Replace Text Example

Part of StandardLibraryCategory

Description

Take the input file and replace one string with another (repeatedly).

Example

import std.stream; /* for File */
import std.string; /* for replace */
import std.stdio;  /* for writefln */



void main(char[][] args)
{
	char[] fromFileStr;
	char[] toFileStr;

	char[] fromStr;
	char[] toStr;

	char[] fileStr;

	char[] lnStr;

	if(args.length < 5)
	{
		writefln(`Usage: replace_text.exe fileIn fileOut "from" "to"` \n);
		return;
	}

	debug writefln("args.length: %s", args.length);
	debug for(int i = 0; i < args.length; i++) writefln("args[%s]: %s", i, args[i]);

	fromFileStr = args[1];
	toFileStr = args[2];
	fromStr = args[3];
	toStr = args[4];

    File inFile = new File(fromFileStr);
    while (!inFile.eof())
    {
        lnStr = inFile.readLine();
		debug writefln("%s", lnStr);
		fileStr ~= lnStr ~ \n;
    }    
    inFile.close();    

	fileStr = replace(fileStr, fromStr, toStr);

    File outFile = new File();
    with(outFile)
    {
        outFile.create(toFileStr);
        outFile.writeString(fileStr);
        outFile.close();    
    }

	return;
}

Batch File

@echo off
dmd ReplaceTextExample.d
ReplaceTextExample.exe
ReplaceTextExample.exe "ReplaceTextExample.d" "ReplaceTextExampleX.d" "Str" "String"
pause

Compatibility Notes

Tested with Digital Mars D Compiler v0.162 on Windows 2000.