fileutil.java

Sequoia ERP是一个真正的企业级开源ERP解决方案。它提供的模块包括：电子商务应用(e-commerce), POS系统(point of sales),知识管理,存货与仓库管理

/*
 * $Id: FileUtil.java 7217 2006-04-06 18:55:22Z jaz $
 *
 * Copyright (c) 2001-2006 The Open For Business Project - www.ofbiz.org
 *
 * 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 org.ofbiz.base.util;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.BufferedReader;

/**
 * File Utilities
 *
 * @author     <a href="mailto:[e-mail]">Andy Zeneski</a>
 * @version    $Rev: 7217 $
 * @since      3.5
 */
public class FileUtil {

    public static final String module = FileUtil.class.getName();

    public static void writeString(String fileName, String s) throws IOException {
        writeString(null, fileName, s);
    }

    public static void writeString(String path, String name, String s) throws IOException {
        Writer out = getBufferedWriter(path, name);

        try {
            out.write(s + System.getProperty("line.separator"));
        } catch (IOException e) {
            Debug.logError(e, module);
            throw e;
        } finally {
            if (out != null) {
                try {
                    out.close();
                } catch (IOException e) {
                    Debug.logError(e, module);
                }
            }
        }
    }

    public static Writer getBufferedWriter(String path, String name) throws IOException {
        String fileName = getPatchedFileName(path, name);
        if (UtilValidate.isEmpty(fileName)) {
            throw new IOException("Cannot obtain buffered writer for an empty filename!");
        }

        return new BufferedWriter(new FileWriter(fileName));
    }

    public static String getPatchedFileName(String path, String fileName) throws IOException {
        // make sure the export directory exists
        if (UtilValidate.isNotEmpty(path)) {
            path = path.replaceAll("\\\\", "/");
            File parentDir = new File(path);
            if (!parentDir.exists()) {
                if (!parentDir.mkdir()) {
                    throw new IOException("Cannot create directory for path: " + path);
                }
            }

            // build the filename with the path
            if (!path.endsWith("/")) {
                path = path + "/";
            }
            if (fileName.startsWith("/")) {
                fileName = fileName.substring(1);
            }
            fileName = path + fileName;
        }

        return fileName;
    }

    public static StringBuffer readTextFile(String fileName, boolean newline) throws FileNotFoundException, IOException {
        File file = new File(fileName);
        if (!file.exists()) {
            throw new FileNotFoundException();
        }

        StringBuffer buf = new StringBuffer();
        BufferedReader in = null;
        try {
            in = new BufferedReader(new FileReader(file));

            String str;
            while ((str = in.readLine()) != null) {
                buf.append(str);
                if (newline) {
                    buf.append(System.getProperty("line.separator"));
                }
            }
        } catch (IOException e) {
            Debug.logError(e, module);
            throw e;
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    Debug.logError(e, module);
                }
            }
        }
        
        return buf;
    }
}