diff options
Diffstat (limited to 'third_party/git/git.c')
| -rw-r--r-- | third_party/git/git.c | 918 |
1 files changed, 0 insertions, 918 deletions
diff --git a/third_party/git/git.c b/third_party/git/git.c deleted file mode 100644 index 4bdcdad2ccd3..000000000000 --- a/third_party/git/git.c +++ /dev/null @@ -1,918 +0,0 @@ -#include "builtin.h" -#include "config.h" -#include "exec-cmd.h" -#include "help.h" -#include "run-command.h" -#include "alias.h" -#include "shallow.h" - -#define RUN_SETUP (1<<0) -#define RUN_SETUP_GENTLY (1<<1) -#define USE_PAGER (1<<2) -/* - * require working tree to be present -- anything uses this needs - * RUN_SETUP for reading from the configuration file. - */ -#define NEED_WORK_TREE (1<<3) -#define SUPPORT_SUPER_PREFIX (1<<4) -#define DELAY_PAGER_CONFIG (1<<5) -#define NO_PARSEOPT (1<<6) /* parse-options is not used */ - -struct cmd_struct { - const char *cmd; - int (*fn)(int, const char **, const char *); - unsigned int option; -}; - -const char git_usage_string[] = - N_("git [--version] [--help] [-C <path>] [-c <name>=<value>]\n" - " [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]\n" - " [-p | --paginate | -P | --no-pager] [--no-replace-objects] [--bare]\n" - " [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]\n" - " <command> [<args>]"); - -const char git_more_info_string[] = - N_("'git help -a' and 'git help -g' list available subcommands and some\n" - "concept guides. See 'git help <command>' or 'git help <concept>'\n" - "to read about a specific subcommand or concept.\n" - "See 'git help git' for an overview of the system."); - -static int use_pager = -1; - -static void list_builtins(struct string_list *list, unsigned int exclude_option); - -static void exclude_helpers_from_list(struct string_list *list) -{ - int i = 0; - - while (i < list->nr) { - if (strstr(list->items[i].string, "--")) - unsorted_string_list_delete_item(list, i, 0); - else - i++; - } -} - -static int match_token(const char *spec, int len, const char *token) -{ - int token_len = strlen(token); - - return len == token_len && !strncmp(spec, token, token_len); -} - -static int list_cmds(const char *spec) -{ - struct string_list list = STRING_LIST_INIT_DUP; - int i; - int nongit; - - /* - * Set up the repository so we can pick up any repo-level config (like - * completion.commands). - */ - setup_git_directory_gently(&nongit); - - while (*spec) { - const char *sep = strchrnul(spec, ','); - int len = sep - spec; - - if (match_token(spec, len, "builtins")) - list_builtins(&list, 0); - else if (match_token(spec, len, "main")) - list_all_main_cmds(&list); - else if (match_token(spec, len, "others")) - list_all_other_cmds(&list); - else if (match_token(spec, len, "nohelpers")) - exclude_helpers_from_list(&list); - else if (match_token(spec, len, "alias")) - list_aliases(&list); - else if (match_token(spec, len, "config")) - list_cmds_by_config(&list); - else if (len > 5 && !strncmp(spec, "list-", 5)) { - struct strbuf sb = STRBUF_INIT; - - strbuf_add(&sb, spec + 5, len - 5); - list_cmds_by_category(&list, sb.buf); - strbuf_release(&sb); - } - else - die(_("unsupported command listing type '%s'"), spec); - spec += len; - if (*spec == ',') - spec++; - } - for (i = 0; i < list.nr; i++) - puts(list.items[i].string); - string_list_clear(&list, 0); - return 0; -} - -static void commit_pager_choice(void) -{ - switch (use_pager) { - case 0: - setenv("GIT_PAGER", "cat", 1); - break; - case 1: - setup_pager(); - break; - default: - break; - } -} - -void setup_auto_pager(const char *cmd, int def) -{ - if (use_pager != -1 || pager_in_use()) - return; - use_pager = check_pager_config(cmd); - if (use_pager == -1) - use_pager = def; - commit_pager_choice(); -} - -static int handle_options(const char ***argv, int *argc, int *envchanged) -{ - const char **orig_argv = *argv; - - while (*argc > 0) { - const char *cmd = (*argv)[0]; - if (cmd[0] != '-') - break; - - /* - * For legacy reasons, the "version" and "help" - * commands can be written with "--" prepended - * to make them look like flags. - */ - if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version")) - break; - - /* - * Check remaining flags. - */ - if (skip_prefix(cmd, "--exec-path", &cmd)) { - if (*cmd == '=') - git_set_exec_path(cmd + 1); - else { - puts(git_exec_path()); - trace2_cmd_name("_query_"); - exit(0); - } - } else if (!strcmp(cmd, "--html-path")) { - puts(system_path(GIT_HTML_PATH)); - trace2_cmd_name("_query_"); - exit(0); - } else if (!strcmp(cmd, "--man-path")) { - puts(system_path(GIT_MAN_PATH)); - trace2_cmd_name("_query_"); - exit(0); - } else if (!strcmp(cmd, "--info-path")) { - puts(system_path(GIT_INFO_PATH)); - trace2_cmd_name("_query_"); - exit(0); - } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { - use_pager = 1; - } else if (!strcmp(cmd, "-P") || !strcmp(cmd, "--no-pager")) { - use_pager = 0; - if (envchanged) - *envchanged = 1; - } else if (!strcmp(cmd, "--no-replace-objects")) { - read_replace_refs = 0; - setenv(NO_REPLACE_OBJECTS_ENVIRONMENT, "1", 1); - if (envchanged) - *envchanged = 1; - } else if (!strcmp(cmd, "--git-dir")) { - if (*argc < 2) { - fprintf(stderr, _("no directory given for --git-dir\n" )); - usage(git_usage_string); - } - setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1); - if (envchanged) - *envchanged = 1; - (*argv)++; - (*argc)--; - } else if (skip_prefix(cmd, "--git-dir=", &cmd)) { - setenv(GIT_DIR_ENVIRONMENT, cmd, 1); - if (envchanged) - *envchanged = 1; - } else if (!strcmp(cmd, "--namespace")) { - if (*argc < 2) { - fprintf(stderr, _("no namespace given for --namespace\n" )); - usage(git_usage_string); - } - setenv(GIT_NAMESPACE_ENVIRONMENT, (*argv)[1], 1); - if (envchanged) - *envchanged = 1; - (*argv)++; - (*argc)--; - } else if (skip_prefix(cmd, "--namespace=", &cmd)) { - setenv(GIT_NAMESPACE_ENVIRONMENT, cmd, 1); - if (envchanged) - *envchanged = 1; - } else if (!strcmp(cmd, "--work-tree")) { - if (*argc < 2) { - fprintf(stderr, _("no directory given for --work-tree\n" )); - usage(git_usage_string); - } - setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1); - if (envchanged) - *envchanged = 1; - (*argv)++; - (*argc)--; - } else if (skip_prefix(cmd, "--work-tree=", &cmd)) { - setenv(GIT_WORK_TREE_ENVIRONMENT, cmd, 1); - if (envchanged) - *envchanged = 1; - } else if (!strcmp(cmd, "--super-prefix")) { - if (*argc < 2) { - fprintf(stderr, _("no prefix given for --super-prefix\n" )); - usage(git_usage_string); - } - setenv(GIT_SUPER_PREFIX_ENVIRONMENT, (*argv)[1], 1); - if (envchanged) - *envchanged = 1; - (*argv)++; - (*argc)--; - } else if (skip_prefix(cmd, "--super-prefix=", &cmd)) { - setenv(GIT_SUPER_PREFIX_ENVIRONMENT, cmd, 1); - if (envchanged) - *envchanged = 1; - } else if (!strcmp(cmd, "--bare")) { - char *cwd = xgetcwd(); - is_bare_repository_cfg = 1; - setenv(GIT_DIR_ENVIRONMENT, cwd, 0); - free(cwd); - setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, "0", 1); - if (envchanged) - *envchanged = 1; - } else if (!strcmp(cmd, "-c")) { - if (*argc < 2) { - fprintf(stderr, _("-c expects a configuration string\n" )); - usage(git_usage_string); - } - git_config_push_parameter((*argv)[1]); - (*argv)++; - (*argc)--; - } else if (!strcmp(cmd, "--literal-pathspecs")) { - setenv(GIT_LITERAL_PATHSPECS_ENVIRONMENT, "1", 1); - if (envchanged) - *envchanged = 1; - } else if (!strcmp(cmd, "--no-literal-pathspecs")) { - setenv(GIT_LITERAL_PATHSPECS_ENVIRONMENT, "0", 1); - if (envchanged) - *envchanged = 1; - } else if (!strcmp(cmd, "--glob-pathspecs")) { - setenv(GIT_GLOB_PATHSPECS_ENVIRONMENT, "1", 1); - if (envchanged) - *envchanged = 1; - } else if (!strcmp(cmd, "--noglob-pathspecs")) { - setenv(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, "1", 1); - if (envchanged) - *envchanged = 1; - } else if (!strcmp(cmd, "--icase-pathspecs")) { - setenv(GIT_ICASE_PATHSPECS_ENVIRONMENT, "1", 1); - if (envchanged) - *envchanged = 1; - } else if (!strcmp(cmd, "--no-optional-locks")) { - setenv(GIT_OPTIONAL_LOCKS_ENVIRONMENT, "0", 1); - if (envchanged) - *envchanged = 1; - } else if (!strcmp(cmd, "--shallow-file")) { - (*argv)++; - (*argc)--; - set_alternate_shallow_file(the_repository, (*argv)[0], 1); - if (envchanged) - *envchanged = 1; - } else if (!strcmp(cmd, "-C")) { - if (*argc < 2) { - fprintf(stderr, _("no directory given for -C\n" )); - usage(git_usage_string); - } - if ((*argv)[1][0]) { - if (chdir((*argv)[1])) - die_errno("cannot change to '%s'", (*argv)[1]); - if (envchanged) - *envchanged = 1; - } - (*argv)++; - (*argc)--; - } else if (skip_prefix(cmd, "--list-cmds=", &cmd)) { - trace2_cmd_name("_query_"); - if (!strcmp(cmd, "parseopt")) { - struct string_list list = STRING_LIST_INIT_DUP; - int i; - - list_builtins(&list, NO_PARSEOPT); - for (i = 0; i < list.nr; i++) - printf("%s ", list.items[i].string); - string_list_clear(&list, 0); - exit(0); - } else { - exit(list_cmds(cmd)); - } - } else { - fprintf(stderr, _("unknown option: %s\n"), cmd); - usage(git_usage_string); - } - - (*argv)++; - (*argc)--; - } - return (*argv) - orig_argv; -} - -static int handle_alias(int *argcp, const char ***argv) -{ - int envchanged = 0, ret = 0, saved_errno = errno; - int count, option_count; - const char **new_argv; - const char *alias_command; - char *alias_string; - - alias_command = (*argv)[0]; - alias_string = alias_lookup(alias_command); - if (alias_string) { - if (*argcp > 1 && !strcmp((*argv)[1], "-h")) - fprintf_ln(stderr, _("'%s' is aliased to '%s'"), - alias_command, alias_string); - if (alias_string[0] == '!') { - struct child_process child = CHILD_PROCESS_INIT; - int nongit_ok; - - /* Aliases expect GIT_PREFIX, GIT_DIR etc to be set */ - setup_git_directory_gently(&nongit_ok); - - commit_pager_choice(); - - child.use_shell = 1; - child.clean_on_exit = 1; - child.wait_after_clean = 1; - child.trace2_child_class = "shell_alias"; - strvec_push(&child.args, alias_string + 1); - strvec_pushv(&child.args, (*argv) + 1); - - trace2_cmd_alias(alias_command, child.args.v); - trace2_cmd_list_config(); - trace2_cmd_list_env_vars(); - trace2_cmd_name("_run_shell_alias_"); - - ret = run_command(&child); - if (ret >= 0) /* normal exit */ - exit(ret); - - die_errno(_("while expanding alias '%s': '%s'"), - alias_command, alias_string + 1); - } - count = split_cmdline(alias_string, &new_argv); - if (count < 0) - die(_("bad alias.%s string: %s"), alias_command, - _(split_cmdline_strerror(count))); - option_count = handle_options(&new_argv, &count, &envchanged); - if (envchanged) - die(_("alias '%s' changes environment variables.\n" - "You can use '!git' in the alias to do this"), - alias_command); - MOVE_ARRAY(new_argv - option_count, new_argv, count); - new_argv -= option_count; - - if (count < 1) - die(_("empty alias for %s"), alias_command); - - if (!strcmp(alias_command, new_argv[0])) - die(_("recursive alias: %s"), alias_command); - - trace_argv_printf(new_argv, - "trace: alias expansion: %s =>", - alias_command); - - REALLOC_ARRAY(new_argv, count + *argcp); - /* insert after command name */ - COPY_ARRAY(new_argv + count, *argv + 1, *argcp); - - trace2_cmd_alias(alias_command, new_argv); - trace2_cmd_list_config(); - trace2_cmd_list_env_vars(); - - *argv = new_argv; - *argcp += count - 1; - - ret = 1; - } - - errno = saved_errno; - - return ret; -} - -static int run_builtin(struct cmd_struct *p, int argc, const char **argv) -{ - int status, help; - struct stat st; - const char *prefix; - - prefix = NULL; - help = argc == 2 && !strcmp(argv[1], "-h"); - if (!help) { - if (p->option & RUN_SETUP) - prefix = setup_git_directory(); - else if (p->option & RUN_SETUP_GENTLY) { - int nongit_ok; - prefix = setup_git_directory_gently(&nongit_ok); - } - - if (use_pager == -1 && p->option & (RUN_SETUP | RUN_SETUP_GENTLY) && - !(p->option & DELAY_PAGER_CONFIG)) - use_pager = check_pager_config(p->cmd); - if (use_pager == -1 && p->option & USE_PAGER) - use_pager = 1; - - if ((p->option & (RUN_SETUP | RUN_SETUP_GENTLY)) && - startup_info->have_repository) /* get_git_dir() may set up repo, avoid that */ - trace_repo_setup(prefix); - } - commit_pager_choice(); - - if (!help && get_super_prefix()) { - if (!(p->option & SUPPORT_SUPER_PREFIX)) - die(_("%s doesn't support --super-prefix"), p->cmd); - } - - if (!help && p->option & NEED_WORK_TREE) - setup_work_tree(); - - trace_argv_printf(argv, "trace: built-in: git"); - trace2_cmd_name(p->cmd); - trace2_cmd_list_config(); - trace2_cmd_list_env_vars(); - - validate_cache_entries(the_repository->index); - status = p->fn(argc, argv, prefix); - validate_cache_entries(the_repository->index); - - if (status) - return status; - - /* Somebody closed stdout? */ - if (fstat(fileno(stdout), &st)) - return 0; - /* Ignore write errors for pipes and sockets.. */ - if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) - return 0; - - /* Check for ENOSPC and EIO errors.. */ - if (fflush(stdout)) - die_errno(_("write failure on standard output")); - if (ferror(stdout)) - die(_("unknown write failure on standard output")); - if (fclose(stdout)) - die_errno(_("close failed on standard output")); - return 0; -} - -static struct cmd_struct commands[] = { - { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE }, - { "am", cmd_am, RUN_SETUP | NEED_WORK_TREE }, - { "annotate", cmd_annotate, RUN_SETUP | NO_PARSEOPT }, - { "apply", cmd_apply, RUN_SETUP_GENTLY }, - { "archive", cmd_archive, RUN_SETUP_GENTLY }, - { "bisect--helper", cmd_bisect__helper, RUN_SETUP }, - { "blame", cmd_blame, RUN_SETUP }, - { "branch", cmd_branch, RUN_SETUP | DELAY_PAGER_CONFIG }, - { "bugreport", cmd_bugreport, RUN_SETUP_GENTLY }, - { "bundle", cmd_bundle, RUN_SETUP_GENTLY | NO_PARSEOPT }, - { "cat-file", cmd_cat_file, RUN_SETUP }, - { "check-attr", cmd_check_attr, RUN_SETUP }, - { "check-ignore", cmd_check_ignore, RUN_SETUP | NEED_WORK_TREE }, - { "check-mailmap", cmd_check_mailmap, RUN_SETUP }, - { "check-ref-format", cmd_check_ref_format, NO_PARSEOPT }, - { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE }, - { "checkout-index", cmd_checkout_index, - RUN_SETUP | NEED_WORK_TREE}, - { "cherry", cmd_cherry, RUN_SETUP }, - { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE }, - { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE }, - { "clone", cmd_clone }, - { "column", cmd_column, RUN_SETUP_GENTLY }, - { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE }, - { "commit-graph", cmd_commit_graph, RUN_SETUP }, - { "commit-tree", cmd_commit_tree, RUN_SETUP | NO_PARSEOPT }, - { "config", cmd_config, RUN_SETUP_GENTLY | DELAY_PAGER_CONFIG }, - { "count-objects", cmd_count_objects, RUN_SETUP }, - { "credential", cmd_credential, RUN_SETUP_GENTLY | NO_PARSEOPT }, - { "credential-cache", cmd_credential_cache }, - { "credential-cache--daemon", cmd_credential_cache_daemon }, - { "credential-store", cmd_credential_store }, - { "describe", cmd_describe, RUN_SETUP }, - { "diff", cmd_diff, NO_PARSEOPT }, - { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT }, - { "diff-index", cmd_diff_index, RUN_SETUP | NO_PARSEOPT }, - { "diff-tree", cmd_diff_tree, RUN_SETUP | NO_PARSEOPT }, - { "difftool", cmd_difftool, RUN_SETUP_GENTLY }, - { "env--helper", cmd_env__helper }, - { "fast-export", cmd_fast_export, RUN_SETUP }, - { "fast-import", cmd_fast_import, RUN_SETUP | NO_PARSEOPT }, - { "fetch", cmd_fetch, RUN_SETUP }, - { "fetch-pack", cmd_fetch_pack, RUN_SETUP | NO_PARSEOPT }, - { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP }, - { "for-each-ref", cmd_for_each_ref, RUN_SETUP }, - { "format-patch", cmd_format_patch, RUN_SETUP }, - { "fsck", cmd_fsck, RUN_SETUP }, - { "fsck-objects", cmd_fsck, RUN_SETUP }, - { "gc", cmd_gc, RUN_SETUP }, - { "get-tar-commit-id", cmd_get_tar_commit_id, NO_PARSEOPT }, - { "grep", cmd_grep, RUN_SETUP_GENTLY }, - { "hash-object", cmd_hash_object }, - { "help", cmd_help }, - { "index-pack", cmd_index_pack, RUN_SETUP_GENTLY | NO_PARSEOPT }, - { "init", cmd_init_db }, - { "init-db", cmd_init_db }, - { "interpret-trailers", cmd_interpret_trailers, RUN_SETUP_GENTLY }, - { "log", cmd_log, RUN_SETUP }, - { "ls-files", cmd_ls_files, RUN_SETUP }, - { "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY }, - { "ls-tree", cmd_ls_tree, RUN_SETUP }, - { "mailinfo", cmd_mailinfo, RUN_SETUP_GENTLY | NO_PARSEOPT }, - { "mailsplit", cmd_mailsplit, NO_PARSEOPT }, - { "maintenance", cmd_maintenance, RUN_SETUP_GENTLY | NO_PARSEOPT }, - { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE }, - { "merge-base", cmd_merge_base, RUN_SETUP }, - { "merge-file", cmd_merge_file, RUN_SETUP_GENTLY }, - { "merge-index", cmd_merge_index, RUN_SETUP | NO_PARSEOPT }, - { "merge-ours", cmd_merge_ours, RUN_SETUP | NO_PARSEOPT }, - { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT }, - { "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT }, - { "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT }, - { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT }, - { "merge-tree", cmd_merge_tree, RUN_SETUP | NO_PARSEOPT }, - { "mktag", cmd_mktag, RUN_SETUP | NO_PARSEOPT }, - { "mktree", cmd_mktree, RUN_SETUP }, - { "multi-pack-index", cmd_multi_pack_index, RUN_SETUP_GENTLY }, - { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE }, - { "name-rev", cmd_name_rev, RUN_SETUP }, - { "notes", cmd_notes, RUN_SETUP }, - { "pack-objects", cmd_pack_objects, RUN_SETUP }, - { "pack-redundant", cmd_pack_redundant, RUN_SETUP | NO_PARSEOPT }, - { "pack-refs", cmd_pack_refs, RUN_SETUP }, - { "patch-id", cmd_patch_id, RUN_SETUP_GENTLY | NO_PARSEOPT }, - { "pickaxe", cmd_blame, RUN_SETUP }, - { "prune", cmd_prune, RUN_SETUP }, - { "prune-packed", cmd_prune_packed, RUN_SETUP }, - { "pull", cmd_pull, RUN_SETUP | NEED_WORK_TREE }, - { "push", cmd_push, RUN_SETUP }, - { "range-diff", cmd_range_diff, RUN_SETUP | USE_PAGER }, - { "read-tree", cmd_read_tree, RUN_SETUP | SUPPORT_SUPER_PREFIX}, - { "rebase", cmd_rebase, RUN_SETUP | NEED_WORK_TREE }, - { "rebase--interactive", cmd_rebase__interactive, RUN_SETUP | NEED_WORK_TREE }, - { "receive-pack", cmd_receive_pack }, - { "reflog", cmd_reflog, RUN_SETUP }, - { "remote", cmd_remote, RUN_SETUP }, - { "remote-ext", cmd_remote_ext, NO_PARSEOPT }, - { "remote-fd", cmd_remote_fd, NO_PARSEOPT }, - { "repack", cmd_repack, RUN_SETUP }, - { "replace", cmd_replace, RUN_SETUP }, - { "rerere", cmd_rerere, RUN_SETUP }, - { "reset", cmd_reset, RUN_SETUP }, - { "restore", cmd_restore, RUN_SETUP | NEED_WORK_TREE }, - { "rev-list", cmd_rev_list, RUN_SETUP | NO_PARSEOPT }, - { "rev-parse", cmd_rev_parse, NO_PARSEOPT }, - { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE }, - { "rm", cmd_rm, RUN_SETUP }, - { "send-pack", cmd_send_pack, RUN_SETUP }, - { "shortlog", cmd_shortlog, RUN_SETUP_GENTLY | USE_PAGER }, - { "show", cmd_show, RUN_SETUP }, - { "show-branch", cmd_show_branch, RUN_SETUP }, - { "show-index", cmd_show_index, RUN_SETUP_GENTLY }, - { "show-ref", cmd_show_ref, RUN_SETUP }, - { "sparse-checkout", cmd_sparse_checkout, RUN_SETUP | NEED_WORK_TREE }, - { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE }, - { "stash", cmd_stash, RUN_SETUP | NEED_WORK_TREE }, - { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE }, - { "stripspace", cmd_stripspace }, - { "submodule--helper", cmd_submodule__helper, RUN_SETUP | SUPPORT_SUPER_PREFIX | NO_PARSEOPT }, - { "switch", cmd_switch, RUN_SETUP | NEED_WORK_TREE }, - { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP }, - { "tag", cmd_tag, RUN_SETUP | DELAY_PAGER_CONFIG }, - { "unpack-file", cmd_unpack_file, RUN_SETUP | NO_PARSEOPT }, - { "unpack-objects", cmd_unpack_objects, RUN_SETUP | NO_PARSEOPT }, - { "update-index", cmd_update_index, RUN_SETUP }, - { "update-ref", cmd_update_ref, RUN_SETUP }, - { "update-server-info", cmd_update_server_info, RUN_SETUP }, - { "upload-archive", cmd_upload_archive, NO_PARSEOPT }, - { "upload-archive--writer", cmd_upload_archive_writer, NO_PARSEOPT }, - { "upload-pack", cmd_upload_pack }, - { "var", cmd_var, RUN_SETUP_GENTLY | NO_PARSEOPT }, - { "verify-commit", cmd_verify_commit, RUN_SETUP }, - { "verify-pack", cmd_verify_pack }, - { "verify-tag", cmd_verify_tag, RUN_SETUP }, - { "version", cmd_version }, - { "whatchanged", cmd_whatchanged, RUN_SETUP }, - { "worktree", cmd_worktree, RUN_SETUP | NO_PARSEOPT }, - { "write-tree", cmd_write_tree, RUN_SETUP }, -}; - -static struct cmd_struct *get_builtin(const char *s) -{ - int i; - for (i = 0; i < ARRAY_SIZE(commands); i++) { - struct cmd_struct *p = commands + i; - if (!strcmp(s, p->cmd)) - return p; - } - return NULL; -} - -int is_builtin(const char *s) -{ - return !!get_builtin(s); -} - -static void list_builtins(struct string_list *out, unsigned int exclude_option) -{ - int i; - for (i = 0; i < ARRAY_SIZE(commands); i++) { - if (exclude_option && - (commands[i].option & exclude_option)) - continue; - string_list_append(out, commands[i].cmd); - } -} - -void load_builtin_commands(const char *prefix, struct cmdnames *cmds) -{ - const char *name; - int i; - - /* - * Callers can ask for a subset of the commands based on a certain - * prefix, which is then dropped from the added names. The names in - * the `commands[]` array do not have the `git-` prefix, though, - * therefore we must expect the `prefix` to at least start with `git-`. - */ - if (!skip_prefix(prefix, "git-", &prefix)) - BUG("prefix '%s' must start with 'git-'", prefix); - - for (i = 0; i < ARRAY_SIZE(commands); i++) - if (skip_prefix(commands[i].cmd, prefix, &name)) - add_cmdname(cmds, name, strlen(name)); -} - -#ifdef STRIP_EXTENSION -static void strip_extension(const char **argv) -{ - size_t len; - - if (strip_suffix(argv[0], STRIP_EXTENSION, &len)) - argv[0] = xmemdupz(argv[0], len); -} -#else -#define strip_extension(cmd) -#endif - -static void handle_builtin(int argc, const char **argv) -{ - struct strvec args = STRVEC_INIT; - const char *cmd; - struct cmd_struct *builtin; - - strip_extension(argv); - cmd = argv[0]; - - /* Turn "git cmd --help" into "git help --exclude-guides cmd" */ - if (argc > 1 && !strcmp(argv[1], "--help")) { - int i; - - argv[1] = argv[0]; - argv[0] = cmd = "help"; - - for (i = 0; i < argc; i++) { - strvec_push(&args, argv[i]); - if (!i) - strvec_push(&args, "--exclude-guides"); - } - - argc++; - argv = args.v; - } - - builtin = get_builtin(cmd); - if (builtin) - exit(run_builtin(builtin, argc, argv)); - strvec_clear(&args); -} - -static void execv_dashed_external(const char **argv) -{ - struct child_process cmd = CHILD_PROCESS_INIT; - int status; - - if (get_super_prefix()) - die(_("%s doesn't support --super-prefix"), argv[0]); - - if (use_pager == -1 && !is_builtin(argv[0])) - use_pager = check_pager_config(argv[0]); - commit_pager_choice(); - - strvec_pushf(&cmd.args, "git-%s", argv[0]); - strvec_pushv(&cmd.args, argv + 1); - cmd.clean_on_exit = 1; - cmd.wait_after_clean = 1; - cmd.silent_exec_failure = 1; - cmd.trace2_child_class = "dashed"; - - trace2_cmd_name("_run_dashed_"); - - /* - * The code in run_command() logs trace2 child_start/child_exit - * events, so we do not need to report exec/exec_result events here. - */ - trace_argv_printf(cmd.args.v, "trace: exec:"); - - /* - * If we fail because the command is not found, it is - * OK to return. Otherwise, we just pass along the status code, - * or our usual generic code if we were not even able to exec - * the program. - */ - status = run_command(&cmd); - - /* - * If the child process ran and we are now going to exit, emit a - * generic string as our trace2 command verb to indicate that we - * launched a dashed command. - */ - if (status >= 0) - exit(status); - else if (errno != ENOENT) - exit(128); -} - -static int run_argv(int *argcp, const char ***argv) -{ - int done_alias = 0; - struct string_list cmd_list = STRING_LIST_INIT_NODUP; - struct string_list_item *seen; - - while (1) { - /* - * If we tried alias and futzed with our environment, - * it no longer is safe to invoke builtins directly in - * general. We have to spawn them as dashed externals. - * - * NEEDSWORK: if we can figure out cases - * where it is safe to do, we can avoid spawning a new - * process. - */ - if (!done_alias) - handle_builtin(*argcp, *argv); - else if (get_builtin(**argv)) { - struct strvec args = STRVEC_INIT; - int i; - - /* - * The current process is committed to launching a - * child process to run the command named in (**argv) - * and exiting. Log a generic string as the trace2 - * command verb to indicate this. Note that the child - * process will log the actual verb when it runs. - */ - trace2_cmd_name("_run_git_alias_"); - - if (get_super_prefix()) - die("%s doesn't support --super-prefix", **argv); - - commit_pager_choice(); - - strvec_push(&args, "git"); - for (i = 0; i < *argcp; i++) - strvec_push(&args, (*argv)[i]); - - trace_argv_printf(args.v, "trace: exec:"); - - /* - * if we fail because the command is not found, it is - * OK to return. Otherwise, we just pass along the status code. - */ - i = run_command_v_opt_tr2(args.v, RUN_SILENT_EXEC_FAILURE | - RUN_CLEAN_ON_EXIT | RUN_WAIT_AFTER_CLEAN, "git_alias"); - if (i >= 0 || errno != ENOENT) - exit(i); - die("could not execute builtin %s", **argv); - } - - /* .. then try the external ones */ - execv_dashed_external(*argv); - - seen = unsorted_string_list_lookup(&cmd_list, *argv[0]); - if (seen) { - int i; - struct strbuf sb = STRBUF_INIT; - for (i = 0; i < cmd_list.nr; i++) { - struct string_list_item *item = &cmd_list.items[i]; - - strbuf_addf(&sb, "\n %s", item->string); - if (item == seen) - strbuf_addstr(&sb, " <=="); - else if (i == cmd_list.nr - 1) - strbuf_addstr(&sb, " ==>"); - } - die(_("alias loop detected: expansion of '%s' does" - " not terminate:%s"), cmd_list.items[0].string, sb.buf); - } - - string_list_append(&cmd_list, *argv[0]); - - /* - * It could be an alias -- this works around the insanity - * of overriding "git log" with "git show" by having - * alias.log = show - */ - if (!handle_alias(argcp, argv)) - break; - done_alias = 1; - } - - string_list_clear(&cmd_list, 0); - - return done_alias; -} - -int cmd_main(int argc, const char **argv) -{ - const char *cmd; - int done_help = 0; - - cmd = argv[0]; - if (!cmd) - cmd = "git-help"; - else { - const char *slash = find_last_dir_sep(cmd); - if (slash) - cmd = slash + 1; - } - - trace_command_performance(argv); - - /* - * "git-xxxx" is the same as "git xxxx", but we obviously: - * - * - cannot take flags in between the "git" and the "xxxx". - * - cannot execute it externally (since it would just do - * the same thing over again) - * - * So we just directly call the builtin handler, and die if - * that one cannot handle it. - */ - if (skip_prefix(cmd, "git-", &cmd)) { - argv[0] = cmd; - handle_builtin(argc, argv); - die(_("cannot handle %s as a builtin"), cmd); - } - - /* Look for flags.. */ - argv++; - argc--; - handle_options(&argv, &argc, NULL); - if (argc > 0) { - /* translate --help and --version into commands */ - skip_prefix(argv[0], "--", &argv[0]); - } else { - /* The user didn't specify a command; give them help */ - commit_pager_choice(); - printf(_("usage: %s\n\n"), git_usage_string); - list_common_cmds_help(); - printf("\n%s\n", _(git_more_info_string)); - exit(1); - } - cmd = argv[0]; - - /* - * We use PATH to find git commands, but we prepend some higher - * precedence paths: the "--exec-path" option, the GIT_EXEC_PATH - * environment, and the $(gitexecdir) from the Makefile at build - * time. - */ - setup_path(); - - while (1) { - int was_alias = run_argv(&argc, &argv); - if (errno != ENOENT) - break; - if (was_alias) { - fprintf(stderr, _("expansion of alias '%s' failed; " - "'%s' is not a git command\n"), - cmd, argv[0]); - exit(1); - } - if (!done_help) { - cmd = argv[0] = help_unknown_cmd(cmd); - done_help = 1; - } else - break; - } - - fprintf(stderr, _("failed to run command '%s': %s\n"), - cmd, strerror(errno)); - - return 1; -} |