void open(service_ptr_t<file> p_filehint, const char *p_path, t_input_open_reason p_reason, abort_callback &p_abort)
{
if (p_reason == input_open_info_write) {
int len = strlen(p_path);
if (len < 4 || _stricmp(p_path + len - 4, ".sap") != 0)
throw exception_io_unsupported_format();
filename = strdup(p_path);
}
if (p_filehint.is_empty())
filesystem::g_open(p_filehint, p_path, filesystem::open_mode_read, p_abort);
m_file = p_filehint;
module_len = m_file->read(module, sizeof(module), p_abort);
if (!ASAP_Load(asap, p_path, module, module_len))
throw exception_io_unsupported_format();
}
void open(service_ptr_t<file> p_filehint, const char *p_path, t_input_open_reason p_reason, abort_callback &p_abort)
{
if (p_reason == input_open_info_write) {
int len = strlen(p_path);
if (len >= MAX_PATH || !ASAP_CanSetModuleInfo(p_path))
throw exception_io_unsupported_format();
memcpy(filename, p_path, len + 1);
}
if (p_filehint.is_empty())
filesystem::g_open(p_filehint, p_path, filesystem::open_mode_read, p_abort);
m_file = p_filehint;
module_len = m_file->read(module, sizeof(module), p_abort);
if (!ASAP_GetModuleInfo(&module_info, p_path, module, module_len))
throw exception_io_unsupported_format();
if (p_reason == input_open_decode)
if (!ASAP_Load(&asap, p_path, module, module_len))
throw exception_io_unsupported_format();
}
void tag_processor_id3v2::g_skip_at(const service_ptr_t<file> & p_file,t_filesize p_base, t_filesize & p_size_skipped,abort_callback & p_abort) {
unsigned char tmp[10];
p_file->seek ( p_base, p_abort );
if (p_file->read( tmp, sizeof(tmp), p_abort) != sizeof(tmp)) {
p_file->seek ( p_base, p_abort );
p_size_skipped = 0;
return;
}
if (
0 != memcmp ( tmp, "ID3", 3) ||
( tmp[5] & 0x0F ) != 0 ||
((tmp[6] | tmp[7] | tmp[8] | tmp[9]) & 0x80) != 0
) {
p_file->seek ( p_base, p_abort );
p_size_skipped = 0;
return;
}
int FooterPresent = tmp[5] & 0x10;
t_uint32 ret;
ret = tmp[6] << 21;
ret += tmp[7] << 14;
ret += tmp[8] << 7;
ret += tmp[9] ;
ret += 10;
if ( FooterPresent ) ret += 10;
try {
p_file->seek ( p_base + ret, p_abort );
} catch(exception_io_seek_out_of_range) {
p_file->seek( p_base, p_abort );
p_size_skipped = 0;
return;
}
p_size_skipped = ret;
}
void read_v2(const service_ptr_t<file> & p_file,abort_callback & p_abort,pfc::string_base & p_out,bool & is_utf8, bool forceUTF8) {
p_out.reset();
p_file->reopen( p_abort );
pfc::array_t<char> mem;
t_filesize size64;
size64 = p_file->get_size(p_abort);
if (size64 == filesize_invalid)//typically HTTP
{
pfc::string8 ansitemp;
t_size done;
enum { delta = 1024 * 64, max = 1024 * 512 };
if ( forceUTF8 ) {
is_utf8 = true;
} else {
is_utf8 = false;
char temp[3];
done = p_file->read(temp, 3, p_abort);
if (done != 3)
{
if (done > 0) p_out = pfc::stringcvt::string_utf8_from_ansi(temp, done);
return;
}
if (!memcmp(utf8_header, temp, 3)) is_utf8 = true;
else ansitemp.add_string(temp, 3);
}
mem.set_size(delta);
for(;;)
{
done = p_file->read(mem.get_ptr(),delta,p_abort);
if (done > 0)
{
if (is_utf8) p_out.add_string(mem.get_ptr(),done);
else ansitemp.add_string(mem.get_ptr(),done);
}
if (done < delta) break;
}
if (!is_utf8)
{
p_out = pfc::stringcvt::string_utf8_from_ansi(ansitemp);
}
return;
}
else
{
if (size64>1024*1024*128) throw exception_io_data();//hard limit
t_size size = pfc::downcast_guarded<t_size>(size64);
mem.set_size(size+1);
char * asdf = mem.get_ptr();
p_file->read_object(asdf,size,p_abort);
asdf[size]=0;
if ( forceUTF8 ) {
is_utf8 = true;
p_out = asdf;
} else if (size>3 && !memcmp(utf8_header,asdf,3)) {
is_utf8 = true;
p_out.add_string(asdf+3);
} else {
is_utf8 = false;
p_out = pfc::stringcvt::string_utf8_from_ansi(asdf);
}
return;
}
}