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66 lines
1.7 KiB
66 lines
1.7 KiB
4 years ago
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"use strict";
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var regexpu = require("regexpu-core");
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var identifierEscapeRegexp = new RegExp(
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regexpu("(^[^A-Za-z_\\-\\u{00a0}-\\u{10ffff}]|^--|[^A-Za-z_0-9\\-\\u{00a0}-\\u{10ffff}])", "ug"),
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"g"
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);
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function escape(str, identifier) {
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if(str === "*") {
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return "*";
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}
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if (identifier) {
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return str.replace(identifierEscapeRegexp, "\\$1");
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} else {
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return str.replace(/(^[^A-Za-z_\\-]|^--|[^A-Za-z_0-9\\-])/g, "\\$1");
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}
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}
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function stringifyWithoutBeforeAfter(tree) {
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switch(tree.type) {
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case "selectors":
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return tree.nodes.map(stringify).join(",");
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case "selector":
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return tree.nodes.map(stringify).join("");
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case "element":
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return (typeof tree.namespace === "string" ? escape(tree.namespace) + "|" : "") + escape(tree.name);
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case "class":
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return "." + escape(tree.name, true);
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case "id":
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return "#" + escape(tree.name, true);
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case "attribute":
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return "[" + tree.content + "]";
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case "spacing":
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return tree.value;
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case "pseudo-class":
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return ":" + escape(tree.name) + (typeof tree.content === "string" ? "(" + tree.content + ")" : "");
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case "nested-pseudo-class":
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return ":" + escape(tree.name) + "(" + tree.nodes.map(stringify).join(",") + ")";
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case "pseudo-element":
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return "::" + escape(tree.name);
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case "universal":
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return (typeof tree.namespace === "string" ? escape(tree.namespace) + "|" : "") + "*";
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case "operator":
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return tree.operator;
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case "comment":
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return "/*" + tree.content + "*/";
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case "invalid":
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return tree.value;
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}
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}
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function stringify(tree) {
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var str = stringifyWithoutBeforeAfter(tree);
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if(tree.before) {
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str = tree.before + str;
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}
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if(tree.after) {
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str = str + tree.after;
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}
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return str;
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}
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module.exports = stringify;
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