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git merge -X<option>

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Teach "-X <option>" command line argument to "git merge" that is passed to
strategy implementations.  "ours" and "theirs" autoresolution introduced
by the previous commit can be asked to the recursive strategy.

Signed-off-by: Avery Pennarun <apenwarr@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Avery Pennarun
2009-11-25 21:23:55 -05:00
committed by Junio C Hamano
parent 73eb40eeaa
commit 8cc5b29065
11 changed files with 162 additions and 26 deletions
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40
builtin-merge.c
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@ -50,6 +50,8 @@ static struct commit_list *remoteheads;
static unsigned char head[20], stash[20];
static struct strategy **use_strategies;
static size_t use_strategies_nr, use_strategies_alloc;
static const char **xopts;
static size_t xopts_nr, xopts_alloc;
static const char *branch;
static int verbosity;
@ -146,6 +148,17 @@ static int option_parse_strategy(const struct option *opt,
return 0;
}
static int option_parse_x(const struct option *opt,
const char *arg, int unset)
{
if (unset)
return 0;
ALLOC_GROW(xopts, xopts_nr + 1, xopts_alloc);
xopts[xopts_nr++] = xstrdup(arg);
return 0;
}
static int option_parse_n(const struct option *opt,
const char *arg, int unset)
{
@ -172,6 +185,8 @@ static struct option builtin_merge_options[] = {
"abort if fast-forward is not possible"),
OPT_CALLBACK('s', "strategy", &use_strategies, "strategy",
"merge strategy to use", option_parse_strategy),
OPT_CALLBACK('X', "strategy-option", &xopts, "option=value",
"option for selected merge strategy", option_parse_x),
OPT_CALLBACK('m', "message", &merge_msg, "message",
"message to be used for the merge commit (if any)",
option_parse_message),
@ -534,7 +549,7 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
const char *head_arg)
{
const char **args;
int i = 0, ret;
int i = 0, x = 0, ret;
struct commit_list *j;
struct strbuf buf = STRBUF_INIT;
int index_fd;
@ -563,7 +578,18 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
init_merge_options(&o);
if (!strcmp(strategy, "subtree"))
o.subtree_merge = 1;
o.recursive_variant = MERGE_RECURSIVE_SUBTREE;
for (x = 0; x < xopts_nr; x++) {
if (!strcmp(xopts[x], "ours"))
o.recursive_variant = MERGE_RECURSIVE_OURS;
else if (!strcmp(xopts[x], "theirs"))
o.recursive_variant = MERGE_RECURSIVE_THEIRS;
else if (!strcmp(xopts[x], "subtree"))
o.recursive_variant = MERGE_RECURSIVE_SUBTREE;
else
die("Unknown option for merge-recursive: -X%s", xopts[x]);
}
o.branch1 = head_arg;
o.branch2 = remoteheads->item->util;
@ -581,10 +607,16 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
rollback_lock_file(lock);
return clean ? 0 : 1;
} else {
args = xmalloc((4 + commit_list_count(common) +
args = xmalloc((4 + xopts_nr + commit_list_count(common) +
commit_list_count(remoteheads)) * sizeof(char *));
strbuf_addf(&buf, "merge-%s", strategy);
args[i++] = buf.buf;
for (x = 0; x < xopts_nr; x++) {
char *s = xmalloc(strlen(xopts[x])+2+1);
strcpy(s, "--");
strcpy(s+2, xopts[x]);
args[i++] = s;
}
for (j = common; j; j = j->next)
args[i++] = xstrdup(sha1_to_hex(j->item->object.sha1));
args[i++] = "--";
@ -595,6 +627,8 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common,
ret = run_command_v_opt(args, RUN_GIT_CMD);
strbuf_release(&buf);
i = 1;
for (x = 0; x < xopts_nr; x++)
free((void *)args[i++]);
for (j = common; j; j = j->next)
free((void *)args[i++]);
i += 2;