This updates the return value from match_pathspec() so that the
caller can tell cases between exact match, leading pathname
match (i.e. file "foo/bar" matches a pathspec "foo"), or
filename glob match. This can be used to prevent "rm dir" from
removing "dir/file" without explicitly asking for recursive
behaviour with -r flag, for example.
Signed-off-by: Junio C Hamano <junkio@xxxxxxx>
---
dir.c | 51 +++++++++++++++++++++++++++++++++++----------------
dir.h | 4 ++++
2 files changed, 39 insertions(+), 16 deletions(-)
diff --git a/dir.c b/dir.c
index 16401d8..8477472 100644
--- a/dir.c
+++ b/dir.c
@@ -40,6 +40,18 @@ int common_prefix(const char **pathspec)
return prefix;
}
+/*
+ * Does 'match' matches the given name?
+ * A match is found if
+ *
+ * (1) the 'match' string is leading directory of 'name', or
+ * (2) the 'match' string is a wildcard and matches 'name', or
+ * (3) the 'match' string is exactly the same as 'name'.
+ *
+ * and the return value tells which case it was.
+ *
+ * It returns 0 when there is no match.
+ */
static int match_one(const char *match, const char *name, int namelen)
{
int matchlen;
@@ -47,27 +59,30 @@ static int match_one(const char *match, const char *name, int namelen)
/* If the match was just the prefix, we matched */
matchlen = strlen(match);
if (!matchlen)
- return 1;
+ return MATCHED_RECURSIVELY;
/*
* If we don't match the matchstring exactly,
* we need to match by fnmatch
*/
if (strncmp(match, name, matchlen))
- return !fnmatch(match, name, 0);
+ return !fnmatch(match, name, 0) ? MATCHED_FNMATCH : 0;
- /*
- * If we did match the string exactly, we still
- * need to make sure that it happened on a path
- * component boundary (ie either the last character
- * of the match was '/', or the next character of
- * the name was '/' or the terminating NUL.
- */
- return match[matchlen-1] == '/' ||
- name[matchlen] == '/' ||
- !name[matchlen];
+ if (!name[matchlen])
+ return MATCHED_EXACTLY;
+ if (match[matchlen-1] == '/' || name[matchlen] == '/')
+ return MATCHED_RECURSIVELY;
+ return 0;
}
+/*
+ * Given a name and a list of pathspecs, see if the name matches
+ * any of the pathspecs. The caller is also interested in seeing
+ * all pathspec matches some names it calls this function with
+ * (otherwise the user could have mistyped the unmatched pathspec),
+ * and a mark is left in seen[] array for pathspec element that
+ * actually matched anything.
+ */
int match_pathspec(const char **pathspec, const char *name, int namelen, int prefix, char *seen)
{
int retval;
@@ -77,12 +92,16 @@ int match_pathspec(const char **pathspec, const char *name, int namelen, int pre
namelen -= prefix;
for (retval = 0; (match = *pathspec++) != NULL; seen++) {
- if (retval & *seen)
+ int how;
+ if (retval && *seen == MATCHED_EXACTLY)
continue;
match += prefix;
- if (match_one(match, name, namelen)) {
- retval = 1;
- *seen = 1;
+ how = match_one(match, name, namelen);
+ if (how) {
+ if (retval < how)
+ retval = how;
+ if (*seen < how)
+ *seen = how;
}
}
return retval;
diff --git a/dir.h b/dir.h
index 550551a..c919727 100644
--- a/dir.h
+++ b/dir.h
@@ -40,6 +40,10 @@ struct dir_struct {
};
extern int common_prefix(const char **pathspec);
+
+#define MATCHED_RECURSIVELY 1
+#define MATCHED_FNMATCH 2
+#define MATCHED_EXACTLY 3
extern int match_pathspec(const char **pathspec, const char *name, int namelen, int prefix, char *seen);
extern int read_directory(struct dir_struct *, const char *path, const char *base, int baselen);
--
1.4.4.3.g50da
-
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