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rpm/misc/glob.c

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/* Copyright (C) 1991,92,93,94,95,96,97,98,99 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* AIX requires this to be the first thing in the file. */
#if defined _AIX && !defined __GNUC__
#pragma alloca
#endif
# include "system.h"
# include <stdlib.h>
# include <string.h>
# include <pwd.h>
# include <assert.h>
# include <sys/stat.h> /* S_ISDIR */
#define __alloca alloca
#define __stat stat
#define NAMLEN(_d) NLENGTH(_d)
#if (defined POSIX || defined WINDOWS32) && !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 */
#include <errno.h>
#ifndef __set_errno
# define __set_errno(val) errno = (val)
#endif
/* Outcomment the following line for production quality code. */
/* #define NDEBUG 1 */
#define GLOB_INTERFACE_VERSION 1
static inline const char *next_brace_sub __P ((const char *begin));
static int glob_in_dir __P ((const char *pattern, const char *directory,
int flags,
int (*errfunc) (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));
/* Find the end of the sub-pattern in a brace expression. We define
this as an inline function if the compiler permits. */
static inline const char *
next_brace_sub (const char *begin)
{
unsigned int depth = 0;
const char *cp = begin;
while (1)
{
if (depth == 0)
{
if (*cp != ',' && *cp != '}' && *cp != '\0')
{
if (*cp == '{')
++depth;
++cp;
continue;
}
}
else
{
while (*cp != '\0' && (*cp != '}' || depth > 0))
{
if (*cp == '}')
--depth;
++cp;
}
if (*cp == '\0')
/* An incorrectly terminated brace expression. */
return NULL;
continue;
}
break;
}
return cp;
}
static int __glob_pattern_p (const char *pattern, int quote);
/* 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_ABORTED; 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 (const char *pattern, int flags,
int (*errfunc) __P ((const char *, int)), glob_t *pglob)
{
const char *filename;
const char *dirname;
size_t dirlen;
int status;
int oldcount;
if (pattern == NULL || pglob == NULL || (flags & ~__GLOB_FLAGS) != 0)
{
__set_errno (EINVAL);
return -1;
}
if (flags & GLOB_BRACE)
{
const char *begin = strchr (pattern, '{');
if (begin != NULL)
{
/* Allocate working buffer large enough for our work. Note that
we have at least an opening and closing brace. */
int firstc;
char *alt_start;
const char *p;
const char *next;
const char *rest;
size_t rest_len;
#ifdef __GNUC__
char onealt[strlen (pattern) - 1];
#else
char *onealt = (char *) xmalloc (strlen (pattern) - 1);
if (onealt == NULL)
{
if (!(flags & GLOB_APPEND))
globfree (pglob);
return GLOB_NOSPACE;
}
#endif
/* We know the prefix for all sub-patterns. */
#ifdef HAVE_MEMPCPY
alt_start = mempcpy (onealt, pattern, begin - pattern);
#else
memcpy (onealt, pattern, begin - pattern);
alt_start = &onealt[begin - pattern];
#endif
/* Find the first sub-pattern and at the same time find the
rest after the closing brace. */
next = next_brace_sub (begin + 1);
if (next == NULL)
{
/* It is an illegal expression. */
#ifndef __GNUC__
free (onealt);
#endif
return glob (pattern, flags & ~GLOB_BRACE, errfunc, pglob);
}
/* Now find the end of the whole brace expression. */
rest = next;
while (*rest != '}')
{
rest = next_brace_sub (rest + 1);
if (rest == NULL)
{
/* It is an illegal expression. */
#ifndef __GNUC__
free (onealt);
#endif
return glob (pattern, flags & ~GLOB_BRACE, errfunc, pglob);
}
}
/* Please note that we now can be sure the brace expression
is well-formed. */
rest_len = strlen (++rest) + 1;
/* We have a brace expression. BEGIN points to the opening {,
NEXT points past the terminator of the first element, and END
points past the final }. We will accumulate result names from
recursive runs for each brace alternative in the buffer using
GLOB_APPEND. */
if (!(flags & GLOB_APPEND))
{
/* This call is to set a new vector, so clear out the
vector so we can append to it. */
pglob->gl_pathc = 0;
pglob->gl_pathv = NULL;
}
firstc = pglob->gl_pathc;
p = begin + 1;
while (1)
{
int result;
/* Construct the new glob expression. */
#ifdef HAVE_MEMPCPY
mempcpy (mempcpy (alt_start, p, next - p), rest, rest_len);
#else
memcpy (alt_start, p, next - p);
memcpy (&alt_start[next - p], rest, rest_len);
#endif
result = glob (onealt,
((flags & ~(GLOB_NOCHECK|GLOB_NOMAGIC))
| GLOB_APPEND), errfunc, pglob);
/* If we got an error, return it. */
if (result && result != GLOB_NOMATCH)
{
#ifndef __GNUC__
free (onealt);
#endif
if (!(flags & GLOB_APPEND))
globfree (pglob);
return result;
}
if (*next == '}')
/* We saw the last entry. */
break;
p = next + 1;
next = next_brace_sub (p);
assert (next != NULL);
}
#ifndef __GNUC__
free (onealt);
#endif
if (pglob->gl_pathc != firstc)
/* We found some entries. */
return 0;
else if (!(flags & (GLOB_NOCHECK|GLOB_NOMAGIC)))
return GLOB_NOMATCH;
}
}
/* Find the filename. */
filename = strrchr (pattern, '/');
#if defined __MSDOS__ || defined WINDOWS32
/* The case of "d:pattern". Since `:' is not allowed in
file names, we can safely assume that wherever it
happens in pattern, it signals the filename part. This
is so we could some day support patterns like "[a-z]:foo". */
if (filename == NULL)
filename = strchr (pattern, ':');
#endif /* __MSDOS__ || WINDOWS32 */
if (filename == NULL)
{
/* This can mean two things: a simple name or "~name". The latter
case is nothing but a notation for a directory. */
if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && pattern[0] == '~')
{
dirname = pattern;
dirlen = strlen (pattern);
/* Set FILENAME to NULL as a special flag. This is ugly but
other solutions would require much more code. We test for
this special case below. */
filename = NULL;
}
else
{
filename = pattern;
#ifdef _AMIGA
dirname = "";
#else
dirname = ".";
#endif
dirlen = 0;
}
}
else if (filename == pattern)
{
/* "/pattern". */
dirname = "/";
dirlen = 1;
++filename;
}
else
{
char *newp;
dirlen = filename - pattern;
#if defined __MSDOS__ || defined WINDOWS32
if (*filename == ':'
|| (filename > pattern + 1 && filename[-1] == ':'))
{
char *drive_spec;
++dirlen;
drive_spec = (char *) __alloca (dirlen + 1);
#ifdef HAVE_MEMPCPY
*((char *) mempcpy (drive_spec, pattern, dirlen)) = '\0';
#else
memcpy (drive_spec, pattern, dirlen);
drive_spec[dirlen] = '\0';
#endif
/* For now, disallow wildcards in the drive spec, to
prevent infinite recursion in glob. */
if (__glob_pattern_p (drive_spec, !(flags & GLOB_NOESCAPE)))
return GLOB_NOMATCH;
/* If this is "d:pattern", we need to copy `:' to DIRNAME
as well. If it's "d:/pattern", don't remove the slash
from "d:/", since "d:" and "d:/" are not the same.*/
}
#endif
newp = (char *) __alloca (dirlen + 1);
#ifdef HAVE_MEMPCPY
*((char *) mempcpy (newp, pattern, dirlen)) = '\0';
#else
memcpy (newp, pattern, dirlen);
newp[dirlen] = '\0';
#endif
dirname = newp;
++filename;
if (filename[0] == '\0'
#if defined __MSDOS__ || defined WINDOWS32
&& dirname[dirlen - 1] != ':'
&& (dirlen < 3 || dirname[dirlen - 2] != ':'
|| dirname[dirlen - 1] != '/')
#endif
&& 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;
#ifndef VMS
if ((flags & (GLOB_TILDE|GLOB_TILDE_CHECK)) && dirname[0] == '~')
{
if (dirname[1] == '\0' || dirname[1] == '/')
{
/* Look up home directory. */
const char *home_dir = getenv ("HOME");
# ifdef _AMIGA
if (home_dir == NULL || home_dir[0] == '\0')
home_dir = "SYS:";
# else
# ifdef WINDOWS32
if (home_dir == NULL || home_dir[0] == '\0')
home_dir = "c:/users/default"; /* poor default */
# else
if (home_dir == NULL || home_dir[0] == '\0')
{
int success;
char *name;
# if defined HAVE_GETLOGIN_R || defined _LIBC
size_t buflen = sysconf (_SC_LOGIN_NAME_MAX) + 1;
if (buflen == 0)
/* `sysconf' does not support _SC_LOGIN_NAME_MAX. Try
a moderate value. */
buflen = 20;
name = (char *) __alloca (buflen);
success = getlogin_r (name, buflen) >= 0;
# else
success = (name = getlogin ()) != NULL;
# endif
if (success)
{
struct passwd *p;
# if defined HAVE_GETPWNAM_R || defined _LIBC
size_t pwbuflen = sysconf (_SC_GETPW_R_SIZE_MAX);
char *pwtmpbuf;
struct passwd pwbuf;
int save = errno;
if (pwbuflen == -1)
/* `sysconf' does not support _SC_GETPW_R_SIZE_MAX.
Try a moderate value. */
pwbuflen = 1024;
pwtmpbuf = (char *) __alloca (pwbuflen);
while (getpwnam_r (name, &pwbuf, pwtmpbuf, pwbuflen, &p)
!= 0)
{
if (errno != ERANGE)
{
p = NULL;
break;
}
pwbuflen *= 2;
pwtmpbuf = (char *) __alloca (pwbuflen);
__set_errno (save);
}
# else
p = getpwnam (name);
# endif
if (p != NULL)
home_dir = p->pw_dir;
}
}
if (home_dir == NULL || home_dir[0] == '\0')
{
if (flags & GLOB_TILDE_CHECK)
return GLOB_NOMATCH;
else
home_dir = "~"; /* No luck. */
}
# endif /* WINDOWS32 */
# endif
/* Now construct the full directory. */
if (dirname[1] == '\0')
dirname = home_dir;
else
{
char *newp;
size_t home_len = strlen (home_dir);
newp = (char *) __alloca (home_len + dirlen);
# ifdef HAVE_MEMPCPY
mempcpy (mempcpy (newp, home_dir, home_len),
&dirname[1], dirlen);
# else
memcpy (newp, home_dir, home_len);
memcpy (&newp[home_len], &dirname[1], dirlen);
# endif
dirname = newp;
}
}
# if !defined _AMIGA && !defined WINDOWS32
else
{
char *end_name = strchr (dirname, '/');
const char *user_name;
const char *home_dir;
if (end_name == NULL)
user_name = dirname + 1;
else
{
char *newp;
newp = (char *) __alloca (end_name - dirname);
# ifdef HAVE_MEMPCPY
*((char *) mempcpy (newp, dirname + 1, end_name - dirname))
= '\0';
# else
memcpy (newp, dirname + 1, end_name - dirname);
newp[end_name - dirname - 1] = '\0';
# endif
user_name = newp;
}
/* Look up specific user's home directory. */
{
struct passwd *p;
# if defined HAVE_GETPWNAM_R || defined _LIBC
size_t buflen = sysconf (_SC_GETPW_R_SIZE_MAX);
char *pwtmpbuf;
struct passwd pwbuf;
int save = errno;
if (buflen == -1)
/* `sysconf' does not support _SC_GETPW_R_SIZE_MAX. Try a
moderate value. */
buflen = 1024;
pwtmpbuf = (char *) __alloca (buflen);
while (getpwnam_r (user_name, &pwbuf, pwtmpbuf, buflen, &p) != 0)
{
if (errno != ERANGE)
{
p = NULL;
break;
}
buflen *= 2;
pwtmpbuf = __alloca (buflen);
__set_errno (save);
}
# else
p = getpwnam (user_name);
# endif
if (p != NULL)
home_dir = p->pw_dir;
else
home_dir = NULL;
}
/* If we found a home directory use this. */
if (home_dir != NULL)
{
char *newp;
size_t home_len = strlen (home_dir);
size_t rest_len = end_name == NULL ? 0 : strlen (end_name);
newp = (char *) __alloca (home_len + rest_len + 1);
# ifdef HAVE_MEMPCPY
*((char *) mempcpy (mempcpy (newp, home_dir, home_len),
end_name, rest_len)) = '\0';
# else
memcpy (newp, home_dir, home_len);
memcpy (&newp[home_len], end_name, rest_len);
newp[home_len + rest_len] = '\0';
# endif
dirname = newp;
}
else
if (flags & GLOB_TILDE_CHECK)
/* We have to regard it as an error if we cannot find the
home directory. */
return GLOB_NOMATCH;
}
# endif /* Not Amiga && not WINDOWS32. */
}
#endif /* Not VMS. */
/* Now test whether we looked for "~" or "~NAME". In this case we
can give the answer now. */
if (filename == NULL)
{
struct stat st;
/* Return the directory if we don't check for error or if it exists. */
if ((flags & GLOB_NOCHECK)
|| (((flags & GLOB_ALTDIRFUNC)
? (*pglob->gl_stat) (dirname, &st)
: __stat (dirname, &st)) == 0
&& S_ISDIR (st.st_mode)))
{
pglob->gl_pathv
= (char **) xrealloc (pglob->gl_pathv,
(pglob->gl_pathc +
((flags & GLOB_DOOFFS) ?
pglob->gl_offs : 0) +
1 + 1) *
sizeof (char *));
if (pglob->gl_pathv == NULL)
return GLOB_NOSPACE;
if (flags & GLOB_DOOFFS)
while (pglob->gl_pathc < pglob->gl_offs)
pglob->gl_pathv[pglob->gl_pathc++] = NULL;
#if defined HAVE_STRDUP || defined _LIBC
pglob->gl_pathv[pglob->gl_pathc] = xstrdup (dirname);
#else
{
size_t len = strlen (dirname) + 1;
char *dircopy = xmalloc (len);
if (dircopy != NULL)
pglob->gl_pathv[pglob->gl_pathc] = memcpy (dircopy, dirname,
len);
}
#endif
if (pglob->gl_pathv[pglob->gl_pathc] == NULL)
{
free (pglob->gl_pathv);
return GLOB_NOSPACE;
}
pglob->gl_pathv[++pglob->gl_pathc] = NULL;
pglob->gl_flags = flags;
return 0;
}
/* Not found. */
return GLOB_NOMATCH;
}
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;
if ((flags & GLOB_ALTDIRFUNC) != 0)
{
/* Use the alternative access functions also in the recursive
call. */
dirs.gl_opendir = pglob->gl_opendir;
dirs.gl_readdir = pglob->gl_readdir;
dirs.gl_closedir = pglob->gl_closedir;
dirs.gl_stat = pglob->gl_stat;
dirs.gl_lstat = pglob->gl_lstat;
}
status = glob (dirname,
((flags & (GLOB_ERR | GLOB_NOCHECK | GLOB_NOESCAPE
| GLOB_ALTDIRFUNC))
| GLOB_NOSORT | GLOB_ONLYDIR),
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 old_pathc;
#ifdef SHELL
{
/* Make globbing interruptible in the bash shell. */
extern int interrupt_state;
if (interrupt_state)
{
globfree (&dirs);
globfree (&files);
return GLOB_ABORTED;
}
}
#endif /* SHELL. */
old_pathc = pglob->gl_pathc;
status = glob_in_dir (filename, dirs.gl_pathv[i],
((flags | GLOB_APPEND)
& ~(GLOB_NOCHECK | GLOB_ERR)),
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[old_pathc],
pglob->gl_pathc - old_pathc))
{
globfree (&dirs);
globfree (pglob);
return GLOB_NOSPACE;
}
}
flags |= GLOB_MAGCHAR;
/* We have ignored the GLOB_NOCHECK flag in the `glob_in_dir' calls.
But if we have not found any matching entry and thie GLOB_NOCHECK
flag was set we must return the list consisting of the disrectory
names followed by the filename. */
if (pglob->gl_pathc == oldcount)
{
/* No matches. */
if (flags & GLOB_NOCHECK)
{
size_t filename_len = strlen (filename) + 1;
char **new_pathv;
struct stat st;
/* This is an pessimistic guess about the size. */
pglob->gl_pathv
= (char **) xrealloc (pglob->gl_pathv,
(pglob->gl_pathc +
((flags & GLOB_DOOFFS) ?
pglob->gl_offs : 0) +
dirs.gl_pathc + 1) *
sizeof (char *));
if (pglob->gl_pathv == NULL)
{
globfree (&dirs);
return GLOB_NOSPACE;
}
if (flags & GLOB_DOOFFS)
while (pglob->gl_pathc < pglob->gl_offs)
pglob->gl_pathv[pglob->gl_pathc++] = NULL;
for (i = 0; i < dirs.gl_pathc; ++i)
{
const char *dir = dirs.gl_pathv[i];
size_t dir_len = strlen (dir);
/* First check whether this really is a directory. */
if (((flags & GLOB_ALTDIRFUNC)
? (*pglob->gl_stat) (dir, &st) : __stat (dir, &st)) != 0
|| !S_ISDIR (st.st_mode))
/* No directory, ignore this entry. */
continue;
pglob->gl_pathv[pglob->gl_pathc] = xmalloc (dir_len + 1
+ filename_len);
if (pglob->gl_pathv[pglob->gl_pathc] == NULL)
{
globfree (&dirs);
globfree (pglob);
return GLOB_NOSPACE;
}
#ifdef HAVE_MEMPCPY
mempcpy (mempcpy (mempcpy (pglob->gl_pathv[pglob->gl_pathc],
dir, dir_len),
"/", 1),
filename, filename_len);
#else
memcpy (pglob->gl_pathv[pglob->gl_pathc], dir, dir_len);
pglob->gl_pathv[pglob->gl_pathc][dir_len] = '/';
memcpy (&pglob->gl_pathv[pglob->gl_pathc][dir_len + 1],
filename, filename_len);
#endif
++pglob->gl_pathc;
}
pglob->gl_pathv[pglob->gl_pathc] = NULL;
pglob->gl_flags = flags;
/* Now we know how large the gl_pathv vector must be. */
new_pathv = (char **) xrealloc (pglob->gl_pathv,
((pglob->gl_pathc + 1)
* sizeof (char *)));
if (new_pathv != NULL)
pglob->gl_pathv = new_pathv;
}
else
return GLOB_NOMATCH;
}
globfree (&dirs);
}
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. */
int ignore = oldcount;
if ((flags & GLOB_DOOFFS) && ignore < pglob->gl_offs)
ignore = pglob->gl_offs;
if (prefix_array (dirname,
&pglob->gl_pathv[ignore],
pglob->gl_pathc - ignore))
{
globfree (pglob);
return GLOB_NOSPACE;
}
}
}
if (flags & GLOB_MARK)
{
/* Append slashes to directory names. */
int i;
struct stat st;
for (i = oldcount; i < pglob->gl_pathc; ++i)
if (((flags & GLOB_ALTDIRFUNC)
? (*pglob->gl_stat) (pglob->gl_pathv[i], &st)
: __stat (pglob->gl_pathv[i], &st)) == 0
&& S_ISDIR (st.st_mode))
{
size_t len = strlen (pglob->gl_pathv[i]) + 2;
char *new = xrealloc (pglob->gl_pathv[i], len);
if (new == NULL)
{
globfree (pglob);
return GLOB_NOSPACE;
}
strcpy (&new[len - 2], "/");
pglob->gl_pathv[i] = new;
}
}
if (!(flags & GLOB_NOSORT))
{
/* Sort the vector. */
int non_sort = oldcount;
if ((flags & GLOB_DOOFFS) && pglob->gl_offs > oldcount)
non_sort = pglob->gl_offs;
qsort ((__ptr_t) &pglob->gl_pathv[non_sort],
pglob->gl_pathc - non_sort,
sizeof (char *), collated_compare);
}
return 0;
}
/* Free storage allocated in PGLOB by a previous `glob' call. */
void
globfree (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 (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 (const char *dirname, char **array, size_t n)
{
register size_t i;
size_t dirlen = strlen (dirname);
#if defined __MSDOS__ || defined WINDOWS32
int sep_char = '/';
# define DIRSEP_CHAR sep_char
#else
# define DIRSEP_CHAR '/'
#endif
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;
#if defined __MSDOS__ || defined WINDOWS32
else if (dirlen > 1)
{
if (dirname[dirlen - 1] == '/')
/* DIRNAME is "d:/". Don't prepend the slash from DIRNAME. */
--dirlen;
else if (dirname[dirlen - 1] == ':')
{
/* DIRNAME is "d:". Use `:' instead of `/'. */
--dirlen;
sep_char = ':';
}
}
#endif
for (i = 0; i < n; ++i)
{
size_t eltlen = strlen (array[i]) + 1;
char *new = (char *) xmalloc (dirlen + 1 + eltlen);
if (new == NULL)
{
while (i > 0)
free ((__ptr_t) array[--i]);
return 1;
}
#ifdef HAVE_MEMPCPY
{
char *endp = (char *) mempcpy (new, dirname, dirlen);
*endp++ = DIRSEP_CHAR;
mempcpy (endp, array[i], eltlen);
}
#else
memcpy (new, dirname, dirlen);
new[dirlen] = DIRSEP_CHAR;
memcpy (&new[dirlen + 1], array[i], eltlen);
#endif
free ((__ptr_t) array[i]);
array[i] = new;
}
return 0;
}
/* We must not compile this function twice. */
#if !defined _LIBC || !defined NO_GLOB_PATTERN_P
/* Return nonzero if PATTERN contains any metacharacters.
Metacharacters can be quoted with backslashes if QUOTE is nonzero. */
static int
__glob_pattern_p (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[1] != '\0')
++p;
break;
case '[':
open = 1;
break;
case ']':
if (open)
return 1;
break;
}
return 0;
}
# ifdef _LIBC
weak_alias (__glob_pattern_p, glob_pattern_p)
# endif
#endif
/* 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 (const char *pattern, const char *directory, int flags,
int (*errfunc) __P ((const char *, int)), glob_t *pglob)
{
__ptr_t stream = NULL;
struct globlink
{
struct globlink *next;
char *name;
};
struct globlink *names = NULL;
size_t nfound;
int meta;
int save;
meta = __glob_pattern_p (pattern, !(flags & GLOB_NOESCAPE));
if (meta == 0)
{
if (flags & (GLOB_NOCHECK|GLOB_NOMAGIC))
/* We need not do any tests. The PATTERN contains no meta
characters and we must not return an error therefore the
result will always contain exactly one name. */
flags |= GLOB_NOCHECK;
else
{
/* Since we use the normal file functions we can also use stat()
to verify the file is there. */
struct stat st;
size_t patlen = strlen (pattern);
size_t dirlen = strlen (directory);
char *fullname = (char *) __alloca (dirlen + 1 + patlen + 1);
# ifdef HAVE_MEMPCPY
mempcpy (mempcpy (mempcpy (fullname, directory, dirlen),
"/", 1),
pattern, patlen + 1);
# else
memcpy (fullname, directory, dirlen);
fullname[dirlen] = '/';
memcpy (&fullname[dirlen + 1], pattern, patlen + 1);
# endif
if (((flags & GLOB_ALTDIRFUNC)
? (*pglob->gl_stat) (fullname, &st)
: __stat (fullname, &st)) == 0)
/* We found this file to be existing. Now tell the rest
of the function to copy this name into the result. */
flags |= GLOB_NOCHECK;
}
nfound = 0;
}
else
{
if (pattern[0] == '\0')
{
/* This is a special case for matching directories like in
"*a/". */
names = (struct globlink *) __alloca (sizeof (struct globlink));
names->name = (char *) xmalloc (1);
if (names->name == NULL)
goto memory_error;
names->name[0] = '\0';
names->next = NULL;
nfound = 1;
meta = 0;
}
else
{
stream = ((flags & GLOB_ALTDIRFUNC)
? (*pglob->gl_opendir) (directory)
: (__ptr_t) opendir (directory));
if (stream == NULL)
{
if (errno != ENOTDIR
&& ((errfunc != NULL && (*errfunc) (directory, errno))
|| (flags & GLOB_ERR)))
return GLOB_ABORTED;
nfound = 0;
meta = 0;
}
else
{
int fnm_flags = ((!(flags & GLOB_PERIOD) ? FNM_PERIOD : 0)
| ((flags & GLOB_NOESCAPE) ? FNM_NOESCAPE : 0)
#if defined _AMIGA || defined VMS
| FNM_CASEFOLD
#endif
);
nfound = 0;
flags |= GLOB_MAGCHAR;
while (1)
{
const char *name;
size_t len;
struct dirent *d = ((flags & GLOB_ALTDIRFUNC)
? (*pglob->gl_readdir) (stream)
: readdir ((DIR *) stream));
if (d == NULL)
break;
if (! REAL_DIR_ENTRY (d))
continue;
#ifdef HAVE_D_TYPE
/* If we shall match only directories use the information
provided by the dirent call if possible. */
if ((flags & GLOB_ONLYDIR)
&& d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
continue;
#endif
name = d->d_name;
if (fnmatch (pattern, name, fnm_flags) == 0)
{
struct globlink *new = (struct globlink *)
__alloca (sizeof (struct globlink));
len = NAMLEN (d);
new->name = (char *) xmalloc (len + 1);
if (new->name == NULL)
goto memory_error;
#ifdef HAVE_MEMPCPY
*((char *) mempcpy ((__ptr_t) new->name, name, len))
= '\0';
#else
memcpy ((__ptr_t) new->name, name, len);
new->name[len] = '\0';
#endif
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 *) xmalloc (len + 1);
if (names->name == NULL)
goto memory_error;
#ifdef HAVE_MEMPCPY
*((char *) mempcpy (names->name, pattern, len)) = '\0';
#else
memcpy (names->name, pattern, len);
names->name[len] = '\0';
#endif
}
if (nfound != 0)
{
pglob->gl_pathv
= (char **) xrealloc (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;
}
save = errno;
if (stream != NULL)
{
if (flags & GLOB_ALTDIRFUNC)
(*pglob->gl_closedir) (stream);
else
closedir ((DIR *) stream);
}
__set_errno (save);
return nfound == 0 ? GLOB_NOMATCH : 0;
memory_error:
{
int save = errno;
if (flags & GLOB_ALTDIRFUNC)
(*pglob->gl_closedir) (stream);
else
closedir ((DIR *) stream);
__set_errno (save);
}
while (names != NULL)
{
if (names->name != NULL)
free ((__ptr_t) names->name);
names = names->next;
}
return GLOB_NOSPACE;
}
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