This patch adds a command-line option --plot to eeschema that makes it
run File -> Plot -> Plot PostScript -> Plot ALL on the specified file.
It also prevents eeschema from opening a window and from checking for
concurrent instances.

This lets shell scripts generate plots, i.e., of schematics that have
been processed by these scripts.

Known issue: if there is an error or a warning, eeschema will bring up
a dialog instead of just exiting.

This patch is for KiCad SVN revision 1771.

- Werner

---

Index: kicad/eeschema/eeschema.cpp
===================================================================
--- kicad.orig/eeschema/eeschema.cpp	2010-04-28 04:34:54.000000000 -0300
+++ kicad/eeschema/eeschema.cpp	2010-04-28 05:32:37.000000000 -0300
@@ -10,6 +10,8 @@
 #include "gestfich.h"
 #include "bitmaps.h"
 #include "eda_dde.h"
+#include "program.h"
+#include "plotps.h"
 #include "id.h"
 
 #include "program.h"
@@ -85,6 +87,69 @@
 int DefaultTransformMatrix[2][2] = { { 1, 0 }, { 0, -1 } };
 
 
+/*
+ * "PlotOnly" is a quick and dirty implementation of a non-interactive plot
+ * mode.
+ *
+ * This is neither a nice nor a complete implementation of this concept. E.g.,
+ * if there are any errors, KiCad may bring up a dialog instead of just
+ * exiting.
+ *
+ * However, this is the best we can do without making considerably intrusive
+ * changes to the internals of KiCad.
+ */
+
+
+static void PlotOnly( WinEDA_App* app )
+{
+    WinEDA_SchematicFrame* frame;
+    wxFileName fn;
+
+    if( app->argc < 3 )
+    {
+        fprintf( stderr, "usage: %ls [[--plot] filename]\n", *app->argv );
+        exit( 1 );
+    }
+
+    fn = app->argv[2];
+    if( !fn.IsOk() )
+    {
+        fprintf( stderr, "%ls: bad name\n", app->argv[2] );
+        exit(1);
+    }
+
+    /* init EESCHEMA */
+    SeedLayers();
+    app->GetSettings( FALSE );
+
+    // Create main frame (schematic frame) :
+    frame = new WinEDA_SchematicFrame( NULL, wxT( "EESchema" ),
+                                       wxPoint( 0, 0 ), wxSize( 600, 400 ) );
+
+    app->SetTopWindow( frame );
+    frame->Show( FALSE );
+
+    ActiveScreen = frame->GetScreen();
+
+    /* Load file specified in the command line. */
+    if( fn.GetExt() != SchematicFileExtension )
+        fn.SetExt( SchematicFileExtension );
+    wxSetWorkingDirectory( fn.GetPath() );
+    if( !frame->LoadOneEEProject( fn.GetFullPath(), false ) )
+    {
+        fprintf( stderr, "%ls: can't load\n", app->argv[2] );
+        exit( 1 );
+    }
+
+    WinEDA_PlotPSFrame* Ps_frame = new WinEDA_PlotPSFrame( frame );
+    wxCommandEvent dummy;
+
+    Ps_frame->OnPlotPsAllExecuteClick( dummy );
+
+    exit( 0 );
+}
+
+
 /************************************/
 /* Called to initialize the program */
 /************************************/
@@ -127,6 +192,9 @@
 
     InitEDA_Appl( wxT( "EESchema" ), APP_TYPE_EESCHEMA );
 
+    if( argc > 1 && !wxStrcmp( argv[1], wxT( "--plot" ) ) )
+        PlotOnly( this );
+
     if( m_Checker && m_Checker->IsAnotherRunning() )
     {
         if( !IsOK( NULL, _( "Eeschema is already running, Continue?" ) ) )