2 7b19e0f1 2017-11-05 stsp * Copyright (c) 2017 Stefan Sperling <stsp@openbsd.org>
4 7b19e0f1 2017-11-05 stsp * Permission to use, copy, modify, and distribute this software for any
5 7b19e0f1 2017-11-05 stsp * purpose with or without fee is hereby granted, provided that the above
6 7b19e0f1 2017-11-05 stsp * copyright notice and this permission notice appear in all copies.
8 7b19e0f1 2017-11-05 stsp * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 7b19e0f1 2017-11-05 stsp * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 7b19e0f1 2017-11-05 stsp * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 7b19e0f1 2017-11-05 stsp * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 7b19e0f1 2017-11-05 stsp * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 7b19e0f1 2017-11-05 stsp * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 7b19e0f1 2017-11-05 stsp * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 4027f31a 2017-11-04 stsp #include <assert.h>
18 4027f31a 2017-11-04 stsp #include <limits.h>
19 4027f31a 2017-11-04 stsp #include <stdlib.h>
20 4027f31a 2017-11-04 stsp #include <stdio.h>
21 4027f31a 2017-11-04 stsp #include <sha1.h>
22 4027f31a 2017-11-04 stsp #include <string.h>
24 4027f31a 2017-11-04 stsp #include "got_path.h"
25 4027f31a 2017-11-04 stsp #include "got_error.h"
26 4027f31a 2017-11-04 stsp #include "got_refs.h"
27 4027f31a 2017-11-04 stsp #include "got_repository.h"
29 4027f31a 2017-11-04 stsp #define GOT_GIT_DIR ".git"
31 4027f31a 2017-11-04 stsp /* Mandatory files and directories inside the git directory. */
32 4027f31a 2017-11-04 stsp #define GOT_OBJECTS_DIR "objects"
33 4027f31a 2017-11-04 stsp #define GOT_REFS_DIR "refs"
34 4027f31a 2017-11-04 stsp #define GOT_HEAD_FILE "HEAD"
36 4027f31a 2017-11-04 stsp static char *
37 4027f31a 2017-11-04 stsp get_path_git_dir(struct got_repository *repo)
39 4027f31a 2017-11-04 stsp char *path_git;
41 4027f31a 2017-11-04 stsp if (asprintf(&path_git, "%s/%s", repo->path, GOT_GIT_DIR) == -1)
42 4027f31a 2017-11-04 stsp return NULL;
44 4027f31a 2017-11-04 stsp return path_git;
47 4027f31a 2017-11-04 stsp static char *
48 4027f31a 2017-11-04 stsp get_path_git_child(struct got_repository *repo, const char *basename)
50 4027f31a 2017-11-04 stsp char *path_child;
52 4027f31a 2017-11-04 stsp if (asprintf(&path_child, "%s/%s/%s", repo->path, GOT_GIT_DIR,
53 4027f31a 2017-11-04 stsp basename) == -1)
54 4027f31a 2017-11-04 stsp return NULL;
56 4027f31a 2017-11-04 stsp return path_child;
59 4027f31a 2017-11-04 stsp static char *
60 4027f31a 2017-11-04 stsp get_path_objects(struct got_repository *repo)
62 4027f31a 2017-11-04 stsp return get_path_git_child(repo, GOT_OBJECTS_DIR);
65 4027f31a 2017-11-04 stsp static char *
66 4027f31a 2017-11-04 stsp get_path_refs(struct got_repository *repo)
68 4027f31a 2017-11-04 stsp return get_path_git_child(repo, GOT_REFS_DIR);
71 4027f31a 2017-11-04 stsp static char *
72 4027f31a 2017-11-04 stsp get_path_head(struct got_repository *repo)
74 4027f31a 2017-11-04 stsp return get_path_git_child(repo, GOT_HEAD_FILE);
78 4027f31a 2017-11-04 stsp is_git_repo(struct got_repository *repo)
80 4027f31a 2017-11-04 stsp char *path_git = get_path_git_dir(repo);
81 4027f31a 2017-11-04 stsp char *path_objects = get_path_objects(repo);
82 4027f31a 2017-11-04 stsp char *path_refs = get_path_refs(repo);
83 4027f31a 2017-11-04 stsp char *path_head = get_path_head(repo);
86 4027f31a 2017-11-04 stsp ret = (path_git != NULL) && (path_objects != NULL) &&
87 4027f31a 2017-11-04 stsp (path_refs != NULL) && (path_head != NULL);
89 4027f31a 2017-11-04 stsp free(path_git);
90 4027f31a 2017-11-04 stsp free(path_objects);
91 4027f31a 2017-11-04 stsp free(path_refs);
92 4027f31a 2017-11-04 stsp free(path_head);
97 4027f31a 2017-11-04 stsp const struct got_error *
98 4027f31a 2017-11-04 stsp got_repo_open(struct got_repository **ret, const char *abspath)
100 4027f31a 2017-11-04 stsp struct got_repository *repo;
102 4027f31a 2017-11-04 stsp if (!got_path_is_absolute(abspath))
103 4027f31a 2017-11-04 stsp return got_error(GOT_ERR_NOT_ABSPATH);
105 4027f31a 2017-11-04 stsp repo = calloc(1, sizeof(*repo));
106 4027f31a 2017-11-04 stsp if (repo == NULL)
107 4027f31a 2017-11-04 stsp return got_error(GOT_ERR_NO_MEM);
109 4027f31a 2017-11-04 stsp repo->path = got_path_normalize(abspath);
110 4027f31a 2017-11-04 stsp if (repo->path == NULL)
111 4027f31a 2017-11-04 stsp return got_error(GOT_ERR_BAD_PATH);
113 4027f31a 2017-11-04 stsp if (!is_git_repo(repo))
114 4027f31a 2017-11-04 stsp return got_error(GOT_ERR_NOT_GIT_REPO);
116 4027f31a 2017-11-04 stsp *ret = repo;
117 4027f31a 2017-11-04 stsp return NULL;
121 4027f31a 2017-11-04 stsp got_repo_close(struct got_repository *repo)
123 4027f31a 2017-11-04 stsp free(repo->path);
124 4027f31a 2017-11-04 stsp free(repo);
127 4027f31a 2017-11-04 stsp const char *
128 4027f31a 2017-11-04 stsp got_repo_get_path(struct got_repository *repo)
130 4027f31a 2017-11-04 stsp return repo->path;
133 4027f31a 2017-11-04 stsp const struct got_error *
134 4027f31a 2017-11-04 stsp got_repo_get_reference(struct got_reference **ref,
135 4027f31a 2017-11-04 stsp struct got_repository *repo, const char *refname)
137 4027f31a 2017-11-04 stsp const struct got_error *err = NULL;
138 4027f31a 2017-11-04 stsp char *path_refs;
140 4027f31a 2017-11-04 stsp /* Some refs live in the .git directory. */
141 4027f31a 2017-11-04 stsp if (strcmp(refname, GOT_REF_HEAD) == 0)
142 4027f31a 2017-11-04 stsp path_refs = get_path_git_dir(repo);
144 4027f31a 2017-11-04 stsp path_refs = get_path_refs(repo);
146 4027f31a 2017-11-04 stsp err = got_ref_open(ref, path_refs, refname);
147 4027f31a 2017-11-04 stsp free(path_refs);
148 4027f31a 2017-11-04 stsp return err;
