[PATCH/RFC v2 03/16] Modify match_stat_basic to prepare for other index formats

[Thomas Gummerer <t.gummerer@gmail.com>]

Modify match_stat_basic, into one function that handles the
general case, which is the same for all index formats, and
a function that handles the specific parts for each index
file version.

Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
---
 read-cache.c |   71 +++++++++++++++++++++++++++++++++-------------------------
 1 file changed, 40 insertions(+), 31 deletions(-)

diff --git a/read-cache.c b/read-cache.c
index 24b5e02..6e8991a 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -163,38 +163,10 @@ static int ce_modified_check_fs(struct cache_entry *ce, struct stat *st)
 	return 0;
 }
 
-static int ce_match_stat_basic(struct cache_entry *ce, struct stat *st)
+static int ce_match_stat_basic_v2(struct cache_entry *ce,
+				struct stat *st,
+				int changed)
 {
-	unsigned int changed = 0;
-
-	if (ce->ce_flags & CE_REMOVE)
-		return MODE_CHANGED | DATA_CHANGED | TYPE_CHANGED;
-
-	switch (ce->ce_mode & S_IFMT) {
-	case S_IFREG:
-		changed |= !S_ISREG(st->st_mode) ? TYPE_CHANGED : 0;
-		/* We consider only the owner x bit to be relevant for
-		 * "mode changes"
-		 */
-		if (trust_executable_bit &&
-		    (0100 & (ce->ce_mode ^ st->st_mode)))
-			changed |= MODE_CHANGED;
-		break;
-	case S_IFLNK:
-		if (!S_ISLNK(st->st_mode) &&
-		    (has_symlinks || !S_ISREG(st->st_mode)))
-			changed |= TYPE_CHANGED;
-		break;
-	case S_IFGITLINK:
-		/* We ignore most of the st_xxx fields for gitlinks */
-		if (!S_ISDIR(st->st_mode))
-			changed |= TYPE_CHANGED;
-		else if (ce_compare_gitlink(ce))
-			changed |= DATA_CHANGED;
-		return changed;
-	default:
-		die("internal error: ce_mode is %o", ce->ce_mode);
-	}
 	if (ce->ce_mtime.sec != (unsigned int)st->st_mtime)
 		changed |= MTIME_CHANGED;
 	if (trust_ctime && ce->ce_ctime.sec != (unsigned int)st->st_ctime)
@@ -235,6 +207,43 @@ static int ce_match_stat_basic(struct cache_entry *ce, struct stat *st)
 	return changed;
 }
 
+static int ce_match_stat_basic(struct cache_entry *ce, struct stat *st)
+{
+	unsigned int changed = 0;
+
+	if (ce->ce_flags & CE_REMOVE)
+		return MODE_CHANGED | DATA_CHANGED | TYPE_CHANGED;
+
+	switch (ce->ce_mode & S_IFMT) {
+	case S_IFREG:
+		changed |= !S_ISREG(st->st_mode) ? TYPE_CHANGED : 0;
+		/* We consider only the owner x bit to be relevant for
+		 * "mode changes"
+		 */
+		if (trust_executable_bit &&
+		    (0100 & (ce->ce_mode ^ st->st_mode)))
+			changed |= MODE_CHANGED;
+		break;
+	case S_IFLNK:
+		if (!S_ISLNK(st->st_mode) &&
+		    (has_symlinks || !S_ISREG(st->st_mode)))
+			changed |= TYPE_CHANGED;
+		break;
+	case S_IFGITLINK:
+		/* We ignore most of the st_xxx fields for gitlinks */
+		if (!S_ISDIR(st->st_mode))
+			changed |= TYPE_CHANGED;
+		else if (ce_compare_gitlink(ce))
+			changed |= DATA_CHANGED;
+		return changed;
+	default:
+		die("internal error: ce_mode is %o", ce->ce_mode);
+	}
+
+	changed = ce_match_stat_basic_v2(ce, st, changed);
+	return changed;
+}
+
 static int is_racy_timestamp(const struct index_state *istate, struct cache_entry *ce)
 {
 	return (!S_ISGITLINK(ce->ce_mode) &&
-- 
1.7.10.GIT