xref: /aosp_15_r20/external/icu/icu4c/source/samples/translit/answers/main_3.cpp (revision 0e209d3975ff4a8c132096b14b0e9364a753506e)
1 /***********************************************************************
2  * © 2016 and later: Unicode, Inc. and others.
3  * License & terms of use: http://www.unicode.org/copyright.html
4  ***********************************************************************
5  ***********************************************************************
6  * COPYRIGHT:
7  * Copyright (c) 1999-2002, International Business Machines Corporation and
8  * others. All Rights Reserved.
9  ***********************************************************************/
10 
11 #include "unicode/translit.h"
12 #include "rbt.h"
13 #include "unicode/unistr.h"
14 #include "unicode/calendar.h"
15 #include "unicode/datefmt.h"
16 #include <stdio.h>
17 #include <stdlib.h>
18 #include "util.h"
19 #include "unaccent.h"
20 
21 using icu::Transliterator;
22 
23 // RuleBasedTransliterator rules to remove accents from characters
24 // so they can be displayed as ASCIIx
25 UnicodeString UNACCENT_RULES(
26     "[\\u00C0-\\u00C5] > A;"
27     "[\\u00C8-\\u00CB] > E;"
28     "[\\u00CC-\\u00CF] > I;"
29     "[\\u00E0-\\u00E5] > a;"
30     "[\\u00E8-\\u00EB] > e;"
31     "[\\u00EC-\\u00EF] > i;"
32     );
33 
main(int argc,char ** argv)34 int main(int argc, char **argv) {
35 
36     Calendar *cal;
37     DateFormat *fmt;
38     DateFormat *defFmt;
39     Transliterator *greek_latin;
40     Transliterator *rbtUnaccent;
41     UErrorCode status = U_ZERO_ERROR;
42     Locale greece("el", "GR");
43     UnicodeString str, str2;
44 
45     // Create a calendar in the Greek locale
46     cal = Calendar::createInstance(greece, status);
47     check(status, "Calendar::createInstance");
48 
49     // Create a formatter
50     fmt = DateFormat::createDateInstance(DateFormat::kFull, greece);
51     fmt->setCalendar(*cal);
52 
53     // Create a default formatter
54     defFmt = DateFormat::createDateInstance(DateFormat::kFull);
55     defFmt->setCalendar(*cal);
56 
57     // Create a Greek-Latin Transliterator
58     greek_latin = Transliterator::createInstance("Greek-Latin", UTRANS_FORWARD, status);
59     if (greek_latin == nullptr) {
60         printf("ERROR: Transliterator::createInstance() failed\n");
61         exit(1);
62     }
63 
64     // Create a custom Transliterator
65     UParseError parseError;
66     rbtUnaccent = new RuleBasedTransliterator("RBTUnaccent",
67                                               UNACCENT_RULES,
68                                               UTRANS_FORWARD,
69                                               nullptr,
70                                               parseError,
71                                               status);
72     check(status, "RuleBasedTransliterator::ct");
73 
74     // Loop over various months
75     for (int32_t month = Calendar::JANUARY;
76          month <= Calendar::DECEMBER;
77          ++month) {
78 
79         // Set the calendar to a date
80         cal->clear();
81         cal->set(1999, month, 4);
82 
83         // Format the date in default locale
84         str.remove();
85         defFmt->format(cal->getTime(status), str, status);
86         check(status, "DateFormat::format");
87         printf("Date: ");
88         uprintf(escape(str));
89         printf("\n");
90 
91         // Format the date for Greece
92         str.remove();
93         fmt->format(cal->getTime(status), str, status);
94         check(status, "DateFormat::format");
95         printf("Greek formatted date: ");
96         uprintf(escape(str));
97         printf("\n");
98 
99         // Transliterate result
100         greek_latin->transliterate(str);
101         printf("Transliterated via Greek-Latin: ");
102         uprintf(escape(str));
103         printf("\n");
104 
105         // Transliterate result
106         str2 = str;
107         rbtUnaccent->transliterate(str);
108         printf("Transliterated via RBT unaccent: ");
109         uprintf(escape(str));
110         printf("\n\n");
111     }
112 
113     // Clean up
114     delete fmt;
115     delete cal;
116     delete greek_latin;
117     delete rbtUnaccent;
118 
119     printf("Exiting successfully\n");
120     return 0;
121 }
122