Access path index to check master compatibility in a script

Scripting
1

Is there a way to access the path index(?) to check if the masters are compatible through a script?

2

I do not understand what you mean. Why do you want to check for path indexes in order to see if a glyph is compatible?

You can check for layer compatibility with a layer’s compare string:
http://docu.glyphsapp.com/#compareString

Is that what you need?

3

I know of compareString and i also tried mastersCompatible but they don’t take the path order into account. Even if i change the path order through fix compatibility filter i’ll still get the same string with compareString and mastersCompatible returns True regardless the path order.

4

How do you change the path order?

To answer you question: the layer has a property layer.indexOfPath_(path)

5

With correct path direction. But it sometimes fails to sort the paths.

Thanks!

6

I found two properties for the components, are they equal?

layer.indexOfObjectInComponents_(component)

component.index

7

Why don’t you just try?

for i, component in enumerate(Layer.components):
    index1 = Layer.indexOfObjectInComponents_(component)
    index2 = component.index
    if index1 == index2:
        print "%i: same index: %i = %i" % (i, index1, index2)
    else:
        print "%i: DIFFERENT: %i != %i" % (i, index1, index2)

Open a glyph with many components, and run this from your Macro window.

8

I was wondering if they are doing something different under the hood, but i guess as long as the result is the same it doesn’t matter. Thanks :wink: