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#include "builtin.h"

#include "cache.h"

#include "pack.h"

#include "pack-revindex.h"

#include "parse-options.h"

#define MAX_CHAIN 50

#define VERIFY_PACK_VERBOSE 01

#define VERIFY_PACK_STAT_ONLY 02

static void show_pack_info(struct packed_git *p, unsigned int flags)

{

uint32_t nr_objects, i;

int cnt;

int stat_only = flags & VERIFY_PACK_STAT_ONLY;

unsigned long chain_histogram[MAX_CHAIN+1], baseobjects;

nr_objects = p->num_objects;

memset(chain_histogram, 0, sizeof(chain_histogram));

baseobjects = 0;

for (i = 0; i < nr_objects; i++) {

const unsigned char *sha1;

unsigned char base_sha1[20];

const char *type;

unsigned long size;

unsigned long store_size;

off_t offset;

unsigned int delta_chain_length;

sha1 = nth_packed_object_sha1(p, i);

if (!sha1)

die("internal error pack-check nth-packed-object");

offset = nth_packed_object_offset(p, i);

type = packed_object_info_detail(p, offset, &size, &store_size,

&delta_chain_length,

base_sha1);

if (!stat_only)

printf("%s ", sha1_to_hex(sha1));

if (!delta_chain_length) {

if (!stat_only)

printf("%-6s %lu %lu %"PRIuMAX"\n",

type, size, store_size, (uintmax_t)offset);

baseobjects++;

}

else {

if (!stat_only)

printf("%-6s %lu %lu %"PRIuMAX" %u %s\n",

type, size, store_size, (uintmax_t)offset,

delta_chain_length, sha1_to_hex(base_sha1));

if (delta_chain_length <= MAX_CHAIN)

chain_histogram[delta_chain_length]++;

else

chain_histogram[0]++;

}

}

if (baseobjects)

printf("non delta: %lu object%s\n",

baseobjects, baseobjects > 1 ? "s" : "");

for (cnt = 1; cnt <= MAX_CHAIN; cnt++) {

if (!chain_histogram[cnt])

continue;

printf("chain length = %d: %lu object%s\n", cnt,

chain_histogram[cnt],

chain_histogram[cnt] > 1 ? "s" : "");

}

if (chain_histogram[0])

printf("chain length > %d: %lu object%s\n", MAX_CHAIN,

chain_histogram[0],

chain_histogram[0] > 1 ? "s" : "");

}

static int verify_one_pack(const char *path, unsigned int flags)

{

char arg[PATH_MAX];

int len;

int verbose = flags & VERIFY_PACK_VERBOSE;

int stat_only = flags & VERIFY_PACK_STAT_ONLY;

struct packed_git *pack;

int err;

len = strlcpy(arg, path, PATH_MAX);

if (len >= PATH_MAX)

return error("name too long: %s", path);

/*

* In addition to "foo.idx" we accept "foo.pack" and "foo";

* normalize these forms to "foo.idx" for add_packed_git().

*/

if (has_extension(arg, ".pack")) {

strcpy(arg + len - 5, ".idx");

len--;

} else if (!has_extension(arg, ".idx")) {

if (len + 4 >= PATH_MAX)

return error("name too long: %s.idx", arg);

strcpy(arg + len, ".idx");

len += 4;

}

/*

* add_packed_git() uses our buffer (containing "foo.idx") to

* build the pack filename ("foo.pack"). Make sure it fits.

*/

if (len + 1 >= PATH_MAX) {

arg[len - 4] = '\0';

return error("name too long: %s.pack", arg);

}

pack = add_packed_git(arg, len, 1);

if (!pack)

return error("packfile %s not found.", arg);

install_packed_git(pack);

if (!stat_only)

err = verify_pack(pack);

else

err = open_pack_index(pack);

if (verbose || stat_only) {

if (err)

printf("%s: bad\n", pack->pack_name);

else {

show_pack_info(pack, flags);

if (!stat_only)

printf("%s: ok\n", pack->pack_name);

}

}

return err;

}

static const char * const verify_pack_usage[] = {

"git verify-pack [-v|--verbose] [-s|--stat-only] <pack>...",

NULL

};

int cmd_verify_pack(int argc, const char **argv, const char *prefix)

{

int err = 0;

unsigned int flags = 0;

int i;

const struct option verify_pack_options[] = {

OPT_BIT('v', "verbose", &flags, "verbose",

VERIFY_PACK_VERBOSE),

OPT_BIT('s', "stat-only", &flags, "show statistics only",

VERIFY_PACK_STAT_ONLY),

OPT_END()

};

git_config(git_default_config, NULL);

argc = parse_options(argc, argv, prefix, verify_pack_options,

verify_pack_usage, 0);

if (argc < 1)

usage_with_options(verify_pack_usage, verify_pack_options);

for (i = 0; i < argc; i++) {

if (verify_one_pack(argv[i], flags))

err = 1;

discard_revindex();

}

return err;

}