Version 1

[yaffs-website] / node_modules / uncss / node_modules / postcss / lib / previous-map.js

diff --git a/node_modules/uncss/node_modules/postcss/lib/previous-map.js b/node_modules/uncss/node_modules/postcss/lib/previous-map.js
new file mode 100644 (file)
index 0000000..7cbe0bc
--- /dev/null
+++ b/node_modules/uncss/node_modules/postcss/lib/previous-map.js
@@ -0,0 +1,117 @@
+'use strict';
+
+exports.__esModule = true;
+
+var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; };
+
+var _jsBase = require('js-base64');
+
+var _sourceMap = require('source-map');
+
+var _sourceMap2 = _interopRequireDefault(_sourceMap);
+
+var _path = require('path');
+
+var _path2 = _interopRequireDefault(_path);
+
+var _fs = require('fs');
+
+var _fs2 = _interopRequireDefault(_fs);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+var PreviousMap = function () {
+    function PreviousMap(css, opts) {
+        _classCallCheck(this, PreviousMap);
+
+        this.loadAnnotation(css);
+        this.inline = this.startWith(this.annotation, 'data:');
+
+        var prev = opts.map ? opts.map.prev : undefined;
+        var text = this.loadMap(opts.from, prev);
+        if (text) this.text = text;
+    }
+
+    PreviousMap.prototype.consumer = function consumer() {
+        if (!this.consumerCache) {
+            this.consumerCache = new _sourceMap2.default.SourceMapConsumer(this.text);
+        }
+        return this.consumerCache;
+    };
+
+    PreviousMap.prototype.withContent = function withContent() {
+        return !!(this.consumer().sourcesContent && this.consumer().sourcesContent.length > 0);
+    };
+
+    PreviousMap.prototype.startWith = function startWith(string, start) {
+        if (!string) return false;
+        return string.substr(0, start.length) === start;
+    };
+
+    PreviousMap.prototype.loadAnnotation = function loadAnnotation(css) {
+        var match = css.match(/\/\*\s*# sourceMappingURL=(.*)\s*\*\//);
+        if (match) this.annotation = match[1].trim();
+    };
+
+    PreviousMap.prototype.decodeInline = function decodeInline(text) {
+        var utfd64 = 'data:application/json;charset=utf-8;base64,';
+        var utf64 = 'data:application/json;charset=utf8;base64,';
+        var b64 = 'data:application/json;base64,';
+        var uri = 'data:application/json,';
+
+        if (this.startWith(text, uri)) {
+            return decodeURIComponent(text.substr(uri.length));
+        } else if (this.startWith(text, b64)) {
+            return _jsBase.Base64.decode(text.substr(b64.length));
+        } else if (this.startWith(text, utf64)) {
+            return _jsBase.Base64.decode(text.substr(utf64.length));
+        } else if (this.startWith(text, utfd64)) {
+            return _jsBase.Base64.decode(text.substr(utfd64.length));
+        } else {
+            var encoding = text.match(/data:application\/json;([^,]+),/)[1];
+            throw new Error('Unsupported source map encoding ' + encoding);
+        }
+    };
+
+    PreviousMap.prototype.loadMap = function loadMap(file, prev) {
+        if (prev === false) return false;
+
+        if (prev) {
+            if (typeof prev === 'string') {
+                return prev;
+            } else if (prev instanceof _sourceMap2.default.SourceMapConsumer) {
+                return _sourceMap2.default.SourceMapGenerator.fromSourceMap(prev).toString();
+            } else if (prev instanceof _sourceMap2.default.SourceMapGenerator) {
+                return prev.toString();
+            } else if (this.isMap(prev)) {
+                return JSON.stringify(prev);
+            } else {
+                throw new Error('Unsupported previous source map format: ' + prev.toString());
+            }
+        } else if (this.inline) {
+            return this.decodeInline(this.annotation);
+        } else if (this.annotation) {
+            var map = this.annotation;
+            if (file) map = _path2.default.join(_path2.default.dirname(file), map);
+
+            this.root = _path2.default.dirname(map);
+            if (_fs2.default.existsSync && _fs2.default.existsSync(map)) {
+                return _fs2.default.readFileSync(map, 'utf-8').toString().trim();
+            } else {
+                return false;
+            }
+        }
+    };
+
+    PreviousMap.prototype.isMap = function isMap(map) {
+        if ((typeof map === 'undefined' ? 'undefined' : _typeof(map)) !== 'object') return false;
+        return typeof map.mappings === 'string' || typeof map._mappings === 'string';
+    };
+
+    return PreviousMap;
+}();
+
+exports.default = PreviousMap;
+module.exports = exports['default'];
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