up follow livre

venv/lib/python3.13/site-packages/fontTools/ttLib/ttCollection.py

@@ -0,0 +1,125 @@
+from fontTools.ttLib.ttFont import TTFont
+from fontTools.ttLib.sfnt import readTTCHeader, writeTTCHeader
+from io import BytesIO
+import struct
+import logging
+
+log = logging.getLogger(__name__)
+
+
+class TTCollection(object):
+    """Object representing a TrueType Collection / OpenType Collection.
+    The main API is self.fonts being a list of TTFont instances.
+
+    If shareTables is True, then different fonts in the collection
+    might point to the same table object if the data for the table was
+    the same in the font file.  Note, however, that this might result
+    in suprises and incorrect behavior if the different fonts involved
+    have different GlyphOrder.  Use only if you know what you are doing.
+    """
+
+    def __init__(self, file=None, shareTables=False, **kwargs):
+        fonts = self.fonts = []
+        if file is None:
+            return
+
+        assert "fontNumber" not in kwargs, kwargs
+
+        closeStream = False
+        if not hasattr(file, "read"):
+            file = open(file, "rb")
+            closeStream = True
+
+        tableCache = {} if shareTables else None
+
+        header = readTTCHeader(file)
+        for i in range(header.numFonts):
+            font = TTFont(file, fontNumber=i, _tableCache=tableCache, **kwargs)
+            fonts.append(font)
+
+        # don't close file if lazy=True, as the TTFont hold a reference to the original
+        # file; the file will be closed once the TTFonts are closed in the
+        # TTCollection.close(). We still want to close the file if lazy is None or
+        # False, because in that case the TTFont no longer need the original file
+        # and we want to avoid 'ResourceWarning: unclosed file'.
+        if not kwargs.get("lazy") and closeStream:
+            file.close()
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, type, value, traceback):
+        self.close()
+
+    def close(self):
+        for font in self.fonts:
+            font.close()
+
+    def save(self, file, shareTables=True):
+        """Save the font to disk. Similarly to the constructor,
+        the 'file' argument can be either a pathname or a writable
+        file object.
+        """
+        if not hasattr(file, "write"):
+            final = None
+            file = open(file, "wb")
+        else:
+            # assume "file" is a writable file object
+            # write to a temporary stream to allow saving to unseekable streams
+            final = file
+            file = BytesIO()
+
+        tableCache = {} if shareTables else None
+
+        offsets_offset = writeTTCHeader(file, len(self.fonts))
+        offsets = []
+        for font in self.fonts:
+            offsets.append(file.tell())
+            font._save(file, tableCache=tableCache)
+            file.seek(0, 2)
+
+        file.seek(offsets_offset)
+        file.write(struct.pack(">%dL" % len(self.fonts), *offsets))
+
+        if final:
+            final.write(file.getvalue())
+        file.close()
+
+    def saveXML(self, fileOrPath, newlinestr="\n", writeVersion=True, **kwargs):
+        from fontTools.misc import xmlWriter
+
+        writer = xmlWriter.XMLWriter(fileOrPath, newlinestr=newlinestr)
+
+        if writeVersion:
+            from fontTools import version
+
+            version = ".".join(version.split(".")[:2])
+            writer.begintag("ttCollection", ttLibVersion=version)
+        else:
+            writer.begintag("ttCollection")
+        writer.newline()
+        writer.newline()
+
+        for font in self.fonts:
+            font._saveXML(writer, writeVersion=False, **kwargs)
+            writer.newline()
+
+        writer.endtag("ttCollection")
+        writer.newline()
+
+        writer.close()
+
+    def __getitem__(self, item):
+        return self.fonts[item]
+
+    def __setitem__(self, item, value):
+        self.fonts[item] = value
+
+    def __delitem__(self, item):
+        return self.fonts[item]
+
+    def __len__(self):
+        return len(self.fonts)
+
+    def __iter__(self):
+        return iter(self.fonts)