Robofont script to validate segment structure across fonts

segment_structure.py

'''
Print out segment structure for current glyph in all open fonts.


If the structure matches, only one line will be printed:

a 0 ⤴️📈📈⤴️⤴️⤴️⤴️📈⤴️⤴️⤴️ 1 ⤴️📈⤴️⤴️📈⤴️⤴️⤴️⤴️📈📈⤴️⤴️📈📈⤴️ ✔


If it does not, the structure of all open fonts will be printed for comparison:

Caption 0 0 ⤴️📈📈⤴️⤴️⤴️⤴️📈⤴️⤴️⤴️ 1 ⤴️📈⤴️⤴️📈⤴️⤴️⤴️⤴️📈📈⤴️⤴️📈📈⤴️
Caption 1 0 ⤴️📈📈⤴️⤴️⤴️⤴️📈⤴️⤴️⤴️ 1 ⤴️📈⤴️⤴️📈⤴️⤴️⤴️⤴️📈📈⤴️⤴️📈📈⤴️
Caption 2 0 ⤴️📈📈⤴️⤴️⤴️⤴️📈⤴️⤴️⤴️ 1 ⤴️📈⤴️⤴️📈⤴️⤴️⤴️⤴️📈📈⤴️⤴️📈📈⤴️
Display 0 0 ⤴️📈📈⤴️⤴️⤴️⤴️📈⤴️⤴️⤴️ 1 ⤴️📈⤴️⤴️📈⤴️⤴️⤴️⤴️📈📈⤴️⤴️📈📈⤴️
Display 1 0 ⤴️📈📈⤴️⤴️⤴️⤴️📈⤴️⤴️⤴️ 1 ⤴️📈⤴️⤴️📈⤴️⤴️⤴️⤴️📈📈⤴️⤴️📈📈⤴️
Display 2 0 ⤴️📈📈⤴️⤴️⤴️⤴️📈⤴️⤴️⤴️ 1 ⤴️📈⤴️⤴️📈⤴️⤴️⤴️⤴️📈📈⤴️⤴️📈📈⤴️
   Text 0 0 ⤴️📈📈⤴️⤴️⤴️⤴️📈⤴️⤴️⤴️ 1 ⤴️📈⤴️⤴️📈⤴️⤴️⤴️⤴️📈📈⤴️⤴️📈📈⤴️
   Text 1 0 ⤴️📈📈⤴️⤴️⤴️⤴️📈⤴️⤴️⤴️ 1 ⤴️📈⤴️⤴️📈📈⤴️⤴️⤴️⤴️📈📈⤴️⤴️📈📈⤴️
   Text 2 0 ⤴️📈📈⤴️⤴️⤴️⤴️📈⤴️⤴️⤴️ 1 ⤴️📈⤴️⤴️📈⤴️⤴️⤴️⤴️📈📈⤴️⤴️📈📈⤴️


'''


def segment_structure(g):
    '''
    simple segment structure string for comparison

    '''
    structure = ''
    for c_index, contour in enumerate(g.contours):
        structure += f' {str(c_index)} '
        for segment in contour.segments:
            if len(segment) == 3:
                structure += '⤴️'
            else:
                structure += '📈'
    return structure.strip()


cg = CurrentGlyph()
a = AllFonts(sortOptions=['familyName', 'styleName'])

structure_set = []
style_names = []

for f in a:
    g = f[cg.name]
    structure_set.append(segment_structure(g))
    style_names.append((len(f.info.styleName), f.info.styleName))

if len(set(structure_set)) > 1:
    max_name = max(style_names)[0]
    for f in a:
        g = f[cg.name]
        print(f.info.styleName.rjust(max_name), segment_structure(g))
else:
    print(cg.name, structure_set[0], '✔')