static int do_pick_commit(void)
{
unsigned char head[20];
struct commit *base, *next, *parent;
const char *base_label, *next_label;
struct commit_message msg = { NULL, NULL, NULL, NULL, NULL };
char *defmsg = NULL;
struct strbuf msgbuf = STRBUF_INIT;
int res;
if (no_commit) {
/*
* We do not intend to commit immediately. We just want to
* merge the differences in, so let's compute the tree
* that represents the "current" state for merge-recursive
* to work on.
*/
if (write_cache_as_tree(head, 0, NULL))
die (_("Your index file is unmerged."));
} else {
if (get_sha1("HEAD", head))
die (_("You do not have a valid HEAD"));
if (index_differs_from("HEAD", 0))
die_dirty_index(me);
}
discard_cache();
if (!commit->parents) {
parent = NULL;
}
else if (commit->parents->next) {
/* Reverting or cherry-picking a merge commit */
int cnt;
struct commit_list *p;
if (!mainline)
die(_("Commit %s is a merge but no -m option was given."),
sha1_to_hex(commit->object.sha1));
for (cnt = 1, p = commit->parents;
cnt != mainline && p;
cnt++)
p = p->next;
if (cnt != mainline || !p)
die(_("Commit %s does not have parent %d"),
sha1_to_hex(commit->object.sha1), mainline);
parent = p->item;
} else if (0 < mainline)
die(_("Mainline was specified but commit %s is not a merge."),
sha1_to_hex(commit->object.sha1));
else
parent = commit->parents->item;
if (allow_ff && parent && !hashcmp(parent->object.sha1, head))
return fast_forward_to(commit->object.sha1, head);
if (parent && parse_commit(parent) < 0)
/* TRANSLATORS: The first %s will be "revert" or
"cherry-pick", the second %s a SHA1 */
die(_("%s: cannot parse parent commit %s"),
me, sha1_to_hex(parent->object.sha1));
if (get_message(commit->buffer, &msg) != 0)
die(_("Cannot get commit message for %s"),
sha1_to_hex(commit->object.sha1));
/*
* "commit" is an existing commit. We would want to apply
* the difference it introduces since its first parent "prev"
* on top of the current HEAD if we are cherry-pick. Or the
* reverse of it if we are revert.
*/
defmsg = git_pathdup("MERGE_MSG");
if (action == REVERT) {
base = commit;
base_label = msg.label;
next = parent;
next_label = msg.parent_label;
strbuf_addstr(&msgbuf, "Revert \"");
strbuf_addstr(&msgbuf, msg.subject);
strbuf_addstr(&msgbuf, "\"\n\nThis reverts commit ");
strbuf_addstr(&msgbuf, sha1_to_hex(commit->object.sha1));
if (commit->parents && commit->parents->next) {
strbuf_addstr(&msgbuf, ", reversing\nchanges made to ");
strbuf_addstr(&msgbuf, sha1_to_hex(parent->object.sha1));
}
strbuf_addstr(&msgbuf, ".\n");
} else {
base = parent;
base_label = msg.parent_label;
next = commit;
next_label = msg.label;
add_message_to_msg(&msgbuf, msg.message);
if (no_replay) {
strbuf_addstr(&msgbuf, "(cherry picked from commit ");
strbuf_addstr(&msgbuf, sha1_to_hex(commit->object.sha1));
strbuf_addstr(&msgbuf, ")\n");
}
if (!no_commit)
write_cherry_pick_head();
}
if (!strategy || !strcmp(strategy, "recursive") || action == REVERT) {
res = do_recursive_merge(base, next, base_label, next_label,
head, &msgbuf);
write_message(&msgbuf, defmsg);
} else {
struct commit_list *common = NULL;
struct commit_list *remotes = NULL;
write_message(&msgbuf, defmsg);
commit_list_insert(base, &common);
commit_list_insert(next, &remotes);
res = try_merge_command(strategy, xopts_nr, xopts, common,
sha1_to_hex(head), remotes);
free_commit_list(common);
free_commit_list(remotes);
}
if (res) {
error(action == REVERT
? _("could not revert %s... %s")
: _("could not apply %s... %s"),
find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV),
msg.subject);
print_advice();
rerere(allow_rerere_auto);
} else {
if (!no_commit)
res = run_git_commit(defmsg);
}
free_message(&msg);
free(defmsg);
return res;
}
static void bcm63xx_wdt_isr(void *data)
{
struct pt_regs *regs = get_irq_regs();
die(PFX " fire", regs);
}
static void help(void)
{
printf("\nmausezahn %s, a fast versatile traffic generator\n", VERSION_STRING);
puts("http://www.netsniff-ng.org\n\n"
"Usage: mausezahn [options] [interface] <keyword>|<arg-string>|<hex-string>\n"
"Options:\n"
" -x <port> Interactive mode with telnet CLI, default port: 25542\n"
" -4 IPv4 mode (default)\n"
" -6 IPv6 mode\n"
" -c <count> Send packet count times, default:1, infinite:0\n"
" -d <delay> Apply delay between transmissions. The delay value can be\n"
" specified in usec (default, no additional unit needed), or in\n"
" msec (e.g. 100m or 100msec), or in seconds (e.g. 100s or 100sec)\n"
" -r Multiplies the specified delay with a random value\n"
" -p <length> Pad the raw frame to specified length (using random bytes)\n"
" -a <srcmac|keyword> Use specified source mac address, no matter what has\n"
" been specified with other arguments; keywords see below,\n"
" Default is own interface\n"
" -b <dstmac|keyword> Same with destination mac address; keywords:\n"
" rand Use a random MAC address\n"
" bc Use a broadcast MAC address\n"
" own Use own interface MAC address (default for source MAC)\n"
" stp Use IEEE 802.1d STP multicast address\n"
" cisco Use Cisco multicast address as used for CDP, VTP, or PVST+\n"
" -A <srcip> Use specified source IP address (default is own interface IP)\n"
" -B <dstip|dnsname> Send packet to specified destination IP or domain name\n"
" -P <ascii payload> Use the specified ASCII payload\n"
" -f <filename> Read the ASCII payload from a file\n"
" -F <filename> Read the hexadecimal payload from a file\n"
" -Q <[CoS:]vlan> Specify 802.1Q VLAN tag and optional Class of Service, you can\n"
" specify multiple 802.1Q VLAN tags (QinQ...) by separating them\n"
" via a comma or a period (e.g. '5:10,20,2:30')\n"
" -t <packet-type> Specify packet type for autobuild (you don't need to care for\n"
" encapsulations in lower layers, most packet types allow/require\n"
" additional packet-specific arguments in an <arg-string>;\n"
" Currently supported types: arp, bpdu, cdp, ip, icmp, udp, tcp,\n"
" dns, rtp, syslog, lldp and more;\n"
" For context-help use 'help' as <arg-string>!\n"
" -T <packet-type> Specify packet type for server mode, currently only rtp is supported;\n"
" Enter -T help or -T rtp help for further information\n"
" -M <MPLS-label> Insert a MPLS label, enter '-M help' for a syntax description\n"
" -V|VV|... Verbose and more verbose mode\n"
" -q Quiet mode, even omit 'important' standard short messages\n"
" -S Simulation mode: DOES NOT put anything on the wire, this is\n"
" typically combined with one of the verbose modes (v or V)\n"
" -v Show version\n"
" -h Print this help\n\n"
"Examples:\n"
" mausezahn -x 99\n"
" mausezahn -c 0 -d 2s -t bpdu conf\n"
" mausezahn -t cdp change -c 0\n"
" mausezahn -t syslog sev=3 -P \"You have been mausezahned.\" -A 10.1.1.109 -B 192.168.7.7\n"
" mausezahn eth0 -A rand -B 1.1.1.1 -c 0 -t tcp \"dp=1-1023, flags=syn\"\n\n"
"Note:\n"
" This tool is targeted for network developers! You should\n"
" be aware of what you are doing and what these options above\n"
" mean! Only use this tool in an isolated LAN that you own!\n\n"
"Please report bugs to <*****@*****.**>\n"
"Copyright (C) 2008-2010 Herbert Haas <*****@*****.**>,\n"
"Copyright (C) 2011 Daniel Borkmann <*****@*****.**>,\n"
"Swiss federal institute of technology (ETH Zurich)\n"
"License: GNU GPL version 2.0\n"
"This is free software: you are free to change and redistribute it.\n"
"There is NO WARRANTY, to the extent permitted by law.\n");
die();
}
void
TVM_Exec(TVM* self, TInst inst)
{
switch(inst.uNull.fOp) {
case op_die:
exit(0);
break;
case op_dump:
TVM_Dump(self);
break;
case op_nop:
break;
case op_iset:
self->fRegister[inst.uIH.fIdx] = inst.uIH.fValue;
break;
case op_iadd:
self->fRegister[inst.uIH.fIdx] += inst.uIH.fValue;
break;
case op_roll:
self->fRegister[reg_dieA] = die();
self->fRegister[reg_dieB] = die();
if(self->fRegister[reg_dieA] == self->fRegister[reg_dieB])
self->fRegister[reg_doubles] ++;
break;
case op_move_n:
{
int i;
int pos;
int d;
i = self->fRegister[reg_current_player_idx];
pos = self->fRegister[reg_player0_pos+i];
d = self->fRegister[reg_dieA] + self->fRegister[reg_dieB];
pos = pos + d;
if (pos >= 40) {
pos -= 40;
self->fRegister[reg_player0_go_count+i] += 1;
self->fRegister[reg_player0_money + i] += 200; // do this with instruction?
}
self->fRegister[reg_player0_pos+i] = pos;
}
break;
case op_land_on:
{
int pos;
int i;
i = self->fRegister[reg_current_player_idx];
pos = self->fRegister[reg_player0_pos+i];
if (pos == 30){ // go to jail
self->fRegister[reg_player0_pos+i] = 10; //jail
self->fRegister[reg_player0_state+i] = 1; //jailed, jail count 1, about to have first time
}
// fire land event, card, go to jail, property and so on.
// get sallary.
}
break;
case op_goto_jail:
{
int pos;
int i;
i = self->fRegister[reg_current_player_idx];
pos = self->fRegister[reg_player0_pos+i];
self->fRegister[reg_player0_pos+i] = 10; //jail
self->fRegister[reg_player0_state+i] = 1; //jailed, jail count 1, about to have first time
}
case op_jump:
{
self->fRegister[reg_pc] = inst.uIH.fValue;
}
break;
case op_jump_on_doubles:
if (self->fRegister[reg_dieB] == self->fRegister[reg_dieA]){
self->fRegister[reg_pc] = inst.uIH.fValue;
}
break;
case op_jump_on_3rd:
if (self->fRegister[reg_player0_state + self->fRegister[reg_current_player_idx]] == 3){
self->fRegister[reg_pc] = inst.uIH.fValue;
}
break;
case op_cmp:
{
int x, y, dst;
x = self->fRegister[inst.uIII.fFirst];
y = self->fRegister[inst.uIII.fSecond];
dst = inst.uIII.fThird;
if ( x == y)
self->fRegister[dst] = 0;
if ( x > y)
self->fRegister[dst] = 1;
if ( x < y)
self->fRegister[dst] = -1;
}
break;
case op_jump_on_zero:
if (self->fRegister[self->fRegister[inst.uIH.fIdx]] == 0){
self->fRegister[reg_pc] = inst.uIH.fValue;
}
break;
case op_jump_on_positive:
if (self->fRegister[self->fRegister[inst.uIH.fIdx]] > 0){
self->fRegister[reg_pc] = inst.uIH.fValue;
}
break;
case op_jump_on_negative:
if (self->fRegister[self->fRegister[inst.uIH.fIdx]] < 0){
self->fRegister[reg_pc] = inst.uIH.fValue;
}
break;
case op_next:
{
int p, mask, bits;
p = self->fRegister[reg_current_player_idx] + 1;
bits = 1 << p;
mask = self->fRegister[reg_active_mask];
while (! (mask & bits)){
p++ ;
if (p >= MAXPLAYER)
p = 0;
bits = 1 << p;
}
self->fRegister[reg_current_player_idx] = p;
}
break;
default:
break;
}
}
static int merge_working_tree(const struct checkout_opts *opts,
struct branch_info *old_branch_info,
struct branch_info *new_branch_info,
int *writeout_error)
{
int ret;
struct lock_file lock_file = LOCK_INIT;
hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
if (read_cache_preload(NULL) < 0)
return error(_("index file corrupt"));
resolve_undo_clear();
if (opts->force) {
ret = reset_tree(get_commit_tree(new_branch_info->commit),
opts, 1, writeout_error);
if (ret)
return ret;
} else {
struct tree_desc trees[2];
struct tree *tree;
struct unpack_trees_options topts;
memset(&topts, 0, sizeof(topts));
topts.head_idx = -1;
topts.src_index = &the_index;
topts.dst_index = &the_index;
setup_unpack_trees_porcelain(&topts, "checkout");
refresh_cache(REFRESH_QUIET);
if (unmerged_cache()) {
error(_("you need to resolve your current index first"));
return 1;
}
/* 2-way merge to the new branch */
topts.initial_checkout = is_cache_unborn();
topts.update = 1;
topts.merge = 1;
topts.gently = opts->merge && old_branch_info->commit;
topts.verbose_update = opts->show_progress;
topts.fn = twoway_merge;
if (opts->overwrite_ignore) {
topts.dir = xcalloc(1, sizeof(*topts.dir));
topts.dir->flags |= DIR_SHOW_IGNORED;
setup_standard_excludes(topts.dir);
}
tree = parse_tree_indirect(old_branch_info->commit ?
&old_branch_info->commit->object.oid :
the_hash_algo->empty_tree);
init_tree_desc(&trees[0], tree->buffer, tree->size);
tree = parse_tree_indirect(&new_branch_info->commit->object.oid);
init_tree_desc(&trees[1], tree->buffer, tree->size);
ret = unpack_trees(2, trees, &topts);
clear_unpack_trees_porcelain(&topts);
if (ret == -1) {
/*
* Unpack couldn't do a trivial merge; either
* give up or do a real merge, depending on
* whether the merge flag was used.
*/
struct tree *result;
struct tree *work;
struct merge_options o;
if (!opts->merge)
return 1;
/*
* Without old_branch_info->commit, the below is the same as
* the two-tree unpack we already tried and failed.
*/
if (!old_branch_info->commit)
return 1;
/* Do more real merge */
/*
* We update the index fully, then write the
* tree from the index, then merge the new
* branch with the current tree, with the old
* branch as the base. Then we reset the index
* (but not the working tree) to the new
* branch, leaving the working tree as the
* merged version, but skipping unmerged
* entries in the index.
*/
add_files_to_cache(NULL, NULL, 0);
/*
* NEEDSWORK: carrying over local changes
* when branches have different end-of-line
* normalization (or clean+smudge rules) is
* a pain; plumb in an option to set
* o.renormalize?
*/
init_merge_options(&o);
o.verbosity = 0;
work = write_tree_from_memory(&o);
ret = reset_tree(get_commit_tree(new_branch_info->commit),
opts, 1,
writeout_error);
if (ret)
return ret;
o.ancestor = old_branch_info->name;
o.branch1 = new_branch_info->name;
o.branch2 = "local";
ret = merge_trees(&o,
get_commit_tree(new_branch_info->commit),
work,
get_commit_tree(old_branch_info->commit),
&result);
if (ret < 0)
exit(128);
ret = reset_tree(get_commit_tree(new_branch_info->commit),
opts, 0,
writeout_error);
strbuf_release(&o.obuf);
if (ret)
return ret;
}
}
if (!active_cache_tree)
active_cache_tree = cache_tree();
if (!cache_tree_fully_valid(active_cache_tree))
cache_tree_update(&the_index, WRITE_TREE_SILENT | WRITE_TREE_REPAIR);
if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
die(_("unable to write new index file"));
if (!opts->force && !opts->quiet)
show_local_changes(&new_branch_info->commit->object, &opts->diff_options);
return 0;
}
static void update_refs_for_switch(const struct checkout_opts *opts,
struct branch_info *old_branch_info,
struct branch_info *new_branch_info)
{
struct strbuf msg = STRBUF_INIT;
const char *old_desc, *reflog_msg;
if (opts->new_branch) {
if (opts->new_orphan_branch) {
char *refname;
refname = mkpathdup("refs/heads/%s", opts->new_orphan_branch);
if (opts->new_branch_log &&
!should_autocreate_reflog(refname)) {
int ret;
struct strbuf err = STRBUF_INIT;
ret = safe_create_reflog(refname, 1, &err);
if (ret) {
fprintf(stderr, _("Can not do reflog for '%s': %s\n"),
opts->new_orphan_branch, err.buf);
strbuf_release(&err);
free(refname);
return;
}
strbuf_release(&err);
}
free(refname);
}
else
create_branch(the_repository,
opts->new_branch, new_branch_info->name,
opts->new_branch_force ? 1 : 0,
opts->new_branch_force ? 1 : 0,
opts->new_branch_log,
opts->quiet,
opts->track);
new_branch_info->name = opts->new_branch;
setup_branch_path(new_branch_info);
}
old_desc = old_branch_info->name;
if (!old_desc && old_branch_info->commit)
old_desc = oid_to_hex(&old_branch_info->commit->object.oid);
reflog_msg = getenv("GIT_REFLOG_ACTION");
if (!reflog_msg)
strbuf_addf(&msg, "checkout: moving from %s to %s",
old_desc ? old_desc : "(invalid)", new_branch_info->name);
else
strbuf_insert(&msg, 0, reflog_msg, strlen(reflog_msg));
if (!strcmp(new_branch_info->name, "HEAD") && !new_branch_info->path && !opts->force_detach) {
/* Nothing to do. */
} else if (opts->force_detach || !new_branch_info->path) { /* No longer on any branch. */
update_ref(msg.buf, "HEAD", &new_branch_info->commit->object.oid, NULL,
REF_NO_DEREF, UPDATE_REFS_DIE_ON_ERR);
if (!opts->quiet) {
if (old_branch_info->path &&
advice_detached_head && !opts->force_detach)
detach_advice(new_branch_info->name);
describe_detached_head(_("HEAD is now at"), new_branch_info->commit);
}
} else if (new_branch_info->path) { /* Switch branches. */
if (create_symref("HEAD", new_branch_info->path, msg.buf) < 0)
die(_("unable to update HEAD"));
if (!opts->quiet) {
if (old_branch_info->path && !strcmp(new_branch_info->path, old_branch_info->path)) {
if (opts->new_branch_force)
fprintf(stderr, _("Reset branch '%s'\n"),
new_branch_info->name);
else
fprintf(stderr, _("Already on '%s'\n"),
new_branch_info->name);
} else if (opts->new_branch) {
if (opts->branch_exists)
fprintf(stderr, _("Switched to and reset branch '%s'\n"), new_branch_info->name);
else
fprintf(stderr, _("Switched to a new branch '%s'\n"), new_branch_info->name);
} else {
fprintf(stderr, _("Switched to branch '%s'\n"),
new_branch_info->name);
}
}
if (old_branch_info->path && old_branch_info->name) {
if (!ref_exists(old_branch_info->path) && reflog_exists(old_branch_info->path))
delete_reflog(old_branch_info->path);
}
}
remove_branch_state(the_repository);
strbuf_release(&msg);
if (!opts->quiet &&
(new_branch_info->path || (!opts->force_detach && !strcmp(new_branch_info->name, "HEAD"))))
report_tracking(new_branch_info);
}
static int checkout_paths(const struct checkout_opts *opts,
const char *revision)
{
int pos;
struct checkout state = CHECKOUT_INIT;
static char *ps_matched;
struct object_id rev;
struct commit *head;
int errs = 0;
struct lock_file lock_file = LOCK_INIT;
int nr_checkouts = 0;
if (opts->track != BRANCH_TRACK_UNSPECIFIED)
die(_("'%s' cannot be used with updating paths"), "--track");
if (opts->new_branch_log)
die(_("'%s' cannot be used with updating paths"), "-l");
if (opts->force && opts->patch_mode)
die(_("'%s' cannot be used with updating paths"), "-f");
if (opts->force_detach)
die(_("'%s' cannot be used with updating paths"), "--detach");
if (opts->merge && opts->patch_mode)
die(_("'%s' cannot be used with %s"), "--merge", "--patch");
if (opts->force && opts->merge)
die(_("'%s' cannot be used with %s"), "-f", "-m");
if (opts->new_branch)
die(_("Cannot update paths and switch to branch '%s' at the same time."),
opts->new_branch);
if (opts->patch_mode)
return run_add_interactive(revision, "--patch=checkout",
&opts->pathspec);
hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR);
if (read_cache_preload(&opts->pathspec) < 0)
return error(_("index file corrupt"));
if (opts->source_tree)
read_tree_some(opts->source_tree, &opts->pathspec);
ps_matched = xcalloc(opts->pathspec.nr, 1);
/*
* Make sure all pathspecs participated in locating the paths
* to be checked out.
*/
for (pos = 0; pos < active_nr; pos++) {
struct cache_entry *ce = active_cache[pos];
ce->ce_flags &= ~CE_MATCHED;
if (!opts->ignore_skipworktree && ce_skip_worktree(ce))
continue;
if (opts->source_tree && !(ce->ce_flags & CE_UPDATE))
/*
* "git checkout tree-ish -- path", but this entry
* is in the original index; it will not be checked
* out to the working tree and it does not matter
* if pathspec matched this entry. We will not do
* anything to this entry at all.
*/
continue;
/*
* Either this entry came from the tree-ish we are
* checking the paths out of, or we are checking out
* of the index.
*
* If it comes from the tree-ish, we already know it
* matches the pathspec and could just stamp
* CE_MATCHED to it from update_some(). But we still
* need ps_matched and read_tree_recursive (and
* eventually tree_entry_interesting) cannot fill
* ps_matched yet. Once it can, we can avoid calling
* match_pathspec() for _all_ entries when
* opts->source_tree != NULL.
*/
if (ce_path_match(&the_index, ce, &opts->pathspec, ps_matched))
ce->ce_flags |= CE_MATCHED;
}
if (report_path_error(ps_matched, &opts->pathspec, opts->prefix)) {
free(ps_matched);
return 1;
}
free(ps_matched);
/* "checkout -m path" to recreate conflicted state */
if (opts->merge)
unmerge_marked_index(&the_index);
/* Any unmerged paths? */
for (pos = 0; pos < active_nr; pos++) {
const struct cache_entry *ce = active_cache[pos];
if (ce->ce_flags & CE_MATCHED) {
if (!ce_stage(ce))
continue;
if (opts->force) {
warning(_("path '%s' is unmerged"), ce->name);
} else if (opts->writeout_stage) {
errs |= check_stage(opts->writeout_stage, ce, pos);
} else if (opts->merge) {
errs |= check_stages((1<<2) | (1<<3), ce, pos);
} else {
errs = 1;
error(_("path '%s' is unmerged"), ce->name);
}
pos = skip_same_name(ce, pos) - 1;
}
}
if (errs)
return 1;
/* Now we are committed to check them out */
state.force = 1;
state.refresh_cache = 1;
state.istate = &the_index;
enable_delayed_checkout(&state);
for (pos = 0; pos < active_nr; pos++) {
struct cache_entry *ce = active_cache[pos];
if (ce->ce_flags & CE_MATCHED) {
if (!ce_stage(ce)) {
errs |= checkout_entry(ce, &state,
NULL, &nr_checkouts);
continue;
}
if (opts->writeout_stage)
errs |= checkout_stage(opts->writeout_stage,
ce, pos,
&state, &nr_checkouts);
else if (opts->merge)
errs |= checkout_merged(pos, &state,
&nr_checkouts);
pos = skip_same_name(ce, pos) - 1;
}
}
errs |= finish_delayed_checkout(&state, &nr_checkouts);
if (opts->count_checkout_paths) {
if (opts->source_tree)
fprintf_ln(stderr, Q_("Checked out %d path out of %s",
"Checked out %d paths out of %s",
nr_checkouts),
nr_checkouts,
find_unique_abbrev(&opts->source_tree->object.oid,
DEFAULT_ABBREV));
else
fprintf_ln(stderr, Q_("Checked out %d path out of the index",
"Checked out %d paths out of the index",
nr_checkouts),
nr_checkouts);
}
if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
die(_("unable to write new index file"));
read_ref_full("HEAD", 0, &rev, NULL);
head = lookup_commit_reference_gently(the_repository, &rev, 1);
errs |= post_checkout_hook(head, head, 0);
return errs;
}
static int checkout_merged(int pos, const struct checkout *state, int *nr_checkouts)
{
struct cache_entry *ce = active_cache[pos];
const char *path = ce->name;
mmfile_t ancestor, ours, theirs;
int status;
struct object_id oid;
mmbuffer_t result_buf;
struct object_id threeway[3];
unsigned mode = 0;
memset(threeway, 0, sizeof(threeway));
while (pos < active_nr) {
int stage;
stage = ce_stage(ce);
if (!stage || strcmp(path, ce->name))
break;
oidcpy(&threeway[stage - 1], &ce->oid);
if (stage == 2)
mode = create_ce_mode(ce->ce_mode);
pos++;
ce = active_cache[pos];
}
if (is_null_oid(&threeway[1]) || is_null_oid(&threeway[2]))
return error(_("path '%s' does not have necessary versions"), path);
read_mmblob(&ancestor, &threeway[0]);
read_mmblob(&ours, &threeway[1]);
read_mmblob(&theirs, &threeway[2]);
/*
* NEEDSWORK: re-create conflicts from merges with
* merge.renormalize set, too
*/
status = ll_merge(&result_buf, path, &ancestor, "base",
&ours, "ours", &theirs, "theirs",
state->istate, NULL);
free(ancestor.ptr);
free(ours.ptr);
free(theirs.ptr);
if (status < 0 || !result_buf.ptr) {
free(result_buf.ptr);
return error(_("path '%s': cannot merge"), path);
}
/*
* NEEDSWORK:
* There is absolutely no reason to write this as a blob object
* and create a phony cache entry. This hack is primarily to get
* to the write_entry() machinery that massages the contents to
* work-tree format and writes out which only allows it for a
* cache entry. The code in write_entry() needs to be refactored
* to allow us to feed a <buffer, size, mode> instead of a cache
* entry. Such a refactoring would help merge_recursive as well
* (it also writes the merge result to the object database even
* when it may contain conflicts).
*/
if (write_object_file(result_buf.ptr, result_buf.size, blob_type, &oid))
die(_("Unable to add merge result for '%s'"), path);
free(result_buf.ptr);
ce = make_transient_cache_entry(mode, &oid, path, 2);
if (!ce)
die(_("make_cache_entry failed for path '%s'"), path);
status = checkout_entry(ce, state, NULL, nr_checkouts);
discard_cache_entry(ce);
return status;
}
int cmd_checkout(int argc, const char **argv, const char *prefix)
{
struct checkout_opts opts;
struct branch_info new_branch_info;
char *conflict_style = NULL;
int dwim_new_local_branch, no_dwim_new_local_branch = 0;
int dwim_remotes_matched = 0;
struct option options[] = {
OPT__QUIET(&opts.quiet, N_("suppress progress reporting")),
OPT_STRING('b', NULL, &opts.new_branch, N_("branch"),
N_("create and checkout a new branch")),
OPT_STRING('B', NULL, &opts.new_branch_force, N_("branch"),
N_("create/reset and checkout a branch")),
OPT_BOOL('l', NULL, &opts.new_branch_log, N_("create reflog for new branch")),
OPT_BOOL(0, "detach", &opts.force_detach, N_("detach HEAD at named commit")),
OPT_SET_INT('t', "track", &opts.track, N_("set upstream info for new branch"),
BRANCH_TRACK_EXPLICIT),
OPT_STRING(0, "orphan", &opts.new_orphan_branch, N_("new-branch"), N_("new unparented branch")),
OPT_SET_INT_F('2', "ours", &opts.writeout_stage,
N_("checkout our version for unmerged files"),
2, PARSE_OPT_NONEG),
OPT_SET_INT_F('3', "theirs", &opts.writeout_stage,
N_("checkout their version for unmerged files"),
3, PARSE_OPT_NONEG),
OPT__FORCE(&opts.force, N_("force checkout (throw away local modifications)"),
PARSE_OPT_NOCOMPLETE),
OPT_BOOL('m', "merge", &opts.merge, N_("perform a 3-way merge with the new branch")),
OPT_BOOL_F(0, "overwrite-ignore", &opts.overwrite_ignore,
N_("update ignored files (default)"),
PARSE_OPT_NOCOMPLETE),
OPT_STRING(0, "conflict", &conflict_style, N_("style"),
N_("conflict style (merge or diff3)")),
OPT_BOOL('p', "patch", &opts.patch_mode, N_("select hunks interactively")),
OPT_BOOL(0, "ignore-skip-worktree-bits", &opts.ignore_skipworktree,
N_("do not limit pathspecs to sparse entries only")),
OPT_BOOL(0, "no-guess", &no_dwim_new_local_branch,
N_("do not second guess 'git checkout <no-such-branch>'")),
OPT_BOOL(0, "ignore-other-worktrees", &opts.ignore_other_worktrees,
N_("do not check if another worktree is holding the given ref")),
{ OPTION_CALLBACK, 0, "recurse-submodules", NULL,
"checkout", "control recursive updating of submodules",
PARSE_OPT_OPTARG, option_parse_recurse_submodules_worktree_updater },
OPT_BOOL(0, "progress", &opts.show_progress, N_("force progress reporting")),
OPT_END(),
};
memset(&opts, 0, sizeof(opts));
memset(&new_branch_info, 0, sizeof(new_branch_info));
opts.overwrite_ignore = 1;
opts.prefix = prefix;
opts.show_progress = -1;
git_config(git_checkout_config, &opts);
opts.track = BRANCH_TRACK_UNSPECIFIED;
argc = parse_options(argc, argv, prefix, options, checkout_usage,
PARSE_OPT_KEEP_DASHDASH);
dwim_new_local_branch = !no_dwim_new_local_branch;
if (opts.show_progress < 0) {
if (opts.quiet)
opts.show_progress = 0;
else
opts.show_progress = isatty(2);
}
if (conflict_style) {
opts.merge = 1; /* implied */
git_xmerge_config("merge.conflictstyle", conflict_style, NULL);
}
if ((!!opts.new_branch + !!opts.new_branch_force + !!opts.new_orphan_branch) > 1)
die(_("-b, -B and --orphan are mutually exclusive"));
/*
* From here on, new_branch will contain the branch to be checked out,
* and new_branch_force and new_orphan_branch will tell us which one of
* -b/-B/--orphan is being used.
*/
if (opts.new_branch_force)
opts.new_branch = opts.new_branch_force;
if (opts.new_orphan_branch)
opts.new_branch = opts.new_orphan_branch;
/* --track without -b/-B/--orphan should DWIM */
if (opts.track != BRANCH_TRACK_UNSPECIFIED && !opts.new_branch) {
const char *argv0 = argv[0];
if (!argc || !strcmp(argv0, "--"))
die(_("--track needs a branch name"));
skip_prefix(argv0, "refs/", &argv0);
skip_prefix(argv0, "remotes/", &argv0);
argv0 = strchr(argv0, '/');
if (!argv0 || !argv0[1])
die(_("missing branch name; try -b"));
opts.new_branch = argv0 + 1;
}
/*
* Extract branch name from command line arguments, so
* all that is left is pathspecs.
*
* Handle
*
* 1) git checkout <tree> -- [<paths>]
* 2) git checkout -- [<paths>]
* 3) git checkout <something> [<paths>]
*
* including "last branch" syntax and DWIM-ery for names of
* remote branches, erroring out for invalid or ambiguous cases.
*/
if (argc) {
struct object_id rev;
int dwim_ok =
!opts.patch_mode &&
dwim_new_local_branch &&
opts.track == BRANCH_TRACK_UNSPECIFIED &&
!opts.new_branch;
int n = parse_branchname_arg(argc, argv, dwim_ok,
&new_branch_info, &opts, &rev,
&dwim_remotes_matched);
argv += n;
argc -= n;
}
if (argc) {
parse_pathspec(&opts.pathspec, 0,
opts.patch_mode ? PATHSPEC_PREFIX_ORIGIN : 0,
prefix, argv);
if (!opts.pathspec.nr)
die(_("invalid path specification"));
/*
* Try to give more helpful suggestion.
* new_branch && argc > 1 will be caught later.
*/
if (opts.new_branch && argc == 1)
die(_("'%s' is not a commit and a branch '%s' cannot be created from it"),
argv[0], opts.new_branch);
if (opts.force_detach)
die(_("git checkout: --detach does not take a path argument '%s'"),
argv[0]);
if (1 < !!opts.writeout_stage + !!opts.force + !!opts.merge)
die(_("git checkout: --ours/--theirs, --force and --merge are incompatible when\n"
"checking out of the index."));
}
if (opts.new_branch) {
struct strbuf buf = STRBUF_INIT;
if (opts.new_branch_force)
opts.branch_exists = validate_branchname(opts.new_branch, &buf);
else
opts.branch_exists =
validate_new_branchname(opts.new_branch, &buf, 0);
strbuf_release(&buf);
}
UNLEAK(opts);
if (opts.patch_mode || opts.pathspec.nr) {
int ret = checkout_paths(&opts, new_branch_info.name);
if (ret && dwim_remotes_matched > 1 &&
advice_checkout_ambiguous_remote_branch_name)
advise(_("'%s' matched more than one remote tracking branch.\n"
"We found %d remotes with a reference that matched. So we fell back\n"
"on trying to resolve the argument as a path, but failed there too!\n"
"\n"
"If you meant to check out a remote tracking branch on, e.g. 'origin',\n"
"you can do so by fully qualifying the name with the --track option:\n"
"\n"
" git checkout --track origin/<name>\n"
"\n"
"If you'd like to always have checkouts of an ambiguous <name> prefer\n"
"one remote, e.g. the 'origin' remote, consider setting\n"
"checkout.defaultRemote=origin in your config."),
argv[0],
dwim_remotes_matched);
return ret;
} else {
return checkout_branch(&opts, &new_branch_info);
}
}
static int parse_branchname_arg(int argc, const char **argv,
int dwim_new_local_branch_ok,
struct branch_info *new_branch_info,
struct checkout_opts *opts,
struct object_id *rev,
int *dwim_remotes_matched)
{
struct tree **source_tree = &opts->source_tree;
const char **new_branch = &opts->new_branch;
int argcount = 0;
struct object_id branch_rev;
const char *arg;
int dash_dash_pos;
int has_dash_dash = 0;
int i;
/*
* case 1: git checkout <ref> -- [<paths>]
*
* <ref> must be a valid tree, everything after the '--' must be
* a path.
*
* case 2: git checkout -- [<paths>]
*
* everything after the '--' must be paths.
*
* case 3: git checkout <something> [--]
*
* (a) If <something> is a commit, that is to
* switch to the branch or detach HEAD at it. As a special case,
* if <something> is A...B (missing A or B means HEAD but you can
* omit at most one side), and if there is a unique merge base
* between A and B, A...B names that merge base.
*
* (b) If <something> is _not_ a commit, either "--" is present
* or <something> is not a path, no -t or -b was given, and
* and there is a tracking branch whose name is <something>
* in one and only one remote (or if the branch exists on the
* remote named in checkout.defaultRemote), then this is a
* short-hand to fork local <something> from that
* remote-tracking branch.
*
* (c) Otherwise, if "--" is present, treat it like case (1).
*
* (d) Otherwise :
* - if it's a reference, treat it like case (1)
* - else if it's a path, treat it like case (2)
* - else: fail.
*
* case 4: git checkout <something> <paths>
*
* The first argument must not be ambiguous.
* - If it's *only* a reference, treat it like case (1).
* - If it's only a path, treat it like case (2).
* - else: fail.
*
*/
if (!argc)
return 0;
arg = argv[0];
dash_dash_pos = -1;
for (i = 0; i < argc; i++) {
if (!strcmp(argv[i], "--")) {
dash_dash_pos = i;
break;
}
}
if (dash_dash_pos == 0)
return 1; /* case (2) */
else if (dash_dash_pos == 1)
has_dash_dash = 1; /* case (3) or (1) */
else if (dash_dash_pos >= 2)
die(_("only one reference expected, %d given."), dash_dash_pos);
opts->count_checkout_paths = !opts->quiet && !has_dash_dash;
if (!strcmp(arg, "-"))
arg = "@{-1}";
if (get_oid_mb(arg, rev)) {
/*
* Either case (3) or (4), with <something> not being
* a commit, or an attempt to use case (1) with an
* invalid ref.
*
* It's likely an error, but we need to find out if
* we should auto-create the branch, case (3).(b).
*/
int recover_with_dwim = dwim_new_local_branch_ok;
int could_be_checkout_paths = !has_dash_dash &&
check_filename(opts->prefix, arg);
if (!has_dash_dash && !no_wildcard(arg))
recover_with_dwim = 0;
/*
* Accept "git checkout foo" and "git checkout foo --"
* as candidates for dwim.
*/
if (!(argc == 1 && !has_dash_dash) &&
!(argc == 2 && has_dash_dash))
recover_with_dwim = 0;
if (recover_with_dwim) {
const char *remote = unique_tracking_name(arg, rev,
dwim_remotes_matched);
if (remote) {
if (could_be_checkout_paths)
die(_("'%s' could be both a local file and a tracking branch.\n"
"Please use -- (and optionally --no-guess) to disambiguate"),
arg);
*new_branch = arg;
arg = remote;
/* DWIMmed to create local branch, case (3).(b) */
} else {
recover_with_dwim = 0;
}
}
if (!recover_with_dwim) {
if (has_dash_dash)
die(_("invalid reference: %s"), arg);
return argcount;
}
}
/* we can't end up being in (2) anymore, eat the argument */
argcount++;
argv++;
argc--;
new_branch_info->name = arg;
setup_branch_path(new_branch_info);
if (!check_refname_format(new_branch_info->path, 0) &&
!read_ref(new_branch_info->path, &branch_rev))
oidcpy(rev, &branch_rev);
else
new_branch_info->path = NULL; /* not an existing branch */
new_branch_info->commit = lookup_commit_reference_gently(the_repository, rev, 1);
if (!new_branch_info->commit) {
/* not a commit */
*source_tree = parse_tree_indirect(rev);
} else {
parse_commit_or_die(new_branch_info->commit);
*source_tree = get_commit_tree(new_branch_info->commit);
}
if (!*source_tree) /* case (1): want a tree */
die(_("reference is not a tree: %s"), arg);
if (!has_dash_dash) { /* case (3).(d) -> (1) */
/*
* Do not complain the most common case
* git checkout branch
* even if there happen to be a file called 'branch';
* it would be extremely annoying.
*/
if (argc)
verify_non_filename(opts->prefix, arg);
} else {
argcount++;
argv++;
argc--;
}
return argcount;
}
static void test(void)
{
mps_arena_t arena;
mps_pool_t poolamc, poolawl;
mps_thr_t thread;
mps_root_t root;
mps_fmt_t format;
mps_chain_t chain;
mps_ap_t apamc, apawl;
mycell *a, *b, *c, *d, *e, *f, *g;
int i;
int j;
RC;
fixcomments=1;
cdie(mps_arena_create(&arena, mps_arena_class_vm(), mmqaArenaSIZE),
"create arena");
die(mps_thread_reg(&thread, arena), "register thread");
die(mps_root_create_reg(&root, arena, MPS_RANK_AMBIG, 0, thread,
mps_stack_scan_ambig, stackpointer, 0),
"create root");
die(mps_fmt_create_A(&format, arena, &fmtA), "create format");
cdie(mps_chain_create(&chain, arena, genCOUNT, testChain), "chain_create");
die(mmqa_pool_create_chain(&poolamc, arena, mps_class_amc(), format, chain),
"create pool");
cdie(
mps_pool_create(&poolawl, arena, mps_class_awl(), format),
"create pool");
cdie(
mps_ap_create(&apawl, poolawl, MPS_RANK_WEAK),
"create ap");
cdie(
mps_ap_create(&apamc, poolamc, MPS_RANK_EXACT),
"create ap");
b = allocone(apamc, 1, 1);
for (j=1; j<10; j++) {
comment("%i of 10.", j);
UC;
a = allocone(apawl, 5, 1);
a->data.assoc = stackpointer;
setref(b, 0, a);
b = a;
c = a;
d = a;
e = a;
f = a;
g = a;
for (i=1; i<1000; i++) {
UC;
c = allocone(apamc, 10000, 1);
c = allocone(apawl, 10000, 1);
c->data.assoc = stackpointer;
if (ranint(8) == 0) d = c;
if (ranint(8) == 0) e = c;
if (ranint(8) == 0) f = c;
if (ranint(8) == 0) g = c;
UC;
setref(b, 0, c);
UC;
setref(c, 1, d);
UC;
setref(c, 2, e);
UC;
setref(c, 3, f);
UC;
setref(c, 4, g);
UC;
b = c;
}
DC;
DMC;
}
mps_ap_destroy(apawl);
mps_ap_destroy(apamc);
mps_pool_destroy(poolamc);
mps_pool_destroy(poolawl);
mps_chain_destroy(chain);
mps_fmt_destroy(format);
mps_root_destroy(root);
mps_thread_dereg(thread);
mps_arena_destroy(arena);
comment("Destroyed arena.");
}
