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/*
 * Copyright (c) 2002-2007, Marc Prud'hommeaux. All rights reserved.
 *
 * This software is distributable under the BSD license. See the terms of the
 * BSD license in the documentation provided with this software.
 */
package qcloud.storage.ranger.thirdparty.jline;

import java.io.*;
import java.util.*;

/**
 *  A file name completor takes the buffer and issues a list of
 *  potential completions.
 *
 *  

* This completor tries to behave as similar as possible to * bash's file name completion (using GNU readline) * with the following exceptions: * *

    *
  • Candidates that are directories will end with "/"
  • *
  • Wildcard regular expressions are not evaluated or replaced
  • *
  • The "~" character can be used to represent the user's home, * but it cannot complete to other users' homes, since java does * not provide any way of determining that easily
  • *
* *

TODO

*
    *
  • Handle files with spaces in them
  • *
  • Have an option for file type color highlighting
  • *
* * @author Marc Prud'hommeaux */ public class FileNameCompletor implements Completor { public int complete(final String buf, final int cursor, final List candidates) { String buffer = (buf == null) ? "" : buf; String translated = buffer; // special character: ~ maps to the user's home directory if (translated.startsWith("~" + File.separator)) { translated = System.getProperty("user.home") + translated.substring(1); } else if (translated.startsWith("~")) { translated = new File(System.getProperty("user.home")).getParentFile() .getAbsolutePath(); } else if (!(translated.startsWith(File.separator))) { translated = new File("").getAbsolutePath() + File.separator + translated; } File f = new File(translated); final File dir; if (translated.endsWith(File.separator)) { dir = f; } else { dir = f.getParentFile(); } final File[] entries = (dir == null) ? new File[0] : dir.listFiles(); try { return matchFiles(buffer, translated, entries, candidates); } finally { // we want to output a sorted list of files sortFileNames(candidates); } } protected void sortFileNames(final List fileNames) { Collections.sort(fileNames); } /** * Match the specified buffer to the array of entries * and enter the matches into the list of candidates. This method * can be overridden in a subclass that wants to do more * sophisticated file name completion. * * @param buffer the untranslated buffer * @param translated the buffer with common characters replaced * @param entries the list of files to match * @param candidates the list of candidates to populate * * @return the offset of the match */ public int matchFiles(String buffer, String translated, File[] entries, List candidates) { if (entries == null) { return -1; } int matches = 0; // first pass: just count the matches for (int i = 0; i < entries.length; i++) { if (entries[i].getAbsolutePath().startsWith(translated)) { matches++; } } // green - executable // blue - directory // red - compressed // cyan - symlink for (int i = 0; i < entries.length; i++) { if (entries[i].getAbsolutePath().startsWith(translated)) { String name = entries[i].getName() + (((matches == 1) && entries[i].isDirectory()) ? File.separator : " "); /* if (entries [i].isDirectory ()) { name = new ANSIBuffer ().blue (name).toString (); } */ candidates.add(name); } } final int index = buffer.lastIndexOf(File.separator); return index + File.separator.length(); } }




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