static ssize_t i_stream_qp_decoder_read(struct istream_private *stream)
{
struct qp_decoder_istream *bstream =
(struct qp_decoder_istream *)stream;
const unsigned char *data;
size_t pre_count, post_count, size;
int ret;
size_t prev_size = 0;
do {
ret = i_stream_read_parent(stream, &prev_size);
if (ret <= 0) {
if (ret != -1 || stream->istream.stream_errno != 0)
return 0;
ret = i_stream_qp_try_decode_input(bstream, TRUE);
if (ret == 0) {
/* ended with =[whitespace] but without LF */
stream->istream.eof = TRUE;
return -1;
}
/* partial qp input */
i_assert(ret < 0);
data = i_stream_get_data(stream->parent, &size);
io_stream_set_error(&stream->iostream,
"quoted-printable input ends with a partial block: 0x%s",
binary_to_hex(data, size));
stream->istream.stream_errno = EINVAL;
return -1;
}
/* encode as much data as fits into destination buffer */
pre_count = stream->pos - stream->skip;
while ((ret = i_stream_qp_try_decode_input(bstream, FALSE)) > 0) ;
post_count = stream->pos - stream->skip;
} while (ret == 0 && pre_count == post_count);
if (ret < 0)
return ret;
i_assert(post_count > pre_count);
return post_count - pre_count;
}
static ssize_t i_stream_qp_decoder_read(struct istream_private *stream)
{
struct qp_decoder_istream *bstream =
(struct qp_decoder_istream *)stream;
size_t pre_count, post_count;
int ret;
size_t prev_size = 0;
do {
ret = i_stream_read_parent(stream, &prev_size);
if (ret <= 0) {
if (ret != -1 || stream->istream.stream_errno != 0)
return 0;
ret = i_stream_qp_try_decode_input(bstream, TRUE);
if (ret == 0) {
/* ended with =[whitespace] but without LF */
stream->istream.eof = TRUE;
return -1;
}
/* partial qp input */
i_assert(ret < 0);
stream->istream.stream_errno = EINVAL;
return -1;
}
/* encode as much data as fits into destination buffer */
pre_count = stream->pos - stream->skip;
while ((ret = i_stream_qp_try_decode_input(bstream, FALSE)) > 0) ;
post_count = stream->pos - stream->skip;
} while (ret == 0 && pre_count == post_count);
if (ret < 0)
return ret;
i_assert(post_count > pre_count);
return post_count - pre_count;
}
