[FFmpeg-devel] [PATCH 1/2] lavu/bprint: add av_bprint_reset().

[Clément Bœsch]

FIXME: lavu minor bump.
---
 libavutil/bprint.c |    8 ++++++++
 libavutil/bprint.h |    5 +++++
 2 files changed, 13 insertions(+)

diff --git a/libavutil/bprint.c b/libavutil/bprint.c
index 08383b2..3338588 100644
--- a/libavutil/bprint.c
+++ b/libavutil/bprint.c
@@ -119,6 +119,14 @@ void av_bprint_chars(AVBPrint *buf, char c, unsigned n)
     av_bprint_grow(buf, n);
 }
 
+void av_bprint_reset(AVBPrint *buf)
+{
+    if (buf->len) {
+        *buf->str = 0;
+        buf->len  = 0;
+    }
+}
+
 int av_bprint_finalize(AVBPrint *buf, char **ret_str)
 {
     unsigned real_size = FFMIN(buf->len + 1, buf->size);
diff --git a/libavutil/bprint.h b/libavutil/bprint.h
index c5d750d..d1a7d96 100644
--- a/libavutil/bprint.h
+++ b/libavutil/bprint.h
@@ -110,6 +110,11 @@ void av_bprintf(AVBPrint *buf, const char *fmt, ...) av_printf_format(2, 3);
 void av_bprint_chars(AVBPrint *buf, char c, unsigned n);
 
 /**
+ * Reset the string to "" but keep internal allocated data.
+ */
+void av_bprint_reset(AVBPrint *buf);
+
+/**
  * Test if the print buffer is complete (not truncated).
  *
  * It may have been truncated due to a memory allocation failure
-- 
1.7.10.1