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-rw-r--r--rerere.c61
-rw-r--r--rerere.h3
2 files changed, 58 insertions, 6 deletions
diff --git a/rerere.c b/rerere.c
index 3d0fa8f551..a5d8a06ceb 100644
--- a/rerere.c
+++ b/rerere.c
@@ -8,6 +8,7 @@
#include "ll-merge.h"
#include "attr.h"
#include "pathspec.h"
+#include "sha1-lookup.h"
#define RESOLVED 0
#define PUNTED 1
@@ -22,6 +23,23 @@ static int rerere_autoupdate;
static char *merge_rr_path;
+static int rerere_dir_nr;
+static int rerere_dir_alloc;
+
+static struct rerere_dir {
+ unsigned char sha1[20];
+} **rerere_dir;
+
+static void free_rerere_dirs(void)
+{
+ int i;
+ for (i = 0; i < rerere_dir_nr; i++)
+ free(rerere_dir[i]);
+ free(rerere_dir);
+ rerere_dir_nr = rerere_dir_alloc = 0;
+ rerere_dir = NULL;
+}
+
static void free_rerere_id(struct string_list_item *item)
{
free(item->util);
@@ -29,7 +47,7 @@ static void free_rerere_id(struct string_list_item *item)
static const char *rerere_id_hex(const struct rerere_id *id)
{
- return id->hex;
+ return sha1_to_hex(id->collection->sha1);
}
const char *rerere_path(const struct rerere_id *id, const char *file)
@@ -40,6 +58,37 @@ const char *rerere_path(const struct rerere_id *id, const char *file)
return git_path("rr-cache/%s/%s", rerere_id_hex(id), file);
}
+static const unsigned char *rerere_dir_sha1(size_t i, void *table)
+{
+ struct rerere_dir **rr_dir = table;
+ return rr_dir[i]->sha1;
+}
+
+static struct rerere_dir *find_rerere_dir(const char *hex)
+{
+ unsigned char sha1[20];
+ struct rerere_dir *rr_dir;
+ int pos;
+
+ if (get_sha1_hex(hex, sha1))
+ return NULL; /* BUG */
+ pos = sha1_pos(sha1, rerere_dir, rerere_dir_nr, rerere_dir_sha1);
+ if (pos < 0) {
+ rr_dir = xmalloc(sizeof(*rr_dir));
+ hashcpy(rr_dir->sha1, sha1);
+ pos = -1 - pos;
+
+ /* Make sure the array is big enough ... */
+ ALLOC_GROW(rerere_dir, rerere_dir_nr + 1, rerere_dir_alloc);
+ /* ... and add it in. */
+ rerere_dir_nr++;
+ memmove(rerere_dir + pos + 1, rerere_dir + pos,
+ (rerere_dir_nr - pos - 1) * sizeof(*rerere_dir));
+ rerere_dir[pos] = rr_dir;
+ }
+ return rerere_dir[pos];
+}
+
static int has_rerere_resolution(const struct rerere_id *id)
{
struct stat st;
@@ -50,7 +99,7 @@ static int has_rerere_resolution(const struct rerere_id *id)
static struct rerere_id *new_rerere_id_hex(char *hex)
{
struct rerere_id *id = xmalloc(sizeof(*id));
- xsnprintf(id->hex, sizeof(id->hex), "%s", hex);
+ id->collection = find_rerere_dir(hex);
return id;
}
@@ -810,12 +859,14 @@ int setup_rerere(struct string_list *merge_rr, int flags)
int rerere(int flags)
{
struct string_list merge_rr = STRING_LIST_INIT_DUP;
- int fd;
+ int fd, status;
fd = setup_rerere(&merge_rr, flags);
if (fd < 0)
return 0;
- return do_plain_rerere(&merge_rr, fd);
+ status = do_plain_rerere(&merge_rr, fd);
+ free_rerere_dirs();
+ return status;
}
static int rerere_forget_one_path(const char *path, struct string_list *rr)
@@ -900,7 +951,7 @@ int rerere_forget(struct pathspec *pathspec)
static struct rerere_id *dirname_to_id(const char *name)
{
static struct rerere_id id;
- xsnprintf(id.hex, sizeof(id.hex), "%s", name);
+ id.collection = find_rerere_dir(name);
return &id;
}
diff --git a/rerere.h b/rerere.h
index ce545d0c04..faf5a2308d 100644
--- a/rerere.h
+++ b/rerere.h
@@ -15,8 +15,9 @@ struct pathspec;
*/
extern void *RERERE_RESOLVED;
+struct rerere_dir;
struct rerere_id {
- char hex[41];
+ struct rerere_dir *collection;
};
extern int setup_rerere(struct string_list *, int);