76 lines
2.3 KiB
C#
76 lines
2.3 KiB
C#
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Microsoft Research Singularity
|
|
//
|
|
// Copyright (c) Microsoft Corporation. All rights reserved.
|
|
//
|
|
// File: Substitute.cs
|
|
//
|
|
// Note:
|
|
//
|
|
|
|
using System;
|
|
using System.IO;
|
|
using System.Text.RegularExpressions;
|
|
|
|
namespace Microsoft.Singularity.Tools
|
|
{
|
|
class Substitute
|
|
{
|
|
static bool unescape = false;
|
|
|
|
private static void Apply(TextReader input,
|
|
TextWriter output,
|
|
string inPattern,
|
|
string outPattern)
|
|
{
|
|
if (unescape)
|
|
outPattern = Regex.Unescape(outPattern);
|
|
|
|
string line;
|
|
while (null != (line = input.ReadLine())) {
|
|
line = Regex.Replace(line, inPattern, outPattern);
|
|
output.WriteLine(line);
|
|
}
|
|
}
|
|
|
|
public static int Main(string[] args)
|
|
{
|
|
int start = 0;
|
|
|
|
int length = args.Length;
|
|
if (length > 0 && String.Equals(args[0], "-e")) {
|
|
unescape = true;
|
|
start = 1;
|
|
}
|
|
|
|
switch (args.Length-start) {
|
|
case 2:
|
|
Apply(Console.In, Console.Out, args[start+0], args[start+1]);
|
|
return 0;
|
|
|
|
case 3:
|
|
using (StreamReader sr = new StreamReader(args[start+2])) {
|
|
Apply(sr, Console.Out, args[start+0], args[start+1]);
|
|
}
|
|
return 0;
|
|
|
|
case 4:
|
|
using (StreamReader sr = new StreamReader(args[start+2])) {
|
|
if (sr.Peek() >= 0) {
|
|
using (StreamWriter sw = new StreamWriter(args[start+3],
|
|
false, sr.CurrentEncoding)) {
|
|
Apply(sr, sw, args[start+0], args[start+1]);
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
|
|
default:
|
|
Console.WriteLine("Usage: substitute [-e] <string1> <string2> [<Input file> [<OutputFile>]]");
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
}
|