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add a pack index cache; speeds tree listing up quite a lot
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  1 7b19e0f1 2017-11-05 stsp /*

  2 3b339b2f 2018-02-12 stsp  * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>

  3 7b19e0f1 2017-11-05 stsp  *

  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.

  7 7b19e0f1 2017-11-05 stsp  *

  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.

 15 7b19e0f1 2017-11-05 stsp  */

 16 7b19e0f1 2017-11-05 stsp 

 17 79b11c62 2018-03-09 stsp #include <sys/queue.h>

 18 79b11c62 2018-03-09 stsp 

 19 4027f31a 2017-11-04 stsp #include <limits.h>

 20 4027f31a 2017-11-04 stsp #include <stdlib.h>

 21 4027f31a 2017-11-04 stsp #include <stdio.h>

 22 4027f31a 2017-11-04 stsp #include <sha1.h>

 23 4027f31a 2017-11-04 stsp #include <string.h>

 24 79b11c62 2018-03-09 stsp #include <zlib.h>

 25 4027f31a 2017-11-04 stsp 

 26 4027f31a 2017-11-04 stsp #include "got_error.h"

 27 4027f31a 2017-11-04 stsp #include "got_refs.h"

 28 4027f31a 2017-11-04 stsp #include "got_repository.h"

 29 4027f31a 2017-11-04 stsp 

 30 1411938b 2018-02-12 stsp #include "got_path_priv.h"

 31 79b11c62 2018-03-09 stsp #include "got_repository_priv.h"

 32 79b11c62 2018-03-09 stsp #include "got_zb_priv.h"

 33 79b11c62 2018-03-09 stsp #include "got_delta_priv.h"

 34 79b11c62 2018-03-09 stsp #include "got_object_priv.h"

 35 79b11c62 2018-03-09 stsp #include "got_pack_priv.h"

 36 c3f94f68 2017-11-05 stsp 

 37 79b11c62 2018-03-09 stsp #ifndef nitems

 38 79b11c62 2018-03-09 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))

 39 79b11c62 2018-03-09 stsp #endif

 40 3b339b2f 2018-02-12 stsp 

 41 4027f31a 2017-11-04 stsp #define GOT_GIT_DIR	".git"

 42 4027f31a 2017-11-04 stsp 

 43 4027f31a 2017-11-04 stsp /* Mandatory files and directories inside the git directory. */

 44 4df642d9 2017-11-05 stsp #define GOT_OBJECTS_DIR		"objects"

 45 4df642d9 2017-11-05 stsp #define GOT_REFS_DIR		"refs"

 46 4df642d9 2017-11-05 stsp #define GOT_HEAD_FILE		"HEAD"

 47 4027f31a 2017-11-04 stsp 

 48 a1fd68d8 2018-01-12 stsp /* Other files and directories inside the git directory. */

 49 4df642d9 2017-11-05 stsp #define GOT_FETCH_HEAD_FILE	"FETCH_HEAD"

 50 4df642d9 2017-11-05 stsp #define GOT_ORIG_HEAD_FILE	"ORIG_HEAD"

 51 a1fd68d8 2018-01-12 stsp #define GOT_OBJECTS_PACK_DIR	"objects/pack"

 52 4df642d9 2017-11-05 stsp 

 53 11995603 2017-11-05 stsp char *

 54 11995603 2017-11-05 stsp got_repo_get_path_git_dir(struct got_repository *repo)

 55 4027f31a 2017-11-04 stsp {

 56 4027f31a 2017-11-04 stsp 	char *path_git;

 57 4027f31a 2017-11-04 stsp 	

 58 4027f31a 2017-11-04 stsp 	if (asprintf(&path_git, "%s/%s", repo->path, GOT_GIT_DIR) == -1)

 59 4027f31a 2017-11-04 stsp 		return NULL;

 60 4027f31a 2017-11-04 stsp 

 61 4027f31a 2017-11-04 stsp 	return path_git;

 62 4027f31a 2017-11-04 stsp }

 63 4027f31a 2017-11-04 stsp 

 64 4027f31a 2017-11-04 stsp static char *

 65 4027f31a 2017-11-04 stsp get_path_git_child(struct got_repository *repo, const char *basename)

 66 4027f31a 2017-11-04 stsp {

 67 4027f31a 2017-11-04 stsp 	char *path_child;

 68 4027f31a 2017-11-04 stsp 	

 69 4027f31a 2017-11-04 stsp 	if (asprintf(&path_child, "%s/%s/%s", repo->path, GOT_GIT_DIR,

 70 4027f31a 2017-11-04 stsp 	    basename) == -1)

 71 4027f31a 2017-11-04 stsp 		return NULL;

 72 4027f31a 2017-11-04 stsp 

 73 4027f31a 2017-11-04 stsp 	return path_child;

 74 4027f31a 2017-11-04 stsp }

 75 4027f31a 2017-11-04 stsp 

 76 11995603 2017-11-05 stsp char *

 77 11995603 2017-11-05 stsp got_repo_get_path_objects(struct got_repository *repo)

 78 4027f31a 2017-11-04 stsp {

 79 4027f31a 2017-11-04 stsp 	return get_path_git_child(repo, GOT_OBJECTS_DIR);

 80 4027f31a 2017-11-04 stsp }

 81 4027f31a 2017-11-04 stsp 

 82 11995603 2017-11-05 stsp char *

 83 a1fd68d8 2018-01-12 stsp got_repo_get_path_objects_pack(struct got_repository *repo)

 84 a1fd68d8 2018-01-12 stsp {

 85 a1fd68d8 2018-01-12 stsp 	return get_path_git_child(repo, GOT_OBJECTS_PACK_DIR);

 86 a1fd68d8 2018-01-12 stsp }

 87 a1fd68d8 2018-01-12 stsp 

 88 a1fd68d8 2018-01-12 stsp char *

 89 11995603 2017-11-05 stsp got_repo_get_path_refs(struct got_repository *repo)

 90 4027f31a 2017-11-04 stsp {

 91 4027f31a 2017-11-04 stsp 	return get_path_git_child(repo, GOT_REFS_DIR);

 92 4027f31a 2017-11-04 stsp }

 93 4027f31a 2017-11-04 stsp 

 94 4027f31a 2017-11-04 stsp static char *

 95 4027f31a 2017-11-04 stsp get_path_head(struct got_repository *repo)

 96 4027f31a 2017-11-04 stsp {

 97 4027f31a 2017-11-04 stsp 	return get_path_git_child(repo, GOT_HEAD_FILE);

 98 4027f31a 2017-11-04 stsp }

 99 4027f31a 2017-11-04 stsp 

100 4027f31a 2017-11-04 stsp static int

101 4027f31a 2017-11-04 stsp is_git_repo(struct got_repository *repo)

102 4027f31a 2017-11-04 stsp {

103 11995603 2017-11-05 stsp 	char *path_git = got_repo_get_path_git_dir(repo);

104 11995603 2017-11-05 stsp 	char *path_objects = got_repo_get_path_objects(repo);

105 11995603 2017-11-05 stsp 	char *path_refs = got_repo_get_path_refs(repo);

106 4027f31a 2017-11-04 stsp 	char *path_head = get_path_head(repo);

107 4027f31a 2017-11-04 stsp 	int ret;

108 4027f31a 2017-11-04 stsp 

109 4027f31a 2017-11-04 stsp 	ret = (path_git != NULL) && (path_objects != NULL) &&

110 4027f31a 2017-11-04 stsp 	    (path_refs != NULL) && (path_head != NULL);

111 4027f31a 2017-11-04 stsp 

112 4027f31a 2017-11-04 stsp 	free(path_git);

113 4027f31a 2017-11-04 stsp 	free(path_objects);

114 4027f31a 2017-11-04 stsp 	free(path_refs);

115 4027f31a 2017-11-04 stsp 	free(path_head);

116 4027f31a 2017-11-04 stsp 	return ret;

117 4027f31a 2017-11-04 stsp 

118 4027f31a 2017-11-04 stsp }

119 4027f31a 2017-11-04 stsp 

120 4027f31a 2017-11-04 stsp const struct got_error *

121 92af5469 2017-11-05 stsp got_repo_open(struct got_repository **ret, const char *path)

122 4027f31a 2017-11-04 stsp {

123 92af5469 2017-11-05 stsp 	struct got_repository *repo = NULL;

124 92af5469 2017-11-05 stsp 	const struct got_error *err = NULL;

125 2393f13b 2018-03-09 stsp 	char *abspath;

126 4027f31a 2017-11-04 stsp 

127 2393f13b 2018-03-09 stsp 	if (got_path_is_absolute(path))

128 2393f13b 2018-03-09 stsp 		abspath = strdup(path);

129 2393f13b 2018-03-09 stsp 	else

130 2393f13b 2018-03-09 stsp 		abspath = got_path_get_absolute(path);

131 92af5469 2017-11-05 stsp 	if (abspath == NULL)

132 92af5469 2017-11-05 stsp 		return got_error(GOT_ERR_BAD_PATH);

133 4027f31a 2017-11-04 stsp 

134 4027f31a 2017-11-04 stsp 	repo = calloc(1, sizeof(*repo));

135 92af5469 2017-11-05 stsp 	if (repo == NULL) {

136 92af5469 2017-11-05 stsp 		err = got_error(GOT_ERR_NO_MEM);

137 92af5469 2017-11-05 stsp 		goto done;

138 92af5469 2017-11-05 stsp 	}

139 4027f31a 2017-11-04 stsp 

140 4027f31a 2017-11-04 stsp 	repo->path = got_path_normalize(abspath);

141 92af5469 2017-11-05 stsp 	if (repo->path == NULL) {

142 92af5469 2017-11-05 stsp 		err = got_error(GOT_ERR_BAD_PATH);

143 92af5469 2017-11-05 stsp 		goto done;

144 92af5469 2017-11-05 stsp 	}

145 4027f31a 2017-11-04 stsp 

146 92af5469 2017-11-05 stsp 	if (!is_git_repo(repo)) {

147 92af5469 2017-11-05 stsp 		err = got_error(GOT_ERR_NOT_GIT_REPO);

148 92af5469 2017-11-05 stsp 		goto done;

149 92af5469 2017-11-05 stsp 	}

150 4027f31a 2017-11-04 stsp 		

151 4027f31a 2017-11-04 stsp 	*ret = repo;

152 92af5469 2017-11-05 stsp done:

153 92af5469 2017-11-05 stsp 	if (err)

154 92af5469 2017-11-05 stsp 		free(repo);

155 92af5469 2017-11-05 stsp 	free(abspath);

156 92af5469 2017-11-05 stsp 	return err;

157 4027f31a 2017-11-04 stsp }

158 4027f31a 2017-11-04 stsp 

159 4027f31a 2017-11-04 stsp void

160 4027f31a 2017-11-04 stsp got_repo_close(struct got_repository *repo)

161 4027f31a 2017-11-04 stsp {

162 79b11c62 2018-03-09 stsp 	int i;

163 79b11c62 2018-03-09 stsp 

164 79b11c62 2018-03-09 stsp 	for (i = 0; i < nitems(repo->packidx_cache); i++) {

165 79b11c62 2018-03-09 stsp 		if (repo->packidx_cache[i] == NULL)

166 79b11c62 2018-03-09 stsp 			break;

167 79b11c62 2018-03-09 stsp 		got_packidx_close(repo->packidx_cache[i]);

168 79b11c62 2018-03-09 stsp 	}

169 4027f31a 2017-11-04 stsp 	free(repo->path);

170 4027f31a 2017-11-04 stsp 	free(repo);

171 4027f31a 2017-11-04 stsp }