Java Path File List nio retrieveTokenFilesInDirImportableFrom(Path dir, List excludedTokenFiles)

Description

retrieve Token Files In Dir Importable From

License

BSD License

Declaration

private static List<String> retrieveTokenFilesInDirImportableFrom(Path dir, List<String> excludedTokenFiles) 

Method Source Code

//package com.java2s;
/*//from   ww w .  j a  v  a2s.c om
BSD License
    
Copyright (c) 2016, Fr?d?ric Yvon Vinet
All rights reserved.
    
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    
* Redistributions of source code must retain the above copyright
  notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
  notice, this list of conditions and the following disclaimer in the
  documentation and/or other materials provided with the distribution.
* The name of its author may not be used to endorse or promote products
  derived from this software without specific prior written permission.
    
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

import java.io.IOException;

import java.nio.file.DirectoryStream;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.PathMatcher;

import java.util.ArrayList;

import java.util.Iterator;
import java.util.List;

import java.util.regex.PatternSyntaxException;

public class Main {
    private static List<String> retrieveTokenFilesInDirImportableFrom(Path dir, List<String> excludedTokenFiles) {
        //        System.out.println("ProjectHelper:retrieveTokenFilesInDirImportableFrom(Project, Path) -> List<String> : begin");
        assert dir != null;
        List<String> answer = new ArrayList<>();
        PathMatcher matcher = FileSystems.getDefault().getPathMatcher("glob:**/*.tokens");
        //        System.out.println("- content of directory: " + dir.toString());
        try (DirectoryStream<Path> filePathStream = Files.newDirectoryStream(dir);) {
            Iterator<Path> iterator = filePathStream.iterator();
            while (iterator.hasNext()) {
                Path path = iterator.next();
                //                System.out.println("  * path=" + path.toString());
                if (matcher.matches(path)) {
                    // We've got a tokens file
                    // We extract its file name from its path (extension must be
                    // removed)
                    String tokenFileName = path.getFileName().toString();
                    int end = tokenFileName.lastIndexOf(".tokens");
                    tokenFileName = tokenFileName.substring(0, end);
                    //                    System.out.println("    file name=" + tokenFileName);
                    // A grammar cannot import a token file generated by itself
                    // so the tokens files associated to the current grammar must
                    // not be proposed
                    if (!excludedTokenFiles.contains(tokenFileName)) {
                        answer.add(tokenFileName);

                        //                        System.out.println
                        //                             ("    " + tokenFileName +
                        //                              " accepted because ending with .tokens");

                    }
                }
            }
        } catch (IOException | PatternSyntaxException ex) {
            ex.printStackTrace();
        }
        //        System.out.println("ProjectHelper:retrieveTokenFilesInDirImportableFrom(Project, Path) -> List<String> : end");
        return answer;
    }
}

Related

1. mergeInto(List parts, OutputStream out)
2. pathContainsAny(List strings)
3. recursiveListFiles(Path file)
4. recusivelyCollectFileListing(ArrayList rc, Path base, Path directory)
5. registerRecursive(final WatchService watcher, final List startingPaths)
6. toCliString(Path agentPath, String param)
7. toFile(Path file, String list)
8. uncheckedList(final Path path)
9. validateAndAdd(Path path, String expression, LinkedList files)