Improved glyphbuilder script (by Barry Schwartz)

tools/glyphbuilder.py

@@ -1,13 +1,14 @@
 import os
 import sys
+import importlib
 import fontforge
 
 
 #def componentsByFontname(font, fontname):
 #    module_name = fontname + "_components"
 #    module = __import__(module_name)
 
-def composeAccented(glyph):
+def composeAccented(glyph, glyphComponents):
     """Compose accented glyphs.
     
     Get the components from the dictionary and build the new glyph
@@ -52,27 +53,40 @@ def buildAccentedGlyphs(junk,object):
 #    Call the composing function for every glyph that has an entry 
 #    in the dictionary."""
 #    componentsByFontname(font, font.fontname)
-    font_file = os.path.normpath(fontforge.activeFont().path)
+
+    font = object if type(object).__name__ == "font" else object.font
+    font_file = os.path.normpath(font.path)
     top_level = os.path.split(os.path.split(font_file)[0])[0]
     tool_path = os.path.join(top_level, "tools")
+    if tool_path not in sys.path:
+        sys.path.append(tool_path)
 
+    import_successful = True
     try:
-        sys.path.append(tool_path)
-        from glyphcomponents import glyphComponents
-
-        if type(object).__name__ == "font":
-            for glyph in object.selection.byGlyphs:
-                if glyph.glyphname in glyphComponents.keys():
-                    composeAccented(glyph)
-                else:
-                    continue
-        else: 
-            if object.glyphname in glyphComponents.keys():
-                composeAccented(object)
-            else:
-                logWarning('This glyph has no entry in the dictionary')
-    except ImportError:
+        glyphcomponents = importlib.import_module("glyphcomponents")
+    except:
+        import_successful = False
         fontforge.postError("Cannot import Python module glyphcomponents",
-                "This script is made to work with the SFDs residing in top_level/SFD and the module in top_level/tools.")
+                            "This script is made to work with the SFDs residing in top_level/SFD and the module in top_level/tools.")
+
+    if import_successful:
+        try:  
+            reload(glyphcomponents)
+            glyphComponents = glyphcomponents.glyphComponents
+
+            if type(object).__name__ == "font":
+                for glyph in object.selection.byGlyphs:
+                    if glyph.glyphname in glyphComponents.keys():
+                        composeAccented(glyph, glyphComponents)
+                    else:
+                        continue
+            else:
+                if object.glyphname in glyphComponents.keys():
+                    composeAccented(object, glyphComponents)
+                else:
+                    logWarning('This glyph has no entry in the dictionary')
+
+        except BaseException as e:
+          fontforge.postError("Building glyphs failed", str(e))
 
 fontforge.registerMenuItem(buildAccentedGlyphs,None,None,("Font","Glyph"),None,"Glyphbuilder");