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ruby--ruby/ruby.c
Nobuyoshi Nakada 996af2ce08 Disable deprecation warning by the default [Feature #16345] 
And `-w` option turns it on.
2020-09-25 09:50:33 +09:00

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/**********************************************************************
ruby.c -
$Author$
created at: Tue Aug 10 12:47:31 JST 1993
Copyright (C) 1993-2007 Yukihiro Matsumoto
Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
Copyright (C) 2000 Information-technology Promotion Agency, Japan
**********************************************************************/
#include "ruby/internal/config.h"
#include <ctype.h>
#include <stdio.h>
#include <sys/types.h>
#ifdef __CYGWIN__
# include <windows.h>
# include <sys/cygwin.h>
#endif
#ifdef __hpux
# include <sys/pstat.h>
#endif
#if defined(LOAD_RELATIVE) && defined(HAVE_DLADDR)
# include <dlfcn.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#if defined(HAVE_FCNTL_H)
# include <fcntl.h>
#elif defined(HAVE_SYS_FCNTL_H)
# include <sys/fcntl.h>
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#include "dln.h"
#include "eval_intern.h"
#include "internal.h"
#include "internal/error.h"
#include "internal/file.h"
#include "internal/inits.h"
#include "internal/io.h"
#include "internal/load.h"
#include "internal/loadpath.h"
#include "internal/missing.h"
#include "internal/object.h"
#include "internal/parse.h"
#include "internal/process.h"
#include "internal/variable.h"
#include "mjit.h"
#include "ruby/encoding.h"
#include "ruby/thread.h"
#include "ruby/util.h"
#include "ruby/version.h"
#ifndef MAXPATHLEN
# define MAXPATHLEN 1024
#endif
#ifndef O_ACCMODE
# define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR)
#endif
void Init_ruby_description(void);
#ifndef HAVE_STDLIB_H
char *getenv();
#endif
#ifndef DISABLE_RUBYGEMS
# define DISABLE_RUBYGEMS 0
#endif
#if DISABLE_RUBYGEMS
#define DEFAULT_RUBYGEMS_ENABLED "disabled"
#else
#define DEFAULT_RUBYGEMS_ENABLED "enabled"
#endif
void rb_warning_category_update(unsigned int mask, unsigned int bits);
#define COMMA ,
#define FEATURE_BIT(bit) (1U << feature_##bit)
#define EACH_FEATURES(X, SEP) \
X(gems) \
SEP \
X(did_you_mean) \
SEP \
X(rubyopt) \
SEP \
X(frozen_string_literal) \
SEP \
X(jit) \
/* END OF FEATURES */
#define EACH_DEBUG_FEATURES(X, SEP) \
X(frozen_string_literal) \
/* END OF DEBUG FEATURES */
#define AMBIGUOUS_FEATURE_NAMES 0 /* no ambiguous feature names now */
#define DEFINE_FEATURE(bit) feature_##bit
#define DEFINE_DEBUG_FEATURE(bit) feature_debug_##bit
enum feature_flag_bits {
EACH_FEATURES(DEFINE_FEATURE, COMMA),
feature_debug_flag_first,
feature_debug_flag_begin = feature_debug_flag_first - 1,
EACH_DEBUG_FEATURES(DEFINE_DEBUG_FEATURE, COMMA),
feature_flag_count
};
#define DEBUG_BIT(bit) (1U << feature_debug_##bit)
#define DUMP_BIT(bit) (1U << dump_##bit)
#define DEFINE_DUMP(bit) dump_##bit
#define EACH_DUMPS(X, SEP) \
X(version) \
SEP \
X(copyright) \
SEP \
X(usage) \
SEP \
X(help) \
SEP \
X(yydebug) \
SEP \
X(syntax) \
SEP \
X(parsetree) \
SEP \
X(parsetree_with_comment) \
SEP \
X(insns) \
/* END OF DUMPS */
enum dump_flag_bits {
dump_version_v,
EACH_DUMPS(DEFINE_DUMP, COMMA),
dump_exit_bits = (DUMP_BIT(yydebug) | DUMP_BIT(syntax) |
DUMP_BIT(parsetree) | DUMP_BIT(parsetree_with_comment) |
DUMP_BIT(insns))
};
typedef struct ruby_cmdline_options ruby_cmdline_options_t;
typedef struct {
unsigned int mask;
unsigned int set;
} ruby_features_t;
static inline void
rb_feature_set_to(ruby_features_t *feat, unsigned int bit_mask, unsigned int bit_set)
{
feat->mask |= bit_mask;
feat->set = (feat->set & ~bit_mask) | bit_set;
}
#define FEATURE_SET_TO(feat, bit_mask, bit_set) \
rb_feature_set_to(&(feat), bit_mask, bit_set)
#define FEATURE_SET(feat, bits) FEATURE_SET_TO(feat, bits, bits)
#define FEATURE_SET_RESTORE(feat, save) FEATURE_SET_TO(feat, (save).mask, (save).set & (save).mask)
#define FEATURE_SET_P(feat, bits) ((feat).set & (bits))
struct ruby_cmdline_options {
const char *script;
VALUE script_name;
VALUE e_script;
struct {
struct {
VALUE name;
int index;
} enc;
} src, ext, intern;
VALUE req_list;
ruby_features_t features;
ruby_features_t warn;
unsigned int dump;
#if USE_MJIT
struct mjit_options mjit;
#endif
int sflag, xflag;
unsigned int warning: 1;
unsigned int verbose: 1;
unsigned int do_loop: 1;
unsigned int do_print: 1;
unsigned int do_line: 1;
unsigned int do_split: 1;
unsigned int do_search: 1;
unsigned int setids: 2;
};
static void init_ids(ruby_cmdline_options_t *);
#define src_encoding_index GET_VM()->src_encoding_index
enum {
COMPILATION_FEATURES = (
0
| FEATURE_BIT(frozen_string_literal)
| FEATURE_BIT(debug_frozen_string_literal)
),
DEFAULT_FEATURES = (
(FEATURE_BIT(debug_flag_first)-1)
#if DISABLE_RUBYGEMS
& ~FEATURE_BIT(gems)
#endif
& ~FEATURE_BIT(frozen_string_literal)
& ~FEATURE_BIT(jit)
)
};
static ruby_cmdline_options_t *
cmdline_options_init(ruby_cmdline_options_t *opt)
{
MEMZERO(opt, *opt, 1);
init_ids(opt);
opt->src.enc.index = src_encoding_index;
opt->ext.enc.index = -1;
opt->intern.enc.index = -1;
opt->features.set = DEFAULT_FEATURES;
#ifdef MJIT_FORCE_ENABLE /* to use with: ./configure cppflags="-DMJIT_FORCE_ENABLE" */
opt->features.set |= FEATURE_BIT(jit);
#endif
return opt;
}
static rb_ast_t *load_file(VALUE parser, VALUE fname, VALUE f, int script,
ruby_cmdline_options_t *opt);
static VALUE open_load_file(VALUE fname_v, int *xflag);
static void forbid_setid(const char *, const ruby_cmdline_options_t *);
#define forbid_setid(s) forbid_setid((s), opt)
static struct {
int argc;
char **argv;
} origarg;
static const char esc_standout[] = "\n\033[1;7m";
static const char esc_bold[] = "\033[1m";
static const char esc_reset[] = "\033[0m";
static const char esc_none[] = "";
static void
show_usage_line(const char *str, unsigned int namelen, unsigned int secondlen, int help, int highlight, unsigned int w)
{
const char *sb = highlight ? esc_bold : esc_none;
const char *se = highlight ? esc_reset : esc_none;
const int wrap = help && namelen + secondlen - 1 > w;
printf(" %s%.*s%-*.*s%s%-*s%s\n", sb, namelen-1, str,
(wrap ? 0 : w - namelen + 1),
(help ? secondlen-1 : 0), str + namelen, se,
(wrap ? w + 3 : 0), (wrap ? "\n" : ""),
str + namelen + secondlen);
}
static void
usage(const char *name, int help, int highlight, int columns)
{
/* This message really ought to be max 23 lines.
* Removed -h because the user already knows that option. Others? */
struct message {
const char *str;
unsigned short namelen, secondlen;
};
#define M(shortopt, longopt, desc) { \
shortopt " " longopt " " desc, \
(unsigned short)sizeof(shortopt), \
(unsigned short)sizeof(longopt), \
}
static const struct message usage_msg[] = {
M("-0[octal]", "", "specify record separator (\\0, if no argument)"),
M("-a", "", "autosplit mode with -n or -p (splits $_ into $F)"),
M("-c", "", "check syntax only"),
M("-Cdirectory", "", "cd to directory before executing your script"),
M("-d", ", --debug", "set debugging flags (set $DEBUG to true)"),
M("-e 'command'", "", "one line of script. Several -e's allowed. Omit [programfile]"),
M("-Eex[:in]", ", --encoding=ex[:in]", "specify the default external and internal character encodings"),
M("-Fpattern", "", "split() pattern for autosplit (-a)"),
M("-i[extension]", "", "edit ARGV files in place (make backup if extension supplied)"),
M("-Idirectory", "", "specify $LOAD_PATH directory (may be used more than once)"),
M("-l", "", "enable line ending processing"),
M("-n", "", "assume 'while gets(); ... end' loop around your script"),
M("-p", "", "assume loop like -n but print line also like sed"),
M("-rlibrary", "", "require the library before executing your script"),
M("-s", "", "enable some switch parsing for switches after script name"),
M("-S", "", "look for the script using PATH environment variable"),
M("-v", "", "print the version number, then turn on verbose mode"),
M("-w", "", "turn warnings on for your script"),
M("-W[level=2|:category]", "", "set warning level; 0=silence, 1=medium, 2=verbose"),
M("-x[directory]", "", "strip off text before #!ruby line and perhaps cd to directory"),
M("--jit", "", "enable JIT with default options (experimental)"),
M("--jit-[option]","", "enable JIT with an option (experimental)"),
M("-h", "", "show this message, --help for more info"),
};
static const struct message help_msg[] = {
M("--copyright", "", "print the copyright"),
M("--dump={insns|parsetree|...}[,...]", "",
"dump debug information. see below for available dump list"),
M("--enable={gems|rubyopt|...}[,...]", ", --disable={gems|rubyopt|...}[,...]",
"enable or disable features. see below for available features"),
M("--external-encoding=encoding", ", --internal-encoding=encoding",
"specify the default external or internal character encoding"),
M("--verbose", "", "turn on verbose mode and disable script from stdin"),
M("--version", "", "print the version number, then exit"),
M("--help", "", "show this message, -h for short message"),
M("--backtrace-limit=num", "", "limit the maximum length of backtrace"),
};
static const struct message dumps[] = {
M("insns", "", "instruction sequences"),
M("yydebug", "", "yydebug of yacc parser generator"),
M("parsetree", "", "AST"),
M("parsetree_with_comment", "", "AST with comments"),
};
static const struct message features[] = {
M("gems", "", "rubygems (default: "DEFAULT_RUBYGEMS_ENABLED")"),
M("did_you_mean", "", "did_you_mean (default: "DEFAULT_RUBYGEMS_ENABLED")"),
M("rubyopt", "", "RUBYOPT environment variable (default: enabled)"),
M("frozen-string-literal", "", "freeze all string literals (default: disabled)"),
M("jit", "", "JIT compiler (default: disabled)"),
};
static const struct message warn_categories[] = {
M("deprecated", "", "deprecated features"),
M("experimental", "", "experimental features"),
};
static const struct message mjit_options[] = {
M("--jit-warnings", "", "Enable printing JIT warnings"),
M("--jit-debug", "", "Enable JIT debugging (very slow), or add cflags if specified"),
M("--jit-wait", "", "Wait until JIT compilation finishes every time (for testing)"),
M("--jit-save-temps", "", "Save JIT temporary files in $TMP or /tmp (for testing)"),
M("--jit-verbose=num", "", "Print JIT logs of level num or less to stderr (default: 0)"),
M("--jit-max-cache=num", "", "Max number of methods to be JIT-ed in a cache (default: 100)"),
M("--jit-min-calls=num", "", "Number of calls to trigger JIT (for testing, default: 10000)"),
};
int i;
const char *sb = highlight ? esc_standout+1 : esc_none;
const char *se = highlight ? esc_reset : esc_none;
const int num = numberof(usage_msg) - (help ? 1 : 0);
unsigned int w = (columns > 80 ? (columns - 79) / 2 : 0) + 16;
#define SHOW(m) show_usage_line((m).str, (m).namelen, (m).secondlen, help, highlight, w)
printf("%sUsage:%s %s [switches] [--] [programfile] [arguments]\n", sb, se, name);
for (i = 0; i < num; ++i)
SHOW(usage_msg[i]);
if (!help) return;
if (highlight) sb = esc_standout;
for (i = 0; i < numberof(help_msg); ++i)
SHOW(help_msg[i]);
printf("%s""Dump List:%s\n", sb, se);
for (i = 0; i < numberof(dumps); ++i)
SHOW(dumps[i]);
printf("%s""Features:%s\n", sb, se);
for (i = 0; i < numberof(features); ++i)
SHOW(features[i]);
printf("%s""Warning categories:%s\n", sb, se);
for (i = 0; i < numberof(warn_categories); ++i)
SHOW(warn_categories[i]);
printf("%s""JIT options (experimental):%s\n", sb, se);
for (i = 0; i < numberof(mjit_options); ++i)
SHOW(mjit_options[i]);
}
#define rubylib_path_new rb_str_new
static void
push_include(const char *path, VALUE (*filter)(VALUE))
{
const char sep = PATH_SEP_CHAR;
const char *p, *s;
VALUE load_path = GET_VM()->load_path;
p = path;
while (*p) {
while (*p == sep)
p++;
if (!*p) break;
for (s = p; *s && *s != sep; s = CharNext(s));
rb_ary_push(load_path, (*filter)(rubylib_path_new(p, s - p)));
p = s;
}
}
#ifdef __CYGWIN__
static void
push_include_cygwin(const char *path, VALUE (*filter)(VALUE))
{
const char *p, *s;
char rubylib[FILENAME_MAX];
VALUE buf = 0;
p = path;
while (*p) {
unsigned int len;
while (*p == ';')
p++;
if (!*p) break;
for (s = p; *s && *s != ';'; s = CharNext(s));
len = s - p;
if (*s) {
if (!buf) {
buf = rb_str_new(p, len);
p = RSTRING_PTR(buf);
}
else {
rb_str_resize(buf, len);
p = strncpy(RSTRING_PTR(buf), p, len);
}
}
#ifdef HAVE_CYGWIN_CONV_PATH
#define CONV_TO_POSIX_PATH(p, lib) \
cygwin_conv_path(CCP_WIN_A_TO_POSIX|CCP_RELATIVE, (p), (lib), sizeof(lib))
#else
# error no cygwin_conv_path
#endif
if (CONV_TO_POSIX_PATH(p, rubylib) == 0)
p = rubylib;
push_include(p, filter);
if (!*s) break;
p = s + 1;
}
}
#define push_include push_include_cygwin
#endif
void
ruby_push_include(const char *path, VALUE (*filter)(VALUE))
{
if (path == 0)
return;
push_include(path, filter);
}
static VALUE
identical_path(VALUE path)
{
return path;
}
static VALUE
locale_path(VALUE path)
{
rb_enc_associate(path, rb_locale_encoding());
return path;
}
void
ruby_incpush(const char *path)
{
ruby_push_include(path, locale_path);
}
static VALUE
expand_include_path(VALUE path)
{
char *p = RSTRING_PTR(path);
if (!p)
return path;
if (*p == '.' && p[1] == '/')
return path;
return rb_file_expand_path(path, Qnil);
}
void
ruby_incpush_expand(const char *path)
{
ruby_push_include(path, expand_include_path);
}
#undef UTF8_PATH
#if defined _WIN32 || defined __CYGWIN__
static HMODULE libruby;
BOOL WINAPI
DllMain(HINSTANCE dll, DWORD reason, LPVOID reserved)
{
if (reason == DLL_PROCESS_ATTACH)
libruby = dll;
return TRUE;
}
HANDLE
rb_libruby_handle(void)
{
return libruby;
}
static inline void
translit_char_bin(char *p, int from, int to)
{
while (*p) {
if ((unsigned char)*p == from)
*p = to;
p++;
}
}
#endif
#ifdef _WIN32
# define UTF8_PATH 1
#endif
#ifndef UTF8_PATH
# define UTF8_PATH 0
#endif
#if UTF8_PATH
# define IF_UTF8_PATH(t, f) t
#else
# define IF_UTF8_PATH(t, f) f
#endif
#if UTF8_PATH
static VALUE
str_conv_enc(VALUE str, rb_encoding *from, rb_encoding *to)
{
return rb_str_conv_enc_opts(str, from, to,
ECONV_UNDEF_REPLACE|ECONV_INVALID_REPLACE,
Qnil);
}
#else
# define str_conv_enc(str, from, to) (str)
#endif
void ruby_init_loadpath(void);
#if defined(LOAD_RELATIVE)
static VALUE
runtime_libruby_path(void)
{
#if defined _WIN32 || defined __CYGWIN__
DWORD len = RSTRING_EMBED_LEN_MAX, ret;
VALUE path;
VALUE wsopath = rb_str_new(0, len*sizeof(WCHAR));
WCHAR *wlibpath;
char *libpath;
while (wlibpath = (WCHAR *)RSTRING_PTR(wsopath),
ret = GetModuleFileNameW(libruby, wlibpath, len),
(ret == len))
{
rb_str_modify_expand(wsopath, len*sizeof(WCHAR));
rb_str_set_len(wsopath, (len += len)*sizeof(WCHAR));
}
if (!ret || ret > len) rb_fatal("failed to get module file name");
#if defined __CYGWIN__
{
const int win_to_posix = CCP_WIN_W_TO_POSIX | CCP_RELATIVE;
size_t newsize = cygwin_conv_path(win_to_posix, wlibpath, 0, 0);
if (!newsize) rb_fatal("failed to convert module path to cygwin");
path = rb_str_new(0, newsize);
libpath = RSTRING_PTR(path);
if (cygwin_conv_path(win_to_posix, wlibpath, libpath, newsize)) {
rb_str_resize(path, 0);
}
}
#else
{
DWORD i;
for (len = ret, i = 0; i < len; ++i) {
if (wlibpath[i] == L'\\') {
wlibpath[i] = L'/';
ret = i+1; /* chop after the last separator */
}
}
}
len = WideCharToMultiByte(CP_UTF8, 0, wlibpath, ret, NULL, 0, NULL, NULL);
path = rb_utf8_str_new(0, len);
libpath = RSTRING_PTR(path);
WideCharToMultiByte(CP_UTF8, 0, wlibpath, ret, libpath, len, NULL, NULL);
#endif
rb_str_resize(wsopath, 0);
return path;
#elif defined(HAVE_DLADDR)
Dl_info dli;
VALUE fname, path;
const void* addr = (void *)(VALUE)expand_include_path;
if (!dladdr((void *)addr, &dli)) {
return rb_str_new(0, 0);
}
#ifdef __linux__
else if (origarg.argc > 0 && origarg.argv && dli.dli_fname == origarg.argv[0]) {
fname = rb_str_new_cstr("/proc/self/exe");
path = rb_readlink(fname, NULL);
}
#endif
else {
fname = rb_str_new_cstr(dli.dli_fname);
path = rb_realpath_internal(Qnil, fname, 1);
}
rb_str_resize(fname, 0);
return path;
#else
# error relative load path is not supported on this platform.
#endif
}
#endif
#define INITIAL_LOAD_PATH_MARK rb_intern_const("@gem_prelude_index")
VALUE ruby_archlibdir_path, ruby_prefix_path;
void
ruby_init_loadpath(void)
{
VALUE load_path, archlibdir = 0;
ID id_initial_load_path_mark;
const char *paths = ruby_initial_load_paths;
#if defined LOAD_RELATIVE
#if !defined ENABLE_MULTIARCH
# define RUBY_ARCH_PATH ""
#elif defined RUBY_ARCH
# define RUBY_ARCH_PATH "/"RUBY_ARCH
#else
# define RUBY_ARCH_PATH "/"RUBY_PLATFORM
#endif
char *libpath;
VALUE sopath;
size_t baselen;
const char *p;
sopath = runtime_libruby_path();
libpath = RSTRING_PTR(sopath);
p = strrchr(libpath, '/');
if (p) {
static const char libdir[] = "/"
#ifdef LIBDIR_BASENAME
LIBDIR_BASENAME
#else
"lib"
#endif
RUBY_ARCH_PATH;
const ptrdiff_t libdir_len = (ptrdiff_t)sizeof(libdir)
- rb_strlen_lit(RUBY_ARCH_PATH) - 1;
static const char bindir[] = "/bin";
const ptrdiff_t bindir_len = (ptrdiff_t)sizeof(bindir) - 1;
const char *p2 = NULL;
#ifdef ENABLE_MULTIARCH
multiarch:
#endif
if (p - libpath >= bindir_len && !STRNCASECMP(p - bindir_len, bindir, bindir_len)) {
p -= bindir_len;
archlibdir = rb_str_subseq(sopath, 0, p - libpath);
rb_str_cat_cstr(archlibdir, libdir);
OBJ_FREEZE_RAW(archlibdir);
}
else if (p - libpath >= libdir_len && !strncmp(p - libdir_len, libdir, libdir_len)) {
archlibdir = rb_str_subseq(sopath, 0, (p2 ? p2 : p) - libpath);
OBJ_FREEZE_RAW(archlibdir);
p -= libdir_len;
}
#ifdef ENABLE_MULTIARCH
else if (p2) {
p = p2;
}
else {
p2 = p;
p = rb_enc_path_last_separator(libpath, p, rb_ascii8bit_encoding());
if (p) goto multiarch;
p = p2;
}
#endif
}
baselen = p - libpath;
rb_str_resize(sopath, baselen);
libpath = RSTRING_PTR(sopath);
#define PREFIX_PATH() sopath
#define BASEPATH() rb_str_buf_cat(rb_str_buf_new(baselen+len), libpath, baselen)
#define RUBY_RELATIVE(path, len) rb_str_buf_cat(BASEPATH(), (path), (len))
#else
const size_t exec_prefix_len = strlen(ruby_exec_prefix);
#define RUBY_RELATIVE(path, len) rubylib_path_new((path), (len))
#define PREFIX_PATH() RUBY_RELATIVE(ruby_exec_prefix, exec_prefix_len)
#endif
rb_gc_register_address(&ruby_prefix_path);
ruby_prefix_path = PREFIX_PATH();
OBJ_FREEZE_RAW(ruby_prefix_path);
if (!archlibdir) archlibdir = ruby_prefix_path;
rb_gc_register_address(&ruby_archlibdir_path);
ruby_archlibdir_path = archlibdir;
load_path = GET_VM()->load_path;
ruby_push_include(getenv("RUBYLIB"), identical_path);
id_initial_load_path_mark = INITIAL_LOAD_PATH_MARK;
while (*paths) {
size_t len = strlen(paths);
VALUE path = RUBY_RELATIVE(paths, len);
rb_ivar_set(path, id_initial_load_path_mark, path);
rb_ary_push(load_path, path);
paths += len + 1;
}
rb_const_set(rb_cObject, rb_intern_const("TMP_RUBY_PREFIX"), ruby_prefix_path);
}
static void
add_modules(VALUE *req_list, const char *mod)
{
VALUE list = *req_list;
VALUE feature;
if (!list) {
*req_list = list = rb_ary_tmp_new(0);
}
feature = rb_str_cat_cstr(rb_str_tmp_new(0), mod);
rb_ary_push(list, feature);
}
static void
require_libraries(VALUE *req_list)
{
VALUE list = *req_list;
VALUE self = rb_vm_top_self();
ID require;
rb_encoding *extenc = rb_default_external_encoding();
CONST_ID(require, "require");
while (list && RARRAY_LEN(list) > 0) {
VALUE feature = rb_ary_shift(list);
rb_enc_associate(feature, extenc);
RBASIC_SET_CLASS_RAW(feature, rb_cString);
OBJ_FREEZE(feature);
rb_funcallv(self, require, 1, &feature);
}
*req_list = 0;
}
static const struct rb_block*
toplevel_context(rb_binding_t *bind)
{
return &bind->block;
}
static void
process_sflag(int *sflag)
{
if (*sflag > 0) {
long n;
const VALUE *args;
VALUE argv = rb_argv;
n = RARRAY_LEN(argv);
args = RARRAY_CONST_PTR(argv);
while (n > 0) {
VALUE v = *args++;
char *s = StringValuePtr(v);
char *p;
int hyphen = FALSE;
if (s[0] != '-')
break;
n--;
if (s[1] == '-' && s[2] == '\0')
break;
v = Qtrue;
/* check if valid name before replacing - with _ */
for (p = s + 1; *p; p++) {
if (*p == '=') {
*p++ = '\0';
v = rb_str_new2(p);
break;
}
if (*p == '-') {
hyphen = TRUE;
}
else if (*p != '_' && !ISALNUM(*p)) {
VALUE name_error[2];
name_error[0] =
rb_str_new2("invalid name for global variable - ");
if (!(p = strchr(p, '='))) {
rb_str_cat2(name_error[0], s);
}
else {
rb_str_cat(name_error[0], s, p - s);
}
name_error[1] = args[-1];
rb_exc_raise(rb_class_new_instance(2, name_error, rb_eNameError));
}
}
s[0] = '$';
if (hyphen) {
for (p = s + 1; *p; ++p) {
if (*p == '-')
*p = '_';
}
}
rb_gv_set(s, v);
}
n = RARRAY_LEN(argv) - n;
while (n--) {
rb_ary_shift(argv);
}
*sflag = -1;
}
}
static long proc_options(long argc, char **argv, ruby_cmdline_options_t *opt, int envopt);
static void
moreswitches(const char *s, ruby_cmdline_options_t *opt, int envopt)
{
long argc, i, len;
char **argv, *p;
const char *ap = 0;
VALUE argstr, argary;
void *ptr;
while (ISSPACE(*s)) s++;
if (!*s) return;
argstr = rb_str_tmp_new((len = strlen(s)) + (envopt!=0));
argary = rb_str_tmp_new(0);
p = RSTRING_PTR(argstr);
if (envopt) *p++ = ' ';
memcpy(p, s, len + 1);
ap = 0;
rb_str_cat(argary, (char *)&ap, sizeof(ap));
while (*p) {
ap = p;
rb_str_cat(argary, (char *)&ap, sizeof(ap));
while (*p && !ISSPACE(*p)) ++p;
if (!*p) break;
*p++ = '\0';
while (ISSPACE(*p)) ++p;
}
argc = RSTRING_LEN(argary) / sizeof(ap);
ap = 0;
rb_str_cat(argary, (char *)&ap, sizeof(ap));
argv = ptr = ALLOC_N(char *, argc);
MEMMOVE(argv, RSTRING_PTR(argary), char *, argc);
while ((i = proc_options(argc, argv, opt, envopt)) > 1 && envopt && (argc -= i) > 0) {
argv += i;
if (**argv != '-') {
*--*argv = '-';
}
if ((*argv)[1]) {
++argc;
--argv;
}
}
ruby_xfree(ptr);
/* get rid of GC */
rb_str_resize(argary, 0);
rb_str_resize(argstr, 0);
}
static int
name_match_p(const char *name, const char *str, size_t len)
{
if (len == 0) return 0;
while (1) {
while (TOLOWER(*str) == *name) {
if (!--len || !*++str) return 1;
++name;
}
if (*str != '-' && *str != '_') return 0;
while (ISALNUM(*name)) name++;
if (*name != '-' && *name != '_') return 0;
++name;
++str;
}
}
#define NAME_MATCH_P(name, str, len) \
((len) < (int)sizeof(name) && name_match_p((name), (str), (len)))
#define UNSET_WHEN(name, bit, str, len) \
if (NAME_MATCH_P((name), (str), (len))) { \
*(unsigned int *)arg &= ~(bit); \
return; \
}
#define SET_WHEN(name, bit, str, len) \
if (NAME_MATCH_P((name), (str), (len))) { \
*(unsigned int *)arg |= (bit); \
return; \
}
#define LITERAL_NAME_ELEMENT(name) #name
static void
feature_option(const char *str, int len, void *arg, const unsigned int enable)
{
static const char list[] = EACH_FEATURES(LITERAL_NAME_ELEMENT, ", ");
ruby_features_t *argp = arg;
unsigned int mask = ~0U;
unsigned int set = 0U;
#if AMBIGUOUS_FEATURE_NAMES
int matched = 0;
# define FEATURE_FOUND ++matched
#else
# define FEATURE_FOUND goto found
#endif
#define SET_FEATURE(bit) \
if (NAME_MATCH_P(#bit, str, len)) {set |= mask = FEATURE_BIT(bit); FEATURE_FOUND;}
EACH_FEATURES(SET_FEATURE, ;);
if (NAME_MATCH_P("all", str, len)) {
goto found;
}
#if AMBIGUOUS_FEATURE_NAMES
if (matched == 1) goto found;
if (matched > 1) {
VALUE mesg = rb_sprintf("ambiguous feature: `%.*s' (", len, str);
#define ADD_FEATURE_NAME(bit) \
if (FEATURE_BIT(bit) & set) { \
rb_str_cat_cstr(mesg, #bit); \
if (--matched) rb_str_cat_cstr(mesg, ", "); \
}
EACH_FEATURES(ADD_FEATURE_NAME, ;);
rb_str_cat_cstr(mesg, ")");
rb_exc_raise(rb_exc_new_str(rb_eRuntimeError, mesg));
#undef ADD_FEATURE_NAME
}
#endif
rb_warn("unknown argument for --%s: `%.*s'",
enable ? "enable" : "disable", len, str);
rb_warn("features are [%.*s].", (int)strlen(list), list);
return;
found:
FEATURE_SET_TO(*argp, mask, (mask & enable));
return;
}
static void
enable_option(const char *str, int len, void *arg)
{
feature_option(str, len, arg, ~0U);
}
static void
disable_option(const char *str, int len, void *arg)
{
feature_option(str, len, arg, 0U);
}
RUBY_EXTERN const int ruby_patchlevel;
int ruby_env_debug_option(const char *str, int len, void *arg);
static void
debug_option(const char *str, int len, void *arg)
{
static const char list[] = EACH_DEBUG_FEATURES(LITERAL_NAME_ELEMENT, ", ");
ruby_features_t *argp = arg;
#define SET_WHEN_DEBUG(bit) \
if (NAME_MATCH_P(#bit, str, len)) { \
FEATURE_SET(*argp, DEBUG_BIT(bit)); \
return; \
}
EACH_DEBUG_FEATURES(SET_WHEN_DEBUG, ;);
#ifdef RUBY_DEVEL
if (ruby_patchlevel < 0 && ruby_env_debug_option(str, len, 0)) return;
#endif
rb_warn("unknown argument for --debug: `%.*s'", len, str);
rb_warn("debug features are [%.*s].", (int)strlen(list), list);
}
static void
dump_option(const char *str, int len, void *arg)
{
static const char list[] = EACH_DUMPS(LITERAL_NAME_ELEMENT, ", ");
#define SET_WHEN_DUMP(bit) SET_WHEN(#bit, DUMP_BIT(bit), str, len)
EACH_DUMPS(SET_WHEN_DUMP, ;);
rb_warn("don't know how to dump `%.*s',", len, str);
rb_warn("but only [%.*s].", (int)strlen(list), list);
}
static void
set_option_encoding_once(const char *type, VALUE *name, const char *e, long elen)
{
VALUE ename;
if (!elen) elen = strlen(e);
ename = rb_str_new(e, elen);
if (*name &&
rb_funcall(ename, rb_intern("casecmp"), 1, *name) != INT2FIX(0)) {
rb_raise(rb_eRuntimeError,
"%s already set to %"PRIsVALUE, type, *name);
}
*name = ename;
}
#define set_internal_encoding_once(opt, e, elen) \
set_option_encoding_once("default_internal", &(opt)->intern.enc.name, (e), (elen))
#define set_external_encoding_once(opt, e, elen) \
set_option_encoding_once("default_external", &(opt)->ext.enc.name, (e), (elen))
#define set_source_encoding_once(opt, e, elen) \
set_option_encoding_once("source", &(opt)->src.enc.name, (e), (elen))
#if USE_MJIT
static void
setup_mjit_options(const char *s, struct mjit_options *mjit_opt)
{
#define opt_match(s, l, name) \
((((l) > rb_strlen_lit(name)) ? (s)[rb_strlen_lit(name)] == '=' : \
(l) == rb_strlen_lit(name)) && \
memcmp((s), name, rb_strlen_lit(name)) == 0 && \
(((s) += rb_strlen_lit(name)), 1))
#define opt_match_noarg(s, l, name) \
opt_match(s, l, name) && (*(s) ? (rb_warn("argument to --jit-" name " is ignored"), 1) : 1)
#define opt_match_arg(s, l, name) \
opt_match(s, l, name) && (*(s) ? 1 : (rb_raise(rb_eRuntimeError, "--jit-" name " needs an argument"), 0))
if (*s != '-') return;
const size_t l = strlen(++s);
if (*s == 0) return;
else if (opt_match_noarg(s, l, "warnings")) {
mjit_opt->warnings = 1;
}
else if (opt_match(s, l, "debug")) {
if (*s)
mjit_opt->debug_flags = strdup(s + 1);
else
mjit_opt->debug = 1;
}
else if (opt_match_noarg(s, l, "wait")) {
mjit_opt->wait = 1;
}
else if (opt_match_noarg(s, l, "save-temps")) {
mjit_opt->save_temps = 1;
}
else if (opt_match(s, l, "verbose")) {
mjit_opt->verbose = *s ? atoi(s + 1) : 1;
}
else if (opt_match_arg(s, l, "max-cache")) {
mjit_opt->max_cache_size = atoi(s + 1);
}
else if (opt_match_arg(s, l, "min-calls")) {
mjit_opt->min_calls = atoi(s + 1);
}
else {
rb_raise(rb_eRuntimeError,
"invalid MJIT option `%s' (--help will show valid MJIT options)", s);
}
}
#endif
static long
proc_options(long argc, char **argv, ruby_cmdline_options_t *opt, int envopt)
{
long n, argc0 = argc;
const char *s;
int warning = opt->warning;
if (argc <= 0 || !argv)
return 0;
for (argc--, argv++; argc > 0; argc--, argv++) {
const char *const arg = argv[0];
if (!arg || arg[0] != '-' || !arg[1])
break;
s = arg + 1;
reswitch:
switch (*s) {
case 'a':
if (envopt) goto noenvopt;
opt->do_split = TRUE;
s++;
goto reswitch;
case 'p':
if (envopt) goto noenvopt;
opt->do_print = TRUE;
/* through */
case 'n':
if (envopt) goto noenvopt;
opt->do_loop = TRUE;
s++;
goto reswitch;
case 'd':
ruby_debug = Qtrue;
ruby_verbose = Qtrue;
s++;
goto reswitch;
case 'y':
if (envopt) goto noenvopt;
opt->dump |= DUMP_BIT(yydebug);
s++;
goto reswitch;
case 'v':
if (opt->verbose) {
s++;
goto reswitch;
}
opt->dump |= DUMP_BIT(version_v);
opt->verbose = 1;
case 'w':
if (!opt->warning) {
warning = 1;
ruby_verbose = Qtrue;
}
FEATURE_SET(opt->warn, RB_WARN_CATEGORY_ALL_BITS);
s++;
goto reswitch;
case 'W':
if (s[1] == ':') {
unsigned int bits = 0;
static const char no_prefix[] = "no-";
int enable = strncmp(s += 2, no_prefix, sizeof(no_prefix)-1) != 0;
if (!enable) s += sizeof(no_prefix)-1;
size_t len = strlen(s);
if (NAME_MATCH_P("deprecated", s, len)) {
bits = 1U << RB_WARN_CATEGORY_DEPRECATED;
}
else if (NAME_MATCH_P("experimental", s, len)) {
bits = 1U << RB_WARN_CATEGORY_EXPERIMENTAL;
}
else {
rb_warn("unknown warning category: `%s'", s);
}
if (bits) FEATURE_SET_TO(opt->warn, bits, enable ? bits : 0);
break;
}
{
size_t numlen;
int v = 2; /* -W as -W2 */
if (*++s) {
v = scan_oct(s, 1, &numlen);
if (numlen == 0)
v = 1;
s += numlen;
}
if (!opt->warning) {
switch (v) {
case 0:
ruby_verbose = Qnil;
break;
case 1:
ruby_verbose = Qfalse;
break;
default:
ruby_verbose = Qtrue;
break;
}
}
warning = 1;
switch (v) {
case 0:
FEATURE_SET_TO(opt->warn, RB_WARN_CATEGORY_ALL_BITS, 0);
break;
case 1:
FEATURE_SET_TO(opt->warn, 1U << RB_WARN_CATEGORY_DEPRECATED, 0);
break;
default:
FEATURE_SET(opt->warn, RB_WARN_CATEGORY_ALL_BITS);
break;
}
}
goto reswitch;
case 'c':
if (envopt) goto noenvopt;
opt->dump |= DUMP_BIT(syntax);
s++;
goto reswitch;
case 's':
if (envopt) goto noenvopt;
forbid_setid("-s");
if (!opt->sflag) opt->sflag = 1;
s++;
goto reswitch;
case 'h':
if (envopt) goto noenvopt;
opt->dump |= DUMP_BIT(usage);
goto switch_end;
case 'l':
if (envopt) goto noenvopt;
opt->do_line = TRUE;
rb_output_rs = rb_rs;
s++;
goto reswitch;
case 'S':
if (envopt) goto noenvopt;
forbid_setid("-S");
opt->do_search = TRUE;
s++;
goto reswitch;
case 'e':
if (envopt) goto noenvopt;
forbid_setid("-e");
if (!*++s) {
if (!--argc)
rb_raise(rb_eRuntimeError, "no code specified for -e");
s = *++argv;
}
if (!opt->e_script) {
opt->e_script = rb_str_new(0, 0);
if (opt->script == 0)
opt->script = "-e";
}
rb_str_cat2(opt->e_script, s);
rb_str_cat2(opt->e_script, "\n");
break;
case 'r':
forbid_setid("-r");
if (*++s) {
add_modules(&opt->req_list, s);
}
else if (argc > 1) {
add_modules(&opt->req_list, argv[1]);
argc--, argv++;
}
break;
case 'i':
if (envopt) goto noenvopt;
forbid_setid("-i");
ruby_set_inplace_mode(s + 1);
break;
case 'x':
if (envopt) goto noenvopt;
forbid_setid("-x");
opt->xflag = TRUE;
s++;
if (*s && chdir(s) < 0) {
rb_fatal("Can't chdir to %s", s);
}
break;
case 'C':
case 'X':
if (envopt) goto noenvopt;
if (!*++s && (!--argc || !(s = *++argv) || !*s)) {
rb_fatal("Can't chdir");
}
if (chdir(s) < 0) {
rb_fatal("Can't chdir to %s", s);
}
break;
case 'F':
if (envopt) goto noenvopt;
if (*++s) {
rb_fs = rb_reg_new(s, strlen(s), 0);
}
break;
case 'E':
if (!*++s && (!--argc || !(s = *++argv))) {
rb_raise(rb_eRuntimeError, "missing argument for -E");
}
goto encoding;
case 'U':
set_internal_encoding_once(opt, "UTF-8", 0);
++s;
goto reswitch;
case 'K':
if (*++s) {
const char *enc_name = 0;
switch (*s) {
case 'E': case 'e':
enc_name = "EUC-JP";
break;
case 'S': case 's':
enc_name = "Windows-31J";
break;
case 'U': case 'u':
enc_name = "UTF-8";
break;
case 'N': case 'n': case 'A': case 'a':
enc_name = "ASCII-8BIT";
break;
}
if (enc_name) {
opt->src.enc.name = rb_str_new2(enc_name);
if (!opt->ext.enc.name)
opt->ext.enc.name = opt->src.enc.name;
}
s++;
}
goto reswitch;
case 'I':
forbid_setid("-I");
if (*++s)
ruby_incpush_expand(s);
else if (argc > 1) {
ruby_incpush_expand(argv[1]);
argc--, argv++;
}
break;
case '0':
if (envopt) goto noenvopt;
{
size_t numlen;
int v;
char c;
v = scan_oct(s, 4, &numlen);
s += numlen;
if (v > 0377)
rb_rs = Qnil;
else if (v == 0 && numlen >= 2) {
rb_rs = rb_str_new2("");
}
else {
c = v & 0xff;
rb_rs = rb_str_new(&c, 1);
}
}
goto reswitch;
case '-':
if (!s[1] || (s[1] == '\r' && !s[2])) {
argc--, argv++;
goto switch_end;
}
s++;
# define is_option_end(c, allow_hyphen) \
(!(c) || ((allow_hyphen) && (c) == '-') || (c) == '=')
# define check_envopt(name, allow_envopt) \
(((allow_envopt) || !envopt) ? (void)0 : \
rb_raise(rb_eRuntimeError, "invalid switch in RUBYOPT: --" name))
# define need_argument(name, s, needs_arg, next_arg) \
((*(s) ? !*++(s) : (next_arg) && (!argc || !((s) = argv[1]) || (--argc, ++argv, 0))) && (needs_arg) ? \
rb_raise(rb_eRuntimeError, "missing argument for --" name) \
: (void)0)
# define is_option_with_arg(name, allow_hyphen, allow_envopt) \
is_option_with_optarg(name, allow_hyphen, allow_envopt, Qtrue, Qtrue)
# define is_option_with_optarg(name, allow_hyphen, allow_envopt, needs_arg, next_arg) \
(strncmp((name), s, n = sizeof(name) - 1) == 0 && is_option_end(s[n], (allow_hyphen)) ? \
(check_envopt(name, (allow_envopt)), s += n, \
need_argument(name, s, needs_arg, next_arg), 1) : 0)
if (strcmp("copyright", s) == 0) {
if (envopt) goto noenvopt_long;
opt->dump |= DUMP_BIT(copyright);
}
else if (is_option_with_optarg("debug", Qtrue, Qtrue, Qfalse, Qfalse)) {
if (s && *s) {
ruby_each_words(s, debug_option, &opt->features);
}
else {
ruby_debug = Qtrue;
ruby_verbose = Qtrue;
}
}
else if (is_option_with_arg("enable", Qtrue, Qtrue)) {
ruby_each_words(s, enable_option, &opt->features);
}
else if (is_option_with_arg("disable", Qtrue, Qtrue)) {
ruby_each_words(s, disable_option, &opt->features);
}
else if (is_option_with_arg("encoding", Qfalse, Qtrue)) {
char *p;
encoding:
do {
# define set_encoding_part(type) \
if (!(p = strchr(s, ':'))) { \
set_##type##_encoding_once(opt, s, 0); \
break; \
} \
else if (p > s) { \
set_##type##_encoding_once(opt, s, p-s); \
}
set_encoding_part(external);
if (!*(s = ++p)) break;
set_encoding_part(internal);
if (!*(s = ++p)) break;
#if defined ALLOW_DEFAULT_SOURCE_ENCODING && ALLOW_DEFAULT_SOURCE_ENCODING
set_encoding_part(source);
if (!*(s = ++p)) break;
#endif
rb_raise(rb_eRuntimeError, "extra argument for %s: %s",
(arg[1] == '-' ? "--encoding" : "-E"), s);
# undef set_encoding_part
} while (0);
}
else if (is_option_with_arg("internal-encoding", Qfalse, Qtrue)) {
set_internal_encoding_once(opt, s, 0);
}
else if (is_option_with_arg("external-encoding", Qfalse, Qtrue)) {
set_external_encoding_once(opt, s, 0);
}
#if defined ALLOW_DEFAULT_SOURCE_ENCODING && ALLOW_DEFAULT_SOURCE_ENCODING
else if (is_option_with_arg("source-encoding", Qfalse, Qtrue)) {
set_source_encoding_once(opt, s, 0);
}
#endif
else if (strcmp("version", s) == 0) {
if (envopt) goto noenvopt_long;
opt->dump |= DUMP_BIT(version);
}
else if (strcmp("verbose", s) == 0) {
opt->verbose = 1;
ruby_verbose = Qtrue;
}
else if (strncmp("jit", s, 3) == 0) {
#if USE_MJIT
FEATURE_SET(opt->features, FEATURE_BIT(jit));
setup_mjit_options(s + 3, &opt->mjit);
#else
rb_warn("MJIT support is disabled.");
#endif
}
else if (strcmp("yydebug", s) == 0) {
if (envopt) goto noenvopt_long;
opt->dump |= DUMP_BIT(yydebug);
}
else if (is_option_with_arg("dump", Qfalse, Qfalse)) {
ruby_each_words(s, dump_option, &opt->dump);
}
else if (strcmp("help", s) == 0) {
if (envopt) goto noenvopt_long;
opt->dump |= DUMP_BIT(help);
goto switch_end;
}
else if (is_option_with_arg("backtrace-limit", Qfalse, Qfalse)) {
char *e;
long n = strtol(s, &e, 10);
if (errno == ERANGE || n < 0 || *e) rb_raise(rb_eRuntimeError, "wrong limit for backtrace length");
rb_backtrace_length_limit = n;
}
else {
rb_raise(rb_eRuntimeError,
"invalid option --%s (-h will show valid options)", s);
}
break;
case '\r':
if (!s[1])
break;
default:
{
rb_raise(rb_eRuntimeError,
"invalid option -%c (-h will show valid options)",
(int)(unsigned char)*s);
}
goto switch_end;
noenvopt:
/* "EIdvwWrKU" only */
rb_raise(rb_eRuntimeError, "invalid switch in RUBYOPT: -%c", *s);
break;
noenvopt_long:
rb_raise(rb_eRuntimeError, "invalid switch in RUBYOPT: --%s", s);
break;
case 0:
break;
# undef is_option_end
# undef check_envopt
# undef need_argument
# undef is_option_with_arg
# undef is_option_with_optarg
}
}
switch_end:
if (warning) opt->warning = warning;
return argc0 - argc;
}
void Init_builtin_features(void);
static void
ruby_init_prelude(void)
{
Init_builtin_features();
rb_const_remove(rb_cObject, rb_intern_const("TMP_RUBY_PREFIX"));
}
void rb_call_builtin_inits(void);
static void
ruby_opt_init(ruby_cmdline_options_t *opt)
{
if (opt->dump & dump_exit_bits) return;
if (opt->features.set & FEATURE_BIT(gems)) {
rb_define_module("Gem");
if (opt->features.set & FEATURE_BIT(did_you_mean)) {
rb_define_module("DidYouMean");
}
}
Init_ext(); /* load statically linked extensions before rubygems */
rb_call_builtin_inits();
ruby_init_prelude();
ruby_set_script_name(opt->script_name);
require_libraries(&opt->req_list);
}
static int
opt_enc_index(VALUE enc_name)
{
const char *s = RSTRING_PTR(enc_name);
int i = rb_enc_find_index(s);
if (i < 0) {
rb_raise(rb_eRuntimeError, "unknown encoding name - %s", s);
}
else if (rb_enc_dummy_p(rb_enc_from_index(i))) {
rb_raise(rb_eRuntimeError, "dummy encoding is not acceptable - %s ", s);
}
return i;
}
#define rb_progname (GET_VM()->progname)
#define rb_orig_progname (GET_VM()->orig_progname)
VALUE rb_argv0;
VALUE rb_e_script;
static VALUE
false_value(ID _x, VALUE *_y)
{
return Qfalse;
}
static VALUE
true_value(ID _x, VALUE *_y)
{
return Qtrue;
}
#define rb_define_readonly_boolean(name, val) \
rb_define_virtual_variable((name), (val) ? true_value : false_value, 0)
static VALUE
uscore_get(void)
{
VALUE line;
line = rb_lastline_get();
if (!RB_TYPE_P(line, T_STRING)) {
rb_raise(rb_eTypeError, "$_ value need to be String (%s given)",
NIL_P(line) ? "nil" : rb_obj_classname(line));
}
return line;
}
/*
* call-seq:
* sub(pattern, replacement) -> $_
* sub(pattern) {|...| block } -> $_
*
* Equivalent to <code>$_.sub(<i>args</i>)</code>, except that
* <code>$_</code> will be updated if substitution occurs.
* Available only when -p/-n command line option specified.
*/
static VALUE
rb_f_sub(int argc, VALUE *argv, VALUE _)
{
VALUE str = rb_funcall_passing_block(uscore_get(), rb_intern("sub"), argc, argv);
rb_lastline_set(str);
return str;
}
/*
* call-seq:
* gsub(pattern, replacement) -> $_
* gsub(pattern) {|...| block } -> $_
*
* Equivalent to <code>$_.gsub...</code>, except that <code>$_</code>
* will be updated if substitution occurs.
* Available only when -p/-n command line option specified.
*
*/
static VALUE
rb_f_gsub(int argc, VALUE *argv, VALUE _)
{
VALUE str = rb_funcall_passing_block(uscore_get(), rb_intern("gsub"), argc, argv);
rb_lastline_set(str);
return str;
}
/*
* call-seq:
* chop -> $_
*
* Equivalent to <code>($_.dup).chop!</code>, except <code>nil</code>
* is never returned. See String#chop!.
* Available only when -p/-n command line option specified.
*
*/
static VALUE
rb_f_chop(VALUE _)
{
VALUE str = rb_funcall_passing_block(uscore_get(), rb_intern("chop"), 0, 0);
rb_lastline_set(str);
return str;
}
/*
* call-seq:
* chomp -> $_
* chomp(string) -> $_
*
* Equivalent to <code>$_ = $_.chomp(<em>string</em>)</code>. See
* String#chomp.
* Available only when -p/-n command line option specified.
*
*/
static VALUE
rb_f_chomp(int argc, VALUE *argv, VALUE _)
{
VALUE str = rb_funcall_passing_block(uscore_get(), rb_intern("chomp"), argc, argv);
rb_lastline_set(str);
return str;
}
static void
setup_pager_env(void)
{
if (!getenv("LESS")) ruby_setenv("LESS", "-R"); // Output "raw" control characters.
}
static VALUE
process_options(int argc, char **argv, ruby_cmdline_options_t *opt)
{
rb_ast_t *ast = 0;
VALUE parser;
VALUE script_name;
const rb_iseq_t *iseq;
rb_encoding *enc, *lenc;
#if UTF8_PATH
rb_encoding *uenc, *ienc = 0;
#endif
const char *s;
char fbuf[MAXPATHLEN];
int i = (int)proc_options(argc, argv, opt, 0);
unsigned int dump = opt->dump & dump_exit_bits;
if (opt->dump & (DUMP_BIT(usage)|DUMP_BIT(help))) {
int tty = isatty(1);
const char *const progname =
(argc > 0 && argv && argv[0] ? argv[0] :
origarg.argc > 0 && origarg.argv && origarg.argv[0] ? origarg.argv[0] :
ruby_engine);
int columns = 0;
if ((opt->dump & DUMP_BIT(help)) && tty) {
const char *pager_env = getenv("RUBY_PAGER");
if (!pager_env) pager_env = getenv("PAGER");
if (pager_env && *pager_env && isatty(0)) {
const char *columns_env = getenv("COLUMNS");
if (columns_env) columns = atoi(columns_env);
VALUE pager = rb_str_new_cstr(pager_env);
#ifdef HAVE_WORKING_FORK
int fds[2];
if (rb_pipe(fds) == 0) {
rb_pid_t pid = rb_fork();
if (pid > 0) {
/* exec PAGER with reading from child */
dup2(fds[0], 0);
}
else if (pid == 0) {
/* send the help message to the parent PAGER */
dup2(fds[1], 1);
dup2(fds[1], 2);
}
close(fds[0]);
close(fds[1]);
if (pid > 0) {
setup_pager_env();
rb_f_exec(1, &pager);
kill(SIGTERM, pid);
rb_waitpid(pid, 0, 0);
}
}
#else
setup_pager_env();
VALUE port = rb_io_popen(pager, rb_str_new_lit("w"), Qnil, Qnil);
if (!NIL_P(port)) {
int oldout = dup(1);
int olderr = dup(2);
int fd = RFILE(port)->fptr->fd;
dup2(fd, 1);
dup2(fd, 2);
/* more.com doesn't support CSI sequence */
usage(progname, 1, 0, columns);
fflush(stdout);
dup2(oldout, 1);
dup2(olderr, 2);
rb_io_close(port);
return Qtrue;
}
#endif
}
}
usage(progname, (opt->dump & DUMP_BIT(help)), tty, columns);
return Qtrue;
}
argc -= i;
argv += i;
if ((opt->features.set & FEATURE_BIT(rubyopt)) && (s = getenv("RUBYOPT"))) {
VALUE src_enc_name = opt->src.enc.name;
VALUE ext_enc_name = opt->ext.enc.name;
VALUE int_enc_name = opt->intern.enc.name;
ruby_features_t feat = opt->features;
ruby_features_t warn = opt->warn;
opt->src.enc.name = opt->ext.enc.name = opt->intern.enc.name = 0;
moreswitches(s, opt, 1);
if (src_enc_name)
opt->src.enc.name = src_enc_name;
if (ext_enc_name)
opt->ext.enc.name = ext_enc_name;
if (int_enc_name)
opt->intern.enc.name = int_enc_name;
FEATURE_SET_RESTORE(opt->features, feat);
FEATURE_SET_RESTORE(opt->warn, warn);
}
if (opt->src.enc.name)
rb_warning("-K is specified; it is for 1.8 compatibility and may cause odd behavior");
#if USE_MJIT
if (opt->features.set & FEATURE_BIT(jit)) {
opt->mjit.on = TRUE; /* set mjit.on for ruby_show_version() API and check to call mjit_init() */
}
#endif
if (opt->dump & (DUMP_BIT(version) | DUMP_BIT(version_v))) {
#if USE_MJIT
mjit_opts.on = opt->mjit.on; /* used by ruby_show_version(). mjit_init() still can't be called here. */
#endif
ruby_show_version();
if (opt->dump & DUMP_BIT(version)) return Qtrue;
}
if (opt->dump & DUMP_BIT(copyright)) {
ruby_show_copyright();
return Qtrue;
}
if (!opt->e_script) {
if (argc <= 0) { /* no more args */
if (opt->verbose)
return Qtrue;
opt->script = "-";
}
else {
opt->script = argv[0];
if (!opt->script || opt->script[0] == '\0') {
opt->script = "-";
}
else if (opt->do_search) {
char *path = getenv("RUBYPATH");
opt->script = 0;
if (path) {
opt->script = dln_find_file_r(argv[0], path, fbuf, sizeof(fbuf));
}
if (!opt->script) {
opt->script = dln_find_file_r(argv[0], getenv(PATH_ENV), fbuf, sizeof(fbuf));
}
if (!opt->script)
opt->script = argv[0];
}
argc--;
argv++;
}
if (opt->script[0] == '-' && !opt->script[1]) {
forbid_setid("program input from stdin");
}
}
opt->script_name = rb_str_new_cstr(opt->script);
opt->script = RSTRING_PTR(opt->script_name);
#if _WIN32
translit_char_bin(RSTRING_PTR(opt->script_name), '\\', '/');
#elif defined DOSISH
translit_char(RSTRING_PTR(opt->script_name), '\\', '/');
#endif
ruby_gc_set_params();
ruby_init_loadpath();
#if USE_MJIT
if (opt->mjit.on)
/* Using TMP_RUBY_PREFIX created by ruby_init_loadpath(). */
mjit_init(&opt->mjit);
#endif
Init_ruby_description();
Init_enc();
lenc = rb_locale_encoding();
rb_enc_associate(rb_progname, lenc);
rb_obj_freeze(rb_progname);
parser = rb_parser_new();
if (opt->dump & DUMP_BIT(yydebug)) {
rb_parser_set_yydebug(parser, Qtrue);
}
if (opt->ext.enc.name != 0) {
opt->ext.enc.index = opt_enc_index(opt->ext.enc.name);
}
if (opt->intern.enc.name != 0) {
opt->intern.enc.index = opt_enc_index(opt->intern.enc.name);
}
if (opt->src.enc.name != 0) {
opt->src.enc.index = opt_enc_index(opt->src.enc.name);
src_encoding_index = opt->src.enc.index;
}
if (opt->ext.enc.index >= 0) {
enc = rb_enc_from_index(opt->ext.enc.index);
}
else {
enc = lenc;
}
rb_enc_set_default_external(rb_enc_from_encoding(enc));
if (opt->intern.enc.index >= 0) {
enc = rb_enc_from_index(opt->intern.enc.index);
rb_enc_set_default_internal(rb_enc_from_encoding(enc));
opt->intern.enc.index = -1;
#if UTF8_PATH
ienc = enc;
#endif
}
script_name = opt->script_name;
rb_enc_associate(opt->script_name,
IF_UTF8_PATH(uenc = rb_utf8_encoding(), lenc));
#if UTF8_PATH
if (uenc != lenc) {
opt->script_name = str_conv_enc(opt->script_name, uenc, lenc);
opt->script = RSTRING_PTR(opt->script_name);
}
#endif
rb_obj_freeze(opt->script_name);
if (IF_UTF8_PATH(uenc != lenc, 1)) {
long i;
rb_vm_t *vm = GET_VM();
VALUE load_path = vm->load_path;
const ID id_initial_load_path_mark = INITIAL_LOAD_PATH_MARK;
int modifiable = FALSE;
rb_get_expanded_load_path();
for (i = 0; i < RARRAY_LEN(load_path); ++i) {
VALUE path = RARRAY_AREF(load_path, i);
int mark = rb_attr_get(path, id_initial_load_path_mark) == path;
#if UTF8_PATH
VALUE newpath = rb_str_conv_enc(path, uenc, lenc);
if (newpath == path) continue;
path = newpath;
#else
path = rb_enc_associate(rb_str_dup(path), lenc);
#endif
if (mark) rb_ivar_set(path, id_initial_load_path_mark, path);
if (!modifiable) {
rb_ary_modify(load_path);
modifiable = TRUE;
}
RARRAY_ASET(load_path, i, path);
}
if (modifiable) {
rb_ary_replace(vm->load_path_snapshot, load_path);
}
}
if (opt->features.mask & COMPILATION_FEATURES) {
VALUE option = rb_hash_new();
#define SET_COMPILE_OPTION(h, o, name) \
rb_hash_aset((h), ID2SYM(rb_intern_const(#name)), \
(FEATURE_SET_P(o->features, FEATURE_BIT(name)) ? Qtrue : Qfalse));
SET_COMPILE_OPTION(option, opt, frozen_string_literal);
SET_COMPILE_OPTION(option, opt, debug_frozen_string_literal);
rb_funcallv(rb_cISeq, rb_intern_const("compile_option="), 1, &option);
#undef SET_COMPILE_OPTION
}
ruby_set_argv(argc, argv);
process_sflag(&opt->sflag);
rb_parser_set_context(parser, 0, TRUE);
if (opt->e_script) {
VALUE progname = rb_progname;
rb_encoding *eenc;
if (opt->src.enc.index >= 0) {
eenc = rb_enc_from_index(opt->src.enc.index);
}
else {
eenc = lenc;
#if UTF8_PATH
if (ienc) eenc = ienc;
#endif
}
#if UTF8_PATH
if (eenc != uenc) {
opt->e_script = str_conv_enc(opt->e_script, uenc, eenc);
}
#endif
rb_enc_associate(opt->e_script, eenc);
ruby_opt_init(opt);
ruby_set_script_name(progname);
rb_parser_set_options(parser, opt->do_print, opt->do_loop,
opt->do_line, opt->do_split);
rb_warning_category_update(opt->warn.mask, opt->warn.set);
ast = rb_parser_compile_string(parser, opt->script, opt->e_script, 1);
}
else {
VALUE f;
f = open_load_file(script_name, &opt->xflag);
ast = load_file(parser, opt->script_name, f, 1, opt);
}
ruby_set_script_name(opt->script_name);
if (dump & DUMP_BIT(yydebug)) {
dump &= ~DUMP_BIT(yydebug);
if (!dump) return Qtrue;
}
if (opt->ext.enc.index >= 0) {
enc = rb_enc_from_index(opt->ext.enc.index);
}
else {
enc = lenc;
}
rb_enc_set_default_external(rb_enc_from_encoding(enc));
if (opt->intern.enc.index >= 0) {
/* Set in the shebang line */
enc = rb_enc_from_index(opt->intern.enc.index);
rb_enc_set_default_internal(rb_enc_from_encoding(enc));
}
else if (!rb_default_internal_encoding())
/* Freeze default_internal */
rb_enc_set_default_internal(Qnil);
rb_stdio_set_default_encoding();
if (!ast->body.root) {
rb_ast_dispose(ast);
return Qfalse;
}
process_sflag(&opt->sflag);
opt->xflag = 0;
if (dump & DUMP_BIT(syntax)) {
printf("Syntax OK\n");
dump &= ~DUMP_BIT(syntax);
if (!dump) return Qtrue;
}
if (opt->do_loop) {
rb_define_global_function("sub", rb_f_sub, -1);
rb_define_global_function("gsub", rb_f_gsub, -1);
rb_define_global_function("chop", rb_f_chop, 0);
rb_define_global_function("chomp", rb_f_chomp, -1);
}
if (dump & (DUMP_BIT(parsetree)|DUMP_BIT(parsetree_with_comment))) {
rb_io_write(rb_stdout, rb_parser_dump_tree(ast->body.root, dump & DUMP_BIT(parsetree_with_comment)));
rb_io_flush(rb_stdout);
dump &= ~DUMP_BIT(parsetree)&~DUMP_BIT(parsetree_with_comment);
if (!dump) {
rb_ast_dispose(ast);
return Qtrue;
}
}
{
VALUE path = Qnil;
if (!opt->e_script && strcmp(opt->script, "-")) {
path = rb_realpath_internal(Qnil, script_name, 1);
#if UTF8_PATH
if (uenc != lenc) {
path = str_conv_enc(path, uenc, lenc);
}
#endif
if (!ENCODING_GET(path)) { /* ASCII-8BIT */
rb_enc_copy(path, opt->script_name);
}
}
rb_binding_t *toplevel_binding;
GetBindingPtr(rb_const_get(rb_cObject, rb_intern("TOPLEVEL_BINDING")),
toplevel_binding);
const struct rb_block *base_block = toplevel_context(toplevel_binding);
iseq = rb_iseq_new_main(&ast->body, opt->script_name, path, vm_block_iseq(base_block));
rb_ast_dispose(ast);
}
if (dump & DUMP_BIT(insns)) {
rb_io_write(rb_stdout, rb_iseq_disasm((const rb_iseq_t *)iseq));
rb_io_flush(rb_stdout);
dump &= ~DUMP_BIT(insns);
if (!dump) return Qtrue;
}
if (opt->dump & dump_exit_bits) return Qtrue;
rb_define_readonly_boolean("$-p", opt->do_print);
rb_define_readonly_boolean("$-l", opt->do_line);
rb_define_readonly_boolean("$-a", opt->do_split);
if ((rb_e_script = opt->e_script) != 0) {
rb_gc_register_mark_object(opt->e_script);
}
{
rb_execution_context_t *ec = GET_EC();
if (opt->e_script) {
/* -e */
rb_exec_event_hook_script_compiled(ec, iseq, opt->e_script);
}
else {
/* file */
rb_exec_event_hook_script_compiled(ec, iseq, Qnil);
}
}
return (VALUE)iseq;
}
#ifndef DOSISH
static void
warn_cr_in_shebang(const char *str, long len)
{
if (str[len-1] == '\n' && str[len-2] == '\r') {
rb_warn("shebang line ending with \\r may cause problems");
}
}
#else
#define warn_cr_in_shebang(str, len) (void)0
#endif
struct load_file_arg {
VALUE parser;
VALUE fname;
int script;
ruby_cmdline_options_t *opt;
VALUE f;
};
static VALUE
load_file_internal(VALUE argp_v)
{
struct load_file_arg *argp = (struct load_file_arg *)argp_v;
VALUE parser = argp->parser;
VALUE orig_fname = argp->fname;
int script = argp->script;
ruby_cmdline_options_t *opt = argp->opt;
VALUE f = argp->f;
int line_start = 1;
rb_ast_t *ast = 0;
rb_encoding *enc;
ID set_encoding;
CONST_ID(set_encoding, "set_encoding");
if (script) {
VALUE c = 1; /* something not nil */
VALUE line;
char *p, *str;
long len;
int no_src_enc = !opt->src.enc.name;
int no_ext_enc = !opt->ext.enc.name;
int no_int_enc = !opt->intern.enc.name;
enc = rb_ascii8bit_encoding();
rb_funcall(f, set_encoding, 1, rb_enc_from_encoding(enc));
if (opt->xflag) {
line_start--;
search_shebang:
while (!NIL_P(line = rb_io_gets(f))) {
line_start++;
RSTRING_GETMEM(line, str, len);
if (len > 2 && str[0] == '#' && str[1] == '!') {
if (line_start == 1) warn_cr_in_shebang(str, len);
if ((p = strstr(str+2, ruby_engine)) != 0) {
goto start_read;
}
}
}
rb_loaderror("no Ruby script found in input");
}
c = rb_io_getbyte(f);
if (c == INT2FIX('#')) {
c = rb_io_getbyte(f);
if (c == INT2FIX('!') && !NIL_P(line = rb_io_gets(f))) {
RSTRING_GETMEM(line, str, len);
warn_cr_in_shebang(str, len);
if ((p = strstr(str, ruby_engine)) == 0) {
/* not ruby script, assume -x flag */
goto search_shebang;
}
start_read:
str += len - 1;
if (*str == '\n') *str-- = '\0';
if (*str == '\r') *str-- = '\0';
/* ruby_engine should not contain a space */
if ((p = strstr(p, " -")) != 0) {
opt->warning = 0;
moreswitches(p + 1, opt, 0);
}
/* push back shebang for pragma may exist in next line */
rb_io_ungetbyte(f, rb_str_new2("!\n"));
}
else if (!NIL_P(c)) {
rb_io_ungetbyte(f, c);
}
rb_io_ungetbyte(f, INT2FIX('#'));
if (no_src_enc && opt->src.enc.name) {
opt->src.enc.index = opt_enc_index(opt->src.enc.name);
src_encoding_index = opt->src.enc.index;
}
if (no_ext_enc && opt->ext.enc.name) {
opt->ext.enc.index = opt_enc_index(opt->ext.enc.name);
}
if (no_int_enc && opt->intern.enc.name) {
opt->intern.enc.index = opt_enc_index(opt->intern.enc.name);
}
}
else if (!NIL_P(c)) {
rb_io_ungetbyte(f, c);
}
if (NIL_P(c)) {
argp->f = f = Qnil;
}
ruby_opt_init(opt);
}
if (opt->src.enc.index >= 0) {
enc = rb_enc_from_index(opt->src.enc.index);
}
else if (f == rb_stdin) {
enc = rb_locale_encoding();
}
else {
enc = rb_utf8_encoding();
}
rb_parser_set_options(parser, opt->do_print, opt->do_loop,
opt->do_line, opt->do_split);
rb_warning_category_update(opt->warn.mask, opt->warn.set);
if (NIL_P(f)) {
f = rb_str_new(0, 0);
rb_enc_associate(f, enc);
return (VALUE)rb_parser_compile_string_path(parser, orig_fname, f, line_start);
}
rb_funcall(f, set_encoding, 2, rb_enc_from_encoding(enc), rb_str_new_cstr("-"));
ast = rb_parser_compile_file_path(parser, orig_fname, f, line_start);
rb_funcall(f, set_encoding, 1, rb_parser_encoding(parser));
if (script && rb_parser_end_seen_p(parser)) {
/*
* DATA is a File that contains the data section of the executed file.
* To create a data section use <tt>__END__</tt>:
*
* $ cat t.rb
* puts DATA.gets
* __END__
* hello world!
*
* $ ruby t.rb
* hello world!
*/
rb_define_global_const("DATA", f);
argp->f = Qnil;
}
return (VALUE)ast;
}
static VALUE
open_load_file(VALUE fname_v, int *xflag)
{
const char *fname = (fname_v = rb_str_encode_ospath(fname_v),
StringValueCStr(fname_v));
long flen = RSTRING_LEN(fname_v);
VALUE f;
int e;
if (flen == 1 && fname[0] == '-') {
f = rb_stdin;
}
else {
int fd;
/* open(2) may block if fname is point to FIFO and it's empty. Let's
use O_NONBLOCK. */
#if defined O_NONBLOCK && HAVE_FCNTL && !(O_NONBLOCK & O_ACCMODE)
/* TODO: fix conflicting O_NONBLOCK in ruby/win32.h */
# define MODE_TO_LOAD (O_RDONLY | O_NONBLOCK)
#elif defined O_NDELAY && HAVE_FCNTL && !(O_NDELAY & O_ACCMODE)
# define MODE_TO_LOAD (O_RDONLY | O_NDELAY)
#else
# define MODE_TO_LOAD (O_RDONLY)
#endif
int mode = MODE_TO_LOAD;
#if defined DOSISH || defined __CYGWIN__
# define isdirsep(x) ((x) == '/' || (x) == '\\')
{
static const char exeext[] = ".exe";
enum {extlen = sizeof(exeext)-1};
if (flen > extlen && !isdirsep(fname[flen-extlen-1]) &&
STRNCASECMP(fname+flen-extlen, exeext, extlen) == 0) {
mode |= O_BINARY;
*xflag = 1;
}
}
#endif
if ((fd = rb_cloexec_open(fname, mode, 0)) < 0) {
e = errno;
if (!rb_gc_for_fd(e)) {
rb_load_fail(fname_v, strerror(e));
}
if ((fd = rb_cloexec_open(fname, mode, 0)) < 0) {
rb_load_fail(fname_v, strerror(errno));
}
}
rb_update_max_fd(fd);
#if defined HAVE_FCNTL && MODE_TO_LOAD != O_RDONLY
/* disabling O_NONBLOCK */
if (fcntl(fd, F_SETFL, 0) < 0) {
e = errno;
(void)close(fd);
rb_load_fail(fname_v, strerror(e));
}
#endif
e = ruby_is_fd_loadable(fd);
if (!e) {
e = errno;
(void)close(fd);
rb_load_fail(fname_v, strerror(e));
}
f = rb_io_fdopen(fd, mode, fname);
if (e < 0) {
/*
We need to wait if FIFO is empty. It's FIFO's semantics.
rb_thread_wait_fd() release GVL. So, it's safe.
*/
rb_thread_wait_fd(fd);
}
}
return f;
}
static VALUE
restore_load_file(VALUE arg)
{
struct load_file_arg *argp = (struct load_file_arg *)arg;
VALUE f = argp->f;
if (!NIL_P(f) && f != rb_stdin) {
rb_io_close(f);
}
return Qnil;
}
static rb_ast_t *
load_file(VALUE parser, VALUE fname, VALUE f, int script, ruby_cmdline_options_t *opt)
{
struct load_file_arg arg;
arg.parser = parser;
arg.fname = fname;
arg.script = script;
arg.opt = opt;
arg.f = f;
return (rb_ast_t *)rb_ensure(load_file_internal, (VALUE)&arg,
restore_load_file, (VALUE)&arg);
}
void *
rb_load_file(const char *fname)
{
VALUE fname_v = rb_str_new_cstr(fname);
return rb_load_file_str(fname_v);
}
void *
rb_load_file_str(VALUE fname_v)
{
return rb_parser_load_file(rb_parser_new(), fname_v);
}
void *
rb_parser_load_file(VALUE parser, VALUE fname_v)
{
ruby_cmdline_options_t opt;
VALUE f = open_load_file(fname_v, &cmdline_options_init(&opt)->xflag);
return load_file(parser, fname_v, f, 0, &opt);
}
/*
* call-seq:
* Process.argv0 -> frozen_string
*
* Returns the name of the script being executed. The value is not
* affected by assigning a new value to $0.
*
* This method first appeared in Ruby 2.1 to serve as a global
* variable free means to get the script name.
*/
static VALUE
proc_argv0(VALUE process)
{
return rb_orig_progname;
}
static VALUE ruby_setproctitle(VALUE title);
/*
* call-seq:
* Process.setproctitle(string) -> string
*
* Sets the process title that appears on the ps(1) command. Not
* necessarily effective on all platforms. No exception will be
* raised regardless of the result, nor will NotImplementedError be
* raised even if the platform does not support the feature.
*
* Calling this method does not affect the value of $0.
*
* Process.setproctitle('myapp: worker #%d' % worker_id)
*
* This method first appeared in Ruby 2.1 to serve as a global
* variable free means to change the process title.
*/
static VALUE
proc_setproctitle(VALUE process, VALUE title)
{
return ruby_setproctitle(title);
}
static VALUE
ruby_setproctitle(VALUE title)
{
const char *ptr = StringValueCStr(title);
setproctitle("%.*s", RSTRING_LENINT(title), ptr);
return title;
}
static void
set_arg0(VALUE val, ID id, VALUE *_)
{
if (origarg.argv == 0)
rb_raise(rb_eRuntimeError, "$0 not initialized");
rb_progname = rb_str_new_frozen(ruby_setproctitle(val));
}
static inline VALUE
external_str_new_cstr(const char *p)
{
#if UTF8_PATH
VALUE str = rb_utf8_str_new_cstr(p);
str = str_conv_enc(str, NULL, rb_default_external_encoding());
return str;
#else
return rb_external_str_new_cstr(p);
#endif
}
/*! Sets the current script name to this value.
*
* This is similar to <code>$0 = name</code> in Ruby level but also affects
* <code>Method#location</code> and others.
*/
void
ruby_script(const char *name)
{
if (name) {
rb_orig_progname = rb_progname = external_str_new_cstr(name);
rb_vm_set_progname(rb_progname);
}
}
/*! Sets the current script name to this value.
*
* Same as ruby_script() but accepts a VALUE.
*/
void
ruby_set_script_name(VALUE name)
{
rb_orig_progname = rb_progname = rb_str_dup(name);
rb_vm_set_progname(rb_progname);
}
static void
init_ids(ruby_cmdline_options_t *opt)
{
rb_uid_t uid = getuid();
rb_uid_t euid = geteuid();
rb_gid_t gid = getgid();
rb_gid_t egid = getegid();
if (uid != euid) opt->setids |= 1;
if (egid != gid) opt->setids |= 2;
}
#undef forbid_setid
static void
forbid_setid(const char *s, const ruby_cmdline_options_t *opt)
{
if (opt->setids & 1)
rb_raise(rb_eSecurityError, "no %s allowed while running setuid", s);
if (opt->setids & 2)
rb_raise(rb_eSecurityError, "no %s allowed while running setgid", s);
}
static void
verbose_setter(VALUE val, ID id, VALUE *variable)
{
*variable = RTEST(val) ? Qtrue : val;
}
static VALUE
opt_W_getter(ID id, VALUE *variable)
{
switch (*variable) {
case Qnil:
return INT2FIX(0);
case Qfalse:
return INT2FIX(1);
case Qtrue:
return INT2FIX(2);
default:
return Qnil;
}
}
/*! Defines built-in variables */
void
ruby_prog_init(void)
{
rb_define_hooked_variable("$VERBOSE", &ruby_verbose, 0, verbose_setter);
rb_define_hooked_variable("$-v", &ruby_verbose, 0, verbose_setter);
rb_define_hooked_variable("$-w", &ruby_verbose, 0, verbose_setter);
rb_define_hooked_variable("$-W", &ruby_verbose, opt_W_getter, rb_gvar_readonly_setter);
rb_define_variable("$DEBUG", &ruby_debug);
rb_define_variable("$-d", &ruby_debug);
rb_define_hooked_variable("$0", &rb_progname, 0, set_arg0);
rb_define_hooked_variable("$PROGRAM_NAME", &rb_progname, 0, set_arg0);
rb_define_module_function(rb_mProcess, "argv0", proc_argv0, 0);
rb_define_module_function(rb_mProcess, "setproctitle", proc_setproctitle, 1);
/*
* ARGV contains the command line arguments used to run ruby.
*
* A library like OptionParser can be used to process command-line
* arguments.
*/
rb_define_global_const("ARGV", rb_argv);
}
void
ruby_set_argv(int argc, char **argv)
{
int i;
VALUE av = rb_argv;
#if defined(USE_DLN_A_OUT)
if (origarg.argc > 0 && origarg.argv)
dln_argv0 = origarg.argv[0];
else if (argc > 0 && argv)
dln_argv0 = argv[0];
#endif
rb_ary_clear(av);
for (i = 0; i < argc; i++) {
VALUE arg = external_str_new_cstr(argv[i]);
OBJ_FREEZE(arg);
rb_ary_push(av, arg);
}
}
void *
ruby_process_options(int argc, char **argv)
{
ruby_cmdline_options_t opt;
VALUE iseq;
const char *script_name = (argc > 0 && argv[0]) ? argv[0] : ruby_engine;
if (!origarg.argv || origarg.argc <= 0) {
origarg.argc = argc;
origarg.argv = argv;
}
ruby_script(script_name); /* for the time being */
rb_argv0 = rb_str_new4(rb_progname);
rb_gc_register_mark_object(rb_argv0);
iseq = process_options(argc, argv, cmdline_options_init(&opt));
#ifndef HAVE_SETPROCTITLE
ruby_init_setproctitle(argc, argv);
#endif
return (void*)(struct RData*)iseq;
}
static void
fill_standard_fds(void)
{
int f0, f1, f2, fds[2];
struct stat buf;
f0 = fstat(0, &buf) == -1 && errno == EBADF;
f1 = fstat(1, &buf) == -1 && errno == EBADF;
f2 = fstat(2, &buf) == -1 && errno == EBADF;
if (f0) {
if (pipe(fds) == 0) {
close(fds[1]);
if (fds[0] != 0) {
dup2(fds[0], 0);
close(fds[0]);
}
}
}
if (f1 || f2) {
if (pipe(fds) == 0) {
close(fds[0]);
if (f1 && fds[1] != 1)
dup2(fds[1], 1);
if (f2 && fds[1] != 2)
dup2(fds[1], 2);
if (fds[1] != 1 && fds[1] != 2)
close(fds[1]);
}
}
}
/*! Initializes the process for libruby.
*
* This function assumes this process is ruby(1) and it has just started.
* Usually programs that embed CRuby interpreter may not call this function,
* and may do their own initialization.
* argc and argv cannot be NULL.
*/
void
ruby_sysinit(int *argc, char ***argv)
{
#if defined(_WIN32)
rb_w32_sysinit(argc, argv);
#endif
if (*argc >= 0 && *argv) {
origarg.argc = *argc;
origarg.argv = *argv;
#if defined(USE_DLN_A_OUT)
dln_argv0 = origarg.argv[0];
#endif
}
fill_standard_fds();
}
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