diff options
Diffstat (limited to 'git.c')
| -rw-r--r-- | git.c | 670 |
1 files changed, 433 insertions, 237 deletions
@@ -1,37 +1,64 @@ #include "builtin.h" #include "exec_cmd.h" -#include "cache.h" -#include "quote.h" +#include "help.h" #include "run-command.h" const char git_usage_string[] = - "git [--version] [--exec-path[=GIT_EXEC_PATH]] [-p|--paginate|--no-pager] [--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE] [--help] COMMAND [ARGS]"; + "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[] = - "See 'git help COMMAND' for more information on a specific command."; + 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; -struct pager_config { - const char *cmd; - int val; +static char *orig_cwd; +static const char *env_names[] = { + GIT_DIR_ENVIRONMENT, + GIT_WORK_TREE_ENVIRONMENT, + GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, + GIT_PREFIX_ENVIRONMENT }; +static char *orig_env[4]; +static int save_restore_env_balance; -static int pager_command_config(const char *var, const char *value, void *data) +static void save_env_before_alias(void) { - struct pager_config *c = data; - if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd)) - c->val = git_config_bool(var, value); - return 0; + int i; + + assert(save_restore_env_balance == 0); + save_restore_env_balance = 1; + orig_cwd = xgetcwd(); + for (i = 0; i < ARRAY_SIZE(env_names); i++) { + orig_env[i] = getenv(env_names[i]); + orig_env[i] = xstrdup_or_null(orig_env[i]); + } } -/* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */ -int check_pager_config(const char *cmd) +static void restore_env(int external_alias) { - struct pager_config c; - c.cmd = cmd; - c.val = -1; - git_config(pager_command_config, &c); - return c.val; + int i; + + assert(save_restore_env_balance == 1); + save_restore_env_balance = 0; + if (!external_alias && orig_cwd && chdir(orig_cwd)) + die_errno("could not move to %s", orig_cwd); + free(orig_cwd); + for (i = 0; i < ARRAY_SIZE(env_names); i++) { + if (external_alias && + !strcmp(env_names[i], GIT_PREFIX_ENVIRONMENT)) + continue; + if (orig_env[i]) { + setenv(env_names[i], orig_env[i], 1); + free(orig_env[i]); + } else { + unsetenv(env_names[i]); + } + } } static void commit_pager_choice(void) { @@ -47,9 +74,9 @@ static void commit_pager_choice(void) { } } -static int handle_options(const char*** argv, int* argc, int* envchanged) +static int handle_options(const char ***argv, int *argc, int *envchanged) { - int handled = 0; + const char **orig_argv = *argv; while (*argc > 0) { const char *cmd = (*argv)[0]; @@ -67,20 +94,33 @@ static int handle_options(const char*** argv, int* argc, int* envchanged) /* * Check remaining flags. */ - if (!prefixcmp(cmd, "--exec-path")) { - cmd += 11; + 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" ); @@ -91,9 +131,22 @@ static int handle_options(const char*** argv, int* argc, int* envchanged) *envchanged = 1; (*argv)++; (*argc)--; - handled++; - } else if (!prefixcmp(cmd, "--git-dir=")) { - setenv(GIT_DIR_ENVIRONMENT, cmd + 10, 1); + } 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")) { @@ -106,16 +159,79 @@ static int handle_options(const char*** argv, int* argc, int* envchanged) *envchanged = 1; (*argv)++; (*argc)--; - } else if (!prefixcmp(cmd, "--work-tree=")) { - setenv(GIT_WORK_TREE_ENVIRONMENT, cmd + 12, 1); + } 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")) { - static char git_dir[PATH_MAX+1]; + char *cwd = xgetcwd(); is_bare_repository_cfg = 1; - setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0); + 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, "--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 { fprintf(stderr, "Unknown option: %s\n", cmd); usage(git_usage_string); @@ -123,48 +239,46 @@ static int handle_options(const char*** argv, int* argc, int* envchanged) (*argv)++; (*argc)--; - handled++; } - return handled; + return (*argv) - orig_argv; } static int handle_alias(int *argcp, const char ***argv) { int envchanged = 0, ret = 0, saved_errno = errno; - const char *subdir; int count, option_count; - const char** new_argv; + const char **new_argv; const char *alias_command; char *alias_string; int unused_nongit; - subdir = setup_git_directory_gently(&unused_nongit); + save_env_before_alias(); + setup_git_directory_gently(&unused_nongit); alias_command = (*argv)[0]; alias_string = alias_lookup(alias_command); if (alias_string) { if (alias_string[0] == '!') { - if (*argcp > 1) { - struct strbuf buf; - - strbuf_init(&buf, PATH_MAX); - strbuf_addstr(&buf, alias_string); - sq_quote_argv(&buf, (*argv) + 1, PATH_MAX); - free(alias_string); - alias_string = buf.buf; - } - trace_printf("trace: alias to shell cmd: %s => %s\n", - alias_command, alias_string + 1); - ret = system(alias_string + 1); - if (ret >= 0 && WIFEXITED(ret) && - WEXITSTATUS(ret) != 127) - exit(WEXITSTATUS(ret)); - die("Failed to run '%s' when expanding alias '%s'", - alias_string + 1, alias_command); + struct child_process child = CHILD_PROCESS_INIT; + + commit_pager_choice(); + restore_env(1); + + 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", alias_command); + 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" @@ -184,11 +298,9 @@ static int handle_alias(int *argcp, const char ***argv) "trace: alias expansion: %s =>", alias_command); - new_argv = xrealloc(new_argv, sizeof(char*) * - (count + *argcp + 1)); + REALLOC_ARRAY(new_argv, count + *argcp); /* insert after command name */ - memcpy(new_argv + count, *argv + 1, sizeof(char*) * *argcp); - new_argv[count+*argcp] = NULL; + memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp); *argv = new_argv; *argcp += count - 1; @@ -196,23 +308,22 @@ static int handle_alias(int *argcp, const char ***argv) ret = 1; } - if (subdir && chdir(subdir)) - die("Cannot change to %s: %s", subdir, strerror(errno)); + restore_env(0); errno = saved_errno; return ret; } -const char git_version_string[] = GIT_VERSION; - -#define RUN_SETUP (1<<0) -#define USE_PAGER (1<<1) +#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<<2) +#define NEED_WORK_TREE (1<<3) +#define SUPPORT_SUPER_PREFIX (1<<4) struct cmd_struct { const char *cmd; @@ -222,28 +333,44 @@ struct cmd_struct { static int run_builtin(struct cmd_struct *p, int argc, const char **argv) { - int status; + int status, help; struct stat st; const char *prefix; prefix = NULL; - if (p->option & RUN_SETUP) - prefix = setup_git_directory(); + 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)) + use_pager = check_pager_config(p->cmd); + if (use_pager == -1 && p->option & USE_PAGER) + use_pager = 1; - if (use_pager == -1 && p->option & RUN_SETUP) - 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 (p->option & NEED_WORK_TREE) + 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 & 0xff; + return status; /* Somebody closed stdout? */ if (fstat(fileno(stdout), &st)) @@ -254,175 +381,229 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv) /* Check for ENOSPC and EIO errors.. */ if (fflush(stdout)) - die("write failure on standard output: %s", strerror(errno)); + die_errno("write failure on standard output"); if (ferror(stdout)) die("unknown write failure on standard output"); if (fclose(stdout)) - die("close failed on standard output: %s", strerror(errno)); + die_errno("close failed on standard output"); return 0; } -static void handle_internal_command(int argc, const char **argv) +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 | SUPPORT_SUPER_PREFIX }, + { "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 | SUPPORT_SUPER_PREFIX }, + { "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 }, + { "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) { - const char *cmd = argv[0]; - static struct cmd_struct commands[] = { - { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE }, - { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE }, - { "annotate", cmd_annotate, RUN_SETUP }, - { "apply", cmd_apply }, - { "archive", cmd_archive }, - { "blame", cmd_blame, RUN_SETUP }, - { "branch", cmd_branch, RUN_SETUP }, - { "bundle", cmd_bundle }, - { "cat-file", cmd_cat_file, RUN_SETUP }, - { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE }, - { "checkout-index", cmd_checkout_index, - RUN_SETUP | NEED_WORK_TREE}, - { "check-ref-format", cmd_check_ref_format }, - { "check-attr", cmd_check_attr, RUN_SETUP }, - { "cherry", cmd_cherry, RUN_SETUP }, - { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE }, - { "clone", cmd_clone }, - { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE }, - { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE }, - { "commit-tree", cmd_commit_tree, RUN_SETUP }, - { "config", cmd_config }, - { "count-objects", cmd_count_objects, RUN_SETUP }, - { "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 }, - { "fast-export", cmd_fast_export, RUN_SETUP }, - { "fetch", cmd_fetch, RUN_SETUP }, - { "fetch-pack", cmd_fetch_pack, RUN_SETUP }, - { "fetch--tool", cmd_fetch__tool, 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 | USE_PAGER }, - { "help", cmd_help }, -#ifndef NO_CURL - { "http-fetch", cmd_http_fetch, RUN_SETUP }, -#endif - { "init", cmd_init_db }, - { "init-db", cmd_init_db }, - { "log", cmd_log, RUN_SETUP | USE_PAGER }, - { "ls-files", cmd_ls_files, RUN_SETUP }, - { "ls-tree", cmd_ls_tree, RUN_SETUP }, - { "ls-remote", cmd_ls_remote }, - { "mailinfo", cmd_mailinfo }, - { "mailsplit", cmd_mailsplit }, - { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE }, - { "merge-base", cmd_merge_base, RUN_SETUP }, - { "merge-file", cmd_merge_file }, - { "merge-ours", cmd_merge_ours, RUN_SETUP }, - { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, - { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, - { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE }, - { "name-rev", cmd_name_rev, RUN_SETUP }, - { "pack-objects", cmd_pack_objects, RUN_SETUP }, - { "peek-remote", cmd_ls_remote }, - { "pickaxe", cmd_blame, RUN_SETUP }, - { "prune", cmd_prune, RUN_SETUP }, - { "prune-packed", cmd_prune_packed, RUN_SETUP }, - { "push", cmd_push, RUN_SETUP }, - { "read-tree", cmd_read_tree, RUN_SETUP }, - { "receive-pack", cmd_receive_pack }, - { "reflog", cmd_reflog, RUN_SETUP }, - { "remote", cmd_remote, RUN_SETUP }, - { "repo-config", cmd_config }, - { "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, USE_PAGER }, - { "show-branch", cmd_show_branch, RUN_SETUP }, - { "show", cmd_show, RUN_SETUP | USE_PAGER }, - { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE }, - { "stripspace", cmd_stripspace }, - { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP }, - { "tag", cmd_tag, RUN_SETUP }, - { "tar-tree", cmd_tar_tree }, - { "unpack-objects", cmd_unpack_objects, RUN_SETUP }, - { "update-index", cmd_update_index, RUN_SETUP }, - { "update-ref", cmd_update_ref, RUN_SETUP }, - { "upload-archive", cmd_upload_archive }, - { "verify-tag", cmd_verify_tag, RUN_SETUP }, - { "version", cmd_version }, - { "whatchanged", cmd_whatchanged, RUN_SETUP | USE_PAGER }, - { "write-tree", cmd_write_tree, RUN_SETUP }, - { "verify-pack", cmd_verify_pack }, - { "show-ref", cmd_show_ref, RUN_SETUP }, - { "pack-refs", cmd_pack_refs, RUN_SETUP }, - }; int i; - static const char ext[] = STRIP_EXTENSION; - - if (sizeof(ext) > 1) { - i = strlen(argv[0]) - strlen(ext); - if (i > 0 && !strcmp(argv[0] + i, ext)) { - char *argv0 = xstrdup(argv[0]); - argv[0] = cmd = argv0; - argv0[i] = '\0'; - } + 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); +} + +#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 - /* Turn "git cmd --help" into "git help cmd" */ +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 < ARRAY_SIZE(commands); i++) { - struct cmd_struct *p = commands+i; - if (strcmp(p->cmd, cmd)) - continue; - exit(run_builtin(p, argc, argv)); + 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 strbuf cmd = STRBUF_INIT; - const char *tmp; + struct child_process cmd = CHILD_PROCESS_INIT; int status; - strbuf_addf(&cmd, "git-%s", argv[0]); + if (get_super_prefix()) + die("%s doesn't support --super-prefix", argv[0]); - /* - * argv[0] must be the git command, but the argv array - * belongs to the caller, and may be reused in - * subsequent loop iterations. Save argv[0] and - * restore it on error. - */ - tmp = argv[0]; - argv[0] = cmd.buf; + if (use_pager == -1) + 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(argv, "trace: exec:"); + 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. + * 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_v_opt(argv, 0); - if (status != -ERR_RUN_COMMAND_EXEC) { - if (IS_RUN_COMMAND_ERR(status)) - die("unable to run '%s'", argv[0]); - exit(-status); - } - errno = ENOENT; /* as if we called execvp */ - - argv[0] = tmp; - - strbuf_release(&cmd); + status = run_command(&cmd); + if (status >= 0) + exit(status); + else if (errno != ENOENT) + exit(128); } static int run_argv(int *argcp, const char ***argv) @@ -430,8 +611,17 @@ static int run_argv(int *argcp, const char ***argv) int done_alias = 0; while (1) { - /* See if it's an internal command */ - handle_internal_command(*argcp, *argv); + /* + * 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); @@ -440,7 +630,9 @@ static int run_argv(int *argcp, const char ***argv) * of overriding "git log" with "git show" by having * alias.log = show */ - if (done_alias || !handle_alias(argcp, argv)) + if (done_alias) + break; + if (!handle_alias(argcp, argv)) break; done_alias = 1; } @@ -448,14 +640,21 @@ static int run_argv(int *argcp, const char ***argv) return done_alias; } - -int main(int argc, const char **argv) +int cmd_main(int argc, const char **argv) { const char *cmd; + int done_help = 0; - cmd = git_extract_argv0_path(argv[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: @@ -464,50 +663,47 @@ int main(int argc, const char **argv) * - cannot execute it externally (since it would just do * the same thing over again) * - * So we just directly call the internal command handler, and - * die if that one cannot handle it. + * So we just directly call the builtin handler, and die if + * that one cannot handle it. */ - if (!prefixcmp(cmd, "git-")) { - cmd += 4; + if (skip_prefix(cmd, "git-", &cmd)) { argv[0] = cmd; - handle_internal_command(argc, argv); - die("cannot handle %s internally", cmd); + handle_builtin(argc, argv); + die("cannot handle %s as a builtin", cmd); } /* Look for flags.. */ argv++; argc--; handle_options(&argv, &argc, NULL); - commit_pager_choice(); if (argc > 0) { - if (!prefixcmp(argv[0], "--")) - argv[0] += 2; + /* 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); + 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 - * precidence paths: the "--exec-path" option, the GIT_EXEC_PATH + * precedence paths: the "--exec-path" option, the GIT_EXEC_PATH * environment, and the $(gitexecdir) from the Makefile at build * time. */ setup_path(); while (1) { - static int done_help = 0; - static int was_alias = 0; - was_alias = run_argv(&argc, &argv); + 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", + "'%s' is not a git command\n", cmd, argv[0]); exit(1); } |