font-awesome-assets
Version:
Convert any of @FortAwesome's Font-Awesome icons to an asset, such as an <svg> tag or a Base64-encoded PNG/SVG <img> tag! It supports Retina devices and custom tag attributes too! This package was built for @CrocodileJS.
169 lines (129 loc) • 18.6 kB
JavaScript
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.iconsByUnicodeHex = exports.icons = exports.aliases = undefined;
exports.svg = svg;
exports.img = img;
exports.png = png;
exports.png2x = png2x;
exports.png3x = png3x;
var _cheerio = require('cheerio');
var _cheerio2 = _interopRequireDefault(_cheerio);
var _svg2png = require('svg2png');
var _svg2png2 = _interopRequireDefault(_svg2png);
var _lodash = require('lodash');
var _lodash2 = _interopRequireDefault(_lodash);
var _svgfont2js = require('@ladjs/svgfont2js');
var _svgfont2js2 = _interopRequireDefault(_svgfont2js);
var _fs = require('fs');
var _fs2 = _interopRequireDefault(_fs);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function applyAttributes($el, attrs) {
// [ [ attr, val ], ... ]
if (!_lodash2.default.isArray(attrs) || attrs.length === 0) return $el;
var hasMissing = _lodash2.default.some(attrs, function (pair) {
return !_lodash2.default.isArray(pair) || pair.length !== 2;
});
if (hasMissing) throw new Error('attribute pairs must be arrays with two keys [ attr, val ]');
_lodash2.default.each(attrs, function (pair) {
$el.attr(pair[0], pair[1]);
});
return $el;
}
// inspired by <https://github.com/riobard/font-awesome-svg/blob/master/extract.js>
function loadAliases(less) {
var pairs = _lodash2.default.compact(_lodash2.default.map(less.split('\n'), function (line) {
// line is `@fa-var-dropbox: "\f16b";`
if (line.indexOf('@fa-var-') !== 0) return;
// now it is `dropbox: "\f16b";`
line = line.split('@fa-var-', 2)[1];
// split the line by the `: ` delimiter
line = line.split(': ');
// now we have a line array that looks like:
// [0] = `dropbox`
// [1] = "\f16b";`
// clean up the first key
line[1] = line[1].split('"')[1].substring(1);
return { name: line[0], unicode: line[1] };
}));
return _lodash2.default.zipObject(_lodash2.default.map(pairs, 'name'), _lodash2.default.map(pairs, 'unicode'));
}
var aliases = exports.aliases = loadAliases(_fs2.default.readFileSync(require.resolve('font-awesome/less/variables.less'), 'utf8'));
var icons = exports.icons = (0, _svgfont2js2.default)(_fs2.default.readFileSync(require.resolve('font-awesome/fonts/fontawesome-webfont.svg'), 'utf8'));
var iconsByUnicodeHex = exports.iconsByUnicodeHex = _lodash2.default.zipObject(_lodash2.default.map(icons, 'unicode_hex'), icons);
function svg(name, color, width, height, attrs) {
// set defaults
name = name || 'smile-o';
color = color || '#000';
width = (width || '100%').toString();
height = (height || '100%').toString();
// check variable types
if (!_lodash2.default.isString(name)) throw new Error('fa.svg `name` must be a String');
if (!_lodash2.default.isString(color)) throw new Error('fa.svg `color` must be a String');
// convert name to lowercase
name = name.toLowerCase();
// remove "fa-" prefix from name if it exists
if (name.indexOf('fa-') === 0) name = name.substring(3);
// ensure that the font exists, otherwise throw an error
if (!_lodash2.default.isString(aliases[name])) throw new Error('fa.svg name "' + name + '" must be a valid FontAwesome icon name');
// get the icon svg information
var icon = iconsByUnicodeHex[aliases[name]];
// ensure that the font svg exists, otherwise throw an error
if (!_lodash2.default.isObject(icon)) throw new Error('fa.svg name "' + name + '" was missing its font SVG value parsed');
// return the svg
var $svg = (0, _cheerio2.default)('<svg>', {
xmlMode: true
});
$svg.attr('xmlns', 'http://www.w3.org/2000/svg');
$svg.attr('width', width);
$svg.attr('height', height);
$svg.attr('viewBox', '0 0 ' + icon.width + ' ' + icon.height);
$svg = applyAttributes($svg, attrs);
$svg.append('<path fill="' + color + '" d="' + icon.path + '" />');
return _cheerio2.default.html($svg);
}
function img(name, color, width, height, attrs) {
var str = svg(name, color);
var $img = (0, _cheerio2.default)('<img>');
$img.attr('width', width);
$img.attr('height', height);
$img.attr('src', 'data:image/svg+xml;base64,' + new Buffer(str, 'binary').toString('base64'));
$img = applyAttributes($img, attrs);
return _cheerio2.default.html($img);
}
function png(name, color, width, height, attrs, size) {
var str = svg(name, color);
width = parseInt(width, 10) || 16;
height = parseInt(height, 10) || 16;
size = parseInt(size, 10) || 1;
if (!_lodash2.default.isNumber(width)) throw new Error('fa.png width must be a number');
if (!_lodash2.default.isNumber(height)) throw new Error('fa.png height must be a number');
str = _svg2png2.default.sync(new Buffer(str, 'utf8'), {
width: parseInt(width * size, 10),
height: parseInt(height * size, 10)
});
var $img = (0, _cheerio2.default)('<img>');
$img.attr('width', width);
$img.attr('height', height);
$img.attr('src', 'data:image/png;base64,' + str.toString('base64'));
$img = applyAttributes($img, attrs);
return _cheerio2.default.html($img);
}
function png2x(name, color, width, height, attrs) {
return png(name, color, width, height, attrs, 2);
}
function png3x(name, color, width, height, attrs) {
return png(name, color, width, height, attrs, 3);
}
exports.default = {
aliases: aliases,
icons: icons,
iconsByUnicodeHex: iconsByUnicodeHex,
img: img,
svg: svg,
png: png,
png2x: png2x,
png3x: png3x
};
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$ from 'cheerio';\nimport svg2png from 'svg2png';\nimport _ from 'lodash';\nimport svgfont2js from '@ladjs/svgfont2js';\nimport fs from 'fs';\n\nfunction applyAttributes($el, attrs) {\n  // [ [ attr, val ], ... ]\n  if (!_.isArray(attrs) || attrs.length === 0)\n    return $el;\n  const hasMissing = _.some(attrs, pair => {\n    return !_.isArray(pair) || pair.length !== 2;\n  });\n  if (hasMissing) throw new Error('attribute pairs must be arrays with two keys [ attr, val ]');\n  _.each(attrs, pair => {\n    $el.attr(pair[0], pair[1]);\n  });\n  return $el;\n}\n\n// inspired by <https://github.com/riobard/font-awesome-svg/blob/master/extract.js>\n\nfunction loadAliases(less) {\n\n  const pairs = _.compact(_.map(less.split('\\n'), line => {\n\n    // line is `@fa-var-dropbox: \"\\f16b\";`\n    if (line.indexOf('@fa-var-') !== 0) return;\n\n    // now it is `dropbox: \"\\f16b\";`\n    line = line.split('@fa-var-', 2)[1];\n\n    // split the line by the `: ` delimiter\n    line = line.split(': ');\n\n    // now we have a line array that looks like:\n    // [0] = `dropbox`\n    // [1] = \"\\f16b\";`\n\n    // clean up the first key\n    line[1] = line[1].split('\"')[1].substring(1);\n\n    return { name: line[0], unicode: line[1] };\n\n  }));\n\n  return _.zipObject(\n    _.map(pairs, 'name'),\n    _.map(pairs, 'unicode')\n  );\n\n}\n\nexport const aliases = loadAliases(\n  fs.readFileSync(\n    require.resolve('font-awesome/less/variables.less'),\n    'utf8'\n  )\n);\n\nexport const icons = svgfont2js(\n  fs.readFileSync(\n    require.resolve('font-awesome/fonts/fontawesome-webfont.svg'),\n    'utf8'\n  )\n);\n\nexport const iconsByUnicodeHex = _.zipObject(\n  _.map(icons, 'unicode_hex'),\n  icons\n);\n\nexport function svg(name, color, width, height, attrs) {\n\n  // set defaults\n  name = name || 'smile-o';\n  color = color || '#000';\n  width = (width || '100%').toString();\n  height = (height || '100%').toString();\n\n  // check variable types\n  if (!_.isString(name)) throw new Error('fa.svg `name` must be a String');\n  if (!_.isString(color)) throw new Error('fa.svg `color` must be a String');\n\n  // convert name to lowercase\n  name = name.toLowerCase();\n\n  // remove \"fa-\" prefix from name if it exists\n  if (name.indexOf('fa-') === 0)\n    name = name.substring(3);\n\n  // ensure that the font exists, otherwise throw an error\n  if (!_.isString(aliases[name]))\n    throw new Error(`fa.svg name \"${name}\" must be a valid FontAwesome icon name`);\n\n  // get the icon svg information\n  const icon = iconsByUnicodeHex[aliases[name]];\n\n  // ensure that the font svg exists, otherwise throw an error\n  if (!_.isObject(icon))\n    throw new Error(`fa.svg name \"${name}\" was missing its font SVG value parsed`);\n\n  // return the svg\n  let $svg = $('<svg>', {\n    xmlMode: true\n  });\n  $svg.attr('xmlns', 'http://www.w3.org/2000/svg');\n  $svg.attr('width', width);\n  $svg.attr('height', height);\n  $svg.attr('viewBox', `0 0 ${icon.width} ${icon.height}`);\n  $svg = applyAttributes($svg, attrs);\n  $svg.append(`<path fill=\"${color}\" d=\"${icon.path}\" />`);\n  return $.html($svg);\n\n}\n\nexport function img(name, color, width, height, attrs) {\n  const str = svg(name, color);\n  let $img = $('<img>');\n  $img.attr('width', width);\n  $img.attr('height', height);\n  $img.attr('src', `data:image/svg+xml;base64,${new Buffer(str, 'binary').toString('base64')}`);\n  $img = applyAttributes($img, attrs);\n  return $.html($img);\n}\n\nexport function png(name, color, width, height, attrs, size) {\n  let str = svg(name, color);\n  width = parseInt(width, 10) || 16;\n  height = parseInt(height, 10) || 16;\n  size = parseInt(size, 10) || 1;\n  if (!_.isNumber(width)) throw new Error('fa.png width must be a number');\n  if (!_.isNumber(height)) throw new Error('fa.png height must be a number');\n  str = svg2png.sync(new Buffer(str, 'utf8'), {\n    width: parseInt(width * size, 10),\n    height: parseInt(height * size, 10)\n  });\n  let $img = $('<img>');\n  $img.attr('width', width);\n  $img.attr('height', height);\n  $img.attr('src', `data:image/png;base64,${str.toString('base64')}`);\n  $img = applyAttributes($img, attrs);\n  return $.html($img);\n}\n\nexport function png2x(name, color, width, height, attrs) {\n  return png(name, color, width, height, attrs, 2);\n}\n\nexport function png3x(name, color, width, height, attrs) {\n  return png(name, color, width, height, attrs, 3);\n}\n\nexport default {\n  aliases,\n  icons,\n  iconsByUnicodeHex,\n  img,\n  svg,\n  png,\n  png2x,\n  png3x\n};\n"]}