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