143 lines
4.4 KiB
JavaScript
143 lines
4.4 KiB
JavaScript
//
|
|
// Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
|
|
// DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
//
|
|
// This code is free software; you can redistribute it and/or modify it
|
|
// under the terms of the GNU General Public License version 2 only, as
|
|
// published by the Free Software Foundation.
|
|
//
|
|
// This code is distributed in the hope that it will be useful, but WITHOUT
|
|
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
// version 2 for more details (a copy is included in the LICENSE file that
|
|
// accompanied this code).
|
|
//
|
|
// You should have received a copy of the GNU General Public License version
|
|
// 2 along with this work; if not, write to the Free Software Foundation,
|
|
// Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
//
|
|
// Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
// or visit www.oracle.com if you need additional information or have any
|
|
// questions.
|
|
//
|
|
|
|
//
|
|
// Traverse a tree of pandoc format objects, calling callback on each
|
|
// element, and replacing it if callback returns a new object.
|
|
//
|
|
// Inspired by the walk method in
|
|
// https://github.com/jgm/pandocfilters/blob/master/pandocfilters.py
|
|
//
|
|
function traverse(obj, callback) {
|
|
if (Array.isArray(obj)) {
|
|
var processed_array = [];
|
|
obj.forEach(function(elem) {
|
|
if (elem === Object(elem) && elem.t) {
|
|
var replacement = callback(elem.t, elem.c || []);
|
|
if (!replacement) {
|
|
// no replacement object returned, use original
|
|
processed_array.push(traverse(elem, callback));
|
|
} else if (Array.isArray(replacement)) {
|
|
// array of objects returned, splice all elements into array
|
|
replacement.forEach(function(repl_elem) {
|
|
processed_array.push(traverse(repl_elem, callback));
|
|
})
|
|
} else {
|
|
// replacement object given, traverse it
|
|
processed_array.push(traverse(replacement, callback));
|
|
}
|
|
} else {
|
|
processed_array.push(traverse(elem, callback));
|
|
}
|
|
})
|
|
return processed_array;
|
|
} else if (obj === Object(obj)) {
|
|
var processed_obj = {};
|
|
Object.keys(obj).forEach(function(key) {
|
|
processed_obj[key] = traverse(obj[key], callback);
|
|
})
|
|
return processed_obj;
|
|
} else {
|
|
return obj;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Helper constructors to create pandoc format objects
|
|
//
|
|
function Space() {
|
|
return { 't': 'Space', 'c': [] };
|
|
}
|
|
|
|
function Str(value) {
|
|
return { 't': 'Str', 'c': value };
|
|
}
|
|
|
|
function Strong(value) {
|
|
return { 't': 'Strong', 'c': value };
|
|
}
|
|
|
|
function Header(value) {
|
|
return { 't': 'Header', 'c': value };
|
|
}
|
|
|
|
//
|
|
// Callback to change all Str texts to upper case
|
|
//
|
|
function uppercase(type, value) {
|
|
if (type === 'Str') {
|
|
return Str(value.toUpperCase());
|
|
}
|
|
}
|
|
|
|
//
|
|
// Main callback function that performs our man page AST rewrites
|
|
//
|
|
function manpage_filter(type, value) {
|
|
// If it is a header, decrease the heading level by one, and
|
|
// if it is a level 1 header, convert it to upper case.
|
|
if (type === 'Header') {
|
|
value[0] = Math.max(1, value[0] - 1);
|
|
if (value[0] == 1) {
|
|
return Header(traverse(value, uppercase));
|
|
}
|
|
}
|
|
|
|
// Man pages does not have superscript. We use it for footnotes, so
|
|
// enclose in [...] for best representation.
|
|
if (type === 'Superscript') {
|
|
return [ Str('['), value[0], Str(']') ];
|
|
}
|
|
|
|
// If it is a link, put the link name in bold. If it is an external
|
|
// link, put it in brackets. Otherwise, it is either an internal link
|
|
// (like "#next-heading"), or a relative link to another man page
|
|
// (like "java.html"), so remove it for man pages.
|
|
if (type === 'Link') {
|
|
var target = value[2][0];
|
|
if (target.match(/^http[s]?:/)) {
|
|
return [ Strong(value[1]), Space(), Str('[' + target + ']') ];
|
|
} else {
|
|
return Strong(value[1]);
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
// Main function
|
|
//
|
|
function main() {
|
|
var input = "";
|
|
while (line = readLine()) {
|
|
input = input.concat(line);
|
|
}
|
|
var json = JSON.parse(input);
|
|
|
|
var transformed_json = traverse(json, manpage_filter);
|
|
|
|
print(JSON.stringify(transformed_json));
|
|
}
|
|
|
|
// ... and execute it
|
|
main();
|