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 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;
37 char filename[PATH_MAX];
38 unsigned char sha1[20];
39 sprintf(filename, "%s/objects/pack/", path);
40 dir = opendir(filename);
41 while ((de = readdir(dir)) != NULL) {
42 int namelen = strlen(de->d_name);
44 strcmp(de->d_name + namelen - 5, ".pack"))
46 get_sha1_hex(sha1, de->d_name + 5);
52 int copy_file(const char *source, const char *dest, const char *hex)
55 if (!link(source, dest)) {
56 pull_say("link %s\n", hex);
59 /* If we got ENOENT there is no point continuing. */
60 if (errno == ENOENT) {
61 fprintf(stderr, "does not exist %s\n", source);
65 if (use_symlink && !symlink(source, dest)) {
66 pull_say("symlink %s\n", hex);
73 ifd = open(source, O_RDONLY);
74 if (ifd < 0 || fstat(ifd, &st) < 0) {
76 fprintf(stderr, "cannot open %s\n", source);
79 map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, ifd, 0);
81 if (map == MAP_FAILED) {
82 fprintf(stderr, "cannot mmap %s\n", source);
85 ofd = open(dest, O_WRONLY | O_CREAT | O_EXCL, 0666);
86 status = ((ofd < 0) ||
87 (write(ofd, map, st.st_size) != st.st_size));
88 munmap(map, st.st_size);
91 fprintf(stderr, "cannot write %s\n", dest);
93 pull_say("copy %s\n", hex);
96 fprintf(stderr, "failed to copy %s with given copy methods.\n", hex);
100 int fetch_pack(unsigned char *sha1)
102 struct packed_git *target;
103 char filename[PATH_MAX];
106 target = find_sha1_pack(sha1, packs);
108 return error("Couldn't find %s: not separate or in any pack",
111 fprintf(stderr, "Getting pack %s\n",
112 sha1_to_hex(target->sha1));
113 fprintf(stderr, " which contains %s\n",
116 sprintf(filename, "%s/objects/pack/pack-%s.pack",
117 path, sha1_to_hex(sha1));
118 copy_file(filename, sha1_pack_name(sha1), sha1_to_hex(sha1));
119 sprintf(filename, "%s/objects/pack/pack-%s.idx",
120 path, sha1_to_hex(sha1));
121 copy_file(filename, sha1_pack_index_name(sha1), sha1_to_hex(sha1));
122 install_packed_git(target);
126 int fetch_file(unsigned char *sha1)
128 static int object_name_start = -1;
129 static char filename[PATH_MAX];
130 char *hex = sha1_to_hex(sha1);
131 const char *dest_filename = sha1_file_name(sha1);
133 if (object_name_start < 0) {
134 strcpy(filename, path); /* e.g. git.git */
135 strcat(filename, "/objects/");
136 object_name_start = strlen(filename);
138 filename[object_name_start+0] = hex[0];
139 filename[object_name_start+1] = hex[1];
140 filename[object_name_start+2] = '/';
141 strcpy(filename + object_name_start + 3, hex + 2);
142 return copy_file(filename, dest_filename, hex);
145 int fetch(unsigned char *sha1)
147 return fetch_file(sha1) && fetch_pack(sha1);
150 int fetch_ref(char *ref, unsigned char *sha1)
152 static int ref_name_start = -1;
153 static char filename[PATH_MAX];
157 if (ref_name_start < 0) {
158 sprintf(filename, "%s/refs/", path);
159 ref_name_start = strlen(filename);
161 strcpy(filename + ref_name_start, ref);
162 ifd = open(filename, O_RDONLY);
165 fprintf(stderr, "cannot open %s\n", filename);
168 if (read(ifd, hex, 40) != 40 || get_sha1_hex(hex, sha1)) {
170 fprintf(stderr, "cannot read from %s\n", filename);
174 pull_say("ref %s\n", sha1_to_hex(sha1));
178 static const char local_pull_usage[] =
179 "git-local-pull [-c] [-t] [-a] [-d] [-v] [-w filename] [--recover] [-l] [-s] [-n] commit-id path";
182 * By default we only use file copy.
183 * If -l is specified, a hard link is attempted.
184 * If -s is specified, then a symlink is attempted.
185 * If -n is _not_ specified, then a regular file-to-file copy is done.
187 int main(int argc, char **argv)
192 while (arg < argc && argv[arg][0] == '-') {
193 if (argv[arg][1] == 't')
195 else if (argv[arg][1] == 'c')
197 else if (argv[arg][1] == 'a') {
202 else if (argv[arg][1] == 'l')
204 else if (argv[arg][1] == 's')
206 else if (argv[arg][1] == 'n')
208 else if (argv[arg][1] == 'v')
210 else if (argv[arg][1] == 'w')
211 write_ref = argv[++arg];
213 usage(local_pull_usage);
217 usage(local_pull_usage);
218 commit_id = argv[arg];
219 path = argv[arg + 1];