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3

How to add element to the gsettings array at the specific location (given by index)?

rated 0 times [ 3] [ 0] / answers: 1 / hits: 2338 / 2 Years ago, fri, may 6, 2022, 2:58:20

I want to write a script that translates devilspie's window rules into compiz' rules. Compiz settings can be changed by gsettings keys in path org.compiz.profiles.unity.plugins.place. There are three keys: viewport-matches, viewport-x-values and viewport-y-values. Unfortunately each key is an array, and the index of the elements matters.

Gsettings lacks any support of array types other than rewriting whole array at once, and I need to place item in the array at the specific location (say, at the beginning, index '1').

I know, that if I don't care about the index, I can use

gsettings set ${schema} ${key} "`gsettings get ${schema} ${key} | sed s/.$//`, ${value}]"

The question complements How to remove element from gsettings array in script?

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fieldcheon

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answered 2 Years ago ingwhin · Accepted Answer

The following python3 script will insert new element(s) at a given index:

#!/usr/bin/env python3



import argparse

import subprocess



parser = argparse.ArgumentParser()

parser.add_argument("schema", help="gsettings shema", metavar="SCHEMA")

parser.add_argument("key", help="gsettings key", metavar="KEY")

parser.add_argument("index",

                    help="KEY array index where VALUE(s) need to be inserted",

                    metavar="INDEX", type=int)

parser.add_argument("value",

                    help="gsettings VALUE(s) to add to the KEY array",

                    metavar="VALUE", nargs='*')



args = parser.parse_args()



array = eval(subprocess.check_output(["gsettings", "get", args.schema, args.key]))

for v in sorted(args.value, reverse=True):

    try:

        value = eval(v)

    except NameError:

        value = v

    array.insert(args.index, value)

subprocess.call(["gsettings", "set", args.schema, args.key, str(array)])