Implement -o flag for extracting

hecl/driver/ToolExtract.hpp

@@ -34,6 +34,10 @@ public:
             LogModule.report(logvisor::Fatal, "hecl extract needs a source path as its first argument");
 
         if (!info.project)
+        {
+            hecl::SystemString rootDir;
+
+            if (info.output.empty())
             {
                 /* Get name from input file and init project there */
                 hecl::SystemString baseFile = info.args.front();
@@ -49,8 +53,17 @@ public:
                 if (baseFile.empty())
                     LogModule.report(logvisor::Fatal, "hecl extract must be ran within a project directory");
 
+                rootDir = info.cwd + baseFile;
+            }
+            else
+            {
+                if (hecl::PathRelative(info.output.c_str()))
+                    rootDir = info.cwd + info.output;
+                else
+                    rootDir = info.output;
+            }
+
             size_t ErrorRef = logvisor::ErrorCount;
-            hecl::SystemString rootDir = info.cwd + baseFile;
             hecl::ProjectRootPath newProjRoot(rootDir);
             newProjRoot.makeDir();
             m_fallbackProj.reset(new hecl::Database::Project(newProjRoot));