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ruby.c
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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
#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/cmdlineopt.h"
#include "internal/cont.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/thread.h"
#include "internal/ruby_parser.h"
#include "internal/variable.h"
#include "ruby/encoding.h"
#include "ruby/thread.h"
#include "ruby/util.h"
#include "ruby/version.h"
#include "ruby/internal/error.h"
#if USE_MMTK
#include "internal/mmtk_support.h"
#endif
#define singlebit_only_p(x) !((x) & ((x)-1))
STATIC_ASSERT(Qnil_1bit_from_Qfalse, singlebit_only_p(Qnil^Qfalse));
STATIC_ASSERT(Qundef_1bit_from_Qnil, singlebit_only_p(Qundef^Qnil));
#ifndef MAXPATHLEN
# define MAXPATHLEN 1024
#endif
#ifndef O_ACCMODE
# define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR)
#endif
void Init_ruby_description(ruby_cmdline_options_t *opt);
#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(error_highlight) \
SEP \
X(did_you_mean) \
SEP \
X(syntax_suggest) \
SEP \
X(rubyopt) \
SEP \
X(frozen_string_literal) \
SEP \
X(yjit) \
SEP \
X(mmtk) \
/* 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),
DEFINE_FEATURE(frozen_string_literal_set),
feature_debug_flag_first,
DEFINE_FEATURE(jit) = feature_yjit,
feature_jit_mask = FEATURE_BIT(yjit),
feature_debug_flag_begin = feature_debug_flag_first - 1,
EACH_DEBUG_FEATURES(DEFINE_DEBUG_FEATURE, COMMA),
feature_flag_count
};
#define MULTI_BITS_P(bits) ((bits) & ((bits) - 1))
#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(insns) \
/* END OF DUMPS */
enum dump_flag_bits {
dump_version_v,
dump_opt_error_tolerant,
dump_opt_comment,
dump_opt_optimize,
EACH_DUMPS(DEFINE_DUMP, COMMA),
dump_exit_bits = (DUMP_BIT(yydebug) | DUMP_BIT(syntax) |
DUMP_BIT(parsetree) | DUMP_BIT(insns)),
dump_optional_bits = (DUMP_BIT(opt_error_tolerant) |
DUMP_BIT(opt_comment) |
DUMP_BIT(opt_optimize))
};
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 & FEATURE_BIT(bits))
#define FEATURE_USED_P(feat, bits) ((feat).mask & FEATURE_BIT(bits))
#define FEATURE_SET_BITS(feat) ((feat).set & (feat).mask)
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(frozen_string_literal_set)
| 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(frozen_string_literal_set)
& ~feature_jit_mask
& ~FEATURE_BIT(mmtk)
)
};
#define BACKTRACE_LENGTH_LIMIT_VALID_P(n) ((n) >= -1)
#define OPT_BACKTRACE_LENGTH_LIMIT_VALID_P(opt) \
BACKTRACE_LENGTH_LIMIT_VALID_P((opt)->backtrace_length_limit)
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;
#if defined(YJIT_FORCE_ENABLE)
opt->features.set |= FEATURE_BIT(yjit);
#endif
#ifdef MMTK_FORCE_ENABLE /* to use with: ./configure cppflags="-DMMTK_FORCE_ENABLE" */
opt->features.set |= FEATURE_BIT(mmtk);
#endif
opt->dump |= DUMP_BIT(opt_optimize);
opt->backtrace_length_limit = LONG_MIN;
return opt;
}
static VALUE 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[] = "";
#define USAGE_INDENT " " /* macro for concatenation */
static void
show_usage_part(const char *str, const unsigned int namelen,
const char *str2, const unsigned int secondlen,
const char *desc,
int help, int highlight, unsigned int w, int columns)
{
static const int indent_width = (int)rb_strlen_lit(USAGE_INDENT);
const char *sb = highlight ? esc_bold : esc_none;
const char *se = highlight ? esc_reset : esc_none;
unsigned int desclen = (unsigned int)strcspn(desc, "\n");
if (!help && desclen > 0 && strchr(".;:", desc[desclen-1])) --desclen;
if (help && (namelen + 1 > w) && /* a padding space */
(int)(namelen + secondlen + indent_width) >= columns) {
printf(USAGE_INDENT "%s" "%.*s" "%s\n", sb, namelen, str, se);
if (secondlen > 0) {
const int second_end = secondlen;
int n = 0;
if (str2[n] == ',') n++;
if (str2[n] == ' ') n++;
printf(USAGE_INDENT "%s" "%.*s" "%s\n", sb, second_end-n, str2+n, se);
}
printf("%-*s%.*s\n", w + indent_width, USAGE_INDENT, desclen, desc);
}
else {
const int wrap = help && namelen + secondlen >= w;
printf(USAGE_INDENT "%s%.*s%-*.*s%s%-*s%.*s\n", sb, namelen, str,
(wrap ? 0 : w - namelen),
(help ? secondlen : 0), str2, se,
(wrap ? (int)(w + rb_strlen_lit("\n" USAGE_INDENT)) : 0),
(wrap ? "\n" USAGE_INDENT : ""),
desclen, desc);
}
if (help) {
while (desc[desclen]) {
desc += desclen + rb_strlen_lit("\n");
desclen = (unsigned int)strcspn(desc, "\n");
printf("%-*s%.*s\n", w + indent_width, USAGE_INDENT, desclen, desc);
}
}
}
static void
show_usage_line(const struct ruby_opt_message *m,
int help, int highlight, unsigned int w, int columns)
{
const char *str = m->str;
const unsigned int namelen = m->namelen, secondlen = m->secondlen;
const char *desc = str + namelen + secondlen;
show_usage_part(str, namelen - 1, str + namelen, secondlen - 1, desc,
help, highlight, w, columns);
}
void
ruby_show_usage_line(const char *name, const char *secondary, const char *description,
int help, int highlight, unsigned int width, int columns)
{
unsigned int namelen = (unsigned int)strlen(name);
unsigned int secondlen = (secondary ? (unsigned int)strlen(secondary) : 0);
show_usage_part(name, namelen, secondary, secondlen,
description, help, highlight, width, columns);
}
static void
usage(const char *name, int help, int highlight, int columns)
{
#define M(shortopt, longopt, desc) RUBY_OPT_MESSAGE(shortopt, longopt, desc)
#if USE_YJIT
# define PLATFORM_JIT_OPTION "--yjit"
#endif
/* This message really ought to be max 23 lines.
* Removed -h because the user already knows that option. Others? */
static const struct ruby_opt_message usage_msg[] = {
M("-0[octal]", "", "Set input record separator ($/):\n"
"-0 for \\0; -00 for paragraph mode; -0777 for slurp mode."),
M("-a", "", "Split each input line ($_) into fields ($F)."),
M("-c", "", "Check syntax (no execution)."),
M("-Cdirpath", "", "Execute program in specified directory."),
M("-d", ", --debug", "Set debugging flag ($DEBUG) to true."),
M("-e 'code'", "", "Execute given Ruby code; multiple -e allowed."),
M("-Eex[:in]", ", --encoding=ex[:in]", "Set default external and internal encodings."),
M("-Fpattern", "", "Set input field separator ($;); used with -a."),
M("-i[extension]", "", "Set ARGF in-place mode;\n"
"create backup files with given extension."),
M("-Idirpath", "", "Prepend specified directory to load paths ($LOAD_PATH);\n"
"relative paths are expanded; multiple -I are allowed."),
M("-l", "", "Set output record separator ($\\) to $/;\n"
"used for line-oriented output."),
M("-n", "", "Run program in gets loop."),
M("-p", "", "Like -n, with printing added."),
M("-rlibrary", "", "Require the given library."),
M("-s", "", "Define global variables using switches following program path."),
M("-S", "", "Search directories found in the PATH environment variable."),
M("-v", "", "Print version; set $VERBOSE to true."),
M("-w", "", "Synonym for -W1."),
M("-W[level=2|:category]", "", "Set warning flag ($-W):\n"
"0 for silent; 1 for moderate; 2 for verbose."),
M("-x[dirpath]", "", "Execute Ruby code starting from a #!ruby line."),
#if USE_YJIT
M("--jit", "", "Enable JIT for the platform; same as " PLATFORM_JIT_OPTION "."),
#endif
#if USE_YJIT
M("--yjit", "", "Enable in-process JIT compiler."),
#endif
#if USE_MMTK
M("--mmtk", "", "use MMTk for garbage collection (experimental)"),
#endif
M("-h", "", "Print this help message; use --help for longer message."),
};
STATIC_ASSERT(usage_msg_size, numberof(usage_msg) < 26);
static const struct ruby_opt_message help_msg[] = {
M("--backtrace-limit=num", "", "Set backtrace limit."),
M("--copyright", "", "Print Ruby copyright."),
M("--crash-report=template", "", "Set template for crash report file."),
M("--disable=features", "", "Disable features; see list below."),
M("--dump=items", "", "Dump items; see list below."),
M("--enable=features", "", "Enable features; see list below."),
M("--external-encoding=encoding", "", "Set default external encoding."),
M("--help", "", "Print long help message; use -h for short message."),
M("--internal-encoding=encoding", "", "Set default internal encoding."),
M("--parser=parser", "", "Set Ruby parser: parse.y or prism."),
M("--verbose", "", "Set $VERBOSE to true; ignore input from $stdin."),
M("--version", "", "Print Ruby version."),
M("-y", ", --yydebug", "Print parser log; backward compatibility not guaranteed."),
};
static const struct ruby_opt_message dumps[] = {
M("insns", "", "Instruction sequences."),
M("yydebug", "", "yydebug of yacc parser generator."),
M("parsetree", "", "Abstract syntax tree (AST)."),
M("-optimize", "", "Disable optimization (affects insns)."),
M("+error-tolerant", "", "Error-tolerant parsing (affects yydebug, parsetree)."),
M("+comment", "", "Add comments to AST (affects parsetree with --parser=parse.y)."),
};
static const struct ruby_opt_message features[] = {
M("gems", "", "Rubygems (only for debugging, default: "DEFAULT_RUBYGEMS_ENABLED")."),
M("error_highlight", "", "error_highlight (default: "DEFAULT_RUBYGEMS_ENABLED")."),
M("did_you_mean", "", "did_you_mean (default: "DEFAULT_RUBYGEMS_ENABLED")."),
M("syntax_suggest", "", "syntax_suggest (default: "DEFAULT_RUBYGEMS_ENABLED")."),
M("rubyopt", "", "RUBYOPT environment variable (default: enabled)."),
M("frozen-string-literal", "", "Freeze all string literals (default: disabled)."),
#if USE_YJIT
M("yjit", "", "In-process JIT compiler (default: disabled)."),
#endif
#if USE_MMTK
M("mmtk", "", "MMTk garbage collection (default: disabled)"),
#endif
};
static const struct ruby_opt_message warn_categories[] = {
M("deprecated", "", "Deprecated features."),
M("experimental", "", "Experimental features."),
M("performance", "", "Performance issues."),
M("strict_unused_block", "", "Warning unused block strictly"),
};
#if USE_MMTK
static const struct ruby_opt_message mmtk_options[] = {
M("--mmtk-plan=name", "", "MMTk garbage collection plan to use (default: " MMTK_DEFAULT_PLAN ")"),
};
#endif
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), help, highlight, w, columns)
printf("%sUsage:%s %s [options] [--] [filepath] [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]);
#if USE_YJIT
printf("%s""YJIT options:%s\n", sb, se);
rb_yjit_show_usage(help, highlight, w, columns);
#endif
#if USE_MMTK
printf("%s""MMTk options (experimental):%s\n", sb, se);
for (i = 0; i < numberof(mmtk_options); ++i)
SHOW(mmtk_options[i]);
#endif
}
#define rubylib_path_new rb_str_new
static void
ruby_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;
#ifdef __CYGWIN__
char rubylib[FILENAME_MAX];
VALUE buf = 0;
# define is_path_sep(c) ((c) == sep || (c) == ';')
#else
# define is_path_sep(c) ((c) == sep)
#endif
if (path == 0) return;
p = path;
while (*p) {
long len;
while (is_path_sep(*p))
p++;
if (!*p) break;
for (s = p; *s && !is_path_sep(*s); s = CharNext(s));
len = s - p;
#undef is_path_sep
#ifdef __CYGWIN__
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;
len = strlen(p);
}
#endif
rb_ary_push(load_path, (*filter)(rubylib_path_new(p, len)));
p = s;
}
}
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
# undef chdir
# define chdir rb_w32_uchdir
# 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 ret;
DWORD len = 32;
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(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(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;
}
else {
baselen = 0;
}
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(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_hidden_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 int
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);
}
return -1;
}
return sflag;
}
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;
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;
long backtrace_length_limit = opt->backtrace_length_limit;
const char *crash_report = opt->crash_report;
while (ISSPACE(*s)) s++;
if (!*s) return;
opt->src.enc.name = opt->ext.enc.name = opt->intern.enc.name = 0;
const int hyphen = *s != '-';
argstr = rb_str_tmp_new((len = strlen(s)) + hyphen);
argary = rb_str_tmp_new(0);
p = RSTRING_PTR(argstr);
if (hyphen) *p = '-';
memcpy(p + hyphen, 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;
}
}
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 (BACKTRACE_LENGTH_LIMIT_VALID_P(backtrace_length_limit)) {
opt->backtrace_length_limit = backtrace_length_limit;
}
if (crash_report) {
opt->crash_report = crash_report;
}
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) return 1;
++name;
++str;
}
if (*str != '-' && *str != '_') return 0;
while (ISALNUM(*name)) name++;
if (*name != '-' && *name != '_') return 0;
if (!*++name) return 1;
++str;
if (--len == 0) return 1;
}
}
#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, ", ");