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-rw-r--r--stream/stream.c20
1 files changed, 0 insertions, 20 deletions
diff --git a/stream/stream.c b/stream/stream.c
index 1523a1017e..2e3127fcb3 100644
--- a/stream/stream.c
+++ b/stream/stream.c
@@ -405,25 +405,6 @@ eof_out:
return len;
}
-// This works like stdio's ungetc(), but for more than one byte. Rewind the
-// file position by buffer_size, and make all future reads/buffer fills read
-// from the given buffer, until the buffer is exhausted or a seek outside of
-// the buffer happens.
-// You can unread at most STREAM_MAX_BUFFER_SIZE bytes.
-void stream_unread_buffer(stream_t *s, void *buffer, size_t buffer_size)
-{
- assert(stream_tell(s) >= buffer_size); // can't unread to before file start
- assert(buffer_size <= STREAM_MAX_BUFFER_SIZE);
- // Need to include the remaining buffer to ensure no data is lost.
- int remainder = s->buf_len - s->buf_pos;
- // Successive buffer unreading might trigger this.
- assert(buffer_size + remainder <= TOTAL_BUFFER_SIZE);
- memmove(&s->buffer[buffer_size], &s->buffer[s->buf_pos], remainder);
- memcpy(s->buffer, buffer, buffer_size);
- s->buf_pos = 0;
- s->buf_len = buffer_size + remainder;
-}
-
int stream_fill_buffer(stream_t *s)
{
int len = stream_read_unbuffered(s, s->buffer, STREAM_BUFFER_SIZE);
@@ -475,7 +456,6 @@ struct bstr stream_peek(stream_t *s, int len)
{
assert(len >= 0);
assert(len <= STREAM_MAX_BUFFER_SIZE);
- // Logically like: stream_read(); stream_unread_buffer(); return buffer;
if (s->buf_len - s->buf_pos < len) {
// Move to front to guarantee we really can read up to max size.
int buf_valid = s->buf_len - s->buf_pos;