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| import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class Eclatement {
private static File destDir;
private static BufferedReader reader;
private static File file;
public static File[] splitFile(String filePath, String toDir)
throws IOException {
handleToDir(toDir);
File[] splittedFiles;
List<File> files = new ArrayList<File>();
reader = new BufferedReader(new FileReader(filePath));
String fileName = new File(filePath).getName();
StringBuffer fileContent = new StringBuffer();
String line;
File currentFile = Eclatement.createSplittedFile(fileName, files
.size());
while ((line = reader.readLine()) != null) {
fileContent.append(line+"\n");
if (line.equals("P*")) {
Eclatement.writeFile(currentFile, fileContent.toString());
//System.out.println(currentFile);
files.add(currentFile);
fileContent = new StringBuffer();
currentFile = Eclatement.createSplittedFile(fileName, files
.size());
}
}
Eclatement.writeFile(currentFile, fileContent.toString());
files.add(currentFile);
splittedFiles = new File[files.size()];
int c=0;
for (int i = 0; i < files.size(); i++) {
setFile(files.get(i));
splittedFiles[c] = files.get(c);
c++;
}
return splittedFiles;
}
/**
* @return the file
*/
public static File getFile() {
return file;
}
/**
* @param file the file to set
*/
public static void setFile(File file) {
Eclatement.file = file;
}
private static void handleToDir(String toDir) {
destDir = new File(toDir);
if (destDir.exists())
destDir.delete();
destDir.mkdir();
}
private static File createSplittedFile(String fileName, int index) {
File file=new File(destDir, fileName); // pas terrible, cette variable destDir statique !!!
String name = file.getName();
int pos = name.lastIndexOf("."); // détection de l'extension
if( pos<0 ) {
// pas d'extension
name += "." + index;
}
else {
name = name.substring(0,pos)+"."+index+name.substring(pos);
}
return new File(file.getParentFile(), name);
}
private static void writeFile(File destFile, String content)
throws IOException {
BufferedWriter writer = new BufferedWriter(new FileWriter(destFile));
writer.write(content);
//System.out.println(content);
writer.flush();
writer.close();
writer = null;
}
public static void main(String[] args) {
try {
// 1048576 = 1Mo
System.out.println(Eclatement.splitFile("C:/Users/user/Desktop/FICHIER.HPR",
"C:/Users/user/Desktop/cible").length
+ " files generated");
} catch (IOException e) {
e.printStackTrace();
}
}
} |
Découpage d'un fichier texte en java.
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La plupart des réponses à vos questions sont déjà dans les 
Envoyé par joel.drigo
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