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-rw-r--r--pb_decode.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/pb_decode.c b/pb_decode.c
index 9faceca2..b664fe14 100644
--- a/pb_decode.c
+++ b/pb_decode.c
@@ -52,6 +52,7 @@ static bool checkreturn buf_read(pb_istream_t *stream, uint8_t *buf, size_t coun
bool checkreturn pb_read(pb_istream_t *stream, uint8_t *buf, size_t count)
{
+#ifndef PB_BUFFER_ONLY
if (buf == NULL && stream->callback != buf_read)
{
/* Skip input bytes */
@@ -66,12 +67,18 @@ bool checkreturn pb_read(pb_istream_t *stream, uint8_t *buf, size_t count)
return pb_read(stream, tmp, count);
}
+#endif
if (stream->bytes_left < count)
PB_RETURN_ERROR(stream, "end-of-stream");
+#ifndef PB_BUFFER_ONLY
if (!stream->callback(stream, buf, count))
PB_RETURN_ERROR(stream, "io error");
+#else
+ if (!buf_read(stream, buf, count))
+ return false;
+#endif
stream->bytes_left -= count;
return true;
@@ -80,7 +87,11 @@ bool checkreturn pb_read(pb_istream_t *stream, uint8_t *buf, size_t count)
pb_istream_t pb_istream_from_buffer(uint8_t *buf, size_t bufsize)
{
pb_istream_t stream;
+#ifdef PB_BUFFER_ONLY
+ stream.callback = NULL;
+#else
stream.callback = &buf_read;
+#endif
stream.state = buf;
stream.bytes_left = bufsize;
#ifndef PB_NO_ERRMSG