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提交 19fb6136 编写于 作者: J Jeff King
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Merge branch 'nd/builtin-to-libgit' 

Code cleanups so that libgit.a does not depend on anything in the
builtin/ directory.

* nd/builtin-to-libgit:
  fetch-pack: move core code to libgit.a
  fetch-pack: remove global (static) configuration variable "args"
  send-pack: move core code to libgit.a
  Move setup_diff_pager to libgit.a
  Move print_commit_list to libgit.a
  Move estimate_bisect_steps to libgit.a
  Move try_merge_command and checkout_fast_forward to libgit.a
上级 9d91c0e3 745f7a8c
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Showing with 1535 addition and 1497 deletion
Makefile
浏览文件 @ 19fb6136
......@@ -746,6 +746,7 @@ LIB_OBJS += editor.o
LIB_OBJS += entry.o
LIB_OBJS += environment.o
LIB_OBJS += exec_cmd.o
LIB_OBJS += fetch-pack.o
LIB_OBJS += fsck.o
LIB_OBJS += gettext.o
LIB_OBJS += gpg-interface.o
......@@ -763,6 +764,7 @@ LIB_OBJS += lockfile.o
LIB_OBJS += log-tree.o
LIB_OBJS += mailmap.o
LIB_OBJS += match-trees.o
LIB_OBJS += merge.o
LIB_OBJS += merge-file.o
LIB_OBJS += merge-recursive.o
LIB_OBJS += mergesort.o
......@@ -797,6 +799,7 @@ LIB_OBJS += rerere.o
LIB_OBJS += resolve-undo.o
LIB_OBJS += revision.o
LIB_OBJS += run-command.o
LIB_OBJS += send-pack.o
LIB_OBJS += sequencer.o
LIB_OBJS += server-info.o
LIB_OBJS += setup.o
......
bisect.c
浏览文件 @ 19fb6136
......@@ -956,3 +956,41 @@ int bisect_next_all(const char *prefix, int no_checkout)
return bisect_checkout(bisect_rev_hex, no_checkout);
}
static inline int log2i(int n)
{
int log2 = 0;
for (; n > 1; n >>= 1)
log2++;
return log2;
}
static inline int exp2i(int n)
{
return 1 << n;
}
/*
* Estimate the number of bisect steps left (after the current step)
*
* For any x between 0 included and 2^n excluded, the probability for
* n - 1 steps left looks like:
*
* P(2^n + x) == (2^n - x) / (2^n + x)
*
* and P(2^n + x) < 0.5 means 2^n < 3x
*/
int estimate_bisect_steps(int all)
{
int n, x, e;
if (all < 3)
return 0;
n = log2i(all);
e = exp2i(n);
x = all - e;
return (e < 3 * x) ? n : n - 1;
}
bisect.h
浏览文件 @ 19fb6136
......@@ -11,10 +11,6 @@ extern struct commit_list *filter_skipped(struct commit_list *list,
int *count,
int *skipped_first);
extern void print_commit_list(struct commit_list *list,
const char *format_cur,
const char *format_last);
#define BISECT_SHOW_ALL (1<<0)
#define REV_LIST_QUIET (1<<1)
......
builtin.h
浏览文件 @ 19fb6136
......@@ -37,10 +37,6 @@ int copy_note_for_rewrite(struct notes_rewrite_cfg *c,
const unsigned char *from_obj, const unsigned char *to_obj);
void finish_copy_notes_for_rewrite(struct notes_rewrite_cfg *c);
extern int check_pager_config(const char *cmd);
struct diff_options;
extern void setup_diff_pager(struct diff_options *);
extern int textconv_object(const char *path, unsigned mode, const unsigned char *sha1, int sha1_valid, char **buf, unsigned long *buf_size);
extern int cmd_add(int argc, const char **argv, const char *prefix);
......
builtin/diff.c
浏览文件 @ 19fb6136
......@@ -418,19 +418,3 @@ int cmd_diff(int argc, const char **argv, const char *prefix)
refresh_index_quietly();
return result;
}
void setup_diff_pager(struct diff_options *opt)
{
/*
* If the user asked for our exit code, then either they want --quiet
* or --exit-code. We should definitely not bother with a pager in the
* former case, as we will generate no output. Since we still properly
* report our exit code even when a pager is run, we _could_ run a
* pager with --exit-code. But since we have not done so historically,
* and because it is easy to find people oneline advising "git diff
* --exit-code" in hooks and other scripts, we do not do so.
*/
if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) &&
check_pager_config("diff") != 0)
setup_pager();
}
builtin/fetch-pack.c
浏览文件 @ 19fb6136
此差异已折叠。
builtin/merge.c
浏览文件 @ 19fb6136
......@@ -628,59 +628,6 @@ static void write_tree_trivial(unsigned char *sha1)
die(_("git write-tree failed to write a tree"));
}
static const char *merge_argument(struct commit *commit)
{
if (commit)
return sha1_to_hex(commit->object.sha1);
else
return EMPTY_TREE_SHA1_HEX;
}
int try_merge_command(const char *strategy, size_t xopts_nr,
const char **xopts, struct commit_list *common,
const char *head_arg, struct commit_list *remotes)
{
const char **args;
int i = 0, x = 0, ret;
struct commit_list *j;
struct strbuf buf = STRBUF_INIT;
args = xmalloc((4 + xopts_nr + commit_list_count(common) +
commit_list_count(remotes)) * sizeof(char *));
strbuf_addf(&buf, "merge-%s", strategy);
args[i++] = buf.buf;
for (x = 0; x < xopts_nr; x++) {
char *s = xmalloc(strlen(xopts[x])+2+1);
strcpy(s, "--");
strcpy(s+2, xopts[x]);
args[i++] = s;
}
for (j = common; j; j = j->next)
args[i++] = xstrdup(merge_argument(j->item));
args[i++] = "--";
args[i++] = head_arg;
for (j = remotes; j; j = j->next)
args[i++] = xstrdup(merge_argument(j->item));
args[i] = NULL;
ret = run_command_v_opt(args, RUN_GIT_CMD);
strbuf_release(&buf);
i = 1;
for (x = 0; x < xopts_nr; x++)
free((void *)args[i++]);
for (j = common; j; j = j->next)
free((void *)args[i++]);
i += 2;
for (j = remotes; j; j = j->next)
free((void *)args[i++]);
free(args);
discard_cache();
if (read_cache() < 0)
die(_("failed to read the cache"));
resolve_undo_clear();
return ret;
}
static int try_merge_strategy(const char *strategy, struct commit_list *common,
struct commit_list *remoteheads,
struct commit *head, const char *head_arg)
......@@ -762,56 +709,6 @@ static int count_unmerged_entries(void)
return ret;
}
int checkout_fast_forward(const unsigned char *head, const unsigned char *remote)
{
struct tree *trees[MAX_UNPACK_TREES];
struct unpack_trees_options opts;
struct tree_desc t[MAX_UNPACK_TREES];
int i, fd, nr_trees = 0;
struct dir_struct dir;
struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
refresh_cache(REFRESH_QUIET);
fd = hold_locked_index(lock_file, 1);
memset(&trees, 0, sizeof(trees));
memset(&opts, 0, sizeof(opts));
memset(&t, 0, sizeof(t));
if (overwrite_ignore) {
memset(&dir, 0, sizeof(dir));
dir.flags |= DIR_SHOW_IGNORED;
setup_standard_excludes(&dir);
opts.dir = &dir;
}
opts.head_idx = 1;
opts.src_index = &the_index;
opts.dst_index = &the_index;
opts.update = 1;
opts.verbose_update = 1;
opts.merge = 1;
opts.fn = twoway_merge;
setup_unpack_trees_porcelain(&opts, "merge");
trees[nr_trees] = parse_tree_indirect(head);
if (!trees[nr_trees++])
return -1;
trees[nr_trees] = parse_tree_indirect(remote);
if (!trees[nr_trees++])
return -1;
for (i = 0; i < nr_trees; i++) {
parse_tree(trees[i]);
init_tree_desc(t+i, trees[i]->buffer, trees[i]->size);
}
if (unpack_trees(nr_trees, t, &opts))
return -1;
if (write_cache(fd, active_cache, active_nr) ||
commit_locked_index(lock_file))
die(_("unable to write new index file"));
return 0;
}
static void split_merge_strategies(const char *string, struct strategy **list,
int *nr, int *alloc)
{
......@@ -1424,7 +1321,8 @@ int cmd_merge(int argc, const char **argv, const char *prefix)
}
if (checkout_fast_forward(head_commit->object.sha1,
commit->object.sha1)) {
commit->object.sha1,
overwrite_ignore)) {
ret = 1;
goto done;
}
......
builtin/rev-list.c
浏览文件 @ 19fb6136
......@@ -201,55 +201,6 @@ static void show_edge(struct commit *commit)
printf("-%s\n", sha1_to_hex(commit->object.sha1));
}
static inline int log2i(int n)
{
int log2 = 0;
for (; n > 1; n >>= 1)
log2++;
return log2;
}
static inline int exp2i(int n)
{
return 1 << n;
}
/*
* Estimate the number of bisect steps left (after the current step)
*
* For any x between 0 included and 2^n excluded, the probability for
* n - 1 steps left looks like:
*
* P(2^n + x) == (2^n - x) / (2^n + x)
*
* and P(2^n + x) < 0.5 means 2^n < 3x
*/
int estimate_bisect_steps(int all)
{
int n, x, e;
if (all < 3)
return 0;
n = log2i(all);
e = exp2i(n);
x = all - e;
return (e < 3 * x) ? n : n - 1;
}
void print_commit_list(struct commit_list *list,
const char *format_cur,
const char *format_last)
{
for ( ; list; list = list->next) {
const char *format = list->next ? format_cur : format_last;
printf(format, sha1_to_hex(list->item->object.sha1));
}
}
static void print_var_str(const char *var, const char *val)
{
printf("%s='%s'\n", var, val);
......
builtin/send-pack.c
浏览文件 @ 19fb6136
......@@ -16,164 +16,6 @@ static const char send_pack_usage[] =
static struct send_pack_args args;
static int feed_object(const unsigned char *sha1, int fd, int negative)
{
char buf[42];
if (negative && !has_sha1_file(sha1))
return 1;
memcpy(buf + negative, sha1_to_hex(sha1), 40);
if (negative)
buf[0] = '^';
buf[40 + negative] = '\n';
return write_or_whine(fd, buf, 41 + negative, "send-pack: send refs");
}
/*
* Make a pack stream and spit it out into file descriptor fd
*/
static int pack_objects(int fd, struct ref *refs, struct extra_have_objects *extra, struct send_pack_args *args)
{
/*
* The child becomes pack-objects --revs; we feed
* the revision parameters to it via its stdin and
* let its stdout go back to the other end.
*/
const char *argv[] = {
"pack-objects",
"--all-progress-implied",
"--revs",
"--stdout",
NULL,
NULL,
NULL,
NULL,
NULL,
};
struct child_process po;
int i;
i = 4;
if (args->use_thin_pack)
argv[i++] = "--thin";
if (args->use_ofs_delta)
argv[i++] = "--delta-base-offset";
if (args->quiet || !args->progress)
argv[i++] = "-q";
if (args->progress)
argv[i++] = "--progress";
memset(&po, 0, sizeof(po));
po.argv = argv;
po.in = -1;
po.out = args->stateless_rpc ? -1 : fd;
po.git_cmd = 1;
if (start_command(&po))
die_errno("git pack-objects failed");
/*
* We feed the pack-objects we just spawned with revision
* parameters by writing to the pipe.
*/
for (i = 0; i < extra->nr; i++)
if (!feed_object(extra->array[i], po.in, 1))
break;
while (refs) {
if (!is_null_sha1(refs->old_sha1) &&
!feed_object(refs->old_sha1, po.in, 1))
break;
if (!is_null_sha1(refs->new_sha1) &&
!feed_object(refs->new_sha1, po.in, 0))
break;
refs = refs->next;
}
close(po.in);
if (args->stateless_rpc) {
char *buf = xmalloc(LARGE_PACKET_MAX);
while (1) {
ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX);
if (n <= 0)
break;
send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX);
}
free(buf);
close(po.out);
po.out = -1;
}
if (finish_command(&po))
return -1;
return 0;
}
static int receive_status(int in, struct ref *refs)
{
struct ref *hint;
char line[1000];
int ret = 0;
int len = packet_read_line(in, line, sizeof(line));
if (len < 10 || memcmp(line, "unpack ", 7))
return error("did not receive remote status");
if (memcmp(line, "unpack ok\n", 10)) {
char *p = line + strlen(line) - 1;
if (*p == '\n')
*p = '\0';
error("unpack failed: %s", line + 7);
ret = -1;
}
hint = NULL;
while (1) {
char *refname;
char *msg;
len = packet_read_line(in, line, sizeof(line));
if (!len)
break;
if (len < 3 ||
(memcmp(line, "ok ", 3) && memcmp(line, "ng ", 3))) {
fprintf(stderr, "protocol error: %s\n", line);
ret = -1;
break;
}
line[strlen(line)-1] = '\0';
refname = line + 3;
msg = strchr(refname, ' ');
if (msg)
*msg++ = '\0';
/* first try searching at our hint, falling back to all refs */
if (hint)
hint = find_ref_by_name(hint, refname);
if (!hint)
hint = find_ref_by_name(refs, refname);
if (!hint) {
warning("remote reported status on unknown ref: %s",
refname);
continue;
}
if (hint->status != REF_STATUS_EXPECTING_REPORT) {
warning("remote reported status on unexpected ref: %s",
refname);
continue;
}
if (line[0] == 'o' && line[1] == 'k')
hint->status = REF_STATUS_OK;
else {
hint->status = REF_STATUS_REMOTE_REJECT;
ret = -1;
}
if (msg)
hint->remote_status = xstrdup(msg);
/* start our next search from the next ref */
hint = hint->next;
}
return ret;
}
static void print_helper_status(struct ref *ref)
{
struct strbuf buf = STRBUF_INIT;
......@@ -227,181 +69,6 @@ static void print_helper_status(struct ref *ref)
strbuf_release(&buf);
}
static int sideband_demux(int in, int out, void *data)
{
int *fd = data, ret;
#ifdef NO_PTHREADS
close(fd[1]);
#endif
ret = recv_sideband("send-pack", fd[0], out);
close(out);
return ret;
}
int send_pack(struct send_pack_args *args,
int fd[], struct child_process *conn,
struct ref *remote_refs,
struct extra_have_objects *extra_have)
{
int in = fd[0];
int out = fd[1];
struct strbuf req_buf = STRBUF_INIT;
struct ref *ref;
int new_refs;
int allow_deleting_refs = 0;
int status_report = 0;
int use_sideband = 0;
int quiet_supported = 0;
int agent_supported = 0;
unsigned cmds_sent = 0;
int ret;
struct async demux;
/* Does the other end support the reporting? */
if (server_supports("report-status"))
status_report = 1;
if (server_supports("delete-refs"))
allow_deleting_refs = 1;
if (server_supports("ofs-delta"))
args->use_ofs_delta = 1;
if (server_supports("side-band-64k"))
use_sideband = 1;
if (server_supports("quiet"))
quiet_supported = 1;
if (server_supports("agent"))
agent_supported = 1;
if (!remote_refs) {
fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
"Perhaps you should specify a branch such as 'master'.\n");
return 0;
}
/*
* Finally, tell the other end!
*/
new_refs = 0;
for (ref = remote_refs; ref; ref = ref->next) {
if (!ref->peer_ref && !args->send_mirror)
continue;
/* Check for statuses set by set_ref_status_for_push() */
switch (ref->status) {
case REF_STATUS_REJECT_NONFASTFORWARD:
case REF_STATUS_UPTODATE:
continue;
default:
; /* do nothing */
}
if (ref->deletion && !allow_deleting_refs) {
ref->status = REF_STATUS_REJECT_NODELETE;
continue;
}
if (!ref->deletion)
new_refs++;
if (args->dry_run) {
ref->status = REF_STATUS_OK;
} else {
char *old_hex = sha1_to_hex(ref->old_sha1);
char *new_hex = sha1_to_hex(ref->new_sha1);
int quiet = quiet_supported && (args->quiet || !args->progress);
if (!cmds_sent && (status_report || use_sideband ||
quiet || agent_supported)) {
packet_buf_write(&req_buf,
"%s %s %s%c%s%s%s%s%s",
old_hex, new_hex, ref->name, 0,
status_report ? " report-status" : "",
use_sideband ? " side-band-64k" : "",
quiet ? " quiet" : "",
agent_supported ? " agent=" : "",
agent_supported ? git_user_agent_sanitized() : ""
);
}
else
packet_buf_write(&req_buf, "%s %s %s",
old_hex, new_hex, ref->name);
ref->status = status_report ?
REF_STATUS_EXPECTING_REPORT :
REF_STATUS_OK;
cmds_sent++;
}
}
if (args->stateless_rpc) {
if (!args->dry_run && cmds_sent) {
packet_buf_flush(&req_buf);
send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX);
}
} else {
safe_write(out, req_buf.buf, req_buf.len);
packet_flush(out);
}
strbuf_release(&req_buf);
if (use_sideband && cmds_sent) {
memset(&demux, 0, sizeof(demux));
demux.proc = sideband_demux;
demux.data = fd;
demux.out = -1;
if (start_async(&demux))
die("send-pack: unable to fork off sideband demultiplexer");
in = demux.out;
}
if (new_refs && cmds_sent) {
if (pack_objects(out, remote_refs, extra_have, args) < 0) {
for (ref = remote_refs; ref; ref = ref->next)
ref->status = REF_STATUS_NONE;
if (args->stateless_rpc)
close(out);
if (git_connection_is_socket(conn))
shutdown(fd[0], SHUT_WR);
if (use_sideband)
finish_async(&demux);
return -1;
}
}
if (args->stateless_rpc && cmds_sent)
packet_flush(out);
if (status_report && cmds_sent)
ret = receive_status(in, remote_refs);
else
ret = 0;
if (args->stateless_rpc)
packet_flush(out);
if (use_sideband && cmds_sent) {
if (finish_async(&demux)) {
error("error in sideband demultiplexer");
ret = -1;
}
close(demux.out);
}
if (ret < 0)
return ret;
if (args->porcelain)
return 0;
for (ref = remote_refs; ref; ref = ref->next) {
switch (ref->status) {
case REF_STATUS_NONE:
case REF_STATUS_UPTODATE:
case REF_STATUS_OK:
break;
default:
return -1;
}
}
return 0;
}
int cmd_send_pack(int argc, const char **argv, const char *prefix)
{
int i, nr_refspecs = 0;
......
cache.h
浏览文件 @ 19fb6136
......@@ -1183,6 +1183,7 @@ extern int pager_in_use(void);
extern int pager_use_color;
extern int term_columns(void);
extern int decimal_width(int);
extern int check_pager_config(const char *cmd);
extern const char *editor_program;
extern const char *askpass_program;
......@@ -1265,8 +1266,15 @@ struct startup_info {
};
extern struct startup_info *startup_info;
/* builtin/merge.c */
int checkout_fast_forward(const unsigned char *from, const unsigned char *to);
/* merge.c */
struct commit_list;
int try_merge_command(const char *strategy, size_t xopts_nr,
const char **xopts, struct commit_list *common,
const char *head_arg, struct commit_list *remotes);
int checkout_fast_forward(const unsigned char *from,
const unsigned char *to,
int overwrite_ignore);
int sane_execvp(const char *file, char *const argv[]);
......
commit.c
浏览文件 @ 19fb6136
......@@ -1347,3 +1347,13 @@ struct commit_list **commit_list_append(struct commit *commit,
new->next = NULL;
return &new->next;
}
void print_commit_list(struct commit_list *list,
const char *format_cur,
const char *format_last)
{
for ( ; list; list = list->next) {
const char *format = list->next ? format_cur : format_last;
printf(format, sha1_to_hex(list->item->object.sha1));
}
}
commit.h
浏览文件 @ 19fb6136
......@@ -222,4 +222,8 @@ struct commit *get_merge_parent(const char *name);
extern int parse_signed_commit(const unsigned char *sha1,
struct strbuf *message, struct strbuf *signature);
extern void print_commit_list(struct commit_list *list,
const char *format_cur,
const char *format_last);
#endif /* COMMIT_H */
diff.c
浏览文件 @ 19fb6136
......@@ -4880,3 +4880,19 @@ size_t fill_textconv(struct userdiff_driver *driver,
return size;
}
void setup_diff_pager(struct diff_options *opt)
{
/*
* If the user asked for our exit code, then either they want --quiet
* or --exit-code. We should definitely not bother with a pager in the
* former case, as we will generate no output. Since we still properly
* report our exit code even when a pager is run, we _could_ run a
* pager with --exit-code. But since we have not done so historically,
* and because it is easy to find people oneline advising "git diff
* --exit-code" in hooks and other scripts, we do not do so.
*/
if (!DIFF_OPT_TST(opt, EXIT_WITH_STATUS) &&
check_pager_config("diff") != 0)
setup_pager();
}
diff.h
浏览文件 @ 19fb6136
......@@ -335,5 +335,6 @@ extern int parse_rename_score(const char **cp_p);
extern int print_stat_summary(FILE *fp, int files,
int insertions, int deletions);
extern void setup_diff_pager(struct diff_options *);
#endif /* DIFF_H */
fetch-pack.c 0 → 100644
浏览文件 @ 19fb6136
此差异已折叠。
git.c
浏览文件 @ 19fb6136
......@@ -17,39 +17,6 @@ const char git_more_info_string[] =
static struct startup_info git_startup_info;
static int use_pager = -1;
struct pager_config {
const char *cmd;
int want;
char *value;
};
static int pager_command_config(const char *var, const char *value, void *data)
{
struct pager_config *c = data;
if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd)) {
int b = git_config_maybe_bool(var, value);
if (b >= 0)
c->want = b;
else {
c->want = 1;
c->value = xstrdup(value);
}
}
return 0;
}
/* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */
int check_pager_config(const char *cmd)
{
struct pager_config c;
c.cmd = cmd;
c.want = -1;
c.value = NULL;
git_config(pager_command_config, &c);
if (c.value)
pager_program = c.value;
return c.want;
}
static void commit_pager_choice(void) {
switch (use_pager) {
......
merge-recursive.h
浏览文件 @ 19fb6136
......@@ -59,9 +59,4 @@ struct tree *write_tree_from_memory(struct merge_options *o);
int parse_merge_opt(struct merge_options *out, const char *s);
/* builtin/merge.c */
int try_merge_command(const char *strategy, size_t xopts_nr,
const char **xopts, struct commit_list *common,
const char *head_arg, struct commit_list *remotes);
#endif
merge.c 0 → 100644
浏览文件 @ 19fb6136
#include "cache.h"
#include "commit.h"
#include "run-command.h"
#include "resolve-undo.h"
#include "tree-walk.h"
#include "unpack-trees.h"
#include "dir.h"
static const char *merge_argument(struct commit *commit)
{
if (commit)
return sha1_to_hex(commit->object.sha1);
else
return EMPTY_TREE_SHA1_HEX;
}
int try_merge_command(const char *strategy, size_t xopts_nr,
const char **xopts, struct commit_list *common,
const char *head_arg, struct commit_list *remotes)
{
const char **args;
int i = 0, x = 0, ret;
struct commit_list *j;
struct strbuf buf = STRBUF_INIT;
args = xmalloc((4 + xopts_nr + commit_list_count(common) +
commit_list_count(remotes)) * sizeof(char *));
strbuf_addf(&buf, "merge-%s", strategy);
args[i++] = buf.buf;
for (x = 0; x < xopts_nr; x++) {
char *s = xmalloc(strlen(xopts[x])+2+1);
strcpy(s, "--");
strcpy(s+2, xopts[x]);
args[i++] = s;
}
for (j = common; j; j = j->next)
args[i++] = xstrdup(merge_argument(j->item));
args[i++] = "--";
args[i++] = head_arg;
for (j = remotes; j; j = j->next)
args[i++] = xstrdup(merge_argument(j->item));
args[i] = NULL;
ret = run_command_v_opt(args, RUN_GIT_CMD);
strbuf_release(&buf);
i = 1;
for (x = 0; x < xopts_nr; x++)
free((void *)args[i++]);
for (j = common; j; j = j->next)
free((void *)args[i++]);
i += 2;
for (j = remotes; j; j = j->next)
free((void *)args[i++]);
free(args);
discard_cache();
if (read_cache() < 0)
die(_("failed to read the cache"));
resolve_undo_clear();
return ret;
}
int checkout_fast_forward(const unsigned char *head,
const unsigned char *remote,
int overwrite_ignore)
{
struct tree *trees[MAX_UNPACK_TREES];
struct unpack_trees_options opts;
struct tree_desc t[MAX_UNPACK_TREES];
int i, fd, nr_trees = 0;
struct dir_struct dir;
struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
refresh_cache(REFRESH_QUIET);
fd = hold_locked_index(lock_file, 1);
memset(&trees, 0, sizeof(trees));
memset(&opts, 0, sizeof(opts));
memset(&t, 0, sizeof(t));
if (overwrite_ignore) {
memset(&dir, 0, sizeof(dir));
dir.flags |= DIR_SHOW_IGNORED;
setup_standard_excludes(&dir);
opts.dir = &dir;
}
opts.head_idx = 1;
opts.src_index = &the_index;
opts.dst_index = &the_index;
opts.update = 1;
opts.verbose_update = 1;
opts.merge = 1;
opts.fn = twoway_merge;
setup_unpack_trees_porcelain(&opts, "merge");
trees[nr_trees] = parse_tree_indirect(head);
if (!trees[nr_trees++])
return -1;
trees[nr_trees] = parse_tree_indirect(remote);
if (!trees[nr_trees++])
return -1;
for (i = 0; i < nr_trees; i++) {
parse_tree(trees[i]);
init_tree_desc(t+i, trees[i]->buffer, trees[i]->size);
}
if (unpack_trees(nr_trees, t, &opts))
return -1;
if (write_cache(fd, active_cache, active_nr) ||
commit_locked_index(lock_file))
die(_("unable to write new index file"));
return 0;
}
pager.c
浏览文件 @ 19fb6136
......@@ -6,6 +6,12 @@
#define DEFAULT_PAGER "less"
#endif
struct pager_config {
const char *cmd;
int want;
char *value;
};
/*
* This is split up from the rest of git so that we can do
* something different on Windows.
......@@ -141,3 +147,31 @@ int decimal_width(int number)
i *= 10;
return width;
}
static int pager_command_config(const char *var, const char *value, void *data)
{
struct pager_config *c = data;
if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd)) {
int b = git_config_maybe_bool(var, value);
if (b >= 0)
c->want = b;
else {
c->want = 1;
c->value = xstrdup(value);
}
}
return 0;
}
/* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */
int check_pager_config(const char *cmd)
{
struct pager_config c;
c.cmd = cmd;
c.want = -1;
c.value = NULL;
git_config(pager_command_config, &c);
if (c.value)
pager_program = c.value;
return c.want;
}
send-pack.c 0 → 100644
浏览文件 @ 19fb6136
#include "builtin.h"
#include "commit.h"
#include "refs.h"
#include "pkt-line.h"
#include "sideband.h"
#include "run-command.h"
#include "remote.h"
#include "send-pack.h"
#include "quote.h"
#include "transport.h"
#include "version.h"
static int feed_object(const unsigned char *sha1, int fd, int negative)
{
char buf[42];
if (negative && !has_sha1_file(sha1))
return 1;
memcpy(buf + negative, sha1_to_hex(sha1), 40);
if (negative)
buf[0] = '^';
buf[40 + negative] = '\n';
return write_or_whine(fd, buf, 41 + negative, "send-pack: send refs");
}
/*
* Make a pack stream and spit it out into file descriptor fd
*/
static int pack_objects(int fd, struct ref *refs, struct extra_have_objects *extra, struct send_pack_args *args)
{
/*
* The child becomes pack-objects --revs; we feed
* the revision parameters to it via its stdin and
* let its stdout go back to the other end.
*/
const char *argv[] = {
"pack-objects",
"--all-progress-implied",
"--revs",
"--stdout",
NULL,
NULL,
NULL,
NULL,
NULL,
};
struct child_process po;
int i;
i = 4;
if (args->use_thin_pack)
argv[i++] = "--thin";
if (args->use_ofs_delta)
argv[i++] = "--delta-base-offset";
if (args->quiet || !args->progress)
argv[i++] = "-q";
if (args->progress)
argv[i++] = "--progress";
memset(&po, 0, sizeof(po));
po.argv = argv;
po.in = -1;
po.out = args->stateless_rpc ? -1 : fd;
po.git_cmd = 1;
if (start_command(&po))
die_errno("git pack-objects failed");
/*
* We feed the pack-objects we just spawned with revision
* parameters by writing to the pipe.
*/
for (i = 0; i < extra->nr; i++)
if (!feed_object(extra->array[i], po.in, 1))
break;
while (refs) {
if (!is_null_sha1(refs->old_sha1) &&
!feed_object(refs->old_sha1, po.in, 1))
break;
if (!is_null_sha1(refs->new_sha1) &&
!feed_object(refs->new_sha1, po.in, 0))
break;
refs = refs->next;
}
close(po.in);
if (args->stateless_rpc) {
char *buf = xmalloc(LARGE_PACKET_MAX);
while (1) {
ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX);
if (n <= 0)
break;
send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX);
}
free(buf);
close(po.out);
po.out = -1;
}
if (finish_command(&po))
return -1;
return 0;
}
static int receive_status(int in, struct ref *refs)
{
struct ref *hint;
char line[1000];
int ret = 0;
int len = packet_read_line(in, line, sizeof(line));
if (len < 10 || memcmp(line, "unpack ", 7))
return error("did not receive remote status");
if (memcmp(line, "unpack ok\n", 10)) {
char *p = line + strlen(line) - 1;
if (*p == '\n')
*p = '\0';
error("unpack failed: %s", line + 7);
ret = -1;
}
hint = NULL;
while (1) {
char *refname;
char *msg;
len = packet_read_line(in, line, sizeof(line));
if (!len)
break;
if (len < 3 ||
(memcmp(line, "ok ", 3) && memcmp(line, "ng ", 3))) {
fprintf(stderr, "protocol error: %s\n", line);
ret = -1;
break;
}
line[strlen(line)-1] = '\0';
refname = line + 3;
msg = strchr(refname, ' ');
if (msg)
*msg++ = '\0';
/* first try searching at our hint, falling back to all refs */
if (hint)
hint = find_ref_by_name(hint, refname);
if (!hint)
hint = find_ref_by_name(refs, refname);
if (!hint) {
warning("remote reported status on unknown ref: %s",
refname);
continue;
}
if (hint->status != REF_STATUS_EXPECTING_REPORT) {
warning("remote reported status on unexpected ref: %s",
refname);
continue;
}
if (line[0] == 'o' && line[1] == 'k')
hint->status = REF_STATUS_OK;
else {
hint->status = REF_STATUS_REMOTE_REJECT;
ret = -1;
}
if (msg)
hint->remote_status = xstrdup(msg);
/* start our next search from the next ref */
hint = hint->next;
}
return ret;
}
static int sideband_demux(int in, int out, void *data)
{
int *fd = data, ret;
#ifdef NO_PTHREADS
close(fd[1]);
#endif
ret = recv_sideband("send-pack", fd[0], out);
close(out);
return ret;
}
int send_pack(struct send_pack_args *args,
int fd[], struct child_process *conn,
struct ref *remote_refs,
struct extra_have_objects *extra_have)
{
int in = fd[0];
int out = fd[1];
struct strbuf req_buf = STRBUF_INIT;
struct ref *ref;
int new_refs;
int allow_deleting_refs = 0;
int status_report = 0;
int use_sideband = 0;
int quiet_supported = 0;
int agent_supported = 0;
unsigned cmds_sent = 0;
int ret;
struct async demux;
/* Does the other end support the reporting? */
if (server_supports("report-status"))
status_report = 1;
if (server_supports("delete-refs"))
allow_deleting_refs = 1;
if (server_supports("ofs-delta"))
args->use_ofs_delta = 1;
if (server_supports("side-band-64k"))
use_sideband = 1;
if (server_supports("quiet"))
quiet_supported = 1;
if (server_supports("agent"))
agent_supported = 1;
if (!remote_refs) {
fprintf(stderr, "No refs in common and none specified; doing nothing.\n"
"Perhaps you should specify a branch such as 'master'.\n");
return 0;
}
/*
* Finally, tell the other end!
*/
new_refs = 0;
for (ref = remote_refs; ref; ref = ref->next) {
if (!ref->peer_ref && !args->send_mirror)
continue;
/* Check for statuses set by set_ref_status_for_push() */
switch (ref->status) {
case REF_STATUS_REJECT_NONFASTFORWARD:
case REF_STATUS_UPTODATE:
continue;
default:
; /* do nothing */
}
if (ref->deletion && !allow_deleting_refs) {
ref->status = REF_STATUS_REJECT_NODELETE;
continue;
}
if (!ref->deletion)
new_refs++;
if (args->dry_run) {
ref->status = REF_STATUS_OK;
} else {
char *old_hex = sha1_to_hex(ref->old_sha1);
char *new_hex = sha1_to_hex(ref->new_sha1);
int quiet = quiet_supported && (args->quiet || !args->progress);
if (!cmds_sent && (status_report || use_sideband ||
quiet || agent_supported)) {
packet_buf_write(&req_buf,
"%s %s %s%c%s%s%s%s%s",
old_hex, new_hex, ref->name, 0,
status_report ? " report-status" : "",
use_sideband ? " side-band-64k" : "",
quiet ? " quiet" : "",
agent_supported ? " agent=" : "",
agent_supported ? git_user_agent_sanitized() : ""
);
}
else
packet_buf_write(&req_buf, "%s %s %s",
old_hex, new_hex, ref->name);
ref->status = status_report ?
REF_STATUS_EXPECTING_REPORT :
REF_STATUS_OK;
cmds_sent++;
}
}
if (args->stateless_rpc) {
if (!args->dry_run && cmds_sent) {
packet_buf_flush(&req_buf);
send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX);
}
} else {
safe_write(out, req_buf.buf, req_buf.len);
packet_flush(out);
}
strbuf_release(&req_buf);
if (use_sideband && cmds_sent) {
memset(&demux, 0, sizeof(demux));
demux.proc = sideband_demux;
demux.data = fd;
demux.out = -1;
if (start_async(&demux))
die("send-pack: unable to fork off sideband demultiplexer");
in = demux.out;
}
if (new_refs && cmds_sent) {
if (pack_objects(out, remote_refs, extra_have, args) < 0) {
for (ref = remote_refs; ref; ref = ref->next)
ref->status = REF_STATUS_NONE;
if (args->stateless_rpc)
close(out);
if (git_connection_is_socket(conn))
shutdown(fd[0], SHUT_WR);
if (use_sideband)
finish_async(&demux);
return -1;
}
}
if (args->stateless_rpc && cmds_sent)
packet_flush(out);
if (status_report && cmds_sent)
ret = receive_status(in, remote_refs);
else
ret = 0;
if (args->stateless_rpc)
packet_flush(out);
if (use_sideband && cmds_sent) {
if (finish_async(&demux)) {
error("error in sideband demultiplexer");
ret = -1;
}
close(demux.out);
}
if (ret < 0)
return ret;
if (args->porcelain)
return 0;
for (ref = remote_refs; ref; ref = ref->next) {
switch (ref->status) {
case REF_STATUS_NONE:
case REF_STATUS_UPTODATE:
case REF_STATUS_OK:
break;
default:
return -1;
}
}
return 0;
}
sequencer.c
浏览文件 @ 19fb6136
......@@ -191,7 +191,7 @@ static int fast_forward_to(const unsigned char *to, const unsigned char *from)
struct ref_lock *ref_lock;
read_cache();
if (checkout_fast_forward(from, to))
if (checkout_fast_forward(from, to, 1))
exit(1); /* the callee should have complained already */
ref_lock = lock_any_ref_for_update("HEAD", from, 0);
return write_ref_sha1(ref_lock, to, "cherry-pick");
......
transport.h
浏览文件 @ 19fb6136
......@@ -175,4 +175,9 @@ void transport_print_push_status(const char *dest, struct ref *refs,
typedef void alternate_ref_fn(const struct ref *, void *);
extern void for_each_alternate_ref(alternate_ref_fn, void *);
struct send_pack_args;
extern int send_pack(struct send_pack_args *args,
int fd[], struct child_process *conn,
struct ref *remote_refs,
struct extra_have_objects *extra_have);
#endif
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