icuSources/common/ulistformatter.cpp

   1 /*
   2 *****************************************************************************************
   3 * Copyright (C) 2015, 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/ulistformatter.h"
  13 #include "unicode/listformatter.h"
  14 #include "unicode/localpointer.h"
  15 #include "cmemory.h"
  16
  17 U_NAMESPACE_USE
  18
  19 U_CAPI UListFormatter* U_EXPORT2
  20 ulistfmt_open(const char*  locale,
  21               UErrorCode*  status)
  22 {
  23     if (U_FAILURE(*status)) {
  24         return NULL;
  25     }
  26     LocalPointer<ListFormatter> listfmt(ListFormatter::createInstance(Locale(locale), *status));
  27     if (U_FAILURE(*status)) {
  28         return NULL;
  29     }
  30     return (UListFormatter*)listfmt.orphan();
  31 }
  32
  33
  34 U_CAPI void U_EXPORT2
  35 ulistfmt_close(UListFormatter *listfmt)
  36 {
  37     delete (ListFormatter*)listfmt;
  38 }
  39
  40
  41 U_CAPI int32_t U_EXPORT2
  42 ulistfmt_format(const UListFormatter* listfmt,
  43                 const UChar* const strings[],
  44                 const int32_t *    stringLengths,
  45                 int32_t            stringCount,
  46                 UChar*             result,
  47                 int32_t            resultCapacity,
  48                 UErrorCode*        status)
  49 {
  50     if (U_FAILURE(*status)) {
  51         return -1;
  52     }
  53     if (stringCount < 0 || (strings == NULL && stringCount > 0) || ((result == NULL)? resultCapacity != 0 : resultCapacity < 0)) {
  54         *status = U_ILLEGAL_ARGUMENT_ERROR;
  55         return -1;
  56     }
  57     UnicodeString ustringsStackBuf[4];
  58     UnicodeString* ustrings = ustringsStackBuf;
  59     if (stringCount > UPRV_LENGTHOF(ustringsStackBuf)) {
  60         ustrings = new UnicodeString[stringCount];
  61         if (ustrings == NULL) {
  62             *status = U_MEMORY_ALLOCATION_ERROR;
  63             return -1;
  64         }
  65     }
  66     if (stringLengths == NULL) {
  67         for (int32_t stringIndex = 0; stringIndex < stringCount; stringIndex++) {
  68             ustrings[stringIndex].setTo(TRUE, strings[stringIndex], -1);
  69         }
  70     } else {
  71         for (int32_t stringIndex = 0; stringIndex < stringCount; stringIndex++) {
  72             ustrings[stringIndex].setTo(stringLengths[stringIndex] < 0, strings[stringIndex], stringLengths[stringIndex]);
  73         }
  74     }
  75     UnicodeString res;
  76     if (result != NULL) {
  77         // NULL destination for pure preflighting: empty dummy string
  78         // otherwise, alias the destination buffer (copied from udat_format)
  79         res.setTo(result, 0, resultCapacity);
  80     }
  81     ((const ListFormatter*)listfmt)->format( ustrings, stringCount, res, *status );
  82     if (ustrings != ustringsStackBuf) {
  83         delete[] ustrings;
  84     }
  85     return res.extract(result, resultCapacity, *status);
  86 }
  87
  88
  89 #endif /* #if !UCONFIG_NO_FORMATTING */