#include "quote.h"
const char git_usage_string[] =
- "git [--version] [--exec-path[=GIT_EXEC_PATH]] [-p|--paginate] [--bare] [--git-dir=GIT_DIR] [--help] COMMAND [ARGS]";
+ "git [--version] [--exec-path[=GIT_EXEC_PATH]] [-p|--paginate] [--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE] [--help] COMMAND [ARGS]";
static void prepend_to_path(const char *dir, int len)
{
free(path);
}
-static int handle_options(const char*** argv, int* argc)
+static int handle_options(const char*** argv, int* argc, int* envchanged)
{
int handled = 0;
usage(git_usage_string);
}
setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1);
+ if (envchanged)
+ *envchanged = 1;
(*argv)++;
(*argc)--;
handled++;
} else if (!prefixcmp(cmd, "--git-dir=")) {
setenv(GIT_DIR_ENVIRONMENT, cmd + 10, 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 (!prefixcmp(cmd, "--work-tree=")) {
+ setenv(GIT_WORK_TREE_ENVIRONMENT, cmd + 12, 1);
+ if (envchanged)
+ *envchanged = 1;
} else if (!strcmp(cmd, "--bare")) {
static char git_dir[PATH_MAX+1];
setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 1);
+ if (envchanged)
+ *envchanged = 1;
} else {
fprintf(stderr, "Unknown option: %s\n", cmd);
usage(git_usage_string);
static int handle_alias(int *argcp, const char ***argv)
{
- int nongit = 0, ret = 0, saved_errno = errno;
+ int nongit = 0, envchanged = 0, ret = 0, saved_errno = errno;
const char *subdir;
int count, option_count;
const char** new_argv;
git_config(git_alias_config);
if (alias_string) {
if (alias_string[0] == '!') {
+ if (*argcp > 1) {
+ int i, sz = PATH_MAX;
+ char *s = xmalloc(sz), *new_alias = s;
+
+ add_to_string(&s, &sz, alias_string, 0);
+ free(alias_string);
+ alias_string = new_alias;
+ for (i = 1; i < *argcp &&
+ !add_to_string(&s, &sz, " ", 0) &&
+ !add_to_string(&s, &sz, (*argv)[i], 1)
+ ; i++)
+ ; /* do nothing */
+ if (!sz)
+ die("Too many or long arguments");
+ }
trace_printf("trace: alias to shell cmd: %s => %s\n",
alias_command, alias_string + 1);
ret = system(alias_string + 1);
alias_string + 1, alias_command);
}
count = split_cmdline(alias_string, &new_argv);
- option_count = handle_options(&new_argv, &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;
* require working tree to be present -- anything uses this needs
* RUN_SETUP for reading from the configuration file.
*/
-#define NOT_BARE (1<<2)
+#define NEED_WORK_TREE (1<<2)
-static void handle_internal_command(int argc, const char **argv, char **envp)
+struct cmd_struct {
+ const char *cmd;
+ int (*fn)(int, const char **, const char *);
+ int option;
+};
+
+static int run_command(struct cmd_struct *p, int argc, const char **argv)
+{
+ int status;
+ struct stat st;
+ const char *prefix;
+
+ prefix = NULL;
+ if (p->option & RUN_SETUP)
+ prefix = setup_git_directory();
+ if (p->option & USE_PAGER)
+ setup_pager();
+ if (p->option & NEED_WORK_TREE) {
+ const char *work_tree = get_git_work_tree();
+ const char *git_dir = get_git_dir();
+ if (!is_absolute_path(git_dir))
+ set_git_dir(make_absolute_path(git_dir));
+ if (!work_tree || chdir(work_tree))
+ die("%s must be run in a work tree", p->cmd);
+ }
+ trace_argv_printf(argv, argc, "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("write failure on standard output: %s", strerror(errno));
+ if (ferror(stdout))
+ die("unknown write failure on standard output");
+ if (fclose(stdout))
+ die("close failed on standard output: %s", strerror(errno));
+ return 0;
+}
+
+static void handle_internal_command(int argc, const char **argv)
{
const char *cmd = argv[0];
- static struct cmd_struct {
- const char *cmd;
- int (*fn)(int, const char **, const char *);
- int option;
- } commands[] = {
- { "add", cmd_add, RUN_SETUP | NOT_BARE },
- { "annotate", cmd_annotate, USE_PAGER },
+ static struct cmd_struct commands[] = {
+ { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE },
+ { "annotate", cmd_annotate, RUN_SETUP },
{ "apply", cmd_apply },
{ "archive", cmd_archive },
{ "blame", cmd_blame, RUN_SETUP },
{ "cat-file", cmd_cat_file, RUN_SETUP },
{ "checkout-index", cmd_checkout_index, RUN_SETUP },
{ "check-ref-format", cmd_check_ref_format },
- { "check-attr", cmd_check_attr, RUN_SETUP | NOT_BARE },
+ { "check-attr", cmd_check_attr, RUN_SETUP | NEED_WORK_TREE },
{ "cherry", cmd_cherry, RUN_SETUP },
- { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NOT_BARE },
+ { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE },
{ "commit-tree", cmd_commit_tree, RUN_SETUP },
{ "config", cmd_config },
{ "count-objects", cmd_count_objects, RUN_SETUP },
{ "mailsplit", cmd_mailsplit },
{ "merge-base", cmd_merge_base, RUN_SETUP },
{ "merge-file", cmd_merge_file },
- { "mv", cmd_mv, RUN_SETUP | NOT_BARE },
+ { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE },
{ "name-rev", cmd_name_rev, RUN_SETUP },
{ "pack-objects", cmd_pack_objects, RUN_SETUP },
- { "pickaxe", cmd_blame, RUN_SETUP | USE_PAGER },
+ { "pickaxe", cmd_blame, RUN_SETUP },
{ "prune", cmd_prune, RUN_SETUP },
{ "prune-packed", cmd_prune_packed, RUN_SETUP },
{ "push", cmd_push, RUN_SETUP },
{ "rerere", cmd_rerere, RUN_SETUP },
{ "rev-list", cmd_rev_list, RUN_SETUP },
{ "rev-parse", cmd_rev_parse, RUN_SETUP },
- { "revert", cmd_revert, RUN_SETUP | NOT_BARE },
- { "rm", cmd_rm, RUN_SETUP | NOT_BARE },
- { "runstatus", cmd_runstatus, RUN_SETUP | NOT_BARE },
+ { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE },
+ { "rm", cmd_rm, RUN_SETUP | NEED_WORK_TREE },
+ { "runstatus", cmd_runstatus, RUN_SETUP | NEED_WORK_TREE },
{ "shortlog", cmd_shortlog, RUN_SETUP | USE_PAGER },
{ "show-branch", cmd_show_branch, RUN_SETUP },
{ "show", cmd_show, RUN_SETUP | USE_PAGER },
for (i = 0; i < ARRAY_SIZE(commands); i++) {
struct cmd_struct *p = commands+i;
- const char *prefix;
if (strcmp(p->cmd, cmd))
continue;
-
- prefix = NULL;
- if (p->option & RUN_SETUP)
- prefix = setup_git_directory();
- if (p->option & USE_PAGER)
- setup_pager();
- if ((p->option & NOT_BARE) &&
- (is_bare_repository() || is_inside_git_dir()))
- die("%s must be run in a work tree", cmd);
- trace_argv_printf(argv, argc, "trace: built-in: git");
-
- exit(p->fn(argc, argv, prefix));
+ exit(run_command(p, argc, argv));
}
}
-int main(int argc, const char **argv, char **envp)
+int main(int argc, const char **argv)
{
const char *cmd = argv[0] ? argv[0] : "git-help";
char *slash = strrchr(cmd, '/');
if (!prefixcmp(cmd, "git-")) {
cmd += 4;
argv[0] = cmd;
- handle_internal_command(argc, argv, envp);
+ handle_internal_command(argc, argv);
die("cannot handle %s internally", cmd);
}
/* Look for flags.. */
argv++;
argc--;
- handle_options(&argv, &argc);
+ handle_options(&argv, &argc, NULL);
if (argc > 0) {
if (!prefixcmp(argv[0], "--"))
argv[0] += 2;
cmd = argv[0];
/*
- * We search for git commands in the following order:
- * - git_exec_path()
- * - the path of the "git" command if we could find it
- * in $0
- * - the regular PATH.
+ * We execute external git command via execv_git_cmd(),
+ * which looks at "--exec-path" option, GIT_EXEC_PATH
+ * environment, and $(gitexecdir) in Makefile while built,
+ * in this order. For scripted commands, we prepend
+ * the value of the exec_path variable to the PATH.
*/
if (exec_path)
prepend_to_path(exec_path, strlen(exec_path));
while (1) {
/* See if it's an internal command */
- handle_internal_command(argc, argv, envp);
+ handle_internal_command(argc, argv);
/* .. then try the external ones */
execv_git_cmd(argv);