-/* File-name wildcard pattern matching for GNU.
- Copyright (C) 1985, 1988, 1989 Free Software Foundation, Inc.
+/* glob.c -- file-name wildcard pattern matching for Bash.
- This program is free software; you can redistribute it and/or modify
+ Copyright (C) 1985-2009 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne-Again SHell.
+
+ Bash is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
- This program is distributed in the hope that it will be useful,
+ Bash 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 General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ along with Bash. If not, see <http://www.gnu.org/licenses/>.
+*/
/* To whomever it may concern: I have never seen the code which most
Unix programs use to perform this function. I wrote this from scratch
#pragma alloca
#endif /* _AIX && RISC6000 && !__GNUC__ */
+#include "bashtypes.h"
+
#if defined (HAVE_UNISTD_H)
# include <unistd.h>
#endif
-#if defined (HAVE_STDLIB_H)
-# include <stdlib.h>
-#else
-# if defined (SHELL)
-# include "ansi_stdlib.h"
-# endif /* SHELL */
-#endif
+#include "bashansi.h"
+#include "posixdir.h"
+#include "posixstat.h"
+#include "shmbutil.h"
+#include "xmalloc.h"
-#include <sys/types.h>
-
-#if defined (HAVE_DIRENT_H)
-# include <dirent.h>
-# define D_NAMLEN(d) strlen ((d)->d_name)
-#else /* !HAVE_DIRENT_H */
-# define D_NAMLEN(d) ((d)->d_namlen)
-# if defined (HAVE_SYS_NDIR_H)
-# include <sys/ndir.h>
-# endif
-# if defined (HAVE_SYS_DIR_H)
-# include <sys/dir.h>
-# endif /* HAVE_SYS_DIR_H */
-# if defined (HAVE_NDIR_H)
-# include <ndir.h>
-# endif
-# if !defined (dirent)
-# define dirent direct
-# endif
-#endif /* !HAVE_DIRENT_H */
-
-#if defined (_POSIX_SOURCE)
-/* 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_SOURCE */
+#include "filecntl.h"
+#if !defined (F_OK)
+# define F_OK 0
+#endif
-#if defined (HAVE_STRING_H)
-# include <string.h>
-#else /* !HAVE_STRING_H */
-# include <strings.h>
-#endif /* !HAVE_STRING_H */
+#include "stdc.h"
+#include "memalloc.h"
-#if !defined (HAVE_BCOPY)
-# define bcopy(s, d, n) ((void) memcpy ((d), (s), (n)))
-#endif /* !HAVE_BCOPY */
+#include <signal.h>
-/* If the opendir () on your system lets you open non-directory files,
- then we consider that not robust. */
-#if defined (OPENDIR_NOT_ROBUST)
-# if defined (SHELL)
-# include "posixstat.h"
-# else /* !SHELL */
-# include <sys/stat.h>
-# endif /* !SHELL */
-#endif /* OPENDIR_NOT_ROBUST */
+#include "shell.h"
-#include "memalloc.h"
-#include "fnmatch.h"
+#include "glob.h"
+#include "strmatch.h"
-#if !defined (HAVE_STDLIB_H) && !defined (SHELL)
-extern char *malloc (), *realloc ();
-extern void free ();
-#endif /* !HAVE_STDLIB_H */
+#if !defined (HAVE_BCOPY) && !defined (bcopy)
+# define bcopy(s, d, n) ((void) memcpy ((d), (s), (n)))
+#endif /* !HAVE_BCOPY && !bcopy */
#if !defined (NULL)
# if defined (__STDC__)
# endif /* __STDC__ */
#endif /* !NULL */
-#if defined (SHELL)
-extern int interrupt_state;
-#endif /* SHELL */
+#if !defined (FREE)
+# define FREE(x) if (x) free (x)
+#endif
+
+/* Don't try to alloca() more than this much memory for `struct globval'
+ in glob_vector() */
+#ifndef ALLOCA_MAX
+# define ALLOCA_MAX 100000
+#endif
+
+struct globval
+ {
+ struct globval *next;
+ char *name;
+ };
+
+extern void throw_to_top_level __P((void));
+extern int sh_eaccess __P((char *, int));
+extern char *sh_makepath __P((const char *, const char *, int));
+extern int signal_is_pending __P((int));
+extern void run_pending_traps __P((void));
+
+extern int extended_glob;
/* Global variable which controls whether or not * matches .*.
Non-zero means don't match .*. */
int noglob_dot_filenames = 1;
+/* Global variable which controls whether or not filename globbing
+ is done without regard to case. */
+int glob_ignore_case = 0;
+
/* Global variable to return to signify an error in globbing. */
char *glob_error_return;
-/* Return nonzero if PATTERN has any special globbing chars in it. */
+static struct globval finddirs_error_return;
+
+/* Some forward declarations. */
+static int skipname __P((char *, char *, int));
+#if HANDLE_MULTIBYTE
+static int mbskipname __P((char *, char *, int));
+#endif
+#if HANDLE_MULTIBYTE
+static void udequote_pathname __P((char *));
+static void wdequote_pathname __P((char *));
+#else
+# define dequote_pathname udequote_pathname
+#endif
+static void dequote_pathname __P((char *));
+static int glob_testdir __P((char *, int));
+static char **glob_dir_to_array __P((char *, char **, int));
+
+/* Make sure these names continue to agree with what's in smatch.c */
+extern char *glob_patscan __P((char *, char *, int));
+extern wchar_t *glob_patscan_wc __P((wchar_t *, wchar_t *, int));
+
+extern char *glob_dirscan __P((char *, int));
+
+/* Compile `glob_loop.c' for single-byte characters. */
+#define CHAR unsigned char
+#define INT int
+#define L(CS) CS
+#define INTERNAL_GLOB_PATTERN_P internal_glob_pattern_p
+#include "glob_loop.c"
+
+/* Compile `glob_loop.c' again for multibyte characters. */
+#if HANDLE_MULTIBYTE
+
+#define CHAR wchar_t
+#define INT wint_t
+#define L(CS) L##CS
+#define INTERNAL_GLOB_PATTERN_P internal_glob_wpattern_p
+#include "glob_loop.c"
+
+#endif /* HANDLE_MULTIBYTE */
+
+/* And now a function that calls either the single-byte or multibyte version
+ of internal_glob_pattern_p. */
int
glob_pattern_p (pattern)
- char *pattern;
+ const char *pattern;
{
- register char *p = pattern;
- register char c;
- int open = 0;
-
- while ((c = *p++) != '\0')
- switch (c)
- {
- case '?':
- case '*':
- return (1);
-
- case '[': /* Only accept an open brace if there is a close */
- open++; /* brace to match it. Bracket expressions must be */
- continue; /* complete, according to Posix.2 */
- case ']':
- if (open)
- return (1);
- continue;
-
- case '\\':
- if (*p++ == '\0')
- return (0);
- }
+#if HANDLE_MULTIBYTE
+ size_t n;
+ wchar_t *wpattern;
+ int r;
- return (0);
+ if (MB_CUR_MAX == 1)
+ return (internal_glob_pattern_p ((unsigned char *)pattern));
+
+ /* Convert strings to wide chars, and call the multibyte version. */
+ n = xdupmbstowcs (&wpattern, NULL, pattern);
+ if (n == (size_t)-1)
+ /* Oops. Invalid multibyte sequence. Try it as single-byte sequence. */
+ return (internal_glob_pattern_p ((unsigned char *)pattern));
+
+ r = internal_glob_wpattern_p (wpattern);
+ free (wpattern);
+
+ return r;
+#else
+ return (internal_glob_pattern_p (pattern));
+#endif
+}
+
+#if EXTENDED_GLOB
+/* Return 1 if all subpatterns in the extended globbing pattern PAT indicate
+ that the name should be skipped. XXX - doesn't handle pattern negation,
+ not sure if it should */
+static int
+extglob_skipname (pat, dname, flags)
+ char *pat, *dname;
+ int flags;
+{
+ char *pp, *pe, *t, *se;
+ int n, r, negate;
+
+ negate = *pat == '!';
+ pp = pat + 2;
+ se = pp + strlen (pp) - 1; /* end of string */
+ pe = glob_patscan (pp, se, 0); /* end of extglob pattern (( */
+ /* we should check for invalid extglob pattern here */
+ if (pe == 0)
+ return 0;
+
+ /* if pe != se we have more of the pattern at the end of the extglob
+ pattern. Check the easy case first ( */
+ if (pe == se && *pe == ')' && (t = strchr (pp, '|')) == 0)
+ {
+ *pe = '\0';
+#if defined (HANDLE_MULTIBYTE)
+ r = mbskipname (pp, dname, flags);
+#else
+ r = skipname (pp, dname, flags); /*(*/
+#endif
+ *pe = ')';
+ return r;
+ }
+
+ /* check every subpattern */
+ while (t = glob_patscan (pp, pe, '|'))
+ {
+ n = t[-1];
+ t[-1] = '\0';
+#if defined (HANDLE_MULTIBYTE)
+ r = mbskipname (pp, dname, flags);
+#else
+ r = skipname (pp, dname, flags);
+#endif
+ t[-1] = n;
+ if (r == 0) /* if any pattern says not skip, we don't skip */
+ return r;
+ pp = t;
+ } /*(*/
+
+ /* glob_patscan might find end of pattern */
+ if (pp == se)
+ return r;
+
+ /* but if it doesn't then we didn't match a leading dot */
+ return 0;
+}
+#endif
+
+/* Return 1 if DNAME should be skipped according to PAT. Mostly concerned
+ with matching leading `.'. */
+static int
+skipname (pat, dname, flags)
+ char *pat;
+ char *dname;
+ int flags;
+{
+#if EXTENDED_GLOB
+ if (extglob_pattern_p (pat)) /* XXX */
+ return (extglob_skipname (pat, dname, flags));
+#endif
+
+ /* If a leading dot need not be explicitly matched, and the pattern
+ doesn't start with a `.', don't match `.' or `..' */
+ if (noglob_dot_filenames == 0 && pat[0] != '.' &&
+ (pat[0] != '\\' || pat[1] != '.') &&
+ (dname[0] == '.' &&
+ (dname[1] == '\0' || (dname[1] == '.' && dname[2] == '\0'))))
+ return 1;
+
+ /* If a dot must be explicitly matched, check to see if they do. */
+ else if (noglob_dot_filenames && dname[0] == '.' && pat[0] != '.' &&
+ (pat[0] != '\\' || pat[1] != '.'))
+ return 1;
+
+ return 0;
+}
+
+#if HANDLE_MULTIBYTE
+
+static int
+wchkname (pat_wc, dn_wc)
+ wchar_t *pat_wc, *dn_wc;
+{
+ /* If a leading dot need not be explicitly matched, and the
+ pattern doesn't start with a `.', don't match `.' or `..' */
+ if (noglob_dot_filenames == 0 && pat_wc[0] != L'.' &&
+ (pat_wc[0] != L'\\' || pat_wc[1] != L'.') &&
+ (dn_wc[0] == L'.' &&
+ (dn_wc[1] == L'\0' || (dn_wc[1] == L'.' && dn_wc[2] == L'\0'))))
+ return 1;
+
+ /* If a leading dot must be explicitly matched, check to see if the
+ pattern and dirname both have one. */
+ else if (noglob_dot_filenames && dn_wc[0] == L'.' &&
+ pat_wc[0] != L'.' &&
+ (pat_wc[0] != L'\\' || pat_wc[1] != L'.'))
+ return 1;
+
+ return 0;
+}
+
+static int
+wextglob_skipname (pat, dname, flags)
+ wchar_t *pat, *dname;
+ int flags;
+{
+#if EXTENDED_GLOB
+ wchar_t *pp, *pe, *t, n, *se;
+ int r, negate;
+
+ negate = *pat == L'!';
+ pp = pat + 2;
+ se = pp + wcslen (pp) - 1; /*(*/
+ pe = glob_patscan_wc (pp, se, 0);
+
+ if (pe == se && *pe == ')' && (t = wcschr (pp, L'|')) == 0)
+ {
+ *pe = L'\0';
+ r = wchkname (pp, dname); /*(*/
+ *pe = L')';
+ return r;
+ }
+
+ /* check every subpattern */
+ while (t = glob_patscan_wc (pp, pe, '|'))
+ {
+ n = t[-1];
+ t[-1] = L'\0';
+ r = wchkname (pp, dname);
+ t[-1] = n;
+ if (r == 0)
+ return 0;
+ pp = t;
+ }
+
+ if (pp == pe) /* glob_patscan_wc might find end of pattern */
+ return r;
+
+ /* but if it doesn't then we didn't match a leading dot */
+ return 0;
+#else
+ return (wchkname (pat, dname));
+#endif
+}
+
+/* Return 1 if DNAME should be skipped according to PAT. Handles multibyte
+ characters in PAT and DNAME. Mostly concerned with matching leading `.'. */
+static int
+mbskipname (pat, dname, flags)
+ char *pat, *dname;
+ int flags;
+{
+ int ret, ext;
+ wchar_t *pat_wc, *dn_wc;
+ size_t pat_n, dn_n;
+
+ if (mbsmbchar (dname) == 0 && mbsmbchar (pat) == 0)
+ return (skipname (pat, dname, flags));
+
+ ext = 0;
+#if EXTENDED_GLOB
+ ext = extglob_pattern_p (pat);
+#endif
+
+ pat_wc = dn_wc = (wchar_t *)NULL;
+
+ pat_n = xdupmbstowcs (&pat_wc, NULL, pat);
+ if (pat_n != (size_t)-1)
+ dn_n = xdupmbstowcs (&dn_wc, NULL, dname);
+
+ ret = 0;
+ if (pat_n != (size_t)-1 && dn_n !=(size_t)-1)
+ ret = ext ? wextglob_skipname (pat_wc, dn_wc, flags) : wchkname (pat_wc, dn_wc);
+ else
+ ret = skipname (pat, dname, flags);
+
+ FREE (pat_wc);
+ FREE (dn_wc);
+
+ return ret;
}
+#endif /* HANDLE_MULTIBYTE */
/* Remove backslashes quoting characters in PATHNAME by modifying PATHNAME. */
static void
-dequote_pathname (pathname)
+udequote_pathname (pathname)
char *pathname;
{
register int i, j;
pathname[j++] = pathname[i++];
- if (!pathname[i - 1])
+ if (pathname[i - 1] == 0)
break;
}
- pathname[j] = '\0';
+ if (pathname)
+ pathname[j] = '\0';
}
-\f
+#if HANDLE_MULTIBYTE
+/* Remove backslashes quoting characters in PATHNAME by modifying PATHNAME. */
+static void
+wdequote_pathname (pathname)
+ char *pathname;
+{
+ mbstate_t ps;
+ size_t len, n;
+ wchar_t *wpathname;
+ int i, j;
+ wchar_t *orig_wpathname;
+
+ len = strlen (pathname);
+ /* Convert the strings into wide characters. */
+ n = xdupmbstowcs (&wpathname, NULL, pathname);
+ if (n == (size_t) -1)
+ {
+ /* Something wrong. Fall back to single-byte */
+ udequote_pathname (pathname);
+ return;
+ }
+ orig_wpathname = wpathname;
+
+ for (i = j = 0; wpathname && wpathname[i]; )
+ {
+ if (wpathname[i] == L'\\')
+ i++;
+
+ wpathname[j++] = wpathname[i++];
+
+ if (wpathname[i - 1] == L'\0')
+ break;
+ }
+ if (wpathname)
+ wpathname[j] = L'\0';
+
+ /* Convert the wide character string into unibyte character set. */
+ memset (&ps, '\0', sizeof(mbstate_t));
+ n = wcsrtombs(pathname, (const wchar_t **)&wpathname, len, &ps);
+ pathname[len] = '\0';
+
+ /* Can't just free wpathname here; wcsrtombs changes it in many cases. */
+ free (orig_wpathname);
+}
+
+static void
+dequote_pathname (pathname)
+ char *pathname;
+{
+ if (MB_CUR_MAX > 1)
+ wdequote_pathname (pathname);
+ else
+ udequote_pathname (pathname);
+}
+#endif /* HANDLE_MULTIBYTE */
+
+/* Test whether NAME exists. */
+
+#if defined (HAVE_LSTAT)
+# define GLOB_TESTNAME(name) (lstat (name, &finfo))
+#else /* !HAVE_LSTAT */
+# if !defined (AFS)
+# define GLOB_TESTNAME(name) (sh_eaccess (name, F_OK))
+# else /* AFS */
+# define GLOB_TESTNAME(name) (access (name, F_OK))
+# endif /* AFS */
+#endif /* !HAVE_LSTAT */
+
+/* Return 0 if DIR is a directory, -1 otherwise. */
+static int
+glob_testdir (dir, flags)
+ char *dir;
+ int flags;
+{
+ struct stat finfo;
+ int r;
+
+/*itrace("glob_testdir: testing %s" flags = %d, dir, flags);*/
+#if defined (HAVE_LSTAT)
+ r = (flags & GX_ALLDIRS) ? lstat (dir, &finfo) : stat (dir, &finfo);
+#else
+ r = stat (dir, &finfo);
+#endif
+ if (r < 0)
+ return (-1);
+
+ if (S_ISDIR (finfo.st_mode) == 0)
+ return (-1);
+
+ return (0);
+}
+
+/* Recursively scan SDIR for directories matching PAT (PAT is always `**').
+ FLAGS is simply passed down to the recursive call to glob_vector. Returns
+ a list of matching directory names. EP, if non-null, is set to the last
+ element of the returned list. NP, if non-null, is set to the number of
+ directories in the returned list. These two variables exist for the
+ convenience of the caller (always glob_vector). */
+static struct globval *
+finddirs (pat, sdir, flags, ep, np)
+ char *pat;
+ char *sdir;
+ int flags;
+ struct globval **ep;
+ int *np;
+{
+ char **r, *n;
+ int ndirs;
+ struct globval *ret, *e, *g;
+
+/*itrace("finddirs: pat = `%s' sdir = `%s' flags = 0x%x", pat, sdir, flags);*/
+ e = ret = 0;
+ r = glob_vector (pat, sdir, flags);
+ if (r == 0 || r[0] == 0)
+ {
+ if (np)
+ *np = 0;
+ if (ep)
+ *ep = 0;
+ if (r && r != &glob_error_return)
+ free (r);
+ return (struct globval *)0;
+ }
+ for (ndirs = 0; r[ndirs] != 0; ndirs++)
+ {
+ g = (struct globval *) malloc (sizeof (struct globval));
+ if (g == 0)
+ {
+ while (ret) /* free list built so far */
+ {
+ g = ret->next;
+ free (ret);
+ ret = g;
+ }
+
+ free (r);
+ if (np)
+ *np = 0;
+ if (ep)
+ *ep = 0;
+ return (&finddirs_error_return);
+ }
+ if (e == 0)
+ e = g;
+
+ g->next = ret;
+ ret = g;
+
+ g->name = r[ndirs];
+ }
+
+ free (r);
+ if (ep)
+ *ep = e;
+ if (np)
+ *np = ndirs;
+
+ return ret;
+}
+
/* Return a vector of names of files in directory DIR
whose names match glob pattern PAT.
The names are not in any particular order.
Look in errno for more information. */
char **
-glob_vector (pat, dir)
+glob_vector (pat, dir, flags)
char *pat;
char *dir;
+ int flags;
{
- struct globval
- {
- struct globval *next;
- char *name;
- };
-
DIR *d;
register struct dirent *dp;
- struct globval *lastlink;
+ struct globval *lastlink, *e, *dirlist;
register struct globval *nextlink;
- register char *nextname;
+ register char *nextname, *npat, *subdir;
unsigned int count;
- int lose, skip;
+ int lose, skip, ndirs, isdir, sdlen, add_current, patlen;
register char **name_vector;
register unsigned int i;
-#if defined (OPENDIR_NOT_ROBUST)
- struct stat finfo;
-
- if (stat (dir, &finfo) < 0)
- return ((char **) &glob_error_return);
-
- if (!S_ISDIR (finfo.st_mode))
- return ((char **) &glob_error_return);
-#endif /* OPENDIR_NOT_ROBUST */
-
- d = opendir (dir);
- if (d == NULL)
- return ((char **) &glob_error_return);
+ int mflags; /* Flags passed to strmatch (). */
+ int pflags; /* flags passed to sh_makepath () */
+ int nalloca;
+ struct globval *firstmalloc, *tmplink;
+ char *convfn;
lastlink = 0;
- count = 0;
- lose = 0;
- skip = 0;
+ count = lose = skip = add_current = 0;
+ firstmalloc = 0;
+ nalloca = 0;
+
+/*itrace("glob_vector: pat = `%s' dir = `%s' flags = 0x%x", pat, dir, flags);*/
/* If PAT is empty, skip the loop, but return one (empty) filename. */
- if (!pat || !*pat)
+ if (pat == 0 || *pat == '\0')
{
+ if (glob_testdir (dir, 0) < 0)
+ return ((char **) &glob_error_return);
+
nextlink = (struct globval *)alloca (sizeof (struct globval));
- nextlink->next = lastlink;
+ if (nextlink == NULL)
+ return ((char **) NULL);
+
+ nextlink->next = (struct globval *)0;
nextname = (char *) malloc (1);
- if (!nextname)
+ if (nextname == 0)
lose = 1;
else
{
lastlink = nextlink;
nextlink->name = nextname;
nextname[0] = '\0';
- count++;
+ count = 1;
}
+
skip = 1;
}
- /* Scan the directory, finding all names that match.
- For each name that matches, allocate a struct globval
- on the stack and store the name in it.
- Chain those structs together; lastlink is the front of the chain. */
- while (!skip)
+ patlen = (pat && *pat) ? strlen (pat) : 0;
+
+ /* If the filename pattern (PAT) does not contain any globbing characters,
+ we can dispense with reading the directory, and just see if there is
+ a filename `DIR/PAT'. If there is, and we can access it, just make the
+ vector to return and bail immediately. */
+ if (skip == 0 && glob_pattern_p (pat) == 0)
{
- int flags; /* Flags passed to fnmatch (). */
-#if defined (SHELL)
- /* Make globbing interruptible in the bash shell. */
- if (interrupt_state)
+ int dirlen;
+ struct stat finfo;
+
+ if (glob_testdir (dir, 0) < 0)
+ return ((char **) &glob_error_return);
+
+ dirlen = strlen (dir);
+ nextname = (char *)malloc (dirlen + patlen + 2);
+ npat = (char *)malloc (patlen + 1);
+ if (nextname == 0 || npat == 0)
{
- closedir (d);
+ FREE (nextname);
+ FREE (npat);
lose = 1;
- goto lost;
}
-#endif /* SHELL */
-
- dp = readdir (d);
- if (dp == NULL)
- break;
+ else
+ {
+ strcpy (npat, pat);
+ dequote_pathname (npat);
- /* If this directory entry is not to be used, try again. */
- if (!REAL_DIR_ENTRY (dp))
- continue;
+ strcpy (nextname, dir);
+ nextname[dirlen++] = '/';
+ strcpy (nextname + dirlen, npat);
- /* If a dot must be explicity matched, check to see if they do. */
- if (noglob_dot_filenames && dp->d_name[0] == '.' && pat[0] != '.')
- continue;
+ if (GLOB_TESTNAME (nextname) >= 0)
+ {
+ free (nextname);
+ nextlink = (struct globval *)alloca (sizeof (struct globval));
+ if (nextlink)
+ {
+ nextlink->next = (struct globval *)0;
+ lastlink = nextlink;
+ nextlink->name = npat;
+ count = 1;
+ }
+ else
+ {
+ free (npat);
+ lose = 1;
+ }
+ }
+ else
+ {
+ free (nextname);
+ free (npat);
+ }
+ }
- flags = (noglob_dot_filenames ? FNM_PERIOD : 0) | FNM_PATHNAME;
+ skip = 1;
+ }
+
+ if (skip == 0)
+ {
+ /* Open the directory, punting immediately if we cannot. If opendir
+ is not robust (i.e., it opens non-directories successfully), test
+ that DIR is a directory and punt if it's not. */
+#if defined (OPENDIR_NOT_ROBUST)
+ if (glob_testdir (dir, 0) < 0)
+ return ((char **) &glob_error_return);
+#endif
- if (fnmatch (pat, dp->d_name, flags) != FNM_NOMATCH)
+ d = opendir (dir);
+ if (d == NULL)
+ return ((char **) &glob_error_return);
+
+ /* Compute the flags that will be passed to strmatch(). We don't
+ need to do this every time through the loop. */
+ mflags = (noglob_dot_filenames ? FNM_PERIOD : 0) | FNM_PATHNAME;
+
+#ifdef FNM_CASEFOLD
+ if (glob_ignore_case)
+ mflags |= FNM_CASEFOLD;
+#endif
+
+ if (extended_glob)
+ mflags |= FNM_EXTMATCH;
+
+ add_current = ((flags & (GX_ALLDIRS|GX_ADDCURDIR)) == (GX_ALLDIRS|GX_ADDCURDIR));
+
+ /* Scan the directory, finding all names that match.
+ For each name that matches, allocate a struct globval
+ on the stack and store the name in it.
+ Chain those structs together; lastlink is the front of the chain. */
+ while (1)
{
- nextlink = (struct globval *) alloca (sizeof (struct globval));
- nextlink->next = lastlink;
- nextname = (char *) malloc (D_NAMLEN (dp) + 1);
- if (nextname == NULL)
+ /* Make globbing interruptible in the shell. */
+ if (interrupt_state || terminating_signal)
{
lose = 1;
break;
}
- lastlink = nextlink;
+ else if (signal_is_pending (SIGINT)) /* XXX - make SIGINT traps responsive */
+ {
+ lose = 1;
+ break;
+ }
+
+ dp = readdir (d);
+ if (dp == NULL)
+ break;
+
+ /* If this directory entry is not to be used, try again. */
+ if (REAL_DIR_ENTRY (dp) == 0)
+ continue;
+
+#if 0
+ if (dp->d_name == 0 || *dp->d_name == 0)
+ continue;
+#endif
+
+#if HANDLE_MULTIBYTE
+ if (MB_CUR_MAX > 1 && mbskipname (pat, dp->d_name, flags))
+ continue;
+ else
+#endif
+ if (skipname (pat, dp->d_name, flags))
+ continue;
+
+ /* If we're only interested in directories, don't bother with files */
+ if (flags & (GX_MATCHDIRS|GX_ALLDIRS))
+ {
+ pflags = (flags & GX_ALLDIRS) ? MP_RMDOT : 0;
+ if (flags & GX_NULLDIR)
+ pflags |= MP_IGNDOT;
+ subdir = sh_makepath (dir, dp->d_name, pflags);
+ isdir = glob_testdir (subdir, flags);
+ if (isdir < 0 && (flags & GX_MATCHDIRS))
+ {
+ free (subdir);
+ continue;
+ }
+ }
+
+ if (flags & GX_ALLDIRS)
+ {
+ if (isdir == 0)
+ {
+ dirlist = finddirs (pat, subdir, (flags & ~GX_ADDCURDIR), &e, &ndirs);
+ if (dirlist == &finddirs_error_return)
+ {
+ free (subdir);
+ lose = 1;
+ break;
+ }
+ if (ndirs) /* add recursive directories to list */
+ {
+ if (firstmalloc == 0)
+ firstmalloc = e;
+ e->next = lastlink;
+ lastlink = dirlist;
+ count += ndirs;
+ }
+ }
+
+ nextlink = (struct globval *) malloc (sizeof (struct globval));
+ if (firstmalloc == 0)
+ firstmalloc = nextlink;
+ sdlen = strlen (subdir);
+ nextname = (char *) malloc (sdlen + 1);
+ if (nextlink == 0 || nextname == 0)
+ {
+ FREE (nextlink);
+ FREE (nextname);
+ free (subdir);
+ lose = 1;
+ break;
+ }
+ nextlink->next = lastlink;
+ lastlink = nextlink;
+ nextlink->name = nextname;
+ bcopy (subdir, nextname, sdlen + 1);
+ free (subdir);
+ ++count;
+ continue;
+ }
+ else if (flags & GX_MATCHDIRS)
+ free (subdir);
+
+ convfn = fnx_fromfs (dp->d_name, D_NAMLEN (dp));
+ if (strmatch (pat, convfn, mflags) != FNM_NOMATCH)
+ {
+ if (nalloca < ALLOCA_MAX)
+ {
+ nextlink = (struct globval *) alloca (sizeof (struct globval));
+ nalloca += sizeof (struct globval);
+ }
+ else
+ {
+ nextlink = (struct globval *) malloc (sizeof (struct globval));
+ if (firstmalloc == 0)
+ firstmalloc = nextlink;
+ }
+
+ nextname = (char *) malloc (D_NAMLEN (dp) + 1);
+ if (nextlink == 0 || nextname == 0)
+ {
+ FREE (nextlink);
+ FREE (nextname);
+ lose = 1;
+ break;
+ }
+ nextlink->next = lastlink;
+ lastlink = nextlink;
+ nextlink->name = nextname;
+ bcopy (dp->d_name, nextname, D_NAMLEN (dp) + 1);
+ ++count;
+ }
+ }
+
+ (void) closedir (d);
+ }
+
+ /* compat: if GX_ADDCURDIR, add the passed directory also. Add an empty
+ directory name as a placeholder if GX_NULLDIR (in which case the passed
+ directory name is "."). */
+ if (add_current)
+ {
+ sdlen = strlen (dir);
+ nextname = (char *)malloc (sdlen + 1);
+ nextlink = (struct globval *) malloc (sizeof (struct globval));
+ if (nextlink == 0 || nextname == 0)
+ {
+ FREE (nextlink);
+ FREE (nextname);
+ lose = 1;
+ }
+ else
+ {
nextlink->name = nextname;
- bcopy (dp->d_name, nextname, D_NAMLEN (dp) + 1);
+ nextlink->next = lastlink;
+ lastlink = nextlink;
+ if (flags & GX_NULLDIR)
+ nextname[0] = '\0';
+ else
+ bcopy (dir, nextname, sdlen + 1);
++count;
}
}
- (void) closedir (d);
- if (!lose)
+ if (lose == 0)
{
name_vector = (char **) malloc ((count + 1) * sizeof (char *));
lose |= name_vector == NULL;
}
/* Have we run out of memory? */
- lost:
if (lose)
{
+ tmplink = 0;
+
/* Here free the strings we have got. */
while (lastlink)
{
+ /* Since we build the list in reverse order, the first N entries
+ will be allocated with malloc, if firstmalloc is set, from
+ lastlink to firstmalloc. */
+ if (firstmalloc)
+ {
+ if (lastlink == firstmalloc)
+ firstmalloc = 0;
+ tmplink = lastlink;
+ }
+ else
+ tmplink = 0;
free (lastlink->name);
lastlink = lastlink->next;
+ FREE (tmplink);
}
-#if defined (SHELL)
- if (interrupt_state)
- throw_to_top_level ();
-#endif /* SHELL */
- return (NULL);
+
+ /* Don't call QUIT; here; let higher layers deal with it. */
+
+ return ((char **)NULL);
}
/* Copy the name pointers from the linked list into the vector. */
- for (i = 0; i < count; ++i)
+ for (tmplink = lastlink, i = 0; i < count; ++i)
{
- name_vector[i] = lastlink->name;
- lastlink = lastlink->next;
+ name_vector[i] = tmplink->name;
+ tmplink = tmplink->next;
}
name_vector[count] = NULL;
+
+ /* If we allocated some of the struct globvals, free them now. */
+ if (firstmalloc)
+ {
+ tmplink = 0;
+ while (lastlink)
+ {
+ tmplink = lastlink;
+ if (lastlink == firstmalloc)
+ lastlink = firstmalloc = 0;
+ else
+ lastlink = lastlink->next;
+ free (tmplink);
+ }
+ }
+
return (name_vector);
}
-\f
+
/* Return a new array which is the concatenation of each string in ARRAY
to DIR. This function expects you to pass in an allocated ARRAY, and
it takes care of free()ing that array. Thus, you might think of this
- function as side-effecting ARRAY. */
+ function as side-effecting ARRAY. This should handle GX_MARKDIRS. */
static char **
-glob_dir_to_array (dir, array)
+glob_dir_to_array (dir, array, flags)
char *dir, **array;
+ int flags;
{
register unsigned int i, l;
int add_slash;
- char **result;
+ char **result, *new;
+ struct stat sb;
l = strlen (dir);
if (l == 0)
- return (array);
+ {
+ if (flags & GX_MARKDIRS)
+ for (i = 0; array[i]; i++)
+ {
+ if ((stat (array[i], &sb) == 0) && S_ISDIR (sb.st_mode))
+ {
+ l = strlen (array[i]);
+ new = (char *)realloc (array[i], l + 2);
+ if (new == 0)
+ return NULL;
+ new[l] = '/';
+ new[l+1] = '\0';
+ array[i] = new;
+ }
+ }
+ return (array);
+ }
add_slash = dir[l - 1] != '/';
for (i = 0; array[i] != NULL; i++)
{
- result[i] = (char *) malloc (l + (add_slash ? 1 : 0)
- + strlen (array[i]) + 1);
+ /* 3 == 1 for NUL, 1 for slash at end of DIR, 1 for GX_MARKDIRS */
+ result[i] = (char *) malloc (l + strlen (array[i]) + 3);
+
if (result[i] == NULL)
- return (NULL);
-#if 1
+ {
+ int ind;
+ for (ind = 0; ind < i; ind++)
+ free (result[ind]);
+ free (result);
+ return (NULL);
+ }
+
strcpy (result[i], dir);
if (add_slash)
- result[i][l] = '/';
+ result[i][l] = '/';
strcpy (result[i] + l + add_slash, array[i]);
-#else
- (void)sprintf (result[i], "%s%s%s", dir, add_slash ? "/" : "", array[i]);
-#endif
+ if (flags & GX_MARKDIRS)
+ {
+ if ((stat (result[i], &sb) == 0) && S_ISDIR (sb.st_mode))
+ {
+ size_t rlen;
+ rlen = strlen (result[i]);
+ result[i][rlen] = '/';
+ result[i][rlen+1] = '\0';
+ }
+ }
}
result[i] = NULL;
return (result);
}
-\f
+
/* Do globbing on PATHNAME. Return an array of pathnames that match,
marking the end of the array with a null-pointer as an element.
If no pathnames match, then the array is empty (first element is null).
If there isn't enough memory, then return NULL.
If a file system error occurs, return -1; `errno' has the error code. */
char **
-glob_filename (pathname)
+glob_filename (pathname, flags)
char *pathname;
+ int flags;
{
char **result;
unsigned int result_size;
- char *directory_name, *filename;
+ char *directory_name, *filename, *dname, *fn;
unsigned int directory_len;
+ int free_dirname; /* flag */
+ int dflags;
result = (char **) malloc (sizeof (char *));
result_size = 1;
result[0] = NULL;
+ directory_name = NULL;
+
/* Find the filename. */
filename = strrchr (pathname, '/');
+#if defined (EXTENDED_GLOB)
+ if (filename && extended_glob)
+ {
+ fn = glob_dirscan (pathname, '/');
+#if DEBUG_MATCHING
+ if (fn != filename)
+ fprintf (stderr, "glob_filename: glob_dirscan: fn (%s) != filename (%s)\n", fn ? fn : "(null)", filename);
+#endif
+ filename = fn;
+ }
+#endif
+
if (filename == NULL)
{
filename = pathname;
directory_name = "";
directory_len = 0;
+ free_dirname = 0;
}
else
{
directory_len = (filename - pathname) + 1;
- directory_name = (char *) alloca (directory_len + 1);
+ directory_name = (char *) malloc (directory_len + 1);
+
+ if (directory_name == 0) /* allocation failed? */
+ return (NULL);
bcopy (pathname, directory_name, directory_len);
directory_name[directory_len] = '\0';
++filename;
+ free_dirname = 1;
}
/* If directory_name contains globbing characters, then we
have to expand the previous levels. Just recurse. */
- if (glob_pattern_p (directory_name))
+ if (directory_len > 0 && glob_pattern_p (directory_name))
{
- char **directories;
+ char **directories, *d, *p;
register unsigned int i;
+ int all_starstar, last_starstar;
+
+ all_starstar = last_starstar = 0;
+ d = directory_name;
+ dflags = flags & ~GX_MARKDIRS;
+ /* Collapse a sequence of ** patterns separated by one or more slashes
+ to a single ** terminated by a slash or NUL */
+ if ((flags & GX_GLOBSTAR) && d[0] == '*' && d[1] == '*' && (d[2] == '/' || d[2] == '\0'))
+ {
+ p = d;
+ while (d[0] == '*' && d[1] == '*' && (d[2] == '/' || d[2] == '\0'))
+ {
+ p = d;
+ if (d[2])
+ {
+ d += 3;
+ while (*d == '/')
+ d++;
+ if (*d == 0)
+ break;
+ }
+ }
+ if (*d == 0)
+ all_starstar = 1;
+ d = p;
+ dflags |= GX_ALLDIRS|GX_ADDCURDIR;
+ directory_len = strlen (d);
+ }
- if (directory_name[directory_len - 1] == '/')
- directory_name[directory_len - 1] = '\0';
+ /* If there is a non [star][star]/ component in directory_name, we
+ still need to collapse trailing sequences of [star][star]/ into
+ a single one and note that the directory name ends with [star][star],
+ so we can compensate if filename is [star][star] */
+ if ((flags & GX_GLOBSTAR) && all_starstar == 0)
+ {
+ int dl, prev;
+ prev = dl = directory_len;
+ while (dl >= 4 && d[dl - 1] == '/' &&
+ d[dl - 2] == '*' &&
+ d[dl - 3] == '*' &&
+ d[dl - 4] == '/')
+ prev = dl, dl -= 3;
+ if (dl != directory_len)
+ last_starstar = 1;
+ directory_len = prev;
+ }
- directories = glob_filename (directory_name);
+ /* If the directory name ends in [star][star]/ but the filename is
+ [star][star], just remove the final [star][star] from the directory
+ so we don't have to scan everything twice. */
+ if (last_starstar && directory_len > 4 &&
+ filename[0] == '*' && filename[1] == '*' && filename[2] == 0)
+ {
+ directory_len -= 3;
+ }
+
+ if (d[directory_len - 1] == '/')
+ d[directory_len - 1] = '\0';
+
+ directories = glob_filename (d, dflags);
+
+ if (free_dirname)
+ {
+ free (directory_name);
+ directory_name = NULL;
+ }
if (directories == NULL)
goto memory_error;
return ((char **) &glob_error_return);
}
+ /* If we have something like [star][star]/[star][star], it's no use to
+ glob **, then do it again, and throw half the results away. */
+ if (all_starstar && filename[0] == '*' && filename[1] == '*' && filename[2] == 0)
+ {
+ free ((char *) directories);
+ free (directory_name);
+ directory_name = NULL;
+ directory_len = 0;
+ goto only_filename;
+ }
+
/* We have successfully globbed the preceding directory name.
For each name in DIRECTORIES, call glob_vector on it and
FILENAME. Concatenate the results together. */
for (i = 0; directories[i] != NULL; ++i)
{
char **temp_results;
+ int shouldbreak;
- /* Scan directory even on a NULL pathname. That way, `*h/'
+ shouldbreak = 0;
+ /* XXX -- we've recursively scanned any directories resulting from
+ a `**', so turn off the flag. We turn it on again below if
+ filename is `**' */
+ /* Scan directory even on a NULL filename. That way, `*h/'
returns only directories ending in `h', instead of all
files ending in `h' with a `/' appended. */
- temp_results = glob_vector (filename, directories[i]);
+ dname = directories[i];
+ dflags = flags & ~(GX_MARKDIRS|GX_ALLDIRS|GX_ADDCURDIR);
+ if ((flags & GX_GLOBSTAR) && filename[0] == '*' && filename[1] == '*' && filename[2] == '\0')
+ dflags |= GX_ALLDIRS|GX_ADDCURDIR;
+ if (dname[0] == '\0' && filename[0])
+ {
+ dflags |= GX_NULLDIR;
+ dname = "."; /* treat null directory name and non-null filename as current directory */
+ }
+ temp_results = glob_vector (filename, dname, dflags);
/* Handle error cases. */
if (temp_results == NULL)
char **array;
register unsigned int l;
- array = glob_dir_to_array (directories[i], temp_results);
+ /* If we're expanding **, we don't need to glue the directory
+ name to the results; we've already done it in glob_vector */
+ if ((dflags & GX_ALLDIRS) && filename[0] == '*' && filename[1] == '*' && (filename[2] == '\0' || filename[2] == '/'))
+ {
+ /* When do we remove null elements from temp_results? And
+ how to avoid duplicate elements in the final result? */
+ /* If (dflags & GX_NULLDIR) glob_filename potentially left a
+ NULL placeholder in the temp results just in case
+ glob_vector/glob_dir_to_array did something with it, but
+ if it didn't, and we're not supposed to be passing them
+ through for some reason ((flags & GX_NULLDIR) == 0) we
+ need to remove all the NULL elements from the beginning
+ of TEMP_RESULTS. */
+ /* If we have a null directory name and ** as the filename,
+ we have just searched for everything from the current
+ directory on down. Break now (shouldbreak = 1) to avoid
+ duplicate entries in the final result. */
+#define NULL_PLACEHOLDER(x) ((x) && *(x) && **(x) == 0)
+ if ((dflags & GX_NULLDIR) && (flags & GX_NULLDIR) == 0 &&
+ NULL_PLACEHOLDER (temp_results))
+#undef NULL_PLACEHOLDER
+ {
+ register int i, n;
+ for (n = 0; temp_results[n] && *temp_results[n] == 0; n++)
+ ;
+ i = n;
+ do
+ temp_results[i - n] = temp_results[i];
+ while (temp_results[i++] != 0);
+ array = temp_results;
+ shouldbreak = 1;
+ }
+ else
+ array = temp_results;
+ }
+ else
+ array = glob_dir_to_array (directories[i], temp_results, flags);
l = 0;
while (array[l] != NULL)
++l;
result[result_size - 1] = NULL;
/* Note that the elements of ARRAY are not freed. */
- free ((char *) array);
+ if (array != temp_results)
+ free ((char *) array);
+ else if ((dflags & GX_ALLDIRS) && filename[0] == '*' && filename[1] == '*' && filename[2] == '\0')
+ free (temp_results); /* expanding ** case above */
+
+ if (shouldbreak)
+ break;
}
}
/* Free the directories. */
return (result);
}
+only_filename:
/* If there is only a directory name, return it. */
if (*filename == '\0')
{
result = (char **) realloc ((char *) result, 2 * sizeof (char *));
if (result == NULL)
return (NULL);
+ /* Handle GX_MARKDIRS here. */
result[0] = (char *) malloc (directory_len + 1);
if (result[0] == NULL)
goto memory_error;
bcopy (directory_name, result[0], directory_len + 1);
+ if (free_dirname)
+ free (directory_name);
result[1] = NULL;
return (result);
}
/* Just return what glob_vector () returns appended to the
directory name. */
- temp_results =
- glob_vector (filename, (directory_len == 0 ? "." : directory_name));
+ /* If flags & GX_ALLDIRS, we're called recursively */
+ dflags = flags & ~GX_MARKDIRS;
+ if (directory_len == 0)
+ dflags |= GX_NULLDIR;
+ if ((flags & GX_GLOBSTAR) && filename[0] == '*' && filename[1] == '*' && filename[2] == '\0')
+ {
+ dflags |= GX_ALLDIRS|GX_ADDCURDIR;
+#if 0
+ /* If we want all directories (dflags & GX_ALLDIRS) and we're not
+ being called recursively as something like `echo [star][star]/[star].o'
+ ((flags & GX_ALLDIRS) == 0), we want to prevent glob_vector from
+ adding a null directory name to the front of the temp_results
+ array. We turn off ADDCURDIR if not called recursively and
+ dlen == 0 */
+#endif
+ if (directory_len == 0 && (flags & GX_ALLDIRS) == 0)
+ dflags &= ~GX_ADDCURDIR;
+ }
+ temp_results = glob_vector (filename,
+ (directory_len == 0 ? "." : directory_name),
+ dflags);
if (temp_results == NULL || temp_results == (char **)&glob_error_return)
- return (temp_results);
+ {
+ if (free_dirname)
+ free (directory_name);
+ QUIT; /* XXX - shell */
+ run_pending_traps ();
+ return (temp_results);
+ }
- return (glob_dir_to_array (directory_name, temp_results));
+ result = glob_dir_to_array ((dflags & GX_ALLDIRS) ? "" : directory_name, temp_results, flags);
+
+ if (free_dirname)
+ free (directory_name);
+ return (result);
}
/* We get to memory_error if the program has run out of memory, or
free (result[i]);
free ((char *) result);
}
-#if defined (SHELL)
- if (interrupt_state)
- throw_to_top_level ();
-#endif /* SHELL */
+
+ if (free_dirname && directory_name)
+ free (directory_name);
+
+ QUIT;
+ run_pending_traps ();
+
return (NULL);
}
-\f
+
#if defined (TEST)
main (argc, argv)
for (i = 1; i < argc; ++i)
{
- char **value = glob_filename (argv[i]);
+ char **value = glob_filename (argv[i], 0);
if (value == NULL)
puts ("Out of memory.");
else if (value == &glob_error_return)
projects / platform / upstream / bash.git / blobdiff