73 lines
2.3 KiB
Ruby
73 lines
2.3 KiB
Ruby
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# frozen_string_literal: true
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module IpynbDiff
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# Transforms Jupyter output data into markdown
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class OutputTransformer
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require 'symbolized_markdown_helper'
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include SymbolizedMarkdownHelper
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HIDDEN_IMAGE_OUTPUT = ' [Hidden Image Output]'
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ORDERED_KEYS = {
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'execute_result' => %w[image/png image/svg+xml image/jpeg text/markdown text/latex text/plain],
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'display_data' => %w[image/png image/svg+xml image/jpeg text/markdown text/latex],
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'stream' => %w[text]
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}.freeze
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def initialize(hide_images = false)
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@hide_images = hide_images
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end
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def transform(output, symbol)
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case (output_type = output['output_type'])
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when 'error'
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transform_error(output['traceback'], symbol / 'traceback')
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when 'execute_result', 'display_data'
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transform_non_error(ORDERED_KEYS[output_type], output['data'], symbol / 'data')
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when 'stream'
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transform_element('text', output['text'], symbol)
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end
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end
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def transform_error(traceback, symbol)
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traceback.map.with_index do |t, idx|
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t.split("\n").map do |l|
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_(symbol / idx, l.gsub(/\[[0-9][0-9;]*m/, '').sub("\u001B", ' ').gsub(/\u001B/, '').rstrip)
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end
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end
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end
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def transform_non_error(accepted_keys, elements, symbol)
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accepted_keys.filter { |key| elements.key?(key) }.map do |key|
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transform_element(key, elements[key], symbol)
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end
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end
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def transform_element(output_type, output_element, symbol_prefix)
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new_symbol = symbol_prefix / output_type
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case output_type
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when 'image/png', 'image/jpeg'
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transform_image(output_type + ';base64', output_element, new_symbol)
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when 'image/svg+xml'
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transform_image(output_type + ';utf8', output_element, new_symbol)
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when 'text/markdown', 'text/latex', 'text/plain', 'text'
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transform_text(output_element, new_symbol)
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end
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end
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def transform_image(image_type, image_content, symbol)
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return _(nil, HIDDEN_IMAGE_OUTPUT) if @hide_images
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lines = image_content.is_a?(Array) ? image_content : [image_content]
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single_line = lines.map(&:strip).join.gsub(/\s+/, ' ')
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_(symbol, " ")
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end
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def transform_text(text_content, symbol)
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symbolize_array(symbol, text_content) { |l| " #{l.rstrip}" }
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end
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end
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end
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