static int dmgFileRead()

in dmg/dmgfile.c [80:112]

• 26 lines of code
• 7 McCabe index (conditional complexity)

static int dmgFileRead(io_func* io, off_t location, size_t size, void *buffer) {
	DMG* dmg;
	size_t toRead;

	dmg = (DMG*) io->data;

	location += dmg->offset;

	if(size == 0) {
		return TRUE;
	}

	if(dmg->runType == BLOCK_TERMINATOR || location < dmg->runStart || location >= dmg->runEnd) {
		cacheOffset(dmg, location);
	}

	if((location + size) > dmg->runEnd) {
		toRead = dmg->runEnd - location;
	} else {
		toRead = size;
	}

	memcpy(buffer, (void*)((uint8_t*)dmg->runData + (uint32_t)(location - dmg->runStart)), toRead);
	size -= toRead;
	location += toRead;
	buffer = (void*)((uint8_t*)buffer + toRead);

	if(size > 0) {
		return dmgFileRead(io, location - dmg->offset, size, buffer);
	} else {
		return TRUE;
	}
}