icuSources/common/ulistformatter.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) 2015, 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/ulistformatter.h"
  15 #include "unicode/listformatter.h"
  16 #include "unicode/localpointer.h"
  17 #include "cmemory.h"
  18
  19 U_NAMESPACE_USE
  20
  21 U_CAPI UListFormatter* U_EXPORT2
  22 ulistfmt_open(const char*  locale,
  23               UErrorCode*  status)
  24 {
  25     if (U_FAILURE(*status)) {
  26         return NULL;
  27     }
  28     LocalPointer<ListFormatter> listfmt(ListFormatter::createInstance(Locale(locale), *status));
  29     if (U_FAILURE(*status)) {
  30         return NULL;
  31     }
  32     return (UListFormatter*)listfmt.orphan();
  33 }
  34
  35
  36 U_CAPI void U_EXPORT2
  37 ulistfmt_close(UListFormatter *listfmt)
  38 {
  39     delete (ListFormatter*)listfmt;
  40 }
  41
  42
  43 U_CAPI int32_t U_EXPORT2
  44 ulistfmt_format(const UListFormatter* listfmt,
  45                 const UChar* const strings[],
  46                 const int32_t *    stringLengths,
  47                 int32_t            stringCount,
  48                 UChar*             result,
  49                 int32_t            resultCapacity,
  50                 UErrorCode*        status)
  51 {
  52     if (U_FAILURE(*status)) {
  53         return -1;
  54     }
  55     if (stringCount < 0 || (strings == NULL && stringCount > 0) || ((result == NULL)? resultCapacity != 0 : resultCapacity < 0)) {
  56         *status = U_ILLEGAL_ARGUMENT_ERROR;
  57         return -1;
  58     }
  59     UnicodeString ustringsStackBuf[4];
  60     UnicodeString* ustrings = ustringsStackBuf;
  61     if (stringCount > UPRV_LENGTHOF(ustringsStackBuf)) {
  62         ustrings = new UnicodeString[stringCount];
  63         if (ustrings == NULL) {
  64             *status = U_MEMORY_ALLOCATION_ERROR;
  65             return -1;
  66         }
  67     }
  68     if (stringLengths == NULL) {
  69         for (int32_t stringIndex = 0; stringIndex < stringCount; stringIndex++) {
  70             ustrings[stringIndex].setTo(TRUE, strings[stringIndex], -1);
  71         }
  72     } else {
  73         for (int32_t stringIndex = 0; stringIndex < stringCount; stringIndex++) {
  74             ustrings[stringIndex].setTo(stringLengths[stringIndex] < 0, strings[stringIndex], stringLengths[stringIndex]);
  75         }
  76     }
  77     UnicodeString res;
  78     if (result != NULL) {
  79         // NULL destination for pure preflighting: empty dummy string
  80         // otherwise, alias the destination buffer (copied from udat_format)
  81         res.setTo(result, 0, resultCapacity);
  82     }
  83     ((const ListFormatter*)listfmt)->format( ustrings, stringCount, res, *status );
  84     if (ustrings != ustringsStackBuf) {
  85         delete[] ustrings;
  86     }
  87     return res.extract(result, resultCapacity, *status);
  88 }
  89
  90
  91 #endif /* #if !UCONFIG_NO_FORMATTING */