t5500 & t7403: lose bash-ism "local"
[git/git.git] / builtin / submodule--helper.c
1 #include "builtin.h"
2 #include "cache.h"
3 #include "parse-options.h"
4 #include "quote.h"
5 #include "pathspec.h"
6 #include "dir.h"
7 #include "utf8.h"
8 #include "submodule.h"
9 #include "submodule-config.h"
10 #include "string-list.h"
11 #include "run-command.h"
12
13 struct module_list {
14 const struct cache_entry **entries;
15 int alloc, nr;
16 };
17 #define MODULE_LIST_INIT { NULL, 0, 0 }
18
19 static int module_list_compute(int argc, const char **argv,
20 const char *prefix,
21 struct pathspec *pathspec,
22 struct module_list *list)
23 {
24 int i, result = 0;
25 char *ps_matched = NULL;
26 parse_pathspec(pathspec, 0,
27 PATHSPEC_PREFER_FULL |
28 PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP,
29 prefix, argv);
30
31 if (pathspec->nr)
32 ps_matched = xcalloc(pathspec->nr, 1);
33
34 if (read_cache() < 0)
35 die(_("index file corrupt"));
36
37 for (i = 0; i < active_nr; i++) {
38 const struct cache_entry *ce = active_cache[i];
39
40 if (!match_pathspec(pathspec, ce->name, ce_namelen(ce),
41 0, ps_matched, 1) ||
42 !S_ISGITLINK(ce->ce_mode))
43 continue;
44
45 ALLOC_GROW(list->entries, list->nr + 1, list->alloc);
46 list->entries[list->nr++] = ce;
47 while (i + 1 < active_nr &&
48 !strcmp(ce->name, active_cache[i + 1]->name))
49 /*
50 * Skip entries with the same name in different stages
51 * to make sure an entry is returned only once.
52 */
53 i++;
54 }
55
56 if (ps_matched && report_path_error(ps_matched, pathspec, prefix))
57 result = -1;
58
59 free(ps_matched);
60
61 return result;
62 }
63
64 static int module_list(int argc, const char **argv, const char *prefix)
65 {
66 int i;
67 struct pathspec pathspec;
68 struct module_list list = MODULE_LIST_INIT;
69
70 struct option module_list_options[] = {
71 OPT_STRING(0, "prefix", &prefix,
72 N_("path"),
73 N_("alternative anchor for relative paths")),
74 OPT_END()
75 };
76
77 const char *const git_submodule_helper_usage[] = {
78 N_("git submodule--helper list [--prefix=<path>] [<path>...]"),
79 NULL
80 };
81
82 argc = parse_options(argc, argv, prefix, module_list_options,
83 git_submodule_helper_usage, 0);
84
85 if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0) {
86 printf("#unmatched\n");
87 return 1;
88 }
89
90 for (i = 0; i < list.nr; i++) {
91 const struct cache_entry *ce = list.entries[i];
92
93 if (ce_stage(ce))
94 printf("%06o %s U\t", ce->ce_mode, sha1_to_hex(null_sha1));
95 else
96 printf("%06o %s %d\t", ce->ce_mode, sha1_to_hex(ce->sha1), ce_stage(ce));
97
98 utf8_fprintf(stdout, "%s\n", ce->name);
99 }
100 return 0;
101 }
102
103 static int module_name(int argc, const char **argv, const char *prefix)
104 {
105 const struct submodule *sub;
106
107 if (argc != 2)
108 usage(_("git submodule--helper name <path>"));
109
110 gitmodules_config();
111 sub = submodule_from_path(null_sha1, argv[1]);
112
113 if (!sub)
114 die(_("no submodule mapping found in .gitmodules for path '%s'"),
115 argv[1]);
116
117 printf("%s\n", sub->name);
118
119 return 0;
120 }
121 static int clone_submodule(const char *path, const char *gitdir, const char *url,
122 const char *depth, const char *reference, int quiet)
123 {
124 struct child_process cp;
125 child_process_init(&cp);
126
127 argv_array_push(&cp.args, "clone");
128 argv_array_push(&cp.args, "--no-checkout");
129 if (quiet)
130 argv_array_push(&cp.args, "--quiet");
131 if (depth && *depth)
132 argv_array_pushl(&cp.args, "--depth", depth, NULL);
133 if (reference && *reference)
134 argv_array_pushl(&cp.args, "--reference", reference, NULL);
135 if (gitdir && *gitdir)
136 argv_array_pushl(&cp.args, "--separate-git-dir", gitdir, NULL);
137
138 argv_array_push(&cp.args, url);
139 argv_array_push(&cp.args, path);
140
141 cp.git_cmd = 1;
142 cp.env = local_repo_env;
143 cp.no_stdin = 1;
144
145 return run_command(&cp);
146 }
147
148 static int module_clone(int argc, const char **argv, const char *prefix)
149 {
150 const char *name = NULL, *url = NULL;
151 const char *reference = NULL, *depth = NULL;
152 int quiet = 0;
153 FILE *submodule_dot_git;
154 char *p, *path = NULL, *sm_gitdir;
155 struct strbuf rel_path = STRBUF_INIT;
156 struct strbuf sb = STRBUF_INIT;
157
158 struct option module_clone_options[] = {
159 OPT_STRING(0, "prefix", &prefix,
160 N_("path"),
161 N_("alternative anchor for relative paths")),
162 OPT_STRING(0, "path", &path,
163 N_("path"),
164 N_("where the new submodule will be cloned to")),
165 OPT_STRING(0, "name", &name,
166 N_("string"),
167 N_("name of the new submodule")),
168 OPT_STRING(0, "url", &url,
169 N_("string"),
170 N_("url where to clone the submodule from")),
171 OPT_STRING(0, "reference", &reference,
172 N_("string"),
173 N_("reference repository")),
174 OPT_STRING(0, "depth", &depth,
175 N_("string"),
176 N_("depth for shallow clones")),
177 OPT__QUIET(&quiet, "Suppress output for cloning a submodule"),
178 OPT_END()
179 };
180
181 const char *const git_submodule_helper_usage[] = {
182 N_("git submodule--helper clone [--prefix=<path>] [--quiet] "
183 "[--reference <repository>] [--name <name>] [--url <url>]"
184 "[--depth <depth>] [--] [<path>...]"),
185 NULL
186 };
187
188 argc = parse_options(argc, argv, prefix, module_clone_options,
189 git_submodule_helper_usage, 0);
190
191 if (!path || !*path)
192 die(_("submodule--helper: unspecified or empty --path"));
193
194 strbuf_addf(&sb, "%s/modules/%s", get_git_dir(), name);
195 sm_gitdir = xstrdup(absolute_path(sb.buf));
196 strbuf_reset(&sb);
197
198 if (!is_absolute_path(path)) {
199 strbuf_addf(&sb, "%s/%s", get_git_work_tree(), path);
200 path = strbuf_detach(&sb, NULL);
201 } else
202 path = xstrdup(path);
203
204 if (!file_exists(sm_gitdir)) {
205 if (safe_create_leading_directories_const(sm_gitdir) < 0)
206 die(_("could not create directory '%s'"), sm_gitdir);
207 if (clone_submodule(path, sm_gitdir, url, depth, reference, quiet))
208 die(_("clone of '%s' into submodule path '%s' failed"),
209 url, path);
210 } else {
211 if (safe_create_leading_directories_const(path) < 0)
212 die(_("could not create directory '%s'"), path);
213 strbuf_addf(&sb, "%s/index", sm_gitdir);
214 unlink_or_warn(sb.buf);
215 strbuf_reset(&sb);
216 }
217
218 /* Write a .git file in the submodule to redirect to the superproject. */
219 strbuf_addf(&sb, "%s/.git", path);
220 if (safe_create_leading_directories_const(sb.buf) < 0)
221 die(_("could not create leading directories of '%s'"), sb.buf);
222 submodule_dot_git = fopen(sb.buf, "w");
223 if (!submodule_dot_git)
224 die_errno(_("cannot open file '%s'"), sb.buf);
225
226 fprintf_or_die(submodule_dot_git, "gitdir: %s\n",
227 relative_path(sm_gitdir, path, &rel_path));
228 if (fclose(submodule_dot_git))
229 die(_("could not close file %s"), sb.buf);
230 strbuf_reset(&sb);
231 strbuf_reset(&rel_path);
232
233 /* Redirect the worktree of the submodule in the superproject's config */
234 p = git_pathdup_submodule(path, "config");
235 if (!p)
236 die(_("could not get submodule directory for '%s'"), path);
237 git_config_set_in_file(p, "core.worktree",
238 relative_path(path, sm_gitdir, &rel_path));
239 strbuf_release(&sb);
240 strbuf_release(&rel_path);
241 free(sm_gitdir);
242 free(path);
243 free(p);
244 return 0;
245 }
246
247 struct cmd_struct {
248 const char *cmd;
249 int (*fn)(int, const char **, const char *);
250 };
251
252 static struct cmd_struct commands[] = {
253 {"list", module_list},
254 {"name", module_name},
255 {"clone", module_clone},
256 };
257
258 int cmd_submodule__helper(int argc, const char **argv, const char *prefix)
259 {
260 int i;
261 if (argc < 2)
262 die(_("fatal: submodule--helper subcommand must be "
263 "called with a subcommand"));
264
265 for (i = 0; i < ARRAY_SIZE(commands); i++)
266 if (!strcmp(argv[1], commands[i].cmd))
267 return commands[i].fn(argc - 1, argv + 1, prefix);
268
269 die(_("fatal: '%s' is not a valid submodule--helper "
270 "subcommand"), argv[1]);
271 }