Commit f01de62e authored by Jonathan Nieder's avatar Jonathan Nieder Committed by Junio C Hamano

ll_merge(): add ancestor label parameter for diff3-style output

Commands using the ll_merge() function will present conflict hunks
imitating ‘diff3 -m’ output if the merge.conflictstyle configuration
option is set appropriately.  Unlike ‘diff3 -m’, the output does not
include a label for the merge base on the ||||||| line of the output,
and some tools misparse the conflict hunks without that.

Add a new ancestor_label parameter to ll_merge() to give callers the
power to rectify this situation.  If ancestor_label is NULL, the output
format is unchanged.  All callers pass NULL for now.
Requested-by: Stefan's avatarStefan Monnier <[email protected]>
Signed-off-by: default avatarJonathan Nieder <[email protected]>
Signed-off-by: default avatarJunio C Hamano <[email protected]>
parent 4bb09362
......@@ -149,7 +149,7 @@ static int checkout_merged(int pos, struct checkout *state)
read_mmblob(&ours, active_cache[pos+1]->sha1);
read_mmblob(&theirs, active_cache[pos+2]->sha1);
status = ll_merge(&result_buf, path, &ancestor,
status = ll_merge(&result_buf, path, &ancestor, NULL,
&ours, "ours", &theirs, "theirs", 0);
free(ancestor.ptr);
free(ours.ptr);
......
......@@ -15,7 +15,7 @@ struct ll_merge_driver;
typedef int (*ll_merge_fn)(const struct ll_merge_driver *,
mmbuffer_t *result,
const char *path,
mmfile_t *orig,
mmfile_t *orig, const char *orig_name,
mmfile_t *src1, const char *name1,
mmfile_t *src2, const char *name2,
int flag,
......@@ -36,7 +36,7 @@ struct ll_merge_driver {
static int ll_binary_merge(const struct ll_merge_driver *drv_unused,
mmbuffer_t *result,
const char *path_unused,
mmfile_t *orig,
mmfile_t *orig, const char *orig_name,
mmfile_t *src1, const char *name1,
mmfile_t *src2, const char *name2,
int flag, int marker_size)
......@@ -57,7 +57,7 @@ static int ll_binary_merge(const struct ll_merge_driver *drv_unused,
static int ll_xdl_merge(const struct ll_merge_driver *drv_unused,
mmbuffer_t *result,
const char *path,
mmfile_t *orig,
mmfile_t *orig, const char *orig_name,
mmfile_t *src1, const char *name1,
mmfile_t *src2, const char *name2,
int flag, int marker_size)
......@@ -71,7 +71,8 @@ static int ll_xdl_merge(const struct ll_merge_driver *drv_unused,
path, name1, name2);
return ll_binary_merge(drv_unused, result,
path,
orig, src1, name1,
orig, orig_name,
src1, name1,
src2, name2,
flag, marker_size);
}
......@@ -83,6 +84,7 @@ static int ll_xdl_merge(const struct ll_merge_driver *drv_unused,
xmp.style = git_xmerge_style;
if (marker_size > 0)
xmp.marker_size = marker_size;
xmp.ancestor = orig_name;
xmp.file1 = name1;
xmp.file2 = name2;
return xdl_merge(orig, src1, src2, &xmp, result);
......@@ -91,7 +93,7 @@ static int ll_xdl_merge(const struct ll_merge_driver *drv_unused,
static int ll_union_merge(const struct ll_merge_driver *drv_unused,
mmbuffer_t *result,
const char *path_unused,
mmfile_t *orig,
mmfile_t *orig, const char *orig_name,
mmfile_t *src1, const char *name1,
mmfile_t *src2, const char *name2,
int flag, int marker_size)
......@@ -99,7 +101,7 @@ static int ll_union_merge(const struct ll_merge_driver *drv_unused,
/* Use union favor */
flag = (flag & 1) | (XDL_MERGE_FAVOR_UNION << 1);
return ll_xdl_merge(drv_unused, result, path_unused,
orig, src1, NULL, src2, NULL,
orig, NULL, src1, NULL, src2, NULL,
flag, marker_size);
return 0;
}
......@@ -130,7 +132,7 @@ static void create_temp(mmfile_t *src, char *path)
static int ll_ext_merge(const struct ll_merge_driver *fn,
mmbuffer_t *result,
const char *path,
mmfile_t *orig,
mmfile_t *orig, const char *orig_name,
mmfile_t *src1, const char *name1,
mmfile_t *src2, const char *name2,
int flag, int marker_size)
......@@ -321,7 +323,7 @@ static int git_path_check_merge(const char *path, struct git_attr_check check[2]
int ll_merge(mmbuffer_t *result_buf,
const char *path,
mmfile_t *ancestor,
mmfile_t *ancestor, const char *ancestor_label,
mmfile_t *ours, const char *our_label,
mmfile_t *theirs, const char *their_label,
int flag)
......@@ -343,7 +345,7 @@ int ll_merge(mmbuffer_t *result_buf,
driver = find_ll_merge_driver(ll_driver_name);
if (virtual_ancestor && driver->recursive)
driver = find_ll_merge_driver(driver->recursive);
return driver->fn(driver, result_buf, path, ancestor,
return driver->fn(driver, result_buf, path, ancestor, ancestor_label,
ours, our_label, theirs, their_label,
flag, marker_size);
}
......
......@@ -7,7 +7,7 @@
int ll_merge(mmbuffer_t *result_buf,
const char *path,
mmfile_t *ancestor,
mmfile_t *ancestor, const char *ancestor_label,
mmfile_t *ours, const char *our_label,
mmfile_t *theirs, const char *their_label,
int flag);
......
......@@ -30,7 +30,7 @@ static void *three_way_filemerge(const char *path, mmfile_t *base, mmfile_t *our
int merge_status;
mmbuffer_t res;
merge_status = ll_merge(&res, path, base,
merge_status = ll_merge(&res, path, base, NULL,
our, ".our", their, ".their", 0);
if (merge_status < 0)
return NULL;
......
......@@ -640,7 +640,7 @@ static int merge_3way(struct merge_options *o,
read_mmblob(&src1, a->sha1);
read_mmblob(&src2, b->sha1);
merge_status = ll_merge(result_buf, a->path, &orig,
merge_status = ll_merge(result_buf, a->path, &orig, NULL,
&src1, name1, &src2, name2,
(!!o->call_depth) | (favor << 1));
......
......@@ -319,7 +319,7 @@ static int handle_cache(const char *path, unsigned char *sha1, const char *outpu
if (!mmfile[i].ptr && !mmfile[i].size)
mmfile[i].ptr = xstrdup("");
}
ll_merge(&result, path, &mmfile[0],
ll_merge(&result, path, &mmfile[0], NULL,
&mmfile[1], "ours",
&mmfile[2], "theirs", 0);
for (i = 0; i < 3; i++)
......@@ -376,7 +376,7 @@ static int merge(const char *name, const char *path)
ret = 1;
goto out;
}
ret = ll_merge(&result, path, &base, &cur, "", &other, "", 0);
ret = ll_merge(&result, path, &base, NULL, &cur, "", &other, "", 0);
if (!ret) {
FILE *f = fopen(path, "w");
if (!f)
......
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