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
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
#include "cache.h"
#include "remote.h"
#include "refs.h"
static struct remote **remotes;
static int allocated_remotes;
#define BUF_SIZE (2048)
static char buffer[BUF_SIZE];
static void add_push_refspec(struct remote *remote, const char *ref)
{
int nr = remote->push_refspec_nr + 1;
remote->push_refspec =
xrealloc(remote->push_refspec, nr * sizeof(char *));
remote->push_refspec[nr-1] = ref;
remote->push_refspec_nr = nr;
}
static void add_uri(struct remote *remote, const char *uri)
{
int nr = remote->uri_nr + 1;
remote->uri =
xrealloc(remote->uri, nr * sizeof(char *));
remote->uri[nr-1] = uri;
remote->uri_nr = nr;
}
static struct remote *make_remote(const char *name, int len)
{
int i, empty = -1;
for (i = 0; i < allocated_remotes; i++) {
if (!remotes[i]) {
if (empty < 0)
empty = i;
} else {
if (len ? (!strncmp(name, remotes[i]->name, len) &&
!remotes[i]->name[len]) :
!strcmp(name, remotes[i]->name))
return remotes[i];
}
}
if (empty < 0) {
empty = allocated_remotes;
allocated_remotes += allocated_remotes ? allocated_remotes : 1;
remotes = xrealloc(remotes,
sizeof(*remotes) * allocated_remotes);
memset(remotes + empty, 0,
(allocated_remotes - empty) * sizeof(*remotes));
}
remotes[empty] = xcalloc(1, sizeof(struct remote));
if (len)
remotes[empty]->name = xstrndup(name, len);
else
remotes[empty]->name = xstrdup(name);
return remotes[empty];
}
static void read_remotes_file(struct remote *remote)
{
FILE *f = fopen(git_path("remotes/%s", remote->name), "r");
if (!f)
return;
while (fgets(buffer, BUF_SIZE, f)) {
int value_list;
char *s, *p;
if (!prefixcmp(buffer, "URL:")) {
value_list = 0;
s = buffer + 4;
} else if (!prefixcmp(buffer, "Push:")) {
value_list = 1;
s = buffer + 5;
} else
continue;
while (isspace(*s))
s++;
if (!*s)
continue;
p = s + strlen(s);
while (isspace(p[-1]))
*--p = 0;
switch (value_list) {
case 0:
add_uri(remote, xstrdup(s));
break;
case 1:
add_push_refspec(remote, xstrdup(s));
break;
}
}
fclose(f);
}
static void read_branches_file(struct remote *remote)
{
const char *slash = strchr(remote->name, '/');
int n = slash ? slash - remote->name : 1000;
FILE *f = fopen(git_path("branches/%.*s", n, remote->name), "r");
char *s, *p;
int len;
if (!f)
return;
s = fgets(buffer, BUF_SIZE, f);
fclose(f);
if (!s)
return;
while (isspace(*s))
s++;
if (!*s)
return;
p = s + strlen(s);
while (isspace(p[-1]))
*--p = 0;
len = p - s;
if (slash)
len += strlen(slash);
p = xmalloc(len + 1);
strcpy(p, s);
if (slash)
strcat(p, slash);
add_uri(remote, p);
}
static char *default_remote_name = NULL;
static const char *current_branch = NULL;
static int current_branch_len = 0;
static int handle_config(const char *key, const char *value)
{
const char *name;
const char *subkey;
struct remote *remote;
if (!prefixcmp(key, "branch.") && current_branch &&
!strncmp(key + 7, current_branch, current_branch_len) &&
!strcmp(key + 7 + current_branch_len, ".remote")) {
free(default_remote_name);
default_remote_name = xstrdup(value);
}
if (prefixcmp(key, "remote."))
return 0;
name = key + 7;
subkey = strrchr(name, '.');
if (!subkey)
return error("Config with no key for remote %s", name);
if (*subkey == '/') {
warning("Config remote shorthand cannot begin with '/': %s", name);
return 0;
}
remote = make_remote(name, subkey - name);
if (!value) {
/* if we ever have a boolean variable, e.g. "remote.*.disabled"
* [remote "frotz"]
* disabled
* is a valid way to set it to true; we get NULL in value so
* we need to handle it here.
*
* if (!strcmp(subkey, ".disabled")) {
* val = git_config_bool(key, value);
* return 0;
* } else
*
*/
return 0; /* ignore unknown booleans */
}
if (!strcmp(subkey, ".url")) {
add_uri(remote, xstrdup(value));
} else if (!strcmp(subkey, ".push")) {
add_push_refspec(remote, xstrdup(value));
} else if (!strcmp(subkey, ".receivepack")) {
if (!remote->receivepack)
remote->receivepack = xstrdup(value);
else
error("more than one receivepack given, using the first");
}
return 0;
}
static void read_config(void)
{
unsigned char sha1[20];
const char *head_ref;
int flag;
if (default_remote_name) // did this already
return;
default_remote_name = xstrdup("origin");
current_branch = NULL;
head_ref = resolve_ref("HEAD", sha1, 0, &flag);
if (head_ref && (flag & REF_ISSYMREF) &&
!prefixcmp(head_ref, "refs/heads/")) {
current_branch = head_ref + strlen("refs/heads/");
current_branch_len = strlen(current_branch);
}
git_config(handle_config);
}
struct remote *remote_get(const char *name)
{
struct remote *ret;
read_config();
if (!name)
name = default_remote_name;
ret = make_remote(name, 0);
if (name[0] != '/') {
if (!ret->uri)
read_remotes_file(ret);
if (!ret->uri)
read_branches_file(ret);
}
if (!ret->uri)
add_uri(ret, name);
if (!ret->uri)
return NULL;
return ret;
}
|
