+#include "builtin.h"
#include "cache.h"
#include "path-list.h"
#include "xdiff/xdiff.h"
static int cutoff_noresolve = 15;
static int cutoff_resolve = 60;
+/* if rerere_enabled == -1, fall back to detection of .git/rr-cache */
+static int rerere_enabled = -1;
+
static char *merge_rr_path;
static const char *rr_path(const char *name, const char *file)
int i;
for (i = 0; i < rr->nr; i++) {
const char *path = rr->items[i].path;
- write(out_fd, rr->items[i].util, 40);
- write(out_fd, "\t", 1);
- write(out_fd, path, strlen(path) + 1);
+ int length = strlen(path) + 1;
+ if (write_in_full(out_fd, rr->items[i].util, 40) != 40 ||
+ write_in_full(out_fd, "\t", 1) != 1 ||
+ write_in_full(out_fd, path, length) != length)
+ die("unable to write rerere record");
}
- close(out_fd);
+ if (close(out_fd) != 0)
+ die("unable to write rerere record");
return commit_lock_file(&write_lock);
}
buffer->nr += len;
}
+static void clear_buffer(struct buffer *buffer)
+{
+ free(buffer->ptr);
+ buffer->ptr = NULL;
+ buffer->nr = buffer->alloc = 0;
+}
+
static int handle_file(const char *path,
unsigned char *sha1, const char *output)
{
SHA1_Init(&ctx);
while (fgets(buf, sizeof(buf), f)) {
- if (!strncmp("<<<<<<< ", buf, 8))
+ if (!prefixcmp(buf, "<<<<<<< "))
hunk = 1;
- else if (!strncmp("=======", buf, 7))
+ else if (!prefixcmp(buf, "======="))
hunk = 2;
- else if (!strncmp(">>>>>>> ", buf, 8)) {
+ else if (!prefixcmp(buf, ">>>>>>> ")) {
+ int one_is_longer = (one->nr > two->nr);
+ int common_len = one_is_longer ? two->nr : one->nr;
+ int cmp = memcmp(one->ptr, two->ptr, common_len);
+
hunk_no++;
hunk = 0;
- if (memcmp(one->ptr, two->ptr, one->nr < two->nr ?
- one->nr : two->nr) > 0) {
+ if ((cmp > 0) || ((cmp == 0) && one_is_longer)) {
struct buffer *swap = one;
one = two;
two = swap;
SHA1_Update(&ctx, two->ptr, two->nr);
SHA1_Update(&ctx, "\0", 1);
}
+ clear_buffer(one);
+ clear_buffer(two);
} else if (hunk == 1)
append_line(one, buf);
else if (hunk == 2)
int i;
if (read_cache() < 0)
return error("Could not read index");
- for (i = 0; i + 2 < active_nr; i++) {
- struct cache_entry *e1 = active_cache[i];
- struct cache_entry *e2 = active_cache[i + 1];
- struct cache_entry *e3 = active_cache[i + 2];
- if (ce_stage(e1) == 1 && ce_stage(e2) == 2 &&
- ce_stage(e3) == 3 && ce_same_name(e1, e2) &&
- ce_same_name(e1, e3)) {
- path_list_insert((const char *)e1->name, conflict);
- i += 3;
+ for (i = 0; i+1 < active_nr; i++) {
+ struct cache_entry *e2 = active_cache[i];
+ struct cache_entry *e3 = active_cache[i+1];
+ if (ce_stage(e2) == 2 &&
+ ce_stage(e3) == 3 &&
+ ce_same_name(e2, e3) &&
+ S_ISREG(ntohl(e2->ce_mode)) &&
+ S_ISREG(ntohl(e3->ce_mode))) {
+ path_list_insert((const char *)e2->name, conflict);
+ i++; /* skip over both #2 and #3 */
}
}
return 0;
{
int i;
for (i = 0; i < nbuf; i++)
- write(1, ptr[i].ptr, ptr[i].size);
+ if (write_in_full(1, ptr[i].ptr, ptr[i].size) != ptr[i].size)
+ return -1;
return 0;
}
printf("--- a/%s\n+++ b/%s\n", label1, label2);
fflush(stdout);
xpp.flags = XDF_NEED_MINIMAL;
+ memset(&xecfg, 0, sizeof(xecfg));
xecfg.ctxlen = 3;
- xecfg.flags = 0;
ecb.outf = outf;
xdl_diff(&minus, &plus, &xpp, &xecfg, &ecb);
fprintf(stderr, "Recorded resolution for '%s'.\n", path);
copy_file(path, rr_path(name, "postimage"));
tail_optimization:
- if (i < rr->nr - 1) {
+ if (i < rr->nr - 1)
memmove(rr->items + i,
- rr->items + i + 1,
- rr->nr - i - 1);
- }
+ rr->items + i + 1,
+ sizeof(rr->items[0]) * (rr->nr - i - 1));
rr->nr--;
i--;
}
cutoff_resolve = git_config_int(var, value);
else if (!strcmp(var, "gc.rerereunresolved"))
cutoff_noresolve = git_config_int(var, value);
+ else if (!strcmp(var, "rerere.enabled"))
+ rerere_enabled = git_config_bool(var, value);
else
return git_default_config(var, value);
return 0;
}
-int cmd_rerere(int argc, const char **argv, const char *prefix)
+static int is_rerere_enabled(void)
{
- struct path_list merge_rr = { NULL, 0, 0, 1 };
- int i, fd = -1;
struct stat st;
+ const char *rr_cache;
+ int rr_cache_exists;
- if (stat(git_path("rr-cache"), &st) || !S_ISDIR(st.st_mode))
+ if (!rerere_enabled)
return 0;
+ rr_cache = git_path("rr-cache");
+ rr_cache_exists = !stat(rr_cache, &st) && S_ISDIR(st.st_mode);
+ if (rerere_enabled < 0)
+ return rr_cache_exists;
+
+ if (!rr_cache_exists &&
+ (mkdir(rr_cache, 0777) || adjust_shared_perm(rr_cache)))
+ die("Could not create directory %s", rr_cache);
+ return 1;
+}
+
+int cmd_rerere(int argc, const char **argv, const char *prefix)
+{
+ struct path_list merge_rr = { NULL, 0, 0, 1 };
+ int i, fd = -1;
+
git_config(git_rerere_config);
+ if (!is_rerere_enabled())
+ return 0;
merge_rr_path = xstrdup(git_path("rr-cache/MERGE_RR"));
fd = hold_lock_file_for_update(&write_lock, merge_rr_path, 1);
return do_plain_rerere(&merge_rr, fd);
else if (!strcmp(argv[1], "clear")) {
for (i = 0; i < merge_rr.nr; i++) {
+ struct stat st;
const char *name = (const char *)merge_rr.items[i].util;
if (!stat(git_path("rr-cache/%s", name), &st) &&
S_ISDIR(st.st_mode) &&
path_list_clear(&merge_rr, 1);
return 0;
}
-