Stringp FileClass::read(Stringp filename)
{
Toplevel* toplevel = this->toplevel();
AvmCore* core = this->core();
if (!filename) {
toplevel->throwArgumentError(kNullArgumentError, "filename");
}
StUTF8String filenameUTF8(filename);
File* fp = Platform::GetInstance()->createFile();
if(!fp || !fp->open(filenameUTF8.c_str(), File::OPEN_READ))
{
if(fp)
{
Platform::GetInstance()->destroyFile(fp);
}
toplevel->throwError(kFileOpenError, filename);
}
int64_t fileSize = fp->size();
if(fileSize >= (int64_t)INT32_T_MAX) //File APIs cannot handle files > 2GB
{
toplevel->throwRangeError(kOutOfRangeError, filename);
}
int len = (int)fileSize;
MMgc::GC::AllocaAutoPtr _c;
union {
uint8_t* c;
wchar* c_w;
};
c = (uint8_t*)VMPI_alloca(core, _c, len+1);
len = (int)fp->read(c, len); //need to force since the string creation functions expect an int
c[len] = 0;
fp->close();
Platform::GetInstance()->destroyFile(fp);
if (len >= 3)
{
// UTF8 BOM
if ((c[0] == 0xef) && (c[1] == 0xbb) && (c[2] == 0xbf))
{
return core->newStringUTF8((const char*)c + 3, len - 3);
}
else if ((c[0] == 0xfe) && (c[1] == 0xff))
{
//UTF-16 big endian
c += 2;
len = (len - 2) >> 1;
return core->newStringEndianUTF16(/*littleEndian*/false, c_w, len);
}
else if ((c[0] == 0xff) && (c[1] == 0xfe))
Stringp FileClass::read(Stringp filename)
{
Toplevel* toplevel = this->toplevel();
AvmCore* core = this->core();
if (!filename) {
toplevel->throwArgumentError(kNullArgumentError, "filename");
}
StUTF8String filenameUTF8(filename);
File* fp = Platform::GetInstance()->createFile();
if(!fp || !fp->open(filenameUTF8.c_str(), File::OPEN_READ))
{
if(fp)
{
Platform::GetInstance()->destroyFile(fp);
}
toplevel->throwError(kFileOpenError, filename);
}
int64_t fileSize = fp->size();
if(fileSize >= (int64_t)INT32_T_MAX) //File APIs cannot handle files > 2GB
{
toplevel->throwRangeError(kOutOfRangeError, filename);
}
int len = (int)fileSize;
// Avoid VMPI_alloca - the buffer can be large and the memory is non-pointer-containing,
// but the GC will scan it conservatively.
uint8_t* c = (uint8_t*)core->gc->Alloc(len+1);
len = (int)fp->read(c, len); //need to force since the string creation functions expect an int
c[len] = 0;
fp->close();
Platform::GetInstance()->destroyFile(fp);
Stringp ret = NULL;
if (len >= 3)
{
// UTF8 BOM
if ((c[0] == 0xef) && (c[1] == 0xbb) && (c[2] == 0xbf))
{
ret = core->newStringUTF8((const char*)c + 3, len - 3);
}
else if ((c[0] == 0xfe) && (c[1] == 0xff))
{
//UTF-16 big endian
c += 2;
len = (len - 2) >> 1;
ret = core->newStringEndianUTF16(/*littleEndian*/false, (wchar*)(void*)c, len);
}
else if ((c[0] == 0xff) && (c[1] == 0xfe))