ICU-3295 RBBI port to Java, perf test

X-SVN-Rev: 15528

icu4j/src/com/ibm/icu/dev/test/perf/RBBIPerf.java

@@ -0,0 +1,112 @@
+/*
+**********************************************************************
+* Copyright (c) 2002-2004, International Business Machines
+* Corporation and others.  All Rights Reserved.
+**********************************************************************
+*/
+package com.ibm.icu.dev.test.perf;
+import com.ibm.icu.text.*;
+import java.util.HashSet;
+import java.io.FileInputStream;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.IOException;
+
+/**
+ * A class for testing UnicodeSet performance.
+ *
+ * @author Alan Liu
+ * @since ICU 2.4
+ */
+public class RBBIPerf extends PerfTest {
+
+    String dataFileName;
+    RuleBasedBreakIterator bi;
+    String testString;
+
+    public static void main(String[] args) throws Exception {
+        new RBBIPerf().run(args);
+    }
+
+    protected void setup(String[] args) {
+        // We only take one argument, the pattern
+        if (args.length != 1) {
+            throw new RuntimeException("Please supply utf-8 encoded text data file");
+        }
+
+        try {
+        	dataFileName = args[0];
+        	StringBuffer  testFileBuf = new StringBuffer();
+        	InputStream is = new FileInputStream(dataFileName);
+        	InputStreamReader isr = new InputStreamReader(is, "UTF-8");           
+        	int c;
+        	for (;;) {
+        		c = isr.read();
+        		if (c < 0) {
+        			break;
+        		}
+        		UTF16.append(testFileBuf, c);
+        	}
+        	testString = testFileBuf.toString();
+        }
+        catch (IOException e) {
+        	throw new RuntimeException(e.toString());   
+        }
+        
+        bi = (RuleBasedBreakIterator)BreakIterator.getLineInstance();
+        bi.setText(testString);
+        
+    }
+
+    
+    
+    PerfTest.Function testRBBINext() {
+        return new PerfTest.Function() {
+            
+        	public void call() {
+        		bi.first();
+        		int n=0;
+        		for (n=bi.first(); n != BreakIterator.DONE; n=bi.next()) {
+        		}   
+        	}
+        	
+        	
+            public long getOperationsPerIteration() {
+                int n;
+                int count = 0;
+                for (n=bi.first(); n != BreakIterator.DONE; n=bi.next()) {
+                    count++;
+                }   
+                System.out.println(count);
+                return count;
+            }
+        };
+    }
+
+
+    PerfTest.Function testRBBIPrevious() {
+        return new PerfTest.Function() {
+            
+            public void call() {
+                bi.first();
+                int n=0;
+                for (n=bi.last(); n != BreakIterator.DONE; n=bi.previous()) {
+                }   
+            }
+            
+            
+            public long getOperationsPerIteration() {
+                int n;
+                int count = 0;
+                for (n=bi.last(); n != BreakIterator.DONE; n=bi.previous()) {
+                    count++;
+                }   
+                System.out.println(count);
+                return count;
+            }
+        };
+    }
+
+
+ 
+}