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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" | |
dfcb4057 JH |
6 | #include "pull.h" |
7 | ||
8 | static int use_link = 0; | |
9 | static int use_symlink = 0; | |
b02a26cb | 10 | static int use_filecopy = 1; |
dfcb4057 JH |
11 | |
12 | static char *path; | |
13 | ||
dfcb4057 JH |
14 | int fetch(unsigned char *sha1) |
15 | { | |
16 | static int object_name_start = -1; | |
17 | static char filename[PATH_MAX]; | |
18 | char *hex = sha1_to_hex(sha1); | |
19 | const char *dest_filename = sha1_file_name(sha1); | |
dfcb4057 JH |
20 | |
21 | if (object_name_start < 0) { | |
22 | strcpy(filename, path); /* e.g. git.git */ | |
23 | strcat(filename, "/objects/"); | |
24 | object_name_start = strlen(filename); | |
25 | } | |
26 | filename[object_name_start+0] = hex[0]; | |
27 | filename[object_name_start+1] = hex[1]; | |
28 | filename[object_name_start+2] = '/'; | |
29 | strcpy(filename + object_name_start + 3, hex + 2); | |
fd0ffd3a JH |
30 | if (use_link) { |
31 | if (!link(filename, dest_filename)) { | |
e78d9772 | 32 | pull_say("link %s\n", hex); |
fd0ffd3a JH |
33 | return 0; |
34 | } | |
35 | /* If we got ENOENT there is no point continuing. */ | |
36 | if (errno == ENOENT) { | |
37 | fprintf(stderr, "does not exist %s\n", filename); | |
38 | return -1; | |
39 | } | |
dfcb4057 JH |
40 | } |
41 | if (use_symlink && !symlink(filename, dest_filename)) { | |
e78d9772 | 42 | pull_say("symlink %s\n", hex); |
dfcb4057 JH |
43 | return 0; |
44 | } | |
b02a26cb JH |
45 | if (use_filecopy) { |
46 | int ifd, ofd, status; | |
47 | struct stat st; | |
48 | void *map; | |
49 | ifd = open(filename, O_RDONLY); | |
50 | if (ifd < 0 || fstat(ifd, &st) < 0) { | |
51 | close(ifd); | |
fd0ffd3a | 52 | fprintf(stderr, "cannot open %s\n", filename); |
b02a26cb JH |
53 | return -1; |
54 | } | |
55 | map = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, ifd, 0); | |
dfcb4057 | 56 | close(ifd); |
b02a26cb | 57 | if (-1 == (int)(long)map) { |
fd0ffd3a | 58 | fprintf(stderr, "cannot mmap %s\n", filename); |
b02a26cb JH |
59 | return -1; |
60 | } | |
61 | ofd = open(dest_filename, O_WRONLY | O_CREAT | O_EXCL, 0666); | |
62 | status = ((ofd < 0) || | |
63 | (write(ofd, map, st.st_size) != st.st_size)); | |
64 | munmap(map, st.st_size); | |
65 | close(ofd); | |
66 | if (status) | |
b4635be7 | 67 | fprintf(stderr, "cannot write %s\n", dest_filename); |
b02a26cb | 68 | else |
e78d9772 | 69 | pull_say("copy %s\n", hex); |
b02a26cb | 70 | return status; |
dfcb4057 | 71 | } |
fd0ffd3a | 72 | fprintf(stderr, "failed to copy %s with given copy methods.\n", hex); |
b02a26cb | 73 | return -1; |
dfcb4057 JH |
74 | } |
75 | ||
cd541a68 DB |
76 | int fetch_ref(char *ref, unsigned char *sha1) |
77 | { | |
78 | return -1; | |
79 | } | |
80 | ||
dfcb4057 | 81 | static const char *local_pull_usage = |
a48e1d67 | 82 | "git-local-pull [-c] [-t] [-a] [-l] [-s] [-n] [-v] [-d] [--recover] commit-id path"; |
dfcb4057 | 83 | |
b02a26cb JH |
84 | /* |
85 | * By default we only use file copy. | |
86 | * If -l is specified, a hard link is attempted. | |
87 | * If -s is specified, then a symlink is attempted. | |
88 | * If -n is _not_ specified, then a regular file-to-file copy is done. | |
89 | */ | |
dfcb4057 JH |
90 | int main(int argc, char **argv) |
91 | { | |
92 | char *commit_id; | |
93 | int arg = 1; | |
94 | ||
95 | while (arg < argc && argv[arg][0] == '-') { | |
96 | if (argv[arg][1] == 't') | |
97 | get_tree = 1; | |
98 | else if (argv[arg][1] == 'c') | |
99 | get_history = 1; | |
4a62b619 JH |
100 | else if (argv[arg][1] == 'd') |
101 | get_delta = 0; | |
a48e1d67 JH |
102 | else if (!strcmp(argv[arg], "--recover")) |
103 | get_delta = 2; | |
dfcb4057 JH |
104 | else if (argv[arg][1] == 'a') { |
105 | get_all = 1; | |
106 | get_tree = 1; | |
107 | get_history = 1; | |
108 | } | |
109 | else if (argv[arg][1] == 'l') | |
110 | use_link = 1; | |
111 | else if (argv[arg][1] == 's') | |
112 | use_symlink = 1; | |
b02a26cb JH |
113 | else if (argv[arg][1] == 'n') |
114 | use_filecopy = 0; | |
dfcb4057 | 115 | else if (argv[arg][1] == 'v') |
e78d9772 | 116 | get_verbosely = 1; |
dfcb4057 JH |
117 | else |
118 | usage(local_pull_usage); | |
119 | arg++; | |
120 | } | |
121 | if (argc < arg + 2) | |
122 | usage(local_pull_usage); | |
123 | commit_id = argv[arg]; | |
124 | path = argv[arg + 1]; | |
125 | ||
126 | if (pull(commit_id)) | |
127 | return 1; | |
128 | ||
129 | return 0; | |
130 | } |