initial import

1 files changed, 671 insertions, 0 deletions

diff --git a/posix/glob.c b/posix/glob.c
new file mode 100644
index 0000000..243730d
--- /dev/null
+++ b/posix/glob.c
@@ -0,0 +1,671 @@
+/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with this library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+/* AIX requires this to be the first thing in the file.  */
+#if defined (_AIX) && !defined (__GNUC__)
+ #pragma alloca
+#endif
+
+#ifdef	HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <errno.h>
+#include <sys/types.h>
+
+
+/* Comment out all this code if we are using the GNU C Library, and are not
+   actually compiling the library itself.  This code is part of the GNU C
+   Library, but also included in many other GNU distributions.  Compiling
+   and linking in this code is a waste when using the GNU C library
+   (especially if it is a shared library).  Rather than having every GNU
+   program understand `configure --with-gnu-libc' and omit the object files,
+   it is simpler to just do this in the source for each such file.  */
+
+#if defined (_LIBC) || !defined (__GNU_LIBRARY__)
+
+
+#ifdef	STDC_HEADERS
+#include <stddef.h>
+#endif
+
+#ifdef	HAVE_UNISTD_H
+#include <unistd.h>
+#ifndef POSIX
+#ifdef	_POSIX_VERSION
+#define	POSIX
+#endif
+#endif
+#endif
+
+#if !defined(__GNU_LIBRARY__) && !defined(STDC_HEADERS)
+extern int errno;
+#endif
+
+#ifndef	NULL
+#define	NULL	0
+#endif
+
+
+#if	defined (POSIX) || defined (HAVE_DIRENT_H) || defined (__GNU_LIBRARY__)
+#include <dirent.h>
+#ifndef	__GNU_LIBRARY__
+#define D_NAMLEN(d) strlen((d)->d_name)
+#else	/* GNU C library.  */
+#define D_NAMLEN(d) ((d)->d_namlen)
+#endif	/* Not GNU C library.  */
+#else	/* Not POSIX or HAVE_DIRENT_H.  */
+#define direct dirent
+#define D_NAMLEN(d) ((d)->d_namlen)
+#ifdef	HAVE_SYS_NDIR_H
+#include <sys/ndir.h>
+#endif	/* HAVE_SYS_NDIR_H */
+#ifdef	HAVE_SYS_DIR_H
+#include <sys/dir.h>
+#endif	/* HAVE_SYS_DIR_H */
+#ifdef HAVE_NDIR_H
+#include <ndir.h>
+#endif	/* HAVE_NDIR_H */
+#endif	/* POSIX or HAVE_DIRENT_H or __GNU_LIBRARY__.  */
+
+#if defined (POSIX) && !defined (__GNU_LIBRARY__)
+/* Posix does not require that the d_ino field be present, and some
+   systems do not provide it. */
+#define REAL_DIR_ENTRY(dp) 1
+#else
+#define REAL_DIR_ENTRY(dp) (dp->d_ino != 0)
+#endif /* POSIX */
+
+#if	(defined (STDC_HEADERS) || defined (__GNU_LIBRARY__))
+#include <stdlib.h>
+#include <string.h>
+#define	ANSI_STRING
+#else	/* No standard headers.  */
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#define	ANSI_STRING
+#else
+#include <strings.h>
+#endif
+#ifdef	HAVE_MEMORY_H
+#include <memory.h>
+#endif
+
+extern char *malloc (), *realloc ();
+extern void free ();
+
+extern void qsort ();
+extern void abort (), exit ();
+
+#endif	/* Standard headers.  */
+
+#ifndef	ANSI_STRING
+
+#ifndef	bzero
+extern void bzero ();
+#endif
+#ifndef	bcopy
+extern void bcopy ();
+#endif
+
+#define	memcpy(d, s, n)	bcopy ((s), (d), (n))
+#define	strrchr	rindex
+/* memset is only used for zero here, but let's be paranoid.  */
+#define	memset(s, better_be_zero, n) \
+  ((void) ((better_be_zero) == 0 ? (bzero((s), (n)), 0) : (abort(), 0)))
+#endif	/* Not ANSI_STRING.  */
+
+#ifndef	HAVE_STRCOLL
+#define	strcoll	strcmp
+#endif
+
+
+#ifndef	__GNU_LIBRARY__
+#ifdef	__GNUC__
+__inline
+#endif
+static char *
+my_realloc (p, n)
+     char *p;
+     unsigned int n;
+{
+  /* These casts are the for sake of the broken Ultrix compiler,
+     which warns of illegal pointer combinations otherwise.  */
+  if (p == NULL)
+    return (char *) malloc (n);
+  return (char *) realloc (p, n);
+}
+#define	realloc	my_realloc
+#endif
+
+
+#if	!defined(__alloca) && !defined(__GNU_LIBRARY__)
+
+#ifdef	__GNUC__
+#undef	alloca
+#define	alloca(n)	__builtin_alloca (n)
+#else	/* Not GCC.  */
+#if	defined (sparc) || defined (HAVE_ALLOCA_H)
+#include <alloca.h>
+#else	/* Not sparc or HAVE_ALLOCA_H.  */
+#ifndef	_AIX
+extern char *alloca ();
+#endif	/* Not _AIX.  */
+#endif	/* sparc or HAVE_ALLOCA_H.  */
+#endif	/* GCC.  */
+
+#define	__alloca	alloca
+
+#endif
+
+#ifndef	STDC_HEADERS
+#undef	size_t
+#define	size_t	unsigned int
+#endif
+
+/* Some system header files erroneously define these.
+   We want our own definitions from <fnmatch.h> to take precedence.  */
+#undef	FNM_PATHNAME
+#undef	FNM_NOESCAPE
+#undef	FNM_PERIOD
+#include <fnmatch.h>
+
+/* Some system header files erroneously define these.
+   We want our own definitions from <glob.h> to take precedence.  */
+#undef	GLOB_ERR
+#undef	GLOB_MARK
+#undef	GLOB_NOSORT
+#undef	GLOB_DOOFFS
+#undef	GLOB_NOCHECK
+#undef	GLOB_APPEND
+#undef	GLOB_NOESCAPE
+#undef	GLOB_PERIOD
+#include <glob.h>
+
+__ptr_t (*__glob_opendir_hook) __P ((const char *directory));
+const char *(*__glob_readdir_hook) __P ((__ptr_t stream));
+void (*__glob_closedir_hook) __P ((__ptr_t stream));
+
+static int glob_pattern_p __P ((const char *pattern, int quote));
+static int glob_in_dir __P ((const char *pattern, const char *directory,
+			     int flags,
+			     int (*errfunc) __P ((const char *, int)),
+			     glob_t *pglob));
+static int prefix_array __P ((const char *prefix, char **array, size_t n));
+static int collated_compare __P ((const __ptr_t, const __ptr_t));
+
+/* Do glob searching for PATTERN, placing results in PGLOB.
+   The bits defined above may be set in FLAGS.
+   If a directory cannot be opened or read and ERRFUNC is not nil,
+   it is called with the pathname that caused the error, and the
+   `errno' value from the failing call; if it returns non-zero
+   `glob' returns GLOB_ABEND; if it returns zero, the error is ignored.
+   If memory cannot be allocated for PGLOB, GLOB_NOSPACE is returned.
+   Otherwise, `glob' returns zero.  */
+int
+glob (pattern, flags, errfunc, pglob)
+     const char *pattern;
+     int flags;
+     int (*errfunc) __P ((const char *, int));
+     glob_t *pglob;
+{
+  const char *filename;
+  char *dirname;
+  size_t dirlen;
+  int status;
+  int oldcount;
+
+  if (pattern == NULL || pglob == NULL || (flags & ~__GLOB_FLAGS) != 0)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  /* Find the filename.  */
+  filename = strrchr (pattern, '/');
+  if (filename == NULL)
+    {
+      filename = pattern;
+      dirname = (char *) ".";
+      dirlen = 0;
+    }
+  else if (filename == pattern)
+    {
+      /* "/pattern".  */
+      dirname = (char *) "/";
+      dirlen = 1;
+      ++filename;
+    }
+  else
+    {
+      dirlen = filename - pattern;
+      dirname = (char *) __alloca (dirlen + 1);
+      memcpy (dirname, pattern, dirlen);
+      dirname[dirlen] = '\0';
+      ++filename;
+    }
+
+  if (filename[0] == '\0' && dirlen > 1)
+    /* "pattern/".  Expand "pattern", appending slashes.  */
+    {
+      int val = glob (dirname, flags | GLOB_MARK, errfunc, pglob);
+      if (val == 0)
+	pglob->gl_flags = (pglob->gl_flags & ~GLOB_MARK) | (flags & GLOB_MARK);
+      return val;
+    }
+
+  if (!(flags & GLOB_APPEND))
+    {
+      pglob->gl_pathc = 0;
+      pglob->gl_pathv = NULL;
+    }
+
+  oldcount = pglob->gl_pathc;
+
+  if (glob_pattern_p (dirname, !(flags & GLOB_NOESCAPE)))
+    {
+      /* The directory name contains metacharacters, so we
+	 have to glob for the directory, and then glob for
+	 the pattern in each directory found.  */
+      glob_t dirs;
+      register int i;
+
+      status = glob (dirname,
+		     ((flags & (GLOB_ERR | GLOB_NOCHECK | GLOB_NOESCAPE)) |
+		      GLOB_NOSORT),
+		     errfunc, &dirs);
+      if (status != 0)
+	return status;
+
+      /* We have successfully globbed the preceding directory name.
+	 For each name we found, call glob_in_dir on it and FILENAME,
+	 appending the results to PGLOB.  */
+      for (i = 0; i < dirs.gl_pathc; ++i)
+	{
+	  int oldcount;
+
+#ifdef	SHELL
+	  {
+	    /* Make globbing interruptible in the bash shell. */
+	    extern int interrupt_state;
+
+	    if (interrupt_state)
+	      {
+		globfree (&dirs);
+		globfree (&files);
+		return GLOB_ABEND;
+	      }
+	  }
+#endif /* SHELL.  */
+
+	  oldcount = pglob->gl_pathc;
+	  status = glob_in_dir (filename, dirs.gl_pathv[i],
+				(flags | GLOB_APPEND) & ~GLOB_NOCHECK,
+				errfunc, pglob);
+	  if (status == GLOB_NOMATCH)
+	    /* No matches in this directory.  Try the next.  */
+	    continue;
+
+	  if (status != 0)
+	    {
+	      globfree (&dirs);
+	      globfree (pglob);
+	      return status;
+	    }
+
+	  /* Stick the directory on the front of each name.  */
+	  if (prefix_array (dirs.gl_pathv[i],
+			    &pglob->gl_pathv[oldcount],
+			    pglob->gl_pathc - oldcount))
+	    {
+	      globfree (&dirs);
+	      globfree (pglob);
+	      return GLOB_NOSPACE;
+	    }
+	}
+
+      flags |= GLOB_MAGCHAR;
+
+      if (pglob->gl_pathc == oldcount)
+	/* No matches.  */
+	if (flags & GLOB_NOCHECK)
+	  {
+	    size_t len = strlen (pattern) + 1;
+	    char *patcopy = (char *) malloc (len);
+	    if (patcopy == NULL)
+	      return GLOB_NOSPACE;
+	    memcpy (patcopy, pattern, len);
+
+	    pglob->gl_pathv
+	      = (char **) realloc (pglob->gl_pathv,
+				   (pglob->gl_pathc +
+				    ((flags & GLOB_DOOFFS) ?
+				     pglob->gl_offs : 0) +
+				    1 + 1) *
+				   sizeof (char *));
+	    if (pglob->gl_pathv == NULL)
+	      {
+		free (patcopy);
+		return GLOB_NOSPACE;
+	      }
+
+	    if (flags & GLOB_DOOFFS)
+	      while (pglob->gl_pathc < pglob->gl_offs)
+		pglob->gl_pathv[pglob->gl_pathc++] = NULL;
+
+	    pglob->gl_pathv[pglob->gl_pathc++] = patcopy;
+	    pglob->gl_pathv[pglob->gl_pathc] = NULL;
+	    pglob->gl_flags = flags;
+	  }
+	else
+	  return GLOB_NOMATCH;
+    }
+  else
+    {
+      status = glob_in_dir (filename, dirname, flags, errfunc, pglob);
+      if (status != 0)
+	return status;
+
+      if (dirlen > 0)
+	{
+	  /* Stick the directory on the front of each name.  */
+	  if (prefix_array (dirname,
+			    &pglob->gl_pathv[oldcount],
+			    pglob->gl_pathc - oldcount))
+	    {
+	      globfree (pglob);
+	      return GLOB_NOSPACE;
+	    }
+	}
+    }
+
+  if (!(flags & GLOB_NOSORT))
+    /* Sort the vector.  */
+    qsort ((__ptr_t) & pglob->gl_pathv[oldcount],
+	   pglob->gl_pathc - oldcount,
+	   sizeof (char *), collated_compare);
+
+  return 0;
+}
+
+
+/* Free storage allocated in PGLOB by a previous `glob' call.  */
+void
+globfree (pglob)
+     register glob_t *pglob;
+{
+  if (pglob->gl_pathv != NULL)
+    {
+      register int i;
+      for (i = 0; i < pglob->gl_pathc; ++i)
+	if (pglob->gl_pathv[i] != NULL)
+	  free ((__ptr_t) pglob->gl_pathv[i]);
+      free ((__ptr_t) pglob->gl_pathv);
+    }
+}
+
+
+/* Do a collated comparison of A and B.  */
+static int
+collated_compare (a, b)
+     const __ptr_t a;
+     const __ptr_t b;
+{
+  const char *const s1 = *(const char *const * const) a;
+  const char *const s2 = *(const char *const * const) b;
+
+  if (s1 == s2)
+    return 0;
+  if (s1 == NULL)
+    return 1;
+  if (s2 == NULL)
+    return -1;
+  return strcoll (s1, s2);
+}
+
+
+/* Prepend DIRNAME to each of N members of ARRAY, replacing ARRAY's
+   elements in place.  Return nonzero if out of memory, zero if successful.
+   A slash is inserted between DIRNAME and each elt of ARRAY,
+   unless DIRNAME is just "/".  Each old element of ARRAY is freed.  */
+static int
+prefix_array (dirname, array, n)
+     const char *dirname;
+     char **array;
+     size_t n;
+{
+  register size_t i;
+  size_t dirlen = strlen (dirname);
+
+  if (dirlen == 1 && dirname[0] == '/')
+    /* DIRNAME is just "/", so normal prepending would get us "//foo".
+       We want "/foo" instead, so don't prepend any chars from DIRNAME.  */
+    dirlen = 0;
+
+  for (i = 0; i < n; ++i)
+    {
+      size_t eltlen = strlen (array[i]) + 1;
+      char *new = (char *) malloc (dirlen + 1 + eltlen);
+      if (new == NULL)
+	{
+	  while (i > 0)
+	    free ((__ptr_t) array[--i]);
+	  return 1;
+	}
+
+      memcpy (new, dirname, dirlen);
+      new[dirlen] = '/';
+      memcpy (&new[dirlen + 1], array[i], eltlen);
+      free ((__ptr_t) array[i]);
+      array[i] = new;
+    }
+
+  return 0;
+}
+
+
+/* Return nonzero if PATTERN contains any metacharacters.
+   Metacharacters can be quoted with backslashes if QUOTE is nonzero.  */
+static int
+glob_pattern_p (pattern, quote)
+     const char *pattern;
+     int quote;
+{
+  register const char *p;
+  int open = 0;
+
+  for (p = pattern; *p != '\0'; ++p)
+    switch (*p)
+      {
+      case '?':
+      case '*':
+	return 1;
+
+      case '\\':
+	if (quote)
+	  ++p;
+	break;
+
+      case '[':
+	open = 1;
+	break;
+
+      case ']':
+	if (open)
+	  return 1;
+	break;
+      }
+
+  return 0;
+}
+
+
+/* Like `glob', but PATTERN is a final pathname component,
+   and matches are searched for in DIRECTORY.
+   The GLOB_NOSORT bit in FLAGS is ignored.  No sorting is ever done.
+   The GLOB_APPEND flag is assumed to be set (always appends).  */
+static int
+glob_in_dir (pattern, directory, flags, errfunc, pglob)
+     const char *pattern;
+     const char *directory;
+     int flags;
+     int (*errfunc) __P ((const char *, int));
+     glob_t *pglob;
+{
+  __ptr_t stream;
+
+  struct globlink
+    {
+      struct globlink *next;
+      char *name;
+    };
+  struct globlink *names = NULL;
+  size_t nfound = 0;
+
+  if (!glob_pattern_p (pattern, !(flags & GLOB_NOESCAPE)))
+    {
+      stream = NULL;
+      flags |= GLOB_NOCHECK;
+    }
+  else
+    {
+      flags |= GLOB_MAGCHAR;
+
+      stream = (__glob_opendir_hook ? (*__glob_opendir_hook) (directory)
+		: (__ptr_t) opendir (directory));
+      if (stream == NULL)
+	{
+	  if ((errfunc != NULL && (*errfunc) (directory, errno)) ||
+	      (flags & GLOB_ERR))
+	    return GLOB_ABEND;
+	}
+      else
+	while (1)
+	  {
+	    const char *name;
+	    size_t len;
+
+	    if (__glob_readdir_hook)
+	      {
+		name = (*__glob_readdir_hook) (stream);
+		if (name == NULL)
+		  break;
+		len = 0;
+	      }
+	    else
+	      {
+		struct dirent *d = readdir ((DIR *) stream);
+		if (d == NULL)
+		  break;
+		if (! REAL_DIR_ENTRY (d))
+		  continue;
+		name = d->d_name;
+#ifdef	HAVE_D_NAMLEN
+		len = d->d_namlen;
+#else
+		len = 0;
+#endif
+	      }
+		
+	    if (fnmatch (pattern, name,
+			 (!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0) |
+			 ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0)) == 0)
+	      {
+		struct globlink *new
+		  = (struct globlink *) __alloca (sizeof (struct globlink));
+		if (len == 0)
+		  len = strlen (name);
+		new->name
+		  = (char *) malloc (len + ((flags & GLOB_MARK) ? 1 : 0) + 1);
+		if (new->name == NULL)
+		  goto memory_error;
+		memcpy ((__ptr_t) new->name, name, len);
+		if (flags & GLOB_MARK)
+		  new->name[len++] = '/';
+		new->name[len] = '\0';
+		new->next = names;
+		names = new;
+		++nfound;
+	      }
+	  }
+    }
+
+  if (nfound == 0 && (flags & GLOB_NOCHECK))
+    {
+      size_t len = strlen (pattern);
+      nfound = 1;
+      names = (struct globlink *) __alloca (sizeof (struct globlink));
+      names->next = NULL;
+      names->name = (char *) malloc (len + ((flags & GLOB_MARK) ? 1 : 0) + 1);
+      if (names->name == NULL)
+	goto memory_error;
+      memcpy (names->name, pattern, len);
+      if (flags & GLOB_MARK)
+	names->name[len++] = '/';
+      names->name[len] = '\0';
+    }
+
+  pglob->gl_pathv
+    = (char **) realloc (pglob->gl_pathv,
+			 (pglob->gl_pathc +
+			  ((flags & GLOB_DOOFFS) ? pglob->gl_offs : 0) +
+			  nfound + 1) *
+			 sizeof (char *));
+  if (pglob->gl_pathv == NULL)
+    goto memory_error;
+
+  if (flags & GLOB_DOOFFS)
+    while (pglob->gl_pathc < pglob->gl_offs)
+      pglob->gl_pathv[pglob->gl_pathc++] = NULL;
+
+  for (; names != NULL; names = names->next)
+    pglob->gl_pathv[pglob->gl_pathc++] = names->name;
+  pglob->gl_pathv[pglob->gl_pathc] = NULL;
+
+  pglob->gl_flags = flags;
+
+  if (stream != NULL)
+    {
+      int save = errno;
+      if (__glob_closedir_hook)
+	(*__glob_closedir_hook) (stream);
+      else
+	(void) closedir ((DIR *) stream);
+      errno = save;
+    }
+  return nfound == 0 ? GLOB_NOMATCH : 0;
+
+ memory_error:
+  {
+    int save = errno;
+    if (__glob_closedir_hook)
+      (*__glob_closedir_hook) (stream);
+    else
+      (void) closedir ((DIR *) stream);
+    errno = save;
+  }
+  while (names != NULL)
+    {
+      if (names->name != NULL)
+	free ((__ptr_t) names->name);
+      names = names->next;
+    }
+  return GLOB_NOSPACE;
+}
+
+#endif	/* _LIBC or not __GNU_LIBRARY__.  */