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terminal-cv/node_modules/svgo/plugins/convertStyleToAttrs.js

132 lines
3.7 KiB

'use strict';
exports.name = 'convertStyleToAttrs';
exports.type = 'perItem';
exports.active = false;
exports.description = 'converts style to attributes';
exports.params = {
keepImportant: false,
};
var stylingProps = require('./_collections').attrsGroups.presentation,
rEscape = '\\\\(?:[0-9a-f]{1,6}\\s?|\\r\\n|.)', // Like \" or \2051. Code points consume one space.
rAttr = '\\s*(' + g('[^:;\\\\]', rEscape) + '*?)\\s*', // attribute name like ‘fill’
rSingleQuotes = "'(?:[^'\\n\\r\\\\]|" + rEscape + ")*?(?:'|$)", // string in single quotes: 'smth'
rQuotes = '"(?:[^"\\n\\r\\\\]|' + rEscape + ')*?(?:"|$)', // string in double quotes: "smth"
rQuotedString = new RegExp('^' + g(rSingleQuotes, rQuotes) + '$'),
// Parentheses, E.g.: url(data:image/png;base64,iVBO...).
// ':' and ';' inside of it should be threated as is. (Just like in strings.)
rParenthesis =
'\\(' + g('[^\'"()\\\\]+', rEscape, rSingleQuotes, rQuotes) + '*?' + '\\)',
// The value. It can have strings and parentheses (see above). Fallbacks to anything in case of unexpected input.
rValue =
'\\s*(' +
g(
'[^!\'"();\\\\]+?',
rEscape,
rSingleQuotes,
rQuotes,
rParenthesis,
'[^;]*?'
) +
'*?' +
')',
// End of declaration. Spaces outside of capturing groups help to do natural trimming.
rDeclEnd = '\\s*(?:;\\s*|$)',
// Important rule
rImportant = '(\\s*!important(?![-(\\w]))?',
// Final RegExp to parse CSS declarations.
regDeclarationBlock = new RegExp(
rAttr + ':' + rValue + rImportant + rDeclEnd,
'ig'
),
// Comments expression. Honors escape sequences and strings.
regStripComments = new RegExp(
g(rEscape, rSingleQuotes, rQuotes, '/\\*[^]*?\\*/'),
'ig'
);
/**
* Convert style in attributes. Cleanups comments and illegal declarations (without colon) as a side effect.
*
* @example
* <g style="fill:#000; color: #fff;">
* ⬇
* <g fill="#000" color="#fff">
*
* @example
* <g style="fill:#000; color: #fff; -webkit-blah: blah">
* ⬇
* <g fill="#000" color="#fff" style="-webkit-blah: blah">
*
* @param {Object} item current iteration item
* @return {Boolean} if false, item will be filtered out
*
* @author Kir Belevich
*/
exports.fn = function (item, params) {
if (item.type === 'element' && item.attributes.style != null) {
// ['opacity: 1', 'color: #000']
let styles = [];
const newAttributes = {};
// Strip CSS comments preserving escape sequences and strings.
const styleValue = item.attributes.style.replace(
regStripComments,
(match) => {
return match[0] == '/'
? ''
: match[0] == '\\' && /[-g-z]/i.test(match[1])
? match[1]
: match;
}
);
regDeclarationBlock.lastIndex = 0;
// eslint-disable-next-line no-cond-assign
for (var rule; (rule = regDeclarationBlock.exec(styleValue)); ) {
if (!params.keepImportant || !rule[3]) {
styles.push([rule[1], rule[2]]);
}
}
if (styles.length) {
styles = styles.filter(function (style) {
if (style[0]) {
var prop = style[0].toLowerCase(),
val = style[1];
if (rQuotedString.test(val)) {
val = val.slice(1, -1);
}
if (stylingProps.includes(prop)) {
newAttributes[prop] = val;
return false;
}
}
return true;
});
Object.assign(item.attributes, newAttributes);
if (styles.length) {
item.attributes.style = styles
.map((declaration) => declaration.join(':'))
.join(';');
} else {
delete item.attributes.style;
}
}
}
};
function g() {
return '(?:' + Array.prototype.join.call(arguments, '|') + ')';
}