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| | #include "builtin.h"
#include "cache.h"
#include "config.h"
#include "dir.h"
#include "git-compat-util.h"
#include "lockfile.h"
#include "packfile.h"
#include "parse-options.h"
#include "midx.h"
static char const * const builtin_midx_usage[] = {
N_("git midx --write [--pack-dir <packdir>]"),
NULL
};
static struct opts_midx {
const char *pack_dir;
int write;
} opts;
static int build_midx_from_packs(
const char *pack_dir,
const char **pack_names, uint32_t nr_packs,
const char **midx_id)
{
struct packed_git **packs;
const char **installed_pack_names;
uint32_t i, j, nr_installed_packs = 0;
uint32_t nr_objects = 0;
struct pack_midx_entry *objects;
struct pack_midx_entry **obj_ptrs;
uint32_t nr_total_packs = nr_packs;
uint32_t pack_offset = 0;
struct strbuf pack_path = STRBUF_INIT;
int baselen;
if (!nr_total_packs) {
*midx_id = NULL;
return 0;
}
ALLOC_ARRAY(packs, nr_total_packs);
ALLOC_ARRAY(installed_pack_names, nr_total_packs);
strbuf_addstr(&pack_path, pack_dir);
strbuf_addch(&pack_path, '/');
baselen = pack_path.len;
for (i = 0; i < nr_packs; i++) {
strbuf_setlen(&pack_path, baselen);
strbuf_addstr(&pack_path, pack_names[i]);
strbuf_strip_suffix(&pack_path, ".pack");
strbuf_addstr(&pack_path, ".idx");
packs[nr_installed_packs] = add_packed_git(pack_path.buf, pack_path.len, 0);
if (packs[nr_installed_packs] != NULL) {
if (open_pack_index(packs[nr_installed_packs]))
continue;
nr_objects += packs[nr_installed_packs]->num_objects;
installed_pack_names[nr_installed_packs] = pack_names[i];
nr_installed_packs++;
}
}
strbuf_release(&pack_path);
if (!nr_objects || !nr_installed_packs) {
FREE_AND_NULL(packs);
FREE_AND_NULL(installed_pack_names);
*midx_id = NULL;
return 0;
}
ALLOC_ARRAY(objects, nr_objects);
nr_objects = 0;
for (i = pack_offset; i < nr_installed_packs; i++) {
struct packed_git *p = packs[i];
for (j = 0; j < p->num_objects; j++) {
struct pack_midx_entry entry;
if (!nth_packed_object_oid(&entry.oid, p, j))
die("unable to get sha1 of object %u in %s",
i, p->pack_name);
entry.pack_int_id = i;
entry.offset = nth_packed_object_offset(p, j);
objects[nr_objects] = entry;
nr_objects++;
}
}
ALLOC_ARRAY(obj_ptrs, nr_objects);
for (i = 0; i < nr_objects; i++)
obj_ptrs[i] = &objects[i];
*midx_id = write_midx_file(pack_dir, NULL,
installed_pack_names, nr_installed_packs,
obj_ptrs, nr_objects);
FREE_AND_NULL(packs);
FREE_AND_NULL(installed_pack_names);
FREE_AND_NULL(obj_ptrs);
FREE_AND_NULL(objects);
return 0;
}
static int midx_write(void)
{
const char **pack_names = NULL;
uint32_t i, nr_packs = 0;
const char *midx_id = 0;
DIR *dir;
struct dirent *de;
dir = opendir(opts.pack_dir);
if (!dir) {
error_errno("unable to open object pack directory: %s",
opts.pack_dir);
return 1;
}
nr_packs = 256;
ALLOC_ARRAY(pack_names, nr_packs);
i = 0;
while ((de = readdir(dir)) != NULL) {
if (is_dot_or_dotdot(de->d_name))
continue;
if (ends_with(de->d_name, ".pack")) {
ALLOC_GROW(pack_names, i + 1, nr_packs);
pack_names[i++] = xstrdup(de->d_name);
}
}
nr_packs = i;
closedir(dir);
if (!nr_packs)
goto cleanup;
if (build_midx_from_packs(opts.pack_dir, pack_names, nr_packs, &midx_id))
die("failed to build MIDX");
if (midx_id == NULL)
goto cleanup;
printf("%s\n", midx_id);
cleanup:
if (pack_names)
FREE_AND_NULL(pack_names);
return 0;
}
int cmd_midx(int argc, const char **argv, const char *prefix)
{
static struct option builtin_midx_options[] = {
{ OPTION_STRING, 'p', "pack-dir", &opts.pack_dir,
N_("dir"),
N_("The pack directory containing set of packfile and pack-index pairs.") },
OPT_BOOL('w', "write", &opts.write,
N_("write midx file")),
OPT_END(),
};
if (argc == 2 && !strcmp(argv[1], "-h"))
usage_with_options(builtin_midx_usage, builtin_midx_options);
git_config(git_default_config, NULL);
if (!core_midx)
die(_("git-midx requires core.midx=true"));
argc = parse_options(argc, argv, prefix,
builtin_midx_options,
builtin_midx_usage, 0);
if (!opts.pack_dir) {
struct strbuf path = STRBUF_INIT;
strbuf_addstr(&path, get_object_directory());
strbuf_addstr(&path, "/pack");
opts.pack_dir = strbuf_detach(&path, NULL);
}
if (opts.write)
return midx_write();
usage_with_options(builtin_midx_usage, builtin_midx_options);
return 0;
}
|