Check in the pristine copy of ICU 4.6...

icu46/source/test/letest/letsutil.cpp

+/*
+ *******************************************************************************
+ *
+ *   Copyright (C) 1999-2008, 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"
+
+#include "OpenTypeLayoutEngine.h"
+
+#include "letest.h"
+#include "letsutil.h"
+
+U_NAMESPACE_USE
+
+char *getCString(const UnicodeString *uString)
+{
+    if (uString == NULL) {
+        return NULL;
+    }
+
+    le_int32 uLength = uString->length();
+    le_int32 cLength = uString->extract(0, uLength, NULL, 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 == NULL) {
+        return NULL;
+    }
+
+    const UnicodeString ustring(uChars);
+
+    return getCString(&ustring);
+}
+
+char *getUTF8String(const UnicodeString *uString)
+{
+    if (uString == NULL) {
+        return NULL;
+    }
+
+    le_int32 uLength = uString->length();
+    le_int32 cLength = uString->extract(0, uLength, NULL, 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, NULL, &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;
+    }
+
+    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;
+        }
+    }
+
+    return -1;
+}
+