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ページの作成:「==Java ファイルの分割結合== [Java]{{category コード片}} java sdk 5.0 以上 簡易ファイル分割結合ツール。JavaSDKがインストールされ…」
==Java ファイルの分割結合==
[Java]{{category コード片}}
java sdk 5.0 以上
簡易ファイル分割結合ツール。JavaSDKがインストールされたPCでコンパイルして使ってください。
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FilenameFilter;
import java.util.Arrays;
public class Split {
private final int BUF_SIZE_1KB = 1024; //1kb
private final String SEQ_LEN = "3";
private final String FILE_SEQ_SUFFIX = "%0"+ SEQ_LEN + "d";
private final String FILE_NAME_REP = "_[0-9]{"+ SEQ_LEN + "}$";
public static void main(String[] args) {
Split me = new Split();
int splitSize = 1000; // 1mb default
try {
String mode = args[0];
if ("-help".equals(mode)) {
Split.printUsage();
return;
} else if
("s".equals(mode) || "-s".equals(mode)) {
try {
splitSize = Integer.parseInt(args[3]);
} catch (Exception e) {}
me.split(args[1], args[2], splitSize);
} else if
("c".equals(mode) || "-c".equals(mode)) {
me.concat(args[1]);
} else {
Split.printUsage();
}
} catch (Exception e) {
Split.printUsage();
e.printStackTrace();
}
System.out.println("finish");
}
/**
* ファイルを指定サイズ(KB)で分割
* @param inFile 対象ファイル
* @param outDir 出力ディレクトリ
* @param sizeKb サイズ
* @throws Exception
*/
public void split(String inFile, String outDir, int sizeKb) throws Exception {
File od = createDir(outDir);
byte[] buf = new byte[BUF_SIZE_1KB];
BufferedInputStream is = getBufferedInputStream(inFile);
BufferedOutputStream os = null;
int sizeLimit = sizeKb;
int sizeCnt = 0;
int idx = 1;
int ret = -1;
boolean isFirstCreateFlg = true;
while((ret = is.read(buf)) > 0) {
if ((sizeCnt >= sizeLimit) || isFirstCreateFlg) {
closeBufferdOutputStream(os);
os = getBufferedOutputStream(
absolutePath(od,
(new File(inFile)).getName() + "_" + String.format(FILE_SEQ_SUFFIX, idx++))
);
isFirstCreateFlg = false;
sizeCnt = 0;
}
os.write(buf,0, ret);
os.flush();
sizeCnt++; // kb
}
closeBufferdOutputStream(os);
closeBufferdInputStream(is);
}
/**
* ファイルを結合
* @param outDir 分割されたファイルがあるディレクトリ
* @throws Exception
*/
public void concat(String outDir) throws Exception {
File od = new File(outDir);
if (!od.exists() || !od.isDirectory()) {
return;
}
String[] fs = od.list(new FilenameFilter(){
public boolean accept(File dir, String name) {
return name.matches("^.*" + FILE_NAME_REP);
}
});
BufferedInputStream is = null;
BufferedOutputStream os = null;
Arrays.sort(fs);
byte[] buf = new byte[BUF_SIZE_1KB];
int ret = -1;
for (int i=0; i<fs.length ;i++) {
if (os == null) {
String originalFileName = absolutePath(od, fs[i].replaceFirst(FILE_NAME_REP, ""));
os = getBufferedOutputStream(originalFileName);
}
is = getBufferedInputStream(absolutePath(od, fs[i]));
while((ret = is.read(buf)) > 0) {
os.write(buf, 0, ret);
os.flush();
}
os.flush();
closeBufferdInputStream(is);
}
closeBufferdOutputStream(os);
}
private String absolutePath(File dir, String filename) {
return dir.getAbsolutePath() + File.separator + filename;
}
private BufferedInputStream getBufferedInputStream(String inputFilename) throws FileNotFoundException {
return new BufferedInputStream(new FileInputStream(new File(inputFilename)));
}
private void closeBufferdOutputStream(BufferedOutputStream os) throws Exception {
if (os != null) {
os.flush();
os.close();
}
}
private void closeBufferdInputStream(BufferedInputStream is) throws Exception {
if (is != null) {
is.close();
}
}
private BufferedOutputStream getBufferedOutputStream(String fineName) throws Exception {
File f = new File(fineName);
f.createNewFile();
return new BufferedOutputStream(new FileOutputStream(f));
}
private File createDir(String dirName) {
File od = new File(dirName);
if (!od.exists()) {
od.mkdir();
}
return od;
}
private static void printUsage() {
StringBuilder buf = new StringBuilder();
buf.append("java split mode target_file output_dir [output_filesize(kb)]\n");
buf.append("\tmode:-s split file, -c concatinate files\n");
buf.append("\ttarget_file:target file to split.\n");
buf.append("\toutput_dir:target directory for output splitted files.\n");
buf.append("\toutput_filesize(kb):output file size as KB.\n");
System.out.println(buf.toString());
}
}
[Java]{{category コード片}}
java sdk 5.0 以上
簡易ファイル分割結合ツール。JavaSDKがインストールされたPCでコンパイルして使ってください。
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FilenameFilter;
import java.util.Arrays;
public class Split {
private final int BUF_SIZE_1KB = 1024; //1kb
private final String SEQ_LEN = "3";
private final String FILE_SEQ_SUFFIX = "%0"+ SEQ_LEN + "d";
private final String FILE_NAME_REP = "_[0-9]{"+ SEQ_LEN + "}$";
public static void main(String[] args) {
Split me = new Split();
int splitSize = 1000; // 1mb default
try {
String mode = args[0];
if ("-help".equals(mode)) {
Split.printUsage();
return;
} else if
("s".equals(mode) || "-s".equals(mode)) {
try {
splitSize = Integer.parseInt(args[3]);
} catch (Exception e) {}
me.split(args[1], args[2], splitSize);
} else if
("c".equals(mode) || "-c".equals(mode)) {
me.concat(args[1]);
} else {
Split.printUsage();
}
} catch (Exception e) {
Split.printUsage();
e.printStackTrace();
}
System.out.println("finish");
}
/**
* ファイルを指定サイズ(KB)で分割
* @param inFile 対象ファイル
* @param outDir 出力ディレクトリ
* @param sizeKb サイズ
* @throws Exception
*/
public void split(String inFile, String outDir, int sizeKb) throws Exception {
File od = createDir(outDir);
byte[] buf = new byte[BUF_SIZE_1KB];
BufferedInputStream is = getBufferedInputStream(inFile);
BufferedOutputStream os = null;
int sizeLimit = sizeKb;
int sizeCnt = 0;
int idx = 1;
int ret = -1;
boolean isFirstCreateFlg = true;
while((ret = is.read(buf)) > 0) {
if ((sizeCnt >= sizeLimit) || isFirstCreateFlg) {
closeBufferdOutputStream(os);
os = getBufferedOutputStream(
absolutePath(od,
(new File(inFile)).getName() + "_" + String.format(FILE_SEQ_SUFFIX, idx++))
);
isFirstCreateFlg = false;
sizeCnt = 0;
}
os.write(buf,0, ret);
os.flush();
sizeCnt++; // kb
}
closeBufferdOutputStream(os);
closeBufferdInputStream(is);
}
/**
* ファイルを結合
* @param outDir 分割されたファイルがあるディレクトリ
* @throws Exception
*/
public void concat(String outDir) throws Exception {
File od = new File(outDir);
if (!od.exists() || !od.isDirectory()) {
return;
}
String[] fs = od.list(new FilenameFilter(){
public boolean accept(File dir, String name) {
return name.matches("^.*" + FILE_NAME_REP);
}
});
BufferedInputStream is = null;
BufferedOutputStream os = null;
Arrays.sort(fs);
byte[] buf = new byte[BUF_SIZE_1KB];
int ret = -1;
for (int i=0; i<fs.length ;i++) {
if (os == null) {
String originalFileName = absolutePath(od, fs[i].replaceFirst(FILE_NAME_REP, ""));
os = getBufferedOutputStream(originalFileName);
}
is = getBufferedInputStream(absolutePath(od, fs[i]));
while((ret = is.read(buf)) > 0) {
os.write(buf, 0, ret);
os.flush();
}
os.flush();
closeBufferdInputStream(is);
}
closeBufferdOutputStream(os);
}
private String absolutePath(File dir, String filename) {
return dir.getAbsolutePath() + File.separator + filename;
}
private BufferedInputStream getBufferedInputStream(String inputFilename) throws FileNotFoundException {
return new BufferedInputStream(new FileInputStream(new File(inputFilename)));
}
private void closeBufferdOutputStream(BufferedOutputStream os) throws Exception {
if (os != null) {
os.flush();
os.close();
}
}
private void closeBufferdInputStream(BufferedInputStream is) throws Exception {
if (is != null) {
is.close();
}
}
private BufferedOutputStream getBufferedOutputStream(String fineName) throws Exception {
File f = new File(fineName);
f.createNewFile();
return new BufferedOutputStream(new FileOutputStream(f));
}
private File createDir(String dirName) {
File od = new File(dirName);
if (!od.exists()) {
od.mkdir();
}
return od;
}
private static void printUsage() {
StringBuilder buf = new StringBuilder();
buf.append("java split mode target_file output_dir [output_filesize(kb)]\n");
buf.append("\tmode:-s split file, -c concatinate files\n");
buf.append("\ttarget_file:target file to split.\n");
buf.append("\toutput_dir:target directory for output splitted files.\n");
buf.append("\toutput_filesize(kb):output file size as KB.\n");
System.out.println(buf.toString());
}
}
© 2006 矢木浩人
