#include "stdc.h"
#include "memalloc.h"
+#include <signal.h>
+
#include "shell.h"
#include "glob.h"
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;
# define dequote_pathname udequote_pathname
#endif
static void dequote_pathname __P((char *));
-static int glob_testdir __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));
+
/* Compile `glob_loop.c' for single-byte characters. */
#define CHAR unsigned char
#define INT int
#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;
+ int n, r;
+
+ pp = pat + 2;
+ pe = pp + strlen (pp) - 1; /*(*/
+ if (*pe != ')')
+ return 0;
+ if ((t = strchr (pp, '|')) == 0) /* easy case first */
+ {
+ *pe = '\0';
+ r = skipname (pp, dname, flags); /*(*/
+ *pe = ')';
+ return r;
+ }
+ while (t = glob_patscan (pp, pe, '|'))
+ {
+ n = t[-1];
+ t[-1] = '\0';
+ r = skipname (pp, dname, flags);
+ t[-1] = n;
+ if (r == 0) /* if any pattern says not skip, we don't skip */
+ return r;
+ pp = t;
+ } /*(*/
+
+ if (pp == pe) /* glob_patscan might find end of pattern */
+ return r;
+
+ *pe = '\0';
+# if defined (HANDLE_MULTIBYTE)
+ r = mbskipname (pp, dname, flags); /*(*/
+# else
+ r = skipname (pp, dname, flags); /*(*/
+# endif
+ *pe = ')';
+ return r;
+}
+#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] != '.' &&
(dname[1] == '\0' || (dname[1] == '.' && dname[2] == '\0'))))
return 1;
- /* If a dot must be explicity matched, check to see if they do. */
+ /* 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;
}
#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;
+ int r;
+
+ pp = pat + 2;
+ pe = pp + wcslen (pp) - 1; /*(*/
+ if (*pe != L')')
+ return 0;
+ if ((t = wcschr (pp, L'|')) == 0)
+ {
+ *pe = L'\0';
+ r = wchkname (pp, dname); /*(*/
+ *pe = L')';
+ return r;
+ }
+ 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;
+
+ *pe = L'\0';
+ r = wchkname (pp, dname); /*(*/
+ *pe = L')';
+ return r;
+#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;
+ 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);
ret = 0;
if (pat_n != (size_t)-1 && dn_n !=(size_t)-1)
- {
- /* 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'))))
- ret = 1;
-
- /* If a leading dot must be explicity 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'.'))
- ret = 1;
- }
+ ret = ext ? wextglob_skipname (pat_wc, dn_wc, flags) : wchkname (pat_wc, dn_wc);
else
ret = skipname (pat, dname, flags);
/* Return 0 if DIR is a directory, -1 otherwise. */
static int
-glob_testdir (dir)
+glob_testdir (dir, flags)
char *dir;
+ int flags;
{
struct stat finfo;
+ int r;
-/*itrace("glob_testdir: testing %s", dir);*/
- if (stat (dir, &finfo) < 0)
+/*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 ret;
}
-
/* Return a vector of names of files in directory DIR
whose names match glob pattern PAT.
/* If PAT is empty, skip the loop, but return one (empty) filename. */
if (pat == 0 || *pat == '\0')
{
- if (glob_testdir (dir) < 0)
+ if (glob_testdir (dir, 0) < 0)
return ((char **) &glob_error_return);
nextlink = (struct globval *)alloca (sizeof (struct globval));
skip = 1;
}
- patlen = strlen (pat);
+ 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
int dirlen;
struct stat finfo;
- if (glob_testdir (dir) < 0)
+ 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)
- lose = 1;
+ {
+ FREE (nextname);
+ FREE (npat);
+ lose = 1;
+ }
else
{
strcpy (npat, pat);
count = 1;
}
else
- lose = 1;
+ {
+ free (npat);
+ lose = 1;
+ }
}
else
{
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)
+ if (glob_testdir (dir, 0) < 0)
return ((char **) &glob_error_return);
#endif
lose = 1;
break;
}
-
+ else if (signal_is_pending (SIGINT)) /* XXX - make SIGINT traps responsive */
+ {
+ lose = 1;
+ break;
+ }
+
dp = readdir (d);
if (dp == NULL)
break;
if (flags & GX_NULLDIR)
pflags |= MP_IGNDOT;
subdir = sh_makepath (dir, dp->d_name, pflags);
- isdir = glob_testdir (subdir);
+ isdir = glob_testdir (subdir, flags);
if (isdir < 0 && (flags & GX_MATCHDIRS))
{
free (subdir);
nextname = (char *) malloc (sdlen + 1);
if (nextlink == 0 || nextname == 0)
{
+ FREE (nextlink);
+ FREE (nextname);
free (subdir);
lose = 1;
break;
++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)
nextname = (char *) malloc (D_NAMLEN (dp) + 1);
if (nextlink == 0 || nextname == 0)
{
+ FREE (nextlink);
+ FREE (nextname);
lose = 1;
break;
}
nextname = (char *)malloc (sdlen + 1);
nextlink = (struct globval *) malloc (sizeof (struct globval));
if (nextlink == 0 || nextname == 0)
- lose = 1;
+ {
+ FREE (nextlink);
+ FREE (nextname);
+ lose = 1;
+ }
else
{
nextlink->name = nextname;
FREE (tmplink);
}
- QUIT;
+ /* Don't call QUIT; here; let higher layers deal with it. */
return ((char **)NULL);
}
result[i] = (char *) malloc (l + strlen (array[i]) + 3);
if (result[i] == NULL)
- return (NULL);
+ {
+ int ind;
+ for (ind = 0; ind < i; ind++)
+ free (result[ind]);
+ free (result);
+ return (NULL);
+ }
strcpy (result[i], dir);
if (add_slash)
/* 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;
- if ((flags & GX_GLOBSTAR) && directory_name[0] == '*' && directory_name[1] == '*' && (directory_name[2] == '/' || directory_name[2] == '\0'))
- dflags |= GX_ALLDIRS|GX_ADDCURDIR;
+ /* 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 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;
+ }
+
+ /* 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 (directory_name[directory_len - 1] == '/')
- directory_name[directory_len - 1] = '\0';
+ if (d[directory_len - 1] == '/')
+ d[directory_len - 1] = '\0';
- directories = glob_filename (directory_name, dflags);
+ directories = glob_filename (d, dflags);
if (free_dirname)
{
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;
+ 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 `**' */
/* 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')
- array = temp_results;
+ 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;
/* Note that the elements of ARRAY are not freed. */
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')
{
{
if (free_dirname)
free (directory_name);
+ QUIT; /* XXX - shell */
+ run_pending_traps ();
return (temp_results);
}
result = glob_dir_to_array ((dflags & GX_ALLDIRS) ? "" : directory_name, temp_results, flags);
+
if (free_dirname)
free (directory_name);
return (result);
free (directory_name);
QUIT;
+ run_pending_traps ();
return (NULL);
}
projects / platform / upstream / bash.git / blobdiff