options.java

emacs的一个非常有用的插件,叫xrefactory,可以实现source insight里的那种函数跳转.和cscope(跳回来不方便)配合使用,非常的不错.

			return(new Option(desc, vals));
		}

		public static final int MAX_PROJECTS = 1000;

		public void reParseSingleProject(Options cp) throws Exception {
			cp.optioni = 0;
			while (ind<sslen) {
				Option oo = parseOption();
				if (oo.option == optProjectMarker) {
					cp.add(new Option(optProjectMarker, getProjectChangeDirs(oo.fulltext[1])));
				} else {
					cp.add(oo);
				}
				ind = s.skipBlank(ss, ind, sslen);
			}
		}

		public Options[] parseFile() throws Exception {
			Options[] res = new Options[MAX_PROJECTS];
			Options cp;
			int resi = 0;
			res[resi++] = cp = new Options("", "");
			while (ind<sslen) {
				Option oo = parseOption();
				if (oo.option == optProjectMarker) {
					String pname = getProjectName(oo.fulltext[1]);
					String chdirs = getProjectChangeDirs(oo.fulltext[1]);
					res[resi++] = cp = new Options(pname, chdirs);
				} else {
					cp.add(oo);
				}
				ind = s.skipBlank(ss, ind, sslen);
			}
			Options[] rres = new Options[resi];
			System.arraycopy(res, 0, rres, 0, resi);
			return(rres);
		}

		OptionParser(File ff) throws Exception {
			ss = new XrefCharBuffer();
			ss.appendFileContent(ff);
			sslen = ss.length();
			ind = 0;
		}

		OptionParser(String  s) {
			ss = new XrefCharBuffer(s);
			sslen = ss.length();
			ind = 0;
		}

	} // (OptionParser)

	// ------------------------- Options -------------------------------

    public static final int OPTIONS_ALLOCC_CHUNK = 2;

	String		projectName;
    Option[] 	option = new Option[0];
    int			optioni = 0;
    int			allocatedSize = 0;

	// copy constructor, if adding fiels, do not forget to add it here
	Options(Options op) {
		int i;
		projectName = op.projectName;
		option = new Option[op.option.length];
		for(i=0; i<op.optioni; i++) {
			option[i] = new Option(op.option[i]);
		}
		optioni = op.optioni;
		allocatedSize = op.allocatedSize;
	}

    int indexOf(Option opt) {
		for(int i=0; i<optioni; i++) {
			if (s.stringArrayEqual(option[i].fulltext, opt.fulltext)) return(i);
		}
		return(-1);
    }

    boolean contains(Option opt) {
		return(indexOf(opt)!=-1);
    }

	Option getContainedOption(OptionDescription od) {
		for(int i=0; i<optioni; i++) {
			if (option[i].option == od) return(option[i]);
		}
		return(null);
	}

	void add(Option o) {
		if (optioni >= allocatedSize) {
			Option[] n = new Option[allocatedSize+OPTIONS_ALLOCC_CHUNK];
			System.arraycopy(option, 0, n, 0, allocatedSize);
			option = n;
			allocatedSize += OPTIONS_ALLOCC_CHUNK;
		}
		if (o.option.addAtBeginning) {
			System.arraycopy(option, 0, option, 1, optioni);
			option[0] = o;			
		} else {
			option[optioni] = o;
		}
		optioni++;
	}

	void add(Option o, int preferedIndex) {
		if (optioni >= allocatedSize) {
			Option[] n = new Option[allocatedSize+OPTIONS_ALLOCC_CHUNK];
			System.arraycopy(option, 0, n, 0, allocatedSize);
			option = n;
			allocatedSize += OPTIONS_ALLOCC_CHUNK;
		}
		if (preferedIndex < 0 || preferedIndex >= optioni) {
			option[optioni] = o;
		} else {
			for(int i=optioni; i>preferedIndex; i--) option[i] = option[i-1];
			option[preferedIndex] = o;
		}
		optioni++;
	}

    void delete(int i) {
		s.assertt(optioni > 0);
		optioni --;
		for(int j=i; j<optioni; j++) option[j] = option[j+1];
    }

    int delete(Option opt) {
		int i = indexOf(opt);
		if (i != -1) delete(i);
		return(i);
    }

	String getProjectAutoDetectionOpt() {
		for(int i=0; i<optioni; i++) {
			if (option[i].option == optProjectMarker) {
				return(option[i].fulltext[1]);
			}
		}
		return("");
	}

	String getOptionText(Option o) {
		String res = "";
		if (o.option.compact) {
			String oo = "";
			for(int j=0; j<o.fulltext.length; j++) {
				oo += o.fulltext[j];
			}
			if (o.option == optCommentOption) {
				res += oo + "\n";
			} else {
				res += s.sprintOption(oo);
			}
		} else {
			for(int j=0; j<o.fulltext.length; j++) {
				if (j!=0) res += " ";
				res += s.sprintOption(o.fulltext[j]);
			}
		}
		return(res);
	}


    public String toString(boolean fileFormat) {
		String res = "\n";
		if (!projectName.equals("")) {
			res += "[" + projectName;
			String changeDirectories = getProjectAutoDetectionOpt();
			if (! changeDirectories.equals("")) res += s.classPathSeparator + changeDirectories;
			res += "]\n  ";
		} else {
			res += "  ";
		}
		for(int i=0; i<optioni; i++) {
			if (option[i].option != optProjectMarker) {
				res += getOptionText(option[i]);
				if (res.charAt(res.length()-1)=='\n') {
					res += "  ";
				} else {
					res += "\n  ";
				}

			}
		}
		return(res);
    }

    public String toString() {
		return(toString(false));
	}

	public static void printOptions(Options[] pp, PrintStream oo) {
		for(int i=0; i<pp.length; i++) {
			oo.println(pp[i].toString());
		}
	}

	public static boolean projectMarkersOverlapps(String d1, String d2) {	
		int d1len = d1.length();
		int d2len = d2.length();
		if (d1len == d2len) {
			if (d1.equals(d2)) return(true);
		} else if (d1len < d2len) {
			if (d1.equals(d2.substring(0,d1len-1))) {
				if (d2.substring(d1len, d1len+1).equals(s.slash)) return(true);
			}
		} else {
			if (d2.equals(d1.substring(0,d2len-1))) {
				if (d1.substring(d2len, d2len+1).equals(s.slash)) return(true);
			}
		}
		return(false);
	}

	public static String getProjectName(String oo) {
		PathIterator ii = new PathIterator(oo,s.classPathSeparator);
		if (! ii.hasNext()) return("");
		while (ii.hasNext()) {
			String p = ii.next();
			if (p.length()>0 && !p.substring(0,1).equals(s.slash)) return(p);
		}
		ii = new PathIterator(oo,s.classPathSeparator);
		return(ii.next());
	}

	public static String getProjectChangeDirs(String oo) {
		String pname = getProjectName(oo);
		PathIterator ii = new PathIterator(oo,s.classPathSeparator);
		if (! ii.hasNext()) return("");
		String res = "";
		while (ii.hasNext()) {
			String p = ii.next();
			if (!p.equals(pname)) {
				if (res.equals("")) res = p;
				else res += s.classPathSeparator + p;
			}
		}
		return(res);
	}

	public static String [] getProjectNames(Options [] projects, String zeroName) {
		String[] pn = new String[projects.length];
		for(int i=0; i<projects.length; i++) {
			pn[i] = projects[i].projectName;
		}
		pn[0] = zeroName;
		return(pn);
	}


	public static void saveOptions(Options[] pp, String fileName) {
		PrintStream ps = null;
		try {
			ps = new PrintStream(new FileOutputStream(fileName));
			//&PrintStream ps = System.err;
			printOptions(pp, ps);
			ps.close();
		} catch (Exception e) {
			if (s.debug) e.printStackTrace(System.err);
			JOptionPane.showMessageDialog(s.view, "While saving options: " + e, 
										  "Xrefactory Error", 
										  JOptionPane.ERROR_MESSAGE);				
			if (ps!=null) ps.close();
		}
	}

	public static void dump(Options[] pp) {
		printOptions(pp, System.err);
	}

	void addNewProjectOptions(String projectName, String changeDirectories,
							  String classPath, String sourcePath
		) {
		add(new Option(optInputFile, changeDirectories));
		add(new Option(optPruneDirs, "CVS"+s.classPathSeparator+"backup"));
		add(new Option(optXrefsFile, s.tagFilesDirectory+projectName));
		add(new Option(optXrefNum, ""+10));
		add(new Option(optClassPath, classPath));
		add(new Option(optSourcePath, sourcePath));
		add(new Option(optJavaVersion, "1.3"));
		add(new Option(optCSuffixes, "c"+s.classPathSeparator+"C"));
		add(new Option(optJavaSuffixes, "java"));
		add(new Option(optJdkClassPath, s.jdkClassPath));
		String jdkhome = new File(s.javaHome).getParent();
		if (jdkhome!=null) {
			add(new Option(optJavaDocPath, jdkhome+"/docs/api"));
		}
	}


	Options(String projectName, String changeDirectories) {
		this.projectName = projectName;
		optioni = 0;
		add(new Option(optProjectMarker, changeDirectories));
	}

}