
|
onig_set_warn_func(re_warn);
|
|
onig_set_verb_warn_func(re_warn);
|
|
|
|
rb_define_virtual_variable("$~", match_getter, match_setter);
|
|
rb_define_virtual_variable("$&", last_match_getter, 0);
|
|
rb_define_virtual_variable("$`", prematch_getter, 0);
|
|
rb_define_virtual_variable("$'", postmatch_getter, 0);
|
|
rb_define_virtual_variable("$+", last_paren_match_getter, 0);
|
|
|
|
rb_define_virtual_variable("$=", ignorecase_getter, ignorecase_setter);
|
|
rb_define_virtual_variable("$KCODE", kcode_getter, kcode_setter);
|
|
rb_define_virtual_variable("$-K", kcode_getter, kcode_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, "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_const(rb_cRegexp, "IGNORECASE", INT2FIX(ONIG_OPTION_IGNORECASE));
|
|
rb_define_const(rb_cRegexp, "EXTENDED", INT2FIX(ONIG_OPTION_EXTEND));
|
|
rb_define_const(rb_cRegexp, "MULTILINE", INT2FIX(ONIG_OPTION_MULTILINE));
|
|
rb_define_const(rb_cRegexp, "FIXEDENCODING", INT2FIX(ARG_ENCODING_FIXED));
|
|
|
|
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_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, "begin", match_begin, 1);
|
|
rb_define_method(rb_cMatch, "end", match_end, 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, "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);
|
|
}
|