void writeToHFSFile()

in hfs/hfslib.c [80:134]
48 lines of code
10 McCabe index (conditional complexity)

void writeToHFSFile(HFSPlusCatalogFile* file, AbstractFile* input, Volume* volume) {
	unsigned char *buffer;
	io_func* io;
	off_t curPosition;
	off_t bytesLeft;

	buffer = (unsigned char*) malloc(BUFSIZE);
	
	bytesLeft = input->getLength(input);

	if(file->permissions.ownerFlags & UF_COMPRESSED) {
		io = openHFSPlusCompressed(volume, file);
		if(io == NULL) {
			hfs_panic("error opening file");
			free(buffer);
			return;
		}
	} else {
		io = openRawFile(file->fileID, &file->dataFork, (HFSPlusCatalogRecord*)file, volume);
		if(io == NULL) {
			hfs_panic("error opening file");
			free(buffer);
			return;
		}
		allocate((RawFile*)io->data, bytesLeft);
	}
	
	curPosition = 0;	
	
	while(bytesLeft > 0) {
		if(bytesLeft > BUFSIZE) {
			if(input->read(input, buffer, BUFSIZE) != BUFSIZE) {
				hfs_panic("error reading");
			}
			if(!WRITE(io, curPosition, BUFSIZE, buffer)) {
				hfs_panic("error writing");
			}
			curPosition += BUFSIZE;
			bytesLeft -= BUFSIZE;
		} else {
			if(input->read(input, buffer, (size_t)bytesLeft) != (size_t)bytesLeft) {
				hfs_panic("error reading");
			}
			if(!WRITE(io, curPosition, (size_t)bytesLeft, buffer)) {
				hfs_panic("error reading");
			}
			curPosition += bytesLeft;
			bytesLeft -= bytesLeft;
		}
	}

	CLOSE(io);

	free(buffer);
}