Mega Code Archive
Allows reading and writing to a plain text file via a list of lines
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/*
* Copyright (c) 2006-2008 Chris Smith, Shane Mc Cormack, Gregory Holmes
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
//package com.dmdirc.util;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
/**
* Allows reading and writing to a plain text file via a list of lines.
*
* @author chris
*/
public class TextFile {
/** The file we're dealing with. */
private File file;
/** The input stream we're dealing with. */
private InputStream is;
/**
* Creates a new instance of TextFile for the specified file.
*
* @param filename The file to be read/written
*/
public TextFile(final String filename) {
file = new File(filename);
}
/**
* Creates a new instance of TextFile for the specified URI.
*
* @param uri The URI of the file
* @deprecated Pass an InputStream or File instead
*/
@Deprecated
public TextFile(final URI uri) {
file = new File(uri);
}
/**
* Creates a new instance of TextFile for the specified File.
*
* @param file The file to read
*/
public TextFile(final File file) {
this.file = file;
}
/**
* Creates a new instance of TextFile for an input stream.
*
* @param is The input stream to read from
*/
public TextFile(final InputStream is) {
this.is = is;
}
/**
* Retrieves the contents of the file as a list of lines.
*
* @return A list of lines in the file
* @throws IOException if an I/O exception occurs
*/
public List<String> getLines() throws IOException {
final BufferedReader reader = new BufferedReader(
file == null ? new InputStreamReader(is) : new FileReader(file));
final List<String> res = new ArrayList<String>();
String line;
while ((line = reader.readLine()) != null) {
res.add(line);
}
//reader.close();
return res;
}
/**
* Writes the specified list of lines to the file.
*
* @param lines The lines to be written
* @throws IOException if an I/O exception occurs
*/
public void writeLines(final List<String> lines) throws IOException {
if (file == null) {
throw new UnsupportedOperationException("Cannot write to TextFile "
+ "opened with an InputStream");
}
final BufferedWriter writer = new BufferedWriter(new FileWriter(file));
for (String line : lines) {
writer.write(line);
writer.newLine();
}
writer.close();
}
/**
* Retrieves the File for this TextFile, if there is one.
*
* @return This TextFile's file, or null
*/
public File getFile() {
return file;
}
}
/*
package com.dmdirc.util;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.List;
import org.junit.Test;
import static org.junit.Assert.*;
public class TextFileTest extends junit.framework.TestCase {
@Test
public void testGetLines() {
try {
final TextFile file =
new TextFile(getClass().getClassLoader().
getResource("com/dmdirc/util/test1.txt").toURI());
final List<String> lines = file.getLines();
assertEquals(7, lines.size());
assertEquals("Line 1", lines.get(0));
} catch (FileNotFoundException ex) {
assertFalse(true);
} catch (IOException ex) {
assertFalse(true);
} catch (URISyntaxException ex) {
// Do nothing
}
}
@Test
public void testGetLines2() {
try {
final TextFile file =
new TextFile(getClass().getClassLoader().
getResource("com/dmdirc/util/test1.txt").openStream());
final List<String> lines = file.getLines();
assertEquals(7, lines.size());
assertEquals("Line 1", lines.get(0));
} catch (FileNotFoundException ex) {
assertFalse(true);
} catch (IOException ex) {
assertFalse(true);
}
}
}
*/
]]>