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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" |
a0f15fa5 | 11 | |
eddd1c8c | 12 | static void pprint_tag(const unsigned char *sha1, const char *buf, unsigned long size) |
a0f15fa5 JH |
13 | { |
14 | /* the parser in tag.c is useless here. */ | |
15 | const char *endp = buf + size; | |
16 | const char *cp = buf; | |
17 | ||
18 | while (cp < endp) { | |
19 | char c = *cp++; | |
20 | if (c != '\n') | |
21 | continue; | |
22 | if (7 <= endp - cp && !memcmp("tagger ", cp, 7)) { | |
23 | const char *tagger = cp; | |
24 | ||
25 | /* Found the tagger line. Copy out the contents | |
26 | * of the buffer so far. | |
27 | */ | |
7230e6d0 | 28 | write_or_die(1, buf, cp - buf); |
a0f15fa5 JH |
29 | |
30 | /* | |
31 | * Do something intelligent, like pretty-printing | |
32 | * the date. | |
33 | */ | |
34 | while (cp < endp) { | |
35 | if (*cp++ == '\n') { | |
36 | /* tagger to cp is a line | |
37 | * that has ident and time. | |
38 | */ | |
39 | const char *sp = tagger; | |
40 | char *ep; | |
41 | unsigned long date; | |
42 | long tz; | |
43 | while (sp < cp && *sp != '>') | |
44 | sp++; | |
45 | if (sp == cp) { | |
46 | /* give up */ | |
7230e6d0 | 47 | write_or_die(1, tagger, |
a0f15fa5 JH |
48 | cp - tagger); |
49 | break; | |
50 | } | |
51 | while (sp < cp && | |
52 | !('0' <= *sp && *sp <= '9')) | |
53 | sp++; | |
7230e6d0 | 54 | write_or_die(1, tagger, sp - tagger); |
a0f15fa5 JH |
55 | date = strtoul(sp, &ep, 10); |
56 | tz = strtol(ep, NULL, 10); | |
9a8e35e9 | 57 | sp = show_date(date, tz, 0); |
7230e6d0 | 58 | write_or_die(1, sp, strlen(sp)); |
a0f15fa5 JH |
59 | xwrite(1, "\n", 1); |
60 | break; | |
61 | } | |
62 | } | |
63 | break; | |
64 | } | |
65 | if (cp < endp && *cp == '\n') | |
66 | /* end of header */ | |
67 | break; | |
68 | } | |
69 | /* At this point, we have copied out the header up to the end of | |
70 | * the tagger line and cp points at one past \n. It could be the | |
71 | * next header line after the tagger line, or it could be another | |
72 | * \n that marks the end of the headers. We need to copy out the | |
73 | * remainder as is. | |
74 | */ | |
75 | if (cp < endp) | |
7230e6d0 | 76 | write_or_die(1, cp, endp - cp); |
a0f15fa5 | 77 | } |
e83c5163 | 78 | |
a633fca0 | 79 | int cmd_cat_file(int argc, const char **argv, const char *prefix) |
e83c5163 LT |
80 | { |
81 | unsigned char sha1[20]; | |
21666f1a | 82 | enum object_type type; |
e83c5163 LT |
83 | void *buf; |
84 | unsigned long size; | |
7950571a | 85 | int opt; |
2b6854c8 | 86 | const char *exp_type, *obj_name; |
e83c5163 | 87 | |
84a9b58c | 88 | git_config(git_default_config); |
31fff305 | 89 | if (argc != 3) |
a0f15fa5 | 90 | usage("git-cat-file [-t|-s|-e|-p|<type>] <sha1>"); |
2b6854c8 SP |
91 | exp_type = argv[1]; |
92 | obj_name = argv[2]; | |
93 | ||
94 | if (get_sha1(obj_name, sha1)) | |
95 | die("Not a valid object name %s", obj_name); | |
7950571a PA |
96 | |
97 | opt = 0; | |
2b6854c8 SP |
98 | if ( exp_type[0] == '-' ) { |
99 | opt = exp_type[1]; | |
100 | if ( !opt || exp_type[2] ) | |
7950571a PA |
101 | opt = -1; /* Not a single character option */ |
102 | } | |
103 | ||
104 | buf = NULL; | |
105 | switch (opt) { | |
106 | case 't': | |
21666f1a NP |
107 | type = sha1_object_info(sha1, NULL); |
108 | if (type > 0) { | |
109 | printf("%s\n", typename(type)); | |
f2a06330 | 110 | return 0; |
11e7d5c5 | 111 | } |
7950571a PA |
112 | break; |
113 | ||
114 | case 's': | |
21666f1a NP |
115 | type = sha1_object_info(sha1, &size); |
116 | if (type > 0) { | |
7950571a PA |
117 | printf("%lu\n", size); |
118 | return 0; | |
119 | } | |
120 | break; | |
121 | ||
122 | case 'e': | |
123 | return !has_sha1_file(sha1); | |
124 | ||
a0f15fa5 | 125 | case 'p': |
21666f1a NP |
126 | type = sha1_object_info(sha1, NULL); |
127 | if (type < 0) | |
2b6854c8 | 128 | die("Not a valid object name %s", obj_name); |
a0f15fa5 JH |
129 | |
130 | /* custom pretty-print here */ | |
2b6854c8 SP |
131 | if (type == OBJ_TREE) { |
132 | const char *ls_args[3] = {"ls-tree", obj_name, NULL}; | |
133 | return cmd_ls_tree(2, ls_args, NULL); | |
134 | } | |
a0f15fa5 | 135 | |
21666f1a | 136 | buf = read_sha1_file(sha1, &type, &size); |
a0f15fa5 | 137 | if (!buf) |
2b6854c8 | 138 | die("Cannot read object %s", obj_name); |
21666f1a | 139 | if (type == OBJ_TAG) { |
eddd1c8c DR |
140 | pprint_tag(sha1, buf, size); |
141 | return 0; | |
142 | } | |
a0f15fa5 JH |
143 | |
144 | /* otherwise just spit out the data */ | |
145 | break; | |
7950571a | 146 | case 0: |
2b6854c8 | 147 | buf = read_object_with_reference(sha1, exp_type, &size, NULL); |
7950571a PA |
148 | break; |
149 | ||
150 | default: | |
2b6854c8 | 151 | die("git-cat-file: unknown option: %s\n", exp_type); |
bf0c6e83 LT |
152 | } |
153 | ||
11e7d5c5 | 154 | if (!buf) |
2b6854c8 | 155 | die("git-cat-file %s: bad file", obj_name); |
11e7d5c5 | 156 | |
7230e6d0 | 157 | write_or_die(1, buf, size); |
bf0c6e83 | 158 | return 0; |
e83c5163 | 159 | } |