icuSources/test/letest/letsutil.cpp

   1 /*
   2  *******************************************************************************
   3  *
   4  *   Copyright (C) 1999-2014, 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 #ifndef USING_ICULEHB
  24 #include "OpenTypeLayoutEngine.h"
  25 #endif
  26
  27 #include "letest.h"
  28 #include "letsutil.h"
  29
  30 U_NAMESPACE_USE
  31
  32 char *getCString(const UnicodeString *uString)
  33 {
  34     if (uString == NULL) {
  35         return NULL;
  36     }
  37
  38     le_int32 uLength = uString->length();
  39     le_int32 cLength = uString->extract(0, uLength, NULL, 0, US_INV);
  40     char *cString = NEW_ARRAY(char, cLength + 1);
  41
  42     uString->extract(0, uLength, cString, cLength, US_INV);
  43     cString[cLength] = '\0';
  44
  45     return cString;
  46 }
  47
  48 char *getCString(const LEUnicode16 *uChars)
  49 {
  50     if (uChars == NULL) {
  51         return NULL;
  52     }
  53
  54     const UnicodeString ustring(uChars);
  55
  56     return getCString(&ustring);
  57 }
  58
  59 char *getUTF8String(const UnicodeString *uString)
  60 {
  61     if (uString == NULL) {
  62         return NULL;
  63     }
  64
  65     le_int32 uLength = uString->length();
  66     le_int32 cLength = uString->extract(0, uLength, NULL, 0, "UTF-8");
  67     char *cString = NEW_ARRAY(char, cLength + 1);
  68
  69     uString->extract(0, uLength, cString, cLength, "UTF-8");
  70
  71     cString[cLength] = '\0';
  72
  73     return cString;
  74 }
  75
  76 void freeCString(char *cString)
  77 {
  78     DELETE_ARRAY(cString);
  79 }
  80
  81 le_bool getRTL(const UnicodeString &text)
  82 {
  83     UBiDiLevel level = 0;
  84     UErrorCode status = U_ZERO_ERROR;
  85     le_int32 charCount = text.length();
  86     le_int32 limit = -1;
  87     UBiDi *ubidi = ubidi_openSized(charCount, 0, &status);
  88
  89     ubidi_setPara(ubidi, text.getBuffer(), charCount, UBIDI_DEFAULT_LTR, NULL, &status);
  90
  91     // TODO: Should check that there's only a single logical run...
  92     ubidi_getLogicalRun(ubidi, 0, &limit, &level);
  93
  94     ubidi_close(ubidi);
  95
  96     return level & 1;
  97 }
  98
  99 le_int32 getLanguageCode(const char *lang)
 100 {
 101     if (strlen(lang) != 3) {
 102         return -1;
 103     }
 104
 105     LETag langTag = (LETag) ((lang[0] << 24) + (lang[1] << 16) + (lang[2] << 8) + 0x20);
 106
 107 #ifndef USING_ICULEHB
 108     for (le_int32 i = 0; i < languageCodeCount; i += 1) {
 109         if (langTag == OpenTypeLayoutEngine::languageTags[i]) {
 110             return i;
 111         }
 112     }
 113 #endif
 114
 115     return -1;
 116 }
 117