#include "diff.h"
#include "diffcore.h"
#include "tree.h"
+#include "branch.h"
+#include "parse-options.h"
-static const char builtin_reset_usage[] =
-"git-reset [--mixed | --soft | --hard] [<commit-ish>] [ [--] <paths>...]";
+static const char * const git_reset_usage[] = {
+ "git reset [--mixed | --soft | --hard] [-q] [<commit>]",
+ "git reset [--mixed] <commit> [--] <paths>...",
+ NULL
+};
static char *args_to_str(const char **argv)
{
return !access(git_path("MERGE_HEAD"), F_OK);
}
-static int unmerged_files(void)
-{
- char b;
- ssize_t len;
- struct child_process cmd;
- const char *argv_ls_files[] = {"ls-files", "--unmerged", NULL};
-
- memset(&cmd, 0, sizeof(cmd));
- cmd.argv = argv_ls_files;
- cmd.git_cmd = 1;
- cmd.out = -1;
-
- if (start_command(&cmd))
- die("Could not run sub-command: git ls-files");
-
- len = xread(cmd.out, &b, 1);
- if (len < 0)
- die("Could not read output from git ls-files: %s",
- strerror(errno));
- finish_command(&cmd);
-
- return len;
-}
-
-static int reset_index_file(const unsigned char *sha1, int is_hard_reset)
+static int reset_index_file(const unsigned char *sha1, int is_hard_reset, int quiet)
{
int i = 0;
const char *args[6];
args[i++] = "read-tree";
- args[i++] = "-v";
+ if (!quiet)
+ args[i++] = "-v";
args[i++] = "--reset";
if (is_hard_reset)
args[i++] = "-u";
static void print_new_head_line(struct commit *commit)
{
- const char *hex, *dots = "...", *body;
+ const char *hex, *body;
hex = find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV);
- if (!hex) {
- hex = sha1_to_hex(commit->object.sha1);
- dots = "";
- }
- printf("HEAD is now at %s%s", hex, dots);
+ printf("HEAD is now at %s", hex);
body = strstr(commit->buffer, "\n\n");
if (body) {
const char *eol;
printf("\n");
}
-static int update_index_refresh(void)
+static int update_index_refresh(int fd, struct lock_file *index_lock, int flags)
{
- const char *argv_update_index[] = {"update-index", "--refresh", NULL};
- return run_command_v_opt(argv_update_index, RUN_GIT_CMD);
-}
+ int result;
-struct update_cb_data {
- int index_fd;
- struct lock_file *lock;
- int exit_code;
-};
+ if (!index_lock) {
+ index_lock = xcalloc(1, sizeof(struct lock_file));
+ fd = hold_locked_index(index_lock, 1);
+ }
+
+ if (read_cache() < 0)
+ return error("Could not read index");
+
+ result = refresh_cache(flags) ? 1 : 0;
+ if (write_cache(fd, active_cache, active_nr) ||
+ commit_locked_index(index_lock))
+ return error ("Could not refresh index");
+ return result;
+}
static void update_index_from_diff(struct diff_queue_struct *q,
struct diff_options *opt, void *data)
{
int i;
- struct update_cb_data *cb = data;
+ int *discard_flag = data;
/* do_diff_cache() mangled the index */
discard_cache();
+ *discard_flag = 1;
read_cache();
for (i = 0; i < q->nr; i++) {
struct cache_entry *ce;
ce = make_cache_entry(one->mode, one->sha1, one->path,
0, 0);
+ if (!ce)
+ die("make_cache_entry failed for path '%s'",
+ one->path);
add_cache_entry(ce, ADD_CACHE_OK_TO_ADD |
ADD_CACHE_OK_TO_REPLACE);
} else
remove_file_from_cache(one->path);
}
-
- cb->exit_code = write_cache(cb->index_fd, active_cache, active_nr) ||
- close(cb->index_fd) ||
- commit_locked_index(cb->lock);
}
static int read_from_tree(const char *prefix, const char **argv,
- unsigned char *tree_sha1)
+ unsigned char *tree_sha1, int refresh_flags)
{
+ struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));
+ int index_fd, index_was_discarded = 0;
struct diff_options opt;
- struct update_cb_data cb;
memset(&opt, 0, sizeof(opt));
diff_tree_setup_paths(get_pathspec(prefix, (const char **)argv), &opt);
opt.output_format = DIFF_FORMAT_CALLBACK;
opt.format_callback = update_index_from_diff;
- opt.format_callback_data = &cb;
+ opt.format_callback_data = &index_was_discarded;
- cb.lock = xcalloc(1, sizeof(struct lock_file));
- cb.index_fd = hold_locked_index(cb.lock, 1);
- cb.exit_code = 0;
+ index_fd = hold_locked_index(lock, 1);
+ index_was_discarded = 0;
read_cache();
if (do_diff_cache(tree_sha1, &opt))
return 1;
diffcore_std(&opt);
diff_flush(&opt);
+ diff_tree_release_paths(&opt);
- return cb.exit_code;
+ if (!index_was_discarded)
+ /* The index is still clobbered from do_diff_cache() */
+ discard_cache();
+ return update_index_refresh(index_fd, lock, refresh_flags);
}
static void prepend_reflog_action(const char *action, char *buf, size_t size)
int cmd_reset(int argc, const char **argv, const char *prefix)
{
- int i = 1, reset_type = NONE, update_ref_status = 0;
+ int i = 0, reset_type = NONE, update_ref_status = 0, quiet = 0;
const char *rev = "HEAD";
unsigned char sha1[20], *orig = NULL, sha1_orig[20],
*old_orig = NULL, sha1_old_orig[20];
struct commit *commit;
char *reflog_action, msg[1024];
-
- git_config(git_default_config);
-
+ const struct option options[] = {
+ OPT_SET_INT(0, "mixed", &reset_type,
+ "reset HEAD and index", MIXED),
+ OPT_SET_INT(0, "soft", &reset_type, "reset only HEAD", SOFT),
+ OPT_SET_INT(0, "hard", &reset_type,
+ "reset HEAD, index and working tree", HARD),
+ OPT_BOOLEAN('q', NULL, &quiet,
+ "disable showing new HEAD in hard reset and progress message"),
+ OPT_END()
+ };
+
+ git_config(git_default_config, NULL);
+
+ argc = parse_options(argc, argv, options, git_reset_usage,
+ PARSE_OPT_KEEP_DASHDASH);
reflog_action = args_to_str(argv);
setenv("GIT_REFLOG_ACTION", reflog_action, 0);
+ /*
+ * Possible arguments are:
+ *
+ * git reset [-opts] <rev> <paths>...
+ * git reset [-opts] <rev> -- <paths>...
+ * git reset [-opts] -- <paths>...
+ * git reset [-opts] <paths>...
+ *
+ * At this point, argv[i] points immediately after [-opts].
+ */
+
if (i < argc) {
- if (!strcmp(argv[i], "--mixed")) {
- reset_type = MIXED;
- i++;
+ if (!strcmp(argv[i], "--")) {
+ i++; /* reset to HEAD, possibly with paths */
+ } else if (i + 1 < argc && !strcmp(argv[i+1], "--")) {
+ rev = argv[i];
+ i += 2;
}
- else if (!strcmp(argv[i], "--soft")) {
- reset_type = SOFT;
- i++;
- }
- else if (!strcmp(argv[i], "--hard")) {
- reset_type = HARD;
- i++;
+ /*
+ * Otherwise, argv[i] could be either <rev> or <paths> and
+ * has to be unambigous.
+ */
+ else if (!get_sha1(argv[i], sha1)) {
+ /*
+ * Ok, argv[i] looks like a rev; it should not
+ * be a filename.
+ */
+ verify_non_filename(prefix, argv[i]);
+ rev = argv[i++];
+ } else {
+ /* Otherwise we treat this as a filename */
+ verify_filename(prefix, argv[i]);
}
}
- if (i < argc && argv[i][0] != '-')
- rev = argv[i++];
-
if (get_sha1(rev, sha1))
die("Failed to resolve '%s' as a valid ref.", rev);
die("Could not parse object '%s'.", rev);
hashcpy(sha1, commit->object.sha1);
- if (i < argc && !strcmp(argv[i], "--"))
- i++;
- else if (i < argc && argv[i][0] == '-')
- usage(builtin_reset_usage);
-
/* git reset tree [--] paths... can be used to
* load chosen paths from the tree into the index without
* affecting the working tree nor HEAD. */
else if (reset_type != NONE)
die("Cannot do %s reset with paths.",
reset_type_names[reset_type]);
- if (read_from_tree(prefix, argv + i, sha1))
- return 1;
- return update_index_refresh() ? 1 : 0;
+ return read_from_tree(prefix, argv + i, sha1,
+ quiet ? REFRESH_QUIET : REFRESH_SAY_CHANGED);
}
if (reset_type == NONE)
reset_type = MIXED; /* by default */
+ if (reset_type == HARD && is_bare_repository())
+ die("hard reset makes no sense in a bare repository");
+
/* Soft reset does not touch the index file nor the working tree
* at all, but requires them in a good order. Other resets reset
* the index file to the tree object we are switching to. */
if (reset_type == SOFT) {
- if (is_merge() || unmerged_files())
+ if (is_merge() || read_cache() < 0 || unmerged_cache())
die("Cannot do a soft reset in the middle of a merge.");
}
- else if (reset_index_file(sha1, (reset_type == HARD)))
+ else if (reset_index_file(sha1, (reset_type == HARD), quiet))
die("Could not reset index file to revision '%s'.", rev);
/* Any resets update HEAD to the head being switched to,
switch (reset_type) {
case HARD:
- if (!update_ref_status)
+ if (!update_ref_status && !quiet)
print_new_head_line(commit);
break;
case SOFT: /* Nothing else to do. */
break;
case MIXED: /* Report what has not been updated. */
- update_index_refresh();
+ update_index_refresh(0, NULL,
+ quiet ? REFRESH_QUIET : REFRESH_SAY_CHANGED);
break;
}
- unlink(git_path("MERGE_HEAD"));
- unlink(git_path("rr-cache/MERGE_RR"));
- unlink(git_path("MERGE_MSG"));
- unlink(git_path("SQUASH_MSG"));
+ remove_branch_state();
free(reflog_action);