[PATCH v3 12/17] strbuf: add strbuf_replace()

[Christian Couder <chriscool@tuxfamily.org>]

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
---
 strbuf.c | 7 +++++++
 strbuf.h | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/strbuf.c b/strbuf.c
index 2124bb8..e45e513 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -197,6 +197,13 @@ void strbuf_splice(struct strbuf *sb, size_t pos, size_t len,
 	strbuf_setlen(sb, sb->len + dlen - len);
 }
 
+void strbuf_replace(struct strbuf *sb, const char *a, const char *b)
+{
+	char *ptr = strstr(sb->buf, a);
+	if (ptr)
+		strbuf_splice(sb, ptr - sb->buf, strlen(a), b, strlen(b));
+}
+
 void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len)
 {
 	strbuf_splice(sb, pos, 0, data, len);
diff --git a/strbuf.h b/strbuf.h
index 02bff3a..38faf70 100644
--- a/strbuf.h
+++ b/strbuf.h
@@ -111,6 +111,9 @@ extern void strbuf_remove(struct strbuf *, size_t pos, size_t len);
 extern void strbuf_splice(struct strbuf *, size_t pos, size_t len,
                           const void *, size_t);
 
+/* first occurence of a replaced with b */
+extern void strbuf_replace(struct strbuf *, const char *a, const char *b);
+
 extern void strbuf_add_commented_lines(struct strbuf *out, const char *buf, size_t size);
 
 extern void strbuf_add(struct strbuf *, const void *, size_t);
-- 
1.8.5.2.201.gacc5987