In a similar way to the previous commit, this extracts new helper
functions excluded_1() and path_excluded_1() which return the last
exclude_list element which matched, or NULL if no match was found.
excluded() and path_excluded() become wrappers around these, and just
return 0 or 1 depending on whether any matching exclude_list element
was found.
This allows callers to find out _why_ a given path was excluded,
rather than just whether it was or not, paving the way for a new git
sub-command which allows users to test their exclude lists from the
command line.
Signed-off-by: Adam Spiers <git@xxxxxxxxxxxxxx>
---
dir.c | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++--------------
dir.h | 3 +++
2 files changed, 67 insertions(+), 17 deletions(-)
diff --git a/dir.c b/dir.c
index 3a532d5..3d438c3 100644
--- a/dir.c
+++ b/dir.c
@@ -603,23 +603,42 @@ int excluded_from_list(const char *pathname,
return -1; /* undecided */
}
-static int excluded(struct dir_struct *dir, const char *pathname, int *dtype_p)
+/*
+ * Loads the exclude lists for the directory containing pathname, then
+ * scans all exclude lists to determine whether pathname is excluded.
+ * Returns the exclude_list element which matched, or NULL for
+ * undecided.
+ */
+static struct exclude *excluded_1(struct dir_struct *dir, const char *pathname, int *dtype_p)
{
int pathlen = strlen(pathname);
int st;
+ struct exclude *exclude;
const char *basename = strrchr(pathname, '/');
basename = (basename) ? basename+1 : pathname;
prep_exclude(dir, pathname, basename-pathname);
for (st = EXC_CMDL; st <= EXC_FILE; st++) {
- switch (excluded_from_list(pathname, pathlen, basename,
- dtype_p, &dir->exclude_list[st])) {
- case 0:
- return 0;
- case 1:
- return 1;
+ exclude = excluded_from_list_1(pathname, pathlen, basename,
+ dtype_p, &dir->exclude_list[st]);
+ if (exclude) {
+ return exclude;
}
}
+ return NULL;
+}
+
+/*
+ * Loads the exclude lists for the directory containing pathname, then
+ * scans all exclude lists to determine whether pathname is excluded.
+ * Returns 1 if true, otherwise 0.
+ */
+static int excluded(struct dir_struct *dir, const char *pathname, int *dtype_p)
+{
+ struct exclude *exclude = excluded_1(dir, pathname, dtype_p);
+ if (exclude) {
+ return exclude->to_exclude;
+ }
return 0;
}
@@ -627,6 +646,7 @@ void path_exclude_check_init(struct path_exclude_check *check,
struct dir_struct *dir)
{
check->dir = dir;
+ check->exclude = NULL;
strbuf_init(&check->path, 256);
}
@@ -636,18 +656,20 @@ void path_exclude_check_clear(struct path_exclude_check *check)
}
/*
- * Is this name excluded? This is for a caller like show_files() that
- * do not honor directory hierarchy and iterate through paths that are
- * possibly in an ignored directory.
+ * For each subdirectory in name, starting with the top-most, checks
+ * to see if that subdirectory is excluded, and if so, returns the
+ * corresponding exclude structure. Otherwise, checks whether name
+ * itself (which is presumably a file) is excluded.
*
* A path to a directory known to be excluded is left in check->path to
* optimize for repeated checks for files in the same excluded directory.
*/
-int path_excluded(struct path_exclude_check *check,
- const char *name, int namelen, int *dtype)
+struct exclude *path_excluded_1(struct path_exclude_check *check,
+ const char *name, int namelen, int *dtype)
{
int i;
struct strbuf *path = &check->path;
+ struct exclude *exclude;
/*
* we allow the caller to pass namelen as an optimization; it
@@ -657,11 +679,18 @@ int path_excluded(struct path_exclude_check *check,
if (namelen < 0)
namelen = strlen(name);
+ /*
+ * If path is non-empty, and name is equal to path or a
+ * subdirectory of path, name should be excluded, because
+ * it's inside a directory which is already known to be
+ * excluded and was previously left in check->path.
+ */
if (path->len &&
path->len <= namelen &&
!memcmp(name, path->buf, path->len) &&
- (!name[path->len] || name[path->len] == '/'))
- return 1;
+ (!name[path->len] || name[path->len] == '/')) {
+ return check->exclude;
+ }
strbuf_setlen(path, 0);
for (i = 0; name[i]; i++) {
@@ -669,8 +698,11 @@ int path_excluded(struct path_exclude_check *check,
if (ch == '/') {
int dt = DT_DIR;
- if (excluded(check->dir, path->buf, &dt))
- return 1;
+ exclude = excluded_1(check->dir, path->buf, &dt);
+ if (exclude) {
+ check->exclude = exclude;
+ return exclude;
+ }
}
strbuf_addch(path, ch);
}
@@ -678,7 +710,22 @@ int path_excluded(struct path_exclude_check *check,
/* An entry in the index; cannot be a directory with subentries */
strbuf_setlen(path, 0);
- return excluded(check->dir, name, dtype);
+ return excluded_1(check->dir, name, dtype);
+}
+
+/*
+ * Is this name excluded? This is for a caller like show_files() that
+ * do not honor directory hierarchy and iterate through paths that are
+ * possibly in an ignored directory.
+ */
+int path_excluded(struct path_exclude_check *check,
+ const char *name, int namelen, int *dtype)
+{
+ struct exclude *exclude = path_excluded_1(check, name, namelen, dtype);
+ if (exclude) {
+ return exclude->to_exclude;
+ }
+ return 0;
}
static struct dir_entry *dir_entry_new(const char *pathname, int len)
diff --git a/dir.h b/dir.h
index 549a187..1b4f9dc 100644
--- a/dir.h
+++ b/dir.h
@@ -109,10 +109,13 @@ struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname,
*/
struct path_exclude_check {
struct dir_struct *dir;
+ struct exclude *exclude;
struct strbuf path;
};
extern void path_exclude_check_init(struct path_exclude_check *, struct dir_struct *);
extern void path_exclude_check_clear(struct path_exclude_check *);
+extern struct exclude *path_excluded_1(struct path_exclude_check *, const char *,
+ int namelen, int *dtype);
extern int path_excluded(struct path_exclude_check *, const char *, int namelen, int *dtype);
--
1.7.12.155.ge5750d5.dirty
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