int64_t scap_get_readfile_offset(scap_t* handle)
{
if(handle->m_file == NULL)
{
snprintf(handle->m_lasterr, SCAP_LASTERR_SIZE, "scap_readfile_pointer only works on trace files");
return -1;
}
return gzoffset(handle->m_file);
}
pos_type seekoff(off_type off, std::ios_base::seekdir way, std::ios_base::openmode which)
{
if (file && off == 0 && way == std::ios_base::cur && which == std::ios_base::out)
{
#if ZLIB_VERNUM >= 0x1240
// gzoffset is only available in zlib 1.2.4 or later
return pos_type(gzoffset(file));
#else
// return an approximation of file size (only used in progress dialog)
z_off_t offset = gztell(file);
if (offset > 0) offset /= 4;
return pos_type(offset);
#endif
}
return pos_type(off_type(-1));
}
