projects / thirdparty / git.git / blame
| Commit | Line | Data |
|---|---|---|
| 4250a5e5 DB |
1 | #include "pull.h" |
| 2 | ||
| 3 | #include "cache.h" | |
| 4 | #include "commit.h" | |
| 5 | #include "tree.h" | |
| 6 | ||
| 7 | int get_tree = 0; | |
| 8 | int get_history = 0; | |
| 9 | int get_all = 0; | |
| b2d62f16 | 10 | static unsigned char current_commit_sha1[20]; |
| 4250a5e5 | 11 | |
| b2d62f16 JH |
12 | static const char commitS[] = "commit"; |
| 13 | static const char treeS[] = "tree"; | |
| 14 | static const char blobS[] = "blob"; | |
| 15 | ||
| 16 | static void report_missing(const char *what, const unsigned char *missing) | |
| 17 | { | |
| 18 | char missing_hex[41]; | |
| 19 | ||
| 20 | strcpy(missing_hex, sha1_to_hex(missing));; | |
| 21 | fprintf(stderr, | |
| 22 | "Cannot obtain needed %s %s\nwhile processing commit %s.\n", | |
| 23 | what, missing_hex, sha1_to_hex(current_commit_sha1)); | |
| 24 | } | |
| 25 | ||
| 26 | static int make_sure_we_have_it(const char *what, unsigned char *sha1) | |
| ee4f439f | 27 | { |
| b2d62f16 | 28 | int status; |
| ee4f439f JH |
29 | if (has_sha1_file(sha1)) |
| 30 | return 0; | |
| b2d62f16 JH |
31 | status = fetch(sha1); |
| 32 | if (status && what) | |
| 33 | report_missing(what, sha1); | |
| 34 | return status; | |
| ee4f439f JH |
35 | } |
| 36 | ||
| 4250a5e5 DB |
37 | static int process_tree(unsigned char *sha1) |
| 38 | { | |
| 39 | struct tree *tree = lookup_tree(sha1); | |
| 40 | struct tree_entry_list *entries; | |
| 41 | ||
| 42 | if (parse_tree(tree)) | |
| 43 | return -1; | |
| 44 | ||
| 45 | for (entries = tree->entries; entries; entries = entries->next) { | |
| b2d62f16 JH |
46 | const char *what = entries->directory ? treeS : blobS; |
| 47 | if (make_sure_we_have_it(what, entries->item.tree->object.sha1)) | |
| 4250a5e5 DB |
48 | return -1; |
| 49 | if (entries->directory) { | |
| 50 | if (process_tree(entries->item.tree->object.sha1)) | |
| 51 | return -1; | |
| 52 | } | |
| 53 | } | |
| 54 | return 0; | |
| 55 | } | |
| 56 | ||
| 57 | static int process_commit(unsigned char *sha1) | |
| 58 | { | |
| 59 | struct commit *obj = lookup_commit(sha1); | |
| 60 | ||
| b2d62f16 | 61 | if (make_sure_we_have_it(commitS, sha1)) |
| 4250a5e5 DB |
62 | return -1; |
| 63 | ||
| 64 | if (parse_commit(obj)) | |
| 65 | return -1; | |
| 66 | ||
| 67 | if (get_tree) { | |
| b2d62f16 | 68 | if (make_sure_we_have_it(treeS, obj->tree->object.sha1)) |
| 4250a5e5 DB |
69 | return -1; |
| 70 | if (process_tree(obj->tree->object.sha1)) | |
| 71 | return -1; | |
| 72 | if (!get_all) | |
| 73 | get_tree = 0; | |
| 74 | } | |
| 75 | if (get_history) { | |
| 76 | struct commit_list *parents = obj->parents; | |
| 77 | for (; parents; parents = parents->next) { | |
| 78 | if (has_sha1_file(parents->item->object.sha1)) | |
| 79 | continue; | |
| b2d62f16 JH |
80 | if (make_sure_we_have_it(NULL, |
| 81 | parents->item->object.sha1)) { | |
| 4250a5e5 DB |
82 | /* The server might not have it, and |
| 83 | * we don't mind. | |
| 84 | */ | |
| 85 | continue; | |
| 86 | } | |
| 87 | if (process_commit(parents->item->object.sha1)) | |
| 88 | return -1; | |
| b2d62f16 | 89 | memcpy(current_commit_sha1, sha1, 20); |
| 4250a5e5 DB |
90 | } |
| 91 | } | |
| 92 | return 0; | |
| 93 | } | |
| 94 | ||
| 95 | int pull(char *target) | |
| 96 | { | |
| 97 | int retval; | |
| 98 | unsigned char sha1[20]; | |
| 99 | retval = get_sha1_hex(target, sha1); | |
| 100 | if (retval) | |
| 101 | return retval; | |
| b2d62f16 | 102 | retval = make_sure_we_have_it(commitS, sha1); |
| 4250a5e5 DB |
103 | if (retval) |
| 104 | return retval; | |
| b2d62f16 | 105 | memcpy(current_commit_sha1, sha1, 20); |
| 4250a5e5 DB |
106 | return process_commit(sha1); |
| 107 | } |