An complete MvsSln integration with IEnvironment

Updated `IsolatedEnv` together with latest MvsSln's changes: ValidProjects etc.

This also fixes `Environment.StartupProjectString`, see details in #53

vsSolutionBuildEvent/API/EventLevel.cs

@@ -18,7 +18,6 @@
 using System;
 using System.Collections.Generic;
 using EnvDTE80;
-using Microsoft.VisualStudio.Shell;
 using Microsoft.VisualStudio.Shell.Interop;
 using net.r_eg.vsSBE.API.Commands;
 using net.r_eg.vsSBE.Bridge;
@@ -29,6 +28,10 @@
 using net.r_eg.vsSBE.SBEScripts;
 using net.r_eg.vsSBE.Scripts;
 
+#if VSSDK_15_AND_NEW
+using Microsoft.VisualStudio.Shell;
+#endif
+
 namespace net.r_eg.vsSBE.API
 {
     using AppSettings = vsSBE.Settings;
@@ -134,7 +137,7 @@ public void load(object dte2, ISettings cfg)
         {
             configure(cfg);
 
-            this.Environment = new Environment((DTE2)dte2);
+            this.Environment = new Environment((DTE2)dte2, this);
             init();
 
             clientLib.tryLoad(this, dte2);
@@ -424,7 +427,7 @@ public int solutionOpened(object pUnkReserved, int fNewSolution)
             UI.Plain.State.Print(config.Data);
 
             Action.Cmd.MSBuild.initPropByDefault(); //LC: #815, #814
-            OpenedSolution(this, new EventArgs());
+            OpenedSolution(this, EventArgs.Empty);
 
             if(slnEvents == null) {
                 updateBuildType(BuildType.Common);
@@ -462,7 +465,7 @@ public int solutionClosed(object pUnkReserved)
                 ret = Codes.Failed;
             }
 
-            ClosedSolution(this, new EventArgs());
+            ClosedSolution(this, EventArgs.Empty);
 
             ConfigManager.Config.unload();
             ConfigManager.UserConfig.unload();

vsSolutionBuildEvent/EnvAbstract.cs

@@ -15,17 +15,37 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+using System;
+using System.Linq;
 using net.r_eg.MvsSln;
 using net.r_eg.MvsSln.Core;
 using net.r_eg.vsSBE.API.Commands;
+using net.r_eg.vsSBE.Exceptions;
 using BuildType = net.r_eg.vsSBE.Bridge.BuildType;
 using EProject = Microsoft.Build.Evaluation.Project;
+using ProjectItem = net.r_eg.MvsSln.Core.ProjectItem;
 
 namespace net.r_eg.vsSBE
 {
     public abstract class EnvAbstract
     {
-        protected IRuleOfConfig cfgRule = new RuleOfConfig();
+        /// <summary>
+        /// Parsed solution data.
+        /// </summary>
+        protected ISlnResult sln;
+
+        /// <summary>
+        /// Activated environment for projects processing.
+        /// </summary>
+        protected IXProjectEnv slnEnv;
+
+        //[Obsolete("integrate via IXProjectEnv use")]
+        //protected IRuleOfConfig cfgRule = new RuleOfConfig();
+
+        /// <summary>
+        /// Project by default or "StartUp Project".
+        /// </summary>
+        public abstract string StartupProjectString { get; protected set; }
 
         /// <summary>
         /// Current context for actions.
@@ -46,25 +66,39 @@ public IFireCoreCommand CoreCmdSender
         }
 
         /// <summary>
-        /// Returns formatted configuration from the SolutionConfiguration2
+        /// Get instance of the Build.Evaluation.Project for accessing to properties etc.
         /// </summary>
-        public string SolutionCfgFormat(EnvDTE80.SolutionConfiguration2 cfg)
+        /// <param name="name">Specified project name. null value will use the name from startup-project.</param>
+        /// <returns>Found relevant Microsoft.Build.Evaluation.Project.</returns>
+        public virtual EProject getProject(string name = null)
         {
-            if(cfg == null) {
-                return formatCfg(PropertyNames.UNDEFINED);
+            // NOTE: Do not use ProjectCollection.GlobalProjectCollection from EnvDTE Environment because it can be empty.
+            //       https://github.com/3F/vsSolutionBuildEvent/issues/8
+            //       Either use DTE projects collection to refer to MBE projects, or use MvsSln's GetOrLoadProject
+
+            Log.Trace($"getProject: started with '{name}' /{StartupProjectString}");
+
+            if(String.IsNullOrEmpty(name)) {
+                name = StartupProjectString;
             }
-            return formatCfg(cfg.Name, cfg.PlatformName);
+
+            ProjectItem project = sln.ProjectItems.FirstOrDefault(p => p.name == name);
+            if(project.fullPath == null) {
+                throw new NotFoundException($"Project '{name}' was not found. ['{project.name}', '{project.pGuid}']");
+            }
+
+            return slnEnv.GetOrLoadProject(project);
         }
 
         /// <summary>
-        /// Gets project name from Microsoft.Build.Evaluation.Project
+        /// Returns formatted configuration from the SolutionConfiguration2
         /// </summary>
-        /// <param name="eProject"></param>
-        /// <returns></returns>
-        protected virtual string getProjectNameFrom(EProject eProject)
+        public string SolutionCfgFormat(EnvDTE80.SolutionConfiguration2 cfg)
         {
-            //NOTE: this property can also define an unified project name between various .sln files (_2010.sln, _2017.sln)
-            return eProject.GetPropertyValue(PropertyNames.PRJ_NAME);
+            if(cfg == null) {
+                return formatCfg(PropertyNames.UNDEFINED);
+            }
+            return formatCfg(cfg.Name, cfg.PlatformName);
         }
 
         protected string formatCfg(string name, string platform = null)