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util.js
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util.js
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function main(configuration) {
var config = configuration,
chalk = require('chalk'),
success = chalk.green,
info = chalk.cyan,
REPLACEMENT_CHARACTER = '\uFFFD',
TOKEN_CHARACTER = '\u00A7',
REGEX_COMMENT = /\/\*(.|\s)*?\*\//gm,
REGEX_FUNCTION = /\([^\(\)]+\)/i,
REGEX_TOKEN = new RegExp(TOKEN_CHARACTER + '(\\d+)', 'i'),
REGEX_COMPLEMENT = new RegExp('(calc' + TOKEN_CHARACTER + '\\d+)|(\\-?(\\d*?\\.\\d+|\\d+))(?!d\\()' ,'i'),
REGEX_NEGATE_ONE = new RegExp('(calc' + TOKEN_CHARACTER + '\\d+)|(\\-?(\\d*?\\.\\d+|\\d+))(?!d\\()' ,'i'),
REGEX_NEGATE_ALL = new RegExp('(calc' + TOKEN_CHARACTER + '\\d+)|(\\-?(\\d*?\\.\\d+|\\d+))(?!d\\()' ,'ig'),
DEFAULT_STRING_MAP_OPTIONS = { scope: '*', ignoreCase: true },
compare = function (what, to, ignoreCase) {
if (ignoreCase) {
return what.toLowerCase() === to.toLowerCase();
}
return what === to;
},
extend = function (dest, src) {
if (typeof dest === 'undefined' || typeof dest !== 'object') {
dest = {};
}
for (var prop in src) {
if (!dest.hasOwnProperty(prop)) {
dest[prop] = src[prop];
}
}
return dest;
},
escapeRegExp = function(string){
return string.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
}
;
var util =
{
log: function () {
if (config.enableLogging)
console.log.apply(this, this.log.arguments);
},
logRuleAction: function (rule, pi) {
this.log("Rule:\t%s",
info(rule.selector));
this.log("Action:\t%s",
success(pi.name));
this.logSource(rule.source);
},
logDeclAction: function (decl, pi) {
this.log("Decl:\t%s",
info(decl.prop));
this.log("Action:\t%s",
success(pi.name));
this.logSource(decl.source);
},
logPropAction: function (decl, result, pi) {
this.log("Prop:\t%s",
info(decl.prop));
this.log("Action:\t%s",
success("flip " + pi.name));
this.logSource(decl.source);
},
logSource: function (source) {
this.log("Source:\t%s\t%s:%s",
info(source.file),
info(source.start.line),
info(source.start.column));
},
swap: function (value, a, b, options) {
var expr = escapeRegExp(a) + "|" + escapeRegExp(b);
options = options || DEFAULT_STRING_MAP_OPTIONS;
var greedy = options.hasOwnProperty('greedy') ? options.greedy : config.greedy;
if (!greedy) {
expr = "\\b(" + expr + ")\\b";
}
var flags = options.ignoreCase ? "img" : "mg";
return value.replace(new RegExp(expr, flags), function (m) { return compare(m, a, options.ignoreCase) ? b : a; });
},
swapLeftRight: function (value) {
return this.swap(value, "left", "right");
},
swapLtrRtl: function (value) {
return this.swap(value, "ltr", "rtl");
},
applyStringMap: function (value, inSelector, inUrl) {
var result = value;
for (var x = 0; x < config.stringMap.length; x++) {
var map = config.stringMap[x];
var options = extend(map.options, DEFAULT_STRING_MAP_OPTIONS);
if (options.scope === '*' || (inSelector && options.scope == 'selector') || (inUrl && options.scope == 'url')) {
this.log(info('Applying string map: ' + (map.name || "<unknown>") + '.'));
if (map.search instanceof Array && map.replace instanceof Array) {
for (var mapIndex = 0; mapIndex < map.search.length; mapIndex++) {
result = util.swap(result, map.search[mapIndex], map.replace[mapIndex % map.search.length], options);
}
} else {
result = util.swap(result, map.search, map.replace, options);
}
}
}
return result;
},
comments: [],
saveComments: function (value) {
var self = this;
return value.replace(REGEX_COMMENT, function (c) { self.comments.push(c); return REPLACEMENT_CHARACTER; });
},
restoreComments: function (value) {
var self = this;
return value.replace(new RegExp(REPLACEMENT_CHARACTER, 'g'), function () { return self.comments.shift(); });
},
negate: function (value) {
return value.replace(REGEX_NEGATE_ONE, function (num) {
return REGEX_TOKEN.test(num) ? num.replace(REGEX_TOKEN, function(m){ return '(-1*'+ m + ')';}) : parseFloat(num, 10) * -1;
});
},
negateAll: function (value) {
return value.replace(REGEX_NEGATE_ALL, function (num) {
return REGEX_TOKEN.test(num) ? num.replace(REGEX_TOKEN, function(m){ return '(-1*'+ m + ')';}) : parseFloat(num, 10) * -1;
});
},
complement: function (value) {
return value.replace(REGEX_COMPLEMENT, function (num) {
return REGEX_TOKEN.test(num) ? num.replace(REGEX_TOKEN, function(m){ return '(100%-'+ m + ')';}) : 100 - parseFloat(num, 10);
});
},
saveFunctions: function (value) {
var store = [];
while(REGEX_FUNCTION.test(value))
value = value.replace(REGEX_FUNCTION, function (m) { store.push(m); return TOKEN_CHARACTER + store.length; });
return { store: store, value: value };
},
restoreFunctions:function (result) {
while (REGEX_TOKEN.test(result.value))
result.value = result.value.replace(REGEX_TOKEN, function (m, i) { return result.store[i - 1]; });
return result.value
},
regex:function(what, options){
what = what || [];
var expressions = [];
for(var x=0;x<what.length;x++){
var match = '';
switch(what[x]){
case 'percent':
expressions.push('(\\-?(\\d*?\\.\\d+|\\d+)%)');
break;
case 'length':
expressions.push('(\\-?(\\d*?\\.\\d+|\\d+))(?:ex|ch|r?em|vh|vw|vmin|vmax|px|mm|cm|in|pt|pc)?');
break;
case 'number':
expressions.push('(\\-?(\\d*?\\.\\d+|\\d+))');
break;
case 'position':
expressions.push('(left|center|right|top|bottom)');
break;
case 'calc':
expressions.push('(calc' + TOKEN_CHARACTER + '\\d+)');
break;
}
}
return new RegExp(expressions.join('|'), options);
},
};
return util;
}
module.exports.configure = main;