author | bpb |
Mon, 04 Nov 2019 11:05:10 -0800 | |
changeset 58919 | 1d1f9c43138f |
parent 53228 | e7738fd1c974 |
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// |
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// Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. |
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// DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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// |
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// This code is free software; you can redistribute it and/or modify it |
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// under the terms of the GNU General Public License version 2 only, as |
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// published by the Free Software Foundation. |
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// |
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// This code is distributed in the hope that it will be useful, but WITHOUT |
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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// version 2 for more details (a copy is included in the LICENSE file that |
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// accompanied this code). |
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// |
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// You should have received a copy of the GNU General Public License version |
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// 2 along with this work; if not, write to the Free Software Foundation, |
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// Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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// |
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// Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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// or visit www.oracle.com if you need additional information or have any |
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// questions. |
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// |
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|
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// |
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// Traverse a tree of pandoc format objects, calling callback on each |
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// element, and replacing it if callback returns a new object. |
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// |
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// Inspired by the walk method in |
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// https://github.com/jgm/pandocfilters/blob/master/pandocfilters.py |
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// |
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function traverse(obj, callback) { |
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if (Array.isArray(obj)) { |
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var processed_array = []; |
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obj.forEach(function(elem) { |
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if (elem === Object(elem) && elem.t) { |
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var replacement = callback(elem.t, elem.c || []); |
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if (!replacement) { |
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// no replacement object returned, use original |
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processed_array.push(traverse(elem, callback)); |
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} else if (Array.isArray(replacement)) { |
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// array of objects returned, splice all elements into array |
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replacement.forEach(function(repl_elem) { |
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processed_array.push(traverse(repl_elem, callback)); |
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}) |
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} else { |
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// replacement object given, traverse it |
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processed_array.push(traverse(replacement, callback)); |
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} |
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} else { |
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processed_array.push(traverse(elem, callback)); |
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} |
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}) |
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return processed_array; |
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} else if (obj === Object(obj)) { |
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if (obj.t) { |
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var replacement = callback(obj.t, obj.c || []); |
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if (replacement) { |
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return replacement; |
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} |
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} |
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var processed_obj = {}; |
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Object.keys(obj).forEach(function(key) { |
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processed_obj[key] = traverse(obj[key], callback); |
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}) |
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return processed_obj; |
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} else { |
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return obj; |
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} |
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} |
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// |
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// Helper constructors to create pandoc format objects |
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// |
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function Space() { |
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return { 't': 'Space' }; |
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} |
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function Str(value) { |
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return { 't': 'Str', 'c': value }; |
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} |
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function MetaInlines(value) { |
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return { 't': 'MetaInlines', 'c': value }; |
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} |
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function change_title(type, value) { |
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if (type === 'MetaInlines') { |
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if (value[0].t === 'Str') { |
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var match = value[0].c.match(/^([A-Z0-9]+)\([0-9]+\)$/); |
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if (match) { |
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return MetaInlines([ |
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Str("The"), Space(), |
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Str(match[1].toLowerCase()), |
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Space(), Str("Command") |
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]); |
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} |
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} |
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} |
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} |
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// |
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// Main function |
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// |
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function main() { |
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var input = ""; |
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while (line = readLine()) { |
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input = input.concat(line); |
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} |
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var json = JSON.parse(input); |
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var meta = json.meta; |
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if (meta) { |
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meta.date = undefined; |
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var title = meta.title; |
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if (meta.title) { |
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meta.title = traverse(meta.title, change_title); |
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} |
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} |
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print(JSON.stringify(json)); |
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} |
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// ... and execute it |
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main(); |