133 lines
3.8 KiB
C#
133 lines
3.8 KiB
C#
//
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// ConditionFunctionExpression.cs
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//
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// Authors:
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// Marek Sieradzki (marek.sieradzki@gmail.com)
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// Marek Safar (marek.safar@gmail.com)
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//
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// (C) 2006 Marek Sieradzki
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// Copyright (c) 2014 Xamarin Inc. (http://www.xamarin.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Reflection;
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using System.Xml;
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namespace Microsoft.Build.BuildEngine {
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internal sealed class ConditionFunctionExpression : ConditionExpression {
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List <ConditionFactorExpression> args;
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string name;
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static readonly Dictionary<string, Func<string, Project, bool>> functions = new Dictionary<string, Func<string, Project, bool>> (StringComparer.OrdinalIgnoreCase) {
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{ "Exists", Exists },
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{ "HasTrailingSlash" , HasTrailingSlash }
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};
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public ConditionFunctionExpression (string name, List <ConditionFactorExpression> args)
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{
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this.args = args;
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this.name = name;
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}
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public override bool BoolEvaluate (Project context)
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{
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Func<string, Project, bool> func;
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if (!functions.TryGetValue (name, out func)) {
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// MSB4091
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throw new Exception (string.Format ("Found a call to an undefined function \"{0}\".", name));
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}
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if (args.Count != 1) {
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// MSB4089
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throw new Exception (string.Format ("Incorrect number of arguments to function in condition \"{0}\". Found {1} argument(s) when expecting {2}.",
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name, args.Count, 1));
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}
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return func (args [0].StringEvaluate (context), context);
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}
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public override float NumberEvaluate (Project context)
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{
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throw new NotSupportedException ();
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}
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public override string StringEvaluate (Project context)
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{
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throw new NotSupportedException ();
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}
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public override bool CanEvaluateToBool (Project context)
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{
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return functions.ContainsKey (name);
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}
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public override bool CanEvaluateToNumber (Project context)
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{
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return false;
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}
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public override bool CanEvaluateToString (Project context)
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{
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return false;
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}
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#pragma warning disable 0169
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#region Functions
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// FIXME imported projects
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static bool Exists (string file, Project context)
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{
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if (string.IsNullOrEmpty (file))
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return false;
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string directory = null;
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if (context.FullFileName != String.Empty)
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directory = Path.GetDirectoryName (context.FullFileName);
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if (!Path.IsPathRooted (file) && directory != null && directory != String.Empty)
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file = Path.Combine (directory, file);
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return File.Exists (file) || Directory.Exists (file);
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}
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static bool HasTrailingSlash (string file, Project context)
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{
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if (file == null)
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return false;
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file = file.Trim ();
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int len = file.Length;
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if (len == 0)
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return false;
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return file [len - 1] == '\\' || file [len - 1] == '/';
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}
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#endregion
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#pragma warning restore 0169
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}
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}
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