add script which converts footprint libraries from one format to another

scripts/lib_convert.py

+#!/usr/bin/python
+
+# Convert a footprint library from one format to another, e.g. legacy to pretty.
+
+# 1) Build target _pcbnew after enabling scripting in cmake.
+# $ make _pcbnew
+
+# 2) Changed dir to pcbnew
+# $ cd pcbnew
+# $ pwd
+# build/pcbnew
+
+# 3) Entered following command line, script takes to arguments: oldLibPath & newLibPath
+# $ PYTHONPATH=. <path_to>/lib_convert.py /usr/local/share/kicad/modules/smd_dil.mod /tmp/smd_dil.pretty
+
+# 4) inspect one footprint found in new librarypath /tmp/smd_dil
+# $ less /tmp/smd_dil/msoic-10.kicad_mod
+
+
+from __future__ import print_function
+from pcbnew import *
+import sys
+
+if len( sys.argv ) < 3 :
+    print( "usage: script srcLibraryPath dstLibraryPath" )
+    sys.exit(1)
+
+
+src_libpath = sys.argv[1]
+dst_libpath = sys.argv[2]
+
+
+src_type = IO_MGR.GuessPluginTypeFromLibPath( src_libpath );
+dst_type = IO_MGR.GuessPluginTypeFromLibPath( dst_libpath );
+
+src_plugin = IO_MGR.PluginFind( src_type )
+dst_plugin = IO_MGR.PluginFind( dst_type )
+
+try:
+    dst_plugin.FootprintLibDelete( dst_libpath )
+except:
+    None    # ignore, new may not exist if first run
+
+dst_plugin.FootprintLibCreate( dst_libpath )
+
+list_of_parts = src_plugin.FootprintEnumerate( src_libpath )
+
+for part_id in list_of_parts:
+    module = src_plugin.FootprintLoad( src_libpath, part_id )
+    dst_plugin.FootprintSave( dst_libpath, module )
+