strbuf.c: add `strbuf_join_argv()`

Implement `strbuf_join_argv()` to join arguments
into a strbuf.

Signed-off-by: Paul-Sebastian Ungureanu <ungureanupaulsebastian@gmail.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/strbuf.c b/strbuf.c
index f6a6cf78b9..82e90f1dfe 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -268,6 +268,21 @@ void strbuf_addbuf(struct strbuf *sb, const struct strbuf *sb2)
 	strbuf_setlen(sb, sb->len + sb2->len);
 }
 
+const char *strbuf_join_argv(struct strbuf *buf,
+			     int argc, const char **argv, char delim)
+{
+	if (!argc)
+		return buf->buf;
+
+	strbuf_addstr(buf, *argv);
+	while (--argc) {
+		strbuf_addch(buf, delim);
+		strbuf_addstr(buf, *(++argv));
+	}
+
+	return buf->buf;
+}
+
 void strbuf_addchars(struct strbuf *sb, int c, size_t n)
 {
 	strbuf_grow(sb, n);