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Commit | Line | Data |
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ff417260 | 1 | #include "builtin.h" |
f394e093 | 2 | #include "gettext.h" |
d1cbe1e6 | 3 | #include "hash.h" |
41771fa4 | 4 | #include "hex.h" |
32637cdf | 5 | #include "pack.h" |
88a09a55 | 6 | #include "parse-options.h" |
d1cbe1e6 | 7 | #include "repository.h" |
0271611e | 8 | |
88a09a55 | 9 | static const char *const show_index_usage[] = { |
10 | "git show-index [--object-format=<hash-algorithm>]", | |
11 | NULL | |
12 | }; | |
03c5c102 | 13 | |
ff417260 | 14 | int cmd_show_index(int argc, const char **argv, const char *prefix) |
0271611e LT |
15 | { |
16 | int i; | |
17 | unsigned nr; | |
32637cdf | 18 | unsigned int version; |
0271611e | 19 | static unsigned int top_index[256]; |
88a09a55 | 20 | unsigned hashsz; |
21 | const char *hash_name = NULL; | |
22 | int hash_algo; | |
23 | const struct option show_index_options[] = { | |
24 | OPT_STRING(0, "object-format", &hash_name, N_("hash-algorithm"), | |
25 | N_("specify the hash algorithm to use")), | |
26 | OPT_END() | |
27 | }; | |
28 | ||
29 | argc = parse_options(argc, argv, prefix, show_index_options, show_index_usage, 0); | |
30 | ||
31 | if (hash_name) { | |
32 | hash_algo = hash_algo_by_name(hash_name); | |
33 | if (hash_algo == GIT_HASH_UNKNOWN) | |
34 | die(_("Unknown hash algorithm")); | |
35 | repo_set_hash_algo(the_repository, hash_algo); | |
36 | } | |
37 | ||
38 | hashsz = the_hash_algo->rawsz; | |
0271611e | 39 | |
32637cdf NP |
40 | if (fread(top_index, 2 * 4, 1, stdin) != 1) |
41 | die("unable to read header"); | |
42 | if (top_index[0] == htonl(PACK_IDX_SIGNATURE)) { | |
43 | version = ntohl(top_index[1]); | |
44 | if (version < 2 || version > 2) | |
45 | die("unknown index version"); | |
46 | if (fread(top_index, 256 * 4, 1, stdin) != 1) | |
47 | die("unable to read index"); | |
48 | } else { | |
49 | version = 1; | |
50 | if (fread(&top_index[2], 254 * 4, 1, stdin) != 1) | |
51 | die("unable to read index"); | |
52 | } | |
0271611e LT |
53 | nr = 0; |
54 | for (i = 0; i < 256; i++) { | |
55 | unsigned n = ntohl(top_index[i]); | |
56 | if (n < nr) | |
57 | die("corrupt index file"); | |
58 | nr = n; | |
59 | } | |
32637cdf NP |
60 | if (version == 1) { |
61 | for (i = 0; i < nr; i++) { | |
7962e046 | 62 | unsigned int offset, entry[(GIT_MAX_RAWSZ + 4) / sizeof(unsigned int)]; |
0271611e | 63 | |
7962e046 | 64 | if (fread(entry, 4 + hashsz, 1, stdin) != 1) |
32637cdf NP |
65 | die("unable to read entry %u/%u", i, nr); |
66 | offset = ntohl(entry[0]); | |
be8e172e | 67 | printf("%u %s\n", offset, hash_to_hex((void *)(entry+1))); |
32637cdf NP |
68 | } |
69 | } else { | |
70 | unsigned off64_nr = 0; | |
71 | struct { | |
7962e046 | 72 | struct object_id oid; |
32637cdf NP |
73 | uint32_t crc; |
74 | uint32_t off; | |
b32fa95f JK |
75 | } *entries; |
76 | ALLOC_ARRAY(entries, nr); | |
dd15f4f4 | 77 | for (i = 0; i < nr; i++) { |
7962e046 | 78 | if (fread(entries[i].oid.hash, hashsz, 1, stdin) != 1) |
32637cdf | 79 | die("unable to read sha1 %u/%u", i, nr); |
dd15f4f4 | 80 | entries[i].oid.algo = hash_algo_by_ptr(the_hash_algo); |
81 | } | |
32637cdf NP |
82 | for (i = 0; i < nr; i++) |
83 | if (fread(&entries[i].crc, 4, 1, stdin) != 1) | |
84 | die("unable to read crc %u/%u", i, nr); | |
85 | for (i = 0; i < nr; i++) | |
86 | if (fread(&entries[i].off, 4, 1, stdin) != 1) | |
87 | die("unable to read 32b offset %u/%u", i, nr); | |
88 | for (i = 0; i < nr; i++) { | |
89 | uint64_t offset; | |
90 | uint32_t off = ntohl(entries[i].off); | |
91 | if (!(off & 0x80000000)) { | |
92 | offset = off; | |
93 | } else { | |
94 | uint32_t off64[2]; | |
95 | if ((off & 0x7fffffff) != off64_nr) | |
96 | die("inconsistent 64b offset index"); | |
97 | if (fread(off64, 8, 1, stdin) != 1) | |
98 | die("unable to read 64b offset %u", off64_nr); | |
99 | offset = (((uint64_t)ntohl(off64[0])) << 32) | | |
100 | ntohl(off64[1]); | |
101 | off64_nr++; | |
102 | } | |
6e1c2344 RJ |
103 | printf("%" PRIuMAX " %s (%08"PRIx32")\n", |
104 | (uintmax_t) offset, | |
7962e046 | 105 | oid_to_hex(&entries[i].oid), |
32637cdf NP |
106 | ntohl(entries[i].crc)); |
107 | } | |
108 | free(entries); | |
0271611e LT |
109 | } |
110 | return 0; | |
111 | } |