git/builtin/merge-index.c
Elijah Newren d1cbe1e6d8 hash-ll.h: split out of hash.h to remove dependency on repository.h
hash.h depends upon and includes repository.h, due to the definition and
use of the_hash_algo (defined as the_repository->hash_algo).  However,
most headers trying to include hash.h are only interested in the layout
of the structs like object_id.  Move the parts of hash.h that do not
depend upon repository.h into a new file hash-ll.h (the "low level"
parts of hash.h), and adjust other files to use this new header where
the convenience inline functions aren't needed.

This allows hash.h and object.h to be fairly small, minimal headers.  It
also exposes a lot of hidden dependencies on both path.h (which was
brought in by repository.h) and repository.h (which was previously
implicitly brought in by object.h), so also adjust other files to be
more explicit about what they depend upon.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-24 12:47:32 -07:00

120 lines
2.6 KiB
C

#define USE_THE_INDEX_VARIABLE
#include "builtin.h"
#include "hex.h"
#include "repository.h"
#include "run-command.h"
static const char *pgm;
static int one_shot, quiet;
static int err;
static int merge_entry(int pos, const char *path)
{
int found;
const char *arguments[] = { pgm, "", "", "", path, "", "", "", NULL };
char hexbuf[4][GIT_MAX_HEXSZ + 1];
char ownbuf[4][60];
struct child_process cmd = CHILD_PROCESS_INIT;
if (pos >= the_index.cache_nr)
die("git merge-index: %s not in the cache", path);
found = 0;
do {
const struct cache_entry *ce = the_index.cache[pos];
int stage = ce_stage(ce);
if (strcmp(ce->name, path))
break;
found++;
oid_to_hex_r(hexbuf[stage], &ce->oid);
xsnprintf(ownbuf[stage], sizeof(ownbuf[stage]), "%o", ce->ce_mode);
arguments[stage] = hexbuf[stage];
arguments[stage + 4] = ownbuf[stage];
} while (++pos < the_index.cache_nr);
if (!found)
die("git merge-index: %s not in the cache", path);
strvec_pushv(&cmd.args, arguments);
if (run_command(&cmd)) {
if (one_shot)
err++;
else {
if (!quiet)
die("merge program failed");
exit(1);
}
}
return found;
}
static void merge_one_path(const char *path)
{
int pos = index_name_pos(&the_index, path, strlen(path));
/*
* If it already exists in the cache as stage0, it's
* already merged and there is nothing to do.
*/
if (pos < 0)
merge_entry(-pos-1, path);
}
static void merge_all(void)
{
int i;
/* TODO: audit for interaction with sparse-index. */
ensure_full_index(&the_index);
for (i = 0; i < the_index.cache_nr; i++) {
const struct cache_entry *ce = the_index.cache[i];
if (!ce_stage(ce))
continue;
i += merge_entry(i, ce->name)-1;
}
}
int cmd_merge_index(int argc, const char **argv, const char *prefix)
{
int i, force_file = 0;
/* Without this we cannot rely on waitpid() to tell
* what happened to our children.
*/
signal(SIGCHLD, SIG_DFL);
if (argc < 3)
usage("git merge-index [-o] [-q] <merge-program> (-a | [--] [<filename>...])");
repo_read_index(the_repository);
/* TODO: audit for interaction with sparse-index. */
ensure_full_index(&the_index);
i = 1;
if (!strcmp(argv[i], "-o")) {
one_shot = 1;
i++;
}
if (!strcmp(argv[i], "-q")) {
quiet = 1;
i++;
}
pgm = argv[i++];
for (; i < argc; i++) {
const char *arg = argv[i];
if (!force_file && *arg == '-') {
if (!strcmp(arg, "--")) {
force_file = 1;
continue;
}
if (!strcmp(arg, "-a")) {
merge_all();
continue;
}
die("git merge-index: unknown option %s", arg);
}
merge_one_path(arg);
}
if (err && !quiet)
die("merge program failed");
return err;
}