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      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 #include "platform/PlatformExport.h"
     30 #include "wtf/Forward.h"
     31 
     32 namespace 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
     37 class PLATFORM_EXPORT DateTimeFormat {
     38 public:
     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() { }
    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 // DateTimeFormat_h
    112