securityos/node_modules/clean-css/lib/optimizer/level-1/value-optimizers/whitespace.js

49 lines
1.5 KiB
JavaScript

var OptimizationLevel = require('../../../options/optimization-level').OptimizationLevel;
var Marker = require('../../../tokenizer/marker');
var CALC_DIVISION_WHITESPACE_PATTERN = /\) ?\/ ?/g;
var COMMA_AND_SPACE_PATTERN = /, /g;
var LINE_BREAK_PATTERN = /\r?\n/g;
var MULTI_WHITESPACE_PATTERN = /\s+/g;
var FUNCTION_CLOSING_BRACE_WHITESPACE_PATTERN = /\s+(;?\))/g;
var FUNCTION_OPENING_BRACE_WHITESPACE_PATTERN = /(\(;?)\s+/g;
var VARIABLE_NAME_PATTERN = /^--\S+$/;
var VARIABLE_VALUE_PATTERN = /^var\(\s*--\S+\s*\)$/;
var plugin = {
level1: {
value: function whitespace(name, value, options) {
if (!options.level[OptimizationLevel.One].removeWhitespace) {
return value;
}
if (VARIABLE_NAME_PATTERN.test(name) && !VARIABLE_VALUE_PATTERN.test(value)) {
return value;
}
if ((value.indexOf(' ') == -1 && value.indexOf('\n') == -1) || value.indexOf('expression') === 0) {
return value;
}
if (value.indexOf(Marker.SINGLE_QUOTE) > -1 || value.indexOf(Marker.DOUBLE_QUOTE) > -1) {
return value;
}
value = value.replace(LINE_BREAK_PATTERN, '');
value = value.replace(MULTI_WHITESPACE_PATTERN, ' ');
if (value.indexOf('calc') > -1) {
value = value.replace(CALC_DIVISION_WHITESPACE_PATTERN, ')/ ');
}
return value
.replace(FUNCTION_OPENING_BRACE_WHITESPACE_PATTERN, '$1')
.replace(FUNCTION_CLOSING_BRACE_WHITESPACE_PATTERN, '$1')
.replace(COMMA_AND_SPACE_PATTERN, ',');
}
}
};
module.exports = plugin;