Make the MSVC projects use PDB/IDB files named after the project
[git/dscho.git] / builtin-cat-file.c
blob590684200854ad6a71653f30d494eb191fd4a324
1 /*
2 * GIT - The information manager from hell
4 * Copyright (C) Linus Torvalds, 2005
5 */
6 #include "cache.h"
7 #include "exec_cmd.h"
8 #include "tag.h"
9 #include "tree.h"
10 #include "builtin.h"
11 #include "parse-options.h"
13 #define BATCH 1
14 #define BATCH_CHECK 2
16 static void pprint_tag(const unsigned char *sha1, const char *buf, unsigned long size)
18 /* the parser in tag.c is useless here. */
19 const char *endp = buf + size;
20 const char *cp = buf;
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;
29 /* Found the tagger line. Copy out the contents
30 * of the buffer so far.
32 write_or_die(1, buf, cp - buf);
35 * Do something intelligent, like pretty-printing
36 * the date.
38 while (cp < endp) {
39 if (*cp++ == '\n') {
40 /* tagger to cp is a line
41 * that has ident and time.
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 */
51 write_or_die(1, tagger,
52 cp - tagger);
53 break;
55 while (sp < cp &&
56 !('0' <= *sp && *sp <= '9'))
57 sp++;
58 write_or_die(1, tagger, sp - tagger);
59 date = strtoul(sp, &ep, 10);
60 tz = strtol(ep, NULL, 10);
61 sp = show_date(date, tz, 0);
62 write_or_die(1, sp, strlen(sp));
63 xwrite(1, "\n", 1);
64 break;
67 break;
69 if (cp < endp && *cp == '\n')
70 /* end of header */
71 break;
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.
79 if (cp < endp)
80 write_or_die(1, cp, endp - cp);
83 static int cat_one_file(int opt, const char *exp_type, const char *obj_name)
85 unsigned char sha1[20];
86 enum object_type type;
87 void *buf;
88 unsigned long size;
90 if (get_sha1(obj_name, sha1))
91 die("Not a valid object name %s", obj_name);
93 buf = NULL;
94 switch (opt) {
95 case 't':
96 type = sha1_object_info(sha1, NULL);
97 if (type > 0) {
98 printf("%s\n", typename(type));
99 return 0;
101 break;
103 case 's':
104 type = sha1_object_info(sha1, &size);
105 if (type > 0) {
106 printf("%lu\n", size);
107 return 0;
109 break;
111 case 'e':
112 return !has_sha1_file(sha1);
114 case 'p':
115 type = sha1_object_info(sha1, NULL);
116 if (type < 0)
117 die("Not a valid object name %s", obj_name);
119 /* custom pretty-print here */
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);
125 buf = read_sha1_file(sha1, &type, &size);
126 if (!buf)
127 die("Cannot read object %s", obj_name);
128 if (type == OBJ_TAG) {
129 pprint_tag(sha1, buf, size);
130 return 0;
133 /* otherwise just spit out the data */
134 break;
135 case 0:
136 buf = read_object_with_reference(sha1, exp_type, &size, NULL);
137 break;
139 default:
140 die("git cat-file: unknown option: %s", exp_type);
143 if (!buf)
144 die("git cat-file %s: bad file", obj_name);
146 write_or_die(1, buf, size);
147 return 0;
150 static int batch_one_object(const char *obj_name, int print_contents)
152 unsigned char sha1[20];
153 enum object_type type = 0;
154 unsigned long size;
155 void *contents = contents;
157 if (!obj_name)
158 return 1;
160 if (get_sha1(obj_name, sha1)) {
161 printf("%s missing\n", obj_name);
162 fflush(stdout);
163 return 0;
166 if (print_contents == BATCH)
167 contents = read_sha1_file(sha1, &type, &size);
168 else
169 type = sha1_object_info(sha1, &size);
171 if (type <= 0) {
172 printf("%s missing\n", obj_name);
173 fflush(stdout);
174 return 0;
177 printf("%s %s %lu\n", sha1_to_hex(sha1), typename(type), size);
178 fflush(stdout);
180 if (print_contents == BATCH) {
181 write_or_die(1, contents, size);
182 printf("\n");
183 fflush(stdout);
184 free(contents);
187 return 0;
190 static int batch_objects(int print_contents)
192 struct strbuf buf = STRBUF_INIT;
194 while (strbuf_getline(&buf, stdin, '\n') != EOF) {
195 int error = batch_one_object(buf.buf, print_contents);
196 if (error)
197 return error;
200 return 0;
203 static const char * const cat_file_usage[] = {
204 "git cat-file (-t|-s|-e|-p|<type>) <object>",
205 "git cat-file (--batch|--batch-check) < <list_of_objects>",
206 NULL
209 int cmd_cat_file(int argc, const char **argv, const char *prefix)
211 int opt = 0, batch = 0;
212 const char *exp_type = NULL, *obj_name = NULL;
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()
229 git_config(git_default_config, NULL);
231 if (argc != 3 && argc != 2)
232 usage_with_options(cat_file_usage, options);
234 argc = parse_options(argc, argv, prefix, options, cat_file_usage, 0);
236 if (opt) {
237 if (argc == 1)
238 obj_name = argv[0];
239 else
240 usage_with_options(cat_file_usage, options);
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);
249 if (batch && (opt || argc)) {
250 usage_with_options(cat_file_usage, options);
253 if (batch)
254 return batch_objects(batch);
256 return cat_one_file(opt, exp_type, obj_name);