LCOV - code coverage report
Current view: top level - http_parser-4.0.0/lib/src - scan.dart (source / functions) Hit Total Coverage
Test: lcov.info Lines: 4 22 18.2 %
Date: 2021-11-28 14:37:50 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             : import 'package:string_scanner/string_scanner.dart';
       6             : 
       7             : /// An HTTP token.
       8          15 : final token = RegExp(r'[^()<>@,;:"\\/[\]?={} \t\x00-\x1F\x7F]+');
       9             : 
      10             : /// Linear whitespace.
      11          15 : final _lws = RegExp(r'(?:\r\n)?[ \t]+');
      12             : 
      13             : /// A quoted string.
      14           0 : final _quotedString = RegExp(r'"(?:[^"\x00-\x1F\x7F]|\\.)*"');
      15             : 
      16             : /// A quoted pair.
      17           0 : final _quotedPair = RegExp(r'\\(.)');
      18             : 
      19             : /// A character that is *not* a valid HTTP token.
      20           3 : final nonToken = RegExp(r'[()<>@,;:"\\/\[\]?={} \t\x00-\x1F\x7F]');
      21             : 
      22             : /// A regular expression matching any number of [_lws] productions in a row.
      23          30 : final whitespace = RegExp('(?:${_lws.pattern})*');
      24             : 
      25             : /// Parses a list of elements, as in `1#element` in the HTTP spec.
      26             : ///
      27             : /// [scanner] is used to parse the elements, and [parseElement] is used to parse
      28             : /// each one individually. The values returned by [parseElement] are collected
      29             : /// in a list and returned.
      30             : ///
      31             : /// Once this is finished, [scanner] will be at the next non-LWS character in
      32             : /// the string, or the end of the string.
      33           0 : List<T> parseList<T>(StringScanner scanner, T Function() parseElement) {
      34           0 :   final result = <T>[];
      35             : 
      36             :   // Consume initial empty values.
      37           0 :   while (scanner.scan(',')) {
      38           0 :     scanner.scan(whitespace);
      39             :   }
      40             : 
      41           0 :   result.add(parseElement());
      42           0 :   scanner.scan(whitespace);
      43             : 
      44           0 :   while (scanner.scan(',')) {
      45           0 :     scanner.scan(whitespace);
      46             : 
      47             :     // Empty elements are allowed, but excluded from the results.
      48           0 :     if (scanner.matches(',') || scanner.isDone) continue;
      49             : 
      50           0 :     result.add(parseElement());
      51           0 :     scanner.scan(whitespace);
      52             :   }
      53             : 
      54             :   return result;
      55             : }
      56             : 
      57             : /// Parses a single quoted string, and returns its contents.
      58             : ///
      59             : /// If [name] is passed, it's used to describe the expected value if it's not
      60             : /// found.
      61           0 : String expectQuotedString(
      62             :   StringScanner scanner, {
      63             :   String name = 'quoted string',
      64             : }) {
      65           0 :   scanner.expect(_quotedString, name: name);
      66           0 :   final string = scanner.lastMatch![0]!;
      67             :   return string
      68           0 :       .substring(1, string.length - 1)
      69           0 :       .replaceAllMapped(_quotedPair, (match) => match[1]!);
      70             : }

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