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Commit | Line | Data |
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7672db20 BL |
1 | /* |
2 | * GIT - The information manager from hell | |
3 | * | |
4 | * Copyright (C) Linus Torvalds, 2005 | |
8e440259 | 5 | * Copyright (C) Junio C Hamano, 2005 |
7672db20 | 6 | */ |
c2e86add | 7 | #include "builtin.h" |
b2141fc1 | 8 | #include "config.h" |
cbd53a21 | 9 | #include "object-store.h" |
8e440259 | 10 | #include "blob.h" |
d8ee4832 | 11 | #include "quote.h" |
548601ad | 12 | #include "parse-options.h" |
d807c4a0 | 13 | #include "exec-cmd.h" |
7672db20 | 14 | |
5ba9a93b JH |
15 | /* |
16 | * This is to create corrupt objects for debugging and as such it | |
17 | * needs to bypass the data conversion performed by, and the type | |
18 | * limitation imposed by, index_fd() and its callees. | |
19 | */ | |
eab8bf29 | 20 | static int hash_literally(struct object_id *oid, int fd, const char *type, unsigned flags) |
5ba9a93b JH |
21 | { |
22 | struct strbuf buf = STRBUF_INIT; | |
23 | int ret; | |
24 | ||
25 | if (strbuf_read(&buf, fd, 4096) < 0) | |
26 | ret = -1; | |
5ba9a93b | 27 | else |
1752cbbc PO |
28 | ret = hash_object_file_literally(buf.buf, buf.len, type, oid, |
29 | flags); | |
5ba9a93b JH |
30 | strbuf_release(&buf); |
31 | return ret; | |
32 | } | |
33 | ||
34 | static void hash_fd(int fd, const char *type, const char *path, unsigned flags, | |
35 | int literally) | |
7672db20 | 36 | { |
7672db20 | 37 | struct stat st; |
eab8bf29 | 38 | struct object_id oid; |
c4ce46fc | 39 | |
43df4f86 | 40 | if (fstat(fd, &st) < 0 || |
5ba9a93b | 41 | (literally |
eab8bf29 | 42 | ? hash_literally(&oid, fd, type, flags) |
f8adbec9 NTND |
43 | : index_fd(the_repository->index, &oid, fd, &st, |
44 | type_from_string(type), path, flags))) | |
17b787f6 | 45 | die((flags & HASH_WRITE_OBJECT) |
7672db20 BL |
46 | ? "Unable to add %s to database" |
47 | : "Unable to hash %s", path); | |
eab8bf29 | 48 | printf("%s\n", oid_to_hex(&oid)); |
d8ee4832 | 49 | maybe_flush_or_die(stdout, "hash to stdout"); |
7672db20 BL |
50 | } |
51 | ||
17b787f6 | 52 | static void hash_object(const char *path, const char *type, const char *vpath, |
5ba9a93b | 53 | unsigned flags, int literally) |
024510c8 | 54 | { |
43df4f86 DP |
55 | int fd; |
56 | fd = open(path, O_RDONLY); | |
57 | if (fd < 0) | |
0721c314 | 58 | die_errno("Cannot open '%s'", path); |
5ba9a93b | 59 | hash_fd(fd, type, vpath, flags, literally); |
024510c8 DB |
60 | } |
61 | ||
5ba9a93b JH |
62 | static void hash_stdin_paths(const char *type, int no_filters, unsigned flags, |
63 | int literally) | |
d8ee4832 | 64 | { |
0d4cc1b4 JK |
65 | struct strbuf buf = STRBUF_INIT; |
66 | struct strbuf unquoted = STRBUF_INIT; | |
d8ee4832 | 67 | |
c0353c78 | 68 | while (strbuf_getline(&buf, stdin) != EOF) { |
d8ee4832 | 69 | if (buf.buf[0] == '"') { |
0d4cc1b4 JK |
70 | strbuf_reset(&unquoted); |
71 | if (unquote_c_style(&unquoted, buf.buf, NULL)) | |
d8ee4832 | 72 | die("line is badly quoted"); |
0d4cc1b4 | 73 | strbuf_swap(&buf, &unquoted); |
d8ee4832 | 74 | } |
5ba9a93b JH |
75 | hash_object(buf.buf, type, no_filters ? NULL : buf.buf, flags, |
76 | literally); | |
d8ee4832 AR |
77 | } |
78 | strbuf_release(&buf); | |
0d4cc1b4 | 79 | strbuf_release(&unquoted); |
d8ee4832 AR |
80 | } |
81 | ||
b28a1ce0 | 82 | int cmd_hash_object(int argc, const char **argv, const char *prefix) |
7672db20 | 83 | { |
b64a9846 | 84 | static const char * const hash_object_usage[] = { |
9c9b4f2f | 85 | N_("git hash-object [-t <type>] [-w] [--path=<file> | --no-filters] [--stdin] [--] <file>..."), |
33e8fc87 | 86 | N_("git hash-object --stdin-paths"), |
b64a9846 JH |
87 | NULL |
88 | }; | |
89 | const char *type = blob_type; | |
90 | int hashstdin = 0; | |
91 | int stdin_paths = 0; | |
b64a9846 | 92 | int no_filters = 0; |
5ba9a93b | 93 | int literally = 0; |
0e94ee94 | 94 | int nongit = 0; |
17b787f6 | 95 | unsigned flags = HASH_FORMAT_CHECK; |
b64a9846 JH |
96 | const char *vpath = NULL; |
97 | const struct option hash_object_options[] = { | |
98 | OPT_STRING('t', NULL, &type, N_("type"), N_("object type")), | |
17b787f6 JH |
99 | OPT_BIT('w', NULL, &flags, N_("write the object into the object database"), |
100 | HASH_WRITE_OBJECT), | |
b64a9846 JH |
101 | OPT_COUNTUP( 0 , "stdin", &hashstdin, N_("read the object from stdin")), |
102 | OPT_BOOL( 0 , "stdin-paths", &stdin_paths, N_("read file names from stdin")), | |
103 | OPT_BOOL( 0 , "no-filters", &no_filters, N_("store file as is without filters")), | |
5ba9a93b | 104 | OPT_BOOL( 0, "literally", &literally, N_("just hash any random garbage to create corrupt objects for debugging Git")), |
b64a9846 JH |
105 | OPT_STRING( 0 , "path", &vpath, N_("file"), N_("process file as it were from this path")), |
106 | OPT_END() | |
107 | }; | |
7672db20 | 108 | int i; |
548601ad DP |
109 | const char *errstr = NULL; |
110 | ||
d64db5b3 | 111 | argc = parse_options(argc, argv, prefix, hash_object_options, |
37782920 | 112 | hash_object_usage, 0); |
548601ad | 113 | |
0e94ee94 | 114 | if (flags & HASH_WRITE_OBJECT) |
548601ad | 115 | prefix = setup_git_directory(); |
0e94ee94 JK |
116 | else |
117 | prefix = setup_git_directory_gently(&nongit); | |
118 | ||
0e94ee94 | 119 | if (vpath && prefix) |
116fb64e | 120 | vpath = xstrdup(prefix_filename(prefix, vpath)); |
d8ee4832 | 121 | |
272459a3 EN |
122 | git_config(git_default_config, NULL); |
123 | ||
548601ad DP |
124 | if (stdin_paths) { |
125 | if (hashstdin) | |
126 | errstr = "Can't use --stdin-paths with --stdin"; | |
127 | else if (argc) | |
128 | errstr = "Can't specify files with --stdin-paths"; | |
39702431 DP |
129 | else if (vpath) |
130 | errstr = "Can't use --stdin-paths with --path"; | |
4a3d85dc DP |
131 | } |
132 | else { | |
133 | if (hashstdin > 1) | |
134 | errstr = "Multiple --stdin arguments are not supported"; | |
135 | if (vpath && no_filters) | |
136 | errstr = "Can't use --path with --no-filters"; | |
548601ad | 137 | } |
548601ad DP |
138 | |
139 | if (errstr) { | |
42fc1139 | 140 | error("%s", errstr); |
548601ad DP |
141 | usage_with_options(hash_object_usage, hash_object_options); |
142 | } | |
d8ee4832 | 143 | |
8a2f5e5b | 144 | if (hashstdin) |
5ba9a93b | 145 | hash_fd(0, type, vpath, flags, literally); |
548601ad DP |
146 | |
147 | for (i = 0 ; i < argc; i++) { | |
148 | const char *arg = argv[i]; | |
a1be47e4 | 149 | char *to_free = NULL; |
548601ad | 150 | |
116fb64e | 151 | if (prefix) |
e4da43b1 | 152 | arg = to_free = prefix_filename(prefix, arg); |
17b787f6 | 153 | hash_object(arg, type, no_filters ? NULL : vpath ? vpath : arg, |
5ba9a93b | 154 | flags, literally); |
a1be47e4 | 155 | free(to_free); |
548601ad DP |
156 | } |
157 | ||
158 | if (stdin_paths) | |
5ba9a93b | 159 | hash_stdin_paths(type, no_filters, flags, literally); |
548601ad | 160 | |
7672db20 BL |
161 | return 0; |
162 | } |