ANSI颜色的Java Swing文本字段

Question

有没有什么简单的方法来分析日志文件中的ANSI颜色，并在Swing使用它在文本字段（的JTextArea，JTextPane中，...）？

Answer 1

没有尝试过，但有some code here（这需要一些格式化，以看起来不错），它声称自己是一个ANSI彩色JTextPane的子类...

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对于后人，这里是通过NetBeans运行类格式化代码

import javax.swing.*; 
import javax.swing.text.*; 
import java.awt.Color; 

public class ColorPane extends JTextPane { 
    static final Color D_Black = Color.getHSBColor(0.000f, 0.000f, 0.000f); 
    static final Color D_Red  = Color.getHSBColor(0.000f, 1.000f, 0.502f); 
    static final Color D_Blue = Color.getHSBColor(0.667f, 1.000f, 0.502f); 
    static final Color D_Magenta = Color.getHSBColor(0.833f, 1.000f, 0.502f); 
    static final Color D_Green = Color.getHSBColor(0.333f, 1.000f, 0.502f); 
    static final Color D_Yellow = Color.getHSBColor(0.167f, 1.000f, 0.502f); 
    static final Color D_Cyan = Color.getHSBColor(0.500f, 1.000f, 0.502f); 
    static final Color D_White = Color.getHSBColor(0.000f, 0.000f, 0.753f); 
    static final Color B_Black = Color.getHSBColor(0.000f, 0.000f, 0.502f); 
    static final Color B_Red  = Color.getHSBColor(0.000f, 1.000f, 1.000f); 
    static final Color B_Blue = Color.getHSBColor(0.667f, 1.000f, 1.000f); 
    static final Color B_Magenta = Color.getHSBColor(0.833f, 1.000f, 1.000f); 
    static final Color B_Green = Color.getHSBColor(0.333f, 1.000f, 1.000f); 
    static final Color B_Yellow = Color.getHSBColor(0.167f, 1.000f, 1.000f); 
    static final Color B_Cyan = Color.getHSBColor(0.500f, 1.000f, 1.000f); 
    static final Color B_White = Color.getHSBColor(0.000f, 0.000f, 1.000f); 
    static final Color cReset = Color.getHSBColor(0.000f, 0.000f, 1.000f); 
    static Color colorCurrent = cReset; 
    String remaining = ""; 

    public void append(Color c, String s) { 
    StyleContext sc = StyleContext.getDefaultStyleContext(); 
    AttributeSet aset = sc.addAttribute(SimpleAttributeSet.EMPTY, StyleConstants.Foreground, c); 
    int len = getDocument().getLength(); // same value as getText().length(); 
    setCaretPosition(len); // place caret at the end (with no selection) 
    setCharacterAttributes(aset, false); 
    replaceSelection(s); // there is no selection, so inserts at caret 
    } 

    public void appendANSI(String s) { // convert ANSI color codes first 
    int aPos = 0; // current char position in addString 
    int aIndex = 0; // index of next Escape sequence 
    int mIndex = 0; // index of "m" terminating Escape sequence 
    String tmpString = ""; 
    boolean stillSearching = true; // true until no more Escape sequences 
    String addString = remaining + s; 
    remaining = ""; 

    if (addString.length() > 0) { 
     aIndex = addString.indexOf("\u001B"); // find first escape 
     if (aIndex == -1) { // no escape/color change in this string, so just send it with current color 
     append(colorCurrent,addString); 
     return; 
     } 
// otherwise There is an escape character in the string, so we must process it 

     if (aIndex > 0) { // Escape is not first char, so send text up to first escape 
     tmpString = addString.substring(0,aIndex); 
     append(colorCurrent, tmpString); 
     aPos = aIndex; 
     } 
// aPos is now at the beginning of the first escape sequence 

     stillSearching = true; 
     while (stillSearching) { 
     mIndex = addString.indexOf("m",aPos); // find the end of the escape sequence 
     if (mIndex < 0) { // the buffer ends halfway through the ansi string! 
      remaining = addString.substring(aPos,addString.length()); 
      stillSearching = false; 
      continue; 
     } 
     else { 
      tmpString = addString.substring(aPos,mIndex+1); 
      colorCurrent = getANSIColor(tmpString); 
     } 
     aPos = mIndex + 1; 
// now we have the color, send text that is in that color (up to next escape) 

     aIndex = addString.indexOf("\u001B", aPos); 

     if (aIndex == -1) { // if that was the last sequence of the input, send remaining text 
      tmpString = addString.substring(aPos,addString.length()); 
      append(colorCurrent, tmpString); 
      stillSearching = false; 
      continue; // jump out of loop early, as the whole string has been sent now 
     } 

     // there is another escape sequence, so send part of the string and prepare for the next 
     tmpString = addString.substring(aPos,aIndex); 
     aPos = aIndex; 
     append(colorCurrent, tmpString); 

     } // while there's text in the input buffer 
    } 
    } 

    public Color getANSIColor(String ANSIColor) { 
    if (ANSIColor.equals("\u001B[30m"))  { return D_Black; } 
    else if (ANSIColor.equals("\u001B[31m")) { return D_Red; } 
    else if (ANSIColor.equals("\u001B[32m")) { return D_Green; } 
    else if (ANSIColor.equals("\u001B[33m")) { return D_Yellow; } 
    else if (ANSIColor.equals("\u001B[34m")) { return D_Blue; } 
    else if (ANSIColor.equals("\u001B[35m")) { return D_Magenta; } 
    else if (ANSIColor.equals("\u001B[36m")) { return D_Cyan; } 
    else if (ANSIColor.equals("\u001B[37m")) { return D_White; } 
    else if (ANSIColor.equals("\u001B[0;30m")) { return D_Black; } 
    else if (ANSIColor.equals("\u001B[0;31m")) { return D_Red; } 
    else if (ANSIColor.equals("\u001B[0;32m")) { return D_Green; } 
    else if (ANSIColor.equals("\u001B[0;33m")) { return D_Yellow; } 
    else if (ANSIColor.equals("\u001B[0;34m")) { return D_Blue; } 
    else if (ANSIColor.equals("\u001B[0;35m")) { return D_Magenta; } 
    else if (ANSIColor.equals("\u001B[0;36m")) { return D_Cyan; } 
    else if (ANSIColor.equals("\u001B[0;37m")) { return D_White; } 
    else if (ANSIColor.equals("\u001B[1;30m")) { return B_Black; } 
    else if (ANSIColor.equals("\u001B[1;31m")) { return B_Red; } 
    else if (ANSIColor.equals("\u001B[1;32m")) { return B_Green; } 
    else if (ANSIColor.equals("\u001B[1;33m")) { return B_Yellow; } 
    else if (ANSIColor.equals("\u001B[1;34m")) { return B_Blue; } 
    else if (ANSIColor.equals("\u001B[1;35m")) { return B_Magenta; } 
    else if (ANSIColor.equals("\u001B[1;36m")) { return B_Cyan; } 
    else if (ANSIColor.equals("\u001B[1;37m")) { return B_White; } 
    else if (ANSIColor.equals("\u001B[0m")) { return cReset; } 
    else { return B_White; } 
    } 
} 

Answer 2

如果youre的JTextPane是不可编辑，然后tim_yates方法是行不通的，在他的方法来提高我取代他的append方法与

public void append(Color c, String s) { 
    StyleContext sc = StyleContext.getDefaultStyleContext(); 
    AttributeSet aset = sc.addAttribute(SimpleAttributeSet.EMPTY, StyleConstants.Foreground, c); 
    int len = getDocument().getLength(); 
    try {getDocument().insertString(len, s, aset);} 
    catch (BadLocationException e) {e.printStackTrace();} 
} 

这种方法似乎更加稳健，并在所有的我都试过了的情况下工作，但我还没有完全

这种方法在文件末尾的工作原理是将彩色文本，而不是测试它替换文本不存在的，如果它是不可编辑刚刚导致重复的Windows错误的声音是很烦人