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Commit | Line | Data |
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8bc9a0c7 LT |
1 | /* |
2 | * GIT - The information manager from hell | |
3 | * | |
4 | * Copyright (C) Linus Torvalds, 2005 | |
5 | */ | |
e83c5163 | 6 | #include "cache.h" |
a0f15fa5 | 7 | #include "exec_cmd.h" |
8e440259 PE |
8 | #include "tag.h" |
9 | #include "tree.h" | |
f81daefe | 10 | #include "builtin.h" |
15d8e565 MB |
11 | #include "parse-options.h" |
12 | ||
13 | #define BATCH 1 | |
14 | #define BATCH_CHECK 2 | |
a0f15fa5 | 15 | |
eddd1c8c | 16 | static void pprint_tag(const unsigned char *sha1, const char *buf, unsigned long size) |
a0f15fa5 JH |
17 | { |
18 | /* the parser in tag.c is useless here. */ | |
19 | const char *endp = buf + size; | |
20 | const char *cp = buf; | |
21 | ||
22 | while (cp < endp) { | |
23 | char c = *cp++; | |
24 | if (c != '\n') | |
25 | continue; | |
26 | if (7 <= endp - cp && !memcmp("tagger ", cp, 7)) { | |
27 | const char *tagger = cp; | |
28 | ||
29 | /* Found the tagger line. Copy out the contents | |
30 | * of the buffer so far. | |
31 | */ | |
7230e6d0 | 32 | write_or_die(1, buf, cp - buf); |
a0f15fa5 JH |
33 | |
34 | /* | |
35 | * Do something intelligent, like pretty-printing | |
36 | * the date. | |
37 | */ | |
38 | while (cp < endp) { | |
39 | if (*cp++ == '\n') { | |
40 | /* tagger to cp is a line | |
41 | * that has ident and time. | |
42 | */ | |
43 | const char *sp = tagger; | |
44 | char *ep; | |
45 | unsigned long date; | |
46 | long tz; | |
47 | while (sp < cp && *sp != '>') | |
48 | sp++; | |
49 | if (sp == cp) { | |
50 | /* give up */ | |
7230e6d0 | 51 | write_or_die(1, tagger, |
a0f15fa5 JH |
52 | cp - tagger); |
53 | break; | |
54 | } | |
55 | while (sp < cp && | |
56 | !('0' <= *sp && *sp <= '9')) | |
57 | sp++; | |
7230e6d0 | 58 | write_or_die(1, tagger, sp - tagger); |
a0f15fa5 JH |
59 | date = strtoul(sp, &ep, 10); |
60 | tz = strtol(ep, NULL, 10); | |
9a8e35e9 | 61 | sp = show_date(date, tz, 0); |
7230e6d0 | 62 | write_or_die(1, sp, strlen(sp)); |
a0f15fa5 JH |
63 | xwrite(1, "\n", 1); |
64 | break; | |
65 | } | |
66 | } | |
67 | break; | |
68 | } | |
69 | if (cp < endp && *cp == '\n') | |
70 | /* end of header */ | |
71 | break; | |
72 | } | |
73 | /* At this point, we have copied out the header up to the end of | |
74 | * the tagger line and cp points at one past \n. It could be the | |
75 | * next header line after the tagger line, or it could be another | |
76 | * \n that marks the end of the headers. We need to copy out the | |
77 | * remainder as is. | |
78 | */ | |
79 | if (cp < endp) | |
7230e6d0 | 80 | write_or_die(1, cp, endp - cp); |
a0f15fa5 | 81 | } |
e83c5163 | 82 | |
9cf71b17 | 83 | static int cat_one_file(int opt, const char *exp_type, const char *obj_name) |
e83c5163 LT |
84 | { |
85 | unsigned char sha1[20]; | |
21666f1a | 86 | enum object_type type; |
e83c5163 LT |
87 | void *buf; |
88 | unsigned long size; | |
2b6854c8 SP |
89 | |
90 | if (get_sha1(obj_name, sha1)) | |
91 | die("Not a valid object name %s", obj_name); | |
7950571a | 92 | |
7950571a PA |
93 | buf = NULL; |
94 | switch (opt) { | |
95 | case 't': | |
21666f1a NP |
96 | type = sha1_object_info(sha1, NULL); |
97 | if (type > 0) { | |
98 | printf("%s\n", typename(type)); | |
f2a06330 | 99 | return 0; |
11e7d5c5 | 100 | } |
7950571a PA |
101 | break; |
102 | ||
103 | case 's': | |
21666f1a NP |
104 | type = sha1_object_info(sha1, &size); |
105 | if (type > 0) { | |
7950571a PA |
106 | printf("%lu\n", size); |
107 | return 0; | |
108 | } | |
109 | break; | |
110 | ||
111 | case 'e': | |
112 | return !has_sha1_file(sha1); | |
113 | ||
a0f15fa5 | 114 | case 'p': |
21666f1a NP |
115 | type = sha1_object_info(sha1, NULL); |
116 | if (type < 0) | |
2b6854c8 | 117 | die("Not a valid object name %s", obj_name); |
a0f15fa5 JH |
118 | |
119 | /* custom pretty-print here */ | |
2b6854c8 SP |
120 | if (type == OBJ_TREE) { |
121 | const char *ls_args[3] = {"ls-tree", obj_name, NULL}; | |
122 | return cmd_ls_tree(2, ls_args, NULL); | |
123 | } | |
a0f15fa5 | 124 | |
21666f1a | 125 | buf = read_sha1_file(sha1, &type, &size); |
a0f15fa5 | 126 | if (!buf) |
2b6854c8 | 127 | die("Cannot read object %s", obj_name); |
21666f1a | 128 | if (type == OBJ_TAG) { |
eddd1c8c DR |
129 | pprint_tag(sha1, buf, size); |
130 | return 0; | |
131 | } | |
a0f15fa5 JH |
132 | |
133 | /* otherwise just spit out the data */ | |
134 | break; | |
7950571a | 135 | case 0: |
2b6854c8 | 136 | buf = read_object_with_reference(sha1, exp_type, &size, NULL); |
7950571a PA |
137 | break; |
138 | ||
139 | default: | |
d7530708 | 140 | die("git cat-file: unknown option: %s", exp_type); |
bf0c6e83 LT |
141 | } |
142 | ||
11e7d5c5 | 143 | if (!buf) |
34baebce | 144 | die("git cat-file %s: bad file", obj_name); |
11e7d5c5 | 145 | |
7230e6d0 | 146 | write_or_die(1, buf, size); |
bf0c6e83 | 147 | return 0; |
e83c5163 | 148 | } |
9cf71b17 | 149 | |
a8128ed6 | 150 | static int batch_one_object(const char *obj_name, int print_contents) |
05d5667f AR |
151 | { |
152 | unsigned char sha1[20]; | |
3c076dbe | 153 | enum object_type type = 0; |
05d5667f | 154 | unsigned long size; |
a8128ed6 | 155 | void *contents = contents; |
05d5667f AR |
156 | |
157 | if (!obj_name) | |
158 | return 1; | |
159 | ||
160 | if (get_sha1(obj_name, sha1)) { | |
161 | printf("%s missing\n", obj_name); | |
422b2063 | 162 | fflush(stdout); |
05d5667f AR |
163 | return 0; |
164 | } | |
165 | ||
15d8e565 | 166 | if (print_contents == BATCH) |
a8128ed6 AR |
167 | contents = read_sha1_file(sha1, &type, &size); |
168 | else | |
169 | type = sha1_object_info(sha1, &size); | |
170 | ||
3c076dbe LW |
171 | if (type <= 0) { |
172 | printf("%s missing\n", obj_name); | |
173 | fflush(stdout); | |
174 | return 0; | |
175 | } | |
05d5667f AR |
176 | |
177 | printf("%s %s %lu\n", sha1_to_hex(sha1), typename(type), size); | |
a8128ed6 AR |
178 | fflush(stdout); |
179 | ||
15d8e565 | 180 | if (print_contents == BATCH) { |
a8128ed6 AR |
181 | write_or_die(1, contents, size); |
182 | printf("\n"); | |
183 | fflush(stdout); | |
5b8a94b1 | 184 | free(contents); |
a8128ed6 | 185 | } |
05d5667f AR |
186 | |
187 | return 0; | |
188 | } | |
189 | ||
a8128ed6 | 190 | static int batch_objects(int print_contents) |
05d5667f | 191 | { |
f285a2d7 | 192 | struct strbuf buf = STRBUF_INIT; |
05d5667f | 193 | |
05d5667f | 194 | while (strbuf_getline(&buf, stdin, '\n') != EOF) { |
a8128ed6 | 195 | int error = batch_one_object(buf.buf, print_contents); |
05d5667f AR |
196 | if (error) |
197 | return error; | |
198 | } | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
15d8e565 | 203 | static const char * const cat_file_usage[] = { |
0e5168fd JK |
204 | "git cat-file (-t|-s|-e|-p|<type>) <object>", |
205 | "git cat-file (--batch|--batch-check) < <list_of_objects>", | |
15d8e565 MB |
206 | NULL |
207 | }; | |
4814dbe8 | 208 | |
9cf71b17 AR |
209 | int cmd_cat_file(int argc, const char **argv, const char *prefix) |
210 | { | |
15d8e565 | 211 | int opt = 0, batch = 0; |
4814dbe8 | 212 | const char *exp_type = NULL, *obj_name = NULL; |
9cf71b17 | 213 | |
15d8e565 MB |
214 | const struct option options[] = { |
215 | OPT_GROUP("<type> can be one of: blob, tree, commit, tag"), | |
216 | OPT_SET_INT('t', NULL, &opt, "show object type", 't'), | |
217 | OPT_SET_INT('s', NULL, &opt, "show object size", 's'), | |
218 | OPT_SET_INT('e', NULL, &opt, | |
219 | "exit with zero when there's no error", 'e'), | |
220 | OPT_SET_INT('p', NULL, &opt, "pretty-print object's content", 'p'), | |
221 | OPT_SET_INT(0, "batch", &batch, | |
222 | "show info and content of objects feeded on stdin", BATCH), | |
223 | OPT_SET_INT(0, "batch-check", &batch, | |
224 | "show info about objects feeded on stdin", | |
225 | BATCH_CHECK), | |
226 | OPT_END() | |
227 | }; | |
a8128ed6 | 228 | |
9bd81e42 | 229 | git_config(git_default_config, NULL); |
4814dbe8 | 230 | |
15d8e565 MB |
231 | if (argc != 3 && argc != 2) |
232 | usage_with_options(cat_file_usage, options); | |
4814dbe8 | 233 | |
37782920 | 234 | argc = parse_options(argc, argv, prefix, options, cat_file_usage, 0); |
05d5667f | 235 | |
15d8e565 MB |
236 | if (opt) { |
237 | if (argc == 1) | |
238 | obj_name = argv[0]; | |
239 | else | |
240 | usage_with_options(cat_file_usage, options); | |
241 | } | |
242 | if (!opt && !batch) { | |
243 | if (argc == 2) { | |
244 | exp_type = argv[0]; | |
245 | obj_name = argv[1]; | |
246 | } else | |
247 | usage_with_options(cat_file_usage, options); | |
248 | } | |
249 | if (batch && (opt || argc)) { | |
250 | usage_with_options(cat_file_usage, options); | |
9cf71b17 AR |
251 | } |
252 | ||
15d8e565 | 253 | if (batch) |
a8128ed6 | 254 | return batch_objects(batch); |
05d5667f | 255 | |
9cf71b17 AR |
256 | return cat_one_file(opt, exp_type, obj_name); |
257 | } |