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21 ** GNU General Public License Usage
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40 ****************************************************************************/
45 #include "qlocale_p.h"
48 #include "unicode/uloc.h"
49 #include "unicode/ustring.h"
53 typedef int32_t (*Ptr_u_strToCase)(UChar *dest, int32_t destCapacity, const UChar *src, int32_t srcLength, const char *locale, UErrorCode *pErrorCode);
55 // caseFunc can either be u_strToUpper or u_strToLower
56 static bool qt_u_strToCase(const QString &str, QString *out, const char *localeID, Ptr_u_strToCase caseFunc)
60 int32_t size = str.size();
61 size += size >> 2; // add 25% for possible expansions
62 QString result(size, Qt::Uninitialized);
64 UErrorCode status = U_ZERO_ERROR;
66 size = caseFunc(reinterpret_cast<UChar *>(result.data()), result.size(),
67 reinterpret_cast<const UChar *>(str.constData()), str.size(),
70 if (U_FAILURE(status) && status != U_BUFFER_OVERFLOW_ERROR)
73 if (size < result.size()) {
75 } else if (size > result.size()) {
76 // the resulting string is larger than our source string
79 status = U_ZERO_ERROR;
80 size = caseFunc(reinterpret_cast<UChar *>(result.data()), result.size(),
81 reinterpret_cast<const UChar *>(str.constData()), str.size(),
84 if (U_FAILURE(status))
87 // if the sizes don't match now, we give up.
88 if (size != result.size())
96 QString QIcu::toUpper(const QByteArray &localeID, const QString &str, bool *ok)
99 bool err = qt_u_strToCase(str, &out, localeID, u_strToUpper);
105 QString QIcu::toLower(const QByteArray &localeID, const QString &str, bool *ok)
108 bool err = qt_u_strToCase(str, &out, localeID, u_strToLower);