vis

commit 69b2b5cdcd1b52d19243ff9160912bffe397341b
parent 93b304d3ac3cea20b45c75ad7d2efca4478dc41d
Author: Marc André Tanner <mat@brain-dump.org>
Date:   Sun,  3 Apr 2016 15:12:44 +0200

buffer: add buffer_content0 utility function

Diffstat:
M
buffer.c
 | 
6
++++++
M
buffer.h
 | 
3
+++

2 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/buffer.c b/buffer.c
@@ -103,3 +103,9 @@ size_t buffer_length(Buffer *buf) {
 const char *buffer_content(Buffer *buf) {
 	return buf->data;
 }
+
+const char *buffer_content0(Buffer *buf) {
+	if (buf->len == 0 || (buf->data[buf->len-1] != '\0' && !buffer_append(buf, "\0", 1)))
+		return "";
+	return buf->data;
+}
diff --git a/buffer.h b/buffer.h
@@ -42,6 +42,9 @@ bool buffer_prepend0(Buffer*, const char *data);
 size_t buffer_length0(Buffer*);
 /* return length of a buffer including possible NUL byte */
 size_t buffer_length(Buffer*);
+/* pointer to buffer data, guaranteed to return a NUL terminated
+ * string even if buffer is empty */
+const char *buffer_content0(Buffer*);
 /* pointer to buffer data, might be NULL if empty, might not be NUL terminated */
 const char *buffer_content(Buffer*);