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// --- BEGIN COPYRIGHT BLOCK ---
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package com.netscape.cmscore.util;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
public class FileAsString {
protected String mFilename;
protected long mLastRead = 0;
private String fileContents = null;
private Object userObject = null;
/**
* This class enables you to get treat a file as a string
* If the file changes underneath you, it will automatically
* be read
*/
public FileAsString(String filename) throws IOException {
mFilename = filename;
readFile();
}
public boolean fileHasChanged() throws IOException {
File file = new File(mFilename);
long lastmodified = file.lastModified();
return (lastmodified != mLastRead);
}
private void readFile()
throws IOException {
BufferedReader br = createBufferedReader(mFilename);
StringBuffer buf = new StringBuffer();
int bytesread = 0;
do {
char cbuf[] = new char[16];
bytesread = br.read(cbuf, 0, cbuf.length);
if (bytesread > 0) {
buf.append(cbuf, 0, bytesread);
}
} while (bytesread != -1);
br.close();
fileContents = new String(buf);
}
private BufferedReader createBufferedReader(String filename)
throws IOException {
Debug.trace("createBufferedReader(filename=" + filename + ")");
BufferedReader br = null;
FileReader fr = null;
try {
File file = new File(filename);
mLastRead = file.lastModified();
fr = new FileReader(file);
br = new BufferedReader(fr);
mFilename = filename;
} catch (IOException e) {
throw e;
}
return br;
}
public String getAsString()
throws IOException {
if (fileHasChanged()) {
readFile();
}
return fileContents;
}
public Object getUserObject() {
try {
if (fileHasChanged()) {
userObject = null;
}
} catch (Exception e) {
userObject = null;
}
return userObject;
}
public void setUserObject(Object x) {
userObject = x;
}
public String getFilename() {
return mFilename;
}
}
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