I have doubts with the 25-part ...
Quick hack:
<project>
<taskdef name="insert" classname="InsertTask" classpath="."/>
<insert inputfile="orig.txt" outputfile="new.txt" after="5">
The text to be inserted.
Maybe multiple lines?
</insert>
</project>
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.LineNumberReader;
public class InsertTask {
int after;
File inputfile;
File outputfile;
String text = "";
public void execute() {
try {
LineNumberReader inp = new LineNumberReader (new
FileReader(inputfile));
BufferedWriter out = new BufferedWriter(new
FileWriter(outputfile));
String line;
while ((line = inp.readLine()) != null) {
out.write(line);
out.write(System.getProperty("line.separator"));
if (inp.getLineNumber()==after) {
out.write(text);
out.write(System.getProperty("line.separator"));
}
}
inp.close();
out.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
public void addText(String text) {
this.text += text;
}
public void setAfter(int after) {
this.after = after;
}
public void setInputfile(File inputfile) {
this.inputfile = inputfile;
}
public void setOutputfile(File outputfile) {
this.outputfile = outputfile;
}
public static void main(String[] args) {
InsertTask ins = new InsertTask();
ins.setInputfile(new File(args[0]));
ins.setOutputfile(new File(args[1]));
ins.setAfter(Integer.parseInt(args[2]));
for(int i=3; i<args.length; i++) ins.addText(args[i]+" ");
ins.execute();
}
}
Jan
> -----Urspr�ngliche Nachricht-----
> Von: Rebhan, Gilbert [mailto:[EMAIL PROTECTED]
> Gesendet am: Freitag, 28. Januar 2005 12:20
> An: [email protected]
> Betreff: regexp question
>
>
> Hi,
>
> scenario = a txtfile where i have to put a value in.
>
> The line where that value should go is always line number 26 of
> that file. line number 26 is always blank and should contain the
> value after transformation.
>
> I've tried with :
>
> <property name="br" value="${line.separator}" />
> <property name="insert" value="hello world" />
>
>
> <copy file="${txtfile}" tofile="modified.txt">
> <filterchain>
> <tokenfilter>
> <filetokenizer />
> <replaceregex
> pattern="(.*${br}{25})(${br}.*)"
> replace="\1${insert}\2" />
> </tokenfilter>
> </filterchain>
> </copy>
>
> The script runs, but the file stays the same.
> Must be a logical error in the regex syntax.
>
> (.*${br}{25})(\s${br})
>
> group 1 = any sign, one or more, followed by linebreak, 25x
> (= 25 lines)
> group 2 = the next (blank) line
>
> replace \2 = replace group 2 with ${insert}
>
> Where do i go wrong ? Don't know exactly how to write the
> replace part.
> My regexengine is the java builtin (1.4.2_05)
>
> Thanks for any hint !
>
> Gilbert
>
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