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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
*******************************************************************************
*
* Copyright (C) 1999-2014, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: letsutil.cpp
*
* created on: 04/25/2006
* created by: Eric R. Mader
*/
#include "unicode/utypes.h"
#include "unicode/unistr.h"
#include "unicode/ubidi.h"
#include "layout/LETypes.h"
#include "layout/LEScripts.h"
#include "layout/LayoutEngine.h"
#include "layout/LELanguages.h"
#ifndef USING_ICULEHB
#include "OpenTypeLayoutEngine.h"
#endif
#include "letest.h"
#include "letsutil.h"
U_NAMESPACE_USE
char *getCString(const UnicodeString *uString)
{
if (uString == nullptr) {
return nullptr;
}
le_int32 uLength = uString->length();
le_int32 cLength = uString->extract(0, uLength, nullptr, 0, US_INV);
char *cString = NEW_ARRAY(char, cLength + 1);
uString->extract(0, uLength, cString, cLength, US_INV);
cString[cLength] = '\0';
return cString;
}
char *getCString(const LEUnicode16 *uChars)
{
if (uChars == nullptr) {
return nullptr;
}
const UnicodeString ustring(uChars);
return getCString(&ustring);
}
char *getUTF8String(const UnicodeString *uString)
{
if (uString == nullptr) {
return nullptr;
}
le_int32 uLength = uString->length();
le_int32 cLength = uString->extract(0, uLength, nullptr, 0, "UTF-8");
char *cString = NEW_ARRAY(char, cLength + 1);
uString->extract(0, uLength, cString, cLength, "UTF-8");
cString[cLength] = '\0';
return cString;
}
void freeCString(char *cString)
{
DELETE_ARRAY(cString);
}
le_bool getRTL(const UnicodeString &text)
{
UBiDiLevel level = 0;
UErrorCode status = U_ZERO_ERROR;
le_int32 charCount = text.length();
le_int32 limit = -1;
UBiDi *ubidi = ubidi_openSized(charCount, 0, &status);
ubidi_setPara(ubidi, text.getBuffer(), charCount, UBIDI_DEFAULT_LTR, nullptr, &status);
// TODO: Should check that there's only a single logical run...
ubidi_getLogicalRun(ubidi, 0, &limit, &level);
ubidi_close(ubidi);
return level & 1;
}
le_int32 getLanguageCode(const char *lang)
{
if (strlen(lang) != 3) {
return -1;
}
#ifndef USING_ICULEHB
LETag langTag = (LETag) ((lang[0] << 24) + (lang[1] << 16) + (lang[2] << 8) + 0x20);
for (le_int32 i = 0; i < languageCodeCount; i += 1) {
if (langTag == OpenTypeLayoutEngine::languageTags[i]) {
return i;
}
}
#else
if (!strcmp(lang, "JAN")) return janLanguageCode;
if (!strcmp(lang, "KOR")) return korLanguageCode;
if (!strcmp(lang, "ZHT")) return zhtLanguageCode;
if (!strcmp(lang, "ZHS")) return zhsLanguageCode;
if (!strcmp(lang, "HIN")) return hinLanguageCode;
if (!strcmp(lang, "MAR")) return marLanguageCode;
if (!strcmp(lang, "ROM")) return romLanguageCode;
#endif
return -1;
}
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