Breakpoints presentation in the Disassembly view.

1 files changed, 113 insertions, 0 deletions

diff --git a/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/LineBreakingReader.java b/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/LineBreakingReader.java
new file mode 100644
index 00000000000..de54602107c
--- /dev/null
+++ b/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/LineBreakingReader.java
@@ -0,0 +1,113 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.cdt.debug.internal.ui;
+ 
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.Reader;
+
+import java.text.BreakIterator;
+import org.eclipse.swt.graphics.GC;
+
+/*
+ * Not a real reader. Could change if requested
+ */
+public class LineBreakingReader {
+	
+	private BufferedReader fReader;
+	private GC fGC;
+	private int fMaxWidth;
+	
+	private String fLine;
+	private int fOffset;
+	
+	private BreakIterator fLineBreakIterator;
+
+	/**
+	 * Creates a reader that breaks an input text to fit in a given width.
+	 * @param reader Reader of the input text
+	 * @param gc The graphic context that defines the currently used font sizes
+	 * @param maxLineWidth The max width (pixes) where the text has to fit in 
+	 */
+	public LineBreakingReader(Reader reader, GC gc, int maxLineWidth) {
+		fReader= new BufferedReader(reader);
+		fGC= gc;
+		fMaxWidth= maxLineWidth;
+		fOffset= 0;
+		fLine= null;
+		fLineBreakIterator= BreakIterator.getLineInstance();
+	}
+	
+	public boolean isFormattedLine() {
+		return fLine != null;
+	}
+	
+	/**
+	 * Reads the next line. The lengths of the line will not exceed the gived maximum
+	 * width.
+	 */
+	public String readLine() throws IOException {
+		if (fLine == null) {
+			String line= fReader.readLine();
+			if (line == null)
+				return null;
+								
+			int lineLen= fGC.textExtent(line).x;
+			if (lineLen < fMaxWidth) {
+				return line;
+			}
+			fLine= line;
+			fLineBreakIterator.setText(line);
+			fOffset= 0;
+		}
+		int breakOffset= findNextBreakOffset(fOffset);
+		String res;
+		if (breakOffset != BreakIterator.DONE) {
+			res= fLine.substring(fOffset, breakOffset);
+			fOffset= findWordBegin(breakOffset);
+			if (fOffset == fLine.length()) {
+				fLine= null;
+			}
+		} else {
+			res= fLine.substring(fOffset);
+			fLine= null;
+		}
+		return res;
+	}
+	
+	private int findNextBreakOffset(int currOffset) {
+		int currWidth= 0;
+		int nextOffset= fLineBreakIterator.following(currOffset);
+		while (nextOffset != BreakIterator.DONE) {
+			String word= fLine.substring(currOffset, nextOffset);
+			int wordWidth= fGC.textExtent(word).x;
+			int nextWidth= wordWidth + currWidth;
+			if (nextWidth > fMaxWidth) {
+				if (currWidth > 0) {
+					return currOffset;
+				} else {
+					return nextOffset;
+				}
+			}
+			currWidth= nextWidth;
+			currOffset= nextOffset;
+			nextOffset= fLineBreakIterator.next();
+		}
+		return nextOffset;
+	}
+	
+	private int findWordBegin(int idx) {
+		while (idx < fLine.length() && Character.isWhitespace(fLine.charAt(idx))) {
+			idx++;
+		}
+		return idx;
+	}	
+}