/**	 * Method to find the ".sw" file and read DC data.	 * @param sd the Stimuli to add this DC data to.	 * @param fileURL the URL to the ".tr" file.	 * @throws IOException	 */	private void addDCData(Stimuli sd, List<PALine> paList, URL fileURL)		throws IOException	{		// find the associated ".sw" name file		URL swURL = null;		try		{			swURL = new URL(fileURL.getProtocol(), fileURL.getHost(), fileURL.getPort(), fileBase + "." + swExtension);		} catch (java.net.MalformedURLException e) {}		if (swURL != null && TextUtils.URLExists(swURL))		{			// process the DC data			readTRDCACFile(sd, swURL, paList, Analysis.ANALYSIS_DC);			return;		}		// no associated ".sw" file, look for an ".ic" name file		URL icURL = null;		try		{			icURL = new URL(fileURL.getProtocol(), fileURL.getHost(), fileURL.getPort(), fileBase + "." + icExtension);		} catch (java.net.MalformedURLException e) {}		if (icURL != null && TextUtils.URLExists(icURL))		{			// can't process the DC data			System.out.println("WARNING: Cannot read old DC format file (." + icExtension +				")...must provide new format (." + swExtension + "): " + fileBase + "." + icExtension);			return;		}	}	/**	 * Method to find the ".ac" file and read AC data.	 * @param sd the Stimuli to add this AC data to.	 * @param fileURL the URL to the ".tr" file.	 * @throws IOException	 */	private void addACData(Stimuli sd, List<PALine> paList, URL fileURL)		throws IOException	{		// find the associated ".ac" name file		URL acURL = null;		try		{			acURL = new URL(fileURL.getProtocol(), fileURL.getHost(), fileURL.getPort(), fileBase + "." + acExtension);		} catch (java.net.MalformedURLException e) {}		if (acURL == null) return;		if (!TextUtils.URLExists(acURL)) return;		// process the AC data		readTRDCACFile(sd, acURL, paList, Analysis.ANALYSIS_AC);	}	/**	 * Method to read the "pa" file with full symbol names.	 * These files can end in "0", "1", "2",...	 * @param fileURL the URL to the simulation output file	 * @return a list of PALine objects that describe the name mapping file entries.	 */	private List<PALine> readPAFile(URL fileURL)		throws IOException	{		// find the associated ".pa" name file		URL paURL = null;		try		{			paURL = new URL(fileURL.getProtocol(), fileURL.getHost(), fileURL.getPort(), fileBase + "." + paExtension);		} catch (java.net.MalformedURLException e) {}		if (paURL == null) return null;		if (!TextUtils.URLExists(paURL)) return null;		if (openTextInput(paURL)) return null;		List<PALine> paList = new ArrayList<PALine>();		for(;;)		{			// get line from file			String nextLine = lineReader.readLine();			if (nextLine == null) break;			// break into number and name			String trimLine = nextLine.trim();			int spacePos = trimLine.indexOf(' ');			if (spacePos > 0)			{				// save it in a PALine object				PALine pl = new PALine();				pl.number = TextUtils.atoi(trimLine, 0, 10);				pl.string = removeLeadingX(trimLine.substring(spacePos+1).trim());				paList.add(pl);			}		}		closeInput();		return paList;	}	private void readTRDCACFile(Stimuli sd, URL fileURL, List<PALine> paList, Analysis.AnalysisType analysisType)		throws IOException	{		if (openBinaryInput(fileURL)) return;		eofReached = false;		resetBinaryTRACDCReader();		SweepAnalysis an = new SweepAnalysis(sd, analysisType);		startProgressDialog("HSpice " + analysisType.toString() + " analysis", fileURL.getFile());		System.out.println("Reading HSpice " + analysisType.toString() + " analysis '" + fileURL.getFile() + "'");		// get number of nodes		int nodcnt = getHSpiceInt();		// get number of special items		int numnoi = getHSpiceInt();		// get number of conditions		int cndcnt = getHSpiceInt();		/*		 * Although this isn't documented anywhere, it appears that the 4th		 * number in the file is a multiplier for the first, which allows		 * there to be more than 10000 nodes.		 */		StringBuffer line = new StringBuffer();		for(int j=0; j<4; j++) line.append((char)getByteFromFile());		int multiplier = TextUtils.atoi(line.toString(), 0, 10);		nodcnt += multiplier * 10000;		int numSignals = numnoi + nodcnt - 1;		if (numSignals <= 0)		{			System.out.println("Error reading " + fileURL.getFile());			closeInput();			stopProgressDialog();			return;		}		// get version number (known to work with 9007, 9601)		int version = getHSpiceInt();		if (version != 9007 && version != 9601)			System.out.println("Warning: may not be able to read HSpice files of type " + version);		// ignore the unused/title information (4+72 characters over line break)		line = new StringBuffer();		for(int j=0; j<76; j++)		{			int k = getByteFromFile();			line.append((char)k);			if (!isTRACDCBinary && k == '\n') j--;		}		// ignore the date/time information (16 characters)		line = new StringBuffer();		for(int j=0; j<16; j++) line.append((char)getByteFromFile());		// ignore the copywrite information (72 characters over line break)		line = new StringBuffer();		for(int j=0; j<72; j++)		{			int k = getByteFromFile();			line.append((char)k);			if (!isTRACDCBinary && k == '\n') j--;		}		// get number of sweeps		int sweepcnt = getHSpiceInt();		if (DEBUGCONDITIONS)			System.out.println("++++++++++++++++++++ VERSION="+version+" SWEEPCNT="+sweepcnt+" CNDCNT="+cndcnt+" NUMNOI="+numnoi+" MULTIPLIER="+multiplier);		if (cndcnt == 0) sweepcnt = 0;		// ignore the Monte Carlo information (76 characters over line break)		line = new StringBuffer();		for(int j=0; j<76; j++)		{			int k = getByteFromFile();			line.append((char)k);			if (!isTRACDCBinary && k == '\n') j--;		}		// get the type of each signal		String [] signalNames = new String[numSignals];		int [] signalTypes = new int[numSignals];		for(int k=0; k<=numSignals; k++)		{			line = new StringBuffer();			for(int j=0; j<8; j++)			{				int l = getByteFromFile();				line.append((char)l);				if (!isTRACDCBinary && l == '\n') j--;			}			if (k == 0) continue;			int l = k - nodcnt;			if (k < nodcnt) l = k + numnoi - 1;			String lineStr = line.toString().trim();			signalTypes[l] = TextUtils.atoi(lineStr, 0, 10);		}		boolean paMissingWarned = false;		for(int k=0; k<=numSignals; k++)		{			line = new StringBuffer();			for(;;)			{				int l = getByteFromFile();				if (l == '\n') continue;				if (l == ' ')				{					if (line.length() != 0) break;					// if name starts with blank, skip until non-blank					for(;;)					{						l = getByteFromFile();						if (l != ' ') break;					}				}				line.append((char)l);				if (version == 9007 && line.length() >= 16) break;			}			int j = line.length();			int l = (j+16) / 16 * 16 - 1;			if (version == 9007)			{				l = (j+15) / 16 * 16 - 1;			}			for(; j<l; j++)			{				int i = getByteFromFile();				if (!isTRACDCBinary && i == '\n') { j--;   continue; }			}			if (k == 0) continue;			// convert name if there is a colon in it			int startPos = 0;			int openPos = line.indexOf("(");			if (openPos >= 0) startPos = openPos+1;			for(j=startPos; j<line.length(); j++)			{				if (line.charAt(j) == ':') break;				if (!TextUtils.isDigit(line.charAt(j))) break;			}			if (j < line.length() && line.charAt(j) == ':')			{				l = TextUtils.atoi(line.toString().substring(startPos), 0, 10);				PALine foundPALine = null;				if (paList == null)				{					if (!paMissingWarned)						System.out.println("Warning: there should be a ." + paExtension + " file with extra signal names");					paMissingWarned = true;				} else				{					for(PALine paLine : paList)					{						if (paLine.number == l) { foundPALine = paLine;   break; }					}				}				if (foundPALine != null)				{					StringBuffer newSB = new StringBuffer();					newSB.append(line.substring(0, startPos));					newSB.append(foundPALine.string);					newSB.append(line.substring(j+1));					line = newSB;				}			} else			{				if (line.indexOf(".") >= 0)				{					String fixedLine = removeLeadingX(line.toString());					line = new StringBuffer();					line.append(fixedLine);				}			}			// move parenthesis from the start to the last name			openPos = line.indexOf("(");			if (openPos >= 0)			{				String parenPrefix = line.substring(0, openPos+1);				int lastDot = line.lastIndexOf(".");				if (lastDot >= 0)				{					StringBuffer newSB = new StringBuffer();					if (parenPrefix.equalsIgnoreCase("v("))					{						// just ignore the V()						newSB.append(line.substring(openPos+1, lastDot+1));						newSB.append(line.substring(lastDot+1, line.length()-1));					} else					{						// move the parenthetical wrapper to the last dotted piece						newSB.append(line.substring(openPos+1, lastDot+1));						newSB.append(parenPrefix);						newSB.append(line.substring(lastDot+1));					}					line = newSB;				} else if (parenPrefix.equalsIgnoreCase("v("))				{					StringBuffer newSB = new StringBuffer();					// just ignore the V()					newSB.append(line.substring(openPos+1, line.length()-1));					line = newSB;				}			}			if (k < nodcnt) l = k + numnoi - 1; else l = k - nodcnt;			signalNames[l] = line.toString();		}		// read (and ignore) condition information		for(int c=0; c<cndcnt; c++)		{			int j = 0;			line = new StringBuffer();			for(;;)			{				int l = getByteFromFile();				if (l == '\n') continue;				if (l == ' ') break;				line.append((char)l);				j++;				if (j >= 16) break;			}			int l = (j+15) / 16 * 16 - 1;			for(; j<l; j++)			{				int i = getByteFromFile();				if (!isTRACDCBinary && i == '\n') { j--;   continue; }			}			if (DEBUGCONDITIONS)				System.out.println("CONDITION "+(c+1)+" IS "+line.toString());		}		// read the end-of-header marker		line = new StringBuffer();		if (!isTRACDCBinary)		{			// finish line, ensure the end-of-header			for(int j=0; ; j++)			{				int l = getByteFromFile();				if (l == '\n') break;				if (j < 4) line.append(l);			}		} else		{			// gather end-of-header string