#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>]";
+ N_("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 struct startup_info git_startup_info;
static int use_pager = -1;
-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 saved_environment;
-static void save_env(void)
-{
- int i;
- if (saved_environment)
- return;
- saved_environment = 1;
- orig_cwd = xgetcwd();
- for (i = 0; i < ARRAY_SIZE(env_names); i++) {
- orig_env[i] = getenv(env_names[i]);
- if (orig_env[i])
- orig_env[i] = xstrdup(orig_env[i]);
- }
-}
-
-static void restore_env(void)
-{
- int i;
- if (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 (orig_env[i])
- setenv(env_names[i], orig_env[i], 1);
- else
- unsetenv(env_names[i]);
- }
-}
+static void list_builtins(void);
static void commit_pager_choice(void) {
switch (use_pager) {
}
}
+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;
*envchanged = 1;
} else if (!strcmp(cmd, "--git-dir")) {
if (*argc < 2) {
- fprintf(stderr, "No directory given for --git-dir.\n" );
+ fprintf(stderr, _("no directory given for --git-dir\n" ));
usage(git_usage_string);
}
setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1);
*envchanged = 1;
} else if (!strcmp(cmd, "--namespace")) {
if (*argc < 2) {
- fprintf(stderr, "No namespace given for --namespace.\n" );
+ fprintf(stderr, _("no namespace given for --namespace\n" ));
usage(git_usage_string);
}
setenv(GIT_NAMESPACE_ENVIRONMENT, (*argv)[1], 1);
*envchanged = 1;
} else if (!strcmp(cmd, "--work-tree")) {
if (*argc < 2) {
- fprintf(stderr, "No directory given for --work-tree.\n" );
+ fprintf(stderr, _("no directory given for --work-tree\n" ));
usage(git_usage_string);
}
setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1);
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;
*envchanged = 1;
} else if (!strcmp(cmd, "-c")) {
if (*argc < 2) {
- fprintf(stderr, "-c expects a configuration string\n" );
+ fprintf(stderr, _("-c expects a configuration string\n" ));
usage(git_usage_string);
}
git_config_push_parameter((*argv)[1]);
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)--;
*envchanged = 1;
} else if (!strcmp(cmd, "-C")) {
if (*argc < 2) {
- fprintf(stderr, "No directory given for -C.\n" );
+ 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]);
+ 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);
+ fprintf(stderr, _("unknown option: %s\n"), cmd);
usage(git_usage_string);
}
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 *alias_command;
char *alias_string;
- int unused_nongit;
-
- subdir = setup_git_directory_gently(&unused_nongit);
alias_command = (*argv)[0];
alias_string = alias_lookup(alias_command);
if (alias_string) {
if (alias_string[0] == '!') {
- const char **alias_argv;
- int argc = *argcp, i;
+ 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();
- /* 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;
+ child.use_shell = 1;
+ argv_array_push(&child.args, alias_string + 1);
+ argv_array_pushv(&child.args, (*argv) + 1);
- ret = run_command_v_opt(alias_argv, RUN_USING_SHELL);
+ ret = run_command(&child);
if (ret >= 0) /* normal exit */
exit(ret);
- die_errno("While expanding alias '%s': '%s'",
+ die_errno("while expanding alias '%s': '%s'",
alias_command, alias_string + 1);
}
count = split_cmdline(alias_string, &new_argv);
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.",
+ 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 *));
ret = 1;
}
- if (subdir && chdir(subdir))
- die_errno("Cannot change to '%s'", subdir);
-
errno = saved_errno;
return ret;
* RUN_SETUP for reading from the configuration file.
*/
#define NEED_WORK_TREE (1<<3)
-#define NO_SETUP (1<<4)
+#define SUPPORT_SUPER_PREFIX (1<<4)
+#define DELAY_PAGER_CONFIG (1<<5)
struct cmd_struct {
const char *cmd;
prefix = setup_git_directory_gently(&nongit_ok);
}
- if (use_pager == -1 && p->option & (RUN_SETUP | RUN_SETUP_GENTLY))
+ 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;
}
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();
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 },
+ { "archive", cmd_archive, RUN_SETUP_GENTLY },
{ "bisect--helper", cmd_bisect__helper, RUN_SETUP },
{ "blame", cmd_blame, RUN_SETUP },
- { "branch", cmd_branch, RUN_SETUP },
+ { "branch", cmd_branch, RUN_SETUP | DELAY_PAGER_CONFIG },
{ "bundle", cmd_bundle, RUN_SETUP_GENTLY },
{ "cat-file", cmd_cat_file, RUN_SETUP },
{ "check-attr", cmd_check_attr, RUN_SETUP },
{ "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, NO_SETUP },
+ { "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 },
+ { "config", cmd_config, RUN_SETUP_GENTLY | DELAY_PAGER_CONFIG },
{ "count-objects", cmd_count_objects, RUN_SETUP },
{ "credential", cmd_credential, RUN_SETUP_GENTLY },
{ "describe", cmd_describe, 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 },
+ { "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 },
{ "hash-object", cmd_hash_object },
{ "help", cmd_help },
{ "index-pack", cmd_index_pack, RUN_SETUP_GENTLY },
- { "init", cmd_init_db, NO_SETUP },
- { "init-db", cmd_init_db, NO_SETUP },
- { "interpret-trailers", cmd_interpret_trailers, RUN_SETUP },
+ { "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 },
+ { "mailinfo", cmd_mailinfo, RUN_SETUP_GENTLY },
{ "mailsplit", cmd_mailsplit },
{ "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE },
{ "merge-base", cmd_merge_base, 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 },
+ { "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 },
+ { "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 },
{ "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 },
+ { "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 },
{ "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 },
};
return !!get_builtin(s);
}
-static void handle_builtin(int argc, const char **argv)
+static void list_builtins(void)
{
- const char *cmd = argv[0];
int i;
- static const char ext[] = STRIP_EXTENSION;
+ 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;
- 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';
- }
- }
+ strip_extension(argv);
+ cmd = argv[0];
- /* Turn "git cmd --help" into "git help cmd" */
+ /* 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) {
- if (saved_environment && (builtin->option & NO_SETUP))
- restore_env();
- else
- exit(run_builtin(builtin, argc, argv));
- }
+ 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;
- if (use_pager == -1)
+ 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();
- strbuf_addf(&cmd, "git-%s", 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;
+ 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, RUN_SILENT_EXEC_FAILURE | RUN_CLEAN_ON_EXIT);
- if (status >= 0 || errno != ENOENT)
+ status = run_command(&cmd);
+ if (status >= 0)
exit(status);
-
- argv[0] = tmp;
-
- strbuf_release(&cmd);
+ else if (errno != ENOENT)
+ exit(128);
}
static int run_argv(int *argcp, const char ***argv)
int done_alias = 0;
while (1) {
- /* See if it's a builtin */
- handle_builtin(*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);
*/
if (done_alias)
break;
- save_env();
if (!handle_alias(argcp, argv))
break;
done_alias = 1;
return done_alias;
}
-/*
- * Many parts of Git have subprograms communicate via pipe, expect the
- * upstream of a pipe to die with SIGPIPE when the downstream of a
- * pipe does not need to read all that is written. Some third-party
- * programs that ignore or block SIGPIPE for their own reason forget
- * to restore SIGPIPE handling to the default before spawning Git and
- * break this carefully orchestrated machinery.
- *
- * Restore the way SIGPIPE is handled to default, which is what we
- * expect.
- */
-static void restore_sigpipe_to_default(void)
+int cmd_main(int argc, const char **argv)
{
- sigset_t unblock;
-
- sigemptyset(&unblock);
- sigaddset(&unblock, SIGPIPE);
- sigprocmask(SIG_UNBLOCK, &unblock, NULL);
- signal(SIGPIPE, SIG_DFL);
-}
-
-int main(int argc, char **av)
-{
- const char **argv = (const char **) av;
const char *cmd;
int done_help = 0;
- startup_info = &git_startup_info;
-
- cmd = git_extract_argv0_path(argv[0]);
+ cmd = argv[0];
if (!cmd)
cmd = "git-help";
-
- /*
- * Always open file descriptors 0/1/2 to avoid clobbering files
- * in die(). It also avoids messing up when the pipes are dup'ed
- * onto stdin/stdout/stderr in the child processes we spawn.
- */
- sanitize_stdfds();
-
- restore_sigpipe_to_default();
-
- git_setup_gettext();
+ else {
+ const char *slash = find_last_dir_sep(cmd);
+ if (slash)
+ cmd = slash + 1;
+ }
trace_command_performance(argv);
if (errno != ENOENT)
break;
if (was_alias) {
- fprintf(stderr, "Expansion of alias '%s' failed; "
- "'%s' is not a git command\n",
+ fprintf(stderr, _("expansion of alias '%s' failed; "
+ "'%s' is not a git command\n"),
cmd, argv[0]);
exit(1);
}
break;
}
- fprintf(stderr, "Failed to run command '%s': %s\n",
+ fprintf(stderr, _("failed to run command '%s': %s\n"),
cmd, strerror(errno));
return 1;
projects / platform / upstream / git.git / blobdiff