diff options
Diffstat (limited to 'builtin/submodule--helper.c')
| -rw-r--r-- | builtin/submodule--helper.c | 282 |
1 files changed, 282 insertions, 0 deletions
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c new file mode 100644 index 0000000000..f4c3eff179 --- /dev/null +++ b/builtin/submodule--helper.c @@ -0,0 +1,282 @@ +#include "builtin.h" +#include "cache.h" +#include "parse-options.h" +#include "quote.h" +#include "pathspec.h" +#include "dir.h" +#include "utf8.h" +#include "submodule.h" +#include "submodule-config.h" +#include "string-list.h" +#include "run-command.h" + +struct module_list { + const struct cache_entry **entries; + int alloc, nr; +}; +#define MODULE_LIST_INIT { NULL, 0, 0 } + +static int module_list_compute(int argc, const char **argv, + const char *prefix, + struct pathspec *pathspec, + struct module_list *list) +{ + int i, result = 0; + char *max_prefix, *ps_matched = NULL; + int max_prefix_len; + parse_pathspec(pathspec, 0, + PATHSPEC_PREFER_FULL | + PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP, + prefix, argv); + + /* Find common prefix for all pathspec's */ + max_prefix = common_prefix(pathspec); + max_prefix_len = max_prefix ? strlen(max_prefix) : 0; + + if (pathspec->nr) + ps_matched = xcalloc(pathspec->nr, 1); + + if (read_cache() < 0) + die(_("index file corrupt")); + + for (i = 0; i < active_nr; i++) { + const struct cache_entry *ce = active_cache[i]; + + if (!S_ISGITLINK(ce->ce_mode) || + !match_pathspec(pathspec, ce->name, ce_namelen(ce), + max_prefix_len, ps_matched, 1)) + continue; + + ALLOC_GROW(list->entries, list->nr + 1, list->alloc); + list->entries[list->nr++] = ce; + while (i + 1 < active_nr && + !strcmp(ce->name, active_cache[i + 1]->name)) + /* + * Skip entries with the same name in different stages + * to make sure an entry is returned only once. + */ + i++; + } + free(max_prefix); + + if (ps_matched && report_path_error(ps_matched, pathspec, prefix)) + result = -1; + + free(ps_matched); + + return result; +} + +static int module_list(int argc, const char **argv, const char *prefix) +{ + int i; + struct pathspec pathspec; + struct module_list list = MODULE_LIST_INIT; + + struct option module_list_options[] = { + OPT_STRING(0, "prefix", &prefix, + N_("path"), + N_("alternative anchor for relative paths")), + OPT_END() + }; + + const char *const git_submodule_helper_usage[] = { + N_("git submodule--helper list [--prefix=<path>] [<path>...]"), + NULL + }; + + argc = parse_options(argc, argv, prefix, module_list_options, + git_submodule_helper_usage, 0); + + if (module_list_compute(argc, argv, prefix, &pathspec, &list) < 0) { + printf("#unmatched\n"); + return 1; + } + + for (i = 0; i < list.nr; i++) { + const struct cache_entry *ce = list.entries[i]; + + if (ce_stage(ce)) + printf("%06o %s U\t", ce->ce_mode, sha1_to_hex(null_sha1)); + else + printf("%06o %s %d\t", ce->ce_mode, sha1_to_hex(ce->sha1), ce_stage(ce)); + + utf8_fprintf(stdout, "%s\n", ce->name); + } + return 0; +} + +static int module_name(int argc, const char **argv, const char *prefix) +{ + const struct submodule *sub; + + if (argc != 2) + usage(_("git submodule--helper name <path>")); + + gitmodules_config(); + sub = submodule_from_path(null_sha1, argv[1]); + + if (!sub) + die(_("no submodule mapping found in .gitmodules for path '%s'"), + argv[1]); + + printf("%s\n", sub->name); + + return 0; +} +static int clone_submodule(const char *path, const char *gitdir, const char *url, + const char *depth, const char *reference, int quiet) +{ + struct child_process cp; + child_process_init(&cp); + + argv_array_push(&cp.args, "clone"); + argv_array_push(&cp.args, "--no-checkout"); + if (quiet) + argv_array_push(&cp.args, "--quiet"); + if (depth && *depth) + argv_array_pushl(&cp.args, "--depth", depth, NULL); + if (reference && *reference) + argv_array_pushl(&cp.args, "--reference", reference, NULL); + if (gitdir && *gitdir) + argv_array_pushl(&cp.args, "--separate-git-dir", gitdir, NULL); + + argv_array_push(&cp.args, url); + argv_array_push(&cp.args, path); + + cp.git_cmd = 1; + cp.env = local_repo_env; + cp.no_stdin = 1; + + return run_command(&cp); +} + +static int module_clone(int argc, const char **argv, const char *prefix) +{ + const char *path = NULL, *name = NULL, *url = NULL; + const char *reference = NULL, *depth = NULL; + int quiet = 0; + FILE *submodule_dot_git; + char *sm_gitdir, *cwd, *p; + struct strbuf rel_path = STRBUF_INIT; + struct strbuf sb = STRBUF_INIT; + + struct option module_clone_options[] = { + OPT_STRING(0, "prefix", &prefix, + N_("path"), + N_("alternative anchor for relative paths")), + OPT_STRING(0, "path", &path, + N_("path"), + N_("where the new submodule will be cloned to")), + OPT_STRING(0, "name", &name, + N_("string"), + N_("name of the new submodule")), + OPT_STRING(0, "url", &url, + N_("string"), + N_("url where to clone the submodule from")), + OPT_STRING(0, "reference", &reference, + N_("string"), + N_("reference repository")), + OPT_STRING(0, "depth", &depth, + N_("string"), + N_("depth for shallow clones")), + OPT__QUIET(&quiet, "Suppress output for cloning a submodule"), + OPT_END() + }; + + const char *const git_submodule_helper_usage[] = { + N_("git submodule--helper clone [--prefix=<path>] [--quiet] " + "[--reference <repository>] [--name <name>] [--url <url>]" + "[--depth <depth>] [--] [<path>...]"), + NULL + }; + + argc = parse_options(argc, argv, prefix, module_clone_options, + git_submodule_helper_usage, 0); + + strbuf_addf(&sb, "%s/modules/%s", get_git_dir(), name); + sm_gitdir = strbuf_detach(&sb, NULL); + + if (!file_exists(sm_gitdir)) { + if (safe_create_leading_directories_const(sm_gitdir) < 0) + die(_("could not create directory '%s'"), sm_gitdir); + if (clone_submodule(path, sm_gitdir, url, depth, reference, quiet)) + die(_("clone of '%s' into submodule path '%s' failed"), + url, path); + } else { + if (safe_create_leading_directories_const(path) < 0) + die(_("could not create directory '%s'"), path); + strbuf_addf(&sb, "%s/index", sm_gitdir); + unlink_or_warn(sb.buf); + strbuf_reset(&sb); + } + + /* Write a .git file in the submodule to redirect to the superproject. */ + if (safe_create_leading_directories_const(path) < 0) + die(_("could not create directory '%s'"), path); + + if (path && *path) + strbuf_addf(&sb, "%s/.git", path); + else + strbuf_addstr(&sb, ".git"); + + if (safe_create_leading_directories_const(sb.buf) < 0) + die(_("could not create leading directories of '%s'"), sb.buf); + submodule_dot_git = fopen(sb.buf, "w"); + if (!submodule_dot_git) + die_errno(_("cannot open file '%s'"), sb.buf); + + fprintf(submodule_dot_git, "gitdir: %s\n", + relative_path(sm_gitdir, path, &rel_path)); + if (fclose(submodule_dot_git)) + die(_("could not close file %s"), sb.buf); + strbuf_reset(&sb); + strbuf_reset(&rel_path); + + cwd = xgetcwd(); + /* Redirect the worktree of the submodule in the superproject's config */ + if (!is_absolute_path(sm_gitdir)) { + strbuf_addf(&sb, "%s/%s", cwd, sm_gitdir); + free(sm_gitdir); + sm_gitdir = strbuf_detach(&sb, NULL); + } + + strbuf_addf(&sb, "%s/%s", cwd, path); + p = git_pathdup_submodule(path, "config"); + if (!p) + die(_("could not get submodule directory for '%s'"), path); + git_config_set_in_file(p, "core.worktree", + relative_path(sb.buf, sm_gitdir, &rel_path)); + strbuf_release(&sb); + strbuf_release(&rel_path); + free(sm_gitdir); + free(cwd); + free(p); + return 0; +} + +struct cmd_struct { + const char *cmd; + int (*fn)(int, const char **, const char *); +}; + +static struct cmd_struct commands[] = { + {"list", module_list}, + {"name", module_name}, + {"clone", module_clone}, +}; + +int cmd_submodule__helper(int argc, const char **argv, const char *prefix) +{ + int i; + if (argc < 2) + die(_("fatal: submodule--helper subcommand must be " + "called with a subcommand")); + + for (i = 0; i < ARRAY_SIZE(commands); i++) + if (!strcmp(argv[1], commands[i].cmd)) + return commands[i].fn(argc - 1, argv + 1, prefix); + + die(_("fatal: '%s' is not a valid submodule--helper " + "subcommand"), argv[1]); +} |