revision: introduce setup_revision_opt

diff --git a/builtin-init-db.c b/builtin-init-db.c
index 4a5600631c5800d7f9d844118f37c0672b89b581..dd84caecbc2a07bca90c8524157d50a8fd5ae316 100644 (file)
--- a/builtin-init-db.c
+++ b/builtin-init-db.c
@@ -6,6 +6,7 @@
 #include "cache.h"
 #include "builtin.h"
 #include "exec_cmd.h"
+#include "parse-options.h"
 
 #ifndef DEFAULT_GIT_TEMPLATE_DIR
 #define DEFAULT_GIT_TEMPLATE_DIR "/usr/share/git-core/templates"
@@ -370,8 +371,16 @@ static int guess_repository_type(const char *git_dir)
        return 1;
 }
 
-static const char init_db_usage[] =
-"git init [-q | --quiet] [--bare] [--template=<template-directory>] [--shared[=<permissions>]]";
+static int shared_callback(const struct option *opt, const char *arg, int unset)
+{
+       *((int *) opt->value) = (arg) ? git_config_perm("arg", arg) : PERM_GROUP;
+       return 0;
+}
+
+static const char *const init_db_usage[] = {
+       "git init [-q | --quiet] [--bare] [--template=<template-directory>] [--shared[=<permissions>]] [directory]",
+       NULL
+};
 
 /*
  * If you want to, you can share the DB area with any number of branches.
@@ -384,25 +393,60 @@ int cmd_init_db(int argc, const char **argv, const char *prefix)
        const char *git_dir;
        const char *template_dir = NULL;
        unsigned int flags = 0;
-       int i;
-
-       for (i = 1; i < argc; i++, argv++) {
-               const char *arg = argv[1];
-               if (!prefixcmp(arg, "--template="))
-                       template_dir = arg+11;
-               else if (!strcmp(arg, "--bare")) {
-                       static char git_dir[PATH_MAX+1];
-                       is_bare_repository_cfg = 1;
-                       setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir,
-                                               sizeof(git_dir)), 0);
-               } else if (!strcmp(arg, "--shared"))
-                       init_shared_repository = PERM_GROUP;
-               else if (!prefixcmp(arg, "--shared="))
-                       init_shared_repository = git_config_perm("arg", arg+9);
-               else if (!strcmp(arg, "-q") || !strcmp(arg, "--quiet"))
-                       flags |= INIT_DB_QUIET;
-               else
-                       usage(init_db_usage);
+       const struct option init_db_options[] = {
+               OPT_STRING(0, "template", &template_dir, "template-directory",
+                               "provide the directory from which templates will be used"),
+               OPT_SET_INT(0, "bare", &is_bare_repository_cfg,
+                               "create a bare repository", 1),
+               { OPTION_CALLBACK, 0, "shared", &init_shared_repository,
+                       "permissions",
+                       "specify that the git repository is to be shared amongst several users",
+                       PARSE_OPT_OPTARG | PARSE_OPT_NONEG, shared_callback, 0},
+               OPT_BIT('q', "quiet", &flags, "be quiet", INIT_DB_QUIET),
+               OPT_END()
+       };
+
+       argc = parse_options(argc, argv, prefix, init_db_options, init_db_usage, 0);
+
+       if (argc == 1) {
+               int mkdir_tried = 0;
+       retry:
+               if (chdir(argv[0]) < 0) {
+                       if (!mkdir_tried) {
+                               int saved;
+                               /*
+                                * At this point we haven't read any configuration,
+                                * and we know shared_repository should always be 0;
+                                * but just in case we play safe.
+                                */
+                               saved = shared_repository;
+                               shared_repository = 0;
+                               switch (safe_create_leading_directories_const(argv[0])) {
+                               case -3:
+                                       errno = EEXIST;
+                                       /* fallthru */
+                               case -1:
+                                       die_errno("cannot mkdir %s", argv[0]);
+                                       break;
+                               default:
+                                       break;
+                               }
+                               shared_repository = saved;
+                               if (mkdir(argv[0], 0777) < 0)
+                                       die_errno("cannot mkdir %s", argv[0]);
+                               mkdir_tried = 1;
+                               goto retry;
+                       }
+                       die_errno("cannot chdir to %s", argv[0]);
+               }
+       } else if (0 < argc) {
+               usage(init_db_usage[0]);
+       }
+       if (is_bare_repository_cfg == 1) {
+               static char git_dir[PATH_MAX+1];
+
+               setenv(GIT_DIR_ENVIRONMENT,
+                       getcwd(git_dir, sizeof(git_dir)), 0);
        }
 
        if (init_shared_repository != -1)