Android File Content Search fileContains(String aFileName, String aSearchString)

Description

Searches case sensitively, and returns true if the given SearchString occurs in the first File with the given Filename.

License

Open Source License

Parameter

Parameter	Description
aFileName	A files name
aSearchString	the string search for

Return

true if found in the file otherwise false

Declaration

public static boolean fileContains(String aFileName,
        String aSearchString) 

Method Source Code

//package com.java2s;
/*//from  w  w  w .ja  v a2s. c  o m
 * IzPack - Copyright 2001-2008 Julien Ponge, All Rights Reserved.
 *
 * http://izpack.org/
 * http://izpack.codehaus.org/
 *
 * Copyright 2005 Marc Eppelmann
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.*;

import java.util.ArrayList;
import java.util.List;

public class Main {
    /**
     * Searches case sensitively, and returns true if the given SearchString occurs in the
     * first File with the given Filename.
     *
     * @param aFileName     A files name
     * @param aSearchString the string search for
     * @return true if found in the file otherwise false
     */
    public static boolean fileContains(String aFileName,
            String aSearchString) {
        return (fileContains(aFileName, aSearchString, false));
    }

    /**
     * Tests if the given File contains the given Search String
     *
     * @param aFileName             A files name
     * @param aSearchString         the String to search for
     * @param caseInSensitiveSearch If false the Search is casesensitive
     * @return true if found in the file otherwise false
     */
    public static boolean fileContains(String aFileName,
            String aSearchString, boolean caseInSensitiveSearch) {
        boolean result = false;

        String searchString = caseInSensitiveSearch ? aSearchString
                .toLowerCase() : aSearchString;

        List<String> fileContent = new ArrayList<String>();

        try {
            fileContent = getFileContent(aFileName);
        } catch (IOException e) {
            // TODO handle Exception
            e.printStackTrace();
        }

        for (String currentline : fileContent) {
            if (caseInSensitiveSearch) {
                currentline = currentline.toLowerCase();
            }

            if (currentline.contains(searchString)) {
                result = true;

                break;
            }
        }

        return result;
    }

    /**
     * Gets the content from a File as StringArray List.
     *
     * @param fileName A file to read from.
     * @return List of individual line of the specified file. List may be empty but not
     *         null.
     * @throws IOException
     */
    public static List<String> getFileContent(String fileName)
            throws IOException {
        List<String> result = new ArrayList<String>();

        File aFile = new File(fileName);

        if (!aFile.isFile()) {
            //throw new IOException( fileName + " is not a regular File" );
            return result; // None
        }

        BufferedReader reader = null;

        try {
            reader = new BufferedReader(new FileReader(aFile));
        } catch (FileNotFoundException e) {
            // TODO handle Exception
            e.printStackTrace();

            return result;
        }

        String aLine = null;

        while ((aLine = reader.readLine()) != null) {
            result.add(aLine + "\n");
        }

        reader.close();

        return result;
    }
}

Related

1. fileContains(String aFileName, String aSearchString, boolean caseInSensitiveSearch)