static ssize_t i_stream_base64_encoder_read(struct istream_private *stream)
{
struct base64_encoder_istream *bstream =
(struct base64_encoder_istream *)stream;
size_t pre_count, post_count, size;
int ret;
do {
ret = i_stream_read_parent(stream);
if (ret <= 0)
return ret;
(void)i_stream_get_data(stream->parent, &size);
} while (size < 4 && !stream->parent->eof);
/* encode as many lines as fits into destination buffer */
pre_count = stream->pos - stream->skip;
while (i_stream_base64_try_encode_line(bstream)) ;
post_count = stream->pos - stream->skip;
if (pre_count == post_count) {
i_assert(stream->buffer_size - stream->pos < 4);
return -2;
}
i_assert(post_count > pre_count);
return post_count - pre_count;
}
static ssize_t i_stream_base64_encoder_read(struct istream_private *stream)
{
struct base64_encoder_istream *bstream =
(struct base64_encoder_istream *)stream;
size_t pre_count, post_count;
int ret;
do {
ret = i_stream_read_parent(stream);
if (ret == 0)
return 0;
if (ret < 0) {
if (i_stream_get_data_size(stream->parent) == 0)
return -1;
/* add the final partial block */
}
/* encode as many lines as fits into destination buffer */
pre_count = stream->pos - stream->skip;
while ((ret = i_stream_base64_try_encode_line(bstream)) > 0) ;
post_count = stream->pos - stream->skip;
} while (ret == 0 && pre_count == post_count);
if (ret < 0 && pre_count == post_count)
return ret;
i_assert(post_count > pre_count);
return post_count - pre_count;
}
