| #include "builtin.h" |
| #include "config.h" |
| #include "exec_cmd.h" |
| #include "help.h" |
| #include "run-command.h" |
| |
| const char git_usage_string[] = |
| "git [--version] [--help] [-C <path>] [-c name=value]\n" |
| " [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]\n" |
| " [-p | --paginate | --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."); |
| |
| static int use_pager = -1; |
| |
| static void list_builtins(void); |
| |
| 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_argv_exec_path(cmd + 1); |
| else { |
| puts(git_exec_path()); |
| exit(0); |
| } |
| } else if (!strcmp(cmd, "--html-path")) { |
| puts(system_path(GIT_HTML_PATH)); |
| exit(0); |
| } else if (!strcmp(cmd, "--man-path")) { |
| puts(system_path(GIT_MAN_PATH)); |
| exit(0); |
| } else if (!strcmp(cmd, "--info-path")) { |
| puts(system_path(GIT_INFO_PATH)); |
| exit(0); |
| } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { |
| use_pager = 1; |
| } else if (!strcmp(cmd, "--no-pager")) { |
| use_pager = 0; |
| if (envchanged) |
| *envchanged = 1; |
| } else if (!strcmp(cmd, "--no-replace-objects")) { |
| check_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((*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 (!strcmp(cmd, "--list-builtins")) { |
| list_builtins(); |
| exit(0); |
| } 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 (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; |
| argv_array_push(&child.args, alias_string + 1); |
| argv_array_pushv(&child.args, (*argv) + 1); |
| |
| 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); |
| memmove(new_argv - option_count, new_argv, |
| count * sizeof(char *)); |
| 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 */ |
| memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp); |
| |
| *argv = new_argv; |
| *argcp += count - 1; |
| |
| ret = 1; |
| } |
| |
| errno = saved_errno; |
| |
| return ret; |
| } |
| |
| #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) |
| |
| struct cmd_struct { |
| const char *cmd; |
| int (*fn)(int, const char **, const char *); |
| int option; |
| }; |
| |
| 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"); |
| |
| status = p->fn(argc, argv, prefix); |
| 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 }, |
| { "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 }, |
| { "bundle", cmd_bundle, RUN_SETUP_GENTLY }, |
| { "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 }, |
| { "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-tree", cmd_commit_tree, RUN_SETUP }, |
| { "config", cmd_config, RUN_SETUP_GENTLY }, |
| { "count-objects", cmd_count_objects, RUN_SETUP }, |
| { "credential", cmd_credential, RUN_SETUP_GENTLY }, |
| { "describe", cmd_describe, RUN_SETUP }, |
| { "diff", cmd_diff }, |
| { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE }, |
| { "diff-index", cmd_diff_index, RUN_SETUP }, |
| { "diff-tree", cmd_diff_tree, RUN_SETUP }, |
| { "difftool", cmd_difftool, RUN_SETUP | NEED_WORK_TREE }, |
| { "fast-export", cmd_fast_export, RUN_SETUP }, |
| { "fetch", cmd_fetch, RUN_SETUP }, |
| { "fetch-pack", cmd_fetch_pack, RUN_SETUP }, |
| { "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 }, |
| { "grep", cmd_grep, RUN_SETUP_GENTLY }, |
| { "hash-object", cmd_hash_object }, |
| { "help", cmd_help }, |
| { "index-pack", cmd_index_pack, RUN_SETUP_GENTLY }, |
| { "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 }, |
| { "mailsplit", cmd_mailsplit }, |
| { "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 }, |
| { "merge-ours", cmd_merge_ours, RUN_SETUP }, |
| { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
| { "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
| { "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
| { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
| { "merge-tree", cmd_merge_tree, RUN_SETUP }, |
| { "mktag", cmd_mktag, RUN_SETUP }, |
| { "mktree", cmd_mktree, RUN_SETUP }, |
| { "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 }, |
| { "pack-refs", cmd_pack_refs, RUN_SETUP }, |
| { "patch-id", cmd_patch_id, RUN_SETUP_GENTLY }, |
| { "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 }, |
| { "read-tree", cmd_read_tree, RUN_SETUP | SUPPORT_SUPER_PREFIX}, |
| { "rebase--helper", cmd_rebase__helper, 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 }, |
| { "remote-fd", cmd_remote_fd }, |
| { "repack", cmd_repack, RUN_SETUP }, |
| { "replace", cmd_replace, RUN_SETUP }, |
| { "rerere", cmd_rerere, RUN_SETUP }, |
| { "reset", cmd_reset, RUN_SETUP }, |
| { "rev-list", cmd_rev_list, RUN_SETUP }, |
| { "rev-parse", cmd_rev_parse }, |
| { "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-ref", cmd_show_ref, RUN_SETUP }, |
| { "stage", cmd_add, 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}, |
| { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP }, |
| { "tag", cmd_tag, RUN_SETUP | DELAY_PAGER_CONFIG }, |
| { "unpack-file", cmd_unpack_file, RUN_SETUP }, |
| { "unpack-objects", cmd_unpack_objects, RUN_SETUP }, |
| { "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 }, |
| { "upload-archive--writer", cmd_upload_archive_writer }, |
| { "var", cmd_var, RUN_SETUP_GENTLY }, |
| { "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 }, |
| { "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(void) |
| { |
| int i; |
| for (i = 0; i < ARRAY_SIZE(commands); i++) |
| printf("%s\n", commands[i].cmd); |
| } |
| |
| #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 argv_array args = ARGV_ARRAY_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++) { |
| argv_array_push(&args, argv[i]); |
| if (!i) |
| argv_array_push(&args, "--exclude-guides"); |
| } |
| |
| argc++; |
| argv = args.argv; |
| } |
| |
| builtin = get_builtin(cmd); |
| if (builtin) |
| exit(run_builtin(builtin, argc, argv)); |
| argv_array_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(); |
| |
| argv_array_pushf(&cmd.args, "git-%s", argv[0]); |
| argv_array_pushv(&cmd.args, argv + 1); |
| cmd.clean_on_exit = 1; |
| cmd.wait_after_clean = 1; |
| cmd.silent_exec_failure = 1; |
| |
| trace_argv_printf(cmd.args.argv, "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 (status >= 0) |
| exit(status); |
| else if (errno != ENOENT) |
| exit(128); |
| } |
| |
| static int run_argv(int *argcp, const char ***argv) |
| { |
| int done_alias = 0; |
| |
| 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); |
| |
| /* .. then try the external ones */ |
| execv_dashed_external(*argv); |
| |
| /* It could be an alias -- this works around the insanity |
| * of overriding "git log" with "git show" by having |
| * alias.log = show |
| */ |
| if (done_alias) |
| break; |
| if (!handle_alias(argcp, argv)) |
| break; |
| done_alias = 1; |
| } |
| |
| 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; |
| } |