1/*
2 * Copyright (C) 2012 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
19 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
20 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
23 * DAMAGE.
24 */
25
26#ifndef DateTimeFormat_h
27#define DateTimeFormat_h
28
29#if ENABLE(DATE_AND_TIME_INPUT_TYPES)
30#include <wtf/Forward.h>
31
32namespace WebCore {
33
34// DateTimeFormat parses date time format defined in Unicode Technical
35// standard 35, Locale Data Markup Language (LDML)[1].
36// [1] LDML http://unicode.org/reports/tr35/tr35-6.html#Date_Format_Patterns
37class DateTimeFormat {
38public:
39 enum FieldType {
40 FieldTypeInvalid,
41 FieldTypeLiteral,
42
43 // Era: AD
44 FieldTypeEra = 'G',
45
46 // Year: 1996
47 FieldTypeYear = 'y',
48 FieldTypeYearOfWeekOfYear = 'Y',
49 FieldTypeExtendedYear = 'u',
50
51 // Quater: Q2
52 FieldTypeQuater = 'Q',
53 FieldTypeQuaterStandAlone = 'q',
54
55 // Month: September
56 FieldTypeMonth = 'M',
57 FieldTypeMonthStandAlone = 'L',
58
59 // Week: 42
60 FieldTypeWeekOfYear = 'w',
61 FieldTypeWeekOfMonth = 'W',
62
63 // Day: 12
64 FieldTypeDayOfMonth = 'd',
65 FieldTypeDayOfYear = 'D',
66 FieldTypeDayOfWeekInMonth = 'F',
67 FieldTypeModifiedJulianDay = 'g',
68
69 // Week Day: Tuesday
70 FieldTypeDayOfWeek = 'E',
71 FieldTypeLocalDayOfWeek = 'e',
72 FieldTypeLocalDayOfWeekStandAlon = 'c',
73
74 // Period: AM or PM
75 FieldTypePeriod = 'a',
76
77 // Hour: 7
78 FieldTypeHour12 = 'h',
79 FieldTypeHour23 = 'H',
80 FieldTypeHour11 = 'K',
81 FieldTypeHour24 = 'k',
82
83 // Minute: 59
84 FieldTypeMinute = 'm',
85
86 // Second: 12
87 FieldTypeSecond = 's',
88 FieldTypeFractionalSecond = 'S',
89 FieldTypeMillisecondsInDay = 'A',
90
91 // Zone: PDT
92 FieldTypeZone = 'z',
93 FieldTypeRFC822Zone = 'Z',
94 FieldTypeNonLocationZone = 'v',
95 };
96
97 class TokenHandler {
98 public:
99 virtual ~TokenHandler() = default;
100 virtual void visitField(FieldType, int numberOfPatternCharacters) = 0;
101 virtual void visitLiteral(const String&) = 0;
102 };
103
104 // Returns true if succeeded, false if failed.
105 static bool parse(const String&, TokenHandler&);
106 static void quoteAndAppendLiteral(const String&, StringBuilder&);
107};
108
109} // namespace WebCore
110
111#endif
112#endif // DateTimeFormat_h
113