icuSources/test/letest/letsutil.cpp

   1 /*
   2  *******************************************************************************
   3  *
   4  *   Copyright (C) 1999-2006, International Business Machines
   5  *   Corporation and others.  All Rights Reserved.
   6  *
   7  *******************************************************************************
   8  *   file name:  letsutil.cpp
   9  *
  10  *   created on: 04/25/2006
  11  *   created by: Eric R. Mader
  12  */
  13
  14 #include "unicode/utypes.h"
  15 #include "unicode/unistr.h"
  16 #include "unicode/ubidi.h"
  17
  18 #include "layout/LETypes.h"
  19 #include "layout/LEScripts.h"
  20 #include "layout/LayoutEngine.h"
  21 #include "layout/LELanguages.h"
  22
  23 #include "OpenTypeLayoutEngine.h"
  24
  25 #include "letest.h"
  26 #include "letsutil.h"
  27
  28 U_NAMESPACE_USE
  29
  30 char *getCString(const UnicodeString *uString)
  31 {
  32     if (uString == NULL) {
  33         return NULL;
  34     }
  35
  36     le_int32 uLength = uString->length();
  37     le_int32 cLength = uString->extract(0, uLength, NULL, 0, US_INV);
  38     char *cString = NEW_ARRAY(char, cLength + 1);
  39
  40     uString->extract(0, uLength, cString, cLength, US_INV);
  41     cString[cLength] = '\0';
  42
  43     return cString;
  44 }
  45
  46 char *getUTF8String(const UnicodeString *uString)
  47 {
  48     if (uString == NULL) {
  49         return NULL;
  50     }
  51
  52     le_int32 uLength = uString->length();
  53     le_int32 cLength = uString->extract(0, uLength, NULL, 0, "UTF-8");
  54     char *cString = NEW_ARRAY(char, cLength + 1);
  55
  56     uString->extract(0, uLength, cString, cLength, "UTF-8");
  57
  58     cString[cLength] = '\0';
  59
  60     return cString;
  61 }
  62
  63 void freeCString(char *cString)
  64 {
  65     DELETE_ARRAY(cString);
  66 }
  67
  68 le_bool getRTL(const UnicodeString &text)
  69 {
  70     UBiDiLevel paraLevel;
  71     UErrorCode status = U_ZERO_ERROR;
  72     le_int32 charCount = text.length();
  73     UBiDi *ubidi = ubidi_openSized(charCount, 0, &status);
  74
  75     ubidi_setPara(ubidi, text.getBuffer(), charCount, UBIDI_DEFAULT_LTR, NULL, &status);
  76     paraLevel = ubidi_getParaLevel(ubidi);
  77     ubidi_close(ubidi);
  78
  79     return paraLevel & 1;
  80 }
  81
  82 le_int32 getLanguageCode(const char *lang)
  83 {
  84     if (strlen(lang) != 3) {
  85         return -1;
  86     }
  87
  88     LETag langTag = (LETag) ((lang[0] << 24) + (lang[1] << 16) + (lang[2] << 8) + 0x20);
  89
  90     for (le_int32 i = 0; i < languageCodeCount; i += 1) {
  91         if (langTag == OpenTypeLayoutEngine::languageTags[i]) {
  92             return i;
  93         }
  94     }
  95
  96     return -1;
  97 }
  98