icuSources/i18n/udateintervalformat.cpp

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