package com.martin.simpledevelop.utils.io;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.EOFException;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import com.martin.simpledevelop.utils.log.SaLogUtils;
/**
* @Description IO流工具类<br>
* 仅支持文本操作<br>
* @File SaIOUtils.java
* @Package com.martin.simpledevelop.utils.io
* @Date 2015年6月26日上午1:22:01
* @Author Donghongyu 1358506549@qq.com
* @Version v1.0.0
*/
public class SaIOUtils {
/**
* Log 输出标签
*/
public static String TAG = SaIOUtils.class.getName();
/**
* 文本的写入操作
*
* @param filePath
* 文件路径。一定要加上文件名字 <br>
* 例如：../a/a.txt
* @param content
* 写入内容
*/
public static void write(String filePath, String content) {
BufferedWriter bufw = null;
try {
bufw = new BufferedWriter(new OutputStreamWriter(
new FileOutputStream(filePath)));
bufw.write(content);
} catch (Exception e) {
e.printStackTrace();
SaLogUtils.e(TAG, "文本的写入操作>>失败..." + e.getMessage());
} finally {
if (bufw != null) {
try {
bufw.close();
} catch (IOException e) {
e.printStackTrace();
SaLogUtils.e(TAG, "文本的写入操作>>失败..." + e.getMessage());
}
}
}
}
/**
* 文本的读取操作
*
* @param path
* 文件路径,一定要加上文件名字<br>
* 例如：../a/a.txt
* @return
*/
public static String read(String path) {
BufferedReader bufr = null;
try {
bufr = new BufferedReader(new InputStreamReader(
new FileInputStream(path)));
StringBuffer sb = new StringBuffer();
String str = null;
while ((str = bufr.readLine()) != null) {
sb.append(str);
}
return sb.toString();
} catch (Exception e) {
e.printStackTrace();
SaLogUtils.e(TAG, "文本的读取操作>>失败..." + e.getMessage());
} finally {
if (bufr != null) {
try {
bufr.close();
} catch (IOException e) {
e.printStackTrace();
SaLogUtils.e(TAG, "文本的读取操作>>失败..." + e.getMessage());
}
}
}
return null;
}
/**
* 文本的读取操作
*
* @param is
* 输入流
* @return
*/
public static String readIN(InputStream is) {
BufferedReader bufr = null;
try {
bufr = new BufferedReader(new InputStreamReader(is));
StringBuffer sb = new StringBuffer();
String str = null;
while ((str = bufr.readLine()) != null) {
sb.append(str);
}
return sb.toString();
} catch (Exception e) {
e.printStackTrace();
SaLogUtils.e(TAG, "文本的读取操作>>失败..." + e.getMessage());
} finally {
if (bufr != null) {
try {
bufr.close();
} catch (IOException e) {
e.printStackTrace();
SaLogUtils.e(TAG, "文本的读取操作>>失败..." + e.getMessage());
}
}
}
return null;
}
/**
* 把Stream转换成String
*
* @param is
* @return
*/
public static String convertStreamToString(InputStream is) {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line + "/n");
}
} catch (IOException e) {
e.printStackTrace();
SaLogUtils.e(TAG, " 把Stream转换成String>>失败..." + e.getMessage());
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
SaLogUtils.e(TAG, " 把Stream转换成String>>失败..." + e.getMessage());
}
}
return sb.toString();
}
/**
* 获取ByteArrayInputStream.
*
* @param buf
* the buf
* @return the input stream
*/
public static InputStream bytes2Stream(byte[] buf) {
return new ByteArrayInputStream(buf);
}
/**
* 从流中读取数据到byte[]..
*
* @param inStream
* the in stream
* @return the byte[]
* @throws IOException
* Signals that an I/O exception has occurred.
*/
public static byte[] stream2bytes(InputStream inStream) throws IOException {
byte[] buff = new byte[1024];
byte[] data = null;
try {
ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
int read = 0;
while ((read = inStream.read(buff, 0, 100)) > 0) {
swapStream.write(buff, 0, read);
}
data = swapStream.toByteArray();
} catch (Exception e) {
e.printStackTrace();
}
return data;
}
/**
* 从流中读取指定的长度到byte[].
*
* @param in
* the in
* @param length
* the length
* @return the byte[]
* @throws IOException
* Signals that an I/O exception has occurred.
*/
public static byte[] stream2Bytes(InputStream in, int length)
throws IOException {
byte[] bytes = new byte[length];
int count;
int pos = 0;
while (pos < length
&& ((count = in.read(bytes, pos, length - pos)) != -1)) {
pos += count;
}
if (pos != length) {
throw new IOException("Expected " + length + " bytes, read " + pos
+ " bytes");
}
return bytes;
}
/**
* Simple wrapper around {@link InputStream#read()} that throws EOFException
* instead of returning -1.
*
* @param is
* the is
* @return the int
* @throws IOException
* Signals that an I/O exception has occurred.
*/
public static int read(InputStream is) throws IOException {
int b = is.read();
if (b == -1) {
throw new EOFException();
}
return b;
}
/**
* Write int.
*
* @param os
* the os
* @param n
* the n
* @throws IOException
* Signals that an I/O exception has occurred.
*/
public static void writeInt(OutputStream os, int n) throws IOException {
os.write((n >> 0) & 0xff);
os.write((n >> 8) & 0xff);
os.write((n >> 16) & 0xff);
os.write((n >> 24) & 0xff);
}
/**
* Read int.
*
* @param is
* the is
* @return the int
* @throws IOException
* Signals that an I/O exception has occurred.
*/
public static int readInt(InputStream is) throws IOException {
int n = 0;
n |= (read(is) << 0);
n |= (read(is) << 8);
n |= (read(is) << 16);
n |= (read(is) << 24);
return n;
}
/**
* Write long.
*
* @param os
* the os
* @param n
* the n
* @throws IOException
* Signals that an I/O exception has occurred.
*/
public static void writeLong(OutputStream os, long n) throws IOException {
os.write((byte) (n >>> 0));
os.write((byte) (n >>> 8));
os.write((byte) (n >>> 16));
os.write((byte) (n >>> 24));
os.write((byte) (n >>> 32));
os.write((byte) (n >>> 40));
os.write((byte) (n >>> 48));
os.write((byte) (n >>> 56));
}
/**
* Read long.
*
* @param is
* the is
* @return the long
* @throws IOException
* Signals that an I/O exception has occurred.
*/
public static long readLong(InputStream is) throws IOException {
long n = 0;
n |= ((read(is) & 0xFFL) << 0);
n |= ((read(is) & 0xFFL) << 8);
n |= ((read(is) & 0xFFL) << 16);
n |= ((read(is) & 0xFFL) << 24);
n |= ((read(is) & 0xFFL) << 32);
n |= ((read(is) & 0xFFL) << 40);
n |= ((read(is) & 0xFFL) << 48);
n |= ((read(is) & 0xFFL) << 56);
return n;
}
/**
* Write string.
*
* @param os
* the os
* @param s
* the s
* @throws IOException
* Signals that an I/O exception has occurred.
*/
public static void writeString(OutputStream os, String s)
throws IOException {
byte[] b = s.getBytes("UTF-8");
writeLong(os, b.length);
os.write(b, 0, b.length);
}
/**
* Read string.
*
* @param is
* the is
* @return the string
* @throws IOException
* Signals that an I/O exception has occurred.
*/
public static String readString(InputStream is) throws IOException {
int n = (int) readLong(is);
byte[] b = SaIOUtils.stream2Bytes(is, n);
return new String(b, "UTF-8");
}
/**
* Write string string map.
*
* @param map
* the map
* @param os
* the os
* @throws IOException
* Signals that an I/O exception has occurred.
*/
public static void writeStringStringMap(Map<String, String> map,
OutputStream os) throws IOException {
if (map != null) {
writeInt(os, map.size());
for (Map.Entry<String, String> entry : map.entrySet()) {
writeString(os, entry.getKey());
writeString(os, entry.getValue());
}
} else {
writeInt(os, 0);
}
}
/**
* Read string string map.
*
* @param is
* the is
* @return the map
* @throws IOException
* Signals that an I/O exception has occurred.
*/
public static Map<String, String> readStringStringMap(InputStream is)
throws IOException {
int size = readInt(is);
Map<String, String> result = (size == 0) ? Collections
.<String, String> emptyMap()
: new HashMap<String, String>(size);
for (int i = 0; i < size; i++) {
String key = readString(is).intern();
String value = readString(is).intern();
result.put(key, value);
}
return result;
}
}