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- /* 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. */
- #define strrchr __strrchr
- #define strcoll __strcoll
- #define qsort __qsort
- #include <features.h>
- #include <stdlib.h>
- #include <string.h>
- #include <errno.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <unistd.h>
- #include <dirent.h>
- #include <malloc.h>
- #include <fnmatch.h>
- #define _GNU_SOURCE
- #include <glob.h>
- extern __ptr_t (*__glob_opendir_hook) __P ((const char *directory));
- extern void (*__glob_closedir_hook) __P ((__ptr_t stream));
- extern const char *(*__glob_readdir_hook) __P ((__ptr_t stream));
- 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,
- int add_slash));
- static int collated_compare __P ((const __ptr_t, const __ptr_t));
- #ifdef __GLOB64
- extern int glob_pattern_p(const char *pattern, int quote);
- #else
- /* Return nonzero if PATTERN contains any metacharacters.
- Metacharacters can be quoted with backslashes if QUOTE is nonzero. */
- int glob_pattern_p(const char *pattern, int quote)
- {
- const char *p;
- int open = 0;
- for (p = pattern; *p != '\0'; ++p)
- switch (*p)
- {
- case '?':
- case '*':
- return 1;
- case '\\':
- if (quote && p[1] != '\0')
- ++p;
- break;
- case '[':
- open = 1;
- break;
- case ']':
- if (open)
- return 1;
- break;
- }
- return 0;
- }
- #endif
- /* 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,
- flags & GLOB_MARK))
- {
- 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,
- flags & GLOB_MARK))
- {
- globfree (pglob);
- return GLOB_NOSPACE;
- }
- }
- }
- if (flags & GLOB_MARK)
- {
- /* Append slashes to directory names. glob_in_dir has already
- allocated the extra character for us. */
- int i;
- struct stat st;
- for (i = oldcount; i < pglob->gl_pathc; ++i)
- if (lstat (pglob->gl_pathv[i], &st) == 0 &&
- S_ISDIR (st.st_mode))
- __strcat (pglob->gl_pathv[i], "/");
- }
- if (!(flags & GLOB_NOSORT))
- /* Sort the vector. */
- qsort ((__ptr_t) &pglob->gl_pathv[oldcount],
- pglob->gl_pathc - oldcount,
- sizeof (char *), (__compar_fn_t)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 = pglob->gl_flags & GLOB_DOOFFS? pglob->gl_offs : 0;
- for (; 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 *) a;
- const char *const s2 = *(const char *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.
- If ADD_SLASH is non-zero, allocate one character more than
- necessary, so that a slash can be appended later. */
- static int
- prefix_array (dirname, array, n, add_slash)
- const char *dirname;
- char **array;
- size_t n;
- int add_slash;
- {
- 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 + (add_slash ? 1 : 0));
- 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;
- }
- /* 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;
- int meta;
- 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_ABORTED;
- }
- meta = glob_pattern_p (pattern, !(flags & GLOB_NOESCAPE));
- if (meta)
- flags |= GLOB_MAGCHAR;
- 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 (! (d->d_ino != 0))
- continue;
- name = d->d_name;
- #ifdef _DIRENT_HAVE_D_NAMLEN
- len = d->d_namlen;
- #else
- len = 0;
- #endif
- }
-
- if ((!meta && __strcmp (pattern, name) == 0)
- || 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);
- new->name[len] = '\0';
- new->next = names;
- names = new;
- ++nfound;
- if (!meta)
- break;
- }
- }
- 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);
- 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;
- {
- 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;
- }
|