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merge-ort: implement unique_path() helper

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Implement unique_path(), based on the one from merge-recursive.c.  It is
simplified, however, due to: (1) using strmaps, and (2) the fact that
merge-ort lets the checkout codepath handle possible collisions with the
working tree means that other code locations don't have to.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Elijah Newren 2021-01-01 02:34:41 +00:00 committed by Junio C Hamano
parent 23366d2aa9
commit 5a1a1e8ea9
1 changed files with 24 additions and 1 deletions
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25
merge-ort.c
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@ -343,11 +343,34 @@ static void path_msg(struct merge_options *opt,
strbuf_addch(sb, '\n');
}
/* add a string to a strbuf, but converting "/" to "_" */
static void add_flattened_path(struct strbuf *out, const char *s)
{
size_t i = out->len;
strbuf_addstr(out, s);
for (; i < out->len; i++)
if (out->buf[i] == '/')
out->buf[i] = '_';
}
static char *unique_path(struct strmap *existing_paths,
const char *path,
const char *branch)
{
die("Not yet implemented.");
struct strbuf newpath = STRBUF_INIT;
int suffix = 0;
size_t base_len;
strbuf_addf(&newpath, "%s~", path);
add_flattened_path(&newpath, branch);
base_len = newpath.len;
while (strmap_contains(existing_paths, newpath.buf)) {
strbuf_setlen(&newpath, base_len);
strbuf_addf(&newpath, "_%d", suffix++);
}
return strbuf_detach(&newpath, NULL);
}
/*** Function Grouping: functions related to collect_merge_info() ***/