mcs/tools/xbuild/SolutionParser.cs

   1 //
   2 // SolutionParser.cs: Generates a project file from a solution file.
   3 //
   4 // Author:
   5 //   Jonathan Chambers (joncham@gmail.com)
   6 //   Ankit Jain <jankit@novell.com>
   7 //   Lluis Sanchez Gual <lluis@novell.com>
   8 //
   9 // (C) 2009 Jonathan Chambers
  10 // Copyright 2008, 2009 Novell, Inc (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30
  31 using System;
  32 using System.Collections.Generic;
  33 using System.Linq;
  34 using System.Text;
  35 using System.Text.RegularExpressions;
  36 using System.IO;
  37 using Microsoft.Build.BuildEngine;
  38
  39 namespace Mono.XBuild.CommandLine {
  40         class ProjectInfo {
  41                 public string Name;
  42                 public string FileName;
  43                 public Guid Guid;
  44
  45                 public ProjectInfo (string name, string fileName)
  46                 {
  47                         Name = name;
  48                         FileName = fileName;
  49                 }
  50
  51                 public Dictionary<TargetInfo, TargetInfo> TargetMap = new Dictionary<TargetInfo, TargetInfo> ();
  52                 public Dictionary<Guid, ProjectInfo> Dependencies = new Dictionary<Guid, ProjectInfo> ();
  53                 public Dictionary<string, ProjectSection> ProjectSections = new Dictionary<string, ProjectSection> ();
  54                 public List<string> AspNetConfigurations = new List<string> ();
  55         }
  56
  57         class ProjectSection {
  58                 public string Name;
  59                 public Dictionary<string, string> Properties = new Dictionary<string, string> ();
  60
  61                 public ProjectSection (string name)
  62                 {
  63                         Name = name;
  64                 }
  65         }
  66
  67         struct TargetInfo {
  68                 public string Configuration;
  69                 public string Platform;
  70                 public bool Build;
  71
  72                 public TargetInfo (string configuration, string platform)
  73                         : this (configuration, platform, false)
  74                 {
  75                 }
  76
  77                 public TargetInfo (string configuration, string platform, bool build)
  78                 {
  79                         Configuration = configuration;
  80                         Platform = platform;
  81                         Build = build;
  82                 }
  83         }
  84
  85
  86         internal delegate void RaiseWarningHandler (int errorNumber, string message);
  87
  88         class SolutionParser {
  89                 static string[] buildTargets = new string[] { "Build", "Clean", "Rebuild", "Publish" };
  90
  91                 static string guidExpression = "{[A-Fa-f0-9]{8}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{12}}";
  92
  93                 static Regex slnVersionRegex = new Regex (@"Microsoft Visual Studio Solution File, Format Version (\d?\d.\d\d)");
  94                 static Regex projectRegex = new Regex ("Project\\(\"(" + guidExpression + ")\"\\) = \"(.*?)\", \"(.*?)\", \"(" + guidExpression + ")\"(\\s*?)((\\s*?)ProjectSection\\((.*?)\\) = (.*?)EndProjectSection(\\s*?))*(\\s*?)(EndProject)?", RegexOptions.Singleline);
  95                 static Regex projectDependenciesRegex = new Regex ("ProjectSection\\((.*?)\\) = \\w*(.*?)EndProjectSection", RegexOptions.Singleline);
  96                 static Regex projectDependencyRegex = new Regex ("\\s*(" + guidExpression + ") = (" + guidExpression + ")");
  97                 static Regex projectSectionPropertiesRegex = new Regex ("\\s*(?<name>.*) = \"(?<value>.*)\"");
  98
  99                 static Regex globalRegex = new Regex ("Global(.*)EndGlobal", RegexOptions.Singleline);
 100                 static Regex globalSectionRegex = new Regex ("GlobalSection\\((.*?)\\) = \\w*(.*?)EndGlobalSection", RegexOptions.Singleline);
 101
 102                 static Regex solutionConfigurationRegex = new Regex ("\\s*(.*?)\\|(.*?) = (.*?)\\|(.+)");
 103                 static Regex projectConfigurationActiveCfgRegex = new Regex ("\\s*(" + guidExpression + ")\\.(.+?)\\|(.+?)\\.ActiveCfg = (.+?)\\|(.+)");
 104                 static Regex projectConfigurationBuildRegex = new Regex ("\\s*(" + guidExpression + ")\\.(.*?)\\|(.*?)\\.Build\\.0 = (.*?)\\|(.+)");
 105
 106                 static string solutionFolderGuid = "{2150E333-8FDC-42A3-9474-1A3956D46DE8}";
 107                 static string vcprojGuid = "{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}";
 108                 static string websiteProjectGuid = "{E24C65DC-7377-472B-9ABA-BC803B73C61A}";
 109
 110                 RaiseWarningHandler RaiseWarning;
 111
 112                 public void ParseSolution (string file, Project p, RaiseWarningHandler RaiseWarning)
 113                 {
 114                         this.RaiseWarning = RaiseWarning;
 115                         EmitBeforeImports (p, file);
 116
 117                         AddGeneralSettings (file, p);
 118
 119                         StreamReader reader = new StreamReader (file);
 120
 121                         string slnVersion = GetSlnFileVersion (reader);
 122
 123                         if (slnVersion == "12.00")
 124 #if XBUILD_12
 125                                 p.DefaultToolsVersion = "12.0";
 126 #else
 127                                 p.DefaultToolsVersion = "4.0";
 128 #endif
 129                         else if (slnVersion == "11.00")
 130                                 p.DefaultToolsVersion = "4.0";
 131                         else if (slnVersion == "10.00")
 132                                 p.DefaultToolsVersion = "3.5";
 133                         else
 134                                 p.DefaultToolsVersion = "2.0";
 135
 136                         string line = reader.ReadToEnd ();
 137                         line = line.Replace ("\r\n", "\n");
 138                         string solutionDir = Path.GetDirectoryName (file);
 139
 140                         List<TargetInfo> solutionTargets = new List<TargetInfo> ();
 141                         Dictionary<Guid, ProjectInfo> projectInfos = new Dictionary<Guid, ProjectInfo> ();
 142                         Dictionary<Guid, ProjectInfo> websiteProjectInfos = new Dictionary<Guid, ProjectInfo> ();
 143                         List<ProjectInfo>[] infosByLevel = null;
 144                         Dictionary<Guid, ProjectInfo> unsupportedProjectInfos = new Dictionary<Guid, ProjectInfo> ();
 145
 146                         Match m = projectRegex.Match (line);
 147                         while (m.Success) {
 148                                 ProjectInfo projectInfo = new ProjectInfo (m.Groups[2].Value,
 149                                                                 Path.GetFullPath (Path.Combine (solutionDir,
 150                                                                         m.Groups [3].Value.Replace ('\\', Path.DirectorySeparatorChar))));
 151                                 if (String.Compare (m.Groups [1].Value, solutionFolderGuid,
 152                                                 StringComparison.InvariantCultureIgnoreCase) == 0) {
 153                                         // Ignore solution folders
 154                                         m = m.NextMatch ();
 155                                         continue;
 156                                 }
 157
 158                                 projectInfo.Guid = new Guid (m.Groups [4].Value);
 159
 160                                 if (String.Compare (m.Groups [1].Value, vcprojGuid,
 161                                                 StringComparison.InvariantCultureIgnoreCase) == 0) {
 162                                         // Ignore vcproj
 163                                         RaiseWarning (0, string.Format("Ignoring vcproj '{0}'.", projectInfo.Name));
 164
 165                                         unsupportedProjectInfos [projectInfo.Guid] = projectInfo;
 166                                         m = m.NextMatch ();
 167                                         continue;
 168                                 }
 169
 170                                 if (String.Compare (m.Groups [1].Value, websiteProjectGuid,
 171                                                 StringComparison.InvariantCultureIgnoreCase) == 0)
 172                                         websiteProjectInfos.Add (new Guid (m.Groups[4].Value), projectInfo);
 173                                 else
 174                                         projectInfos.Add (projectInfo.Guid, projectInfo);
 175
 176                                 Match projectSectionMatch = projectDependenciesRegex.Match (m.Groups[6].Value);
 177                                 while (projectSectionMatch.Success) {
 178                                         string section_name = projectSectionMatch.Groups [1].Value;
 179                                         if (String.Compare (section_name, "ProjectDependencies") == 0) {
 180                                                 Match projectDependencyMatch = projectDependencyRegex.Match (projectSectionMatch.Value);
 181                                                 while (projectDependencyMatch.Success) {
 182                                                         // we might not have projectInfo available right now, so
 183                                                         // set it to null, and fill it in later
 184                                                         projectInfo.Dependencies [new Guid (projectDependencyMatch.Groups[1].Value)] = null;
 185                                                         projectDependencyMatch = projectDependencyMatch.NextMatch ();
 186                                                 }
 187                                         } else {
 188                                                 ProjectSection section = new ProjectSection (section_name);
 189                                                 Match propertiesMatch = projectSectionPropertiesRegex.Match (
 190                                                                         projectSectionMatch.Groups [2].Value);
 191                                                 while (propertiesMatch.Success) {
 192                                                         section.Properties [propertiesMatch.Groups ["name"].Value] =
 193                                                                 propertiesMatch.Groups ["value"].Value;
 194
 195                                                         propertiesMatch = propertiesMatch.NextMatch ();
 196                                                 }
 197
 198                                                 projectInfo.ProjectSections [section_name] = section;
 199                                         }
 200                                         projectSectionMatch = projectSectionMatch.NextMatch ();
 201                                 }
 202                                 m = m.NextMatch ();
 203                         }
 204
 205                         foreach (ProjectInfo projectInfo in projectInfos.Values) {
 206                                 string filename = projectInfo.FileName;
 207                                 string projectDir = Path.GetDirectoryName (filename);
 208
 209                                 if (!File.Exists (filename)) {
 210                                         RaiseWarning (0, String.Format ("Project file {0} referenced in the solution file, " +
 211                                                                 "not found. Ignoring.", filename));
 212                                         continue;
 213                                 }
 214
 215                                 Project currentProject = p.ParentEngine.CreateNewProject ();
 216                                 try {
 217                                         currentProject.Load (filename, ProjectLoadSettings.IgnoreMissingImports);
 218                                 } catch (InvalidProjectFileException e) {
 219                                         RaiseWarning (0, e.Message);
 220                                         continue;
 221                                 }
 222
 223                                 foreach (BuildItem bi in currentProject.GetEvaluatedItemsByName ("ProjectReference")) {
 224                                         ProjectInfo info = null;
 225                                         string projectReferenceGuid = bi.GetEvaluatedMetadata ("Project");
 226                                         bool hasGuid = !String.IsNullOrEmpty (projectReferenceGuid);
 227
 228                                         // try to resolve the ProjectReference by GUID
 229                                         // and fallback to project filename
 230
 231                                         if (hasGuid) {
 232                                                 Guid guid = new Guid (projectReferenceGuid);
 233                                                 projectInfos.TryGetValue (guid, out info);
 234                                                 if (info == null && unsupportedProjectInfos.TryGetValue (guid, out info)) {
 235                                                         RaiseWarning (0, String.Format (
 236                                                                         "{0}: ProjectReference '{1}' is of an unsupported type. Ignoring.",
 237                                                                         filename, bi.Include));
 238                                                         continue;
 239                                                 }
 240                                         }
 241
 242                                         if (info == null || !hasGuid) {
 243                                                 // Project not found by guid or guid not available
 244                                                 // Try to find by project file
 245
 246                                                 string fullpath = Path.GetFullPath (Path.Combine (projectDir, bi.Include.Replace ('\\', Path.DirectorySeparatorChar)));
 247                                                 info = projectInfos.Values.FirstOrDefault (pi => pi.FileName == fullpath);
 248
 249                                                 if (info == null) {
 250                                                         if (unsupportedProjectInfos.Values.Any (pi => pi.FileName == fullpath))
 251                                                                 RaiseWarning (0, String.Format (
 252                                                                                 "{0}: ProjectReference '{1}' is of an unsupported type. Ignoring.",
 253                                                                                 filename, bi.Include));
 254                                                         else
 255                                                                 RaiseWarning (0, String.Format (
 256                                                                                 "{0}: ProjectReference '{1}' not found, neither by guid '{2}' nor by project file name '{3}'.",
 257                                                                                 filename, bi.Include, projectReferenceGuid.Replace ("{", "").Replace ("}", ""), fullpath));
 258                                                 }
 259
 260                                         }
 261
 262                                         if (info != null)
 263                                                 projectInfo.Dependencies [info.Guid] = info;
 264                                 }
 265                         }
 266
 267                         // fill in the project info for deps found in the .sln file
 268                         foreach (ProjectInfo projectInfo in projectInfos.Values) {
 269                                 List<Guid> missingInfos = new List<Guid> ();
 270                                 foreach (KeyValuePair<Guid, ProjectInfo> dependency in projectInfo.Dependencies) {
 271                                         if (dependency.Value == null)
 272                                                 missingInfos.Add (dependency.Key);
 273                                 }
 274
 275                                 foreach (Guid guid in missingInfos) {
 276                                         ProjectInfo info;
 277                                         if (projectInfos.TryGetValue (guid, out info))
 278                                                 projectInfo.Dependencies [guid] = info;
 279                                         else
 280                                                 projectInfo.Dependencies.Remove (guid);
 281                                 }
 282                         }
 283
 284                         Match globalMatch = globalRegex.Match (line);
 285                         Match globalSectionMatch = globalSectionRegex.Match (globalMatch.Groups[1].Value);
 286                         while (globalSectionMatch.Success) {
 287                                 string sectionType = globalSectionMatch.Groups[1].Value;
 288                                 switch (sectionType) {
 289                                         case "SolutionConfigurationPlatforms":
 290                                                 ParseSolutionConfigurationPlatforms (globalSectionMatch.Groups[2].Value, solutionTargets);
 291                                                 break;
 292                                         case "ProjectConfigurationPlatforms":
 293                                                 ParseProjectConfigurationPlatforms (globalSectionMatch.Groups[2].Value,
 294                                                                 projectInfos, websiteProjectInfos);
 295                                                 break;
 296                                         case "SolutionProperties":
 297                                                 ParseSolutionProperties (globalSectionMatch.Groups[2].Value);
 298                                                 break;
 299                                         case "NestedProjects":
 300                                                 break;
 301                                         case "MonoDevelopProperties":
 302                                                 break;
 303                                         default:
 304                                                 RaiseWarning (0, string.Format("Don't know how to handle GlobalSection {0}, Ignoring.", sectionType));
 305                                                 break;
 306                                 }
 307                                 globalSectionMatch = globalSectionMatch.NextMatch ();
 308                         }
 309
 310                         int num_levels = AddBuildLevels (p, solutionTargets, projectInfos, ref infosByLevel);
 311
 312                         AddCurrentSolutionConfigurationContents (p, solutionTargets, projectInfos, websiteProjectInfos);
 313                         AddProjectReferences (p, projectInfos);
 314                         AddWebsiteProperties (p, websiteProjectInfos, projectInfos);
 315                         AddValidateSolutionConfiguration (p);
 316
 317                         EmitAfterImports (p, file);
 318
 319                         AddGetFrameworkPathTarget (p);
 320                         AddWebsiteTargets (p, websiteProjectInfos, projectInfos, infosByLevel, solutionTargets);
 321                         AddProjectTargets (p, solutionTargets, projectInfos);
 322                         AddSolutionTargets (p, num_levels, websiteProjectInfos.Values);
 323                 }
 324
 325                 string GetSlnFileVersion (StreamReader reader)
 326                 {
 327                         string strInput = null;
 328                         Match match;
 329
 330                         strInput = reader.ReadLine();
 331                         if (strInput == null)
 332                                 return null;
 333
 334                         match = slnVersionRegex.Match(strInput);
 335                         if (!match.Success) {
 336                                 strInput = reader.ReadLine();
 337                                 if (strInput == null)
 338                                         return null;
 339                                 match = slnVersionRegex.Match (strInput);
 340                         }
 341
 342                         if (match.Success)
 343                                 return match.Groups[1].Value;
 344
 345                         return null;
 346                 }
 347
 348                 void EmitBeforeImports (Project p, string file)
 349                 {
 350 #if NET_4_0
 351                         p.AddNewImport ("$(MSBuildExtensionsPath)\\$(MSBuildToolsVersion)\\SolutionFile\\ImportBefore\\*",
 352                                         "'$(ImportByWildcardBeforeSolution)' != 'false' and " +
 353                                         "Exists('$(MSBuildExtensionsPath)\\$(MSBuildToolsVersion)\\SolutionFile\\ImportBefore')");
 354 #endif
 355
 356                         string before_filename = Path.Combine (Path.GetDirectoryName (file), "before." + Path.GetFileName (file) + ".targets");
 357                         p.AddNewImport (before_filename, String.Format ("Exists ('{0}')", before_filename));
 358                 }
 359
 360                 void EmitAfterImports (Project p, string file)
 361                 {
 362 #if NET_4_0
 363                         p.AddNewImport ("$(MSBuildExtensionsPath)\\$(MSBuildToolsVersion)\\SolutionFile\\ImportAfter\\*",
 364                                         "'$(ImportByWildcardAfterSolution)' != 'false' and " +
 365                                         "Exists('$(MSBuildExtensionsPath)\\$(MSBuildToolsVersion)\\SolutionFile\\ImportAfter')");
 366 #endif
 367
 368                         string after_filename = Path.Combine (Path.GetDirectoryName (file), "after." + Path.GetFileName (file) + ".targets");
 369                         p.AddNewImport (after_filename, String.Format ("Exists ('{0}')", after_filename));
 370                 }
 371
 372                 void AddGeneralSettings (string solutionFile, Project p)
 373                 {
 374                         p.DefaultTargets = "Build";
 375                         p.InitialTargets = "ValidateSolutionConfiguration";
 376                         p.AddNewUsingTaskFromAssemblyName ("CreateTemporaryVCProject", "Microsoft.Build.Tasks, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a");
 377                         p.AddNewUsingTaskFromAssemblyName ("ResolveVCProjectOutput", "Microsoft.Build.Tasks, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a");
 378
 379                         string solutionFilePath = Path.GetFullPath (solutionFile);
 380                         BuildPropertyGroup solutionPropertyGroup = p.AddNewPropertyGroup (true);
 381                         solutionPropertyGroup.AddNewProperty ("SolutionDir", Path.GetDirectoryName (solutionFilePath) + Path.DirectorySeparatorChar);
 382                         solutionPropertyGroup.AddNewProperty ("SolutionExt", Path.GetExtension (solutionFile));
 383                         solutionPropertyGroup.AddNewProperty ("SolutionFileName", Path.GetFileName (solutionFile));
 384                         solutionPropertyGroup.AddNewProperty ("SolutionName", Path.GetFileNameWithoutExtension (solutionFile));
 385                         solutionPropertyGroup.AddNewProperty ("SolutionPath", solutionFilePath);
 386                 }
 387
 388                 void ParseSolutionConfigurationPlatforms (string section, List<TargetInfo> solutionTargets)
 389                 {
 390                         Match solutionConfigurationPlatform = solutionConfigurationRegex.Match (section);
 391                         while (solutionConfigurationPlatform.Success) {
 392                                 string solutionConfiguration = solutionConfigurationPlatform.Groups[1].Value;
 393                                 string solutionPlatform = solutionConfigurationPlatform.Groups[2].Value;
 394                                 solutionTargets.Add (new TargetInfo (solutionConfiguration, solutionPlatform));
 395                                 solutionConfigurationPlatform = solutionConfigurationPlatform.NextMatch ();
 396                         }
 397                 }
 398
 399                 // ignores the website projects, in the websiteProjectInfos
 400                 void ParseProjectConfigurationPlatforms (string section, Dictionary<Guid, ProjectInfo> projectInfos,
 401                                 Dictionary<Guid, ProjectInfo> websiteProjectInfos)
 402                 {
 403                         List<Guid> missingGuids = new List<Guid> ();
 404                         Match projectConfigurationPlatform = projectConfigurationActiveCfgRegex.Match (section);
 405                         while (projectConfigurationPlatform.Success) {
 406                                 Guid guid = new Guid (projectConfigurationPlatform.Groups[1].Value);
 407                                 ProjectInfo projectInfo;
 408                                 if (!projectInfos.TryGetValue (guid, out projectInfo)) {
 409                                         if (!missingGuids.Contains (guid)) {
 410                                                 if (!websiteProjectInfos.ContainsKey (guid))
 411                                                         // ignore website projects
 412                                                         RaiseWarning (0, string.Format("Failed to find project {0}", guid));
 413                                                 missingGuids.Add (guid);
 414                                         }
 415                                         projectConfigurationPlatform = projectConfigurationPlatform.NextMatch ();
 416                                         continue;
 417                                 }
 418                                 string solConf = projectConfigurationPlatform.Groups[2].Value;
 419                                 string solPlat = projectConfigurationPlatform.Groups[3].Value;
 420                                 string projConf = projectConfigurationPlatform.Groups[4].Value;
 421                                 string projPlat = projectConfigurationPlatform.Groups[5].Value;
 422                                 // hack, what are they doing here?
 423                                 if (projPlat == "Any CPU")
 424                                         projPlat = "AnyCPU";
 425                                 projectInfo.TargetMap.Add (new TargetInfo (solConf, solPlat), new TargetInfo (projConf, projPlat));
 426                                 projectConfigurationPlatform = projectConfigurationPlatform.NextMatch ();
 427                         }
 428                         Match projectConfigurationPlatformBuild = projectConfigurationBuildRegex.Match (section);
 429                         while (projectConfigurationPlatformBuild.Success) {
 430                                 Guid guid = new Guid (projectConfigurationPlatformBuild.Groups[1].Value);
 431                                 ProjectInfo projectInfo;
 432                                 if (!projectInfos.TryGetValue (guid, out projectInfo)) {
 433                                         if (!missingGuids.Contains (guid)) {
 434                                                 RaiseWarning (0, string.Format("Failed to find project {0}", guid));
 435                                                 missingGuids.Add (guid);
 436                                         }
 437                                         projectConfigurationPlatformBuild = projectConfigurationPlatformBuild.NextMatch ();
 438                                         continue;
 439                                 }
 440                                 string solConf = projectConfigurationPlatformBuild.Groups[2].Value;
 441                                 string solPlat = projectConfigurationPlatformBuild.Groups[3].Value;
 442                                 string projConf = projectConfigurationPlatformBuild.Groups[4].Value;
 443                                 string projPlat = projectConfigurationPlatformBuild.Groups[5].Value;
 444                                 // hack, what are they doing here?
 445                                 if (projPlat == "Any CPU")
 446                                         projPlat = "AnyCPU";
 447                                 projectInfo.TargetMap[new TargetInfo (solConf, solPlat)] = new TargetInfo (projConf, projPlat, true);
 448                                 projectConfigurationPlatformBuild = projectConfigurationPlatformBuild.NextMatch ();
 449                         }
 450                 }
 451
 452                 void ParseSolutionProperties (string section)
 453                 {
 454                 }
 455
 456                 void AddCurrentSolutionConfigurationContents (Project p, List<TargetInfo> solutionTargets,
 457                                 Dictionary<Guid, ProjectInfo> projectInfos,
 458                                 Dictionary<Guid, ProjectInfo> websiteProjectInfos)
 459                 {
 460                         TargetInfo default_target_info = new TargetInfo ("Debug", "Any CPU");
 461                         if (solutionTargets.Count > 0) {
 462                                 bool found = false;
 463                                 foreach (TargetInfo tinfo in solutionTargets) {
 464                                         if (String.Compare (tinfo.Platform, "Mixed Platforms") == 0) {
 465                                                 default_target_info = tinfo;
 466                                                 found = true;
 467                                                 break;
 468                                         }
 469                                 }
 470
 471                                 if (!found)
 472                                         default_target_info = solutionTargets [0];
 473                         }
 474
 475                         AddDefaultSolutionConfiguration (p, default_target_info);
 476
 477                         foreach (TargetInfo solutionTarget in solutionTargets) {
 478                                 BuildPropertyGroup platformPropertyGroup = p.AddNewPropertyGroup (false);
 479                                 platformPropertyGroup.Condition = string.Format (
 480                                         " ('$(Configuration)' == '{0}') and ('$(Platform)' == '{1}') ",
 481                                         solutionTarget.Configuration,
 482                                         solutionTarget.Platform
 483                                         );
 484
 485                                 StringBuilder solutionConfigurationContents = new StringBuilder ();
 486                                 solutionConfigurationContents.Append ("<SolutionConfiguration xmlns=\"\">");
 487                                 foreach (KeyValuePair<Guid, ProjectInfo> projectInfo in projectInfos) {
 488                                         AddProjectConfigurationItems (projectInfo.Key, projectInfo.Value, solutionTarget, solutionConfigurationContents);
 489                                 }
 490                                 solutionConfigurationContents.Append ("</SolutionConfiguration>");
 491
 492                                 platformPropertyGroup.AddNewProperty ("CurrentSolutionConfigurationContents",
 493                                                 solutionConfigurationContents.ToString ());
 494                         }
 495                 }
 496
 497                 void AddProjectReferences (Project p, Dictionary<Guid, ProjectInfo> projectInfos)
 498                 {
 499                         BuildItemGroup big = p.AddNewItemGroup ();
 500                         foreach (KeyValuePair<Guid, ProjectInfo> pair in projectInfos)
 501                                 big.AddNewItem ("ProjectReference", pair.Value.FileName);
 502                 }
 503
 504                 void AddProjectConfigurationItems (Guid guid, ProjectInfo projectInfo, TargetInfo solutionTarget,
 505                                 StringBuilder solutionConfigurationContents)
 506                 {
 507                         foreach (KeyValuePair<TargetInfo, TargetInfo> targetInfo in projectInfo.TargetMap) {
 508                                 if (solutionTarget.Configuration == targetInfo.Key.Configuration &&
 509                                                 solutionTarget.Platform == targetInfo.Key.Platform) {
 510                                         solutionConfigurationContents.AppendFormat (
 511                                                         "<ProjectConfiguration Project=\"{0}\">{1}|{2}</ProjectConfiguration>",
 512                                         guid.ToString ("B").ToUpper (), targetInfo.Value.Configuration, targetInfo.Value.Platform);
 513                                 }
 514                         }
 515                 }
 516
 517                 void AddDefaultSolutionConfiguration (Project p, TargetInfo target)
 518                 {
 519                         BuildPropertyGroup configurationPropertyGroup = p.AddNewPropertyGroup (true);
 520                         configurationPropertyGroup.Condition = " '$(Configuration)' == '' ";
 521                         configurationPropertyGroup.AddNewProperty ("Configuration", target.Configuration);
 522
 523                         BuildPropertyGroup platformPropertyGroup = p.AddNewPropertyGroup (true);
 524                         platformPropertyGroup.Condition = " '$(Platform)' == '' ";
 525                         platformPropertyGroup.AddNewProperty ("Platform", target.Platform);
 526
 527                         // emit default for AspNetConfiguration also
 528                         BuildPropertyGroup aspNetConfigurationPropertyGroup = p.AddNewPropertyGroup (true);
 529                         aspNetConfigurationPropertyGroup.Condition = " ('$(AspNetConfiguration)' == '') ";
 530                         aspNetConfigurationPropertyGroup.AddNewProperty ("AspNetConfiguration", "$(Configuration)");
 531                 }
 532
 533                 void AddWarningForMissingProjectConfiguration (Target target, string slnConfig, string slnPlatform, string projectName)
 534                 {
 535                         BuildTask task = target.AddNewTask ("Warning");
 536                         task.SetParameterValue ("Text",
 537                                         String.Format ("The project configuration for project '{0}' corresponding " +
 538                                                 "to the solution configuration '{1}|{2}' was not found in the solution file.",
 539                                                 projectName, slnConfig, slnPlatform));
 540                         task.Condition = String.Format ("('$(Configuration)' == '{0}') and ('$(Platform)' == '{1}')",
 541                                                 slnConfig, slnPlatform);
 542
 543                 }
 544
 545                 // Website project methods
 546
 547                 void AddWebsiteProperties (Project p, Dictionary<Guid, ProjectInfo> websiteProjectInfos,
 548                                 Dictionary<Guid, ProjectInfo> projectInfos)
 549                 {
 550                         var propertyGroupByConfig = new Dictionary<string, BuildPropertyGroup> ();
 551                         foreach (KeyValuePair<Guid, ProjectInfo> infoPair in websiteProjectInfos) {
 552                                 ProjectInfo info = infoPair.Value;
 553                                 string projectGuid = infoPair.Key.ToString ();
 554
 555                                 ProjectSection section;
 556                                 if (!info.ProjectSections.TryGetValue ("WebsiteProperties", out section)) {
 557                                         RaiseWarning (0, String.Format ("Website project '{0}' does not have the required project section: WebsiteProperties. Ignoring project.", info.Name));
 558                                         return;
 559                                 }
 560
 561                                 //parse project references
 562                                 string [] ref_guids = null;
 563                                 string references;
 564                                 if (section.Properties.TryGetValue ("ProjectReferences", out references)) {
 565                                         ref_guids = references.Split (new char [] {';'}, StringSplitOptions.RemoveEmptyEntries);
 566                                         for (int i = 0; i < ref_guids.Length; i ++) {
 567                                                 // "{guid}|foo.dll"
 568                                                 ref_guids [i] = ref_guids [i].Split ('|') [0];
 569
 570                                                 Guid r_guid = new Guid (ref_guids [i]);
 571                                                 ProjectInfo ref_info;
 572                                                 if (projectInfos.TryGetValue (r_guid, out ref_info))
 573                                                         // ignore if not found
 574                                                         info.Dependencies [r_guid] = ref_info;
 575                                         }
 576                                 }
 577
 578                                 foreach (KeyValuePair<string, string> pair in section.Properties) {
 579                                         //looking for -- ConfigName.AspNetCompiler.PropName
 580                                         string [] parts = pair.Key.Split ('.');
 581                                         if (parts.Length != 3 || String.Compare (parts [1], "AspNetCompiler") != 0)
 582                                                 continue;
 583
 584                                         string config = parts [0];
 585                                         string propertyName = parts [2];
 586
 587                                         BuildPropertyGroup bpg;
 588                                         if (!propertyGroupByConfig.TryGetValue (config, out bpg)) {
 589                                                 bpg = p.AddNewPropertyGroup (true);
 590                                                 bpg.Condition = String.Format (" '$(AspNetConfiguration)' == '{0}' ", config);
 591                                                 propertyGroupByConfig [config] = bpg;
 592                                         }
 593
 594                                         bpg.AddNewProperty (String.Format ("Project_{0}_AspNet{1}", projectGuid, propertyName),
 595                                                                 pair.Value);
 596
 597                                         if (!info.AspNetConfigurations.Contains (config))
 598                                                 info.AspNetConfigurations.Add (config);
 599                                 }
 600                         }
 601                 }
 602
 603                 // For WebSite projects
 604                 // The main "Build" target:
 605                 //      1. builds all non-website projects
 606                 //      2. calls target for website project
 607                 //              - gets target path for the referenced projects
 608                 //              - Resolves dependencies, satellites etc for the
 609                 //                referenced project assemblies, and copies them
 610                 //                to bin/ folder
 611                 void AddWebsiteTargets (Project p, Dictionary<Guid, ProjectInfo> websiteProjectInfos,
 612                                 Dictionary<Guid, ProjectInfo> projectInfos, List<ProjectInfo>[] infosByLevel,
 613                                 List<TargetInfo> solutionTargets)
 614                 {
 615                         foreach (ProjectInfo w_info in websiteProjectInfos.Values) {
 616                                 // gets a linear list of dependencies
 617                                 List<ProjectInfo> depInfos = new List<ProjectInfo> ();
 618                                 foreach (List<ProjectInfo> pinfos in infosByLevel) {
 619                                         foreach (ProjectInfo pinfo in pinfos)
 620                                                 if (w_info.Dependencies.ContainsKey (pinfo.Guid))
 621                                                         depInfos.Add (pinfo);
 622                                 }
 623
 624                                 foreach (string buildTarget in new string [] {"Build", "Rebuild"})
 625                                         AddWebsiteTarget (p, w_info, projectInfos, depInfos, solutionTargets, buildTarget);
 626
 627                                 // clean/publish are not supported for website projects
 628                                 foreach (string buildTarget in new string [] {"Clean", "Publish"})
 629                                         AddWebsiteUnsupportedTarget (p, w_info, depInfos, buildTarget);
 630                         }
 631                 }
 632
 633                 void AddWebsiteTarget (Project p, ProjectInfo webProjectInfo,
 634                                 Dictionary<Guid, ProjectInfo> projectInfos, List<ProjectInfo> depInfos,
 635                                 List<TargetInfo> solutionTargets, string buildTarget)
 636                 {
 637                         string w_guid = webProjectInfo.Guid.ToString ().ToUpper ();
 638
 639                         Target target = p.Targets.AddNewTarget (GetTargetNameForProject (webProjectInfo.Name, buildTarget));
 640                         target.Condition = "'$(CurrentSolutionConfigurationContents)' != ''";
 641                         target.DependsOnTargets = GetWebsiteDependsOnTarget (depInfos, buildTarget);
 642
 643                         // this item collects all the references
 644                         string final_ref_item = String.Format ("Project_{0}_References{1}", w_guid,
 645                                                         buildTarget != "Build" ? "_" + buildTarget : String.Empty);
 646
 647                         foreach (TargetInfo targetInfo in solutionTargets) {
 648                                 int ref_num = 0;
 649                                 foreach (ProjectInfo depInfo in depInfos) {
 650                                         TargetInfo projectTargetInfo;
 651                                         if (!depInfo.TargetMap.TryGetValue (targetInfo, out projectTargetInfo))
 652                                                 // Ignore, no config, so no target path
 653                                                 continue;
 654
 655                                         // GetTargetPath from the referenced project
 656                                         AddWebsiteMSBuildTaskForReference (target, depInfo, projectTargetInfo, targetInfo,
 657                                                         final_ref_item, ref_num);
 658                                         ref_num ++;
 659                                 }
 660                         }
 661
 662                         // resolve the references
 663                         AddWebsiteResolveAndCopyReferencesTasks (target, webProjectInfo, final_ref_item, w_guid);
 664                 }
 665
 666                 // emits the MSBuild task to GetTargetPath for the referenced project
 667                 void AddWebsiteMSBuildTaskForReference (Target target, ProjectInfo depInfo, TargetInfo projectTargetInfo,
 668                                 TargetInfo solutionTargetInfo, string final_ref_item, int ref_num)
 669                 {
 670                         BuildTask task = target.AddNewTask ("MSBuild");
 671                         task.SetParameterValue ("Projects", depInfo.FileName);
 672                         task.SetParameterValue ("Targets", "GetTargetPath");
 673
 674                         task.SetParameterValue ("Properties", string.Format ("Configuration={0}; Platform={1}; BuildingSolutionFile=true; CurrentSolutionConfigurationContents=$(CurrentSolutionConfigurationContents); SolutionDir=$(SolutionDir); SolutionExt=$(SolutionExt); SolutionFileName=$(SolutionFileName); SolutionName=$(SolutionName); SolutionPath=$(SolutionPath)", projectTargetInfo.Configuration, projectTargetInfo.Platform));
 675                         task.Condition = string.Format (" ('$(Configuration)' == '{0}') and ('$(Platform)' == '{1}') ", solutionTargetInfo.Configuration, solutionTargetInfo.Platform);
 676
 677                         string ref_item = String.Format ("{0}_{1}",
 678                                                 final_ref_item, ref_num);
 679
 680                         task.AddOutputItem ("TargetOutputs", ref_item);
 681
 682                         task = target.AddNewTask ("CreateItem");
 683                         task.SetParameterValue ("Include", String.Format ("@({0})", ref_item));
 684                         task.SetParameterValue ("AdditionalMetadata", String.Format ("Guid={{{0}}}",
 685                                                 depInfo.Guid.ToString ().ToUpper ()));
 686                         task.AddOutputItem ("Include", final_ref_item);
 687                 }
 688
 689                 void AddWebsiteResolveAndCopyReferencesTasks (Target target, ProjectInfo webProjectInfo,
 690                                 string final_ref_item, string w_guid)
 691                 {
 692                         BuildTask task = target.AddNewTask ("ResolveAssemblyReference");
 693                         task.SetParameterValue ("Assemblies", String.Format ("@({0}->'%(FullPath)')", final_ref_item));
 694                         task.SetParameterValue ("TargetFrameworkDirectories", "$(TargetFrameworkPath)");
 695                         task.SetParameterValue ("SearchPaths", "{RawFileName};{TargetFrameworkDirectory};{GAC}");
 696                         task.SetParameterValue ("FindDependencies", "true");
 697                         task.SetParameterValue ("FindSatellites", "true");
 698                         task.SetParameterValue ("FindRelatedFiles", "true");
 699                         task.Condition = String.Format ("Exists ('%({0}.Identity)')", final_ref_item);
 700
 701                         string copylocal_item = String.Format ("{0}_CopyLocalFiles", final_ref_item);
 702                         task.AddOutputItem ("CopyLocalFiles", copylocal_item);
 703
 704                         // Copy the references
 705                         task = target.AddNewTask ("Copy");
 706                         task.SetParameterValue ("SourceFiles", String.Format ("@({0})", copylocal_item));
 707                         task.SetParameterValue ("DestinationFiles", String.Format (
 708                                                 "@({0}->'$(Project_{1}_AspNetPhysicalPath)\\Bin\\%(DestinationSubDirectory)%(Filename)%(Extension)')",
 709                                                 copylocal_item, w_guid));
 710
 711                         // AspNetConfiguration, is config for the website project, useful
 712                         // for overriding from command line
 713                         StringBuilder cond = new StringBuilder ();
 714                         foreach (string config in webProjectInfo.AspNetConfigurations) {
 715                                 if (cond.Length > 0)
 716                                         cond.Append (" or ");
 717                                 cond.AppendFormat (" ('$(AspNetConfiguration)' == '{0}') ", config);
 718                         }
 719                         task.Condition = cond.ToString ();
 720
 721                         task = target.AddNewTask ("Message");
 722                         cond = new StringBuilder ();
 723                         foreach (string config in webProjectInfo.AspNetConfigurations) {
 724                                 if (cond.Length > 0)
 725                                         cond.Append (" and ");
 726                                 cond.AppendFormat (" ('$(AspNetConfiguration)' != '{0}') ", config);
 727                         }
 728                         task.Condition = cond.ToString ();
 729                         task.SetParameterValue ("Text", "Skipping as the '$(AspNetConfiguration)' configuration is " +
 730                                                 "not supported by this website project.");
 731                 }
 732
 733                 void AddWebsiteUnsupportedTarget (Project p, ProjectInfo webProjectInfo, List<ProjectInfo> depInfos,
 734                                 string buildTarget)
 735                 {
 736                         Target target = p.Targets.AddNewTarget (GetTargetNameForProject (webProjectInfo.Name, buildTarget));
 737                         target.DependsOnTargets = GetWebsiteDependsOnTarget (depInfos, buildTarget);
 738
 739                         BuildTask task = target.AddNewTask ("Message");
 740                         task.SetParameterValue ("Text", String.Format (
 741                                                 "Target '{0}' not support for website projects", buildTarget));
 742                 }
 743
 744                 string GetWebsiteDependsOnTarget (List<ProjectInfo> depInfos, string buildTarget)
 745                 {
 746                         StringBuilder deps = new StringBuilder ();
 747                         foreach (ProjectInfo pinfo in depInfos) {
 748                                 if (deps.Length > 0)
 749                                         deps.Append (";");
 750                                 deps.Append (GetTargetNameForProject (pinfo.Name, buildTarget));
 751                         }
 752                         deps.Append (";GetFrameworkPath");
 753                         return deps.ToString ();
 754                 }
 755
 756                 void AddGetFrameworkPathTarget (Project p)
 757                 {
 758                         Target t = p.Targets.AddNewTarget ("GetFrameworkPath");
 759                         BuildTask task = t.AddNewTask ("GetFrameworkPath");
 760                         task.AddOutputProperty ("Path", "TargetFrameworkPath");
 761                 }
 762
 763                 void AddValidateSolutionConfiguration (Project p)
 764                 {
 765                         Target t = p.Targets.AddNewTarget ("ValidateSolutionConfiguration");
 766                         BuildTask task = t.AddNewTask ("Warning");
 767                         task.SetParameterValue ("Text", "On windows, an environment variable 'Platform' is set to MCD sometimes, and this overrides the Platform property" +
 768                                                 " for xbuild, which could be an invalid Platform for this solution file. And so you are getting the following error." +
 769                                                 " You could override it by either setting the environment variable to nothing, as\n" +
 770                                                 "   set Platform=\n" +
 771                                                 "Or explicity specify its value on the command line, as\n" +
 772                                                 "   xbuild Foo.sln /p:Platform=Release");
 773                         task.Condition = "('$(CurrentSolutionConfigurationContents)' == '') and ('$(SkipInvalidConfigurations)' != 'true')" +
 774                                         " and '$(Platform)' == 'MCD' and '$(OS)' == 'Windows_NT'";
 775
 776                         task = t.AddNewTask ("Error");
 777                         task.SetParameterValue ("Text", "Invalid solution configuration and platform: \"$(Configuration)|$(Platform)\".");
 778                         task.Condition = "('$(CurrentSolutionConfigurationContents)' == '') and ('$(SkipInvalidConfigurations)' != 'true')";
 779                         task = t.AddNewTask ("Warning");
 780                         task.SetParameterValue ("Text", "Invalid solution configuration and platform: \"$(Configuration)|$(Platform)\".");
 781                         task.Condition = "('$(CurrentSolutionConfigurationContents)' == '') and ('$(SkipInvalidConfigurations)' == 'true')";
 782                         task = t.AddNewTask ("Message");
 783                         task.SetParameterValue ("Text", "Building solution configuration \"$(Configuration)|$(Platform)\".");
 784                         task.Condition = "'$(CurrentSolutionConfigurationContents)' != ''";
 785                 }
 786
 787                 void AddProjectTargets (Project p, List<TargetInfo> solutionTargets, Dictionary<Guid, ProjectInfo> projectInfos)
 788                 {
 789                         foreach (KeyValuePair<Guid, ProjectInfo> projectInfo in projectInfos) {
 790                                 ProjectInfo project = projectInfo.Value;
 791                                 foreach (string buildTarget in buildTargets) {
 792                                         string target_name = GetTargetNameForProject (project.Name, buildTarget);
 793                                         bool is_build_or_rebuild = buildTarget == "Build" || buildTarget == "Rebuild";
 794                                         Target target = p.Targets.AddNewTarget (target_name);
 795                                         target.Condition = "'$(CurrentSolutionConfigurationContents)' != ''";
 796
 797                                         if (is_build_or_rebuild)
 798                                                 target.Outputs = "@(CollectedBuildOutput)";
 799                                         if (project.Dependencies.Count > 0)
 800                                                 target.DependsOnTargets = String.Join (";",
 801                                                                 project.Dependencies.Values.Select (
 802                                                                         di => GetTargetNameForProject (di.Name, buildTarget)).ToArray ());
 803
 804                                         foreach (TargetInfo targetInfo in solutionTargets) {
 805                                                 BuildTask task = null;
 806                                                 TargetInfo projectTargetInfo;
 807                                                 if (!project.TargetMap.TryGetValue (targetInfo, out projectTargetInfo)) {
 808                                                         AddWarningForMissingProjectConfiguration (target, targetInfo.Configuration,
 809                                                                         targetInfo.Platform, project.Name);
 810                                                         continue;
 811                                                 }
 812                                                 if (projectTargetInfo.Build) {
 813                                                         task = target.AddNewTask ("MSBuild");
 814                                                         task.SetParameterValue ("Projects", project.FileName);
 815                                                         task.SetParameterValue ("ToolsVersion", "$(ProjectToolsVersion)");
 816                                                         if (is_build_or_rebuild)
 817                                                                 task.AddOutputItem ("TargetOutputs", "CollectedBuildOutput");
 818
 819                                                         if (buildTarget != "Build")
 820                                                                 task.SetParameterValue ("Targets", buildTarget);
 821                                                         task.SetParameterValue ("Properties", string.Format ("Configuration={0}; Platform={1}; BuildingSolutionFile=true; CurrentSolutionConfigurationContents=$(CurrentSolutionConfigurationContents); SolutionDir=$(SolutionDir); SolutionExt=$(SolutionExt); SolutionFileName=$(SolutionFileName); SolutionName=$(SolutionName); SolutionPath=$(SolutionPath)", projectTargetInfo.Configuration, projectTargetInfo.Platform));
 822                                                 } else {
 823                                                         task = target.AddNewTask ("Message");
 824                                                         task.SetParameterValue ("Text", string.Format ("Project \"{0}\" is disabled for solution configuration \"{1}|{2}\".", project.Name, targetInfo.Configuration, targetInfo.Platform));
 825                                                 }
 826                                                 task.Condition = string.Format (" ('$(Configuration)' == '{0}') and ('$(Platform)' == '{1}') ", targetInfo.Configuration, targetInfo.Platform);
 827                                         }
 828                                 }
 829                         }
 830                 }
 831
 832
 833                 string GetTargetNameForProject (string projectName, string buildTarget)
 834                 {
 835                         //FIXME: hack
 836                         projectName = projectName.Replace ("\\", "/").Replace (".", "_");
 837                         string target_name = projectName +
 838                                         (buildTarget == "Build" ? string.Empty : ":" + buildTarget);
 839
 840                         if (IsBuildTargetName (projectName))
 841                                 target_name = "Solution:" + target_name;
 842
 843                         return target_name;
 844                 }
 845
 846                 bool IsBuildTargetName (string name)
 847                 {
 848                         foreach (string tgt in buildTargets)
 849                                 if (name == tgt)
 850                                         return true;
 851                         return false;
 852                 }
 853
 854                 // returns number of levels
 855                 int AddBuildLevels (Project p, List<TargetInfo> solutionTargets, Dictionary<Guid, ProjectInfo> projectInfos,
 856                                 ref List<ProjectInfo>[] infosByLevel)
 857                 {
 858                         infosByLevel = TopologicalSort<ProjectInfo> (projectInfos.Values);
 859
 860                         foreach (TargetInfo targetInfo in solutionTargets) {
 861                                 BuildItemGroup big = p.AddNewItemGroup ();
 862                                 big.Condition = String.Format (" ('$(Configuration)' == '{0}') and ('$(Platform)' == '{1}') ",
 863                                                 targetInfo.Configuration, targetInfo.Platform);
 864
 865                                 //FIXME: every level has projects that can be built in parallel.
 866                                 //       levels are ordered on the basis of the dependency graph
 867
 868                                 for (int i = 0; i < infosByLevel.Length; i ++) {
 869                                         string build_level = String.Format ("BuildLevel{0}", i);
 870                                         string skip_level = String.Format ("SkipLevel{0}", i);
 871                                         string missing_level = String.Format ("MissingConfigLevel{0}", i);
 872
 873                                         foreach (ProjectInfo projectInfo in infosByLevel [i]) {
 874                                                 TargetInfo projectTargetInfo;
 875                                                 if (!projectInfo.TargetMap.TryGetValue (targetInfo, out projectTargetInfo)) {
 876                                                         // missing project config
 877                                                         big.AddNewItem (missing_level, projectInfo.Name);
 878                                                         continue;
 879                                                 }
 880
 881                                                 if (projectTargetInfo.Build) {
 882                                                         BuildItem item = big.AddNewItem (build_level, projectInfo.FileName);
 883                                                         item.SetMetadata ("Configuration", projectTargetInfo.Configuration);
 884                                                         item.SetMetadata ("Platform", projectTargetInfo.Platform);
 885                                                 } else {
 886                                                         // build disabled
 887                                                         big.AddNewItem (skip_level, projectInfo.Name);
 888                                                 }
 889                                         }
 890                                 }
 891                         }
 892
 893                         return infosByLevel.Length;
 894                 }
 895
 896                 void AddSolutionTargets (Project p, int num_levels, IEnumerable<ProjectInfo> websiteProjectInfos)
 897                 {
 898                         foreach (string buildTarget in buildTargets) {
 899                                 Target t = p.Targets.AddNewTarget (buildTarget);
 900                                 bool is_build_or_rebuild = buildTarget == "Build" || buildTarget == "Rebuild";
 901
 902                                 t.Condition = "'$(CurrentSolutionConfigurationContents)' != ''";
 903                                 if (is_build_or_rebuild)
 904                                         t.Outputs = "@(CollectedBuildOutput)";
 905
 906                                 BuildTask task = null;
 907                                 for (int i = 0; i < num_levels; i ++) {
 908                                         string level_str = String.Format ("BuildLevel{0}", i);
 909                                         task = t.AddNewTask ("MSBuild");
 910                                         task.SetParameterValue ("Condition", String.Format ("'@({0})' != ''", level_str));
 911                                         task.SetParameterValue ("Projects", String.Format ("@({0})", level_str));
 912                                         task.SetParameterValue ("ToolsVersion", "$(ProjectToolsVersion)");
 913                                         task.SetParameterValue ("Properties",
 914                                                 string.Format ("Configuration=%(Configuration); Platform=%(Platform); BuildingSolutionFile=true; CurrentSolutionConfigurationContents=$(CurrentSolutionConfigurationContents); SolutionDir=$(SolutionDir); SolutionExt=$(SolutionExt); SolutionFileName=$(SolutionFileName); SolutionName=$(SolutionName); SolutionPath=$(SolutionPath)"));
 915                                         if (buildTarget != "Build")
 916                                                 task.SetParameterValue ("Targets", buildTarget);
 917                                         //FIXME: change this to BuildInParallel=true, when parallel
 918                                         //       build support gets added
 919                                         task.SetParameterValue ("RunEachTargetSeparately", "true");
 920                                         if (is_build_or_rebuild)
 921                                                 task.AddOutputItem ("TargetOutputs", "CollectedBuildOutput");
 922
 923                                         level_str = String.Format ("SkipLevel{0}", i);
 924                                         task = t.AddNewTask ("Message");
 925                                         task.Condition = String.Format ("'@({0})' != ''", level_str);
 926                                         task.SetParameterValue ("Text",
 927                                                 String.Format ("The project '%({0}.Identity)' is disabled for solution " +
 928                                                         "configuration '$(Configuration)|$(Platform)'.", level_str));
 929
 930                                         level_str = String.Format ("MissingConfigLevel{0}", i);
 931                                         task = t.AddNewTask ("Warning");
 932                                         task.Condition = String.Format ("'@({0})' != ''", level_str);
 933                                         task.SetParameterValue ("Text",
 934                                                 String.Format ("The project configuration for project '%({0}.Identity)' " +
 935                                                         "corresponding to the solution configuration " +
 936                                                         "'$(Configuration)|$(Platform)' was not found.", level_str));
 937                                 }
 938
 939                                 // "build" website projects also
 940                                 StringBuilder w_targets = new StringBuilder ();
 941                                 foreach (ProjectInfo info in websiteProjectInfos) {
 942                                         if (w_targets.Length > 0)
 943                                                 w_targets.Append (";");
 944                                         w_targets.Append (GetTargetNameForProject (info.Name, buildTarget));
 945                                 }
 946
 947                                 task = t.AddNewTask ("CallTarget");
 948                                 task.SetParameterValue ("Targets", w_targets.ToString ());
 949                                 task.SetParameterValue ("RunEachTargetSeparately", "true");
 950                         }
 951                 }
 952
 953                 // Sorts the ProjectInfo dependency graph, to obtain
 954                 // a series of build levels with projects. Projects
 955                 // in each level can be run parallel (no inter-dependency).
 956                 static List<T>[] TopologicalSort<T> (IEnumerable<T> items) where T: ProjectInfo
 957                 {
 958                         IList<T> allItems;
 959                         allItems = items as IList<T>;
 960                         if (allItems == null)
 961                                 allItems = new List<T> (items);
 962
 963                         bool[] inserted = new bool[allItems.Count];
 964                         bool[] triedToInsert = new bool[allItems.Count];
 965                         int[] levels = new int [allItems.Count];
 966
 967                         int maxdepth = 0;
 968                         for (int i = 0; i < allItems.Count; ++i) {
 969                                 int d = Insert<T> (i, allItems, levels, inserted, triedToInsert);
 970                                 if (d > maxdepth)
 971                                         maxdepth = d;
 972                         }
 973
 974                         // Separate out the project infos by build level
 975                         List<T>[] infosByLevel = new List<T>[maxdepth];
 976                         for (int i = 0; i < levels.Length; i ++) {
 977                                 int level = levels [i] - 1;
 978                                 if (infosByLevel [level] == null)
 979                                         infosByLevel [level] = new List<T> ();
 980
 981                                 infosByLevel [level].Add (allItems [i]);
 982                         }
 983
 984                         return infosByLevel;
 985                 }
 986
 987                 // returns level# for the project
 988                 static int Insert<T> (int index, IList<T> allItems, int[] levels, bool[] inserted, bool[] triedToInsert)
 989                         where T: ProjectInfo
 990                 {
 991                         if (inserted [index])
 992                                 return levels [index];
 993
 994                         if (triedToInsert[index])
 995                                 throw new InvalidOperationException (String.Format (
 996                                                 "Cyclic dependency involving project {0} found in the project dependency graph",
 997                                                 allItems [index].Name));
 998
 999                         triedToInsert[index] = true;
1000                         ProjectInfo insertItem = allItems[index];
1001
1002                         int maxdepth = 0;
1003                         foreach (ProjectInfo dependency in insertItem.Dependencies.Values) {
1004                                 for (int j = 0; j < allItems.Count; ++j) {
1005                                         ProjectInfo checkItem = allItems [j];
1006                                         if (dependency.FileName == checkItem.FileName) {
1007                                                 int d = Insert (j, allItems, levels, inserted, triedToInsert);
1008                                                 maxdepth = d > maxdepth ? d : maxdepth;
1009                                                 break;
1010                                         }
1011                                 }
1012                         }
1013                         levels [index] = maxdepth + 1;
1014                         inserted [index] = true;
1015
1016                         return levels [index];
1017                 }
1018
1019                 public static IEnumerable<string> GetAllProjectFileNames (string solutionFile)
1020                 {
1021                         StreamReader reader = new StreamReader (solutionFile);
1022                         string line = reader.ReadToEnd ();
1023                         line = line.Replace ("\r\n", "\n");
1024                         string soln_dir = Path.GetDirectoryName (solutionFile);
1025
1026                         Match m = projectRegex.Match (line);
1027                         while (m.Success) {
1028                                 if (String.Compare (m.Groups [1].Value, solutionFolderGuid,
1029                                                 StringComparison.InvariantCultureIgnoreCase) != 0)
1030                                         yield return Path.Combine (soln_dir, m.Groups [3].Value).Replace ("\\", "/");
1031
1032                                 m = m.NextMatch ();
1033                         }
1034                 }
1035         }
1036 }