Files
RedBear-OS/local/recipes/kde/kf6-kcodecs/source/src/kcharsets.cpp
T
2026-04-14 10:51:06 +01:00

447 lines
12 KiB
C++

/*
This file is part of the KDE libraries
SPDX-FileCopyrightText: 1999 Lars Knoll <knoll@kde.org>
SPDX-FileCopyrightText: 2001, 2003, 2004, 2005, 2006 Nicolas GOUTTE <goutte@kde.org>
SPDX-FileCopyrightText: 2007 Nick Shaforostoff <shafff@ukr.net>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#include "kcharsets.h"
#include "kcharsets_p.h"
#include "kcodecs_debug.h"
#include <kentities.h>
#include <QHash>
#include <algorithm>
#include <assert.h>
/*
* The encoding names (like "ISO 8859-1") in this list are user-visible,
* and should be mostly uppercase.
* Generate with generate_string_table.pl (located in kde-dev-scripts),
* input data:
ISO 8859-1
i18n:Western European
ISO 8859-15
i18n:Western European
ISO 8859-14
i18n:Western European
cp 1252
i18n:Western European
IBM850
i18n:Western European
ISO 8859-2
i18n:Central European
ISO 8859-3
i18n:Central European
ISO 8859-4
i18n:Baltic
ISO 8859-13
i18n:Baltic
ISO 8859-16
i18n:South-Eastern Europe
cp 1250
i18n:Central European
cp 1254
i18n:Turkish
cp 1257
i18n:Baltic
KOI8-R
i18n:Cyrillic
ISO 8859-5
i18n:Cyrillic
cp 1251
i18n:Cyrillic
KOI8-U
i18n:Cyrillic
IBM866
i18n:Cyrillic
Big5
i18n:Chinese Traditional
Big5-HKSCS
i18n:Chinese Traditional
GB18030
i18n:Chinese Simplified
GBK
i18n:Chinese Simplified
GB2312
i18n:Chinese Simplified
EUC-KR
i18n:Korean
windows-949
i18n:Korean
sjis
i18n:Japanese
ISO-2022-JP
i18n:Japanese
EUC-JP
i18n:Japanese
ISO 8859-7
i18n:Greek
cp 1253
i18n:Greek
ISO 8859-6
i18n:Arabic
cp 1256
i18n:Arabic
ISO 8859-8
i18n:Hebrew
ISO 8859-8-I
i18n:Hebrew
cp 1255
i18n:Hebrew
ISO 8859-9
i18n:Turkish
TIS620
i18n:Thai
ISO 8859-11
i18n:Thai
UTF-8
i18n:Unicode
UTF-16
i18n:Unicode
utf7
i18n:Unicode
ucs2
i18n:Unicode
ISO 10646-UCS-2
i18n:Unicode
windows-1258
i18n:Other
IBM874
i18n:Other
TSCII
i18n:Other
*/
/*
* Notes about the table:
*
* - The following entries were disabled and removed from the table:
ibm852
i18n:Central European
pt 154
i18n:Cyrillic // ### TODO "PT 154" seems to have been removed from Qt
*
* - ISO 8559-11 is the deprecated name of TIS-620
* - utf7 is not in Qt
* - UTF-16 is duplicated as "ucs2" and "ISO 10646-UCS-2"
* - windows-1258: TODO
* - IBM874: TODO
* - TSCII: TODO
*/
/*
* This redefines the QT_TRANSLATE_NOOP3 macro provided by Qt to indicate that
* statically initialised text should be translated so that it expands to just
* the string that should be translated, making it possible to use it in the
* single string construct below.
*/
#undef QT_TRANSLATE_NOOP3
#define QT_TRANSLATE_NOOP3(a, b, c) b
/*
* THE FOLLOWING CODE IS GENERATED. PLEASE DO NOT EDIT BY HAND.
* The script used was generate_string_table.pl which can be found in kde-dev-scripts.
* It was then edited to use QT_TRANSLATE_NOOP3 instead of I18N_NOOP.
*/
static const char language_for_encoding_string[] =
"ISO 8859-1\0"
QT_TRANSLATE_NOOP3("KCharsets", "Western European", "@item Text character set")"\0"
"ISO 8859-15\0"
"ISO 8859-14\0"
"cp 1252\0"
"IBM850\0"
"ISO 8859-2\0"
QT_TRANSLATE_NOOP3("KCharsets", "Central European", "@item Text character set")"\0"
"ISO 8859-3\0"
"ISO 8859-4\0"
QT_TRANSLATE_NOOP3("KCharsets", "Baltic", "@item Text character set")"\0"
"ISO 8859-13\0"
"ISO 8859-16\0"
QT_TRANSLATE_NOOP3("KCharsets", "South-Eastern Europe", "@item Text character set")"\0"
"cp 1250\0"
"cp 1254\0"
QT_TRANSLATE_NOOP3("KCharsets", "Turkish", "@item Text character set")"\0"
"cp 1257\0"
"KOI8-R\0"
QT_TRANSLATE_NOOP3("KCharsets", "Cyrillic", "@item Text character set")"\0"
"ISO 8859-5\0"
"cp 1251\0"
"KOI8-U\0"
"IBM866\0"
"Big5\0"
QT_TRANSLATE_NOOP3("KCharsets", "Chinese Traditional", "@item Text character set")"\0"
"Big5-HKSCS\0"
"GB18030\0"
QT_TRANSLATE_NOOP3("KCharsets", "Chinese Simplified", "@item Text character set")"\0"
"GBK\0"
"GB2312\0"
"EUC-KR\0"
QT_TRANSLATE_NOOP3("KCharsets", "Korean", "@item Text character set")"\0"
"windows-949\0"
"sjis\0"
QT_TRANSLATE_NOOP3("KCharsets", "Japanese", "@item Text character set")"\0"
"ISO-2022-JP\0"
"EUC-JP\0"
"ISO 8859-7\0"
QT_TRANSLATE_NOOP3("KCharsets", "Greek", "@item Text character set")"\0"
"cp 1253\0"
"ISO 8859-6\0"
QT_TRANSLATE_NOOP3("KCharsets", "Arabic", "@item Text character set")"\0"
"cp 1256\0"
"ISO 8859-8\0"
QT_TRANSLATE_NOOP3("KCharsets", "Hebrew", "@item Text character set")"\0"
"ISO 8859-8-I\0"
"cp 1255\0"
"ISO 8859-9\0"
"TIS620\0"
QT_TRANSLATE_NOOP3("KCharsets", "Thai", "@item Text character set")"\0"
"ISO 8859-11\0"
"UTF-8\0"
QT_TRANSLATE_NOOP3("KCharsets", "Unicode", "@item Text character set")"\0"
"UTF-16\0"
"utf7\0"
"ucs2\0"
"ISO 10646-UCS-2\0"
"windows-1258\0"
QT_TRANSLATE_NOOP3("KCharsets", "Other", "@item Text character set")"\0"
"IBM874\0"
"TSCII\0"
"\0";
static const int language_for_encoding_indices[] = {
0, 11, 28, 11, 40, 11, 52, 11, 60, 11, 67, 78, 95, 78, 106, 117, 124, 117, 136, 148, 169, 78, 177, 185, 193, 117, 201, 208, 217, 208, 228,
208, 236, 208, 243, 208, 250, 255, 275, 255, 286, 294, 313, 294, 317, 294, 324, 331, 338, 331, 350, 355, 364, 355, 376, 355, 383, 394, 400, 394, 408, 419,
426, 419, 434, 445, 452, 445, 465, 445, 473, 185, 484, 491, 496, 491, 508, 514, 522, 514, 529, 514, 534, 514, 539, 514, 555, 568, 574, 568, 581, 568, -1};
/*
* GENERATED CODE ENDS HERE
*/
struct KCharsetsSingletonPrivate {
KCharsets instance;
};
Q_GLOBAL_STATIC(KCharsetsSingletonPrivate, globalCharsets)
// search an array of items index/data, find first matching index
// and return data, or return 0
static inline const char *kcharsets_array_search(const char *start, const int *indices, const char *entry)
{
for (int i = 0; indices[i] != -1; i += 2) {
if (qstrcmp(start + indices[i], entry) == 0) {
return start + indices[i + 1];
}
}
return nullptr;
}
// --------------------------------------------------------------------------
KCharsets::KCharsets()
: d(new KCharsetsPrivate)
{
}
KCharsets::~KCharsets() = default;
QChar KCharsets::fromEntity(QStringView str)
{
QChar res = QChar::Null;
if (str.isEmpty()) {
return QChar::Null;
}
int pos = 0;
if (str[pos] == QLatin1Char('&')) {
pos++;
}
// Check for '&#000' or '&#x0000' sequence
if (str[pos] == QLatin1Char('#') && str.length() - pos > 1) {
bool ok;
pos++;
if (str[pos] == QLatin1Char('x') || str[pos] == QLatin1Char('X')) {
pos++;
// '&#x0000', hexadecimal character reference
const auto tmp = str.mid(pos);
res = QChar(tmp.toInt(&ok, 16));
} else {
// '&#0000', decimal character reference
const auto tmp = str.mid(pos);
res = QChar(tmp.toInt(&ok, 10));
}
if (ok) {
return res;
} else {
return QChar::Null;
}
}
const QByteArray raw(str.toLatin1());
const entity *e = KCodecsEntities::kde_findEntity(raw.data(), raw.length());
if (!e) {
// qCDebug(KCODECS_LOG) << "unknown entity " << str <<", len = " << str.length();
return QChar::Null;
}
// qCDebug(KCODECS_LOG) << "got entity " << str << " = " << e->code;
return QChar(e->code);
}
QChar KCharsets::fromEntity(QStringView str, int &len)
{
// entities are never longer than 8 chars... we start from
// that length and work backwards...
len = 8;
while (len > 0) {
const auto tmp = str.left(len);
QChar res = fromEntity(tmp);
if (res != QChar::Null) {
return res;
}
len--;
}
return QChar::Null;
}
QString KCharsets::toEntity(const QChar &ch)
{
return QString::asprintf("&#0x%x;", ch.unicode());
}
QString KCharsets::resolveEntities(const QString &input)
{
QString text = input;
const QChar *p = text.unicode();
const QChar *end = p + text.length();
const QChar *ampersand = nullptr;
bool scanForSemicolon = false;
for (; p < end; ++p) {
const QChar ch = *p;
if (ch == QLatin1Char('&')) {
ampersand = p;
scanForSemicolon = true;
continue;
}
if (ch != QLatin1Char(';') || scanForSemicolon == false) {
continue;
}
assert(ampersand);
scanForSemicolon = false;
const QChar *entityBegin = ampersand + 1;
const uint entityLength = p - entityBegin;
if (entityLength == 0) {
continue;
}
const QChar entityValue = KCharsets::fromEntity(QStringView(entityBegin, entityLength));
if (entityValue.isNull()) {
continue;
}
const uint ampersandPos = ampersand - text.unicode();
text[(int)ampersandPos] = entityValue;
text.remove(ampersandPos + 1, entityLength + 1);
p = text.unicode() + ampersandPos;
end = text.unicode() + text.length();
ampersand = nullptr;
}
return text;
}
QStringList KCharsets::availableEncodingNames() const
{
QStringList available;
for (const int *p = language_for_encoding_indices; *p != -1; p += 2) {
available.append(QString::fromUtf8(language_for_encoding_string + *p));
}
available.sort();
return available;
}
QString KCharsets::descriptionForEncoding(QStringView encoding) const
{
const char *lang = kcharsets_array_search(language_for_encoding_string, language_for_encoding_indices, encoding.toUtf8().data());
if (lang) {
return tr("%1 ( %2 )", "@item %1 character set, %2 encoding").arg(tr(lang, "@item Text character set"), encoding);
} else {
return tr("Other encoding (%1)", "@item").arg(encoding);
}
}
QString KCharsets::encodingForName(const QString &descriptiveName) const
{
const int left = descriptiveName.lastIndexOf(QLatin1Char('('));
if (left < 0) { // No parenthesis, so assume it is a normal encoding name
return descriptiveName.trimmed();
}
QString name(descriptiveName.mid(left + 1));
const int right = name.lastIndexOf(QLatin1Char(')'));
if (right < 0) {
return name;
}
return name.left(right).trimmed();
}
QStringList KCharsets::descriptiveEncodingNames() const
{
QStringList encodings;
for (const int *p = language_for_encoding_indices; *p != -1; p += 2) {
const QString name = QString::fromUtf8(language_for_encoding_string + p[0]);
const QString description = tr(language_for_encoding_string + p[1], "@item Text character set");
encodings.append(tr("%1 ( %2 )", "@item Text encoding: %1 character set, %2 encoding").arg(description, name));
}
encodings.sort();
return encodings;
}
QList<QStringList> KCharsets::encodingsByScript() const
{
if (!d->encodingsByScript.isEmpty()) {
return d->encodingsByScript;
}
int i;
for (const int *p = language_for_encoding_indices; *p != -1; p += 2) {
const QString name = QString::fromUtf8(language_for_encoding_string + p[0]);
const QString description = tr(language_for_encoding_string + p[1], "@item Text character set");
for (i = 0; i < d->encodingsByScript.size(); ++i) {
if (d->encodingsByScript.at(i).at(0) == description) {
d->encodingsByScript[i].append(name);
break;
}
}
if (i == d->encodingsByScript.size()) {
d->encodingsByScript.append(QStringList() << description << name);
}
}
return d->encodingsByScript;
}
KCharsets *KCharsets::charsets()
{
return &globalCharsets()->instance;
}