size_t fvWrite()

in dmg/filevault.c [116:151]

• 33 lines of code
• 6 McCabe index (conditional complexity)

size_t fvWrite(AbstractFile* file, const void* data, size_t len) {
	FileVaultInfo* info;
	size_t toRead;
	int i;

	info = (FileVaultInfo*) (file->data);

	if(info->dataSize < (info->offset + len)) {
		if(info->version == 2) {
			info->header.v2.dataSize = info->offset + len;
		}
		info->headerDirty = TRUE;
	}

	if((CHUNKOFFSET(info->offset, info) + len) > info->blockSize) {
		toRead = info->blockSize - CHUNKOFFSET(info->offset, info);
		for(i = 0; i < toRead; i++) {
			ASSERT(*((char*)((uint8_t*)(&(info->chunk)) + (uint32_t)CHUNKOFFSET(info->offset, info) + i)) == ((char*)data)[i], "blah");
		}
		memcpy((void *)((uint8_t*)(&(info->chunk)) + (uint32_t)CHUNKOFFSET(info->offset, info)), data, toRead);
		info->dirty = TRUE;
		info->offset += toRead;
		cacheChunk(info, CHUNKNO(info->offset, info));
		return toRead + fvWrite(file, (void *)((uint8_t*)data + toRead), len - toRead);
	} else {
		toRead = len;
		for(i = 0; i < toRead; i++) {
			ASSERT(*((char*)((uint8_t*)(&(info->chunk)) + CHUNKOFFSET(info->offset, info) + i)) == ((char*)data)[i], "blah");
		}
		memcpy((void *)((uint8_t*)(&(info->chunk)) + CHUNKOFFSET(info->offset, info)), data, toRead);
		info->dirty = TRUE;
		info->offset += toRead;
		cacheChunk(info, CHUNKNO(info->offset, info));
		return toRead;
	}
}