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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 | 11 | #include "parse-options.h" |
e5fba602 CP |
12 | #include "diff.h" |
13 | #include "userdiff.h" | |
15d8e565 MB |
14 | |
15 | #define BATCH 1 | |
16 | #define BATCH_CHECK 2 | |
a0f15fa5 | 17 | |
eddd1c8c | 18 | static void pprint_tag(const unsigned char *sha1, const char *buf, unsigned long size) |
a0f15fa5 JH |
19 | { |
20 | /* the parser in tag.c is useless here. */ | |
21 | const char *endp = buf + size; | |
22 | const char *cp = buf; | |
23 | ||
24 | while (cp < endp) { | |
25 | char c = *cp++; | |
26 | if (c != '\n') | |
27 | continue; | |
28 | if (7 <= endp - cp && !memcmp("tagger ", cp, 7)) { | |
29 | const char *tagger = cp; | |
30 | ||
31 | /* Found the tagger line. Copy out the contents | |
32 | * of the buffer so far. | |
33 | */ | |
7230e6d0 | 34 | write_or_die(1, buf, cp - buf); |
a0f15fa5 JH |
35 | |
36 | /* | |
37 | * Do something intelligent, like pretty-printing | |
38 | * the date. | |
39 | */ | |
40 | while (cp < endp) { | |
41 | if (*cp++ == '\n') { | |
42 | /* tagger to cp is a line | |
43 | * that has ident and time. | |
44 | */ | |
45 | const char *sp = tagger; | |
46 | char *ep; | |
47 | unsigned long date; | |
48 | long tz; | |
49 | while (sp < cp && *sp != '>') | |
50 | sp++; | |
51 | if (sp == cp) { | |
52 | /* give up */ | |
7230e6d0 | 53 | write_or_die(1, tagger, |
a0f15fa5 JH |
54 | cp - tagger); |
55 | break; | |
56 | } | |
57 | while (sp < cp && | |
58 | !('0' <= *sp && *sp <= '9')) | |
59 | sp++; | |
7230e6d0 | 60 | write_or_die(1, tagger, sp - tagger); |
a0f15fa5 JH |
61 | date = strtoul(sp, &ep, 10); |
62 | tz = strtol(ep, NULL, 10); | |
9a8e35e9 | 63 | sp = show_date(date, tz, 0); |
7230e6d0 | 64 | write_or_die(1, sp, strlen(sp)); |
a0f15fa5 JH |
65 | xwrite(1, "\n", 1); |
66 | break; | |
67 | } | |
68 | } | |
69 | break; | |
70 | } | |
71 | if (cp < endp && *cp == '\n') | |
72 | /* end of header */ | |
73 | break; | |
74 | } | |
75 | /* At this point, we have copied out the header up to the end of | |
76 | * the tagger line and cp points at one past \n. It could be the | |
77 | * next header line after the tagger line, or it could be another | |
78 | * \n that marks the end of the headers. We need to copy out the | |
79 | * remainder as is. | |
80 | */ | |
81 | if (cp < endp) | |
7230e6d0 | 82 | write_or_die(1, cp, endp - cp); |
a0f15fa5 | 83 | } |
e83c5163 | 84 | |
9cf71b17 | 85 | static int cat_one_file(int opt, const char *exp_type, const char *obj_name) |
e83c5163 LT |
86 | { |
87 | unsigned char sha1[20]; | |
21666f1a | 88 | enum object_type type; |
e5fba602 | 89 | char *buf; |
e83c5163 | 90 | unsigned long size; |
e5fba602 | 91 | struct object_context obj_context; |
2b6854c8 | 92 | |
e5fba602 | 93 | if (get_sha1_with_context(obj_name, sha1, &obj_context)) |
2b6854c8 | 94 | die("Not a valid object name %s", obj_name); |
7950571a | 95 | |
7950571a PA |
96 | buf = NULL; |
97 | switch (opt) { | |
98 | case 't': | |
21666f1a NP |
99 | type = sha1_object_info(sha1, NULL); |
100 | if (type > 0) { | |
101 | printf("%s\n", typename(type)); | |
f2a06330 | 102 | return 0; |
11e7d5c5 | 103 | } |
7950571a PA |
104 | break; |
105 | ||
106 | case 's': | |
21666f1a NP |
107 | type = sha1_object_info(sha1, &size); |
108 | if (type > 0) { | |
7950571a PA |
109 | printf("%lu\n", size); |
110 | return 0; | |
111 | } | |
112 | break; | |
113 | ||
114 | case 'e': | |
115 | return !has_sha1_file(sha1); | |
116 | ||
a0f15fa5 | 117 | case 'p': |
21666f1a NP |
118 | type = sha1_object_info(sha1, NULL); |
119 | if (type < 0) | |
2b6854c8 | 120 | die("Not a valid object name %s", obj_name); |
a0f15fa5 JH |
121 | |
122 | /* custom pretty-print here */ | |
2b6854c8 | 123 | if (type == OBJ_TREE) { |
66dbfd55 GV |
124 | const char *ls_args[3] = { NULL }; |
125 | ls_args[0] = "ls-tree"; | |
126 | ls_args[1] = obj_name; | |
2b6854c8 SP |
127 | return cmd_ls_tree(2, ls_args, NULL); |
128 | } | |
a0f15fa5 | 129 | |
21666f1a | 130 | buf = read_sha1_file(sha1, &type, &size); |
a0f15fa5 | 131 | if (!buf) |
2b6854c8 | 132 | die("Cannot read object %s", obj_name); |
21666f1a | 133 | if (type == OBJ_TAG) { |
eddd1c8c DR |
134 | pprint_tag(sha1, buf, size); |
135 | return 0; | |
136 | } | |
a0f15fa5 JH |
137 | |
138 | /* otherwise just spit out the data */ | |
139 | break; | |
e5fba602 CP |
140 | |
141 | case 'c': | |
142 | if (!obj_context.path[0]) | |
143 | die("git cat-file --textconv %s: <object> must be <sha1:path>", | |
144 | obj_name); | |
145 | ||
90064710 | 146 | if (!textconv_object(obj_context.path, obj_context.mode, sha1, &buf, &size)) |
e5fba602 CP |
147 | die("git cat-file --textconv: unable to run textconv on %s", |
148 | obj_name); | |
149 | break; | |
150 | ||
7950571a | 151 | case 0: |
2b6854c8 | 152 | buf = read_object_with_reference(sha1, exp_type, &size, NULL); |
7950571a PA |
153 | break; |
154 | ||
155 | default: | |
d7530708 | 156 | die("git cat-file: unknown option: %s", exp_type); |
bf0c6e83 LT |
157 | } |
158 | ||
11e7d5c5 | 159 | if (!buf) |
34baebce | 160 | die("git cat-file %s: bad file", obj_name); |
11e7d5c5 | 161 | |
7230e6d0 | 162 | write_or_die(1, buf, size); |
bf0c6e83 | 163 | return 0; |
e83c5163 | 164 | } |
9cf71b17 | 165 | |
a8128ed6 | 166 | static int batch_one_object(const char *obj_name, int print_contents) |
05d5667f AR |
167 | { |
168 | unsigned char sha1[20]; | |
3c076dbe | 169 | enum object_type type = 0; |
05d5667f | 170 | unsigned long size; |
a8128ed6 | 171 | void *contents = contents; |
05d5667f AR |
172 | |
173 | if (!obj_name) | |
174 | return 1; | |
175 | ||
176 | if (get_sha1(obj_name, sha1)) { | |
177 | printf("%s missing\n", obj_name); | |
422b2063 | 178 | fflush(stdout); |
05d5667f AR |
179 | return 0; |
180 | } | |
181 | ||
15d8e565 | 182 | if (print_contents == BATCH) |
a8128ed6 AR |
183 | contents = read_sha1_file(sha1, &type, &size); |
184 | else | |
185 | type = sha1_object_info(sha1, &size); | |
186 | ||
3c076dbe LW |
187 | if (type <= 0) { |
188 | printf("%s missing\n", obj_name); | |
189 | fflush(stdout); | |
190 | return 0; | |
191 | } | |
05d5667f AR |
192 | |
193 | printf("%s %s %lu\n", sha1_to_hex(sha1), typename(type), size); | |
a8128ed6 AR |
194 | fflush(stdout); |
195 | ||
15d8e565 | 196 | if (print_contents == BATCH) { |
a8128ed6 AR |
197 | write_or_die(1, contents, size); |
198 | printf("\n"); | |
199 | fflush(stdout); | |
5b8a94b1 | 200 | free(contents); |
a8128ed6 | 201 | } |
05d5667f AR |
202 | |
203 | return 0; | |
204 | } | |
205 | ||
a8128ed6 | 206 | static int batch_objects(int print_contents) |
05d5667f | 207 | { |
f285a2d7 | 208 | struct strbuf buf = STRBUF_INIT; |
05d5667f | 209 | |
05d5667f | 210 | while (strbuf_getline(&buf, stdin, '\n') != EOF) { |
a8128ed6 | 211 | int error = batch_one_object(buf.buf, print_contents); |
05d5667f AR |
212 | if (error) |
213 | return error; | |
214 | } | |
215 | ||
216 | return 0; | |
217 | } | |
218 | ||
15d8e565 | 219 | static const char * const cat_file_usage[] = { |
e5fba602 | 220 | "git cat-file (-t|-s|-e|-p|<type>|--textconv) <object>", |
0e5168fd | 221 | "git cat-file (--batch|--batch-check) < <list_of_objects>", |
15d8e565 MB |
222 | NULL |
223 | }; | |
4814dbe8 | 224 | |
e5fba602 CP |
225 | static int git_cat_file_config(const char *var, const char *value, void *cb) |
226 | { | |
227 | switch (userdiff_config(var, value)) { | |
228 | case 0: | |
229 | break; | |
230 | case -1: | |
231 | return -1; | |
232 | default: | |
233 | return 0; | |
234 | } | |
235 | ||
236 | return git_default_config(var, value, cb); | |
237 | } | |
238 | ||
9cf71b17 AR |
239 | int cmd_cat_file(int argc, const char **argv, const char *prefix) |
240 | { | |
15d8e565 | 241 | int opt = 0, batch = 0; |
4814dbe8 | 242 | const char *exp_type = NULL, *obj_name = NULL; |
9cf71b17 | 243 | |
15d8e565 MB |
244 | const struct option options[] = { |
245 | OPT_GROUP("<type> can be one of: blob, tree, commit, tag"), | |
246 | OPT_SET_INT('t', NULL, &opt, "show object type", 't'), | |
247 | OPT_SET_INT('s', NULL, &opt, "show object size", 's'), | |
248 | OPT_SET_INT('e', NULL, &opt, | |
249 | "exit with zero when there's no error", 'e'), | |
250 | OPT_SET_INT('p', NULL, &opt, "pretty-print object's content", 'p'), | |
e5fba602 CP |
251 | OPT_SET_INT(0, "textconv", &opt, |
252 | "for blob objects, run textconv on object's content", 'c'), | |
15d8e565 | 253 | OPT_SET_INT(0, "batch", &batch, |
9517e6b8 JH |
254 | "show info and content of objects fed from the standard input", |
255 | BATCH), | |
15d8e565 | 256 | OPT_SET_INT(0, "batch-check", &batch, |
9517e6b8 | 257 | "show info about objects fed from the standard input", |
15d8e565 MB |
258 | BATCH_CHECK), |
259 | OPT_END() | |
260 | }; | |
a8128ed6 | 261 | |
e5fba602 | 262 | git_config(git_cat_file_config, NULL); |
4814dbe8 | 263 | |
15d8e565 MB |
264 | if (argc != 3 && argc != 2) |
265 | usage_with_options(cat_file_usage, options); | |
4814dbe8 | 266 | |
37782920 | 267 | argc = parse_options(argc, argv, prefix, options, cat_file_usage, 0); |
05d5667f | 268 | |
15d8e565 MB |
269 | if (opt) { |
270 | if (argc == 1) | |
271 | obj_name = argv[0]; | |
272 | else | |
273 | usage_with_options(cat_file_usage, options); | |
274 | } | |
275 | if (!opt && !batch) { | |
276 | if (argc == 2) { | |
277 | exp_type = argv[0]; | |
278 | obj_name = argv[1]; | |
279 | } else | |
280 | usage_with_options(cat_file_usage, options); | |
281 | } | |
282 | if (batch && (opt || argc)) { | |
283 | usage_with_options(cat_file_usage, options); | |
9cf71b17 AR |
284 | } |
285 | ||
15d8e565 | 286 | if (batch) |
a8128ed6 | 287 | return batch_objects(batch); |
05d5667f | 288 | |
9cf71b17 AR |
289 | return cat_one_file(opt, exp_type, obj_name); |
290 | } |