/**
* read
* reads data into a buffer
* @return number of bytes read
* @param buf buffer to read into
* @param off offset to start reading from
* @param len number of bytes to read
*/
boost::uint32_t hpiutil::sqshstream::read(boost::uint8_t *buf, const boost::uint32_t off, const boost::uint32_t len)
{
position = bitmin(off,fullsize);
if ((position >= fullsize)||!valid)
return 0;
boost::uint32_t reallen = bitmin(len,(fullsize-position));
for (int i = 0; i < reallen; i++)
buf[i] = data[position++];
return position - off;
}
/**
* read
* reads data into a buffer
* @return the number of bytes read
* @param buf buffer to read into
* @param off offset in substream to start reading from
* @param len size of data to read
*/
boost::uint32_t hpiutil::substream::read(boost::uint8_t *buf, const boost::uint32_t off, const boost::uint32_t len)
{
position = bitmin(off,length);
if (position >= length)
return 0;
boost::uint32_t reallen = bitmin(len,(length-position));
for (boost::uint32_t j = 0; j < reallen; j++)
buf[j] = data[position++];
return position-off;
}
/**
* read
* reads data into a buffer
* @return number of bytes read
* @param buf buffer to read into
*/
boost::uint32_t hpiutil::sqshstream::read(boost::uint8_t *buf)
{
if ((position >= fullsize)||!valid)
return 0;
boost::uint32_t oldpos = position;
boost::uint32_t len = bitmin(sizeof(buf),(fullsize-position));
for (int i = 0; i < len; i++)
buf[i] = data[position++];
return position - oldpos;
}
/**
* read
* reads data into a buffer
* @return the number of bytes read
* @param buf buffer to read into
*/
boost::uint32_t hpiutil::substream::read(boost::uint8_t *buf)
{
if (position >= length)
return 0;
boost::uint32_t oldpos = position;
boost::uint32_t len = bitmin(sizeof(buf),(length-position));
for (boost::uint32_t j = 0; j < len; j++)
buf[j] = data[position++];
return position - oldpos;
}