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