--- /dev/null
+"use strict";
+
+const _ = require("lodash");
+const atRuleParamIndex = require("../../utils/atRuleParamIndex");
+const declarationValueIndex = require("../../utils/declarationValueIndex");
+const isStandardSyntaxRule = require("../../utils/isStandardSyntaxRule");
+const parseSelector = require("../../utils/parseSelector");
+const report = require("../../utils/report");
+const ruleMessages = require("../../utils/ruleMessages");
+const validateOptions = require("../../utils/validateOptions");
+const valueParser = require("postcss-value-parser");
+
+const ruleName = "string-quotes";
+
+const messages = ruleMessages(ruleName, {
+ expected: q => `Expected ${q} quotes`
+});
+
+const singleQuote = `'`;
+const doubleQuote = `"`;
+
+const rule = function(expectation, secondary, context) {
+ const correctQuote = expectation === "single" ? singleQuote : doubleQuote;
+ const erroneousQuote = expectation === "single" ? doubleQuote : singleQuote;
+
+ return (root, result) => {
+ const validOptions = validateOptions(
+ result,
+ ruleName,
+ {
+ actual: expectation,
+ possible: ["single", "double"]
+ },
+ {
+ actual: secondary,
+ possible: {
+ avoidEscape: _.isBoolean
+ },
+ optional: true
+ }
+ );
+
+ if (!validOptions) {
+ return;
+ }
+
+ const avoidEscape = _.get(secondary, "avoidEscape", true);
+
+ root.walk(node => {
+ switch (node.type) {
+ case "atrule":
+ checkDeclOrAtRule(node, node.params, atRuleParamIndex);
+ break;
+ case "decl":
+ checkDeclOrAtRule(node, node.value, declarationValueIndex);
+ break;
+ case "rule":
+ checkRule(node);
+ break;
+ }
+ });
+
+ function checkRule(rule) {
+ if (!isStandardSyntaxRule(rule)) {
+ return;
+ }
+ if (
+ rule.selector.indexOf("[") === -1 ||
+ rule.selector.indexOf("=") === -1
+ ) {
+ return;
+ }
+
+ const fixPositions = [];
+ parseSelector(rule.selector, result, rule, selectorTree => {
+ selectorTree.walkAttributes(attributeNode => {
+ if (
+ attributeNode.quoted &&
+ attributeNode.value.indexOf(erroneousQuote) !== -1
+ ) {
+ const needsEscape =
+ attributeNode.value.indexOf(correctQuote) !== -1;
+ if (avoidEscape && needsEscape) {
+ // don't consider this an error
+ return;
+ }
+
+ const openIndex =
+ // index of the start of our attribute node in our source
+ attributeNode.sourceIndex +
+ // length of our attribute
+ attributeNode.attribute.length +
+ // length of our operator , ie '='
+ attributeNode.operator.length +
+ // and the length of the quote
+ erroneousQuote.length;
+
+ // we currently don't fix escapes
+ if (context.fix && !needsEscape) {
+ const closeIndex =
+ // our initial index
+ openIndex +
+ // the length of our value
+ attributeNode.value.length -
+ // with the length of our quote subtracted
+ erroneousQuote.length;
+ fixPositions.push(openIndex, closeIndex);
+ } else {
+ report({
+ message: messages.expected(expectation),
+ node: rule,
+ index: openIndex,
+ result,
+ ruleName
+ });
+ }
+ }
+ });
+ });
+ fixPositions.forEach(fixIndex => {
+ rule.selector = replaceQuote(rule.selector, fixIndex, correctQuote);
+ });
+ }
+
+ function checkDeclOrAtRule(node, value, getIndex) {
+ const fixPositions = [];
+ // Get out quickly if there are no erroneous quotes
+ if (value.indexOf(erroneousQuote) === -1) {
+ return;
+ } else if (node.type === "atrule" && node.name === "charset") {
+ // allow @charset rules to have double quotes, in spite of the configuration
+ // TODO: @charset should always use double-quotes, see https://github.com/stylelint/stylelint/issues/2788
+ return;
+ }
+
+ valueParser(value).walk(valueNode => {
+ if (valueNode.type === "string" && valueNode.quote === erroneousQuote) {
+ const needsEscape = valueNode.value.indexOf(correctQuote) !== -1;
+ if (avoidEscape && needsEscape) {
+ // don't consider this an error
+ return;
+ }
+ const openIndex = valueNode.sourceIndex;
+
+ // we currently don't fix escapes
+ if (context.fix && !needsEscape) {
+ const closeIndex =
+ openIndex + valueNode.value.length + erroneousQuote.length;
+ fixPositions.push(openIndex, closeIndex);
+ } else {
+ report({
+ message: messages.expected(expectation),
+ node,
+ index: getIndex(node) + openIndex,
+ result,
+ ruleName
+ });
+ }
+ }
+ });
+
+ fixPositions.forEach(fixIndex => {
+ if (node.type === "atrule") {
+ node.params = replaceQuote(node.params, fixIndex, correctQuote);
+ } else {
+ node.value = replaceQuote(node.value, fixIndex, correctQuote);
+ }
+ });
+ }
+ };
+};
+
+function replaceQuote(string, index, replace) {
+ return (
+ string.substring(0, index) +
+ replace +
+ string.substring(index + replace.length)
+ );
+}
+rule.ruleName = ruleName;
+rule.messages = messages;
+module.exports = rule;