--- /dev/null
+"use strict";
+
+const report = require("../../utils/report");
+const ruleMessages = require("../../utils/ruleMessages");
+const styleSearch = require("style-search");
+const validateOptions = require("../../utils/validateOptions");
+
+const ruleName = "color-no-hex";
+
+const messages = ruleMessages(ruleName, {
+ rejected: hex => `Unexpected hex color "${hex}"`
+});
+
+const rule = function(actual) {
+ return (root, result) => {
+ const validOptions = validateOptions(result, ruleName, { actual });
+ if (!validOptions) {
+ return;
+ }
+
+ root.walkDecls(decl => {
+ const declString = decl.toString();
+
+ styleSearch({ source: declString, target: "#" }, match => {
+ // If there's not a colon, comma, or whitespace character before, we'll assume this is
+ // not intended to be a hex color, but is instead something like the
+ // hash in a url() argument
+ if (!/[:,\s]/.test(declString[match.startIndex - 1])) {
+ return;
+ }
+
+ const hexMatch = /^#[0-9A-Za-z]+/.exec(
+ declString.substr(match.startIndex)
+ );
+ if (!hexMatch) {
+ return;
+ }
+ const hexValue = hexMatch[0];
+
+ report({
+ message: messages.rejected(hexValue),
+ node: decl,
+ index: match.startIndex,
+ result,
+ ruleName
+ });
+ });
+ });
+ };
+};
+
+rule.ruleName = ruleName;
+rule.messages = messages;
+module.exports = rule;