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);
70 if (stat(source, &st)) {
71 fprintf(stderr, "cannot stat %s: %s\n", source,
75 if (!symlink(source, dest)) {
76 pull_say("symlink %s\n", hex);
84 ifd = open(source, O_RDONLY);
85 if (ifd < 0 || fstat(ifd, &st) < 0) {
88 fprintf(stderr, "cannot open %s\n", source);
91 map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, ifd, 0);
93 if (map == MAP_FAILED) {
94 fprintf(stderr, "cannot mmap %s\n", source);
97 ofd = open(dest, O_WRONLY | O_CREAT | O_EXCL, 0666);
98 status = ((ofd < 0) ||
99 (write(ofd, map, st.st_size) != st.st_size));
100 munmap(map, st.st_size);
104 fprintf(stderr, "cannot write %s\n", dest);
106 pull_say("copy %s\n", hex);
109 fprintf(stderr, "failed to copy %s with given copy methods.\n", hex);
113 static int fetch_pack(const unsigned char *sha1)
115 struct packed_git *target;
116 char filename[PATH_MAX];
119 target = find_sha1_pack(sha1, packs);
121 return error("Couldn't find %s: not separate or in any pack",
124 fprintf(stderr, "Getting pack %s\n",
125 sha1_to_hex(target->sha1));
126 fprintf(stderr, " which contains %s\n",
129 sprintf(filename, "%s/objects/pack/pack-%s.pack",
130 path, sha1_to_hex(target->sha1));
131 copy_file(filename, sha1_pack_name(target->sha1),
132 sha1_to_hex(target->sha1));
133 sprintf(filename, "%s/objects/pack/pack-%s.idx",
134 path, sha1_to_hex(target->sha1));
135 copy_file(filename, sha1_pack_index_name(target->sha1),
136 sha1_to_hex(target->sha1));
137 install_packed_git(target);
141 static int fetch_file(const unsigned char *sha1)
143 static int object_name_start = -1;
144 static char filename[PATH_MAX];
145 char *hex = sha1_to_hex(sha1);
146 const char *dest_filename = sha1_file_name(sha1);
148 if (object_name_start < 0) {
149 strcpy(filename, path); /* e.g. git.git */
150 strcat(filename, "/objects/");
151 object_name_start = strlen(filename);
153 filename[object_name_start+0] = hex[0];
154 filename[object_name_start+1] = hex[1];
155 filename[object_name_start+2] = '/';
156 strcpy(filename + object_name_start + 3, hex + 2);
157 return copy_file(filename, dest_filename, hex);
160 int fetch(unsigned char *sha1)
162 return fetch_file(sha1) && fetch_pack(sha1);
165 int fetch_ref(char *ref, unsigned char *sha1)
167 static int ref_name_start = -1;
168 static char filename[PATH_MAX];
172 if (ref_name_start < 0) {
173 sprintf(filename, "%s/refs/", path);
174 ref_name_start = strlen(filename);
176 strcpy(filename + ref_name_start, ref);
177 ifd = open(filename, O_RDONLY);
180 fprintf(stderr, "cannot open %s\n", filename);
183 if (read(ifd, hex, 40) != 40 || get_sha1_hex(hex, sha1)) {
185 fprintf(stderr, "cannot read from %s\n", filename);
189 pull_say("ref %s\n", sha1_to_hex(sha1));
193 static const char local_pull_usage[] =
194 "git-local-fetch [-c] [-t] [-a] [-d] [-v] [-w filename] [--recover] [-l] [-s] [-n] commit-id path";
197 * By default we only use file copy.
198 * If -l is specified, a hard link is attempted.
199 * If -s is specified, then a symlink is attempted.
200 * If -n is _not_ specified, then a regular file-to-file copy is done.
202 int main(int argc, char **argv)
207 while (arg < argc && argv[arg][0] == '-') {
208 if (argv[arg][1] == 't')
210 else if (argv[arg][1] == 'c')
212 else if (argv[arg][1] == 'a') {
217 else if (argv[arg][1] == 'l')
219 else if (argv[arg][1] == 's')
221 else if (argv[arg][1] == 'n')
223 else if (argv[arg][1] == 'v')
225 else if (argv[arg][1] == 'w')
226 write_ref = argv[++arg];
228 usage(local_pull_usage);
232 usage(local_pull_usage);
233 commit_id = argv[arg];
234 path = argv[arg + 1];