#include "ll-merge.h"
#include "attr.h"
#include "pathspec.h"
+#include "object-store.h"
#include "sha1-lookup.h"
#define RESOLVED 0
static void read_rr(struct string_list *rr)
{
struct strbuf buf = STRBUF_INIT;
- FILE *in = fopen_or_warn(git_path_merge_rr(), "r");
+ FILE *in = fopen_or_warn(git_path_merge_rr(the_repository), "r");
if (!in)
return;
/* There has to be the hash, tab, path and then NUL */
if (buf.len < 42 || get_sha1_hex(buf.buf, sha1))
- die("corrupt MERGE_RR");
+ die(_("corrupt MERGE_RR"));
if (buf.buf[40] != '.') {
variant = 0;
errno = 0;
variant = strtol(buf.buf + 41, &path, 10);
if (errno)
- die("corrupt MERGE_RR");
+ die(_("corrupt MERGE_RR"));
}
if (*(path++) != '\t')
- die("corrupt MERGE_RR");
+ die(_("corrupt MERGE_RR"));
buf.buf[40] = '\0';
id = new_rerere_id_hex(buf.buf);
id->variant = variant;
rr->items[i].string, 0);
if (write_in_full(out_fd, buf.buf, buf.len) < 0)
- die("unable to write rerere record");
+ die(_("unable to write rerere record"));
strbuf_release(&buf);
}
if (commit_lock_file(&write_lock) != 0)
- die("unable to write rerere record");
+ die(_("unable to write rerere record"));
return 0;
}
ferr_puts(str, io->output, &io->wrerror);
}
-/*
- * Write a conflict marker to io->output (if defined).
- */
-static void rerere_io_putconflict(int ch, int size, struct rerere_io *io)
-{
- char buf[64];
-
- while (size) {
- if (size <= sizeof(buf) - 2) {
- memset(buf, ch, size);
- buf[size] = '\n';
- buf[size + 1] = '\0';
- size = 0;
- } else {
- int sz = sizeof(buf) - 1;
-
- /*
- * Make sure we will not write everything out
- * in this round by leaving at least 1 byte
- * for the next round, giving the next round
- * a chance to add the terminating LF. Yuck.
- */
- if (size <= sz)
- sz -= (sz - size) + 1;
- memset(buf, ch, sz);
- buf[sz] = '\0';
- size -= sz;
- }
- rerere_io_putstr(buf, io);
- }
-}
-
static void rerere_io_putmem(const char *mem, size_t sz, struct rerere_io *io)
{
if (io->output)
return isspace(*buf);
}
-/*
- * Read contents a file with conflicts, normalize the conflicts
- * by (1) discarding the common ancestor version in diff3-style,
- * (2) reordering our side and their side so that whichever sorts
- * alphabetically earlier comes before the other one, while
- * computing the "conflict ID", which is just an SHA-1 hash of
- * one side of the conflict, NUL, the other side of the conflict,
- * and NUL concatenated together.
- *
- * Return the number of conflict hunks found.
- *
- * NEEDSWORK: the logic and theory of operation behind this conflict
- * normalization may deserve to be documented somewhere, perhaps in
- * Documentation/technical/rerere.txt.
- */
-static int handle_path(unsigned char *sha1, struct rerere_io *io, int marker_size)
+static void rerere_strbuf_putconflict(struct strbuf *buf, int ch, size_t size)
+{
+ strbuf_addchars(buf, ch, size);
+ strbuf_addch(buf, '\n');
+}
+
+static int handle_conflict(struct strbuf *out, struct rerere_io *io,
+ int marker_size, git_SHA_CTX *ctx)
{
- git_SHA_CTX ctx;
- int hunk_no = 0;
enum {
- RR_CONTEXT = 0, RR_SIDE_1, RR_SIDE_2, RR_ORIGINAL
- } hunk = RR_CONTEXT;
+ RR_SIDE_1 = 0, RR_SIDE_2, RR_ORIGINAL
+ } hunk = RR_SIDE_1;
struct strbuf one = STRBUF_INIT, two = STRBUF_INIT;
- struct strbuf buf = STRBUF_INIT;
-
- if (sha1)
- git_SHA1_Init(&ctx);
+ struct strbuf buf = STRBUF_INIT, conflict = STRBUF_INIT;
+ int has_conflicts = -1;
while (!io->getline(&buf, io)) {
if (is_cmarker(buf.buf, '<', marker_size)) {
- if (hunk != RR_CONTEXT)
- goto bad;
- hunk = RR_SIDE_1;
+ if (handle_conflict(&conflict, io, marker_size, NULL) < 0)
+ break;
+ if (hunk == RR_SIDE_1)
+ strbuf_addbuf(&one, &conflict);
+ else
+ strbuf_addbuf(&two, &conflict);
+ strbuf_release(&conflict);
} else if (is_cmarker(buf.buf, '|', marker_size)) {
if (hunk != RR_SIDE_1)
- goto bad;
+ break;
hunk = RR_ORIGINAL;
} else if (is_cmarker(buf.buf, '=', marker_size)) {
if (hunk != RR_SIDE_1 && hunk != RR_ORIGINAL)
- goto bad;
+ break;
hunk = RR_SIDE_2;
} else if (is_cmarker(buf.buf, '>', marker_size)) {
if (hunk != RR_SIDE_2)
- goto bad;
+ break;
if (strbuf_cmp(&one, &two) > 0)
strbuf_swap(&one, &two);
- hunk_no++;
- hunk = RR_CONTEXT;
- rerere_io_putconflict('<', marker_size, io);
- rerere_io_putmem(one.buf, one.len, io);
- rerere_io_putconflict('=', marker_size, io);
- rerere_io_putmem(two.buf, two.len, io);
- rerere_io_putconflict('>', marker_size, io);
- if (sha1) {
- git_SHA1_Update(&ctx, one.buf ? one.buf : "",
+ has_conflicts = 1;
+ rerere_strbuf_putconflict(out, '<', marker_size);
+ strbuf_addbuf(out, &one);
+ rerere_strbuf_putconflict(out, '=', marker_size);
+ strbuf_addbuf(out, &two);
+ rerere_strbuf_putconflict(out, '>', marker_size);
+ if (ctx) {
+ git_SHA1_Update(ctx, one.buf ? one.buf : "",
one.len + 1);
- git_SHA1_Update(&ctx, two.buf ? two.buf : "",
+ git_SHA1_Update(ctx, two.buf ? two.buf : "",
two.len + 1);
}
- strbuf_reset(&one);
- strbuf_reset(&two);
+ break;
} else if (hunk == RR_SIDE_1)
strbuf_addbuf(&one, &buf);
else if (hunk == RR_ORIGINAL)
; /* discard */
else if (hunk == RR_SIDE_2)
strbuf_addbuf(&two, &buf);
- else
- rerere_io_putstr(buf.buf, io);
- continue;
- bad:
- hunk = 99; /* force error exit */
- break;
}
strbuf_release(&one);
strbuf_release(&two);
strbuf_release(&buf);
+ return has_conflicts;
+}
+
+/*
+ * Read contents a file with conflicts, normalize the conflicts
+ * by (1) discarding the common ancestor version in diff3-style,
+ * (2) reordering our side and their side so that whichever sorts
+ * alphabetically earlier comes before the other one, while
+ * computing the "conflict ID", which is just an SHA-1 hash of
+ * one side of the conflict, NUL, the other side of the conflict,
+ * and NUL concatenated together.
+ *
+ * Return 1 if conflict hunks are found, 0 if there are no conflict
+ * hunks and -1 if an error occured.
+ */
+static int handle_path(unsigned char *sha1, struct rerere_io *io, int marker_size)
+{
+ git_SHA_CTX ctx;
+ struct strbuf buf = STRBUF_INIT, out = STRBUF_INIT;
+ int has_conflicts = 0;
+ if (sha1)
+ git_SHA1_Init(&ctx);
+
+ while (!io->getline(&buf, io)) {
+ if (is_cmarker(buf.buf, '<', marker_size)) {
+ has_conflicts = handle_conflict(&out, io, marker_size,
+ sha1 ? &ctx : NULL);
+ if (has_conflicts < 0)
+ break;
+ rerere_io_putmem(out.buf, out.len, io);
+ strbuf_reset(&out);
+ } else
+ rerere_io_putstr(buf.buf, io);
+ }
+ strbuf_release(&buf);
+ strbuf_release(&out);
+
if (sha1)
git_SHA1_Final(sha1, &ctx);
- if (hunk != RR_CONTEXT)
- return -1;
- return hunk_no;
+
+ return has_conflicts;
}
/*
*/
static int handle_file(const char *path, unsigned char *sha1, const char *output)
{
- int hunk_no = 0;
+ int has_conflicts = 0;
struct rerere_io_file io;
int marker_size = ll_merge_marker_size(path);
io.input = fopen(path, "r");
io.io.wrerror = 0;
if (!io.input)
- return error_errno("Could not open %s", path);
+ return error_errno(_("could not open '%s'"), path);
if (output) {
io.io.output = fopen(output, "w");
if (!io.io.output) {
- error_errno("Could not write %s", output);
+ error_errno(_("could not write '%s'"), output);
fclose(io.input);
return -1;
}
}
- hunk_no = handle_path(sha1, (struct rerere_io *)&io, marker_size);
+ has_conflicts = handle_path(sha1, (struct rerere_io *)&io, marker_size);
fclose(io.input);
if (io.io.wrerror)
- error("There were errors while writing %s (%s)",
+ error(_("there were errors while writing '%s' (%s)"),
path, strerror(io.io.wrerror));
if (io.io.output && fclose(io.io.output))
- io.io.wrerror = error_errno("Failed to flush %s", path);
+ io.io.wrerror = error_errno(_("failed to flush '%s'"), path);
- if (hunk_no < 0) {
+ if (has_conflicts < 0) {
if (output)
unlink_or_warn(output);
- return error("Could not parse conflict hunks in %s", path);
+ return error(_("could not parse conflict hunks in '%s'"), path);
}
if (io.io.wrerror)
return -1;
- return hunk_no;
+ return has_conflicts;
}
/*
}
*type = PUNTED;
- while (ce_stage(active_cache[i]) == 1)
+ while (i < active_nr && ce_stage(active_cache[i]) == 1)
i++;
/* Only handle regular files with both stages #2 and #3 */
{
int i;
if (read_cache() < 0)
- return error("Could not read index");
+ return error(_("index file corrupt"));
for (i = 0; i < active_nr;) {
int conflict_type;
if (setup_rerere(merge_rr, RERERE_READONLY))
return 0;
if (read_cache() < 0)
- return error("Could not read index");
+ return error(_("index file corrupt"));
for (i = 0; i < active_nr;) {
int conflict_type;
* Mark that "postimage" was used to help gc.
*/
if (utime(rerere_path(id, "postimage"), NULL) < 0)
- warning_errno("failed utime() on %s",
+ warning_errno(_("failed utime() on '%s'"),
rerere_path(id, "postimage"));
/* Update "path" with the resolution */
f = fopen(path, "w");
if (!f)
- return error_errno("Could not open %s", path);
+ return error_errno(_("could not open '%s'"), path);
if (fwrite(result.ptr, result.size, 1, f) != 1)
- error_errno("Could not write %s", path);
+ error_errno(_("could not write '%s'"), path);
if (fclose(f))
- return error_errno("Writing %s failed", path);
+ return error_errno(_("writing '%s' failed"), path);
out:
free(cur.ptr);
return ret;
}
-static struct lock_file index_lock;
-
static void update_paths(struct string_list *update)
{
+ struct lock_file index_lock = LOCK_INIT;
int i;
hold_locked_index(&index_lock, LOCK_DIE_ON_ERROR);
struct string_list_item *item = &update->items[i];
if (add_file_to_cache(item->string, 0))
exit(128);
- fprintf(stderr, "Staged '%s' using previous resolution.\n",
+ fprintf_ln(stderr, _("Staged '%s' using previous resolution."),
item->string);
}
if (write_locked_index(&the_index, &index_lock,
COMMIT_LOCK | SKIP_IF_UNCHANGED))
- die("Unable to write new index file");
+ die(_("unable to write new index file"));
}
static void remove_variant(struct rerere_id *id)
if (!handle_file(path, NULL, NULL)) {
copy_file(rerere_path(id, "postimage"), path, 0666);
id->collection->status[variant] |= RR_HAS_POSTIMAGE;
- fprintf(stderr, "Recorded resolution for '%s'.\n", path);
+ fprintf_ln(stderr, _("Recorded resolution for '%s'."), path);
free_rerere_id(rr_item);
rr_item->util = NULL;
return;
if (rerere_autoupdate)
string_list_insert(update, path);
else
- fprintf(stderr,
- "Resolved '%s' using previous resolution.\n",
- path);
+ fprintf_ln(stderr,
+ _("Resolved '%s' using previous resolution."),
+ path);
free_rerere_id(rr_item);
rr_item->util = NULL;
return;
if (id->collection->status[variant] & RR_HAS_POSTIMAGE) {
const char *path = rerere_path(id, "postimage");
if (unlink(path))
- die_errno("cannot unlink stray '%s'", path);
+ die_errno(_("cannot unlink stray '%s'"), path);
id->collection->status[variant] &= ~RR_HAS_POSTIMAGE;
}
id->collection->status[variant] |= RR_HAS_PREIMAGE;
- fprintf(stderr, "Recorded preimage for '%s'\n", path);
+ fprintf_ln(stderr, _("Recorded preimage for '%s'"), path);
}
static int do_plain_rerere(struct string_list *rr, int fd)
const char *path = conflict.items[i].string;
int ret;
- if (string_list_has_string(rr, path))
- continue;
-
/*
* Ask handle_file() to scan and assign a
* conflict ID. No need to write anything out
* yet.
*/
ret = handle_file(path, sha1, NULL);
+ if (ret != 0 && string_list_has_string(rr, path)) {
+ remove_variant(string_list_lookup(rr, path)->util);
+ string_list_remove(rr, path, 1);
+ }
if (ret < 1)
continue;
return rr_cache_exists;
if (!rr_cache_exists && mkdir_in_gitdir(git_path_rr_cache()))
- die("Could not create directory %s", git_path_rr_cache());
+ die(_("could not create directory '%s'"), git_path_rr_cache());
return 1;
}
if (flags & RERERE_READONLY)
fd = 0;
else
- fd = hold_lock_file_for_update(&write_lock, git_path_merge_rr(),
+ fd = hold_lock_file_for_update(&write_lock,
+ git_path_merge_rr(the_repository),
LOCK_DIE_ON_ERROR);
read_rr(merge_rr);
return fd;
mmfile_t mmfile[3] = {{NULL}};
mmbuffer_t result = {NULL, 0};
const struct cache_entry *ce;
- int pos, len, i, hunk_no;
+ int pos, len, i, has_conflicts;
struct rerere_io_mem io;
int marker_size = ll_merge_marker_size(path);
break;
i = ce_stage(ce) - 1;
if (!mmfile[i].ptr) {
- mmfile[i].ptr = read_sha1_file(ce->oid.hash, &type,
- &size);
+ mmfile[i].ptr = read_object_file(&ce->oid, &type,
+ &size);
mmfile[i].size = size;
}
}
* Grab the conflict ID and optionally write the original
* contents with conflict markers out.
*/
- hunk_no = handle_path(sha1, (struct rerere_io *)&io, marker_size);
+ has_conflicts = handle_path(sha1, (struct rerere_io *)&io, marker_size);
strbuf_release(&io.input);
if (io.io.output)
fclose(io.io.output);
- return hunk_no;
+ return has_conflicts;
}
static int rerere_forget_one_path(const char *path, struct string_list *rr)
*/
ret = handle_cache(path, sha1, NULL);
if (ret < 1)
- return error("Could not parse conflict hunks in '%s'", path);
+ return error(_("could not parse conflict hunks in '%s'"), path);
/* Nuke the recorded resolution for the conflict */
id = new_rerere_id(sha1);
handle_cache(path, sha1, rerere_path(id, "thisimage"));
if (read_mmfile(&cur, rerere_path(id, "thisimage"))) {
free(cur.ptr);
- error("Failed to update conflicted state in '%s'", path);
+ error(_("failed to update conflicted state in '%s'"), path);
goto fail_exit;
}
cleanly_resolved = !try_merge(id, path, &cur, &result);
}
if (id->collection->status_nr <= id->variant) {
- error("no remembered resolution for '%s'", path);
+ error(_("no remembered resolution for '%s'"), path);
goto fail_exit;
}
filename = rerere_path(id, "postimage");
if (unlink(filename)) {
if (errno == ENOENT)
- error("no remembered resolution for %s", path);
+ error(_("no remembered resolution for '%s'"), path);
else
- error_errno("cannot unlink %s", filename);
+ error_errno(_("cannot unlink '%s'"), filename);
goto fail_exit;
}
* the postimage.
*/
handle_cache(path, sha1, rerere_path(id, "preimage"));
- fprintf(stderr, "Updated preimage for '%s'\n", path);
+ fprintf_ln(stderr, _("Updated preimage for '%s'"), path);
/*
* And remember that we can record resolution for this
item = string_list_insert(rr, path);
free_rerere_id(item);
item->util = id;
- fprintf(stderr, "Forgot resolution for %s\n", path);
+ fprintf(stderr, _("Forgot resolution for '%s'\n"), path);
return 0;
fail_exit:
struct string_list merge_rr = STRING_LIST_INIT_DUP;
if (read_cache() < 0)
- return error("Could not read index");
+ return error(_("index file corrupt"));
fd = setup_rerere(&merge_rr, RERERE_NOAUTOUPDATE);
if (fd < 0)
find_conflict(&conflict);
for (i = 0; i < conflict.nr; i++) {
struct string_list_item *it = &conflict.items[i];
- if (!match_pathspec(pathspec, it->string,
+ if (!match_pathspec(&the_index, pathspec, it->string,
strlen(it->string), 0, NULL, 0))
continue;
rerere_forget_one_path(it->string, &merge_rr);
git_config(git_default_config, NULL);
dir = opendir(git_path("rr-cache"));
if (!dir)
- die_errno("unable to open rr-cache directory");
+ die_errno(_("unable to open rr-cache directory"));
/* Collect stale conflict IDs ... */
while ((e = readdir(dir))) {
struct rerere_dir *rr_dir;
rmdir(rerere_path(id, NULL));
}
}
- unlink_or_warn(git_path_merge_rr());
+ unlink_or_warn(git_path_merge_rr(the_repository));
rollback_lock_file(&write_lock);
}
git commit -q -a -m "prefer first over second" &&
test -f $rr/postimage &&
- oldmtimepost=$(test-chmtime -v -60 $rr/postimage | cut -f 1) &&
+ oldmtimepost=$(test-tool chmtime --get -60 $rr/postimage) &&
git checkout -b third master &&
git show second^:a1 | sed "s/To die: t/To die! T/" >a1 &&
'
test_expect_success 'rerere updates postimage timestamp' '
- newmtimepost=$(test-chmtime -v +0 $rr/postimage | cut -f 1) &&
+ newmtimepost=$(test-tool chmtime --get $rr/postimage) &&
test $oldmtimepost -lt $newmtimepost
'
almost_60_days_ago=$((60-60*86400)) &&
just_over_60_days_ago=$((-1-60*86400)) &&
- test-chmtime =$just_over_60_days_ago $rr/preimage &&
- test-chmtime =$almost_60_days_ago $rr/postimage &&
- test-chmtime =$almost_15_days_ago $rr2/preimage
+ test-tool chmtime =$just_over_60_days_ago $rr/preimage &&
+ test-tool chmtime =$almost_60_days_ago $rr/postimage &&
+ test-tool chmtime =$almost_15_days_ago $rr2/preimage
'
test_expect_success 'gc preserves young or recently used records' '
'
test_expect_success 'old records rest in peace' '
- test-chmtime =$just_over_60_days_ago $rr/postimage &&
- test-chmtime =$just_over_15_days_ago $rr2/preimage &&
+ test-tool chmtime =$just_over_60_days_ago $rr/postimage &&
+ test-tool chmtime =$just_over_15_days_ago $rr2/preimage &&
git rerere gc &&
! test -f $rr/preimage &&
! test -f $rr2/preimage
five_days="$1" right_now="$2"
test_expect_success "rerere gc with custom expiry ($five_days, $right_now)" '
rm -fr .git/rr-cache &&
- rr=.git/rr-cache/$_z40 &&
+ rr=.git/rr-cache/$ZERO_OID &&
mkdir -p "$rr" &&
>"$rr/preimage" &&
>"$rr/postimage" &&
two_days_ago=$((-2*86400)) &&
- test-chmtime =$two_days_ago "$rr/preimage" &&
- test-chmtime =$two_days_ago "$rr/postimage" &&
+ test-tool chmtime =$two_days_ago "$rr/preimage" &&
+ test-tool chmtime =$two_days_ago "$rr/postimage" &&
find .git/rr-cache -type f | sort >original &&
git -c "gc.rerereresolved=$right_now" \
-c "gc.rerereunresolved=$right_now" rerere gc &&
find .git/rr-cache -type f | sort >actual &&
- >expect &&
- test_cmp expect actual
+ test_must_be_empty actual
'
}
count_pre_post 2 0 &&
# Pretend that the conflicts were made quite some time ago
- find .git/rr-cache/ -type f | xargs test-chmtime -172800 &&
+ test-tool chmtime -172800 $(find .git/rr-cache/ -type f) &&
# Unresolved entries have not expired yet
git -c gc.rerereresolved=5 -c gc.rerereunresolved=5 rerere gc &&
# We resolved file1 and file2
git rerere &&
- >expect &&
git rerere remaining >actual &&
- test_cmp expect actual &&
+ test_must_be_empty actual &&
# We must have recorded both of them
count_pre_post 2 2 &&
test_must_fail git merge six.1 &&
git rerere &&
- >expect &&
git rerere remaining >actual &&
- test_cmp expect actual &&
+ test_must_be_empty actual &&
concat_insert short 6.1 6.2 >file1.expect &&
concat_insert long 6.1 6.2 >file2.expect &&
git rerere &&
# Pretend that the resolutions are old again
- find .git/rr-cache/ -type f | xargs test-chmtime -172800 &&
+ test-tool chmtime -172800 $(find .git/rr-cache/ -type f) &&
# Resolved entries have not expired yet
git -c gc.rerereresolved=5 -c gc.rerereunresolved=5 rerere gc &&
count_pre_post 0 0
'
+test_expect_success 'rerere with unexpected conflict markers does not crash' '
+ git reset --hard &&
+
+ git checkout -b branch-1 master &&
+ echo "bar" >test &&
+ git add test &&
+ git commit -q -m two &&
+
+ git reset --hard &&
+ git checkout -b branch-2 master &&
+ echo "foo" >test &&
+ git add test &&
+ git commit -q -a -m one &&
+
+ test_must_fail git merge branch-1 &&
+ echo "<<<<<<< a" >test &&
+ git rerere &&
+
+ git rerere clear
+'
+
+test_expect_success 'rerere with inner conflict markers' '
+ git reset --hard &&
+
+ git checkout -b A master &&
+ echo "bar" >test &&
+ git add test &&
+ git commit -q -m two &&
+ echo "baz" >test &&
+ git add test &&
+ git commit -q -m three &&
+
+ git reset --hard &&
+ git checkout -b B master &&
+ echo "foo" >test &&
+ git add test &&
+ git commit -q -a -m one &&
+
+ test_must_fail git merge A~ &&
+ git add test &&
+ git commit -q -m "will solve conflicts later" &&
+ test_must_fail git merge A &&
+
+ echo "resolved" >test &&
+ git add test &&
+ git commit -q -m "solved conflict" &&
+
+ echo "resolved" >expect &&
+
+ git reset --hard HEAD~~ &&
+ test_must_fail git merge A~ &&
+ git add test &&
+ git commit -q -m "will solve conflicts later" &&
+ test_must_fail git merge A &&
+ cat test >actual &&
+ test_cmp expect actual &&
+
+ git add test &&
+ git commit -m "rerere solved conflict" &&
+ git reset --hard HEAD~ &&
+ test_must_fail git merge A &&
+ cat test >actual &&
+ test_cmp expect actual
+'
+
+ test_expect_success 'setup simple stage 1 handling' '
+ test_create_repo stage_1_handling &&
+ (
+ cd stage_1_handling &&
+
+ test_seq 1 10 >original &&
+ git add original &&
+ git commit -m original &&
+
+ git checkout -b A master &&
+ git mv original A &&
+ git commit -m "rename to A" &&
+
+ git checkout -b B master &&
+ git mv original B &&
+ git commit -m "rename to B"
+ )
+ '
+
+ test_expect_success 'test simple stage 1 handling' '
+ (
+ cd stage_1_handling &&
+
+ git config rerere.enabled true &&
+ git checkout A^0 &&
+ test_must_fail git merge B^0
+ )
+ '
+
test_done