Strip block comments: Difference between revisions

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@@ Line 604: / Line 604: @@
 =={{header|Java}}==
 <lang java>import java.io.*;
-import java.lang.StringBuilder;
 public class StripBlockComments{
-    public static void main(String[] args) {
+    public static String readFile(String filename) {
+	BufferedReader reader = new BufferedReader(new FileReader(filename));
-	if (args.length < 3) {
+	try {
-	    System.out.println("Usage: BeginToken EndToken StringToProcess");
+	    StringBuilder fileContents = new StringBuilder();
-	} else {
-	    String beginToken = args[0];
+	    char[] buffer = new char[4096];
+	    while (reader.read(buffer, 0, 4096) > 0) {
-	    String endToken = args[1];
+		fileContents.append(buffer);
-	    String inputFile = args[2];
-	    String input = "";
-	    try {
-		BufferedReader reader = new BufferedReader(new FileReader(inputFile));
-		StringBuilder fileContents = new StringBuilder();
-		char[] buffer = new char[4096];
-		while (reader.read(buffer, 0, 4096) > 0) {
-		    fileContents.append(buffer);
-		}
-		input = fileContents.toString();
-	    } catch (Exception e) {
-		e.printStackTrace();
-		System.exit(1);
 	    }
+	    return fileContents.toString();
-	    StringBuilder output = new StringBuilder();
+	} finally {
-	    while (true) {
+	    reader.close();
-		int begin = input.indexOf(beginToken);
+	}
-		int end = input.indexOf(endToken, begin+beginToken.length());
+    }
-		if (begin == -1) {
-		    output.append(input);
+    public static String stripComments(String beginToken, String endToken,
-		    break;
+				       String input) {
-		}
+	StringBuilder output = new StringBuilder();
-		output.append(input.substring(0, begin));
+	while (true) {
-		input = input.substring(end + endToken.length(), input.length());
+	    int begin = input.indexOf(beginToken);
+	    int end = input.indexOf(endToken, begin+beginToken.length());
+	    if (begin == -1 || end == -1) {
+		output.append(input);
+		return output.toString();
 	    }
-	    System.out.println(output.toString());
+	    output.append(input.substring(0, begin));
+	    input = input.substring(end + endToken.length());
+	}
+    }
+    public static void main(String[] args) {
+	if (args.length < 3) {
+	    System.out.println("Usage: BeginToken EndToken FileToProcess");
+	    System.exit(1);
+	}
+	String begin = args[0];
+	String end = args[1];
+	String input = args[2];
+	try {
+	    System.out.println(stripComments(begin, end, readFile(input)));
+	} catch (Exception e) {
+	    e.printStackTrace();
+	    System.exit(1);
 	}
     }