icuSources/i18n/udateintervalformat.cpp

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4 *****************************************************************************************
   5 * Copyright (C) 2010-2011, International Business Machines
   6 * Corporation and others. All Rights Reserved.
   7 *****************************************************************************************
   8 */
   9
  10 #include "unicode/utypes.h"
  11
  12 #if !UCONFIG_NO_FORMATTING
  13
  14 #include "unicode/udateintervalformat.h"
  15 #include "unicode/dtitvfmt.h"
  16 #include "unicode/dtintrv.h"
  17 #include "unicode/localpointer.h"
  18 #include "unicode/timezone.h"
  19 #include "unicode/locid.h"
  20 #include "unicode/unistr.h"
  21
  22 U_NAMESPACE_USE
  23
  24
  25 U_CAPI UDateIntervalFormat* U_EXPORT2
  26 udtitvfmt_open(const char*  locale,
  27                const UChar* skeleton,
  28                int32_t      skeletonLength,
  29                const UChar* tzID,
  30                int32_t      tzIDLength,
  31                UErrorCode*  status)
  32 {
  33     if (U_FAILURE(*status)) {
  34         return NULL;
  35     }
  36     if ((skeleton == NULL ? skeletonLength != 0 : skeletonLength < -1) ||
  37         (tzID == NULL ? tzIDLength != 0 : tzIDLength < -1)
  38     ) {
  39         *status = U_ILLEGAL_ARGUMENT_ERROR;
  40         return NULL;
  41     }
  42     UnicodeString skel((UBool)(skeletonLength == -1), skeleton, skeletonLength);
  43     LocalPointer<DateIntervalFormat> formatter(
  44             DateIntervalFormat::createInstance(skel, Locale(locale), *status));
  45     if (U_FAILURE(*status)) {
  46         return NULL;
  47     }
  48     if(tzID != 0) {
  49         TimeZone *zone = TimeZone::createTimeZone(UnicodeString((UBool)(tzIDLength == -1), tzID, tzIDLength));
  50         if(zone == NULL) {
  51             *status = U_MEMORY_ALLOCATION_ERROR;
  52             return NULL;
  53         }
  54         formatter->adoptTimeZone(zone);
  55     }
  56     return (UDateIntervalFormat*)formatter.orphan();
  57 }
  58
  59
  60 U_CAPI void U_EXPORT2
  61 udtitvfmt_close(UDateIntervalFormat *formatter)
  62 {
  63     delete (DateIntervalFormat*)formatter;
  64 }
  65
  66
  67 U_CAPI int32_t U_EXPORT2
  68 udtitvfmt_format(const UDateIntervalFormat* formatter,
  69                  UDate           fromDate,
  70                  UDate           toDate,
  71                  UChar*          result,
  72                  int32_t         resultCapacity,
  73                  UFieldPosition* position,
  74                  UErrorCode*     status)
  75 {
  76     if (U_FAILURE(*status)) {
  77         return -1;
  78     }
  79     if (result == NULL ? resultCapacity != 0 : resultCapacity < 0) {
  80         *status = U_ILLEGAL_ARGUMENT_ERROR;
  81         return 0;
  82     }
  83     UnicodeString res;
  84     if (result != NULL) {
  85         // NULL destination for pure preflighting: empty dummy string
  86         // otherwise, alias the destination buffer (copied from udat_format)
  87         res.setTo(result, 0, resultCapacity);
  88     }
  89     FieldPosition fp;
  90     if (position != 0) {
  91         fp.setField(position->field);
  92     }
  93
  94     DateInterval interval = DateInterval(fromDate,toDate);
  95     ((const DateIntervalFormat*)formatter)->format( &interval, res, fp, *status );
  96     if (U_FAILURE(*status)) {
  97         return -1;
  98     }
  99     if (position != 0) {
 100         position->beginIndex = fp.getBeginIndex();
 101         position->endIndex = fp.getEndIndex();
 102     }
 103
 104     return res.extract(result, resultCapacity, *status);
 105 }
 106
 107 U_CAPI void U_EXPORT2
 108 udtitvfmt_setAttribute(UDateIntervalFormat*             formatter,
 109                       UDateIntervalFormatAttribute      attr,
 110                       UDateIntervalFormatAttributeValue value,
 111                       UErrorCode*                       status)
 112 {
 113     if (U_FAILURE(*status)) {
 114         return;
 115     }
 116     ((DateIntervalFormat*)formatter)->setAttribute( attr, value, *status );
 117 }
 118
 119 #endif /* #if !UCONFIG_NO_FORMATTING */