//+
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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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        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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//+
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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', 'c': [] };+
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}+
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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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+
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function Strong(value) {+
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    return { 't': 'Strong', 'c': value };+
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}+
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+
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function Header(value) {+
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    return { 't': 'Header', 'c': value };+
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}+
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+
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//+
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// Callback to change all Str texts to upper case+
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//+
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function uppercase(type, value) {+
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    if (type === 'Str') {+
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        return Str(value.toUpperCase());+
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    }+
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}+
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+
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//+
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// Main callback function that performs our man page AST rewrites+
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//+
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function manpage_filter(type, value) {+
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    // If it is a header, decrease the heading level by one, and+
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    // if it is a level 1 header, convert it to upper case.+
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    if (type === 'Header') {+
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        value[0] = Math.max(1, value[0] - 1);+
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        if (value[0] == 1) {+
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            return Header(traverse(value, uppercase));+
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        }+
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    }+
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+
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    // Man pages does not have superscript. We use it for footnotes, so+
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    // enclose in [...] for best representation.+
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    if (type === 'Superscript') {+
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        return [ Str('['), value[0], Str(']') ];+
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    }+
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+
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    // If it is a link, put the link name in bold. If it is an external+
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    // link, put it in brackets. Otherwise, it is either an internal link+
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    // (like "#next-heading"), or a relative link to another man page+
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    // (like "java.html"), so remove it for man pages.+
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    if (type === 'Link') {+
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        var target = value[2][0];+
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        if (target.match(/^http[s]?:/)) {+
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            return [ Strong(value[1]), Space(), Str('[' + target + ']') ];+
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        } else {+
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            return Strong(value[1]);+
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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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+
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    var transformed_json = traverse(json, manpage_filter);+
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+
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    print(JSON.stringify(transformed_json));+
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}+
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+
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// ... and execute it+
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main();+
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