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-rw-r--r--ruby_1_8_6/dir.c2002
1 files changed, 2002 insertions, 0 deletions
diff --git a/ruby_1_8_6/dir.c b/ruby_1_8_6/dir.c
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+++ b/ruby_1_8_6/dir.c
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+/**********************************************************************
+
+ dir.c -
+
+ $Author$
+ $Date$
+ created at: Wed Jan 5 09:51:01 JST 1994
+
+ Copyright (C) 1993-2003 Yukihiro Matsumoto
+ Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
+ Copyright (C) 2000 Information-technology Promotion Agency, Japan
+
+**********************************************************************/
+
+#include "ruby.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#if defined HAVE_DIRENT_H && !defined _WIN32
+# include <dirent.h>
+# define NAMLEN(dirent) strlen((dirent)->d_name)
+#elif defined HAVE_DIRECT_H && !defined _WIN32
+# include <direct.h>
+# define NAMLEN(dirent) strlen((dirent)->d_name)
+#else
+# define dirent direct
+# if !defined __NeXT__
+# define NAMLEN(dirent) (dirent)->d_namlen
+# else
+# /* On some versions of NextStep, d_namlen is always zero, so avoid it. */
+# define NAMLEN(dirent) strlen((dirent)->d_name)
+# endif
+# if HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif
+# if HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif
+# if HAVE_NDIR_H
+# include <ndir.h>
+# endif
+# ifdef _WIN32
+# include "win32/dir.h"
+# endif
+#endif
+
+#include <errno.h>
+
+#ifndef HAVE_STDLIB_H
+char *getenv();
+#endif
+
+#ifndef HAVE_STRING_H
+char *strchr _((char*,char));
+#endif
+
+#include <ctype.h>
+
+#include "util.h"
+
+#if !defined HAVE_LSTAT && !defined lstat
+#define lstat stat
+#endif
+
+#ifndef CASEFOLD_FILESYSTEM
+# if defined DOSISH || defined __VMS
+# define CASEFOLD_FILESYSTEM 1
+# else
+# define CASEFOLD_FILESYSTEM 0
+# endif
+#endif
+
+#define FNM_NOESCAPE 0x01
+#define FNM_PATHNAME 0x02
+#define FNM_DOTMATCH 0x04
+#define FNM_CASEFOLD 0x08
+#if CASEFOLD_FILESYSTEM
+#define FNM_SYSCASE FNM_CASEFOLD
+#else
+#define FNM_SYSCASE 0
+#endif
+
+#define FNM_NOMATCH 1
+#define FNM_ERROR 2
+
+#define downcase(c) (nocase && ISUPPER(c) ? tolower(c) : (c))
+#define compare(c1, c2) (((unsigned char)(c1)) - ((unsigned char)(c2)))
+
+/* caution: in case *p == '\0'
+ Next(p) == p + 1 in single byte environment
+ Next(p) == p in multi byte environment
+*/
+#if defined(CharNext)
+# define Next(p) CharNext(p)
+#elif defined(DJGPP)
+# define Next(p) ((p) + mblen(p, RUBY_MBCHAR_MAXSIZE))
+#elif defined(__EMX__)
+# define Next(p) ((p) + emx_mblen(p))
+static inline int
+emx_mblen(const char *p)
+{
+ int n = mblen(p, RUBY_MBCHAR_MAXSIZE);
+ return (n < 0) ? 1 : n;
+}
+#endif
+
+#ifndef Next /* single byte environment */
+# define Next(p) ((p) + 1)
+# define Inc(p) (++(p))
+# define Compare(p1, p2) (compare(downcase(*(p1)), downcase(*(p2))))
+#else /* multi byte environment */
+# define Inc(p) ((p) = Next(p))
+# define Compare(p1, p2) (CompareImpl(p1, p2, nocase))
+static int
+CompareImpl(const char *p1, const char *p2, int nocase)
+{
+ const int len1 = Next(p1) - p1;
+ const int len2 = Next(p2) - p2;
+#ifdef _WIN32
+ char buf1[10], buf2[10]; /* large enough? */
+#endif
+
+ if (len1 < 0 || len2 < 0) {
+ rb_fatal("CompareImpl: negative len");
+ }
+
+ if (len1 == 0) return len2;
+ if (len2 == 0) return -len1;
+
+#ifdef _WIN32
+ if (nocase && rb_w32_iswinnt()) {
+ if (len1 > 1) {
+ if (len1 >= sizeof(buf1)) {
+ rb_fatal("CompareImpl: too large len");
+ }
+ memcpy(buf1, p1, len1);
+ buf1[len1] = '\0';
+ CharLower(buf1);
+ p1 = buf1; /* trick */
+ }
+ if (len2 > 1) {
+ if (len2 >= sizeof(buf2)) {
+ rb_fatal("CompareImpl: too large len");
+ }
+ memcpy(buf2, p2, len2);
+ buf2[len2] = '\0';
+ CharLower(buf2);
+ p2 = buf2; /* trick */
+ }
+ }
+#endif
+ if (len1 == 1)
+ if (len2 == 1)
+ return compare(downcase(*p1), downcase(*p2));
+ else {
+ const int ret = compare(downcase(*p1), *p2);
+ return ret ? ret : -1;
+ }
+ else
+ if (len2 == 1) {
+ const int ret = compare(*p1, downcase(*p2));
+ return ret ? ret : 1;
+ }
+ else {
+ const int ret = memcmp(p1, p2, len1 < len2 ? len1 : len2);
+ return ret ? ret : len1 - len2;
+ }
+}
+#endif /* environment */
+
+static char *
+bracket(p, s, flags)
+ const char *p; /* pattern (next to '[') */
+ const char *s; /* string */
+ int flags;
+{
+ const int nocase = flags & FNM_CASEFOLD;
+ const int escape = !(flags & FNM_NOESCAPE);
+
+ int ok = 0, not = 0;
+
+ if (*p == '!' || *p == '^') {
+ not = 1;
+ p++;
+ }
+
+ while (*p != ']') {
+ const char *t1 = p;
+ if (escape && *t1 == '\\')
+ t1++;
+ if (!*t1)
+ return NULL;
+ p = Next(t1);
+ if (p[0] == '-' && p[1] != ']') {
+ const char *t2 = p + 1;
+ if (escape && *t2 == '\\')
+ t2++;
+ if (!*t2)
+ return NULL;
+ p = Next(t2);
+ if (!ok && Compare(t1, s) <= 0 && Compare(s, t2) <= 0)
+ ok = 1;
+ }
+ else
+ if (!ok && Compare(t1, s) == 0)
+ ok = 1;
+ }
+
+ return ok == not ? NULL : (char *)p + 1;
+}
+
+/* If FNM_PATHNAME is set, only path element will be matched. (upto '/' or '\0')
+ Otherwise, entire string will be matched.
+ End marker itself won't be compared.
+ And if function succeeds, *pcur reaches end marker.
+*/
+#define UNESCAPE(p) (escape && *(p) == '\\' ? (p) + 1 : (p))
+#define ISEND(p) (!*(p) || (pathname && *(p) == '/'))
+#define RETURN(val) return *pcur = p, *scur = s, (val);
+
+static int
+fnmatch_helper(pcur, scur, flags)
+ const char **pcur; /* pattern */
+ const char **scur; /* string */
+ int flags;
+{
+ const int period = !(flags & FNM_DOTMATCH);
+ const int pathname = flags & FNM_PATHNAME;
+ const int escape = !(flags & FNM_NOESCAPE);
+ const int nocase = flags & FNM_CASEFOLD;
+
+ const char *ptmp = 0;
+ const char *stmp = 0;
+
+ const char *p = *pcur;
+ const char *s = *scur;
+
+ if (period && *s == '.' && *UNESCAPE(p) != '.') /* leading period */
+ RETURN(FNM_NOMATCH);
+
+ while (1) {
+ switch (*p) {
+ case '*':
+ do { p++; } while (*p == '*');
+ if (ISEND(UNESCAPE(p))) {
+ p = UNESCAPE(p);
+ RETURN(0);
+ }
+ if (ISEND(s))
+ RETURN(FNM_NOMATCH);
+ ptmp = p;
+ stmp = s;
+ continue;
+
+ case '?':
+ if (ISEND(s))
+ RETURN(FNM_NOMATCH);
+ p++;
+ Inc(s);
+ continue;
+
+ case '[': {
+ const char *t;
+ if (ISEND(s))
+ RETURN(FNM_NOMATCH);
+ if (t = bracket(p + 1, s, flags)) {
+ p = t;
+ Inc(s);
+ continue;
+ }
+ goto failed;
+ }
+ }
+
+ /* ordinary */
+ p = UNESCAPE(p);
+ if (ISEND(s))
+ RETURN(ISEND(p) ? 0 : FNM_NOMATCH);
+ if (ISEND(p))
+ goto failed;
+ if (Compare(p, s) != 0)
+ goto failed;
+ Inc(p);
+ Inc(s);
+ continue;
+
+ failed: /* try next '*' position */
+ if (ptmp && stmp) {
+ p = ptmp;
+ Inc(stmp); /* !ISEND(*stmp) */
+ s = stmp;
+ continue;
+ }
+ RETURN(FNM_NOMATCH);
+ }
+}
+
+static int
+fnmatch(p, s, flags)
+ const char *p; /* pattern */
+ const char *s; /* string */
+ int flags;
+{
+ const int period = !(flags & FNM_DOTMATCH);
+ const int pathname = flags & FNM_PATHNAME;
+
+ const char *ptmp = 0;
+ const char *stmp = 0;
+
+ if (pathname) {
+ while (1) {
+ if (p[0] == '*' && p[1] == '*' && p[2] == '/') {
+ do { p += 3; } while (p[0] == '*' && p[1] == '*' && p[2] == '/');
+ ptmp = p;
+ stmp = s;
+ }
+ if (fnmatch_helper(&p, &s, flags) == 0) {
+ while (*s && *s != '/') Inc(s);
+ if (*p && *s) {
+ p++;
+ s++;
+ continue;
+ }
+ if (!*p && !*s)
+ return 0;
+ }
+ /* failed : try next recursion */
+ if (ptmp && stmp && !(period && *stmp == '.')) {
+ while (*stmp && *stmp != '/') Inc(stmp);
+ if (*stmp) {
+ p = ptmp;
+ stmp++;
+ s = stmp;
+ continue;
+ }
+ }
+ return FNM_NOMATCH;
+ }
+ }
+ else
+ return fnmatch_helper(&p, &s, flags);
+}
+
+VALUE rb_cDir;
+
+struct dir_data {
+ DIR *dir;
+ char *path;
+};
+
+static void
+free_dir(dir)
+ struct dir_data *dir;
+{
+ if (dir) {
+ if (dir->dir) closedir(dir->dir);
+ if (dir->path) free(dir->path);
+ }
+ free(dir);
+}
+
+static VALUE dir_close _((VALUE));
+
+static VALUE dir_s_alloc _((VALUE));
+static VALUE
+dir_s_alloc(klass)
+ VALUE klass;
+{
+ struct dir_data *dirp;
+ VALUE obj = Data_Make_Struct(klass, struct dir_data, 0, free_dir, dirp);
+
+ dirp->dir = NULL;
+ dirp->path = NULL;
+
+ return obj;
+}
+
+/*
+ * call-seq:
+ * Dir.new( string ) -> aDir
+ *
+ * Returns a new directory object for the named directory.
+ */
+static VALUE
+dir_initialize(dir, dirname)
+ VALUE dir, dirname;
+{
+ struct dir_data *dp;
+
+ SafeStringValue(dirname);
+ Data_Get_Struct(dir, struct dir_data, dp);
+ if (dp->dir) closedir(dp->dir);
+ if (dp->path) free(dp->path);
+ dp->dir = NULL;
+ dp->path = NULL;
+ dp->dir = opendir(RSTRING(dirname)->ptr);
+ if (dp->dir == NULL) {
+ if (errno == EMFILE || errno == ENFILE) {
+ rb_gc();
+ dp->dir = opendir(RSTRING(dirname)->ptr);
+ }
+ if (dp->dir == NULL) {
+ rb_sys_fail(RSTRING(dirname)->ptr);
+ }
+ }
+ dp->path = strdup(RSTRING(dirname)->ptr);
+
+ return dir;
+}
+
+/*
+ * call-seq:
+ * Dir.open( string ) => aDir
+ * Dir.open( string ) {| aDir | block } => anObject
+ *
+ * With no block, <code>open</code> is a synonym for
+ * <code>Dir::new</code>. If a block is present, it is passed
+ * <i>aDir</i> as a parameter. The directory is closed at the end of
+ * the block, and <code>Dir::open</code> returns the value of the
+ * block.
+ */
+
+static VALUE
+dir_s_open(klass, dirname)
+ VALUE klass, dirname;
+{
+ struct dir_data *dp;
+ VALUE dir = Data_Make_Struct(klass, struct dir_data, 0, free_dir, dp);
+
+ dir_initialize(dir, dirname);
+ if (rb_block_given_p()) {
+ return rb_ensure(rb_yield, dir, dir_close, dir);
+ }
+
+ return dir;
+}
+
+static void
+dir_closed()
+{
+ rb_raise(rb_eIOError, "closed directory");
+}
+
+static void
+dir_check(dir)
+ VALUE dir;
+{
+ if (!OBJ_TAINTED(dir) && rb_safe_level() >= 4)
+ rb_raise(rb_eSecurityError, "Insecure: operation on untainted Dir");
+ rb_check_frozen(dir);
+}
+
+#define GetDIR(obj, dirp) do {\
+ dir_check(dir);\
+ Data_Get_Struct(obj, struct dir_data, dirp);\
+ if (dirp->dir == NULL) dir_closed();\
+} while (0)
+
+/*
+ * call-seq:
+ * dir.inspect => string
+ *
+ * Return a string describing this Dir object.
+ */
+static VALUE
+dir_inspect(dir)
+ VALUE dir;
+{
+ struct dir_data *dirp;
+
+ GetDIR(dir, dirp);
+ if (dirp->path) {
+ char *c = rb_obj_classname(dir);
+ int len = strlen(c) + strlen(dirp->path) + 4;
+ VALUE s = rb_str_new(0, len);
+ snprintf(RSTRING_PTR(s), len+1, "#<%s:%s>", c, dirp->path);
+ return s;
+ }
+ return rb_funcall(dir, rb_intern("to_s"), 0, 0);
+}
+
+/*
+ * call-seq:
+ * dir.path => string or nil
+ *
+ * Returns the path parameter passed to <em>dir</em>'s constructor.
+ *
+ * d = Dir.new("..")
+ * d.path #=> ".."
+ */
+static VALUE
+dir_path(dir)
+ VALUE dir;
+{
+ struct dir_data *dirp;
+
+ GetDIR(dir, dirp);
+ if (!dirp->path) return Qnil;
+ return rb_str_new2(dirp->path);
+}
+
+/*
+ * call-seq:
+ * dir.read => string or nil
+ *
+ * Reads the next entry from <em>dir</em> and returns it as a string.
+ * Returns <code>nil</code> at the end of the stream.
+ *
+ * d = Dir.new("testdir")
+ * d.read #=> "."
+ * d.read #=> ".."
+ * d.read #=> "config.h"
+ */
+static VALUE
+dir_read(dir)
+ VALUE dir;
+{
+ struct dir_data *dirp;
+ struct dirent *dp;
+
+ GetDIR(dir, dirp);
+ errno = 0;
+ dp = readdir(dirp->dir);
+ if (dp) {
+ return rb_tainted_str_new(dp->d_name, NAMLEN(dp));
+ }
+ else if (errno == 0) { /* end of stream */
+ return Qnil;
+ }
+ else {
+ rb_sys_fail(0);
+ }
+ return Qnil; /* not reached */
+}
+
+/*
+ * call-seq:
+ * dir.each { |filename| block } => dir
+ *
+ * Calls the block once for each entry in this directory, passing the
+ * filename of each entry as a parameter to the block.
+ *
+ * d = Dir.new("testdir")
+ * d.each {|x| puts "Got #{x}" }
+ *
+ * <em>produces:</em>
+ *
+ * Got .
+ * Got ..
+ * Got config.h
+ * Got main.rb
+ */
+static VALUE
+dir_each(dir)
+ VALUE dir;
+{
+ struct dir_data *dirp;
+ struct dirent *dp;
+
+ GetDIR(dir, dirp);
+ rewinddir(dirp->dir);
+ for (dp = readdir(dirp->dir); dp != NULL; dp = readdir(dirp->dir)) {
+ rb_yield(rb_tainted_str_new(dp->d_name, NAMLEN(dp)));
+ if (dirp->dir == NULL) dir_closed();
+ }
+ return dir;
+}
+
+/*
+ * call-seq:
+ * dir.pos => integer
+ * dir.tell => integer
+ *
+ * Returns the current position in <em>dir</em>. See also
+ * <code>Dir#seek</code>.
+ *
+ * d = Dir.new("testdir")
+ * d.tell #=> 0
+ * d.read #=> "."
+ * d.tell #=> 12
+ */
+static VALUE
+dir_tell(dir)
+ VALUE dir;
+{
+#ifdef HAVE_TELLDIR
+ struct dir_data *dirp;
+ long pos;
+
+ GetDIR(dir, dirp);
+ pos = telldir(dirp->dir);
+ return rb_int2inum(pos);
+#else
+ rb_notimplement();
+#endif
+}
+
+/*
+ * call-seq:
+ * dir.seek( integer ) => dir
+ *
+ * Seeks to a particular location in <em>dir</em>. <i>integer</i>
+ * must be a value returned by <code>Dir#tell</code>.
+ *
+ * d = Dir.new("testdir") #=> #<Dir:0x401b3c40>
+ * d.read #=> "."
+ * i = d.tell #=> 12
+ * d.read #=> ".."
+ * d.seek(i) #=> #<Dir:0x401b3c40>
+ * d.read #=> ".."
+ */
+static VALUE
+dir_seek(dir, pos)
+ VALUE dir, pos;
+{
+ struct dir_data *dirp;
+ off_t p = NUM2OFFT(pos);
+
+ GetDIR(dir, dirp);
+#ifdef HAVE_SEEKDIR
+ seekdir(dirp->dir, p);
+ return dir;
+#else
+ rb_notimplement();
+#endif
+}
+
+/*
+ * call-seq:
+ * dir.pos( integer ) => integer
+ *
+ * Synonym for <code>Dir#seek</code>, but returns the position
+ * parameter.
+ *
+ * d = Dir.new("testdir") #=> #<Dir:0x401b3c40>
+ * d.read #=> "."
+ * i = d.pos #=> 12
+ * d.read #=> ".."
+ * d.pos = i #=> 12
+ * d.read #=> ".."
+ */
+static VALUE
+dir_set_pos(dir, pos)
+ VALUE dir, pos;
+{
+ dir_seek(dir, pos);
+ return pos;
+}
+
+/*
+ * call-seq:
+ * dir.rewind => dir
+ *
+ * Repositions <em>dir</em> to the first entry.
+ *
+ * d = Dir.new("testdir")
+ * d.read #=> "."
+ * d.rewind #=> #<Dir:0x401b3fb0>
+ * d.read #=> "."
+ */
+static VALUE
+dir_rewind(dir)
+ VALUE dir;
+{
+ struct dir_data *dirp;
+
+ if (rb_safe_level() >= 4 && !OBJ_TAINTED(dir)) {
+ rb_raise(rb_eSecurityError, "Insecure: can't close");
+ }
+ GetDIR(dir, dirp);
+ rewinddir(dirp->dir);
+ return dir;
+}
+
+/*
+ * call-seq:
+ * dir.close => nil
+ *
+ * Closes the directory stream. Any further attempts to access
+ * <em>dir</em> will raise an <code>IOError</code>.
+ *
+ * d = Dir.new("testdir")
+ * d.close #=> nil
+ */
+static VALUE
+dir_close(dir)
+ VALUE dir;
+{
+ struct dir_data *dirp;
+
+ GetDIR(dir, dirp);
+ closedir(dirp->dir);
+ dirp->dir = NULL;
+
+ return Qnil;
+}
+
+static void
+dir_chdir(path)
+ VALUE path;
+{
+ if (chdir(RSTRING(path)->ptr) < 0)
+ rb_sys_fail(RSTRING(path)->ptr);
+}
+
+static int chdir_blocking = 0;
+static VALUE chdir_thread = Qnil;
+
+struct chdir_data {
+ VALUE old_path, new_path;
+ int done;
+};
+
+static VALUE
+chdir_yield(args)
+ struct chdir_data *args;
+{
+ dir_chdir(args->new_path);
+ args->done = Qtrue;
+ chdir_blocking++;
+ if (chdir_thread == Qnil)
+ chdir_thread = rb_thread_current();
+ return rb_yield(args->new_path);
+}
+
+static VALUE
+chdir_restore(args)
+ struct chdir_data *args;
+{
+ if (args->done) {
+ chdir_blocking--;
+ if (chdir_blocking == 0)
+ chdir_thread = Qnil;
+ dir_chdir(args->old_path);
+ }
+ return Qnil;
+}
+
+/*
+ * call-seq:
+ * Dir.chdir( [ string] ) => 0
+ * Dir.chdir( [ string] ) {| path | block } => anObject
+ *
+ * Changes the current working directory of the process to the given
+ * string. When called without an argument, changes the directory to
+ * the value of the environment variable <code>HOME</code>, or
+ * <code>LOGDIR</code>. <code>SystemCallError</code> (probably
+ * <code>Errno::ENOENT</code>) if the target directory does not exist.
+ *
+ * If a block is given, it is passed the name of the new current
+ * directory, and the block is executed with that as the current
+ * directory. The original working directory is restored when the block
+ * exits. The return value of <code>chdir</code> is the value of the
+ * block. <code>chdir</code> blocks can be nested, but in a
+ * multi-threaded program an error will be raised if a thread attempts
+ * to open a <code>chdir</code> block while another thread has one
+ * open.
+ *
+ * Dir.chdir("/var/spool/mail")
+ * puts Dir.pwd
+ * Dir.chdir("/tmp") do
+ * puts Dir.pwd
+ * Dir.chdir("/usr") do
+ * puts Dir.pwd
+ * end
+ * puts Dir.pwd
+ * end
+ * puts Dir.pwd
+ *
+ * <em>produces:</em>
+ *
+ * /var/spool/mail
+ * /tmp
+ * /usr
+ * /tmp
+ * /var/spool/mail
+ */
+static VALUE
+dir_s_chdir(argc, argv, obj)
+ int argc;
+ VALUE *argv;
+ VALUE obj;
+{
+ VALUE path = Qnil;
+
+ rb_secure(2);
+ if (rb_scan_args(argc, argv, "01", &path) == 1) {
+ SafeStringValue(path);
+ }
+ else {
+ const char *dist = getenv("HOME");
+ if (!dist) {
+ dist = getenv("LOGDIR");
+ if (!dist) rb_raise(rb_eArgError, "HOME/LOGDIR not set");
+ }
+ path = rb_str_new2(dist);
+ }
+
+ if (chdir_blocking > 0) {
+ if (!rb_block_given_p() || rb_thread_current() != chdir_thread)
+ rb_warn("conflicting chdir during another chdir block");
+ }
+
+ if (rb_block_given_p()) {
+ struct chdir_data args;
+ char *cwd = my_getcwd();
+
+ args.old_path = rb_tainted_str_new2(cwd); free(cwd);
+ args.new_path = path;
+ args.done = Qfalse;
+ return rb_ensure(chdir_yield, (VALUE)&args, chdir_restore, (VALUE)&args);
+ }
+ dir_chdir(path);
+
+ return INT2FIX(0);
+}
+
+/*
+ * call-seq:
+ * Dir.getwd => string
+ * Dir.pwd => string
+ *
+ * Returns the path to the current working directory of this process as
+ * a string.
+ *
+ * Dir.chdir("/tmp") #=> 0
+ * Dir.getwd #=> "/tmp"
+ */
+static VALUE
+dir_s_getwd(dir)
+ VALUE dir;
+{
+ char *path;
+ VALUE cwd;
+
+ rb_secure(4);
+ path = my_getcwd();
+ cwd = rb_tainted_str_new2(path);
+
+ free(path);
+ return cwd;
+}
+
+static void check_dirname _((volatile VALUE *));
+static void
+check_dirname(dir)
+ volatile VALUE *dir;
+{
+ char *path, *pend;
+
+ SafeStringValue(*dir);
+ rb_secure(2);
+ path = RSTRING(*dir)->ptr;
+ if (path && *(pend = rb_path_end(rb_path_skip_prefix(path)))) {
+ *dir = rb_str_new(path, pend - path);
+ }
+}
+
+/*
+ * call-seq:
+ * Dir.chroot( string ) => 0
+ *
+ * Changes this process's idea of the file system root. Only a
+ * privileged process may make this call. Not available on all
+ * platforms. On Unix systems, see <code>chroot(2)</code> for more
+ * information.
+ */
+static VALUE
+dir_s_chroot(dir, path)
+ VALUE dir, path;
+{
+#if defined(HAVE_CHROOT) && !defined(__CHECKER__)
+ check_dirname(&path);
+
+ if (chroot(RSTRING(path)->ptr) == -1)
+ rb_sys_fail(RSTRING(path)->ptr);
+
+ return INT2FIX(0);
+#else
+ rb_notimplement();
+ return Qnil; /* not reached */
+#endif
+}
+
+/*
+ * call-seq:
+ * Dir.mkdir( string [, integer] ) => 0
+ *
+ * Makes a new directory named by <i>string</i>, with permissions
+ * specified by the optional parameter <i>anInteger</i>. The
+ * permissions may be modified by the value of
+ * <code>File::umask</code>, and are ignored on NT. Raises a
+ * <code>SystemCallError</code> if the directory cannot be created. See
+ * also the discussion of permissions in the class documentation for
+ * <code>File</code>.
+ *
+ */
+static VALUE
+dir_s_mkdir(argc, argv, obj)
+ int argc;
+ VALUE *argv;
+ VALUE obj;
+{
+ VALUE path, vmode;
+ int mode;
+
+ if (rb_scan_args(argc, argv, "11", &path, &vmode) == 2) {
+ mode = NUM2INT(vmode);
+ }
+ else {
+ mode = 0777;
+ }
+
+ check_dirname(&path);
+ if (mkdir(RSTRING(path)->ptr, mode) == -1)
+ rb_sys_fail(RSTRING(path)->ptr);
+
+ return INT2FIX(0);
+}
+
+/*
+ * call-seq:
+ * Dir.delete( string ) => 0
+ * Dir.rmdir( string ) => 0
+ * Dir.unlink( string ) => 0
+ *
+ * Deletes the named directory. Raises a subclass of
+ * <code>SystemCallError</code> if the directory isn't empty.
+ */
+static VALUE
+dir_s_rmdir(obj, dir)
+ VALUE obj, dir;
+{
+ check_dirname(&dir);
+ if (rmdir(RSTRING(dir)->ptr) < 0)
+ rb_sys_fail(RSTRING(dir)->ptr);
+
+ return INT2FIX(0);
+}
+
+static void
+sys_warning_1(mesg)
+ const char* mesg;
+{
+ rb_sys_warning("%s", mesg);
+}
+
+#define GLOB_VERBOSE (1UL << (sizeof(int) * CHAR_BIT - 1))
+#define sys_warning(val) \
+ (void)((flags & GLOB_VERBOSE) && rb_protect((VALUE (*)_((VALUE)))sys_warning_1, (VALUE)(val), 0))
+
+#define GLOB_ALLOC(type) (type *)malloc(sizeof(type))
+#define GLOB_ALLOC_N(type, n) (type *)malloc(sizeof(type) * (n))
+#define GLOB_JUMP_TAG(status) ((status == -1) ? rb_memerror() : rb_jump_tag(status))
+
+/*
+ * ENOTDIR can be returned by stat(2) if a non-leaf element of the path
+ * is not a directory.
+ */
+#define to_be_ignored(e) ((e) == ENOENT || (e) == ENOTDIR)
+
+/* System call with warning */
+static int
+do_stat(const char *path, struct stat *pst, int flags)
+
+{
+ int ret = stat(path, pst);
+ if (ret < 0 && !to_be_ignored(errno))
+ sys_warning(path);
+
+ return ret;
+}
+
+static int
+do_lstat(const char *path, struct stat *pst, int flags)
+{
+ int ret = lstat(path, pst);
+ if (ret < 0 && !to_be_ignored(errno))
+ sys_warning(path);
+
+ return ret;
+}
+
+static DIR *
+do_opendir(const char *path, int flags)
+{
+ DIR *dirp = opendir(path);
+ if (dirp == NULL && !to_be_ignored(errno))
+ sys_warning(path);
+
+ return dirp;
+}
+
+/* Return nonzero if S has any special globbing chars in it. */
+static int
+has_magic(s, flags)
+ const char *s;
+ int flags;
+{
+ const int escape = !(flags & FNM_NOESCAPE);
+ const int nocase = flags & FNM_CASEFOLD;
+
+ register const char *p = s;
+ register char c;
+
+ while (c = *p++) {
+ switch (c) {
+ case '*':
+ case '?':
+ case '[':
+ return 1;
+
+ case '\\':
+ if (escape && !(c = *p++))
+ return 0;
+ continue;
+
+ default:
+ if (!FNM_SYSCASE && ISALPHA(c) && nocase)
+ return 1;
+ }
+
+ p = Next(p-1);
+ }
+
+ return 0;
+}
+
+/* Find separator in globbing pattern. */
+static char *
+find_dirsep(const char *s, int flags)
+{
+ const int escape = !(flags & FNM_NOESCAPE);
+
+ register const char *p = s;
+ register char c;
+ int open = 0;
+
+ while (c = *p++) {
+ switch (c) {
+ case '[':
+ open = 1;
+ continue;
+ case ']':
+ open = 0;
+ continue;
+
+ case '/':
+ if (!open)
+ return (char *)p-1;
+ continue;
+
+ case '\\':
+ if (escape && !(c = *p++))
+ return (char *)p-1;
+ continue;
+ }
+
+ p = Next(p-1);
+ }
+
+ return (char *)p-1;
+}
+
+/* Remove escaping backslashes */
+static void
+remove_backslashes(p)
+ char *p;
+{
+ char *t = p;
+ char *s = p;
+
+ while (*p) {
+ if (*p == '\\') {
+ if (t != s)
+ memmove(t, s, p - s);
+ t += p - s;
+ s = ++p;
+ if (!*p) break;
+ }
+ Inc(p);
+ }
+
+ while (*p++);
+
+ if (t != s)
+ memmove(t, s, p - s); /* move '\0' too */
+}
+
+/* Globing pattern */
+enum glob_pattern_type { PLAIN, MAGICAL, RECURSIVE, MATCH_ALL, MATCH_DIR };
+
+struct glob_pattern {
+ char *str;
+ enum glob_pattern_type type;
+ struct glob_pattern *next;
+};
+
+static void glob_free_pattern(struct glob_pattern *list);
+
+static struct glob_pattern *
+glob_make_pattern(const char *p, int flags)
+{
+ struct glob_pattern *list, *tmp, **tail = &list;
+ int dirsep = 0; /* pattern is terminated with '/' */
+
+ while (*p) {
+ tmp = GLOB_ALLOC(struct glob_pattern);
+ if (!tmp) goto error;
+ if (p[0] == '*' && p[1] == '*' && p[2] == '/') {
+ /* fold continuous RECURSIVEs (needed in glob_helper) */
+ do { p += 3; } while (p[0] == '*' && p[1] == '*' && p[2] == '/');
+ tmp->type = RECURSIVE;
+ tmp->str = 0;
+ dirsep = 1;
+ }
+ else {
+ const char *m = find_dirsep(p, flags);
+ char *buf = GLOB_ALLOC_N(char, m-p+1);
+ if (!buf) {
+ free(tmp);
+ goto error;
+ }
+ memcpy(buf, p, m-p);
+ buf[m-p] = '\0';
+ tmp->type = has_magic(buf, flags) ? MAGICAL : PLAIN;
+ tmp->str = buf;
+ if (*m) {
+ dirsep = 1;
+ p = m + 1;
+ }
+ else {
+ dirsep = 0;
+ p = m;
+ }
+ }
+ *tail = tmp;
+ tail = &tmp->next;
+ }
+
+ tmp = GLOB_ALLOC(struct glob_pattern);
+ if (!tmp) {
+ error:
+ *tail = 0;
+ glob_free_pattern(list);
+ return 0;
+ }
+ tmp->type = dirsep ? MATCH_DIR : MATCH_ALL;
+ tmp->str = 0;
+ *tail = tmp;
+ tmp->next = 0;
+
+ return list;
+}
+
+static void
+glob_free_pattern(struct glob_pattern *list)
+{
+ while (list) {
+ struct glob_pattern *tmp = list;
+ list = list->next;
+ if (tmp->str)
+ free(tmp->str);
+ free(tmp);
+ }
+}
+
+static char *
+join_path(const char *path, int dirsep, const char *name)
+{
+ long len = strlen(path);
+ char *buf = GLOB_ALLOC_N(char, len+strlen(name)+(dirsep?1:0)+1);
+
+ if (!buf) return 0;
+ memcpy(buf, path, len);
+ if (dirsep) {
+ strcpy(buf+len, "/");
+ len++;
+ }
+ strcpy(buf+len, name);
+ return buf;
+}
+
+enum answer { YES, NO, UNKNOWN };
+
+#ifndef S_ISLNK
+# ifndef S_IFLNK
+# define S_ISLNK(m) (0)
+# else
+# define S_ISLNK(m) ((m & S_IFMT) == S_IFLNK)
+# endif
+#endif
+
+#ifndef S_ISDIR
+# define S_ISDIR(m) ((m & S_IFMT) == S_IFDIR)
+#endif
+
+struct glob_args {
+ void (*func) _((const char*, VALUE));
+ const char *c;
+ VALUE v;
+};
+
+static VALUE glob_func_caller _((VALUE));
+
+static VALUE
+glob_func_caller(val)
+ VALUE val;
+{
+ struct glob_args *args = (struct glob_args *)val;
+
+ (*args->func)(args->c, args->v);
+ return Qnil;
+}
+
+#define glob_call_func(func, path, arg) (*func)(path, arg)
+
+static int glob_helper _((const char *, int, enum answer, enum answer, struct glob_pattern **, struct glob_pattern **, int, ruby_glob_func *, VALUE));
+
+static int
+glob_helper(path, dirsep, exist, isdir, beg, end, flags, func, arg)
+ const char *path;
+ int dirsep; /* '/' should be placed before appending child entry's name to 'path'. */
+ enum answer exist; /* Does 'path' indicate an existing entry? */
+ enum answer isdir; /* Does 'path' indicate a directory or a symlink to a directory? */
+ struct glob_pattern **beg;
+ struct glob_pattern **end;
+ int flags;
+ ruby_glob_func *func;
+ VALUE arg;
+{
+ struct stat st;
+ int status = 0;
+ struct glob_pattern **cur, **new_beg, **new_end;
+ int plain = 0, magical = 0, recursive = 0, match_all = 0, match_dir = 0;
+ int escape = !(flags & FNM_NOESCAPE);
+
+ for (cur = beg; cur < end; ++cur) {
+ struct glob_pattern *p = *cur;
+ if (p->type == RECURSIVE) {
+ recursive = 1;
+ p = p->next;
+ }
+ switch (p->type) {
+ case PLAIN:
+ plain = 1;
+ break;
+ case MAGICAL:
+ magical = 1;
+ break;
+ case MATCH_ALL:
+ match_all = 1;
+ break;
+ case MATCH_DIR:
+ match_dir = 1;
+ break;
+ case RECURSIVE:
+ rb_bug("continuous RECURSIVEs");
+ }
+ }
+
+ if (*path) {
+ if (match_all && exist == UNKNOWN) {
+ if (do_lstat(path, &st, flags) == 0) {
+ exist = YES;
+ isdir = S_ISDIR(st.st_mode) ? YES : S_ISLNK(st.st_mode) ? UNKNOWN : NO;
+ }
+ else {
+ exist = NO;
+ isdir = NO;
+ }
+ }
+ if (match_dir && isdir == UNKNOWN) {
+ if (do_stat(path, &st, flags) == 0) {
+ exist = YES;
+ isdir = S_ISDIR(st.st_mode) ? YES : NO;
+ }
+ else {
+ exist = NO;
+ isdir = NO;
+ }
+ }
+ if (match_all && exist == YES) {
+ status = glob_call_func(func, path, arg);
+ if (status) return status;
+ }
+ if (match_dir && isdir == YES) {
+ char *tmp = join_path(path, dirsep, "");
+ if (!tmp) return -1;
+ status = glob_call_func(func, tmp, arg);
+ free(tmp);
+ if (status) return status;
+ }
+ }
+
+ if (exist == NO || isdir == NO) return 0;
+
+ if (magical || recursive) {
+ struct dirent *dp;
+ DIR *dirp = do_opendir(*path ? path : ".", flags);
+ if (dirp == NULL) return 0;
+
+ for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)) {
+ char *buf = join_path(path, dirsep, dp->d_name);
+ enum answer new_isdir = UNKNOWN;
+
+ if (!buf) {
+ status = -1;
+ break;
+ }
+ if (recursive && strcmp(dp->d_name, ".") != 0 && strcmp(dp->d_name, "..") != 0
+ && fnmatch("*", dp->d_name, flags) == 0) {
+#ifndef _WIN32
+ if (do_lstat(buf, &st, flags) == 0)
+ new_isdir = S_ISDIR(st.st_mode) ? YES : S_ISLNK(st.st_mode) ? UNKNOWN : NO;
+ else
+ new_isdir = NO;
+#else
+ new_isdir = dp->d_isdir ? (!dp->d_isrep ? YES : UNKNOWN) : NO;
+#endif
+ }
+
+ new_beg = new_end = GLOB_ALLOC_N(struct glob_pattern *, (end - beg) * 2);
+ if (!new_beg) {
+ status = -1;
+ break;
+ }
+
+ for (cur = beg; cur < end; ++cur) {
+ struct glob_pattern *p = *cur;
+ if (p->type == RECURSIVE) {
+ if (new_isdir == YES) /* not symlink but real directory */
+ *new_end++ = p; /* append recursive pattern */
+ p = p->next; /* 0 times recursion */
+ }
+ if (p->type == PLAIN || p->type == MAGICAL) {
+ if (fnmatch(p->str, dp->d_name, flags) == 0)
+ *new_end++ = p->next;
+ }
+ }
+
+ status = glob_helper(buf, 1, YES, new_isdir, new_beg, new_end, flags, func, arg);
+ free(buf);
+ free(new_beg);
+ if (status) break;
+ }
+
+ closedir(dirp);
+ }
+ else if (plain) {
+ struct glob_pattern **copy_beg, **copy_end, **cur2;
+
+ copy_beg = copy_end = GLOB_ALLOC_N(struct glob_pattern *, end - beg);
+ if (!copy_beg) return -1;
+ for (cur = beg; cur < end; ++cur)
+ *copy_end++ = (*cur)->type == PLAIN ? *cur : 0;
+
+ for (cur = copy_beg; cur < copy_end; ++cur) {
+ if (*cur) {
+ char *buf;
+ char *name;
+ name = GLOB_ALLOC_N(char, strlen((*cur)->str) + 1);
+ if (!name) {
+ status = -1;
+ break;
+ }
+ strcpy(name, (*cur)->str);
+ if (escape) remove_backslashes(name);
+
+ new_beg = new_end = GLOB_ALLOC_N(struct glob_pattern *, end - beg);
+ if (!new_beg) {
+ free(name);
+ status = -1;
+ break;
+ }
+ *new_end++ = (*cur)->next;
+ for (cur2 = cur + 1; cur2 < copy_end; ++cur2) {
+ if (*cur2 && fnmatch((*cur2)->str, name, flags) == 0) {
+ *new_end++ = (*cur2)->next;
+ *cur2 = 0;
+ }
+ }
+
+ buf = join_path(path, dirsep, name);
+ free(name);
+ if (!buf) {
+ free(new_beg);
+ status = -1;
+ break;
+ }
+ status = glob_helper(buf, 1, UNKNOWN, UNKNOWN, new_beg, new_end, flags, func, arg);
+ free(buf);
+ free(new_beg);
+ if (status) break;
+ }
+ }
+
+ free(copy_beg);
+ }
+
+ return status;
+}
+
+static int
+ruby_glob0(path, flags, func, arg)
+ const char *path;
+ int flags;
+ ruby_glob_func *func;
+ VALUE arg;
+{
+ struct glob_pattern *list;
+ const char *root, *start;
+ char *buf;
+ int n;
+ int status;
+
+ start = root = path;
+ flags |= FNM_SYSCASE;
+#if defined DOSISH
+ root = rb_path_skip_prefix(root);
+#endif
+
+ if (root && *root == '/') root++;
+
+ n = root - start;
+ buf = GLOB_ALLOC_N(char, n + 1);
+ if (!buf) return -1;
+ MEMCPY(buf, start, char, n);
+ buf[n] = '\0';
+
+ list = glob_make_pattern(root, flags);
+ if (!list) {
+ free(buf);
+ return -1;
+ }
+ status = glob_helper(buf, 0, UNKNOWN, UNKNOWN, &list, &list + 1, flags, func, arg);
+ glob_free_pattern(list);
+ free(buf);
+
+ return status;
+}
+
+int
+ruby_glob(path, flags, func, arg)
+ const char *path;
+ int flags;
+ ruby_glob_func *func;
+ VALUE arg;
+{
+ return ruby_glob0(path, flags & ~GLOB_VERBOSE, func, arg);
+}
+
+static int rb_glob_caller _((const char *, VALUE));
+
+static int
+rb_glob_caller(path, a)
+ const char *path;
+ VALUE a;
+{
+ int status;
+ struct glob_args *args = (struct glob_args *)a;
+
+ args->c = path;
+ rb_protect(glob_func_caller, a, &status);
+ return status;
+}
+
+static int
+rb_glob2(path, flags, func, arg)
+ const char *path;
+ int flags;
+ void (*func) _((const char *, VALUE));
+ VALUE arg;
+{
+ struct glob_args args;
+
+ args.func = func;
+ args.v = arg;
+
+ if (flags & FNM_SYSCASE) {
+ rb_warning("Dir.glob() ignores File::FNM_CASEFOLD");
+ }
+
+ return ruby_glob0(path, flags | GLOB_VERBOSE, rb_glob_caller, (VALUE)&args);
+}
+
+void
+rb_glob(path, func, arg)
+ const char *path;
+ void (*func) _((const char*, VALUE));
+ VALUE arg;
+{
+ int status = rb_glob2(path, 0, func, arg);
+ if (status) GLOB_JUMP_TAG(status);
+}
+
+static void push_pattern _((const char* path, VALUE ary));
+static void
+push_pattern(path, ary)
+ const char *path;
+ VALUE ary;
+{
+ rb_ary_push(ary, rb_tainted_str_new2(path));
+}
+
+int
+ruby_brace_expand(str, flags, func, arg)
+ const char *str;
+ int flags;
+ ruby_glob_func *func;
+ VALUE arg;
+{
+ const int escape = !(flags & FNM_NOESCAPE);
+ const char *p = str;
+ const char *s = p;
+ const char *lbrace = 0, *rbrace = 0;
+ int nest = 0, status = 0;
+
+ while (*p) {
+ if (*p == '{' && nest++ == 0) {
+ lbrace = p;
+ }
+ if (*p == '}' && --nest <= 0) {
+ rbrace = p;
+ break;
+ }
+ if (*p == '\\' && escape) {
+ if (!*++p) break;
+ }
+ Inc(p);
+ }
+
+ if (lbrace && rbrace) {
+ char *buf = GLOB_ALLOC_N(char, strlen(s) + 1);
+ long shift;
+
+ if (!buf) return -1;
+ memcpy(buf, s, lbrace-s);
+ shift = (lbrace-s);
+ p = lbrace;
+ while (p < rbrace) {
+ const char *t = ++p;
+ nest = 0;
+ while (p < rbrace && !(*p == ',' && nest == 0)) {
+ if (*p == '{') nest++;
+ if (*p == '}') nest--;
+ if (*p == '\\' && escape) {
+ if (++p == rbrace) break;
+ }
+ Inc(p);
+ }
+ memcpy(buf+shift, t, p-t);
+ strcpy(buf+shift+(p-t), rbrace+1);
+ status = ruby_brace_expand(buf, flags, func, arg);
+ if (status) break;
+ }
+ free(buf);
+ }
+ else if (!lbrace && !rbrace) {
+ status = (*func)(s, arg);
+ }
+
+ return status;
+}
+
+struct brace_args {
+ ruby_glob_func *func;
+ VALUE value;
+ int flags;
+};
+
+static int glob_brace _((const char *, VALUE));
+static int
+glob_brace(path, val)
+ const char *path;
+ VALUE val;
+{
+ struct brace_args *arg = (struct brace_args *)val;
+
+ return ruby_glob0(path, arg->flags, arg->func, arg->value);
+}
+
+static int
+ruby_brace_glob0(str, flags, func, arg)
+ const char *str;
+ int flags;
+ ruby_glob_func *func;
+ VALUE arg;
+{
+ struct brace_args args;
+
+ args.func = func;
+ args.value = arg;
+ args.flags = flags;
+ return ruby_brace_expand(str, flags, glob_brace, (VALUE)&args);
+}
+
+int
+ruby_brace_glob(str, flags, func, arg)
+ const char *str;
+ int flags;
+ ruby_glob_func *func;
+ VALUE arg;
+{
+ return ruby_brace_glob0(str, flags & ~GLOB_VERBOSE, func, arg);
+}
+
+static int
+push_glob(VALUE ary, const char *str, int flags)
+{
+ struct glob_args args;
+
+ args.func = push_pattern;
+ args.v = ary;
+ return ruby_brace_glob0(str, flags | GLOB_VERBOSE, rb_glob_caller, (VALUE)&args);
+}
+
+static VALUE
+rb_push_glob(str, flags) /* '\0' is delimiter */
+ VALUE str;
+ int flags;
+{
+ long offset = 0;
+ VALUE ary;
+
+ ary = rb_ary_new();
+ SafeStringValue(str);
+
+ while (offset < RSTRING_LEN(str)) {
+ int status = push_glob(ary, RSTRING(str)->ptr + offset, flags);
+ char *p, *pend;
+ if (status) GLOB_JUMP_TAG(status);
+ if (offset >= RSTRING_LEN(str)) break;
+ p = RSTRING(str)->ptr + offset;
+ p += strlen(p) + 1;
+ pend = RSTRING(str)->ptr + RSTRING_LEN(str);
+ while (p < pend && !*p)
+ p++;
+ offset = p - RSTRING(str)->ptr;
+ }
+
+ return ary;
+}
+
+static VALUE
+dir_globs(argc, argv, flags)
+ long argc;
+ VALUE *argv;
+ int flags;
+{
+ VALUE ary = rb_ary_new();
+ long i;
+
+ for (i = 0; i < argc; ++i) {
+ int status;
+ VALUE str = argv[i];
+ StringValue(str);
+ status = push_glob(ary, RSTRING(str)->ptr, flags);
+ if (status) GLOB_JUMP_TAG(status);
+ }
+
+ return ary;
+}
+
+/*
+ * call-seq:
+ * Dir[ array ] => array
+ * Dir[ string [, string ...] ] => array
+ *
+ * Equivalent to calling
+ * <code>Dir.glob(</code><i>array,</i><code>0)</code> and
+ * <code>Dir.glob([</code><i>string,...</i><code>],0)</code>.
+ *
+ */
+static VALUE
+dir_s_aref(int argc, VALUE *argv, VALUE obj)
+ {
+ if (argc == 1) {
+ return rb_push_glob(argv[0], 0);
+ }
+ return dir_globs(argc, argv, 0);
+ }
+
+/*
+ * call-seq:
+ * Dir.glob( pattern, [flags] ) => array
+ * Dir.glob( pattern, [flags] ) {| filename | block } => nil
+ *
+ * Returns the filenames found by expanding <i>pattern</i> which is
+ * an +Array+ of the patterns or the pattern +String+, either as an
+ * <i>array</i> or as parameters to the block. Note that this pattern
+ * is not a regexp (it's closer to a shell glob). See
+ * <code>File::fnmatch</code> for the meaning of the <i>flags</i>
+ * parameter. Note that case sensitivity depends on your system (so
+ * <code>File::FNM_CASEFOLD</code> is ignored)
+ *
+ * <code>*</code>:: Matches any file. Can be restricted by
+ * other values in the glob. <code>*</code>
+ * will match all files; <code>c*</code> will
+ * match all files beginning with
+ * <code>c</code>; <code>*c</code> will match
+ * all files ending with <code>c</code>; and
+ * <code>*c*</code> will match all files that
+ * have <code>c</code> in them (including at
+ * the beginning or end). Equivalent to
+ * <code>/ .* /x</code> in regexp.
+ * <code>**</code>:: Matches directories recursively.
+ * <code>?</code>:: Matches any one character. Equivalent to
+ * <code>/.{1}/</code> in regexp.
+ * <code>[set]</code>:: Matches any one character in +set+.
+ * Behaves exactly like character sets in
+ * Regexp, including set negation
+ * (<code>[^a-z]</code>).
+ * <code>{p,q}</code>:: Matches either literal <code>p</code> or
+ * literal <code>q</code>. Matching literals
+ * may be more than one character in length.
+ * More than two literals may be specified.
+ * Equivalent to pattern alternation in
+ * regexp.
+ * <code>\</code>:: Escapes the next metacharacter.
+ *
+ * Dir["config.?"] #=> ["config.h"]
+ * Dir.glob("config.?") #=> ["config.h"]
+ * Dir.glob("*.[a-z][a-z]") #=> ["main.rb"]
+ * Dir.glob("*.[^r]*") #=> ["config.h"]
+ * Dir.glob("*.{rb,h}") #=> ["main.rb", "config.h"]
+ * Dir.glob("*") #=> ["config.h", "main.rb"]
+ * Dir.glob("*", File::FNM_DOTMATCH) #=> [".", "..", "config.h", "main.rb"]
+ *
+ * rbfiles = File.join("**", "*.rb")
+ * Dir.glob(rbfiles) #=> ["main.rb",
+ * "lib/song.rb",
+ * "lib/song/karaoke.rb"]
+ * libdirs = File.join("**", "lib")
+ * Dir.glob(libdirs) #=> ["lib"]
+ *
+ * librbfiles = File.join("**", "lib", "**", "*.rb")
+ * Dir.glob(librbfiles) #=> ["lib/song.rb",
+ * "lib/song/karaoke.rb"]
+ *
+ * librbfiles = File.join("**", "lib", "*.rb")
+ * Dir.glob(librbfiles) #=> ["lib/song.rb"]
+ */
+static VALUE
+dir_s_glob(argc, argv, obj)
+ int argc;
+ VALUE *argv;
+ VALUE obj;
+{
+ VALUE str, rflags, ary;
+ int flags;
+
+ if (rb_scan_args(argc, argv, "11", &str, &rflags) == 2)
+ flags = NUM2INT(rflags);
+ else
+ flags = 0;
+
+ ary = rb_check_array_type(str);
+ if (NIL_P(ary)) {
+ ary = rb_push_glob(str, flags);
+ }
+ else {
+ volatile VALUE v = ary;
+ ary = dir_globs(RARRAY_LEN(v), RARRAY_PTR(v), flags);
+ }
+
+ if (rb_block_given_p()) {
+ rb_ary_each(ary);
+ return Qnil;
+ }
+ return ary;
+}
+
+static VALUE
+dir_open_dir(path)
+ VALUE path;
+{
+ VALUE dir = rb_funcall(rb_cDir, rb_intern("open"), 1, path);
+
+ if (TYPE(dir) != T_DATA ||
+ RDATA(dir)->dfree != (RUBY_DATA_FUNC)free_dir) {
+ rb_raise(rb_eTypeError, "wrong argument type %s (expected Dir)",
+ rb_obj_classname(dir));
+ }
+ return dir;
+}
+
+
+/*
+ * call-seq:
+ * Dir.foreach( dirname ) {| filename | block } => nil
+ *
+ * Calls the block once for each entry in the named directory, passing
+ * the filename of each entry as a parameter to the block.
+ *
+ * Dir.foreach("testdir") {|x| puts "Got #{x}" }
+ *
+ * <em>produces:</em>
+ *
+ * Got .
+ * Got ..
+ * Got config.h
+ * Got main.rb
+ *
+ */
+static VALUE
+dir_foreach(io, dirname)
+ VALUE io, dirname;
+{
+ VALUE dir;
+
+ dir = dir_open_dir(dirname);
+ rb_ensure(dir_each, dir, dir_close, dir);
+ return Qnil;
+}
+
+/*
+ * call-seq:
+ * Dir.entries( dirname ) => array
+ *
+ * Returns an array containing all of the filenames in the given
+ * directory. Will raise a <code>SystemCallError</code> if the named
+ * directory doesn't exist.
+ *
+ * Dir.entries("testdir") #=> [".", "..", "config.h", "main.rb"]
+ *
+ */
+static VALUE
+dir_entries(io, dirname)
+ VALUE io, dirname;
+{
+ VALUE dir;
+
+ dir = dir_open_dir(dirname);
+ return rb_ensure(rb_Array, dir, dir_close, dir);
+}
+
+/*
+ * call-seq:
+ * File.fnmatch( pattern, path, [flags] ) => (true or false)
+ * File.fnmatch?( pattern, path, [flags] ) => (true or false)
+ *
+ * Returns true if <i>path</i> matches against <i>pattern</i> The
+ * pattern is not a regular expression; instead it follows rules
+ * similar to shell filename globbing. It may contain the following
+ * metacharacters:
+ *
+ * <code>*</code>:: Matches any file. Can be restricted by
+ * other values in the glob. <code>*</code>
+ * will match all files; <code>c*</code> will
+ * match all files beginning with
+ * <code>c</code>; <code>*c</code> will match
+ * all files ending with <code>c</code>; and
+ * <code>*c*</code> will match all files that
+ * have <code>c</code> in them (including at
+ * the beginning or end). Equivalent to
+ * <code>/ .* /x</code> in regexp.
+ * <code>**</code>:: Matches directories recursively or files
+ * expansively.
+ * <code>?</code>:: Matches any one character. Equivalent to
+ * <code>/.{1}/</code> in regexp.
+ * <code>[set]</code>:: Matches any one character in +set+.
+ * Behaves exactly like character sets in
+ * Regexp, including set negation
+ * (<code>[^a-z]</code>).
+ * <code>\</code>:: Escapes the next metacharacter.
+ *
+ * <i>flags</i> is a bitwise OR of the <code>FNM_xxx</code>
+ * parameters. The same glob pattern and flags are used by
+ * <code>Dir::glob</code>.
+ *
+ * File.fnmatch('cat', 'cat') #=> true : match entire string
+ * File.fnmatch('cat', 'category') #=> false : only match partial string
+ * File.fnmatch('c{at,ub}s', 'cats') #=> false : { } isn't supported
+ *
+ * File.fnmatch('c?t', 'cat') #=> true : '?' match only 1 character
+ * File.fnmatch('c??t', 'cat') #=> false : ditto
+ * File.fnmatch('c*', 'cats') #=> true : '*' match 0 or more characters
+ * File.fnmatch('c*t', 'c/a/b/t') #=> true : ditto
+ * File.fnmatch('ca[a-z]', 'cat') #=> true : inclusive bracket expression
+ * File.fnmatch('ca[^t]', 'cat') #=> false : exclusive bracket expression ('^' or '!')
+ *
+ * File.fnmatch('cat', 'CAT') #=> false : case sensitive
+ * File.fnmatch('cat', 'CAT', File::FNM_CASEFOLD) #=> true : case insensitive
+ *
+ * File.fnmatch('?', '/', File::FNM_PATHNAME) #=> false : wildcard doesn't match '/' on FNM_PATHNAME
+ * File.fnmatch('*', '/', File::FNM_PATHNAME) #=> false : ditto
+ * File.fnmatch('[/]', '/', File::FNM_PATHNAME) #=> false : ditto
+ *
+ * File.fnmatch('\?', '?') #=> true : escaped wildcard becomes ordinary
+ * File.fnmatch('\a', 'a') #=> true : escaped ordinary remains ordinary
+ * File.fnmatch('\a', '\a', File::FNM_NOESCAPE) #=> true : FNM_NOESACPE makes '\' ordinary
+ * File.fnmatch('[\?]', '?') #=> true : can escape inside bracket expression
+ *
+ * File.fnmatch('*', '.profile') #=> false : wildcard doesn't match leading
+ * File.fnmatch('*', '.profile', File::FNM_DOTMATCH) #=> true period by default.
+ * File.fnmatch('.*', '.profile') #=> true
+ *
+ * rbfiles = '**' '/' '*.rb' # you don't have to do like this. just write in single string.
+ * File.fnmatch(rbfiles, 'main.rb') #=> false
+ * File.fnmatch(rbfiles, './main.rb') #=> false
+ * File.fnmatch(rbfiles, 'lib/song.rb') #=> true
+ * File.fnmatch('**.rb', 'main.rb') #=> true
+ * File.fnmatch('**.rb', './main.rb') #=> false
+ * File.fnmatch('**.rb', 'lib/song.rb') #=> true
+ * File.fnmatch('*', 'dave/.profile') #=> true
+ *
+ * pattern = '*' '/' '*'
+ * File.fnmatch(pattern, 'dave/.profile', File::FNM_PATHNAME) #=> false
+ * File.fnmatch(pattern, 'dave/.profile', File::FNM_PATHNAME | File::FNM_DOTMATCH) #=> true
+ *
+ * pattern = '**' '/' 'foo'
+ * File.fnmatch(pattern, 'a/b/c/foo', File::FNM_PATHNAME) #=> true
+ * File.fnmatch(pattern, '/a/b/c/foo', File::FNM_PATHNAME) #=> true
+ * File.fnmatch(pattern, 'c:/a/b/c/foo', File::FNM_PATHNAME) #=> true
+ * File.fnmatch(pattern, 'a/.b/c/foo', File::FNM_PATHNAME) #=> false
+ * File.fnmatch(pattern, 'a/.b/c/foo', File::FNM_PATHNAME | File::FNM_DOTMATCH) #=> true
+ */
+static VALUE
+file_s_fnmatch(argc, argv, obj)
+ int argc;
+ VALUE *argv;
+ VALUE obj;
+{
+ VALUE pattern, path;
+ VALUE rflags;
+ int flags;
+
+ if (rb_scan_args(argc, argv, "21", &pattern, &path, &rflags) == 3)
+ flags = NUM2INT(rflags);
+ else
+ flags = 0;
+
+ StringValue(pattern);
+ StringValue(path);
+
+ if (fnmatch(RSTRING(pattern)->ptr, RSTRING(path)->ptr, flags) == 0)
+ return Qtrue;
+
+ return Qfalse;
+}
+
+/*
+ * Objects of class <code>Dir</code> are directory streams representing
+ * directories in the underlying file system. They provide a variety of
+ * ways to list directories and their contents. See also
+ * <code>File</code>.
+ *
+ * The directory used in these examples contains the two regular files
+ * (<code>config.h</code> and <code>main.rb</code>), the parent
+ * directory (<code>..</code>), and the directory itself
+ * (<code>.</code>).
+ */
+void
+Init_Dir()
+{
+ rb_cDir = rb_define_class("Dir", rb_cObject);
+
+ rb_include_module(rb_cDir, rb_mEnumerable);
+
+ rb_define_alloc_func(rb_cDir, dir_s_alloc);
+ rb_define_singleton_method(rb_cDir, "open", dir_s_open, 1);
+ rb_define_singleton_method(rb_cDir, "foreach", dir_foreach, 1);
+ rb_define_singleton_method(rb_cDir, "entries", dir_entries, 1);
+
+ rb_define_method(rb_cDir,"initialize", dir_initialize, 1);
+ rb_define_method(rb_cDir,"path", dir_path, 0);
+ rb_define_method(rb_cDir,"read", dir_read, 0);
+ rb_define_method(rb_cDir,"each", dir_each, 0);
+ rb_define_method(rb_cDir,"rewind", dir_rewind, 0);
+ rb_define_method(rb_cDir,"tell", dir_tell, 0);
+ rb_define_method(rb_cDir,"seek", dir_seek, 1);
+ rb_define_method(rb_cDir,"pos", dir_tell, 0);
+ rb_define_method(rb_cDir,"pos=", dir_set_pos, 1);
+ rb_define_method(rb_cDir,"close", dir_close, 0);
+
+ rb_define_singleton_method(rb_cDir,"chdir", dir_s_chdir, -1);
+ rb_define_singleton_method(rb_cDir,"getwd", dir_s_getwd, 0);
+ rb_define_singleton_method(rb_cDir,"pwd", dir_s_getwd, 0);
+ rb_define_singleton_method(rb_cDir,"chroot", dir_s_chroot, 1);
+ rb_define_singleton_method(rb_cDir,"mkdir", dir_s_mkdir, -1);
+ rb_define_singleton_method(rb_cDir,"rmdir", dir_s_rmdir, 1);
+ rb_define_singleton_method(rb_cDir,"delete", dir_s_rmdir, 1);
+ rb_define_singleton_method(rb_cDir,"unlink", dir_s_rmdir, 1);
+
+ rb_define_singleton_method(rb_cDir,"glob", dir_s_glob, -1);
+ rb_define_singleton_method(rb_cDir,"[]", dir_s_aref, -1);
+
+ rb_define_singleton_method(rb_cFile,"fnmatch", file_s_fnmatch, -1);
+ rb_define_singleton_method(rb_cFile,"fnmatch?", file_s_fnmatch, -1);
+
+ rb_file_const("FNM_NOESCAPE", INT2FIX(FNM_NOESCAPE));
+ rb_file_const("FNM_PATHNAME", INT2FIX(FNM_PATHNAME));
+ rb_file_const("FNM_DOTMATCH", INT2FIX(FNM_DOTMATCH));
+ rb_file_const("FNM_CASEFOLD", INT2FIX(FNM_CASEFOLD));
+ rb_file_const("FNM_SYSCASE", INT2FIX(FNM_SYSCASE));
+}
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