#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;
return git_path("rr-cache/%s/%s", hex, file);
}
-int has_rerere_resolution(const char *hex)
+static int has_rerere_resolution(const char *hex)
{
struct stat st;
return !stat(rerere_path(hex, "postimage"), &st);
name = xstrdup(buf);
if (fgetc(in) != '\t')
die("corrupt MERGE_RR");
- for (i = 0; i < sizeof(buf) && (buf[i] = fgetc(in)); i++)
- ; /* do nothing */
+ for (i = 0; i < sizeof(buf); i++) {
+ int c = fgetc(in);
+ if (c < 0)
+ die("corrupt MERGE_RR");
+ buf[i] = c;
+ if (c == 0)
+ break;
+ }
if (i == sizeof(buf))
die("filename too long");
string_list_insert(rr, buf)->util = name;
strbuf_release(sb);
if (!io->input.len)
return -1;
- ep = strchrnul(io->input.buf, '\n');
- if (*ep == '\n')
+ ep = memchr(io->input.buf, '\n', io->input.len);
+ if (!ep)
+ ep = io->input.buf + io->input.len;
+ else if (*ep == '\n')
ep++;
len = ep - io->input.buf;
strbuf_add(sb, io->input.buf, len);
static int handle_cache(const char *path, unsigned char *sha1, const char *output)
{
- mmfile_t mmfile[3];
+ mmfile_t mmfile[3] = {{NULL}};
mmbuffer_t result = {NULL, 0};
struct cache_entry *ce;
int pos, len, i, hunk_no;
for (i = 0; i < 3; i++) {
enum object_type type;
unsigned long size;
+ int j;
- mmfile[i].size = 0;
- mmfile[i].ptr = NULL;
if (active_nr <= pos)
break;
ce = active_cache[pos++];
- if (ce_namelen(ce) != len || memcmp(ce->name, path, len)
- || ce_stage(ce) != i + 1)
- break;
- mmfile[i].ptr = read_sha1_file(ce->sha1, &type, &size);
- mmfile[i].size = size;
+ if (ce_namelen(ce) != len || memcmp(ce->name, path, len))
+ continue;
+ j = ce_stage(ce) - 1;
+ mmfile[j].ptr = read_sha1_file(ce->sha1, &type, &size);
+ mmfile[j].size = size;
}
for (i = 0; i < 3; i++) {
if (!mmfile[i].ptr && !mmfile[i].size)
*/
ll_merge(&result, path, &mmfile[0], NULL,
&mmfile[1], "ours",
- &mmfile[2], "theirs", 0);
+ &mmfile[2], "theirs", NULL);
for (i = 0; i < 3; i++)
free(mmfile[i].ptr);
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;
ret = 1;
goto out;
}
- ret = ll_merge(&result, path, &base, NULL, &cur, "", &other, "", 0);
+ ret = ll_merge(&result, path, &base, NULL, &cur, "", &other, "", NULL);
if (!ret) {
FILE *f;
continue;
hex = xstrdup(sha1_to_hex(sha1));
string_list_insert(rr, path)->util = hex;
- if (mkdir(git_path("rr-cache/%s", hex), 0755))
+ if (mkdir_in_gitdir(git_path("rr-cache/%s", hex)))
continue;
handle_file(path, NULL, rerere_path(hex, "preimage"));
fprintf(stderr, "Recorded preimage for '%s'\n", path);
if (has_rerere_resolution(name)) {
if (!merge(name, path)) {
- if (rerere_autoupdate)
+ const char *msg;
+ if (rerere_autoupdate) {
string_list_insert(&update, path);
- fprintf(stderr,
- "%s '%s' using previous resolution.\n",
- rerere_autoupdate
- ? "Staged" : "Resolved",
- path);
+ msg = "Staged '%s' using previous resolution.\n";
+ } else
+ msg = "Resolved '%s' using previous resolution.\n";
+ fprintf(stderr, msg, path);
goto mark_resolved;
}
}
if (rerere_enabled < 0)
return rr_cache_exists;
- if (!rr_cache_exists &&
- (mkdir(rr_cache, 0777) || adjust_shared_perm(rr_cache)))
+ if (!rr_cache_exists && mkdir_in_gitdir(rr_cache))
die("Could not create directory %s", rr_cache);
return 1;
}
}
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);
+ }
+ closedir(dir);
+ 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"));
+}