summaryrefslogtreecommitdiff
path: root/builtin-reset.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2010-02-22 08:42:18 -0800
committerJunio C Hamano <gitster@pobox.com>2010-02-22 14:29:41 -0800
commit81b50f3ce40bfdd66e5d967bf82be001039a9a98 (patch)
tree7e86bb81e83c9fad73dcbdaa0ef33038137b4274 /builtin-reset.c
parent241b9254e1c8ff071d8054f8b6fbe1883b389d69 (diff)
downloadgit-81b50f3ce40bfdd66e5d967bf82be001039a9a98.tar.gz
Move 'builtin-*' into a 'builtin/' subdirectory
This shrinks the top-level directory a bit, and makes it much more pleasant to use auto-completion on the thing. Instead of [torvalds@nehalem git]$ em buil<tab> Display all 180 possibilities? (y or n) [torvalds@nehalem git]$ em builtin-sh builtin-shortlog.c builtin-show-branch.c builtin-show-ref.c builtin-shortlog.o builtin-show-branch.o builtin-show-ref.o [torvalds@nehalem git]$ em builtin-shor<tab> builtin-shortlog.c builtin-shortlog.o [torvalds@nehalem git]$ em builtin-shortlog.c you get [torvalds@nehalem git]$ em buil<tab> [type] builtin/ builtin.h [torvalds@nehalem git]$ em builtin [auto-completes to] [torvalds@nehalem git]$ em builtin/sh<tab> [type] shortlog.c shortlog.o show-branch.c show-branch.o show-ref.c show-ref.o [torvalds@nehalem git]$ em builtin/sho [auto-completes to] [torvalds@nehalem git]$ em builtin/shor<tab> [type] shortlog.c shortlog.o [torvalds@nehalem git]$ em builtin/shortlog.c which doesn't seem all that different, but not having that annoying break in "Display all 180 possibilities?" is quite a relief. NOTE! If you do this in a clean tree (no object files etc), or using an editor that has auto-completion rules that ignores '*.o' files, you won't see that annoying 'Display all 180 possibilities?' message - it will just show the choices instead. I think bash has some cut-off around 100 choices or something. So the reason I see this is that I'm using an odd editory, and thus don't have the rules to cut down on auto-completion. But you can simulate that by using 'ls' instead, or something similar. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin-reset.c')
-rw-r--r--builtin-reset.c356
1 files changed, 0 insertions, 356 deletions
diff --git a/builtin-reset.c b/builtin-reset.c
deleted file mode 100644
index 0f5022eed2..0000000000
--- a/builtin-reset.c
+++ /dev/null
@@ -1,356 +0,0 @@
-/*
- * "git reset" builtin command
- *
- * Copyright (c) 2007 Carlos Rica
- *
- * Based on git-reset.sh, which is
- *
- * Copyright (c) 2005, 2006 Linus Torvalds and Junio C Hamano
- */
-#include "cache.h"
-#include "tag.h"
-#include "object.h"
-#include "commit.h"
-#include "run-command.h"
-#include "refs.h"
-#include "diff.h"
-#include "diffcore.h"
-#include "tree.h"
-#include "branch.h"
-#include "parse-options.h"
-#include "unpack-trees.h"
-#include "cache-tree.h"
-
-static const char * const git_reset_usage[] = {
- "git reset [--mixed | --soft | --hard | --merge] [-q] [<commit>]",
- "git reset [--mixed] <commit> [--] <paths>...",
- NULL
-};
-
-enum reset_type { MIXED, SOFT, HARD, MERGE, NONE };
-static const char *reset_type_names[] = { "mixed", "soft", "hard", "merge", NULL };
-
-static char *args_to_str(const char **argv)
-{
- char *buf = NULL;
- unsigned long len, space = 0, nr = 0;
-
- for (; *argv; argv++) {
- len = strlen(*argv);
- ALLOC_GROW(buf, nr + 1 + len, space);
- if (nr)
- buf[nr++] = ' ';
- memcpy(buf + nr, *argv, len);
- nr += len;
- }
- ALLOC_GROW(buf, nr + 1, space);
- buf[nr] = '\0';
-
- return buf;
-}
-
-static inline int is_merge(void)
-{
- return !access(git_path("MERGE_HEAD"), F_OK);
-}
-
-static int reset_index_file(const unsigned char *sha1, int reset_type, int quiet)
-{
- int nr = 1;
- int newfd;
- struct tree_desc desc[2];
- struct unpack_trees_options opts;
- struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));
-
- memset(&opts, 0, sizeof(opts));
- opts.head_idx = 1;
- opts.src_index = &the_index;
- opts.dst_index = &the_index;
- opts.fn = oneway_merge;
- opts.merge = 1;
- if (!quiet)
- opts.verbose_update = 1;
- switch (reset_type) {
- case MERGE:
- opts.update = 1;
- break;
- case HARD:
- opts.update = 1;
- /* fallthrough */
- default:
- opts.reset = 1;
- }
-
- newfd = hold_locked_index(lock, 1);
-
- read_cache_unmerged();
-
- if (!fill_tree_descriptor(desc + nr - 1, sha1))
- return error("Failed to find tree of %s.", sha1_to_hex(sha1));
- if (unpack_trees(nr, desc, &opts))
- return -1;
- if (write_cache(newfd, active_cache, active_nr) ||
- commit_locked_index(lock))
- return error("Could not write new index file.");
-
- return 0;
-}
-
-static void print_new_head_line(struct commit *commit)
-{
- const char *hex, *body;
-
- hex = find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV);
- printf("HEAD is now at %s", hex);
- body = strstr(commit->buffer, "\n\n");
- if (body) {
- const char *eol;
- size_t len;
- body += 2;
- eol = strchr(body, '\n');
- len = eol ? eol - body : strlen(body);
- printf(" %.*s\n", (int) len, body);
- }
- else
- printf("\n");
-}
-
-static int update_index_refresh(int fd, struct lock_file *index_lock, int flags)
-{
- int result;
-
- 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_index(&the_index, (flags), NULL, NULL,
- "Unstaged changes after reset:") ? 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;
- 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 diff_filespec *one = q->queue[i]->one;
- if (one->mode) {
- 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);
- }
-}
-
-static int interactive_reset(const char *revision, const char **argv,
- const char *prefix)
-{
- const char **pathspec = NULL;
-
- if (*argv)
- pathspec = get_pathspec(prefix, argv);
-
- return run_add_interactive(revision, "--patch=reset", pathspec);
-}
-
-static int read_from_tree(const char *prefix, const char **argv,
- 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;
-
- 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 = &index_was_discarded;
-
- 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);
-
- 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)
-{
- const char *sep = ": ";
- const char *rla = getenv("GIT_REFLOG_ACTION");
- if (!rla)
- rla = sep = "";
- if (snprintf(buf, size, "%s%s%s", rla, sep, action) >= size)
- warning("Reflog action message too long: %.*s...", 50, buf);
-}
-
-int cmd_reset(int argc, const char **argv, const char *prefix)
-{
- int i = 0, reset_type = NONE, update_ref_status = 0, quiet = 0;
- int patch_mode = 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];
- const struct option options[] = {
- OPT__QUIET(&quiet),
- 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_SET_INT(0, "merge", &reset_type,
- "reset HEAD, index and working tree", MERGE),
- OPT_BOOLEAN('p', "patch", &patch_mode, "select hunks interactively"),
- OPT_END()
- };
-
- git_config(git_default_config, NULL);
-
- argc = parse_options(argc, argv, prefix, 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], "--")) {
- i++; /* reset to HEAD, possibly with paths */
- } else if (i + 1 < argc && !strcmp(argv[i+1], "--")) {
- rev = argv[i];
- i += 2;
- }
- /*
- * Otherwise, argv[i] could be either <rev> or <paths> and
- * has to be unambiguous.
- */
- 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 (get_sha1(rev, sha1))
- die("Failed to resolve '%s' as a valid ref.", rev);
-
- commit = lookup_commit_reference(sha1);
- if (!commit)
- die("Could not parse object '%s'.", rev);
- hashcpy(sha1, commit->object.sha1);
-
- if (patch_mode) {
- if (reset_type != NONE)
- die("--patch is incompatible with --{hard,mixed,soft}");
- return interactive_reset(rev, argv + i, prefix);
- }
-
- /* git reset tree [--] paths... can be used to
- * load chosen paths from the tree into the index without
- * affecting the working tree nor HEAD. */
- if (i < argc) {
- if (reset_type == MIXED)
- warning("--mixed option is deprecated with paths.");
- else if (reset_type != NONE)
- die("Cannot do %s reset with paths.",
- reset_type_names[reset_type]);
- return read_from_tree(prefix, argv + i, sha1,
- quiet ? REFRESH_QUIET : REFRESH_IN_PORCELAIN);
- }
- if (reset_type == NONE)
- reset_type = MIXED; /* by default */
-
- if (reset_type == HARD || reset_type == MERGE)
- setup_work_tree();
-
- if (reset_type == MIXED && is_bare_repository())
- die("%s reset is not allowed in a bare repository",
- reset_type_names[reset_type]);
-
- /* 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() || 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, quiet))
- die("Could not reset index file to revision '%s'.", rev);
-
- /* Any resets update HEAD to the head being switched to,
- * saving the previous head in ORIG_HEAD before. */
- if (!get_sha1("ORIG_HEAD", sha1_old_orig))
- old_orig = sha1_old_orig;
- if (!get_sha1("HEAD", sha1_orig)) {
- orig = sha1_orig;
- prepend_reflog_action("updating ORIG_HEAD", msg, sizeof(msg));
- update_ref(msg, "ORIG_HEAD", orig, old_orig, 0, MSG_ON_ERR);
- }
- else if (old_orig)
- delete_ref("ORIG_HEAD", old_orig, 0);
- prepend_reflog_action("updating HEAD", msg, sizeof(msg));
- update_ref_status = update_ref(msg, "HEAD", sha1, orig, 0, MSG_ON_ERR);
-
- switch (reset_type) {
- case HARD:
- 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(0, NULL,
- quiet ? REFRESH_QUIET : REFRESH_IN_PORCELAIN);
- break;
- }
-
- remove_branch_state();
-
- free(reflog_action);
-
- return update_ref_status;
-}