mirror of
https://github.com/git/git.git
synced 2024-11-28 04:23:30 +08:00
b315c5c081
For that purpose, the ->buf is always initialized with a char * buf living
in the strbuf module. It is made a char * so that we can sloppily accept
things that perform: sb->buf[0] = '\0', and because you can't pass "" as an
initializer for ->buf without making gcc unhappy for very good reasons.
strbuf_init/_detach/_grow have been fixed to trust ->alloc and not ->buf
anymore.
as a consequence strbuf_detach is _mandatory_ to detach a buffer, copying
->buf isn't an option anymore, if ->buf is going to escape from the scope,
and eventually be free'd.
API changes:
* strbuf_setlen now always works, so just make strbuf_reset a convenience
macro.
* strbuf_detatch takes a size_t* optional argument (meaning it can be
NULL) to copy the buffer's len, as it was needed for this refactor to
make the code more readable, and working like the callers.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
571 lines
13 KiB
C
571 lines
13 KiB
C
#include "builtin.h"
|
|
#include "cache.h"
|
|
#include "refs.h"
|
|
#include "commit.h"
|
|
|
|
static char *get_stdin(void)
|
|
{
|
|
struct strbuf buf;
|
|
strbuf_init(&buf, 0);
|
|
if (strbuf_read(&buf, 0, 1024) < 0) {
|
|
die("error reading standard input: %s", strerror(errno));
|
|
}
|
|
return strbuf_detach(&buf, NULL);
|
|
}
|
|
|
|
static void show_new(enum object_type type, unsigned char *sha1_new)
|
|
{
|
|
fprintf(stderr, " %s: %s\n", typename(type),
|
|
find_unique_abbrev(sha1_new, DEFAULT_ABBREV));
|
|
}
|
|
|
|
static int update_ref_env(const char *action,
|
|
const char *refname,
|
|
unsigned char *sha1,
|
|
unsigned char *oldval)
|
|
{
|
|
char msg[1024];
|
|
char *rla = getenv("GIT_REFLOG_ACTION");
|
|
|
|
if (!rla)
|
|
rla = "(reflog update)";
|
|
if (snprintf(msg, sizeof(msg), "%s: %s", rla, action) >= sizeof(msg))
|
|
warning("reflog message too long: %.*s...", 50, msg);
|
|
return update_ref(msg, refname, sha1, oldval, 0, QUIET_ON_ERR);
|
|
}
|
|
|
|
static int update_local_ref(const char *name,
|
|
const char *new_head,
|
|
const char *note,
|
|
int verbose, int force)
|
|
{
|
|
unsigned char sha1_old[20], sha1_new[20];
|
|
char oldh[41], newh[41];
|
|
struct commit *current, *updated;
|
|
enum object_type type;
|
|
|
|
if (get_sha1_hex(new_head, sha1_new))
|
|
die("malformed object name %s", new_head);
|
|
|
|
type = sha1_object_info(sha1_new, NULL);
|
|
if (type < 0)
|
|
die("object %s not found", new_head);
|
|
|
|
if (!*name) {
|
|
/* Not storing */
|
|
if (verbose) {
|
|
fprintf(stderr, "* fetched %s\n", note);
|
|
show_new(type, sha1_new);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (get_sha1(name, sha1_old)) {
|
|
char *msg;
|
|
just_store:
|
|
/* new ref */
|
|
if (!strncmp(name, "refs/tags/", 10))
|
|
msg = "storing tag";
|
|
else
|
|
msg = "storing head";
|
|
fprintf(stderr, "* %s: storing %s\n",
|
|
name, note);
|
|
show_new(type, sha1_new);
|
|
return update_ref_env(msg, name, sha1_new, NULL);
|
|
}
|
|
|
|
if (!hashcmp(sha1_old, sha1_new)) {
|
|
if (verbose) {
|
|
fprintf(stderr, "* %s: same as %s\n", name, note);
|
|
show_new(type, sha1_new);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (!strncmp(name, "refs/tags/", 10)) {
|
|
fprintf(stderr, "* %s: updating with %s\n", name, note);
|
|
show_new(type, sha1_new);
|
|
return update_ref_env("updating tag", name, sha1_new, NULL);
|
|
}
|
|
|
|
current = lookup_commit_reference(sha1_old);
|
|
updated = lookup_commit_reference(sha1_new);
|
|
if (!current || !updated)
|
|
goto just_store;
|
|
|
|
strcpy(oldh, find_unique_abbrev(current->object.sha1, DEFAULT_ABBREV));
|
|
strcpy(newh, find_unique_abbrev(sha1_new, DEFAULT_ABBREV));
|
|
|
|
if (in_merge_bases(current, &updated, 1)) {
|
|
fprintf(stderr, "* %s: fast forward to %s\n",
|
|
name, note);
|
|
fprintf(stderr, " old..new: %s..%s\n", oldh, newh);
|
|
return update_ref_env("fast forward", name, sha1_new, sha1_old);
|
|
}
|
|
if (!force) {
|
|
fprintf(stderr,
|
|
"* %s: not updating to non-fast forward %s\n",
|
|
name, note);
|
|
fprintf(stderr,
|
|
" old...new: %s...%s\n", oldh, newh);
|
|
return 1;
|
|
}
|
|
fprintf(stderr,
|
|
"* %s: forcing update to non-fast forward %s\n",
|
|
name, note);
|
|
fprintf(stderr, " old...new: %s...%s\n", oldh, newh);
|
|
return update_ref_env("forced-update", name, sha1_new, sha1_old);
|
|
}
|
|
|
|
static int append_fetch_head(FILE *fp,
|
|
const char *head, const char *remote,
|
|
const char *remote_name, const char *remote_nick,
|
|
const char *local_name, int not_for_merge,
|
|
int verbose, int force)
|
|
{
|
|
struct commit *commit;
|
|
int remote_len, i, note_len;
|
|
unsigned char sha1[20];
|
|
char note[1024];
|
|
const char *what, *kind;
|
|
|
|
if (get_sha1(head, sha1))
|
|
return error("Not a valid object name: %s", head);
|
|
commit = lookup_commit_reference(sha1);
|
|
if (!commit)
|
|
not_for_merge = 1;
|
|
|
|
if (!strcmp(remote_name, "HEAD")) {
|
|
kind = "";
|
|
what = "";
|
|
}
|
|
else if (!strncmp(remote_name, "refs/heads/", 11)) {
|
|
kind = "branch";
|
|
what = remote_name + 11;
|
|
}
|
|
else if (!strncmp(remote_name, "refs/tags/", 10)) {
|
|
kind = "tag";
|
|
what = remote_name + 10;
|
|
}
|
|
else if (!strncmp(remote_name, "refs/remotes/", 13)) {
|
|
kind = "remote branch";
|
|
what = remote_name + 13;
|
|
}
|
|
else {
|
|
kind = "";
|
|
what = remote_name;
|
|
}
|
|
|
|
remote_len = strlen(remote);
|
|
for (i = remote_len - 1; remote[i] == '/' && 0 <= i; i--)
|
|
;
|
|
remote_len = i + 1;
|
|
if (4 < i && !strncmp(".git", remote + i - 3, 4))
|
|
remote_len = i - 3;
|
|
|
|
note_len = 0;
|
|
if (*what) {
|
|
if (*kind)
|
|
note_len += sprintf(note + note_len, "%s ", kind);
|
|
note_len += sprintf(note + note_len, "'%s' of ", what);
|
|
}
|
|
note_len += sprintf(note + note_len, "%.*s", remote_len, remote);
|
|
fprintf(fp, "%s\t%s\t%s\n",
|
|
sha1_to_hex(commit ? commit->object.sha1 : sha1),
|
|
not_for_merge ? "not-for-merge" : "",
|
|
note);
|
|
return update_local_ref(local_name, head, note, verbose, force);
|
|
}
|
|
|
|
static char *keep;
|
|
static void remove_keep(void)
|
|
{
|
|
if (keep && *keep)
|
|
unlink(keep);
|
|
}
|
|
|
|
static void remove_keep_on_signal(int signo)
|
|
{
|
|
remove_keep();
|
|
signal(SIGINT, SIG_DFL);
|
|
raise(signo);
|
|
}
|
|
|
|
static char *find_local_name(const char *remote_name, const char *refs,
|
|
int *force_p, int *not_for_merge_p)
|
|
{
|
|
const char *ref = refs;
|
|
int len = strlen(remote_name);
|
|
|
|
while (ref) {
|
|
const char *next;
|
|
int single_force, not_for_merge;
|
|
|
|
while (*ref == '\n')
|
|
ref++;
|
|
if (!*ref)
|
|
break;
|
|
next = strchr(ref, '\n');
|
|
|
|
single_force = not_for_merge = 0;
|
|
if (*ref == '+') {
|
|
single_force = 1;
|
|
ref++;
|
|
}
|
|
if (*ref == '.') {
|
|
not_for_merge = 1;
|
|
ref++;
|
|
if (*ref == '+') {
|
|
single_force = 1;
|
|
ref++;
|
|
}
|
|
}
|
|
if (!strncmp(remote_name, ref, len) && ref[len] == ':') {
|
|
const char *local_part = ref + len + 1;
|
|
int retlen;
|
|
|
|
if (!next)
|
|
retlen = strlen(local_part);
|
|
else
|
|
retlen = next - local_part;
|
|
*force_p = single_force;
|
|
*not_for_merge_p = not_for_merge;
|
|
return xmemdupz(local_part, retlen);
|
|
}
|
|
ref = next;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static int fetch_native_store(FILE *fp,
|
|
const char *remote,
|
|
const char *remote_nick,
|
|
const char *refs,
|
|
int verbose, int force)
|
|
{
|
|
char buffer[1024];
|
|
int err = 0;
|
|
|
|
signal(SIGINT, remove_keep_on_signal);
|
|
atexit(remove_keep);
|
|
|
|
while (fgets(buffer, sizeof(buffer), stdin)) {
|
|
int len;
|
|
char *cp;
|
|
char *local_name;
|
|
int single_force, not_for_merge;
|
|
|
|
for (cp = buffer; *cp && !isspace(*cp); cp++)
|
|
;
|
|
if (*cp)
|
|
*cp++ = 0;
|
|
len = strlen(cp);
|
|
if (len && cp[len-1] == '\n')
|
|
cp[--len] = 0;
|
|
if (!strcmp(buffer, "failed"))
|
|
die("Fetch failure: %s", remote);
|
|
if (!strcmp(buffer, "pack"))
|
|
continue;
|
|
if (!strcmp(buffer, "keep")) {
|
|
char *od = get_object_directory();
|
|
int len = strlen(od) + strlen(cp) + 50;
|
|
keep = xmalloc(len);
|
|
sprintf(keep, "%s/pack/pack-%s.keep", od, cp);
|
|
continue;
|
|
}
|
|
|
|
local_name = find_local_name(cp, refs,
|
|
&single_force, ¬_for_merge);
|
|
if (!local_name)
|
|
continue;
|
|
err |= append_fetch_head(fp,
|
|
buffer, remote, cp, remote_nick,
|
|
local_name, not_for_merge,
|
|
verbose, force || single_force);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
static int parse_reflist(const char *reflist)
|
|
{
|
|
const char *ref;
|
|
|
|
printf("refs='");
|
|
for (ref = reflist; ref; ) {
|
|
const char *next;
|
|
while (*ref && isspace(*ref))
|
|
ref++;
|
|
if (!*ref)
|
|
break;
|
|
for (next = ref; *next && !isspace(*next); next++)
|
|
;
|
|
printf("\n%.*s", (int)(next - ref), ref);
|
|
ref = next;
|
|
}
|
|
printf("'\n");
|
|
|
|
printf("rref='");
|
|
for (ref = reflist; ref; ) {
|
|
const char *next, *colon;
|
|
while (*ref && isspace(*ref))
|
|
ref++;
|
|
if (!*ref)
|
|
break;
|
|
for (next = ref; *next && !isspace(*next); next++)
|
|
;
|
|
if (*ref == '.')
|
|
ref++;
|
|
if (*ref == '+')
|
|
ref++;
|
|
colon = strchr(ref, ':');
|
|
putchar('\n');
|
|
printf("%.*s", (int)((colon ? colon : next) - ref), ref);
|
|
ref = next;
|
|
}
|
|
printf("'\n");
|
|
return 0;
|
|
}
|
|
|
|
static int expand_refs_wildcard(const char *ls_remote_result, int numrefs,
|
|
const char **refs)
|
|
{
|
|
int i, matchlen, replacelen;
|
|
int found_one = 0;
|
|
const char *remote = *refs++;
|
|
numrefs--;
|
|
|
|
if (numrefs == 0) {
|
|
fprintf(stderr, "Nothing specified for fetching with remote.%s.fetch\n",
|
|
remote);
|
|
printf("empty\n");
|
|
}
|
|
|
|
for (i = 0; i < numrefs; i++) {
|
|
const char *ref = refs[i];
|
|
const char *lref = ref;
|
|
const char *colon;
|
|
const char *tail;
|
|
const char *ls;
|
|
const char *next;
|
|
|
|
if (*lref == '+')
|
|
lref++;
|
|
colon = strchr(lref, ':');
|
|
tail = lref + strlen(lref);
|
|
if (!(colon &&
|
|
2 < colon - lref &&
|
|
colon[-1] == '*' &&
|
|
colon[-2] == '/' &&
|
|
2 < tail - (colon + 1) &&
|
|
tail[-1] == '*' &&
|
|
tail[-2] == '/')) {
|
|
/* not a glob */
|
|
if (!found_one++)
|
|
printf("explicit\n");
|
|
printf("%s\n", ref);
|
|
continue;
|
|
}
|
|
|
|
/* glob */
|
|
if (!found_one++)
|
|
printf("glob\n");
|
|
|
|
/* lref to colon-2 is remote hierarchy name;
|
|
* colon+1 to tail-2 is local.
|
|
*/
|
|
matchlen = (colon-1) - lref;
|
|
replacelen = (tail-1) - (colon+1);
|
|
for (ls = ls_remote_result; ls; ls = next) {
|
|
const char *eol;
|
|
unsigned char sha1[20];
|
|
int namelen;
|
|
|
|
while (*ls && isspace(*ls))
|
|
ls++;
|
|
next = strchr(ls, '\n');
|
|
eol = !next ? (ls + strlen(ls)) : next;
|
|
if (!memcmp("^{}", eol-3, 3))
|
|
continue;
|
|
if (eol - ls < 40)
|
|
continue;
|
|
if (get_sha1_hex(ls, sha1))
|
|
continue;
|
|
ls += 40;
|
|
while (ls < eol && isspace(*ls))
|
|
ls++;
|
|
/* ls to next (or eol) is the name.
|
|
* is it identical to lref to colon-2?
|
|
*/
|
|
if ((eol - ls) <= matchlen ||
|
|
strncmp(ls, lref, matchlen))
|
|
continue;
|
|
|
|
/* Yes, it is a match */
|
|
namelen = eol - ls;
|
|
if (lref != ref)
|
|
putchar('+');
|
|
printf("%.*s:%.*s%.*s\n",
|
|
namelen, ls,
|
|
replacelen, colon + 1,
|
|
namelen - matchlen, ls + matchlen);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int pick_rref(int sha1_only, const char *rref, const char *ls_remote_result)
|
|
{
|
|
int err = 0;
|
|
int lrr_count = lrr_count, i, pass;
|
|
const char *cp;
|
|
struct lrr {
|
|
const char *line;
|
|
const char *name;
|
|
int namelen;
|
|
int shown;
|
|
} *lrr_list = lrr_list;
|
|
|
|
for (pass = 0; pass < 2; pass++) {
|
|
/* pass 0 counts and allocates, pass 1 fills... */
|
|
cp = ls_remote_result;
|
|
i = 0;
|
|
while (1) {
|
|
const char *np;
|
|
while (*cp && isspace(*cp))
|
|
cp++;
|
|
if (!*cp)
|
|
break;
|
|
np = strchr(cp, '\n');
|
|
if (!np)
|
|
np = cp + strlen(cp);
|
|
if (pass) {
|
|
lrr_list[i].line = cp;
|
|
lrr_list[i].name = cp + 41;
|
|
lrr_list[i].namelen = np - (cp + 41);
|
|
}
|
|
i++;
|
|
cp = np;
|
|
}
|
|
if (!pass) {
|
|
lrr_count = i;
|
|
lrr_list = xcalloc(lrr_count, sizeof(*lrr_list));
|
|
}
|
|
}
|
|
|
|
while (1) {
|
|
const char *next;
|
|
int rreflen;
|
|
int i;
|
|
|
|
while (*rref && isspace(*rref))
|
|
rref++;
|
|
if (!*rref)
|
|
break;
|
|
next = strchr(rref, '\n');
|
|
if (!next)
|
|
next = rref + strlen(rref);
|
|
rreflen = next - rref;
|
|
|
|
for (i = 0; i < lrr_count; i++) {
|
|
struct lrr *lrr = &(lrr_list[i]);
|
|
|
|
if (rreflen == lrr->namelen &&
|
|
!memcmp(lrr->name, rref, rreflen)) {
|
|
if (!lrr->shown)
|
|
printf("%.*s\n",
|
|
sha1_only ? 40 : lrr->namelen + 41,
|
|
lrr->line);
|
|
lrr->shown = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (lrr_count <= i) {
|
|
error("pick-rref: %.*s not found", rreflen, rref);
|
|
err = 1;
|
|
}
|
|
rref = next;
|
|
}
|
|
free(lrr_list);
|
|
return err;
|
|
}
|
|
|
|
int cmd_fetch__tool(int argc, const char **argv, const char *prefix)
|
|
{
|
|
int verbose = 0;
|
|
int force = 0;
|
|
int sopt = 0;
|
|
|
|
while (1 < argc) {
|
|
const char *arg = argv[1];
|
|
if (!strcmp("-v", arg))
|
|
verbose = 1;
|
|
else if (!strcmp("-f", arg))
|
|
force = 1;
|
|
else if (!strcmp("-s", arg))
|
|
sopt = 1;
|
|
else
|
|
break;
|
|
argc--;
|
|
argv++;
|
|
}
|
|
|
|
if (argc <= 1)
|
|
return error("Missing subcommand");
|
|
|
|
if (!strcmp("append-fetch-head", argv[1])) {
|
|
int result;
|
|
FILE *fp;
|
|
|
|
if (argc != 8)
|
|
return error("append-fetch-head takes 6 args");
|
|
fp = fopen(git_path("FETCH_HEAD"), "a");
|
|
result = append_fetch_head(fp, argv[2], argv[3],
|
|
argv[4], argv[5],
|
|
argv[6], !!argv[7][0],
|
|
verbose, force);
|
|
fclose(fp);
|
|
return result;
|
|
}
|
|
if (!strcmp("native-store", argv[1])) {
|
|
int result;
|
|
FILE *fp;
|
|
|
|
if (argc != 5)
|
|
return error("fetch-native-store takes 3 args");
|
|
fp = fopen(git_path("FETCH_HEAD"), "a");
|
|
result = fetch_native_store(fp, argv[2], argv[3], argv[4],
|
|
verbose, force);
|
|
fclose(fp);
|
|
return result;
|
|
}
|
|
if (!strcmp("parse-reflist", argv[1])) {
|
|
const char *reflist;
|
|
if (argc != 3)
|
|
return error("parse-reflist takes 1 arg");
|
|
reflist = argv[2];
|
|
if (!strcmp(reflist, "-"))
|
|
reflist = get_stdin();
|
|
return parse_reflist(reflist);
|
|
}
|
|
if (!strcmp("pick-rref", argv[1])) {
|
|
const char *ls_remote_result;
|
|
if (argc != 4)
|
|
return error("pick-rref takes 2 args");
|
|
ls_remote_result = argv[3];
|
|
if (!strcmp(ls_remote_result, "-"))
|
|
ls_remote_result = get_stdin();
|
|
return pick_rref(sopt, argv[2], ls_remote_result);
|
|
}
|
|
if (!strcmp("expand-refs-wildcard", argv[1])) {
|
|
const char *reflist;
|
|
if (argc < 4)
|
|
return error("expand-refs-wildcard takes at least 2 args");
|
|
reflist = argv[2];
|
|
if (!strcmp(reflist, "-"))
|
|
reflist = get_stdin();
|
|
return expand_refs_wildcard(reflist, argc - 3, argv + 3);
|
|
}
|
|
|
|
return error("Unknown subcommand: %s", argv[1]);
|
|
}
|