From: Teng Long <dyroneteng@xxxxxxxxx>
In preparation for actually implementing the '--pattern' option, we
add a new method called 'match_pattern' that uses regular expressions
to match 'ls-tree' entities.
Signed-off-by: Teng Long <dyroneteng@xxxxxxxxx>
---
builtin/ls-tree.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/builtin/ls-tree.c b/builtin/ls-tree.c
index 7661170f7ca..03dd3fbcb26 100644
--- a/builtin/ls-tree.c
+++ b/builtin/ls-tree.c
@@ -24,6 +24,7 @@ static struct pathspec pathspec;
static int chomp_prefix;
static const char *ls_tree_prefix;
static const char *format;
+static const char *pattern;
struct show_tree_data {
unsigned mode;
enum object_type type;
@@ -46,6 +47,32 @@ static enum ls_tree_cmdmode {
MODE_OBJECT_ONLY,
} cmdmode;
+__attribute__((unused))
+static int match_pattern(const char *line)
+{
+ int ret = 0;
+ regex_t r;
+ regmatch_t m[1];
+ char errbuf[64];
+
+ ret = regcomp(&r, pattern, 0);
+ if (ret) {
+ regerror(ret, &r, errbuf, sizeof(errbuf));
+ die("failed regcomp() for pattern '%s' (%s)", pattern, errbuf);
+ }
+ ret = regexec(&r, line, 1, m, 0);
+ if (ret) {
+ if (ret == REG_NOMATCH)
+ goto cleanup;
+ regerror(ret, &r, errbuf, sizeof(errbuf));
+ die("failed regexec() for subject '%s' (%s)", line, errbuf);
+ }
+
+cleanup:
+ regfree(&r);
+ return ret;
+}
+
static void expand_objectsize(struct strbuf *line, const struct object_id *oid,
const enum object_type type, unsigned int padded)
{
--
2.38.1.426.g770fc8806cb.dirty
