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60 lines
1.5 KiB
60 lines
1.5 KiB
// Convert input options to more useable format
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// and compile search regexp
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'use strict';
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function quoteRE(str) {
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return str.replace(/[.?*+^$[\]\\(){}|-]/g, '\\$&');
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}
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module.exports = function normalize_opts(options) {
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var emojies = options.defs,
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shortcuts;
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// Filter emojies by whitelist, if needed
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if (options.enabled.length) {
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emojies = Object.keys(emojies).reduce(function (acc, key) {
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if (options.enabled.indexOf(key) >= 0) {
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acc[key] = emojies[key];
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}
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return acc;
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}, {});
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}
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// Flatten shortcuts to simple object: { alias: emoji_name }
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shortcuts = Object.keys(options.shortcuts).reduce(function (acc, key) {
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// Skip aliases for filtered emojies, to reduce regexp
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if (!emojies[key]) { return acc; }
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if (Array.isArray(options.shortcuts[key])) {
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options.shortcuts[key].forEach(function (alias) {
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acc[alias] = key;
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});
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return acc;
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}
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acc[options.shortcuts[key]] = key;
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return acc;
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}, {});
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// Compile regexp
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var names = Object.keys(emojies)
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.map(function (name) { return ':' + name + ':'; })
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.concat(Object.keys(shortcuts))
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.sort()
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.reverse()
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.map(function (name) { return quoteRE(name); })
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.join('|');
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var scanRE = RegExp(names);
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var replaceRE = RegExp(names, 'g');
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return {
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defs: emojies,
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shortcuts: shortcuts,
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scanRE: scanRE,
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replaceRE: replaceRE
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};
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};
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