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package com.nis.nmsclient.util;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
import org.apache.log4j.Logger;
import com.Ostermiller.util.ExcelCSVParser;
import com.Ostermiller.util.ExcelCSVPrinter;
import com.nis.nmsclient.util.io.UnicodeReader;
public class FileWrUtil {
static Logger logger = Logger.getLogger(FileWrUtil.class);
/**
* 根据文件编码添加文件内容前缀
* @param file
* @param encoding
*/
protected static boolean addFileHeadByEncoding(File file, String encoding) throws Exception{
FileOutputStream fos = null;
boolean flag = false;
try{
byte[] head = null;
if("UTF-8".equalsIgnoreCase(encoding)){
head = new byte[]{(byte)0xEF,(byte)0xBB,(byte)0xBF};
}else if("UTF-16BE".equalsIgnoreCase(encoding)){
head = new byte[]{(byte)0xFE,(byte)0xFF};
}else if("UTF-16LE".equalsIgnoreCase(encoding)){
head = new byte[]{(byte)0xFF,(byte)0xFE};
}else if("UTF-32BE".equalsIgnoreCase(encoding)){
head = new byte[]{(byte)0x00,(byte)0x00,(byte)0xFE,(byte)0xFF};
}else if("UTF-32LE".equalsIgnoreCase(encoding)){
head = new byte[]{(byte)0xFF,(byte)0xFF,(byte)0x00,(byte)0x00};
}
if(head!=null){
fos = new FileOutputStream(file);
fos.write(head);
fos.flush();
flag = true;
}
} catch (IOException e) {
throw e;
}finally {
if(fos!=null){
try {
fos.close();
} catch (IOException e) {
}
}
}
return flag;
}
/**
* 写入文件, .cfg\.ini\.txt
*
*/
public static boolean cfgFilePrinter(File file, String charset, String[] values) throws Exception{
OutputStreamWriter fos = null;
try {
if(addFileHeadByEncoding(file, charset)){
fos = new OutputStreamWriter(
new FileOutputStream(file,true), charset);
}else{
fos = new OutputStreamWriter(
new FileOutputStream(file), charset);
}
for(String val : values){
fos.write(val);
fos.write("\n");
}
fos.flush();
} catch (IOException e) {
throw e;
}finally {
if(fos!=null){
try {
fos.close();
} catch (IOException e) {
}
}
}
return true;
}
/**
* 追加内容到文件, .cfg\.ini\.txt
*
*/
public static boolean cfgFileAppender(File file, String charset, String[] values) throws Exception{
OutputStreamWriter fos = null;
try {
fos = new OutputStreamWriter(
new FileOutputStream(file, true), charset);
for(String val : values){
fos.write(val);
fos.write("\n");
}
fos.flush();
} catch (IOException e) {
throw e;
}finally {
if(fos!=null){
try {
fos.close();
} catch (IOException e) {
}
}
}
return true;
}
/**
* 根据文件的编码读取文件内容, .cfg\.ini\.txt
*
*/
public static String[] cfgFileReader(File file) throws Exception{
BufferedReader br = null;
ArrayList<String> list = new ArrayList<String>();
try {
br = new BufferedReader(new UnicodeReader(new FileInputStream(
file), Charset.defaultCharset().name()));
String str = null;
while((str=br.readLine())!=null){
list.add(str);
}
} catch (IOException e) {
throw e;
}finally {
if(br!=null){
try {
br.close();
} catch (IOException e) {
}
}
}
String[] values = new String[list.size()];
return list.toArray(values);
}
/**
* 写CSV文件，只写入一行
*
*/
public static boolean csvFilePrinter(File file, String charset, String[] values) throws Exception{
OutputStreamWriter fos = null;
try {
fos = new OutputStreamWriter(
new FileOutputStream(file), charset);
ExcelCSVPrinter ecsvp = new ExcelCSVPrinter(fos);
ecsvp.changeDelimiter(',');
ecsvp.setAutoFlush(true);
ecsvp.writeln(values);
fos.flush();
} catch (IOException e) {
throw e;
}finally {
if(fos!=null){
try {
fos.close();
} catch (IOException e) {
}
}
}
return true;
}
/**
* 写CSV文件，写入多行
*
*/
public static boolean csvFilePrinter(File file, String charset, List<String[]> values) throws Exception{
OutputStreamWriter fos = null;
try {
fos = new OutputStreamWriter(
new FileOutputStream(file), charset);
ExcelCSVPrinter ecsvp = new ExcelCSVPrinter(fos);
ecsvp.changeDelimiter(',');
ecsvp.setAutoFlush(true);
for(String[] val : values){
ecsvp.writeln(val);
}
fos.flush();
} catch (IOException e) {
throw e;
}finally {
if(fos!=null){
try {
fos.close();
} catch (IOException e) {
}
}
}
return true;
}
/**
* 解析CSV文件中的指定行
*
*/
public static String[] csvFileParser(File file, String charset, int rowNum) throws Exception{
Reader in = null;
String[] currLine = null;
try {
//创建解析信息流
in = new InputStreamReader(new FileInputStream(file),charset);
ExcelCSVParser csvParser = new ExcelCSVParser(in);
while((currLine=csvParser.getLine())!=null){
if(rowNum != csvParser.getLastLineNumber()){
currLine = null;
}
}
} catch (IOException e) {
throw e;
}finally {
if(in!=null){
try {
in.close();
} catch (IOException e) {
}
}
}
return currLine;
}
/**
* 解析CSV文件的所有行
*
*/
public static List<String[]> csvFileParser(File file, String charset) throws Exception{
Reader in = null;
List<String[]> allLineList = new ArrayList<String[]>();
try {
//创建解析信息流
in = new InputStreamReader(new FileInputStream(file),charset);
ExcelCSVParser csvParser = new ExcelCSVParser(in);
String[] currLine = null;
while((currLine=csvParser.getLine())!=null){
allLineList.add(currLine);
}
} catch (IOException e) {
throw e;
}finally {
if(in!=null){
try {
in.close();
} catch (IOException e) {
}
}
}
return allLineList;
}
}
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