Ticket #6: test.py

def glyphNameToFileName(glyphName, glyphSet):
        """Default algorithm for making a file name out of a glyph name.
        This one has limited support for case insensitive file systems:
        it assumes glyph names are not case sensitive apart from the first
        character:
                'a'     -> 'a.glif'
                'A'     -> 'A_.glif'
                'A.alt' -> 'A_.alt.glif'
                'A.Alt' -> 'A_.Alt.glif'  # this one would cause problems
        """
        if glyphName.startswith("."):
                # some OSes consider filenames such as .notdef "hidden"
                glyphName = "_" + glyphName[1:]
        parts = glyphName.split(".")
        if parts[0].find("_")!=-1:
                # it is a compound name, check the separate parts
                bits = []
                for p in parts[0].split("_"):
                        if p != p.lower():
                                bits.append(p+"_")
                                continue
                        bits.append(p)
                parts[0] = "_".join(bits)
        else:
                # it is a single name
                if parts[0] != parts[0].lower():
                        parts[0] += "_"
        for i in range(1, len(parts)):
                # resolve additional, period separated parts, like alt / Alt
                if parts[i] != parts[i].lower():
                        parts[i] += "_"
        return ".".join(parts) + ".glif"


names = [
        ('.notdef', '_notdef.glif'),
        ('a', 'a.glif'),
        ('A', 'A_.glif'),
        ('A.alt', 'A_.alt.glif'),
        ('A.Alt', 'A_.Alt_.glif'),
        ('T_H', "T__H_.glif"),
        ("T_h", "T__h.glif"),
        ("t_h", "t_h.glif"),
        ('F_F_I', "F__F__I_.glif"),
        ('f_f_i', "f_f_i.glif")
        ]


for name, want in names:
        filename = glyphNameToFileName(name, None)
        print name, "\t", filename
        assert filename == want