]>
Commit | Line | Data |
---|---|---|
b02a26cb JH |
1 | /* |
2 | * Copyright (C) 2005 Junio C Hamano | |
3 | */ | |
dfcb4057 JH |
4 | #include "cache.h" |
5 | #include "commit.h" | |
215a7ad1 | 6 | #include "fetch.h" |
dfcb4057 | 7 | |
96f1e58f DR |
8 | static int use_link; |
9 | static int use_symlink; | |
b02a26cb | 10 | static int use_filecopy = 1; |
96f1e58f | 11 | static int commits_on_stdin; |
dfcb4057 | 12 | |
8e87ca66 | 13 | static const char *path; /* "Remote" git repository */ |
dfcb4057 | 14 | |
1e8be59d DB |
15 | void prefetch(unsigned char *sha1) |
16 | { | |
17 | } | |
18 | ||
96f1e58f | 19 | static struct packed_git *packs; |
08b11616 | 20 | |
2ab141a2 | 21 | static void setup_index(unsigned char *sha1) |
dfcb4057 | 22 | { |
08b11616 DB |
23 | struct packed_git *new_pack; |
24 | char filename[PATH_MAX]; | |
25 | strcpy(filename, path); | |
26 | strcat(filename, "/objects/pack/pack-"); | |
27 | strcat(filename, sha1_to_hex(sha1)); | |
28 | strcat(filename, ".idx"); | |
29 | new_pack = parse_pack_index_file(sha1, filename); | |
30 | new_pack->next = packs; | |
31 | packs = new_pack; | |
32 | } | |
dfcb4057 | 33 | |
2ab141a2 | 34 | static int setup_indices(void) |
08b11616 DB |
35 | { |
36 | DIR *dir; | |
37 | struct dirent *de; | |
38 | char filename[PATH_MAX]; | |
39 | unsigned char sha1[20]; | |
40 | sprintf(filename, "%s/objects/pack/", path); | |
41 | dir = opendir(filename); | |
8be707de SV |
42 | if (!dir) |
43 | return -1; | |
08b11616 DB |
44 | while ((de = readdir(dir)) != NULL) { |
45 | int namelen = strlen(de->d_name); | |
83a2b841 | 46 | if (namelen != 50 || |
5bb1cda5 | 47 | !has_extension(de->d_name, ".pack")) |
08b11616 | 48 | continue; |
d9200320 | 49 | get_sha1_hex(de->d_name + 5, sha1); |
08b11616 | 50 | setup_index(sha1); |
dfcb4057 | 51 | } |
8be707de | 52 | closedir(dir); |
08b11616 DB |
53 | return 0; |
54 | } | |
55 | ||
0ffdbbfe | 56 | static int copy_file(const char *source, char *dest, const char *hex, |
628cd543 | 57 | int warn_if_not_exists) |
08b11616 | 58 | { |
0ffdbbfe | 59 | safe_create_leading_directories(dest); |
fd0ffd3a | 60 | if (use_link) { |
08b11616 | 61 | if (!link(source, dest)) { |
e78d9772 | 62 | pull_say("link %s\n", hex); |
fd0ffd3a JH |
63 | return 0; |
64 | } | |
65 | /* If we got ENOENT there is no point continuing. */ | |
66 | if (errno == ENOENT) { | |
e8e91fec NP |
67 | if (!warn_if_not_exists) |
68 | return -1; | |
69 | return error("does not exist %s", source); | |
fd0ffd3a | 70 | } |
dfcb4057 | 71 | } |
e2b77f02 SV |
72 | if (use_symlink) { |
73 | struct stat st; | |
74 | if (stat(source, &st)) { | |
628cd543 SV |
75 | if (!warn_if_not_exists && errno == ENOENT) |
76 | return -1; | |
e8e91fec NP |
77 | return error("cannot stat %s: %s", source, |
78 | strerror(errno)); | |
e2b77f02 SV |
79 | } |
80 | if (!symlink(source, dest)) { | |
81 | pull_say("symlink %s\n", hex); | |
82 | return 0; | |
83 | } | |
dfcb4057 | 84 | } |
b02a26cb | 85 | if (use_filecopy) { |
52e4478d JH |
86 | int ifd, ofd, status = 0; |
87 | ||
08b11616 | 88 | ifd = open(source, O_RDONLY); |
52e4478d JH |
89 | if (ifd < 0) { |
90 | if (!warn_if_not_exists && errno == ENOENT) | |
628cd543 | 91 | return -1; |
e8e91fec | 92 | return error("cannot open %s", source); |
b02a26cb | 93 | } |
52e4478d JH |
94 | ofd = open(dest, O_WRONLY | O_CREAT | O_EXCL, 0666); |
95 | if (ofd < 0) { | |
52e4478d | 96 | close(ifd); |
e8e91fec | 97 | return error("cannot open %s", dest); |
b02a26cb | 98 | } |
52e4478d JH |
99 | status = copy_fd(ifd, ofd); |
100 | close(ofd); | |
b02a26cb | 101 | if (status) |
e8e91fec NP |
102 | return error("cannot write %s", dest); |
103 | pull_say("copy %s\n", hex); | |
104 | return 0; | |
dfcb4057 | 105 | } |
e8e91fec | 106 | return error("failed to copy %s with given copy methods.", hex); |
dfcb4057 JH |
107 | } |
108 | ||
2ab141a2 | 109 | static int fetch_pack(const unsigned char *sha1) |
08b11616 DB |
110 | { |
111 | struct packed_git *target; | |
112 | char filename[PATH_MAX]; | |
113 | if (setup_indices()) | |
114 | return -1; | |
115 | target = find_sha1_pack(sha1, packs); | |
116 | if (!target) | |
a6080a0a | 117 | return error("Couldn't find %s: not separate or in any pack", |
08b11616 DB |
118 | sha1_to_hex(sha1)); |
119 | if (get_verbosely) { | |
120 | fprintf(stderr, "Getting pack %s\n", | |
121 | sha1_to_hex(target->sha1)); | |
122 | fprintf(stderr, " which contains %s\n", | |
123 | sha1_to_hex(sha1)); | |
124 | } | |
a6080a0a | 125 | sprintf(filename, "%s/objects/pack/pack-%s.pack", |
d9200320 JH |
126 | path, sha1_to_hex(target->sha1)); |
127 | copy_file(filename, sha1_pack_name(target->sha1), | |
628cd543 | 128 | sha1_to_hex(target->sha1), 1); |
a6080a0a | 129 | sprintf(filename, "%s/objects/pack/pack-%s.idx", |
d9200320 JH |
130 | path, sha1_to_hex(target->sha1)); |
131 | copy_file(filename, sha1_pack_index_name(target->sha1), | |
628cd543 | 132 | sha1_to_hex(target->sha1), 1); |
08b11616 DB |
133 | install_packed_git(target); |
134 | return 0; | |
135 | } | |
136 | ||
2ab141a2 | 137 | static int fetch_file(const unsigned char *sha1) |
08b11616 DB |
138 | { |
139 | static int object_name_start = -1; | |
140 | static char filename[PATH_MAX]; | |
141 | char *hex = sha1_to_hex(sha1); | |
0ffdbbfe | 142 | char *dest_filename = sha1_file_name(sha1); |
08b11616 | 143 | |
a6080a0a | 144 | if (object_name_start < 0) { |
08b11616 DB |
145 | strcpy(filename, path); /* e.g. git.git */ |
146 | strcat(filename, "/objects/"); | |
147 | object_name_start = strlen(filename); | |
148 | } | |
149 | filename[object_name_start+0] = hex[0]; | |
150 | filename[object_name_start+1] = hex[1]; | |
151 | filename[object_name_start+2] = '/'; | |
152 | strcpy(filename + object_name_start + 3, hex + 2); | |
628cd543 | 153 | return copy_file(filename, dest_filename, hex, 0); |
08b11616 DB |
154 | } |
155 | ||
156 | int fetch(unsigned char *sha1) | |
157 | { | |
11f0dafe NH |
158 | if (has_sha1_file(sha1)) |
159 | return 0; | |
160 | else | |
161 | return fetch_file(sha1) && fetch_pack(sha1); | |
08b11616 DB |
162 | } |
163 | ||
cd541a68 DB |
164 | int fetch_ref(char *ref, unsigned char *sha1) |
165 | { | |
f5ab6cca JH |
166 | static int ref_name_start = -1; |
167 | static char filename[PATH_MAX]; | |
168 | static char hex[41]; | |
169 | int ifd; | |
170 | ||
171 | if (ref_name_start < 0) { | |
172 | sprintf(filename, "%s/refs/", path); | |
173 | ref_name_start = strlen(filename); | |
174 | } | |
175 | strcpy(filename + ref_name_start, ref); | |
176 | ifd = open(filename, O_RDONLY); | |
177 | if (ifd < 0) { | |
178 | close(ifd); | |
e8e91fec | 179 | return error("cannot open %s", filename); |
f5ab6cca | 180 | } |
93d26e4c | 181 | if (read_in_full(ifd, hex, 40) != 40 || get_sha1_hex(hex, sha1)) { |
f5ab6cca | 182 | close(ifd); |
e8e91fec | 183 | return error("cannot read from %s", filename); |
f5ab6cca JH |
184 | } |
185 | close(ifd); | |
186 | pull_say("ref %s\n", sha1_to_hex(sha1)); | |
187 | return 0; | |
cd541a68 DB |
188 | } |
189 | ||
4d1f1190 | 190 | static const char local_pull_usage[] = |
8e87ca66 | 191 | "git-local-fetch [-c] [-t] [-a] [-v] [-w filename] [--recover] [-l] [-s] [-n] [--stdin] commit-id path"; |
dfcb4057 | 192 | |
cc41cd2e | 193 | /* |
b02a26cb JH |
194 | * By default we only use file copy. |
195 | * If -l is specified, a hard link is attempted. | |
196 | * If -s is specified, then a symlink is attempted. | |
197 | * If -n is _not_ specified, then a regular file-to-file copy is done. | |
198 | */ | |
8e87ca66 | 199 | int main(int argc, const char **argv) |
dfcb4057 | 200 | { |
8e87ca66 PB |
201 | int commits; |
202 | const char **write_ref = NULL; | |
203 | char **commit_id; | |
dfcb4057 JH |
204 | int arg = 1; |
205 | ||
5a327713 | 206 | setup_git_directory(); |
d0740d92 | 207 | git_config(git_default_config); |
5a327713 | 208 | |
dfcb4057 JH |
209 | while (arg < argc && argv[arg][0] == '-') { |
210 | if (argv[arg][1] == 't') | |
211 | get_tree = 1; | |
212 | else if (argv[arg][1] == 'c') | |
213 | get_history = 1; | |
214 | else if (argv[arg][1] == 'a') { | |
215 | get_all = 1; | |
216 | get_tree = 1; | |
217 | get_history = 1; | |
218 | } | |
219 | else if (argv[arg][1] == 'l') | |
220 | use_link = 1; | |
221 | else if (argv[arg][1] == 's') | |
222 | use_symlink = 1; | |
b02a26cb JH |
223 | else if (argv[arg][1] == 'n') |
224 | use_filecopy = 0; | |
dfcb4057 | 225 | else if (argv[arg][1] == 'v') |
e78d9772 | 226 | get_verbosely = 1; |
f5ab6cca | 227 | else if (argv[arg][1] == 'w') |
8e87ca66 | 228 | write_ref = &argv[++arg]; |
820eca68 DB |
229 | else if (!strcmp(argv[arg], "--recover")) |
230 | get_recover = 1; | |
8e87ca66 PB |
231 | else if (!strcmp(argv[arg], "--stdin")) |
232 | commits_on_stdin = 1; | |
dfcb4057 JH |
233 | else |
234 | usage(local_pull_usage); | |
235 | arg++; | |
236 | } | |
8e87ca66 | 237 | if (argc < arg + 2 - commits_on_stdin) |
dfcb4057 | 238 | usage(local_pull_usage); |
8e87ca66 PB |
239 | if (commits_on_stdin) { |
240 | commits = pull_targets_stdin(&commit_id, &write_ref); | |
241 | } else { | |
242 | commit_id = (char **) &argv[arg++]; | |
243 | commits = 1; | |
244 | } | |
245 | path = argv[arg]; | |
dfcb4057 | 246 | |
8e87ca66 | 247 | if (pull(commits, commit_id, write_ref, path)) |
dfcb4057 JH |
248 | return 1; |
249 | ||
8e87ca66 PB |
250 | if (commits_on_stdin) |
251 | pull_targets_free(commits, commit_id, write_ref); | |
252 | ||
dfcb4057 JH |
253 | return 0; |
254 | } |