47 lines
1.3 KiB
Ruby
47 lines
1.3 KiB
Ruby
require 'rexml/document'
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# This script is for setting environment variables in OSX applications.
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#
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# This script takes two arguments:
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# 1) A Nix attrset serialized via `builtins.toXML'
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# 2) The path to an OSX app's Info.plist file.
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def main(serialized_attrs, plist_path)
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env = attrs_to_hash(serialized_attrs)
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doc = REXML::Document.new(File.open(plist_path, &:read))
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topmost_dict = doc.root.elements.detect { |e| e.name == "dict" }
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topmost_dict.add_element("key").tap do |key|
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key.text = "LSEnvironment"
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end
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topmost_dict.add_element(env_to_dict(env))
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formatter = REXML::Formatters::Pretty.new(2)
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formatter.compact = true
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formatter.write(doc, File.open(plist_path, "w"))
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end
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# Convert a `builtins.toXML' serialized attrs to a hash.
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# This assumes the values are strings.
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def attrs_to_hash(serialized_attrs)
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hash = {}
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env_vars = REXML::Document.new(serialized_attrs)
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env_vars.root.elements[1].elements.each do |attr|
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name = attr.attribute("name")
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value = attr.elements.first.attribute("value")
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hash[name] = value
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end
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hash
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end
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def env_to_dict(env)
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dict = REXML::Element.new("dict")
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env.each do |k, v|
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key = dict.add_element("key")
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key.text = k
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string = dict.add_element("string")
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string.text = v
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end
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dict
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end
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main(ARGV[0], ARGV[1])
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