2 * Copyright (C) 2005 Junio C Hamano
8 static int use_link
= 0;
9 static int use_symlink
= 0;
10 static int use_filecopy
= 1;
12 static char *path
; /* "Remote" git repository */
14 void prefetch(unsigned char *sha1
)
18 static struct packed_git
*packs
= NULL
;
20 static void setup_index(unsigned char *sha1
)
22 struct packed_git
*new_pack
;
23 char filename
[PATH_MAX
];
24 strcpy(filename
, path
);
25 strcat(filename
, "/objects/pack/pack-");
26 strcat(filename
, sha1_to_hex(sha1
));
27 strcat(filename
, ".idx");
28 new_pack
= parse_pack_index_file(sha1
, filename
);
29 new_pack
->next
= packs
;
33 static int setup_indices(void)
37 char filename
[PATH_MAX
];
38 unsigned char sha1
[20];
39 sprintf(filename
, "%s/objects/pack/", path
);
40 dir
= opendir(filename
);
43 while ((de
= readdir(dir
)) != NULL
) {
44 int namelen
= strlen(de
->d_name
);
46 strcmp(de
->d_name
+ namelen
- 5, ".pack"))
48 get_sha1_hex(de
->d_name
+ 5, sha1
);
55 static int copy_file(const char *source
, const char *dest
, const char *hex
)
58 if (!link(source
, dest
)) {
59 pull_say("link %s\n", hex
);
62 /* If we got ENOENT there is no point continuing. */
63 if (errno
== ENOENT
) {
64 fprintf(stderr
, "does not exist %s\n", source
);
68 if (use_symlink
&& !symlink(source
, dest
)) {
69 pull_say("symlink %s\n", hex
);
76 ifd
= open(source
, O_RDONLY
);
77 if (ifd
< 0 || fstat(ifd
, &st
) < 0) {
79 fprintf(stderr
, "cannot open %s\n", source
);
82 map
= mmap(NULL
, st
.st_size
, PROT_READ
, MAP_PRIVATE
, ifd
, 0);
84 if (map
== MAP_FAILED
) {
85 fprintf(stderr
, "cannot mmap %s\n", source
);
88 ofd
= open(dest
, O_WRONLY
| O_CREAT
| O_EXCL
, 0666);
89 status
= ((ofd
< 0) ||
90 (write(ofd
, map
, st
.st_size
) != st
.st_size
));
91 munmap(map
, st
.st_size
);
94 fprintf(stderr
, "cannot write %s\n", dest
);
96 pull_say("copy %s\n", hex
);
99 fprintf(stderr
, "failed to copy %s with given copy methods.\n", hex
);
103 static int fetch_pack(const unsigned char *sha1
)
105 struct packed_git
*target
;
106 char filename
[PATH_MAX
];
109 target
= find_sha1_pack(sha1
, packs
);
111 return error("Couldn't find %s: not separate or in any pack",
114 fprintf(stderr
, "Getting pack %s\n",
115 sha1_to_hex(target
->sha1
));
116 fprintf(stderr
, " which contains %s\n",
119 sprintf(filename
, "%s/objects/pack/pack-%s.pack",
120 path
, sha1_to_hex(target
->sha1
));
121 copy_file(filename
, sha1_pack_name(target
->sha1
),
122 sha1_to_hex(target
->sha1
));
123 sprintf(filename
, "%s/objects/pack/pack-%s.idx",
124 path
, sha1_to_hex(target
->sha1
));
125 copy_file(filename
, sha1_pack_index_name(target
->sha1
),
126 sha1_to_hex(target
->sha1
));
127 install_packed_git(target
);
131 static int fetch_file(const unsigned char *sha1
)
133 static int object_name_start
= -1;
134 static char filename
[PATH_MAX
];
135 char *hex
= sha1_to_hex(sha1
);
136 const char *dest_filename
= sha1_file_name(sha1
);
138 if (object_name_start
< 0) {
139 strcpy(filename
, path
); /* e.g. git.git */
140 strcat(filename
, "/objects/");
141 object_name_start
= strlen(filename
);
143 filename
[object_name_start
+0] = hex
[0];
144 filename
[object_name_start
+1] = hex
[1];
145 filename
[object_name_start
+2] = '/';
146 strcpy(filename
+ object_name_start
+ 3, hex
+ 2);
147 return copy_file(filename
, dest_filename
, hex
);
150 int fetch(unsigned char *sha1
)
152 return fetch_file(sha1
) && fetch_pack(sha1
);
155 int fetch_ref(char *ref
, unsigned char *sha1
)
157 static int ref_name_start
= -1;
158 static char filename
[PATH_MAX
];
162 if (ref_name_start
< 0) {
163 sprintf(filename
, "%s/refs/", path
);
164 ref_name_start
= strlen(filename
);
166 strcpy(filename
+ ref_name_start
, ref
);
167 ifd
= open(filename
, O_RDONLY
);
170 fprintf(stderr
, "cannot open %s\n", filename
);
173 if (read(ifd
, hex
, 40) != 40 || get_sha1_hex(hex
, sha1
)) {
175 fprintf(stderr
, "cannot read from %s\n", filename
);
179 pull_say("ref %s\n", sha1_to_hex(sha1
));
183 static const char local_pull_usage
[] =
184 "git-local-fetch [-c] [-t] [-a] [-d] [-v] [-w filename] [--recover] [-l] [-s] [-n] commit-id path";
187 * By default we only use file copy.
188 * If -l is specified, a hard link is attempted.
189 * If -s is specified, then a symlink is attempted.
190 * If -n is _not_ specified, then a regular file-to-file copy is done.
192 int main(int argc
, char **argv
)
197 while (arg
< argc
&& argv
[arg
][0] == '-') {
198 if (argv
[arg
][1] == 't')
200 else if (argv
[arg
][1] == 'c')
202 else if (argv
[arg
][1] == 'a') {
207 else if (argv
[arg
][1] == 'l')
209 else if (argv
[arg
][1] == 's')
211 else if (argv
[arg
][1] == 'n')
213 else if (argv
[arg
][1] == 'v')
215 else if (argv
[arg
][1] == 'w')
216 write_ref
= argv
[++arg
];
218 usage(local_pull_usage
);
222 usage(local_pull_usage
);
223 commit_id
= argv
[arg
];
224 path
= argv
[arg
+ 1];