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authorMartin von Zweigbergk <martin.von.zweigbergk@gmail.com>2011-02-16 05:47:44 -0500
committerJunio C Hamano <gitster@pobox.com>2011-02-16 13:20:50 -0800
commitac49f5ca84d82e5b10bc1eb022dfdd9b0e8f7749 (patch)
tree418f03c9befc275a222889dde09610b5e9440cc2
parent685e9d9145a186a4b2036ecf2be73cc86d99a9b7 (diff)
downloadgit-ac49f5ca84d82e5b10bc1eb022dfdd9b0e8f7749.tar.gz
rerere "remaining"
After "rerere" resolves conflicts by reusing old resolution, there would be three kinds of paths with conflict in the index: * paths that have been resolved in the working tree by rerere; * paths that need further work whose resolution could be recorded; * paths that need resolving that rerere won't help. When the user wants a list of paths that need hand-resolving, output from "rerere status" does not help, as it shows only the second category, but the paths in the third category still needs work (rerere only makes sense for regular files that have both our side and their side, and does not help other kinds of conflicts, e.g. "we modified, they deleted"). The new subcommand "rerere remaining" can be used to show both. As opposed to "rerere status", this subcommand also skips printing paths that have been added to the index, since these paths are already resolved and are no longer "remaining". Initial patch provided by Junio. Refactored and modified to skip resolved paths by Martin. Commit message mostly by Junio. Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Martin von Zweigbergk <martin.von.zweigbergk@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--builtin/rerere.c14
-rw-r--r--rerere.c78
-rw-r--r--rerere.h8
3 files changed, 88 insertions, 12 deletions
diff --git a/builtin/rerere.c b/builtin/rerere.c
index 642bf35587..67cbfeb152 100644
--- a/builtin/rerere.c
+++ b/builtin/rerere.c
@@ -8,7 +8,7 @@
#include "xdiff-interface.h"
static const char * const rerere_usage[] = {
- "git rerere [clear | status | diff | gc]",
+ "git rerere [clear | status | remaining | diff | gc]",
NULL,
};
@@ -156,7 +156,17 @@ int cmd_rerere(int argc, const char **argv, const char *prefix)
else if (!strcmp(argv[0], "status"))
for (i = 0; i < merge_rr.nr; i++)
printf("%s\n", merge_rr.items[i].string);
- else if (!strcmp(argv[0], "diff"))
+ else if (!strcmp(argv[0], "remaining")) {
+ rerere_remaining(&merge_rr);
+ for (i = 0; i < merge_rr.nr; i++) {
+ if (merge_rr.items[i].util != RERERE_RESOLVED)
+ printf("%s\n", merge_rr.items[i].string);
+ else
+ /* prepare for later call to
+ * string_list_clear() */
+ merge_rr.items[i].util = NULL;
+ }
+ } else if (!strcmp(argv[0], "diff"))
for (i = 0; i < merge_rr.nr; i++) {
const char *path = merge_rr.items[i].string;
const char *name = (const char *)merge_rr.items[i].util;
diff --git a/rerere.c b/rerere.c
index d260843475..22996bd08b 100644
--- a/rerere.c
+++ b/rerere.c
@@ -7,6 +7,11 @@
#include "ll-merge.h"
#include "attr.h"
+#define RESOLVED 0
+#define PUNTED 1
+#define THREE_STAGED 2
+void *RERERE_RESOLVED = &RERERE_RESOLVED;
+
/* if rerere_enabled == -1, fall back to detection of .git/rr-cache */
static int rerere_enabled = -1;
@@ -345,21 +350,74 @@ static int handle_cache(const char *path, unsigned char *sha1, const char *outpu
return hunk_no;
}
-static int find_conflict(struct string_list *conflict)
+static int check_one_conflict(int i, int *type)
{
- int i;
- if (read_cache() < 0)
- return error("Could not read index");
- for (i = 0; i+1 < active_nr; i++) {
+ struct cache_entry *e = active_cache[i];
+
+ if (!ce_stage(e)) {
+ *type = RESOLVED;
+ return i + 1;
+ }
+
+ *type = PUNTED;
+ if (ce_stage(e) == 1) {
+ if (active_nr <= ++i)
+ return i + 1;
+ }
+
+ /* Only handle regular files with both stages #2 and #3 */
+ if (i + 1 < active_nr) {
struct cache_entry *e2 = active_cache[i];
- struct cache_entry *e3 = active_cache[i+1];
+ struct cache_entry *e3 = active_cache[i + 1];
if (ce_stage(e2) == 2 &&
ce_stage(e3) == 3 &&
- ce_same_name(e2, e3) &&
+ ce_same_name(e, e3) &&
S_ISREG(e2->ce_mode) &&
- S_ISREG(e3->ce_mode)) {
- string_list_insert(conflict, (const char *)e2->name);
- i++; /* skip over both #2 and #3 */
+ S_ISREG(e3->ce_mode))
+ *type = THREE_STAGED;
+ }
+
+ /* Skip the entries with the same name */
+ while (i < active_nr && ce_same_name(e, active_cache[i]))
+ i++;
+ return i;
+}
+
+static int find_conflict(struct string_list *conflict)
+{
+ int i;
+ if (read_cache() < 0)
+ return error("Could not read index");
+
+ for (i = 0; i < active_nr;) {
+ int conflict_type;
+ struct cache_entry *e = active_cache[i];
+ i = check_one_conflict(i, &conflict_type);
+ if (conflict_type == THREE_STAGED)
+ string_list_insert(conflict, (const char *)e->name);
+ }
+ return 0;
+}
+
+int rerere_remaining(struct string_list *merge_rr)
+{
+ int i;
+ if (read_cache() < 0)
+ return error("Could not read index");
+
+ for (i = 0; i < active_nr;) {
+ int conflict_type;
+ struct cache_entry *e = active_cache[i];
+ i = check_one_conflict(i, &conflict_type);
+ if (conflict_type == PUNTED)
+ string_list_insert(merge_rr, (const char *)e->name);
+ else if (conflict_type == RESOLVED) {
+ struct string_list_item *it;
+ it = string_list_lookup(merge_rr, (const char *)e->name);
+ if (it != NULL) {
+ free(it->util);
+ it->util = RERERE_RESOLVED;
+ }
}
}
return 0;
diff --git a/rerere.h b/rerere.h
index eaa9004dcd..595f49f701 100644
--- a/rerere.h
+++ b/rerere.h
@@ -6,11 +6,19 @@
#define RERERE_AUTOUPDATE 01
#define RERERE_NOAUTOUPDATE 02
+/*
+ * Marks paths that have been hand-resolved and added to the
+ * index. Set in the util field of such paths after calling
+ * rerere_remaining.
+ */
+extern void *RERERE_RESOLVED;
+
extern int setup_rerere(struct string_list *, int);
extern int rerere(int);
extern const char *rerere_path(const char *hex, const char *file);
extern int has_rerere_resolution(const char *hex);
extern int rerere_forget(const char **);
+extern int rerere_remaining(struct string_list *);
#define OPT_RERERE_AUTOUPDATE(v) OPT_UYN(0, "rerere-autoupdate", (v), \
"update the index with reused conflict resolution if possible")