1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
#include "cache.h"
#include "refs.h"
#include "object.h"
#include "tag.h"
static const char show_ref_usage[] = "git show-ref [-q|--quiet] [--verify] [-h|--head] [-d|--dereference] [-s|--hash[=<length>]] [--abbrev[=<length>]] [--tags] [--heads] [--] [pattern*]";
static int deref_tags = 0, show_head = 0, tags_only = 0, heads_only = 0,
found_match = 0, verify = 0, quiet = 0, hash_only = 0, abbrev = 0;
static const char **pattern;
static int show_ref(const char *refname, const unsigned char *sha1, int flag, void *cbdata)
{
struct object *obj;
const char *hex;
unsigned char peeled[20];
if (tags_only || heads_only) {
int match;
match = heads_only && !strncmp(refname, "refs/heads/", 11);
match |= tags_only && !strncmp(refname, "refs/tags/", 10);
if (!match)
return 0;
}
if (pattern) {
int reflen = strlen(refname);
const char **p = pattern, *m;
while ((m = *p++) != NULL) {
int len = strlen(m);
if (len > reflen)
continue;
if (memcmp(m, refname + reflen - len, len))
continue;
if (len == reflen)
goto match;
/* "--verify" requires an exact match */
if (verify)
continue;
if (refname[reflen - len - 1] == '/')
goto match;
}
return 0;
}
match:
found_match++;
/* This changes the semantics slightly that even under quiet we
* detect and return error if the repository is corrupt and
* ref points at a nonexistent object.
*/
if (!has_sha1_file(sha1))
die("git-show-ref: bad ref %s (%s)", refname,
sha1_to_hex(sha1));
if (quiet)
return 0;
hex = find_unique_abbrev(sha1, abbrev);
if (hash_only)
printf("%s\n", hex);
else
printf("%s %s\n", hex, refname);
if (!deref_tags)
return 0;
if ((flag & REF_ISPACKED) && !peel_ref(refname, peeled)) {
if (!is_null_sha1(peeled)) {
hex = find_unique_abbrev(peeled, abbrev);
printf("%s %s^{}\n", hex, refname);
}
}
else {
obj = parse_object(sha1);
if (!obj)
die("git-show-ref: bad ref %s (%s)", refname,
sha1_to_hex(sha1));
if (obj->type == OBJ_TAG) {
obj = deref_tag(obj, refname, 0);
hex = find_unique_abbrev(obj->sha1, abbrev);
printf("%s %s^{}\n", hex, refname);
}
}
return 0;
}
int cmd_show_ref(int argc, const char **argv, const char *prefix)
{
int i;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (*arg != '-') {
pattern = argv + i;
break;
}
if (!strcmp(arg, "--")) {
pattern = argv + i + 1;
if (!*pattern)
pattern = NULL;
break;
}
if (!strcmp(arg, "-q") || !strcmp(arg, "--quiet")) {
quiet = 1;
continue;
}
if (!strcmp(arg, "-h") || !strcmp(arg, "--head")) {
show_head = 1;
continue;
}
if (!strcmp(arg, "-d") || !strcmp(arg, "--dereference")) {
deref_tags = 1;
continue;
}
if (!strcmp(arg, "-s") || !strcmp(arg, "--hash")) {
hash_only = 1;
continue;
}
if (!strncmp(arg, "--hash=", 7) ||
(!strncmp(arg, "--abbrev", 8) &&
(arg[8] == '=' || arg[8] == '\0'))) {
if (arg[3] != 'h' && !arg[8])
/* --abbrev only */
abbrev = DEFAULT_ABBREV;
else {
/* --hash= or --abbrev= */
char *end;
if (arg[3] == 'h') {
hash_only = 1;
arg += 7;
}
else
arg += 9;
abbrev = strtoul(arg, &end, 10);
if (*end || abbrev > 40)
usage(show_ref_usage);
if (abbrev < MINIMUM_ABBREV)
abbrev = MINIMUM_ABBREV;
}
continue;
}
if (!strcmp(arg, "--verify")) {
verify = 1;
continue;
}
if (!strcmp(arg, "--tags")) {
tags_only = 1;
continue;
}
if (!strcmp(arg, "--heads")) {
heads_only = 1;
continue;
}
usage(show_ref_usage);
}
if (show_head)
head_ref(show_ref, NULL);
for_each_ref(show_ref, NULL);
if (!found_match) {
if (verify && !quiet)
die("No match");
return 1;
}
return 0;
}
|
