Adds blender exporter option to toggle compact separators output

utils/exporters/blender/addons/io_three/__init__.py

@@ -322,7 +322,7 @@ def restore_export_settings(properties, settings):
         constants.INDEX_TYPE,
         constants.EXPORT_OPTIONS[constants.INDEX_TYPE])
     ## }
-   
+
     ## Materials {
     properties.option_materials = settings.get(
         constants.MATERIALS,
@@ -374,6 +374,10 @@ def restore_export_settings(properties, settings):
         constants.INDENT,
         constants.EXPORT_OPTIONS[constants.INDENT])
 
+    properties.option_compact_separators = settings.get(
+        constants.COMPACT_SEPARATORS,
+        constants.EXPORT_OPTIONS[constants.COMPACT_SEPARATORS])
+
     properties.option_copy_textures = settings.get(
         constants.COPY_TEXTURES,
         constants.EXPORT_OPTIONS[constants.COPY_TEXTURES])
@@ -467,6 +471,7 @@ def set_settings(properties):
         constants.LOGGING: properties.option_logging,
         constants.COMPRESSION: properties.option_compression,
         constants.INDENT: properties.option_indent,
+        constants.COMPACT_SEPARATORS: properties.option_compact_separators,
         constants.COPY_TEXTURES: properties.option_copy_textures,
         constants.TEXTURE_FOLDER: properties.option_texture_folder,
 
@@ -730,6 +735,11 @@ class ExportThree(bpy.types.Operator, ExportHelper):
         description="Disable this to reduce the file size",
         default=constants.EXPORT_OPTIONS[constants.INDENT])
 
+    option_compact_separators = BoolProperty(
+        name="Compact JSON separators",
+        description="Enable this to reduce the file size",
+        default=constants.EXPORT_OPTIONS[constants.COMPACT_SEPARATORS])
+
     option_compression = EnumProperty(
         name="",
         description="Compression options",
@@ -943,6 +953,9 @@ class ExportThree(bpy.types.Operator, ExportHelper):
 
         row = layout.row()
         row.prop(self.properties, 'option_indent')
+
+        row = layout.row()
+        row.prop(self.properties, 'option_compact_separators')
         ## }
 
         ## Operators {

utils/exporters/blender/addons/io_three/constants.py

@@ -54,6 +54,7 @@ NUMERIC = {
 JSON = 'json'
 EXTENSION = '.%s' % JSON
 INDENT = 'indent'
+COMPACT_SEPARATORS = 'compactSeparators'
 
 
 MATERIALS = 'materials'
@@ -162,7 +163,8 @@ EXPORT_OPTIONS = {
     EMBED_ANIMATION: True,
     GEOMETRY_TYPE: GEOMETRY,
     INFLUENCES_PER_VERTEX: 2,
-    INDENT: True
+    INDENT: True,
+    COMPACT_SEPARATORS: False
 }
 
 

utils/exporters/blender/addons/io_three/exporter/io.py

@@ -67,8 +67,10 @@ def dump(filepath, data, options=None):
 
         indent = options.get(constants.INDENT, True)
         indent = 4 if indent else None
+        compact_separators = options.get(constants.COMPACT_SEPARATORS, False)
+        compact_separators = (',', ':') if compact_separators else None
         logger.info("Dumping to JSON")
-        func = lambda x, y: _json.json.dump(x, y, indent=indent)
+        func = lambda x, y: _json.json.dump(x, y, indent=indent, separators=compact_separators)
         mode = 'w'
 
     logger.info("Writing to %s", filepath)