| /* |
| ********************************************************************** |
| * Copyright (c) 2002-2007, International Business Machines |
| * Corporation and others. All Rights Reserved. |
| ********************************************************************** |
| */ |
| package com.ibm.icu.dev.test.perf; |
| |
| import java.io.BufferedReader; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.Locale; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import com.ibm.icu.dev.tool.UOption; |
| import com.ibm.icu.impl.LocaleUtility; |
| |
| /** |
| * Base class for performance testing framework. To use, the subclass can simply |
| * define one or more instance methods with names beginning with "test" (case |
| * ignored). The prototype of the method is |
| * |
| * PerfTest.Function testTheName() |
| * |
| * The actual performance test will execute on the returned Commond object |
| * (refer to Command Pattern). To call a test from command line, the 'test' |
| * prefix of the test method name can be ignored/removed. |
| * |
| * In addition, the subclass should define a main() method that calls |
| * PerfTest.run() as defined here. |
| * |
| * If the subclasses uses any command line arguments (beyond those handled |
| * automatically by this calss) then it should override PerfTest.setup() to |
| * handle its arguments. If the subclasse needs more sophisticated management |
| * for controlling finding/calling test method, it can replace the default |
| * implementation for PerfTest.testProvider before calling PerfTest.run(). |
| * |
| * Example invocation: java -cp classes -verbose:gc |
| * com.ibm.icu.dev.test.perf.UnicodeSetPerf --gc --passes 4 --iterations 100 |
| * UnicodeSetAdd [[:l:][:c:]] |
| * |
| * Example output: [GC 511K->192K(1984K), 0.0086170 secs] [GC 704K->353K(1984K), |
| * 0.0059619 secs] [Full GC 618K->371K(1984K), 0.0242779 secs] [Full GC |
| * 371K->371K(1984K), 0.0228649 secs] = testUnicodeSetAdd begin 100 = |
| * testUnicodeSetAdd end 11977 1109044 = testUnicodeSetAdd begin 100 = |
| * testUnicodeSetAdd end 12047 1109044 = testUnicodeSetAdd begin 100 = |
| * testUnicodeSetAdd end 11987 1109044 = testUnicodeSetAdd begin 100 = |
| * testUnicodeSetAdd end 11978 1109044 |
| * |
| * The [] lines are emitted by the JVM as a result of the -verbose:gc switch. |
| * |
| * Lines beginning with '=' are emitted by PerfTest: = testUnicodeSetAdd begin |
| * 100 A 'begin' statement contains the name of the setup method, which |
| * determines what test function is measures, and the number of iterations that |
| * will be times. = testUnicodeSetAdd end 12047 1109044 An 'end' statement gives |
| * the name of the setup method again, and then two integers. The first is the |
| * total elapsed time in milliseconds, and the second is the number of events |
| * per iteration. In this example, the time per event is 12047 / (100 * 1109044) |
| * or 108.6 ns/event. |
| * |
| * Raw times are given as integer ms, because this is what the system measures. |
| * |
| * @author Alan Liu |
| * @since ICU 2.4 |
| */ |
| public abstract class PerfTest { |
| // Command-line options set these: |
| protected boolean verbose; |
| |
| protected String sourceDir; |
| |
| protected String fileName; |
| |
| // protected String resolvedFileName; |
| protected String encoding; |
| |
| protected boolean uselen; |
| |
| protected int iterations; |
| |
| protected int passes; |
| |
| protected int time; |
| |
| protected boolean line_mode; |
| |
| protected boolean bulk_mode; |
| |
| protected Locale locale; |
| |
| protected boolean doPriorGC; |
| |
| protected TestCmdProvider testProvider = new TestPrefixProvider(this); |
| |
| static interface TestCmdProvider { |
| /** |
| * @return The names for all available test. |
| */ |
| public Set getAllTestCmdNames(); |
| |
| /** |
| * @param name |
| * @return Whether the given name is a test name. The implementation may |
| * have more sophisticated naming control here. |
| * TestCmdProvider.isTestCmd() != Set.contains() |
| */ |
| public boolean isTestCmd(String name); |
| |
| /** |
| * @param name |
| * @return the test Command or null |
| */ |
| public PerfTest.Function getTestCmd(String name); |
| } |
| |
| /** |
| * Treat all method beginning with 'test' prefix (ignoring case) for given |
| * object as the test methods. |
| */ |
| static class TestPrefixProvider implements TestCmdProvider { |
| private Map theTests = null; // Map<string(no case), string(with |
| |
| // case)> |
| |
| private Set orgNames = null; // shadow reference, ==theTests, for |
| |
| // better output |
| |
| private Object refer; |
| |
| TestPrefixProvider(Object theProvider) { |
| refer = theProvider; |
| } |
| |
| public Set getAllTestCmdNames() { |
| if (theTests == null) { |
| theTests = new HashMap(); |
| orgNames = new HashSet(); |
| Method[] methods = refer.getClass().getDeclaredMethods(); |
| for (int i = 0; i < methods.length; i++) { |
| String org = methods[i].getName(); |
| String name = org.toLowerCase(); // ignoring case |
| // beginning with 'test' |
| // Note: methods named 'test()' are ignored |
| if (name.length() > 4 && name.startsWith("test")) { |
| if (theTests.containsKey(name)) { |
| throw new Error( |
| "Duplicate method name ignoring case: " |
| + name); |
| } |
| theTests.put(name, org); |
| orgNames.add(org); |
| } |
| } |
| } |
| return orgNames; // begining with 'test', keeping case |
| } |
| |
| /** |
| * The given name will map to a method of the same name, or a method |
| * named "test" + name. Case is ignored. |
| */ |
| private String isTestCmd_impl(String name) { |
| getAllTestCmdNames(); |
| String tn1 = name.toLowerCase(); |
| String tn2 = "test" + tn1; |
| if (theTests.containsKey(tn1)) { |
| return tn1; |
| } else if (theTests.containsKey(tn2)) { |
| return tn2; |
| } |
| return null; |
| } |
| |
| public boolean isTestCmd(String name) { |
| return isTestCmd_impl(name) != null; |
| } |
| |
| public Function getTestCmd(String aname) { |
| String name = (String) theTests.get(isTestCmd_impl(aname)); |
| if (name == null) { |
| return null; |
| } |
| |
| try { |
| Method m = refer.getClass().getDeclaredMethod(name, |
| (Class[]) null); |
| return (Function) m.invoke(refer, new Object[] {}); |
| } catch (Exception e) { |
| throw new Error( |
| "TestPrefixProvider implementation error. Finding: " |
| + name, e); |
| } |
| } |
| } |
| |
| /** |
| * Subclasses of PerfTest will need to create subclasses of Function that |
| * define a call() method which contains the code to be timed. They then |
| * call setTestFunction() in their "Test..." method to establish this as the |
| * current test functor. |
| */ |
| public abstract static class Function { |
| |
| /** |
| * Subclasses must implement this method to do the action to be |
| * measured. |
| */ |
| public abstract void call(); |
| |
| /** |
| * Subclasses may implement this method to return positive integer |
| * indicating the number of operations in a single call to this object's |
| * call() method. If subclasses do not override this method, the default |
| * implementation returns 1. |
| */ |
| public long getOperationsPerIteration() { |
| return 1; |
| } |
| |
| /** |
| * Subclasses may implement this method to return either positive or |
| * negative integer indicating the number of events in a single call to |
| * this object's call() method. If subclasses do not override this |
| * method, the default implementation returns -1, indicating that events |
| * are not applicable to this test. e.g: Number of breaks / iterations |
| * for break iterator |
| */ |
| public long getEventsPerIteration() { |
| return -1; |
| } |
| |
| /** |
| * Call call() n times in a tight loop and return the elapsed |
| * milliseconds. If n is small and call() is fast the return result may |
| * be zero. Small return values have limited meaningfulness, depending |
| * on the underlying VM and OS. |
| */ |
| public final long time(long n) { |
| long start, stop; |
| start = System.currentTimeMillis(); |
| while (n-- > 0) { |
| call(); |
| } |
| stop = System.currentTimeMillis(); |
| return stop - start; // ms |
| } |
| } |
| |
| /** |
| * Exception indicating a usage error. |
| */ |
| public static class UsageException extends Exception { |
| /** |
| * For serialization |
| */ |
| private static final long serialVersionUID = -1201256240606806242L; |
| |
| public UsageException(String message) { |
| super(message); |
| } |
| |
| public UsageException() { |
| super(); |
| } |
| } |
| |
| /** |
| * Constructor. |
| */ |
| protected PerfTest() { |
| } |
| |
| /** |
| * Framework method. Default implementation does not parse any extra |
| * arguments. Subclasses may override this to parse extra arguments. |
| * Subclass implementations should NOT call the base class implementation. |
| */ |
| protected void setup(String[] args) { |
| if (args.length > 0) { |
| throw new RuntimeException("Extra arguments received"); |
| } |
| } |
| |
| /** |
| * These must be kept in sync with getOptions(). |
| */ |
| static final int HELP1 = 0; |
| |
| static final int HELP2 = 1; |
| |
| static final int VERBOSE = 2; |
| |
| static final int SOURCEDIR = 3; |
| |
| static final int ENCODING = 4; |
| |
| static final int USELEN = 5; |
| |
| static final int FILE_NAME = 6; |
| |
| static final int PASSES = 7; |
| |
| static final int ITERATIONS = 8; |
| |
| static final int TIME = 9; |
| |
| static final int LINE_MODE = 10; |
| |
| static final int BULK_MODE = 11; |
| |
| static final int LOCALE = 12; |
| |
| // Options above here are identical to those in C; keep in sync with C |
| // Options below here are unique to Java; shift down as necessary |
| static final int GARBAGE_COLLECT = 13; |
| |
| static final int LIST = 14; |
| |
| UOption[] getOptions() { |
| return new UOption[] { UOption.HELP_H(), UOption.HELP_QUESTION_MARK(), |
| UOption.VERBOSE(), UOption.SOURCEDIR(), |
| UOption.ENCODING(), |
| UOption.DEF("uselen", 'u', UOption.NO_ARG), |
| UOption.DEF("file-name", 'f', UOption.REQUIRES_ARG), |
| UOption.DEF("passes", 'p', UOption.REQUIRES_ARG), |
| UOption.DEF("iterations", 'i', UOption.REQUIRES_ARG), |
| UOption.DEF("time", 't', UOption.REQUIRES_ARG), |
| UOption.DEF("line-mode", 'l', UOption.NO_ARG), |
| UOption.DEF("bulk-mode", 'b', UOption.NO_ARG), |
| UOption.DEF("locale", 'L', UOption.REQUIRES_ARG), |
| |
| // Options above here are identical to those in C; keep in sync |
| // Options below here are unique to Java |
| |
| UOption.DEF("gc", 'g', UOption.NO_ARG), |
| UOption.DEF("list", (char) -1, UOption.NO_ARG), }; |
| } |
| |
| /** |
| * Subclasses should call this method in their main(). run() will in turn |
| * call setup() with any arguments it does not parse. This method parses the |
| * command line and runs the tests given on the command line, with the given |
| * parameters. See the class description for details. |
| */ |
| protected final void run(String[] args) throws Exception { |
| Set testList = parseOptions(args); |
| |
| // Run the tests |
| for (Iterator iter = testList.iterator(); iter.hasNext();) { |
| String meth = (String) iter.next(); |
| |
| // Call meth to set up the test |
| // long eventsPerCall = -1; |
| Function testFunction = testProvider.getTestCmd(meth); |
| if (testFunction == null) { |
| throw new RuntimeException(meth |
| + " failed to return a test function"); |
| } |
| if (testFunction.getOperationsPerIteration() < 1) { |
| throw new RuntimeException(meth |
| + " returned an illegal operations/iteration()"); |
| } |
| |
| long t; |
| // long b = System.currentTimeMillis(); |
| long loops = getIteration(meth, testFunction); |
| // System.out.println("The guess cost: " + |
| // (System.currentTimeMillis() - b)/1000. + " s."); |
| |
| for (int j = 0; j < passes; ++j) { |
| long events = -1; |
| if (verbose) { |
| if (iterations > 0) { |
| System.out |
| .println("= " + meth + " begin " + iterations); |
| } else { |
| System.out.println("= " + meth + " begin " + time |
| + " seconds"); |
| } |
| } else { |
| System.out.println("= " + meth + " begin "); |
| } |
| |
| t = testFunction.time(loops); // ms |
| events = testFunction.getEventsPerIteration(); |
| |
| if (verbose) { |
| if (events == -1) { |
| System.out.println("= " + meth + " end " + (t / 1000.0) |
| + " loops: " + loops + " operations: " |
| + testFunction.getOperationsPerIteration()); |
| } else { |
| System.out.println("= " + meth + " end " + (t / 1000.0) |
| + " loops: " + loops + " operations: " |
| + testFunction.getOperationsPerIteration() |
| + " events: " + events); |
| } |
| } else { |
| if (events == -1) { |
| System.out.println("= " + meth + " end " + (t / 1000.0) |
| + " " + loops + " " |
| + testFunction.getOperationsPerIteration()); |
| } else { |
| System.out.println("= " + meth + " end " + (t / 1000.0) |
| + " " + loops + " " |
| + testFunction.getOperationsPerIteration() |
| + " " + events); |
| } |
| } |
| |
| } |
| } |
| } |
| |
| /** |
| * @param args |
| * @return the method list to call |
| * @throws UsageException |
| */ |
| private Set parseOptions(String[] args) throws UsageException { |
| |
| doPriorGC = false; |
| encoding = ""; |
| uselen = false; |
| fileName = null; |
| sourceDir = null; |
| // lines = null; |
| line_mode = false; |
| // buffer = null; |
| // bufferLen = 0; |
| verbose = false; |
| bulk_mode = false; |
| passes = iterations = time = -1; |
| locale = null; |
| |
| UOption[] options = getOptions(); |
| int remainingArgc = UOption.parseArgs(args, options); |
| |
| if (args.length == 0 || options[HELP1].doesOccur |
| || options[HELP2].doesOccur) { |
| throw new UsageException(); |
| } |
| |
| if (options[VERBOSE].doesOccur) { |
| verbose = true; |
| } |
| |
| if (options[SOURCEDIR].doesOccur) { |
| sourceDir = options[SOURCEDIR].value; |
| } |
| |
| if (options[ENCODING].doesOccur) { |
| encoding = options[ENCODING].value; |
| } |
| |
| if (options[USELEN].doesOccur) { |
| uselen = true; |
| } |
| |
| if (options[FILE_NAME].doesOccur) { |
| fileName = options[FILE_NAME].value; |
| } |
| |
| if (options[TIME].doesOccur && options[ITERATIONS].doesOccur) { |
| throw new UsageException( |
| "Cannot specify both '-t time' and '-i iterations'"); |
| } |
| |
| if (!options[TIME].doesOccur && !options[ITERATIONS].doesOccur) { |
| throw new UsageException( |
| "Either '-t time' or '-i iteration' must be specified"); |
| } |
| |
| if (options[PASSES].doesOccur) { |
| passes = Integer.parseInt(options[PASSES].value); |
| } else { |
| throw new UsageException("'-p pass' must be specified"); |
| } |
| |
| if (options[ITERATIONS].doesOccur) { |
| iterations = Integer.parseInt(options[ITERATIONS].value); |
| } |
| |
| if (options[TIME].doesOccur) { |
| time = Integer.parseInt(options[TIME].value); |
| } |
| |
| if (options[LINE_MODE].doesOccur && options[BULK_MODE].doesOccur) { |
| throw new UsageException( |
| "Cannot specify both line mode and bulk mode"); |
| } |
| |
| if (options[LINE_MODE].doesOccur) { |
| line_mode = true; |
| bulk_mode = false; |
| } |
| |
| if (options[BULK_MODE].doesOccur) { |
| bulk_mode = true; |
| line_mode = false; |
| } |
| |
| if (options[LOCALE].doesOccur) { |
| locale = LocaleUtility.getLocaleFromName(options[LOCALE].value); |
| } |
| |
| if (options[GARBAGE_COLLECT].doesOccur) { |
| doPriorGC = true; |
| } |
| |
| if (options[LIST].doesOccur) { |
| System.err.println("Available tests:"); |
| Set testNames = testProvider.getAllTestCmdNames(); |
| for (Iterator iter = testNames.iterator(); iter.hasNext();) { |
| String name = (String) iter.next(); |
| System.err.println(" " + name); |
| } |
| System.exit(0); |
| } |
| |
| Set testList = new HashSet(); |
| int i, j; |
| for (i = 0; i < remainingArgc; ++i) { |
| |
| // is args[i] a method name? |
| if (testProvider.isTestCmd(args[i])) { |
| testList.add(args[i]); |
| } else { |
| // args[i] is neither a method name nor a number. Pass |
| // everything from here on through to the subclass via |
| // setup(). |
| break; |
| } |
| } |
| |
| if (testList.size() < 1) { // run all tests |
| Set testNames = testProvider.getAllTestCmdNames(); |
| for (Iterator iter = testNames.iterator(); iter.hasNext();) { |
| String name = (String) iter.next(); |
| testList.add(name); |
| } |
| } |
| |
| // Pass remaining arguments, if any, through to the subclass |
| // via setup() method. |
| String[] subclassArgs = new String[remainingArgc - i]; |
| for (j = 0; i < remainingArgc; ++j) { |
| subclassArgs[j] = args[i++]; |
| } |
| setup(subclassArgs); |
| |
| if (doPriorGC) { |
| // Put the heap in a consistent state |
| gc(); |
| } |
| return testList; |
| } |
| |
| /** |
| * Translate '-t time' to iterations (or just return '-i iteration') |
| * |
| * @param meth |
| * @param fn |
| * @return |
| */ |
| private long getIteration(String methName, Function fn) { |
| long iter = 0; |
| if (time < 0) { // && iterations > 0 |
| iter = iterations; |
| } else { // && iterations < 0 |
| // Translate time to iteration |
| // Assuming there is a linear relation between time and iterations |
| |
| if (verbose) { |
| System.out.println("= " + methName + " calibrating " + time |
| + " seconds"); |
| } |
| |
| long base = time * 1000; |
| // System.out.println("base :" + base); |
| long seed = 1; |
| long t = 0; |
| while (t < base * 0.9 || base * 1.1 < t) { // + - 10% |
| if (iter == 0 || t == 0) { |
| iter = seed; // start up from 1 |
| seed *= 100; // if the method is too fast (t == 0), |
| // multiply 100 times |
| // 100 is rational because 'base' is always larger than 1000 |
| } else { |
| // If 't' is large enough, use linear function to calculate |
| // new iteration |
| // |
| // new iter(base) old iter |
| // -------------- = -------- = k |
| // new time old time |
| // |
| // System.out.println("before guess t: " + t); |
| // System.out.println("before guess iter: " + iter); |
| iter = (long) ((double) iter / t * base); // avoid long |
| // cut, eg. 1/10 |
| // == 0 |
| if (iter == 0) { |
| throw new RuntimeException( |
| "Unable to converge on desired duration"); |
| } |
| } |
| t = fn.time(iter); |
| } |
| // System.out.println("final t : " + t); |
| // System.out.println("final i : " + iter); |
| } |
| return iter; |
| } |
| |
| /** |
| * Invoke the runtime's garbage collection procedure repeatedly until the |
| * amount of free memory stabilizes to within 10%. |
| */ |
| protected void gc() { |
| if (false) { |
| long last; |
| long free = 1; |
| Runtime runtime = Runtime.getRuntime(); |
| do { |
| runtime.gc(); |
| last = free; |
| free = runtime.freeMemory(); |
| } while (((double) Math.abs(free - last)) / free > 0.1); |
| // Wait for the change in free memory to drop under 10% |
| // between successive calls. |
| } |
| |
| // From "Java Platform Performance". This is the procedure |
| // recommended by Javasoft. |
| try { |
| System.gc(); |
| Thread.sleep(100); |
| System.runFinalization(); |
| Thread.sleep(100); |
| |
| System.gc(); |
| Thread.sleep(100); |
| System.runFinalization(); |
| Thread.sleep(100); |
| } catch (InterruptedException e) { |
| } |
| } |
| |
| /* |
| * Private utility to convert a List of Integer objects to int[]. |
| */ |
| /* |
| * private static int[] toIntArray(List list) { int[] result = new |
| * int[list.size()]; for (int i=0; i<list.size(); ++i) { result[i] = |
| * ((Integer) list.get(i)).intValue(); } return result; } |
| */ |
| |
| public static char[] readToEOS(InputStreamReader stream) { |
| ArrayList vec = new ArrayList(); |
| int count = 0; |
| int pos; |
| final int MAXLENGTH = 0x8000; // max buffer size - 32K |
| int length = 0x80; // start with small buffers and work up |
| |
| try { |
| char[] firstChars = new char[1]; |
| stream.read(firstChars, 0, 1); |
| if (!(firstChars[0] == BOM1 || firstChars[0] == BOM2)) { |
| // if it's not the UTF-8 BOM, add the three char to vec |
| vec.add(firstChars); |
| count = 1; |
| } |
| } catch (IOException ex) { |
| } |
| |
| do { |
| pos = 0; |
| length = length >= MAXLENGTH ? MAXLENGTH : length * 2; |
| char[] buffer = new char[length]; |
| try { |
| do { |
| int n = stream.read(buffer, pos, length - pos); |
| if (n == -1) { |
| break; |
| } |
| pos += n; |
| } while (pos < length); |
| } catch (IOException e) { |
| } |
| vec.add(buffer); |
| count += pos; |
| } while (pos == length); |
| |
| char[] data = new char[count]; |
| pos = 0; |
| for (int i = 0; i < vec.size(); ++i) { |
| char[] buf = (char[]) vec.get(i); |
| int len = Math.min(buf.length, count - pos); |
| System.arraycopy(buf, 0, data, pos, len); |
| pos += len; |
| } |
| return data; |
| } |
| |
| public static byte[] readToEOS(InputStream stream) { |
| |
| ArrayList vec = new ArrayList(); |
| int count = 0; |
| int pos; |
| final int MAXLENGTH = 0x8000; // max buffer size - 32K |
| int length = 0x80; // start with small buffers and work up |
| |
| try { |
| byte[] firstChars = new byte[1]; |
| stream.read(firstChars, 0, 1); |
| if (!(firstChars[0] == BOM1 || firstChars[0] == BOM2)) { |
| // if it's not the UTF-8 BOM, add the first char to vec |
| vec.add(firstChars); |
| count = 1; |
| } |
| } catch (IOException ex) { |
| } |
| |
| do { |
| pos = 0; |
| length = length >= MAXLENGTH ? MAXLENGTH : length * 2; |
| byte[] buffer = new byte[length]; |
| try { |
| do { |
| int n = stream.read(buffer, pos, length - pos); |
| if (n == -1) { |
| break; |
| } |
| pos += n; |
| } while (pos < length); |
| } catch (IOException e) { |
| } |
| vec.add(buffer); |
| count += pos; |
| } while (pos == length); |
| |
| byte[] data = new byte[count]; |
| pos = 0; |
| for (int i = 0; i < vec.size(); ++i) { |
| byte[] buf = (byte[]) vec.get(i); |
| int len = Math.min(buf.length, count - pos); |
| System.arraycopy(buf, 0, data, pos, len); |
| pos += len; |
| } |
| return data; |
| } |
| |
| public String[] readLines(String filename, String encoding, boolean bulkMode) { |
| FileInputStream fis = null; |
| InputStreamReader isr = null; |
| BufferedReader br = null; |
| try { |
| fis = new FileInputStream(filename); |
| isr = new InputStreamReader(fis, encoding); |
| br = new BufferedReader(isr); |
| } catch (Exception e) { |
| System.err.println("Error: File access exception: " |
| + e.getMessage() + "!"); |
| System.exit(1); |
| } |
| ArrayList list = new ArrayList(); |
| while (true) { |
| String line = null; |
| try { |
| line = readDataLine(br); |
| } catch (Exception e) { |
| System.err.println("Read File Error" + e.getMessage() + "!"); |
| System.exit(1); |
| } |
| if (line == null) |
| break; |
| if (line.length() == 0) |
| continue; |
| list.add(line); |
| } |
| |
| int size = list.size(); |
| String[] lines = null; |
| |
| if (bulkMode) { |
| lines = new String[1]; |
| StringBuffer buffer = new StringBuffer(""); |
| for (int i = 0; i < size; ++i) { |
| buffer.append((String) list.get(i)); |
| /* |
| * if (i < (size - 1)) { buffer.append("\r\n"); } |
| */ |
| } |
| lines[0] = buffer.toString(); |
| } else { |
| lines = new String[size]; |
| for (int i = 0; i < size; ++i) { |
| lines[i] = (String) list.get(i); |
| } |
| } |
| |
| return lines; |
| } |
| |
| public String readDataLine(BufferedReader br) throws Exception { |
| String originalLine = ""; |
| String line = ""; |
| try { |
| line = originalLine = br.readLine(); |
| if (line == null) |
| return null; |
| if (line.length() > 0 && line.charAt(0) == 0xFEFF) |
| line = line.substring(1); |
| int commentPos = line.indexOf('#'); |
| if (commentPos >= 0) |
| line = line.substring(0, commentPos); |
| line = line.trim(); |
| } catch (Exception e) { |
| throw new Exception("Line \"{0}\", \"{1}\"" + originalLine + " " |
| + line + " " + e.toString()); |
| } |
| return line; |
| } |
| |
| final public static int BOM1 = 0xfeff; // big endian byte order mark |
| |
| final public static int BOM2 = 0xfffe; // little endian byte order mark |
| } |
| |
| // eof |
