static int IsImage(char *name) {
int magic;
int byteSwapped(int);
sqImageFile fp;
fp = sqImageFileOpen(name,"rb");
if(!fp) return 0; /* not an image */
if(sqImageFileRead(&magic, 1, sizeof(magic), fp) != sizeof(magic)) {
sqImageFileClose(fp);
return 0;
}
if(readableFormat(magic) || readableFormat(byteSwapped(magic))) {
sqImageFileClose(fp);
return true;
}
/* no luck at beginning of file, seek to 512 and try again */
sqImageFileSeek( fp, 512);
if(sqImageFileRead(&magic, 1, sizeof(magic), fp) != sizeof(magic)) {
sqImageFileClose(fp);
return 0;
}
sqImageFileClose(fp);
return readableFormat(magic) || readableFormat(byteSwapped(magic));
}
int
Java_org_squeak_android_SqueakVM_loadImageHeap(JNIEnv *env, jobject self,
jstring imageName,
int heapSize) {
if(longAt(sqMemory) < 0xFFFF) {
sqHeaderSize = longAt(sqMemory+4);
} else {
sqHeaderSize = byteSwapped(longAt(sqMemory+4));
}
initTimer();
aioInit();
dprintf(4, "loadImageHeap: headerSize = %d\n", sqHeaderSize);
readImageFromFileHeapSizeStartingAt(0, heapSize-sqHeaderSize, 0);
prepareActiveProcess();
return 0;
}
