4 files changed, 63 insertions, 7 deletions

diff --git a/src/build.l b/src/build.l
index 620f9db..540af46 100644
--- a/src/build.l
+++ b/src/build.l
@@ -113,7 +113,9 @@ void Builder::scanBegin()
 {
         yy_flex_debug = false;
         if( !(yyin = fopen( file.c_str(), "r" )) )
-                fprintf( stderr, "cannot open %s\n", file.c_str() );
+        {
+                error( std::string("cannot open file: ") + file );
+        }
 }
 
 void Builder::scanEnd()
diff --git a/src/builder.cpp b/src/builder.cpp
index 65ae0c2..3bcd593 100644
--- a/src/builder.cpp
+++ b/src/builder.cpp
@@ -558,3 +558,8 @@ void cleanList( std::list<std::string> &lst )
         }
 }
 
+void Builder::error( const std::string &err )
+{
+        throw BuildException( err.c_str() );
+}
+
diff --git a/src/builder.h b/src/builder.h
index 82a82c4..152b969 100644
--- a/src/builder.h
+++ b/src/builder.h
@@ -40,7 +40,7 @@ public:
         void execute( Action *pAct );
 
         //void error( const yy::location &l, const std::string &m );
-        //void error( const std::string &m );
+        void error( const std::string &m );
 
         std::string file;
 
diff --git a/src/main.cpp b/src/main.cpp
index 132fb18..70a3ffc 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,16 +1,65 @@
 #include "builder.h"
 #include "viewerplain.h"
 #include "viewerpercent.h"
+#include "paramproc.h"
+#include "staticstring.h"
+
+class Param : public ParamProc
+{
+public:
+        Param() :
+                sFile("build.conf")
+        {
+                addHelpBanner("Build r?\n\n");
+                addParam("file", 'f', &sFile, 
+                                "Set the input script, default: build.conf");
+                addParam('p', mkproc(Param::procViewPercent),
+                                "Switch to percent view.");
+                addParam("help", mkproc(ParamProc::help),
+                                "This help");
+                pViewer = new ViewerPlain;
+        }
+
+        virtual ~Param()
+        {
+                delete pViewer;
+        }
+
+        virtual int cmdParam( int argc, char *argv[] )
+        {
+                if( sAction > 0 )
+                {
+                        printf("You can only specify one action per command line.\n\n");
+                        exit( 1 );
+                }
+                sAction = argv[0];
+                return 1;
+        }
+
+        int procViewPercent( int argc, char *argv[] )
+        {
+                delete pViewer;
+                pViewer = new ViewerPercent;
+        }
+
+        std::string sFile;
+        StaticString sAction;
+        Viewer *pViewer;
+
+private:
+};
 
 int main( int argc, char *argv[] )
 {
-        ViewerPercent p;
-        Builder bld( p );
+        Param prm;
+        prm.process( argc, argv );
+
+        Builder bld( *prm.pViewer );
 
-        bld.load("build.conf");
+        bld.load( prm.sFile.c_str() );
 
-        if( argc >= 2 )
-                bld.build( argv[1] );
+        if( prm.sAction > 0 )
+                bld.build( prm.sAction );
         else
                 bld.build();
 /*