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Commit | Line | Data |
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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) { | |
628cd543 SV |
67 | if (warn_if_not_exists) |
68 | fprintf(stderr, "does not exist %s\n", source); | |
fd0ffd3a JH |
69 | return -1; |
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; | |
e2b77f02 SV |
77 | fprintf(stderr, "cannot stat %s: %s\n", source, |
78 | strerror(errno)); | |
79 | return -1; | |
80 | } | |
81 | if (!symlink(source, dest)) { | |
82 | pull_say("symlink %s\n", hex); | |
83 | return 0; | |
84 | } | |
dfcb4057 | 85 | } |
b02a26cb | 86 | if (use_filecopy) { |
52e4478d JH |
87 | int ifd, ofd, status = 0; |
88 | ||
08b11616 | 89 | ifd = open(source, O_RDONLY); |
52e4478d JH |
90 | if (ifd < 0) { |
91 | if (!warn_if_not_exists && errno == ENOENT) | |
628cd543 | 92 | return -1; |
08b11616 | 93 | fprintf(stderr, "cannot open %s\n", source); |
b02a26cb JH |
94 | return -1; |
95 | } | |
52e4478d JH |
96 | ofd = open(dest, O_WRONLY | O_CREAT | O_EXCL, 0666); |
97 | if (ofd < 0) { | |
98 | fprintf(stderr, "cannot open %s\n", dest); | |
99 | close(ifd); | |
b02a26cb JH |
100 | return -1; |
101 | } | |
52e4478d JH |
102 | status = copy_fd(ifd, ofd); |
103 | close(ofd); | |
b02a26cb | 104 | if (status) |
08b11616 | 105 | fprintf(stderr, "cannot write %s\n", dest); |
b02a26cb | 106 | else |
e78d9772 | 107 | pull_say("copy %s\n", hex); |
b02a26cb | 108 | return status; |
dfcb4057 | 109 | } |
fd0ffd3a | 110 | fprintf(stderr, "failed to copy %s with given copy methods.\n", hex); |
b02a26cb | 111 | return -1; |
dfcb4057 JH |
112 | } |
113 | ||
2ab141a2 | 114 | static int fetch_pack(const unsigned char *sha1) |
08b11616 DB |
115 | { |
116 | struct packed_git *target; | |
117 | char filename[PATH_MAX]; | |
118 | if (setup_indices()) | |
119 | return -1; | |
120 | target = find_sha1_pack(sha1, packs); | |
121 | if (!target) | |
122 | return error("Couldn't find %s: not separate or in any pack", | |
123 | sha1_to_hex(sha1)); | |
124 | if (get_verbosely) { | |
125 | fprintf(stderr, "Getting pack %s\n", | |
126 | sha1_to_hex(target->sha1)); | |
127 | fprintf(stderr, " which contains %s\n", | |
128 | sha1_to_hex(sha1)); | |
129 | } | |
130 | sprintf(filename, "%s/objects/pack/pack-%s.pack", | |
d9200320 JH |
131 | path, sha1_to_hex(target->sha1)); |
132 | copy_file(filename, sha1_pack_name(target->sha1), | |
628cd543 | 133 | sha1_to_hex(target->sha1), 1); |
08b11616 | 134 | sprintf(filename, "%s/objects/pack/pack-%s.idx", |
d9200320 JH |
135 | path, sha1_to_hex(target->sha1)); |
136 | copy_file(filename, sha1_pack_index_name(target->sha1), | |
628cd543 | 137 | sha1_to_hex(target->sha1), 1); |
08b11616 DB |
138 | install_packed_git(target); |
139 | return 0; | |
140 | } | |
141 | ||
2ab141a2 | 142 | static int fetch_file(const unsigned char *sha1) |
08b11616 DB |
143 | { |
144 | static int object_name_start = -1; | |
145 | static char filename[PATH_MAX]; | |
146 | char *hex = sha1_to_hex(sha1); | |
0ffdbbfe | 147 | char *dest_filename = sha1_file_name(sha1); |
08b11616 DB |
148 | |
149 | if (object_name_start < 0) { | |
150 | strcpy(filename, path); /* e.g. git.git */ | |
151 | strcat(filename, "/objects/"); | |
152 | object_name_start = strlen(filename); | |
153 | } | |
154 | filename[object_name_start+0] = hex[0]; | |
155 | filename[object_name_start+1] = hex[1]; | |
156 | filename[object_name_start+2] = '/'; | |
157 | strcpy(filename + object_name_start + 3, hex + 2); | |
628cd543 | 158 | return copy_file(filename, dest_filename, hex, 0); |
08b11616 DB |
159 | } |
160 | ||
161 | int fetch(unsigned char *sha1) | |
162 | { | |
11f0dafe NH |
163 | if (has_sha1_file(sha1)) |
164 | return 0; | |
165 | else | |
166 | return fetch_file(sha1) && fetch_pack(sha1); | |
08b11616 DB |
167 | } |
168 | ||
cd541a68 DB |
169 | int fetch_ref(char *ref, unsigned char *sha1) |
170 | { | |
f5ab6cca JH |
171 | static int ref_name_start = -1; |
172 | static char filename[PATH_MAX]; | |
173 | static char hex[41]; | |
174 | int ifd; | |
175 | ||
176 | if (ref_name_start < 0) { | |
177 | sprintf(filename, "%s/refs/", path); | |
178 | ref_name_start = strlen(filename); | |
179 | } | |
180 | strcpy(filename + ref_name_start, ref); | |
181 | ifd = open(filename, O_RDONLY); | |
182 | if (ifd < 0) { | |
183 | close(ifd); | |
184 | fprintf(stderr, "cannot open %s\n", filename); | |
185 | return -1; | |
186 | } | |
93d26e4c | 187 | if (read_in_full(ifd, hex, 40) != 40 || get_sha1_hex(hex, sha1)) { |
f5ab6cca JH |
188 | close(ifd); |
189 | fprintf(stderr, "cannot read from %s\n", filename); | |
190 | return -1; | |
191 | } | |
192 | close(ifd); | |
193 | pull_say("ref %s\n", sha1_to_hex(sha1)); | |
194 | return 0; | |
cd541a68 DB |
195 | } |
196 | ||
4d1f1190 | 197 | static const char local_pull_usage[] = |
8e87ca66 | 198 | "git-local-fetch [-c] [-t] [-a] [-v] [-w filename] [--recover] [-l] [-s] [-n] [--stdin] commit-id path"; |
dfcb4057 | 199 | |
cc41cd2e | 200 | /* |
b02a26cb JH |
201 | * By default we only use file copy. |
202 | * If -l is specified, a hard link is attempted. | |
203 | * If -s is specified, then a symlink is attempted. | |
204 | * If -n is _not_ specified, then a regular file-to-file copy is done. | |
205 | */ | |
8e87ca66 | 206 | int main(int argc, const char **argv) |
dfcb4057 | 207 | { |
8e87ca66 PB |
208 | int commits; |
209 | const char **write_ref = NULL; | |
210 | char **commit_id; | |
dfcb4057 JH |
211 | int arg = 1; |
212 | ||
5a327713 | 213 | setup_git_directory(); |
d0740d92 | 214 | git_config(git_default_config); |
5a327713 | 215 | |
dfcb4057 JH |
216 | while (arg < argc && argv[arg][0] == '-') { |
217 | if (argv[arg][1] == 't') | |
218 | get_tree = 1; | |
219 | else if (argv[arg][1] == 'c') | |
220 | get_history = 1; | |
221 | else if (argv[arg][1] == 'a') { | |
222 | get_all = 1; | |
223 | get_tree = 1; | |
224 | get_history = 1; | |
225 | } | |
226 | else if (argv[arg][1] == 'l') | |
227 | use_link = 1; | |
228 | else if (argv[arg][1] == 's') | |
229 | use_symlink = 1; | |
b02a26cb JH |
230 | else if (argv[arg][1] == 'n') |
231 | use_filecopy = 0; | |
dfcb4057 | 232 | else if (argv[arg][1] == 'v') |
e78d9772 | 233 | get_verbosely = 1; |
f5ab6cca | 234 | else if (argv[arg][1] == 'w') |
8e87ca66 | 235 | write_ref = &argv[++arg]; |
820eca68 DB |
236 | else if (!strcmp(argv[arg], "--recover")) |
237 | get_recover = 1; | |
8e87ca66 PB |
238 | else if (!strcmp(argv[arg], "--stdin")) |
239 | commits_on_stdin = 1; | |
dfcb4057 JH |
240 | else |
241 | usage(local_pull_usage); | |
242 | arg++; | |
243 | } | |
8e87ca66 | 244 | if (argc < arg + 2 - commits_on_stdin) |
dfcb4057 | 245 | usage(local_pull_usage); |
8e87ca66 PB |
246 | if (commits_on_stdin) { |
247 | commits = pull_targets_stdin(&commit_id, &write_ref); | |
248 | } else { | |
249 | commit_id = (char **) &argv[arg++]; | |
250 | commits = 1; | |
251 | } | |
252 | path = argv[arg]; | |
dfcb4057 | 253 | |
8e87ca66 | 254 | if (pull(commits, commit_id, write_ref, path)) |
dfcb4057 JH |
255 | return 1; |
256 | ||
8e87ca66 PB |
257 | if (commits_on_stdin) |
258 | pull_targets_free(commits, commit_id, write_ref); | |
259 | ||
dfcb4057 JH |
260 | return 0; |
261 | } |