File indexing completed on 2024-04-14 14:18:30

 /*
     SPDX-FileCopyrightText: 2021 Friedrich W. H. Kossebau <kossebau@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "kusasciitextcodec.h"
 
 QByteArray KUsAsciiTextCodec::name() const
 {
     return QByteArrayLiteral("US-ASCII");
 }
 
 QList<QByteArray> KUsAsciiTextCodec::aliases() const
 {
     return {
         // aliases by https://www.iana.org/assignments/character-sets/character-sets.xml, update 2021-01-04
         QByteArrayLiteral("iso-ir-6"),
         QByteArrayLiteral("ANSI_X3.4-1968"),
         QByteArrayLiteral("ANSI_X3.4-1986"),
         QByteArrayLiteral("ISO_646.irv:1991"),
         QByteArrayLiteral("ISO646-US"),
         QByteArrayLiteral("us"),
         QByteArrayLiteral("IBM367"),
         QByteArrayLiteral("cp367"),
         QByteArrayLiteral("csASCII"),
         // further aliases as used by ICU 69.1
         QByteArrayLiteral("ibm-367"),
         QByteArrayLiteral("ASCII"),
         QByteArrayLiteral("ISO_646.irv:1991"),
         QByteArrayLiteral("iso_646.irv:1983"),
         QByteArrayLiteral("ascii7"),
         QByteArrayLiteral("646"),
         QByteArrayLiteral("windows-20127"),
     };
 }
 int KUsAsciiTextCodec::mibEnum() const
 {
     return 3;
 }
 
 QByteArray KUsAsciiTextCodec::convertFromUnicode(const QChar *input, int number, QTextCodec::ConverterState *state) const
 {
     const char invalidSubstituteChar = (state && state->flags & ConvertInvalidToNull) ? 0 : '?';
 
     QByteArray encoded(number, Qt::Uninitialized);
 
     char *d = encoded.data();
     int invalidChars = 0;
 
     for (int i = 0; i < number; ++i) {
         const ushort unicodeCodePoint = input[i].unicode();
         if (unicodeCodePoint > 0x7f) {
             d[i] = invalidSubstituteChar;
             ++invalidChars;
         } else {
             d[i] = static_cast<char>(unicodeCodePoint & 0xff);
         }
     }
 
     if (state) {
         state->invalidChars += invalidChars;
     }
 
     return encoded;
 }
 
 QString KUsAsciiTextCodec::convertToUnicode(const char *chars, int len, QTextCodec::ConverterState *state) const
 {
     const QChar invalidSubstituteChar = (state && state->flags & ConvertInvalidToNull) ? QChar(0) : QLatin1Char('?');
 
     QString decoded(len, invalidSubstituteChar);
 
     QChar *d = decoded.data();
     int invalidChars = 0;
 
     for (int i = 0; i < len; ++i) {
         const char c = chars[i];
         // signedness of char depends on the compiler and the target platform,
         // so for comparison use explicit variant
         if (static_cast<unsigned char>(c) > 0x7f) {
             ++invalidChars;
         } else {
             d[i] = QLatin1Char(c);
         }
     }
 
     if (state) {
         state->invalidChars += invalidChars;
     }
 
     return decoded;
 }