match_pathspec_depth() is a clone of match_pathspec() except that it
can take depth limit. Computation is a bit lighter compared to
match_pathspec() because it's usually precomputed and stored in struct
pathspec.
In long term, match_pathspec() and match_one() should be removed in
favor of this function.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
dir.c | 89 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
dir.h | 3 ++
2 files changed, 92 insertions(+), 0 deletions(-)
diff --git a/dir.c b/dir.c
index 66c163f..b1407a5 100644
--- a/dir.c
+++ b/dir.c
@@ -169,6 +169,95 @@ int match_pathspec(const char **pathspec, const char *name, int namelen,
return retval;
}
+/*
+ * Does 'match' match 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_pathspec_item(const struct pathspec_item *item, int prefix,
+ const char *name, int namelen)
+{
+ /* name/namelen has prefix cut off by caller */
+ const char *match = item->match + prefix;
+ int matchlen = item->len - prefix;
+
+ /* If the match was just the prefix, we matched */
+ if (!*match)
+ return MATCHED_RECURSIVELY;
+
+ if (matchlen <= namelen && !strncmp(match, name, matchlen)) {
+ if (matchlen == namelen)
+ return MATCHED_EXACTLY;
+
+ if (match[matchlen-1] == '/' || name[matchlen] == '/')
+ return MATCHED_RECURSIVELY;
+ }
+
+ if (item->has_wildcard && !fnmatch(match, name, 0))
+ return MATCHED_FNMATCH;
+
+ 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_depth(const struct pathspec *ps,
+ const char *name, int namelen,
+ int prefix, char *seen)
+{
+ int i, retval = 0;
+
+ if (!ps->nr) {
+ if (!ps->recursive || ps->max_depth == -1)
+ return MATCHED_RECURSIVELY;
+
+ if (within_depth(name, namelen, 0, ps->max_depth))
+ return MATCHED_EXACTLY;
+ else
+ return 0;
+ }
+
+ name += prefix;
+ namelen -= prefix;
+
+ for (i = ps->nr - 1; i >= 0; i--) {
+ int how;
+ if (seen && seen[i] == MATCHED_EXACTLY)
+ continue;
+ how = match_pathspec_item(ps->items+i, prefix, name, namelen);
+ if (ps->recursive && ps->max_depth != -1 &&
+ how && how != MATCHED_FNMATCH) {
+ int len = ps->items[i].len;
+ if (name[len] == '/')
+ len++;
+ if (within_depth(name+len, namelen-len, 0, ps->max_depth))
+ how = MATCHED_EXACTLY;
+ else
+ how = 0;
+ }
+ if (how) {
+ if (retval < how)
+ retval = how;
+ if (seen && seen[i] < how)
+ seen[i] = how;
+ }
+ }
+ return retval;
+}
+
static int no_wildcard(const char *string)
{
return string[strcspn(string, "*?[{\\")] == '\0';
diff --git a/dir.h b/dir.h
index c71de08..ddb4147 100644
--- a/dir.h
+++ b/dir.h
@@ -65,6 +65,9 @@ struct dir_struct {
#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 match_pathspec_depth(const struct pathspec *pathspec,
+ const char *name, int namelen,
+ int prefix, char *seen);
extern int within_depth(const char *name, int namelen, int depth, int max_depth);
extern int fill_directory(struct dir_struct *dir, const char **pathspec);
--
1.7.3.3.476.g10a82
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