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Commit | Line | Data |
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ff417260 | 1 | #include "builtin.h" |
0271611e | 2 | #include "cache.h" |
f394e093 | 3 | #include "gettext.h" |
41771fa4 | 4 | #include "hex.h" |
32637cdf | 5 | #include "pack.h" |
88a09a55 | 6 | #include "parse-options.h" |
0271611e | 7 | |
88a09a55 | 8 | static const char *const show_index_usage[] = { |
9 | "git show-index [--object-format=<hash-algorithm>]", | |
10 | NULL | |
11 | }; | |
03c5c102 | 12 | |
ff417260 | 13 | int cmd_show_index(int argc, const char **argv, const char *prefix) |
0271611e LT |
14 | { |
15 | int i; | |
16 | unsigned nr; | |
32637cdf | 17 | unsigned int version; |
0271611e | 18 | static unsigned int top_index[256]; |
88a09a55 | 19 | unsigned hashsz; |
20 | const char *hash_name = NULL; | |
21 | int hash_algo; | |
22 | const struct option show_index_options[] = { | |
23 | OPT_STRING(0, "object-format", &hash_name, N_("hash-algorithm"), | |
24 | N_("specify the hash algorithm to use")), | |
25 | OPT_END() | |
26 | }; | |
27 | ||
28 | argc = parse_options(argc, argv, prefix, show_index_options, show_index_usage, 0); | |
29 | ||
30 | if (hash_name) { | |
31 | hash_algo = hash_algo_by_name(hash_name); | |
32 | if (hash_algo == GIT_HASH_UNKNOWN) | |
33 | die(_("Unknown hash algorithm")); | |
34 | repo_set_hash_algo(the_repository, hash_algo); | |
35 | } | |
36 | ||
37 | hashsz = the_hash_algo->rawsz; | |
0271611e | 38 | |
32637cdf NP |
39 | if (fread(top_index, 2 * 4, 1, stdin) != 1) |
40 | die("unable to read header"); | |
41 | if (top_index[0] == htonl(PACK_IDX_SIGNATURE)) { | |
42 | version = ntohl(top_index[1]); | |
43 | if (version < 2 || version > 2) | |
44 | die("unknown index version"); | |
45 | if (fread(top_index, 256 * 4, 1, stdin) != 1) | |
46 | die("unable to read index"); | |
47 | } else { | |
48 | version = 1; | |
49 | if (fread(&top_index[2], 254 * 4, 1, stdin) != 1) | |
50 | die("unable to read index"); | |
51 | } | |
0271611e LT |
52 | nr = 0; |
53 | for (i = 0; i < 256; i++) { | |
54 | unsigned n = ntohl(top_index[i]); | |
55 | if (n < nr) | |
56 | die("corrupt index file"); | |
57 | nr = n; | |
58 | } | |
32637cdf NP |
59 | if (version == 1) { |
60 | for (i = 0; i < nr; i++) { | |
7962e046 | 61 | unsigned int offset, entry[(GIT_MAX_RAWSZ + 4) / sizeof(unsigned int)]; |
0271611e | 62 | |
7962e046 | 63 | if (fread(entry, 4 + hashsz, 1, stdin) != 1) |
32637cdf NP |
64 | die("unable to read entry %u/%u", i, nr); |
65 | offset = ntohl(entry[0]); | |
be8e172e | 66 | printf("%u %s\n", offset, hash_to_hex((void *)(entry+1))); |
32637cdf NP |
67 | } |
68 | } else { | |
69 | unsigned off64_nr = 0; | |
70 | struct { | |
7962e046 | 71 | struct object_id oid; |
32637cdf NP |
72 | uint32_t crc; |
73 | uint32_t off; | |
b32fa95f JK |
74 | } *entries; |
75 | ALLOC_ARRAY(entries, nr); | |
dd15f4f4 | 76 | for (i = 0; i < nr; i++) { |
7962e046 | 77 | if (fread(entries[i].oid.hash, hashsz, 1, stdin) != 1) |
32637cdf | 78 | die("unable to read sha1 %u/%u", i, nr); |
dd15f4f4 | 79 | entries[i].oid.algo = hash_algo_by_ptr(the_hash_algo); |
80 | } | |
32637cdf NP |
81 | for (i = 0; i < nr; i++) |
82 | if (fread(&entries[i].crc, 4, 1, stdin) != 1) | |
83 | die("unable to read crc %u/%u", i, nr); | |
84 | for (i = 0; i < nr; i++) | |
85 | if (fread(&entries[i].off, 4, 1, stdin) != 1) | |
86 | die("unable to read 32b offset %u/%u", i, nr); | |
87 | for (i = 0; i < nr; i++) { | |
88 | uint64_t offset; | |
89 | uint32_t off = ntohl(entries[i].off); | |
90 | if (!(off & 0x80000000)) { | |
91 | offset = off; | |
92 | } else { | |
93 | uint32_t off64[2]; | |
94 | if ((off & 0x7fffffff) != off64_nr) | |
95 | die("inconsistent 64b offset index"); | |
96 | if (fread(off64, 8, 1, stdin) != 1) | |
97 | die("unable to read 64b offset %u", off64_nr); | |
98 | offset = (((uint64_t)ntohl(off64[0])) << 32) | | |
99 | ntohl(off64[1]); | |
100 | off64_nr++; | |
101 | } | |
6e1c2344 RJ |
102 | printf("%" PRIuMAX " %s (%08"PRIx32")\n", |
103 | (uintmax_t) offset, | |
7962e046 | 104 | oid_to_hex(&entries[i].oid), |
32637cdf NP |
105 | ntohl(entries[i].crc)); |
106 | } | |
107 | free(entries); | |
0271611e LT |
108 | } |
109 | return 0; | |
110 | } |