Add the ttc sub-command

A separate script `splitttc.py` is merged as the sub-command of the
`east-asian-spacing` command line tool.

README.md

@@ -300,7 +300,11 @@ It can test fonts you built locally.
 
 Note, when you want to test a TTC (TrueType Collection)
 but your browser can load only the first font in the TTC,
-`script/splitttc.py` can split TTC into OTF/TTF.
+the following command extracts all OpenType fonts (.otf or .ttf)
+from an OpenType Collection font file (.ttc or .otc).
+```sh
+east-asian-spacing ttc build/NotoSansCJK-Regular.ttc
+```
 
 [test HTML page]: https://kojiishi.github.io/chws/test.html
 

east_asian_spacing/__main__.py

@@ -2,6 +2,7 @@
 import sys
 
 import east_asian_spacing
+import east_asian_spacing.ttc
 
 
 def main():
@@ -13,6 +14,11 @@ def main():
             asyncio.run(east_asian_spacing.Dump.main())
             return
 
+        if sub_command == 'ttc':
+            del args[1]
+            east_asian_spacing.ttc.main()
+            return
+
     asyncio.run(east_asian_spacing.Builder.main())
 
 

scripts/splitttc.py → east_asian_spacing/ttc.py

@@ -7,7 +7,19 @@
 
 from east_asian_spacing.log_utils import init_logging
 
-logger = logging.getLogger('splitttc')
+logger = logging.getLogger('ttc')
+
+
+def ttc_split(path: pathlib.Path):
+    ttc = TTCollection(path)
+    for i, ttfont in enumerate(ttc.fonts):
+        if ttfont.has_key('glyf'):
+            ext = '.ttf'
+        else:
+            ext = '.otf'
+        output = path.with_name(f'{path.name}-{i}{ext}')
+        logger.info('%s', output)
+        ttfont.save(output)
 
 
 def main():
@@ -21,15 +33,7 @@ def main():
     args = parser.parse_args()
     init_logging(args.verbose, main=logger)
     for path in args.path:
-        ttc = TTCollection(path)
-        for i, ttfont in enumerate(ttc.fonts):
-            if ttfont.has_key('glyf'):
-                ext = '.ttf'
-            else:
-                ext = '.otf'
-            output = path.with_name(f'{path.name}-{i}{ext}')
-            logger.info('%s', output)
-            ttfont.save(output)
+        ttc_split(path)
 
 
 if __name__ == '__main__':

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
 name = "east_asian_spacing"
-version = "1.3.4"
+version = "1.3.5-alpha.0"
 description = "East Asian Contextual Spacing Build Tools"
 authors = ["Koji Ishii <[email protected]>"]
 readme = "README.md"