Improve reading sources while exporting to svg.

fixing #54

Author: typemytype

Batch.roboFontExt/lib/webFormats/__init__.py

@@ -167,7 +167,7 @@ def convertToEot(ttfPath, dest):
 
 
 def convertToSVG(ttfPath, dest):
-    SVGBuilder(ttfPath, dest)
+    return SVGBuilder(ttfPath, dest)
 
 
 htmlPreviewDefault = string.ascii_letters + string.digits
@@ -478,7 +478,11 @@ def _convertPath(self, path, destDir, saveOTF=True, saveTTF=True, saveWOFF=True,
             report.indent()
             report.write("path: %s" % svgPath)
             buildTree(fontDir)
-            convertToSVG(path, svgPath)
+            message = convertToSVG(path, svgPath)
+            if message:
+                report.indent()
+                report.write(message)
+                report.dedent()
             report.dedent()
             report.newLine()
 

Batch.roboFontExt/lib/webFormats/svgBuilder.py

@@ -1,17 +1,24 @@
 from ufo2svg import convertUFOToSVGFont
 from defcon import Font
 from extractor import extractUFO
+from fontTools.ufoLib.errors import UFOLibError
 
 
 def generateSVG(source, dest):
-    font = Font()
     try:
+        font = Font(source)
+    except UFOLibError:
+        font = Font()
         extractUFO(source, font)
+    except Exception as e:
+        return f"Failed to extract path {source}: {e}."
+
+    try:
         convertUFOToSVGFont(font, dest)
-    except Exception:
-        return ("Failed to generate SVG.", "")
-    return ("", "")
+    except Exception as e:
+        return f"Failed to generate SVG: {e}."
+    return ""
 
 
 def SVGBuilder(sourcePath, destinationPath):
-    generateSVG(sourcePath, destinationPath)
+    return generateSVG(sourcePath, destinationPath)