Function LoadFM2

src/movie.cpp:646–761

yuck... another custom text parser.

//yuck... another custom text parser.
bool LoadFM2(MovieData& movieData, EMUFILE* fp, int size, bool stopAfterHeader)
{
	// if there's no "binary" tag in the movie header, consider it as a movie in text format
	movieData.binaryFlag = false;
	// Non-TASEditor projects consume until EOF
	movieData.loadFrameCount = -1;

	std::ios::pos_type curr = fp->ftell();

	if (!stopAfterHeader)
	{
		// first, look for an fcm signature
		char fcmbuf[3];
		fp->fread(fcmbuf,3);
		fp->fseek(curr,SEEK_SET);
		if(!strncmp(fcmbuf,"FCM",3)) {
			FCEU_PrintError("FCM File format is no longer supported. Please use Tools > Convert FCM");
			return false;
		}
	}

	//movie must start with "version 3"
	char buf[9];
	curr = fp->ftell();
	fp->fread(buf,9);
	fp->fseek(curr,SEEK_SET);
	if(fp->fail()) return false;
	if(memcmp(buf,"version 3",9))
		return false;

	std::string key,value;
	enum {
		NEWLINE, KEY, SEPARATOR, VALUE, RECORD, COMMENT, SUBTITLE
	} state = NEWLINE;
	bool bail = false;
	bool iswhitespace, isrecchar, isnewline;
	int c;
	for(;;)
	{
		if(size--<=0) goto bail;
		c = fp->fgetc();
		if(c == -1)
			goto bail;
		iswhitespace = (c==' '||c=='\t');
		isrecchar = (c=='|');
		isnewline = (c==10||c==13);
		if(isrecchar && movieData.binaryFlag && !stopAfterHeader)
		{
			LoadFM2_binarychunk(movieData, fp, size);
			return true;
		} else if (isnewline && static_cast<size_t>(movieData.loadFrameCount) == movieData.records.size())
			// exit prematurely if loaded the specified amound of records
			return true;
		switch(state)
		{
		case NEWLINE:
			if(isnewline) goto done;
			if(iswhitespace) goto done;