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require "json" |
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require "base64" |
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require_relative "file_fetcher" |
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require_relative "file_system" |
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module Resume |
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module CLI |
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module ContentParser |
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ASSET_PATH = /dropbox/ |
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private_constant :ASSET_PATH |
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# Regex taken from http://stackoverflow.com/q/8571501/567863 |
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BASE64_STRING_REGEX = %r{\A |
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([A-Za-z0-9+/]{4})* |
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([A-Za-z0-9+/]{4}|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==) |
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\z}x |
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private_constant :BASE64_STRING_REGEX |
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module_function |
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def decode_content(string) |
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# Force encoding to UTF-8 is needed for strings that had UTF-8 |
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# characters in them when they were originally encoded |
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Base64.strict_decode64(string).force_encoding("utf-8") |
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end |
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def parse(resume) |
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JSON.recurse_proc(resume, &decode_and_fetch_assets) |
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end |
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# Values that need parsing can be found in hash and array values |
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# in the JSON, so specifically target those data types for |
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# manipulation, and ignore any direct references given to the |
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# keys or values of the JSON hash. |
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def decode_and_fetch_assets |
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proc do |object| |
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case object |
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when Hash |
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parse_hash(object) |
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when Array |
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parse_array(object) |
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else |
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object |
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end |
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end |
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end |
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private_class_method :decode_and_fetch_assets |
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def parse_hash(hash) |
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hash.each do |key, value| |
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if value =~ BASE64_STRING_REGEX |
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value = decode_content(value) |
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end |
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if value =~ ASSET_PATH |
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hash[key] = FileFetcher.fetch(value) |
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next |
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end |
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munge_hash_value(hash, key, value) |
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end |
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end |
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private_class_method :parse_hash |
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def munge_hash_value(hash, key, value) |
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if key == :align |
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# Prawn specifically requires :align values to |
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# be symbols otherwise it errors out |
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hash[key] = value.to_sym |
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elsif key == :styles && value.is_a?(Array) |
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# Prawn specifically requires :styles values to |
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# be symbols otherwise the styles do not take effect |
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hash[key] = value.map!(&:to_sym) |
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elsif key == :font && value.is_a?(Hash) |
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# This is the hash that tells Prawn what the fonts to be used |
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# are called and where they are located |
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substitute_filenames_for_filepaths(value) |
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else |
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hash[key] = value |
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end |
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end |
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private_class_method :munge_hash_value |
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def substitute_filenames_for_filepaths(value) |
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%i(normal bold).each do |property| |
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if value.key?(property) |
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value[property] = FileSystem.tmpfile_path(value[property]) |
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end |
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end |
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end |
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private_class_method :substitute_filenames_for_filepaths |
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def parse_array(array) |
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array.each_with_index do |value, index| |
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if value =~ BASE64_STRING_REGEX |
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array[index] = decode_content(value) |
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end |
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end |
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end |
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private_class_method :parse_array |
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end |
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end |
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end |
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