LCOV - code coverage report
Current view: top level - http_parser-3.1.1/lib/src - scan.dart (source / functions) Hit Total Coverage
Test: coverage.lcov Lines: 0 14 0.0 %
Date: 2017-10-10 20:17:03 Functions: 0 0 -

          Line data    Source code
       1             : // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
       2             : // for details. All rights reserved. Use of this source code is governed by a
       3             : // BSD-style license that can be found in the LICENSE file.
       4             : 
       5             : /// A library for broadly-useful functions and regular expressions for scanning
       6             : /// HTTP entities.
       7             : ///
       8             : /// Many of the regular expressions come from [section 2.2 of the HTTP
       9             : /// spec][spec].
      10             : ///
      11             : /// [spec]: http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html
      12             : import 'package:string_scanner/string_scanner.dart';
      13             : 
      14             : /// An HTTP token.
      15             : final token = new RegExp(r'[^()<>@,;:"\\/[\]?={} \t\x00-\x1F\x7F]+');
      16             : 
      17             : /// Linear whitespace.
      18             : final _lws = new RegExp(r"(?:\r\n)?[ \t]+");
      19             : 
      20             : /// A quoted string.
      21             : final _quotedString = new RegExp(r'"(?:[^"\x00-\x1F\x7F]|\\.)*"');
      22             : 
      23             : /// A quoted pair.
      24             : final _quotedPair = new RegExp(r'\\(.)');
      25             : 
      26             : /// A character that is *not* a valid HTTP token.
      27             : final nonToken = new RegExp(r'[()<>@,;:"\\/\[\]?={} \t\x00-\x1F\x7F]');
      28             : 
      29             : /// A regular expression matching any number of [_lws] productions in a row.
      30             : final whitespace = new RegExp("(?:${_lws.pattern})*");
      31             : 
      32             : /// Parses a list of elements, as in `1#element` in the HTTP spec.
      33             : ///
      34             : /// [scanner] is used to parse the elements, and [parseElement] is used to parse
      35             : /// each one individually. The values returned by [parseElement] are collected
      36             : /// in a list and returned.
      37             : ///
      38             : /// Once this is finished, [scanner] will be at the next non-LWS character in
      39             : /// the string, or the end of the string.
      40             : List/*<T>*/ parseList/*<T>*/(StringScanner scanner, /*=T*/ parseElement()) {
      41           0 :   var result = /*<T>*/[];
      42             : 
      43             :   // Consume initial empty values.
      44           0 :   while (scanner.scan(",")) {
      45           0 :     scanner.scan(whitespace);
      46             :   }
      47             : 
      48           0 :   result.add(parseElement());
      49           0 :   scanner.scan(whitespace);
      50             : 
      51           0 :   while (scanner.scan(",")) {
      52           0 :     scanner.scan(whitespace);
      53             : 
      54             :     // Empty elements are allowed, but excluded from the results.
      55           0 :     if (scanner.matches(",") || scanner.isDone) continue;
      56             : 
      57           0 :     result.add(parseElement());
      58           0 :     scanner.scan(whitespace);
      59             :   }
      60             : 
      61             :   return result;
      62             : }
      63             : 
      64             : /// Parses a single quoted string, and returns its contents.
      65             : ///
      66             : /// If [name] is passed, it's used to describe the expected value if it's not
      67             : /// found.
      68             : String expectQuotedString(StringScanner scanner, {String name}) {
      69             :   if (name == null) name = "quoted string";
      70           0 :   scanner.expect(_quotedString, name: name);
      71           0 :   var string = scanner.lastMatch[0];
      72             :   return string
      73           0 :       .substring(1, string.length - 1)
      74           0 :       .replaceAllMapped(_quotedPair, (match) => match[1]);
      75             : }

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