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builtin-grep: tighten path wildcard vs tree traversal.

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The earlier code descended into Documentation/technical when
given "Documentation/how*" as the pattern, which was too loose.

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano 2006-05-02 17:27:07 -07:00
parent 7839a25eab
commit 1e3d90e013
1 changed files with 20 additions and 15 deletions
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35
builtin-grep.c
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@ -26,7 +26,7 @@ static int pathspec_matches(const char **paths, const char *name)
for (i = 0; paths[i]; i++) {
const char *match = paths[i];
int matchlen = strlen(match);
const char *slash, *cp;
const char *cp, *meta;
if ((matchlen <= namelen) &&
!strncmp(name, match, matchlen) &&
@ -38,38 +38,43 @@ static int pathspec_matches(const char **paths, const char *name)
if (name[namelen-1] != '/')
continue;
/* We are being asked if the name directory is worth
/* We are being asked if the directory ("name") is worth
* descending into.
*
* Find the longest leading directory name that does
* not have metacharacter in the pathspec; the name
* we are looking at must overlap with that directory.
*/
for (cp = match, slash = NULL; cp - match < matchlen; cp++) {
for (cp = match, meta = NULL; cp - match < matchlen; cp++) {
char ch = *cp;
if (ch == '/')
slash = cp;
if (ch == '*' || ch == '[')
if (ch == '*' || ch == '[' || ch == '?') {
meta = cp;
break;
}
}
if (!slash)
slash = match; /* toplevel */
else
slash++;
if (namelen <= slash - match) {
if (!meta)
meta = cp; /* fully literal */
if (namelen <= meta - match) {
/* Looking at "Documentation/" and
* the pattern says "Documentation/howto/", or
* "Documentation/diff*.txt".
* "Documentation/diff*.txt". The name we
* have should match prefix.
*/
if (!memcmp(match, name, namelen))
return 1;
continue;
}
else {
if (meta - match < namelen) {
/* Looking at "Documentation/howto/" and
* the pattern says "Documentation/h*".
* the pattern says "Documentation/h*";
* match up to "Do.../h"; this avoids descending
* into "Documentation/technical/".
*/
if (!memcmp(match, name, slash - match))
if (!memcmp(match, name, meta - match))
return 1;
continue;
}
}
return 0;