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rerere: libify rerere_clear() and rerere_gc()

This moves the two features from builtin/rerere.c to a more library-ish
portion of the codebase.  No behaviour change.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
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1 parent 9db1941 commit 0f891e7d7eb54f9dca93dc3d462eb38082a3460f @gitster gitster committed
Showing with 88 additions and 75 deletions.
  1. +2 −75 builtin/rerere.c
  2. +84 −0 rerere.c
  3. +2 −0 rerere.h
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77 builtin/rerere.c
@@ -12,74 +12,6 @@ static const char * const rerere_usage[] = {
NULL,
};
-/* these values are days */
-static int cutoff_noresolve = 15;
-static int cutoff_resolve = 60;
-
-static time_t rerere_created_at(const char *name)
-{
- struct stat st;
- return stat(rerere_path(name, "preimage"), &st) ? (time_t) 0 : st.st_mtime;
-}
-
-static time_t rerere_last_used_at(const char *name)
-{
- struct stat st;
- return stat(rerere_path(name, "postimage"), &st) ? (time_t) 0 : st.st_mtime;
-}
-
-static void unlink_rr_item(const char *name)
-{
- unlink(rerere_path(name, "thisimage"));
- unlink(rerere_path(name, "preimage"));
- unlink(rerere_path(name, "postimage"));
- rmdir(git_path("rr-cache/%s", name));
-}
-
-static int git_rerere_gc_config(const char *var, const char *value, void *cb)
-{
- if (!strcmp(var, "gc.rerereresolved"))
- cutoff_resolve = git_config_int(var, value);
- else if (!strcmp(var, "gc.rerereunresolved"))
- cutoff_noresolve = git_config_int(var, value);
- else
- return git_default_config(var, value, cb);
- return 0;
-}
-
-static void garbage_collect(struct string_list *rr)
-{
- struct string_list to_remove = STRING_LIST_INIT_DUP;
- DIR *dir;
- struct dirent *e;
- int i, cutoff;
- time_t now = time(NULL), then;
-
- git_config(git_rerere_gc_config, NULL);
- dir = opendir(git_path("rr-cache"));
- if (!dir)
- die_errno("unable to open rr-cache directory");
- while ((e = readdir(dir))) {
- if (is_dot_or_dotdot(e->d_name))
- continue;
-
- then = rerere_last_used_at(e->d_name);
- if (then) {
- cutoff = cutoff_resolve;
- } else {
- then = rerere_created_at(e->d_name);
- if (!then)
- continue;
- cutoff = cutoff_noresolve;
- }
- if (then < now - cutoff * 86400)
- string_list_append(&to_remove, e->d_name);
- }
- for (i = 0; i < to_remove.nr; i++)
- unlink_rr_item(to_remove.items[i].string);
- string_list_clear(&to_remove, 0);
-}
-
static int outf(void *dummy, mmbuffer_t *ptr, int nbuf)
{
int i;
@@ -148,14 +80,9 @@ int cmd_rerere(int argc, const char **argv, const char *prefix)
return 0;
if (!strcmp(argv[0], "clear")) {
- for (i = 0; i < merge_rr.nr; i++) {
- const char *name = (const char *)merge_rr.items[i].util;
- if (!has_rerere_resolution(name))
- unlink_rr_item(name);
- }
- unlink_or_warn(git_path("MERGE_RR"));
+ rerere_clear(&merge_rr);
} else if (!strcmp(argv[0], "gc"))
- garbage_collect(&merge_rr);
+ rerere_gc(&merge_rr);
else if (!strcmp(argv[0], "status"))
for (i = 0; i < merge_rr.nr; i++)
printf("%s\n", merge_rr.items[i].string);
View
84 rerere.c
@@ -671,3 +671,87 @@ int rerere_forget(const char **pathspec)
}
return write_rr(&merge_rr, fd);
}
+
+static time_t rerere_created_at(const char *name)
+{
+ struct stat st;
+ return stat(rerere_path(name, "preimage"), &st) ? (time_t) 0 : st.st_mtime;
+}
+
+static time_t rerere_last_used_at(const char *name)
+{
+ struct stat st;
+ return stat(rerere_path(name, "postimage"), &st) ? (time_t) 0 : st.st_mtime;
+}
+
+static void unlink_rr_item(const char *name)
+{
+ unlink(rerere_path(name, "thisimage"));
+ unlink(rerere_path(name, "preimage"));
+ unlink(rerere_path(name, "postimage"));
+ rmdir(git_path("rr-cache/%s", name));
+}
+
+struct rerere_gc_config_cb {
+ int cutoff_noresolve;
+ int cutoff_resolve;
+};
+
+static int git_rerere_gc_config(const char *var, const char *value, void *cb)
+{
+ struct rerere_gc_config_cb *cf = cb;
+
+ if (!strcmp(var, "gc.rerereresolved"))
+ cf->cutoff_resolve = git_config_int(var, value);
+ else if (!strcmp(var, "gc.rerereunresolved"))
+ cf->cutoff_noresolve = git_config_int(var, value);
+ else
+ return git_default_config(var, value, cb);
+ return 0;
+}
+
+void rerere_gc(struct string_list *rr)
+{
+ struct string_list to_remove = STRING_LIST_INIT_DUP;
+ DIR *dir;
+ struct dirent *e;
+ int i, cutoff;
+ time_t now = time(NULL), then;
+ struct rerere_gc_config_cb cf = { 15, 60 };
+
+ git_config(git_rerere_gc_config, &cf);
+ dir = opendir(git_path("rr-cache"));
+ if (!dir)
+ die_errno("unable to open rr-cache directory");
+ while ((e = readdir(dir))) {
+ if (is_dot_or_dotdot(e->d_name))
+ continue;
+
+ then = rerere_last_used_at(e->d_name);
+ if (then) {
+ cutoff = cf.cutoff_resolve;
+ } else {
+ then = rerere_created_at(e->d_name);
+ if (!then)
+ continue;
+ cutoff = cf.cutoff_noresolve;
+ }
+ if (then < now - cutoff * 86400)
+ string_list_append(&to_remove, e->d_name);
+ }
+ for (i = 0; i < to_remove.nr; i++)
+ unlink_rr_item(to_remove.items[i].string);
+ string_list_clear(&to_remove, 0);
+}
+
+void rerere_clear(struct string_list *merge_rr)
+{
+ int i;
+
+ for (i = 0; i < merge_rr->nr; i++) {
+ const char *name = (const char *)merge_rr->items[i].util;
+ if (!has_rerere_resolution(name))
+ unlink_rr_item(name);
+ }
+ unlink_or_warn(git_path("MERGE_RR"));
+}
View
2 rerere.h
@@ -19,6 +19,8 @@ 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 *);
+extern void rerere_clear(struct string_list *);
+extern void rerere_gc(struct string_list *);
#define OPT_RERERE_AUTOUPDATE(v) OPT_UYN(0, "rerere-autoupdate", (v), \
"update the index with reused conflict resolution if possible")

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