diff options
Diffstat (limited to 'git.c')
| -rw-r--r-- | git.c | 326 |
1 files changed, 207 insertions, 119 deletions
@@ -1,25 +1,40 @@ #include "builtin.h" -#include "exec_cmd.h" #include "cache.h" +#include "exec_cmd.h" +#include "help.h" #include "quote.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] [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]\n" + " [-p|--paginate|--no-pager] [--no-replace-objects]\n" + " [--bare] [--git-dir=<path>] [--work-tree=<path>]\n" + " [-c name=value] [--help]\n" + " <command> [<args>]"; const char git_more_info_string[] = - "See 'git help COMMAND' for more information on a specific command."; + "See 'git help <command>' for more information on a specific command."; +static struct startup_info git_startup_info; static int use_pager = -1; struct pager_config { const char *cmd; - int val; + int want; + char *value; }; static int pager_command_config(const char *var, const char *value, void *data) { struct pager_config *c = data; - if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd)) - c->val = git_config_bool(var, value); + if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd)) { + int b = git_config_maybe_bool(var, value); + if (b >= 0) + c->want = b; + else { + c->want = 1; + c->value = xstrdup(value); + } + } return 0; } @@ -28,9 +43,12 @@ int check_pager_config(const char *cmd) { struct pager_config c; c.cmd = cmd; - c.val = -1; + c.want = -1; + c.value = NULL; git_config(pager_command_config, &c); - return c.val; + if (c.value) + pager_program = c.value; + return c.want; } static void commit_pager_choice(void) { @@ -46,9 +64,9 @@ 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]; @@ -74,12 +92,26 @@ static int handle_options(const char*** argv, int* argc, int* envchanged) 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")) { + 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" ); @@ -90,7 +122,6 @@ 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); if (envchanged) @@ -115,6 +146,14 @@ static int handle_options(const char*** argv, int* argc, int* envchanged) setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0); 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 { fprintf(stderr, "Unknown option: %s\n", cmd); usage(git_usage_string); @@ -122,9 +161,8 @@ 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) @@ -132,7 +170,7 @@ 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; @@ -143,25 +181,37 @@ static int handle_alias(int *argcp, const char ***argv) 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'\n", - alias_string + 1, alias_command); + const char **alias_argv; + int argc = *argcp, i; + struct strbuf sb = STRBUF_INIT; + const char *env[2]; + + commit_pager_choice(); + + /* build alias_argv */ + alias_argv = xmalloc(sizeof(*alias_argv) * (argc + 1)); + alias_argv[0] = alias_string + 1; + for (i = 1; i < argc; ++i) + alias_argv[i] = (*argv)[i]; + alias_argv[argc] = NULL; + + strbuf_addstr(&sb, "GIT_PREFIX="); + if (subdir) + strbuf_addstr(&sb, subdir); + env[0] = sb.buf; + env[1] = NULL; + ret = run_command_v_opt_cd_env(alias_argv, RUN_USING_SHELL, NULL, env); + strbuf_release(&sb); + 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" @@ -181,11 +231,10 @@ 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)); + new_argv = xrealloc(new_argv, sizeof(char *) * + (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; @@ -193,8 +242,8 @@ static int handle_alias(int *argcp, const char ***argv) ret = 1; } - if (subdir) - chdir(subdir); + if (subdir && chdir(subdir)) + die_errno("Cannot change to '%s'", subdir); errno = saved_errno; @@ -203,13 +252,14 @@ static int handle_alias(int *argcp, const char ***argv) 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) struct cmd_struct { const char *cmd; @@ -217,30 +267,41 @@ struct cmd_struct { int option; }; -static int run_command(struct cmd_struct *p, int argc, const char **argv) +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(); + if (p->option & RUN_SETUP_GENTLY) { + int nongit_ok; + prefix = setup_git_directory_gently(&nongit_ok); + } - 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 (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 ((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 && 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)) @@ -251,11 +312,11 @@ static int run_command(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; } @@ -265,34 +326,34 @@ static void handle_internal_command(int argc, const char **argv) static struct cmd_struct commands[] = { { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE }, { "annotate", cmd_annotate, RUN_SETUP }, - { "apply", cmd_apply }, + { "apply", cmd_apply, RUN_SETUP_GENTLY }, { "archive", cmd_archive }, + { "bisect--helper", cmd_bisect__helper, RUN_SETUP | NEED_WORK_TREE }, { "blame", cmd_blame, RUN_SETUP }, { "branch", cmd_branch, RUN_SETUP }, - { "bundle", cmd_bundle }, + { "bundle", cmd_bundle, RUN_SETUP_GENTLY }, { "cat-file", cmd_cat_file, RUN_SETUP }, + { "check-attr", cmd_check_attr, 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}, - { "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 }, + { "clone", cmd_clone }, { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE }, { "commit-tree", cmd_commit_tree, RUN_SETUP }, - { "config", cmd_config }, + { "config", cmd_config, RUN_SETUP_GENTLY }, { "count-objects", cmd_count_objects, RUN_SETUP }, { "describe", cmd_describe, RUN_SETUP }, { "diff", cmd_diff }, - { "diff-files", cmd_diff_files, RUN_SETUP }, + { "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 }, @@ -300,37 +361,50 @@ static void handle_internal_command(int argc, const char **argv) { "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 }, + { "grep", cmd_grep, RUN_SETUP_GENTLY }, + { "hash-object", cmd_hash_object }, { "help", cmd_help }, -#ifndef NO_CURL - { "http-fetch", cmd_http_fetch, RUN_SETUP }, -#endif + { "index-pack", cmd_index_pack, RUN_SETUP_GENTLY }, { "init", cmd_init_db }, { "init-db", cmd_init_db }, - { "log", cmd_log, RUN_SETUP | USE_PAGER }, + { "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 }, - { "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-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 }, - { "peek-remote", cmd_ls_remote }, + { "pack-redundant", cmd_pack_redundant, RUN_SETUP }, + { "pack-refs", cmd_pack_refs, RUN_SETUP }, + { "patch-id", cmd_patch_id }, + { "peek-remote", cmd_ls_remote, RUN_SETUP_GENTLY }, { "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 }, + { "remote-ext", cmd_remote_ext }, + { "remote-fd", cmd_remote_fd }, + { "replace", cmd_replace, RUN_SETUP }, + { "repo-config", cmd_repo_config, RUN_SETUP_GENTLY }, { "rerere", cmd_rerere, RUN_SETUP }, { "reset", cmd_reset, RUN_SETUP }, { "rev-list", cmd_rev_list, RUN_SETUP }, @@ -338,25 +412,28 @@ static void handle_internal_command(int argc, const char **argv) { "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 }, + { "shortlog", cmd_shortlog, RUN_SETUP_GENTLY | USE_PAGER }, + { "show", cmd_show, RUN_SETUP }, { "show-branch", cmd_show_branch, RUN_SETUP }, - { "show", cmd_show, RUN_SETUP | USE_PAGER }, + { "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 }, { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP }, { "tag", cmd_tag, RUN_SETUP }, { "tar-tree", cmd_tar_tree }, + { "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 }, + { "var", cmd_var, RUN_SETUP_GENTLY }, + { "verify-pack", cmd_verify_pack }, { "verify-tag", cmd_verify_tag, RUN_SETUP }, { "version", cmd_version }, - { "whatchanged", cmd_whatchanged, RUN_SETUP | USE_PAGER }, + { "whatchanged", cmd_whatchanged, RUN_SETUP }, { "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; @@ -364,7 +441,7 @@ static void handle_internal_command(int argc, const char **argv) if (sizeof(ext) > 1) { i = strlen(argv[0]) - strlen(ext); if (i > 0 && !strcmp(argv[0] + i, ext)) { - char *argv0 = strdup(argv[0]); + char *argv0 = xstrdup(argv[0]); argv[0] = cmd = argv0; argv0[i] = '\0'; } @@ -380,16 +457,18 @@ static void handle_internal_command(int argc, const char **argv) struct cmd_struct *p = commands+i; if (strcmp(p->cmd, cmd)) continue; - exit(run_command(p, argc, argv)); + exit(run_builtin(p, argc, argv)); } } static void execv_dashed_external(const char **argv) { - struct strbuf cmd; + struct strbuf cmd = STRBUF_INIT; const char *tmp; + int status; + + commit_pager_choice(); - strbuf_init(&cmd, 0); strbuf_addf(&cmd, "git-%s", argv[0]); /* @@ -403,37 +482,53 @@ static void execv_dashed_external(const char **argv) trace_argv_printf(argv, "trace: exec:"); - /* execvp() can only ever return if it fails */ - execvp(cmd.buf, (char **)argv); - - trace_printf("trace: exec failed: %s\n", strerror(errno)); + /* + * if we fail because the command is not found, it is + * OK to return. Otherwise, we just pass along the status code. + */ + status = run_command_v_opt(argv, RUN_SILENT_EXEC_FAILURE); + if (status >= 0 || errno != ENOENT) + exit(status); argv[0] = tmp; strbuf_release(&cmd); } - -int main(int argc, const char **argv) +static int run_argv(int *argcp, const char ***argv) { - const char *cmd = argv[0] && *argv[0] ? argv[0] : "git-help"; - char *slash = (char *)cmd + strlen(cmd); int done_alias = 0; - /* - * Take the basename of argv[0] as the command - * name, and the dirname as the default exec_path - * if we don't have anything better. - */ - do - --slash; - while (cmd <= slash && !is_dir_sep(*slash)); - if (cmd <= slash) { - *slash++ = 0; - git_set_argv0_path(cmd); - cmd = slash; + while (1) { + /* See if it's an internal command */ + handle_internal_command(*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 || !handle_alias(argcp, argv)) + break; + done_alias = 1; } + return done_alias; +} + + +int main(int argc, const char **argv) +{ + const char *cmd; + + startup_info = &git_startup_info; + + cmd = git_extract_argv0_path(argv[0]); + if (!cmd) + cmd = "git-help"; + /* * "git-xxxx" is the same as "git xxxx", but we obviously: * @@ -455,12 +550,12 @@ int main(int argc, const char **argv) argv++; argc--; handle_options(&argv, &argc, NULL); - commit_pager_choice(); if (argc > 0) { if (!prefixcmp(argv[0], "--")) argv[0] += 2; } 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); @@ -470,36 +565,29 @@ int main(int argc, const char **argv) /* * 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) { - /* See if it's an internal command */ - handle_internal_command(argc, 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 || !handle_alias(&argc, &argv)) + static int done_help = 0; + static int was_alias = 0; + was_alias = run_argv(&argc, &argv); + if (errno != ENOENT) break; - done_alias = 1; - } - - if (errno == ENOENT) { - if (done_alias) { + 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); } - help_unknown_cmd(cmd); + if (!done_help) { + cmd = argv[0] = help_unknown_cmd(cmd); + done_help = 1; + } else + break; } fprintf(stderr, "Failed to run command '%s': %s\n", |