diff options
Diffstat (limited to 'scripts/lib/fontbuild/features.py')
| -rwxr-xr-x | scripts/lib/fontbuild/features.py | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/scripts/lib/fontbuild/features.py b/scripts/lib/fontbuild/features.py index 3b52f76..2de484d 100755 --- a/scripts/lib/fontbuild/features.py +++ b/scripts/lib/fontbuild/features.py @@ -150,6 +150,23 @@ class FilterFeatureWriter(FDKSyntaxFeatureWriter): super(FilterFeatureWriter, self).languageSystem(langTag, scriptTag)
+def compileFeatureRE(name):
+ """Compiles a feature-matching regex using feaTool's template."""
+ featureRE = list(parser.featureContentRE)
+ featureRE.insert(2, name)
+ featureRE.insert(6, name)
+ return re.compile("".join(featureRE))
+
+
+def updateFeature(font, name, value):
+ """Add a feature definition, or replace existing one."""
+ featureRE = compileFeatureRE(name)
+ if featureRE.search(font.features.text):
+ font.features.text = featureRE.sub(value, font.features.text)
+ else:
+ font.features.text += "\n" + value
+
+
def readFeatureFile(font, text):
"""Incorporate valid definitions from feature text into font."""
writer = FilterFeatureWriter(set(font.keys()))
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