multiple output styles

git-svn-id: https://svn.code.sf.net/p/jode/code/trunk@195 379699f6-c40d-0410-875b-85095c16579e

jode/jode/Decompiler.java

@@ -25,6 +25,12 @@ public class Decompiler {
     public final static String email = "jochen@gnu.org";
     public final static String copyright = 
 	"Jode (c) 1998,1999 Jochen Hoenicke <"+email+">";
+    
+    public final static int TAB_SIZE_MASK = 0x0f;
+    public final static int BRACE_AT_EOL  = 0x10;
+    public final static int SUN_STYLE = 0x14;
+    public final static int GNU_STYLE = 0x02;
+
     public static PrintStream err = System.err;
     public static boolean isVerbose = false;
     public static boolean isDebugging = false;
@@ -36,6 +42,7 @@ public class Decompiler {
     public static boolean doChecks = false;
     public static boolean prettyLocals = false;
     public static boolean immediateOutput = false;
+    public static int outputStyle = SUN_STYLE;
     public static int importPackageLimit = 3;
     public static int importClassLimit = 3;
 
@@ -58,6 +65,8 @@ public class Decompiler {
 		    "use `pretty' names for local variables.");
 	err.println("\t--cp <classpath> "+
 		    "search for classes in specified classpath.");
+	err.println("\t--style {sun|gnu}"+
+		    " specifies indentation style");
 	err.println("\t--import <pkglimit> <clslimit>");
 	err.println("\t                 "+
 	    "import classes used more than clslimit times");
@@ -108,7 +117,18 @@ public class Decompiler {
                 doChecks = true;
             else if (params[i].equals("--pretty"))
                 prettyLocals = true;
-            else if (params[i].equals("--import")) {
+            else if (params[i].equals("--style")) {
+		String style = params[++i];
+		if (style.equals("sun"))
+		    outputStyle = SUN_STYLE;
+		else if (style.equals("gnu"))
+		    outputStyle = GNU_STYLE;
+		else {
+		    err.println("Unknown style: "+style);
+		    usage();
+		    return;
+		}
+            } else if (params[i].equals("--import")) {
                 importPackageLimit = Integer.parseInt(params[++i]);
                 importClassLimit = Integer.parseInt(params[++i]);
             } else if (params[i].equals("--cp")) {
@@ -131,7 +151,7 @@ public class Decompiler {
         JodeEnvironment env = new JodeEnvironment(classPath);
 	TabbedPrintWriter writer = null;
 	if (destDir == null)
-	    writer = new TabbedPrintWriter(System.out, "    ");
+	    writer = new TabbedPrintWriter(System.out);
         for (; i< params.length; i++) {
 	    try {
 		if (destDir != null) {
@@ -140,11 +160,11 @@ public class Decompiler {
 			 params[i].replace('.', File.separatorChar)+".java");
 		    File directory = new File(file.getParent());
 		    if (!directory.exists() && !directory.mkdirs()) {
-			err.println("Could not create directory "+directory.getPath()+", "
+			err.println("Could not create directory "
+				    +directory.getPath()+", "
 				    +"check permissions.");
 		    }
-		    writer = new TabbedPrintWriter
-			(new FileOutputStream(file), "    ");
+		    writer = new TabbedPrintWriter(new FileOutputStream(file));
 		}
 		env.doClass(params[i], writer);
 	    } catch (IOException ex) {

jode/jode/decompiler/TabbedPrintWriter.java

@@ -22,46 +22,119 @@ import java.io.*;
 
 public class TabbedPrintWriter {
     boolean atbol;
-    String tabstr;
-    StringBuffer indent;
+    int indentsize;
+    int currentIndent = 0;
+    String indentStr = "";
     PrintWriter pw;
 
-    public TabbedPrintWriter (OutputStream os, String tabstr) {
-	pw = new PrintWriter(os);
-	this.tabstr=tabstr;
-	indent = new StringBuffer();
+    public TabbedPrintWriter (OutputStream os) {
+	pw = new PrintWriter(os, true);
+	this.indentsize = (Decompiler.outputStyle & Decompiler.TAB_SIZE_MASK);
 	atbol = true;
     }
 
-    public TabbedPrintWriter (Writer os, String tabstr) {
-	pw = new PrintWriter(os);
-	this.tabstr=tabstr;
-	indent = new StringBuffer();
+    public TabbedPrintWriter (Writer os) {
+	pw = new PrintWriter(os, true);
+	this.indentsize = (Decompiler.outputStyle & Decompiler.TAB_SIZE_MASK);
 	atbol = true;
     }
 
+    /**
+     * Convert the numeric indentation to a string.
+     */
+    public void makeIndentStr() {
+	int tabs = (currentIndent >> 3);
+	// This is a very fast implementation.
+	if (tabs <= 20)
+	    indentStr = "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t       "
+		.substring(20 - tabs, 20 + (currentIndent&7));
+	else {
+	    /* the slow way */
+	    StringBuffer sb = new StringBuffer(tabs+7);
+	    while (tabs > 20) {
+		sb.append("\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t");
+		tabs -= 20;
+	    }
+	    sb.append("\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t       "
+		      .substring(20 - tabs, tabs + (currentIndent&7)));
+	    indentStr = sb.toString();
+	} 
+    }
+
     public void tab() {
-	indent.append(tabstr);
+	currentIndent += indentsize;
+	makeIndentStr();
     }
 
     public void untab() {
-	indent.setLength(indent.length()-tabstr.length());
+	currentIndent -= indentsize;
+	makeIndentStr();
     }
 
-    public void println(String str) throws java.io.IOException {
-	if (atbol) {
-	    pw.print(indent);
-	}
+    private String newline = System.getProperty("line.separator");
+
+//     public void write(String str) {
+// 	if (atbol)
+// 	    super.write(indentStr);
+// 	super.write(str);
+// 	atbol = (str.equals(newline));
+//     }
+
+    public void println(String str) {
+	if (atbol)
+	    pw.print(indentStr);
 	pw.println(str);
-        pw.flush();
 	atbol = true;
     }
 
-    public void print(String str) throws java.io.IOException {
-	if (atbol) {
-	    pw.print(indent);
-	}
+    public void println() {
+	pw.println();
+	atbol = true;
+    }
+
+    public void print(String str) {
+	if (atbol)
+	    pw.print(indentStr);
 	pw.print(str);
 	atbol = false;
     }
+
+    /**
+     * Print a opening brace with the current indentation style.
+     * Called at the end of the line of the instance that opens the
+     * brace.  It doesn't do a tab stop after opening the brace.
+     */
+    public void openBrace() {
+	if ((Decompiler.outputStyle & Decompiler.BRACE_AT_EOL) != 0)
+	    if (atbol)
+		println("{");
+	    else
+		println(" {");
+	else {
+	    println();
+	    if (currentIndent > 0)
+		tab();
+	    println("{");
+	}
+    }
+
+    public void closeBraceContinue() {
+	if ((Decompiler.outputStyle & Decompiler.BRACE_AT_EOL) != 0)
+	    print("} ");
+	else {
+	    println("}");
+	    if (currentIndent > 0)
+		untab();
+	}
+    }
+
+    public void closeBrace() {
+	if ((Decompiler.outputStyle & Decompiler.BRACE_AT_EOL) != 0)
+	    println("}");
+	else {
+	    println("}");
+	    if (currentIndent > 0)
+		untab();
+	}
+    }
 }