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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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// Don't define it while compiling this module, or USERS of Qt will
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// not be able to link.
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#ifdef QT_NO_CAST_FROM_ASCII
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#undef QT_NO_CAST_FROM_ASCII
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#endif
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#ifdef QT_NO_CAST_TO_ASCII
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#undef QT_NO_CAST_TO_ASCII
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#endif
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#include "qchar.h"
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#include "qdatastream.h"
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#include "qtextcodec.h"
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#include "qunicodetables_p.h"
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#include "qunicodetables.cpp"
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QT_BEGIN_NAMESPACE
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#define LAST_UNICODE_CHAR 0x10ffff
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#ifndef QT_NO_CODEC_FOR_C_STRINGS
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#ifdef QT_NO_TEXTCODEC
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#define QT_NO_CODEC_FOR_C_STRINGS
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#endif
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#endif
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#define FLAG(x) (1 << (x))
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/*! \class QLatin1Char
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\brief The QLatin1Char class provides an 8-bit ASCII/Latin-1 character.
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\ingroup string-processing
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This class is only useful to avoid the codec for C strings business
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in the QChar(ch) constructor. You can avoid it by writing
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QChar(ch, 0).
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\sa QChar, QLatin1String, QString
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*/
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/*!
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\fn const char QLatin1Char::toLatin1() const
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Converts a Latin-1 character to an 8-bit ASCII representation of
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the character.
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*/
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/*!
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\fn const ushort QLatin1Char::unicode() const
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Converts a Latin-1 character to an 16-bit-encoded Unicode representation
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of the character.
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*/
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/*!
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\fn QLatin1Char::QLatin1Char(char c)
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Constructs a Latin-1 character for \a c. This constructor should be
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used when the encoding of the input character is known to be Latin-1.
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*/
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/*!
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\class QChar
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\brief The QChar class provides a 16-bit Unicode character.
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\ingroup string-processing
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\reentrant
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In Qt, Unicode characters are 16-bit entities without any markup
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or structure. This class represents such an entity. It is
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lightweight, so it can be used everywhere. Most compilers treat
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it like a \c{unsigned short}.
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QChar provides a full complement of testing/classification
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functions, converting to and from other formats, converting from
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composed to decomposed Unicode, and trying to compare and
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case-convert if you ask it to.
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The classification functions include functions like those in the
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standard C++ header \<cctype\> (formerly \<ctype.h\>), but
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operating on the full range of Unicode characters. They all
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return true if the character is a certain type of character;
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otherwise they return false. These classification functions are
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isNull() (returns true if the character is '\\0'), isPrint()
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(true if the character is any sort of printable character,
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including whitespace), isPunct() (any sort of punctation),
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isMark() (Unicode Mark), isLetter() (a letter), isNumber() (any
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sort of numeric character, not just 0-9), isLetterOrNumber(), and
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isDigit() (decimal digits). All of these are wrappers around
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category() which return the Unicode-defined category of each
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character.
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QChar also provides direction(), which indicates the "natural"
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writing direction of this character. The joining() function
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indicates how the character joins with its neighbors (needed
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mostly for Arabic) and finally hasMirrored(), which indicates
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whether the character needs to be mirrored when it is printed in
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its "unnatural" writing direction.
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Composed Unicode characters (like \aring) can be converted to
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decomposed Unicode ("a" followed by "ring above") by using
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decomposition().
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In Unicode, comparison is not necessarily possible and case
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conversion is very difficult at best. Unicode, covering the
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"entire" world, also includes most of the world's case and
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sorting problems. operator==() and friends will do comparison
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based purely on the numeric Unicode value (code point) of the
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characters, and toUpper() and toLower() will do case changes when
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the character has a well-defined uppercase/lowercase equivalent.
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For locale-dependent comparisons, use
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QString::localeAwareCompare().
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The conversion functions include unicode() (to a scalar),
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toLatin1() (to scalar, but converts all non-Latin-1 characters to
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0), row() (gives the Unicode row), cell() (gives the Unicode
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cell), digitValue() (gives the integer value of any of the
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numerous digit characters), and a host of constructors.
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QChar provides constructors and cast operators that make it easy
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to convert to and from traditional 8-bit \c{char}s. If you
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defined \c QT_NO_CAST_FROM_ASCII and \c QT_NO_CAST_TO_ASCII, as
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explained in the QString documentation, you will need to
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explicitly call fromAscii() or fromLatin1(), or use QLatin1Char,
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to construct a QChar from an 8-bit \c char, and you will need to
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call toAscii() or toLatin1() to get the 8-bit value back.
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\sa QString, Unicode, QLatin1Char
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*/
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/*!
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\enum QChar::UnicodeVersion
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Specifies which version of the \l{http://www.unicode.org/}{Unicode standard}
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introduced a certain character.
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\value Unicode_1_1 Version 1.1
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\value Unicode_2_0 Version 2.0
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\value Unicode_2_1_2 Version 2.1.2
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\value Unicode_3_0 Version 3.0
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\value Unicode_3_1 Version 3.1
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\value Unicode_3_2 Version 3.2
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\value Unicode_4_0 Version 4.0
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\value Unicode_4_1 Version 4.1
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\value Unicode_5_0 Version 5.0
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\value Unicode_Unassigned The value is not assigned to any character
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in version 5.0 of Unicode.
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\sa unicodeVersion()
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*/
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/*!
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\enum QChar::Category
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This enum maps the Unicode character categories.
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The following characters are normative in Unicode:
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\value Mark_NonSpacing Unicode class name Mn
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\value Mark_SpacingCombining Unicode class name Mc
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\value Mark_Enclosing Unicode class name Me
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\value Number_DecimalDigit Unicode class name Nd
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\value Number_Letter Unicode class name Nl
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\value Number_Other Unicode class name No
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\value Separator_Space Unicode class name Zs
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\value Separator_Line Unicode class name Zl
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\value Separator_Paragraph Unicode class name Zp
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\value Other_Control Unicode class name Cc
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\value Other_Format Unicode class name Cf
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\value Other_Surrogate Unicode class name Cs
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\value Other_PrivateUse Unicode class name Co
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\value Other_NotAssigned Unicode class name Cn
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The following categories are informative in Unicode:
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\value Letter_Uppercase Unicode class name Lu
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\value Letter_Lowercase Unicode class name Ll
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\value Letter_Titlecase Unicode class name Lt
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\value Letter_Modifier Unicode class name Lm
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\value Letter_Other Unicode class name Lo
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\value Punctuation_Connector Unicode class name Pc
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\value Punctuation_Dash Unicode class name Pd
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\value Punctuation_Open Unicode class name Ps
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\value Punctuation_Close Unicode class name Pe
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\value Punctuation_InitialQuote Unicode class name Pi
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\value Punctuation_FinalQuote Unicode class name Pf
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\value Punctuation_Other Unicode class name Po
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\value Symbol_Math Unicode class name Sm
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\value Symbol_Currency Unicode class name Sc
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\value Symbol_Modifier Unicode class name Sk
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\value Symbol_Other Unicode class name So
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\value NoCategory Qt cannot find an appropriate category for the character.
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\omitvalue Punctuation_Dask
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\sa category()
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*/
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/*!
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\enum QChar::Direction
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This enum type defines the Unicode direction attributes. See the
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\l{http://www.unicode.org/}{Unicode Standard} for a description
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of the values.
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In order to conform to C/C++ naming conventions "Dir" is prepended
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to the codes used in the Unicode Standard.
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\value DirAL
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\value DirAN
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\value DirB
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\value DirBN
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\value DirCS
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\value DirEN
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\value DirES
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\value DirET
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\value DirL
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\value DirLRE
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\value DirLRO
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\value DirNSM
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\value DirON
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\value DirPDF
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\value DirR
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\value DirRLE
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\value DirRLO
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\value DirS
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\value DirWS
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\sa direction()
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*/
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/*!
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\enum QChar::Decomposition
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This enum type defines the Unicode decomposition attributes. See
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the \l{http://www.unicode.org/}{Unicode Standard} for a
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description of the values.
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\value NoDecomposition
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\value Canonical
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\value Circle
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\value Compat
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\value Final
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\value Font
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\value Fraction
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\value Initial
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\value Isolated
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\value Medial
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\value Narrow
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\value NoBreak
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\value Small
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\value Square
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\value Sub
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\value Super
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\value Vertical
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\value Wide
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\omitvalue Single
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\sa decomposition()
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*/
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/*!
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\enum QChar::Joining
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This enum type defines the Unicode joining attributes. See the
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\l{http://www.unicode.org/}{Unicode Standard} for a description
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of the values.
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\value Center
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\value Dual
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\value OtherJoining
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\value Right
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\sa joining()
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*/
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/*!
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\enum QChar::CombiningClass
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\internal
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This enum type defines names for some of the Unicode combining
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classes. See the \l{http://www.unicode.org/}{Unicode Standard}
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for a description of the values.
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\value Combining_Above
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\value Combining_AboveAttached
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\value Combining_AboveLeft
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\value Combining_AboveLeftAttached
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\value Combining_AboveRight
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\value Combining_AboveRightAttached
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\value Combining_Below
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\value Combining_BelowAttached
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\value Combining_BelowLeft
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\value Combining_BelowLeftAttached
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\value Combining_BelowRight
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\value Combining_BelowRightAttached
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\value Combining_DoubleAbove
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\value Combining_DoubleBelow
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\value Combining_IotaSubscript
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\value Combining_Left
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\value Combining_LeftAttached
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\value Combining_Right
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\value Combining_RightAttached
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*/
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/*!
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380 |
\enum QChar::SpecialCharacter
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\value Null A QChar with this value isNull().
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\value Nbsp Non-breaking space.
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\value ReplacementCharacter
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\value ObjectReplacementCharacter The character shown when a font has no glyph for a certain codepoint. The square character is normally used.
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\value ByteOrderMark
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\value ByteOrderSwapped
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|
388 |
\value ParagraphSeparator
|
|
|
389 |
\value LineSeparator
|
|
|
390 |
|
|
|
391 |
\omitvalue null
|
|
|
392 |
\omitvalue replacement
|
|
|
393 |
\omitvalue byteOrderMark
|
|
|
394 |
\omitvalue byteOrderSwapped
|
|
|
395 |
\omitvalue nbsp
|
|
|
396 |
*/
|
|
|
397 |
|
|
|
398 |
/*!
|
|
|
399 |
\fn void QChar::setCell(uchar cell)
|
|
|
400 |
\internal
|
|
|
401 |
*/
|
|
|
402 |
|
|
|
403 |
/*!
|
|
|
404 |
\fn void QChar::setRow(uchar row)
|
|
|
405 |
\internal
|
|
|
406 |
*/
|
|
|
407 |
|
|
|
408 |
/*!
|
|
|
409 |
\fn QChar::QChar()
|
|
|
410 |
|
|
|
411 |
Constructs a null QChar ('\\0').
|
|
|
412 |
|
|
|
413 |
\sa isNull()
|
|
|
414 |
*/
|
|
|
415 |
|
|
|
416 |
/*!
|
|
|
417 |
\fn QChar::QChar(QLatin1Char ch)
|
|
|
418 |
|
|
|
419 |
Constructs a QChar corresponding to ASCII/Latin-1 character \a ch.
|
|
|
420 |
*/
|
|
|
421 |
|
|
|
422 |
/*!
|
|
|
423 |
\fn QChar::QChar(SpecialCharacter ch)
|
|
|
424 |
|
|
|
425 |
Constructs a QChar for the predefined character value \a ch.
|
|
|
426 |
*/
|
|
|
427 |
|
|
|
428 |
/*!
|
|
|
429 |
Constructs a QChar corresponding to ASCII/Latin-1 character \a
|
|
|
430 |
ch.
|
|
|
431 |
*/
|
|
|
432 |
QChar::QChar(char ch)
|
|
|
433 |
{
|
|
|
434 |
#ifndef QT_NO_CODEC_FOR_C_STRINGS
|
|
|
435 |
if (QTextCodec::codecForCStrings())
|
|
|
436 |
// #####
|
|
|
437 |
ucs = QTextCodec::codecForCStrings()->toUnicode(&ch, 1).at(0).unicode();
|
|
|
438 |
else
|
|
|
439 |
#endif
|
|
|
440 |
ucs = uchar(ch);
|
|
|
441 |
}
|
|
|
442 |
|
|
|
443 |
/*!
|
|
|
444 |
Constructs a QChar corresponding to ASCII/Latin-1 character \a ch.
|
|
|
445 |
*/
|
|
|
446 |
QChar::QChar(uchar ch)
|
|
|
447 |
{
|
|
|
448 |
#ifndef QT_NO_CODEC_FOR_C_STRINGS
|
|
|
449 |
if (QTextCodec::codecForCStrings()) {
|
|
|
450 |
// #####
|
|
|
451 |
char c = char(ch);
|
|
|
452 |
ucs = QTextCodec::codecForCStrings()->toUnicode(&c, 1).at(0).unicode();
|
|
|
453 |
} else
|
|
|
454 |
#endif
|
|
|
455 |
ucs = ch;
|
|
|
456 |
}
|
|
|
457 |
|
|
|
458 |
/*!
|
|
|
459 |
\fn QChar::QChar(uchar cell, uchar row)
|
|
|
460 |
|
|
|
461 |
Constructs a QChar for Unicode cell \a cell in row \a row.
|
|
|
462 |
|
|
|
463 |
\sa cell(), row()
|
|
|
464 |
*/
|
|
|
465 |
|
|
|
466 |
/*!
|
|
|
467 |
\fn QChar::QChar(ushort code)
|
|
|
468 |
|
|
|
469 |
Constructs a QChar for the character with Unicode code point \a
|
|
|
470 |
code.
|
|
|
471 |
*/
|
|
|
472 |
|
|
|
473 |
|
|
|
474 |
/*!
|
|
|
475 |
\fn QChar::QChar(short code)
|
|
|
476 |
|
|
|
477 |
Constructs a QChar for the character with Unicode code point \a
|
|
|
478 |
code.
|
|
|
479 |
*/
|
|
|
480 |
|
|
|
481 |
|
|
|
482 |
/*!
|
|
|
483 |
\fn QChar::QChar(uint code)
|
|
|
484 |
|
|
|
485 |
Constructs a QChar for the character with Unicode code point \a
|
|
|
486 |
code.
|
|
|
487 |
*/
|
|
|
488 |
|
|
|
489 |
|
|
|
490 |
/*!
|
|
|
491 |
\fn QChar::QChar(int code)
|
|
|
492 |
|
|
|
493 |
Constructs a QChar for the character with Unicode code point \a
|
|
|
494 |
code.
|
|
|
495 |
*/
|
|
|
496 |
|
|
|
497 |
|
|
|
498 |
/*!
|
|
|
499 |
\fn bool QChar::isNull() const
|
|
|
500 |
|
|
|
501 |
Returns true if the character is the Unicode character 0x0000
|
|
|
502 |
('\\0'); otherwise returns false.
|
|
|
503 |
*/
|
|
|
504 |
|
|
|
505 |
/*!
|
|
|
506 |
\fn uchar QChar::cell() const
|
|
|
507 |
|
|
|
508 |
Returns the cell (least significant byte) of the Unicode
|
|
|
509 |
character.
|
|
|
510 |
|
|
|
511 |
\sa row()
|
|
|
512 |
*/
|
|
|
513 |
|
|
|
514 |
/*!
|
|
|
515 |
\fn uchar QChar::row() const
|
|
|
516 |
|
|
|
517 |
Returns the row (most significant byte) of the Unicode character.
|
|
|
518 |
|
|
|
519 |
\sa cell()
|
|
|
520 |
*/
|
|
|
521 |
|
|
|
522 |
/*!
|
|
|
523 |
Returns true if the character is a printable character; otherwise
|
|
|
524 |
returns false. This is any character not of category Cc or Cn.
|
|
|
525 |
|
|
|
526 |
Note that this gives no indication of whether the character is
|
|
|
527 |
available in a particular font.
|
|
|
528 |
*/
|
|
|
529 |
bool QChar::isPrint() const
|
|
|
530 |
{
|
|
|
531 |
const int test = FLAG(Other_Control) |
|
|
|
532 |
FLAG(Other_NotAssigned);
|
|
|
533 |
return !(FLAG(qGetProp(ucs)->category) & test);
|
|
|
534 |
}
|
|
|
535 |
|
|
|
536 |
/*!
|
|
|
537 |
Returns true if the character is a separator character
|
|
|
538 |
(Separator_* categories); otherwise returns false.
|
|
|
539 |
*/
|
|
|
540 |
bool QChar::isSpace() const
|
|
|
541 |
{
|
|
|
542 |
if(ucs >= 9 && ucs <=13)
|
|
|
543 |
return true;
|
|
|
544 |
const int test = FLAG(Separator_Space) |
|
|
|
545 |
FLAG(Separator_Line) |
|
|
|
546 |
FLAG(Separator_Paragraph);
|
|
|
547 |
return FLAG(qGetProp(ucs)->category) & test;
|
|
|
548 |
}
|
|
|
549 |
|
|
|
550 |
/*!
|
|
|
551 |
Returns true if the character is a mark (Mark_* categories);
|
|
|
552 |
otherwise returns false.
|
|
|
553 |
|
|
|
554 |
See QChar::Category for more information regarding marks.
|
|
|
555 |
*/
|
|
|
556 |
bool QChar::isMark() const
|
|
|
557 |
{
|
|
|
558 |
const int test = FLAG(Mark_NonSpacing) |
|
|
|
559 |
FLAG(Mark_SpacingCombining) |
|
|
|
560 |
FLAG(Mark_Enclosing);
|
|
|
561 |
return FLAG(qGetProp(ucs)->category) & test;
|
|
|
562 |
}
|
|
|
563 |
|
|
|
564 |
/*!
|
|
|
565 |
Returns true if the character is a punctuation mark (Punctuation_*
|
|
|
566 |
categories); otherwise returns false.
|
|
|
567 |
*/
|
|
|
568 |
bool QChar::isPunct() const
|
|
|
569 |
{
|
|
|
570 |
const int test = FLAG(Punctuation_Connector) |
|
|
|
571 |
FLAG(Punctuation_Dash) |
|
|
|
572 |
FLAG(Punctuation_Open) |
|
|
|
573 |
FLAG(Punctuation_Close) |
|
|
|
574 |
FLAG(Punctuation_InitialQuote) |
|
|
|
575 |
FLAG(Punctuation_FinalQuote) |
|
|
|
576 |
FLAG(Punctuation_Other);
|
|
|
577 |
return FLAG(qGetProp(ucs)->category) & test;
|
|
|
578 |
}
|
|
|
579 |
|
|
|
580 |
/*!
|
|
|
581 |
Returns true if the character is a letter (Letter_* categories);
|
|
|
582 |
otherwise returns false.
|
|
|
583 |
*/
|
|
|
584 |
bool QChar::isLetter() const
|
|
|
585 |
{
|
|
|
586 |
const int test = FLAG(Letter_Uppercase) |
|
|
|
587 |
FLAG(Letter_Lowercase) |
|
|
|
588 |
FLAG(Letter_Titlecase) |
|
|
|
589 |
FLAG(Letter_Modifier) |
|
|
|
590 |
FLAG(Letter_Other);
|
|
|
591 |
return FLAG(qGetProp(ucs)->category) & test;
|
|
|
592 |
}
|
|
|
593 |
|
|
|
594 |
/*!
|
|
|
595 |
Returns true if the character is a number (Number_* categories,
|
|
|
596 |
not just 0-9); otherwise returns false.
|
|
|
597 |
|
|
|
598 |
\sa isDigit()
|
|
|
599 |
*/
|
|
|
600 |
bool QChar::isNumber() const
|
|
|
601 |
{
|
|
|
602 |
const int test = FLAG(Number_DecimalDigit) |
|
|
|
603 |
FLAG(Number_Letter) |
|
|
|
604 |
FLAG(Number_Other);
|
|
|
605 |
return FLAG(qGetProp(ucs)->category) & test;
|
|
|
606 |
}
|
|
|
607 |
|
|
|
608 |
/*!
|
|
|
609 |
Returns true if the character is a letter or number (Letter_* or
|
|
|
610 |
Number_* categories); otherwise returns false.
|
|
|
611 |
*/
|
|
|
612 |
bool QChar::isLetterOrNumber() const
|
|
|
613 |
{
|
|
|
614 |
const int test = FLAG(Letter_Uppercase) |
|
|
|
615 |
FLAG(Letter_Lowercase) |
|
|
|
616 |
FLAG(Letter_Titlecase) |
|
|
|
617 |
FLAG(Letter_Modifier) |
|
|
|
618 |
FLAG(Letter_Other) |
|
|
|
619 |
FLAG(Number_DecimalDigit) |
|
|
|
620 |
FLAG(Number_Letter) |
|
|
|
621 |
FLAG(Number_Other);
|
|
|
622 |
return FLAG(qGetProp(ucs)->category) & test;
|
|
|
623 |
}
|
|
|
624 |
|
|
|
625 |
|
|
|
626 |
/*!
|
|
|
627 |
Returns true if the character is a decimal digit
|
|
|
628 |
(Number_DecimalDigit); otherwise returns false.
|
|
|
629 |
*/
|
|
|
630 |
bool QChar::isDigit() const
|
|
|
631 |
{
|
|
|
632 |
return (qGetProp(ucs)->category == Number_DecimalDigit);
|
|
|
633 |
}
|
|
|
634 |
|
|
|
635 |
|
|
|
636 |
/*!
|
|
|
637 |
Returns true if the character is a symbol (Symbol_* categories);
|
|
|
638 |
otherwise returns false.
|
|
|
639 |
*/
|
|
|
640 |
bool QChar::isSymbol() const
|
|
|
641 |
{
|
|
|
642 |
const int test = FLAG(Symbol_Math) |
|
|
|
643 |
FLAG(Symbol_Currency) |
|
|
|
644 |
FLAG(Symbol_Modifier) |
|
|
|
645 |
FLAG(Symbol_Other);
|
|
|
646 |
return FLAG(qGetProp(ucs)->category) & test;
|
|
|
647 |
}
|
|
|
648 |
|
|
|
649 |
/*!
|
|
|
650 |
\fn bool QChar::isHighSurrogate() const
|
|
|
651 |
|
|
|
652 |
Returns true if the QChar is the high part of a utf16 surrogate
|
|
|
653 |
(ie. if its code point is between 0xd800 and 0xdbff).
|
|
|
654 |
*/
|
|
|
655 |
|
|
|
656 |
/*!
|
|
|
657 |
\fn bool QChar::isLowSurrogate() const
|
|
|
658 |
|
|
|
659 |
Returns true if the QChar is the low part of a utf16 surrogate
|
|
|
660 |
(ie. if its code point is between 0xdc00 and 0xdfff).
|
|
|
661 |
*/
|
|
|
662 |
|
|
|
663 |
/*!
|
|
|
664 |
\fn static uint QChar::surrogateToUcs4(ushort high, ushort low)
|
|
|
665 |
|
|
|
666 |
Converts a UTF16 surrogate pair with the given \a high and \a low values
|
|
|
667 |
to its UCS-4 code point.
|
|
|
668 |
*/
|
|
|
669 |
|
|
|
670 |
/*!
|
|
|
671 |
\fn static uint QChar::surrogateToUcs4(QChar high, QChar low)
|
|
|
672 |
|
|
|
673 |
Converts a utf16 surrogate pair (\a high, \a low) to its ucs4 code
|
|
|
674 |
point.
|
|
|
675 |
*/
|
|
|
676 |
|
|
|
677 |
/*!
|
|
|
678 |
\fn static ushort QChar::highSurrogate(uint ucs4)
|
|
|
679 |
|
|
|
680 |
Returns the high surrogate value of a ucs4 code point.
|
|
|
681 |
The returned result is undefined if \a ucs4 is smaller than 0x10000.
|
|
|
682 |
*/
|
|
|
683 |
|
|
|
684 |
/*!
|
|
|
685 |
\fn static ushort QChar::lowSurrogate(uint ucs4)
|
|
|
686 |
|
|
|
687 |
Returns the low surrogate value of a ucs4 code point.
|
|
|
688 |
The returned result is undefined if \a ucs4 is smaller than 0x10000.
|
|
|
689 |
*/
|
|
|
690 |
|
|
|
691 |
/*!
|
|
|
692 |
Returns the numeric value of the digit, or -1 if the character is
|
|
|
693 |
not a digit.
|
|
|
694 |
*/
|
|
|
695 |
int QChar::digitValue() const
|
|
|
696 |
{
|
|
|
697 |
return qGetProp(ucs)->digitValue;
|
|
|
698 |
}
|
|
|
699 |
|
|
|
700 |
/*!
|
|
|
701 |
\overload
|
|
|
702 |
Returns the numeric value of the digit, specified by the UCS-2-encoded
|
|
|
703 |
character, \a ucs2, or -1 if the character is not a digit.
|
|
|
704 |
*/
|
|
|
705 |
int QChar::digitValue(ushort ucs2)
|
|
|
706 |
{
|
|
|
707 |
return qGetProp(ucs2)->digitValue;
|
|
|
708 |
}
|
|
|
709 |
|
|
|
710 |
/*!
|
|
|
711 |
\overload
|
|
|
712 |
Returns the numeric value of the digit specified by the UCS-4-encoded
|
|
|
713 |
character, \a ucs4, or -1 if the character is not a digit.
|
|
|
714 |
*/
|
|
|
715 |
int QChar::digitValue(uint ucs4)
|
|
|
716 |
{
|
|
|
717 |
if (ucs4 > LAST_UNICODE_CHAR)
|
|
|
718 |
return 0;
|
|
|
719 |
return qGetProp(ucs4)->digitValue;
|
|
|
720 |
}
|
|
|
721 |
|
|
|
722 |
/*!
|
|
|
723 |
Returns the character's category.
|
|
|
724 |
*/
|
|
|
725 |
QChar::Category QChar::category() const
|
|
|
726 |
{
|
|
|
727 |
return (QChar::Category) qGetProp(ucs)->category;
|
|
|
728 |
}
|
|
|
729 |
|
|
|
730 |
/*!
|
|
|
731 |
\overload
|
|
|
732 |
\since 4.3
|
|
|
733 |
Returns the category of the UCS-4-encoded character specified by \a ucs4.
|
|
|
734 |
*/
|
|
|
735 |
QChar::Category QChar::category(uint ucs4)
|
|
|
736 |
{
|
|
|
737 |
if (ucs4 > LAST_UNICODE_CHAR)
|
|
|
738 |
return QChar::NoCategory;
|
|
|
739 |
return (QChar::Category) qGetProp(ucs4)->category;
|
|
|
740 |
}
|
|
|
741 |
|
|
|
742 |
/*!
|
|
|
743 |
\overload
|
|
|
744 |
Returns the category of the UCS-2-encoded character specified by \a ucs2.
|
|
|
745 |
*/
|
|
|
746 |
QChar::Category QChar::category(ushort ucs2)
|
|
|
747 |
{
|
|
|
748 |
return (QChar::Category) qGetProp(ucs2)->category;
|
|
|
749 |
}
|
|
|
750 |
|
|
|
751 |
|
|
|
752 |
/*!
|
|
|
753 |
Returns the character's direction.
|
|
|
754 |
*/
|
|
|
755 |
QChar::Direction QChar::direction() const
|
|
|
756 |
{
|
|
|
757 |
return (QChar::Direction) qGetProp(ucs)->direction;
|
|
|
758 |
}
|
|
|
759 |
|
|
|
760 |
/*!
|
|
|
761 |
\overload
|
|
|
762 |
Returns the direction of the UCS-4-encoded character specified by \a ucs4.
|
|
|
763 |
*/
|
|
|
764 |
QChar::Direction QChar::direction(uint ucs4)
|
|
|
765 |
{
|
|
|
766 |
if (ucs4 > LAST_UNICODE_CHAR)
|
|
|
767 |
return QChar::DirL;
|
|
|
768 |
return (QChar::Direction) qGetProp(ucs4)->direction;
|
|
|
769 |
}
|
|
|
770 |
|
|
|
771 |
/*!
|
|
|
772 |
\overload
|
|
|
773 |
Returns the direction of the UCS-2-encoded character specified by \a ucs2.
|
|
|
774 |
*/
|
|
|
775 |
QChar::Direction QChar::direction(ushort ucs2)
|
|
|
776 |
{
|
|
|
777 |
return (QChar::Direction) qGetProp(ucs2)->direction;
|
|
|
778 |
}
|
|
|
779 |
|
|
|
780 |
/*!
|
|
|
781 |
Returns information about the joining properties of the character
|
|
|
782 |
(needed for certain languages such as Arabic).
|
|
|
783 |
*/
|
|
|
784 |
QChar::Joining QChar::joining() const
|
|
|
785 |
{
|
|
|
786 |
return (QChar::Joining) qGetProp(ucs)->joining;
|
|
|
787 |
}
|
|
|
788 |
|
|
|
789 |
/*!
|
|
|
790 |
\overload
|
|
|
791 |
Returns information about the joining properties of the UCS-4-encoded
|
|
|
792 |
character specified by \a ucs4 (needed for certain languages such as
|
|
|
793 |
Arabic).
|
|
|
794 |
*/
|
|
|
795 |
QChar::Joining QChar::joining(uint ucs4)
|
|
|
796 |
{
|
|
|
797 |
if (ucs4 > LAST_UNICODE_CHAR)
|
|
|
798 |
return QChar::OtherJoining;
|
|
|
799 |
return (QChar::Joining) qGetProp(ucs4)->joining;
|
|
|
800 |
}
|
|
|
801 |
|
|
|
802 |
/*!
|
|
|
803 |
\overload
|
|
|
804 |
Returns information about the joining properties of the UCS-2-encoded
|
|
|
805 |
character specified by \a ucs2 (needed for certain languages such as
|
|
|
806 |
Arabic).
|
|
|
807 |
*/
|
|
|
808 |
QChar::Joining QChar::joining(ushort ucs2)
|
|
|
809 |
{
|
|
|
810 |
return (QChar::Joining) qGetProp(ucs2)->joining;
|
|
|
811 |
}
|
|
|
812 |
|
|
|
813 |
|
|
|
814 |
/*!
|
|
|
815 |
Returns true if the character should be reversed if the text
|
|
|
816 |
direction is reversed; otherwise returns false.
|
|
|
817 |
|
|
|
818 |
Same as (ch.mirroredChar() != ch).
|
|
|
819 |
|
|
|
820 |
\sa mirroredChar()
|
|
|
821 |
*/
|
|
|
822 |
bool QChar::hasMirrored() const
|
|
|
823 |
{
|
|
|
824 |
return qGetProp(ucs)->mirrorDiff != 0;
|
|
|
825 |
}
|
|
|
826 |
|
|
|
827 |
/*!
|
|
|
828 |
\fn bool QChar::isLower() const
|
|
|
829 |
|
|
|
830 |
Returns true if the character is a lowercase letter, i.e.
|
|
|
831 |
category() is Letter_Lowercase.
|
|
|
832 |
|
|
|
833 |
\sa isUpper(), toLower(), toUpper()
|
|
|
834 |
*/
|
|
|
835 |
|
|
|
836 |
/*!
|
|
|
837 |
\fn bool QChar::isUpper() const
|
|
|
838 |
|
|
|
839 |
Returns true if the character is an uppercase letter, i.e.
|
|
|
840 |
category() is Letter_Uppercase.
|
|
|
841 |
|
|
|
842 |
\sa isLower(), toUpper(), toLower()
|
|
|
843 |
*/
|
|
|
844 |
|
|
|
845 |
/*!
|
|
|
846 |
\fn bool QChar::isTitleCase() const
|
|
|
847 |
\since 4.3
|
|
|
848 |
|
|
|
849 |
Returns true if the character is a titlecase letter, i.e.
|
|
|
850 |
category() is Letter_Titlecase.
|
|
|
851 |
|
|
|
852 |
\sa isLower(), toUpper(), toLower(), toTitleCase()
|
|
|
853 |
*/
|
|
|
854 |
|
|
|
855 |
/*!
|
|
|
856 |
Returns the mirrored character if this character is a mirrored
|
|
|
857 |
character; otherwise returns the character itself.
|
|
|
858 |
|
|
|
859 |
\sa hasMirrored()
|
|
|
860 |
*/
|
|
|
861 |
QChar QChar::mirroredChar() const
|
|
|
862 |
{
|
|
|
863 |
return ucs + qGetProp(ucs)->mirrorDiff;
|
|
|
864 |
}
|
|
|
865 |
|
|
|
866 |
/*! \overload
|
|
|
867 |
Returns the mirrored character if the UCS-4-encoded character specified
|
|
|
868 |
by \a ucs4 is a mirrored character; otherwise returns the character itself.
|
|
|
869 |
|
|
|
870 |
\sa hasMirrored()
|
|
|
871 |
*/
|
|
|
872 |
uint QChar::mirroredChar(uint ucs4)
|
|
|
873 |
{
|
|
|
874 |
if (ucs4 > LAST_UNICODE_CHAR)
|
|
|
875 |
return ucs4;
|
|
|
876 |
return ucs4 + qGetProp(ucs4)->mirrorDiff;
|
|
|
877 |
}
|
|
|
878 |
|
|
|
879 |
/*!
|
|
|
880 |
\overload
|
|
|
881 |
Returns the mirrored character if the UCS-2-encoded character specified
|
|
|
882 |
by \a ucs2 is a mirrored character; otherwise returns the character itself.
|
|
|
883 |
|
|
|
884 |
\sa hasMirrored()
|
|
|
885 |
*/
|
|
|
886 |
ushort QChar::mirroredChar(ushort ucs2)
|
|
|
887 |
{
|
|
|
888 |
return ucs2 + qGetProp(ucs2)->mirrorDiff;
|
|
|
889 |
}
|
|
|
890 |
|
|
|
891 |
|
|
|
892 |
enum {
|
|
|
893 |
Hangul_SBase = 0xac00,
|
|
|
894 |
Hangul_LBase = 0x1100,
|
|
|
895 |
Hangul_VBase = 0x1161,
|
|
|
896 |
Hangul_TBase = 0x11a7,
|
|
|
897 |
Hangul_SCount = 11172,
|
|
|
898 |
Hangul_LCount = 19,
|
|
|
899 |
Hangul_VCount = 21,
|
|
|
900 |
Hangul_TCount = 28,
|
|
|
901 |
Hangul_NCount = 21*28
|
|
|
902 |
};
|
|
|
903 |
|
|
|
904 |
// buffer has to have a length of 3. It's needed for Hangul decomposition
|
|
|
905 |
static const unsigned short * QT_FASTCALL decompositionHelper
|
|
|
906 |
(uint ucs4, int *length, int *tag, unsigned short *buffer)
|
|
|
907 |
{
|
|
|
908 |
*length = 0;
|
|
|
909 |
if (ucs4 > LAST_UNICODE_CHAR)
|
|
|
910 |
return 0;
|
|
|
911 |
if (ucs4 >= Hangul_SBase && ucs4 < Hangul_SBase + Hangul_SCount) {
|
|
|
912 |
int SIndex = ucs4 - Hangul_SBase;
|
|
|
913 |
buffer[0] = Hangul_LBase + SIndex / Hangul_NCount; // L
|
|
|
914 |
buffer[1] = Hangul_VBase + (SIndex % Hangul_NCount) / Hangul_TCount; // V
|
|
|
915 |
buffer[2] = Hangul_TBase + SIndex % Hangul_TCount; // T
|
|
|
916 |
*length = buffer[2] == Hangul_TBase ? 2 : 3;
|
|
|
917 |
*tag = QChar::Canonical;
|
|
|
918 |
return buffer;
|
|
|
919 |
}
|
|
|
920 |
|
|
|
921 |
const unsigned short index = GET_DECOMPOSITION_INDEX(ucs4);
|
|
|
922 |
if (index == 0xffff)
|
|
|
923 |
return 0;
|
|
|
924 |
const unsigned short *decomposition = uc_decomposition_map+index;
|
|
|
925 |
*tag = (*decomposition) & 0xff;
|
|
|
926 |
*length = (*decomposition) >> 8;
|
|
|
927 |
return decomposition+1;
|
|
|
928 |
}
|
|
|
929 |
|
|
|
930 |
/*!
|
|
|
931 |
Decomposes a character into its parts. Returns an empty string if
|
|
|
932 |
no decomposition exists.
|
|
|
933 |
*/
|
|
|
934 |
QString QChar::decomposition() const
|
|
|
935 |
{
|
|
|
936 |
return decomposition(ucs);
|
|
|
937 |
}
|
|
|
938 |
|
|
|
939 |
/*!
|
|
|
940 |
\overload
|
|
|
941 |
Decomposes the UCS-4-encoded character specified by \a ucs4 into its
|
|
|
942 |
constituent parts. Returns an empty string if no decomposition exists.
|
|
|
943 |
*/
|
|
|
944 |
QString QChar::decomposition(uint ucs4)
|
|
|
945 |
{
|
|
|
946 |
unsigned short buffer[3];
|
|
|
947 |
int length;
|
|
|
948 |
int tag;
|
|
|
949 |
const unsigned short *d = decompositionHelper(ucs4, &length, &tag, buffer);
|
|
|
950 |
return QString::fromUtf16(d, length);
|
|
|
951 |
}
|
|
|
952 |
|
|
|
953 |
/*!
|
|
|
954 |
Returns the tag defining the composition of the character. Returns
|
|
|
955 |
QChar::Single if no decomposition exists.
|
|
|
956 |
*/
|
|
|
957 |
QChar::Decomposition QChar::decompositionTag() const
|
|
|
958 |
{
|
|
|
959 |
return decompositionTag(ucs);
|
|
|
960 |
}
|
|
|
961 |
|
|
|
962 |
/*!
|
|
|
963 |
\overload
|
|
|
964 |
Returns the tag defining the composition of the UCS-4-encoded character
|
|
|
965 |
specified by \a ucs4. Returns QChar::Single if no decomposition exists.
|
|
|
966 |
*/
|
|
|
967 |
QChar::Decomposition QChar::decompositionTag(uint ucs4)
|
|
|
968 |
{
|
|
|
969 |
if (ucs4 > LAST_UNICODE_CHAR)
|
|
|
970 |
return QChar::NoDecomposition;
|
|
|
971 |
const unsigned short index = GET_DECOMPOSITION_INDEX(ucs4);
|
|
|
972 |
if (index == 0xffff)
|
|
|
973 |
return QChar::NoDecomposition;
|
|
|
974 |
return (QChar::Decomposition)(uc_decomposition_map[index] & 0xff);
|
|
|
975 |
}
|
|
|
976 |
|
|
|
977 |
/*!
|
|
|
978 |
Returns the combining class for the character as defined in the
|
|
|
979 |
Unicode standard. This is mainly useful as a positioning hint for
|
|
|
980 |
marks attached to a base character.
|
|
|
981 |
|
|
|
982 |
The Qt text rendering engine uses this information to correctly
|
|
|
983 |
position non-spacing marks around a base character.
|
|
|
984 |
*/
|
|
|
985 |
unsigned char QChar::combiningClass() const
|
|
|
986 |
{
|
|
|
987 |
return (unsigned char) qGetProp(ucs)->combiningClass;
|
|
|
988 |
}
|
|
|
989 |
|
|
|
990 |
/*! \overload
|
|
|
991 |
Returns the combining class for the UCS-4-encoded character specified by
|
|
|
992 |
\a ucs4, as defined in the Unicode standard.
|
|
|
993 |
*/
|
|
|
994 |
unsigned char QChar::combiningClass(uint ucs4)
|
|
|
995 |
{
|
|
|
996 |
if (ucs4 > LAST_UNICODE_CHAR)
|
|
|
997 |
return 0;
|
|
|
998 |
return (unsigned char) qGetProp(ucs4)->combiningClass;
|
|
|
999 |
}
|
|
|
1000 |
|
|
|
1001 |
/*! \overload
|
|
|
1002 |
Returns the combining class for the UCS-2-encoded character specified by
|
|
|
1003 |
\a ucs2, as defined in the Unicode standard.
|
|
|
1004 |
*/
|
|
|
1005 |
unsigned char QChar::combiningClass(ushort ucs2)
|
|
|
1006 |
{
|
|
|
1007 |
return (unsigned char) qGetProp(ucs2)->combiningClass;
|
|
|
1008 |
}
|
|
|
1009 |
|
|
|
1010 |
|
|
|
1011 |
/*!
|
|
|
1012 |
Returns the Unicode version that introduced this character.
|
|
|
1013 |
*/
|
|
|
1014 |
QChar::UnicodeVersion QChar::unicodeVersion() const
|
|
|
1015 |
{
|
|
|
1016 |
return (QChar::UnicodeVersion) qGetProp(ucs)->unicodeVersion;
|
|
|
1017 |
}
|
|
|
1018 |
|
|
|
1019 |
/*! \overload
|
|
|
1020 |
Returns the Unicode version that introduced the character specified in
|
|
|
1021 |
its UCS-4-encoded form as \a ucs4.
|
|
|
1022 |
*/
|
|
|
1023 |
QChar::UnicodeVersion QChar::unicodeVersion(uint ucs4)
|
|
|
1024 |
{
|
|
|
1025 |
if (ucs4 > LAST_UNICODE_CHAR)
|
|
|
1026 |
return QChar::Unicode_Unassigned;
|
|
|
1027 |
return (QChar::UnicodeVersion) qGetProp(ucs4)->unicodeVersion;
|
|
|
1028 |
}
|
|
|
1029 |
|
|
|
1030 |
/*! \overload
|
|
|
1031 |
Returns the Unicode version that introduced the character specified in
|
|
|
1032 |
its UCS-2-encoded form as \a ucs2.
|
|
|
1033 |
*/
|
|
|
1034 |
QChar::UnicodeVersion QChar::unicodeVersion(ushort ucs2)
|
|
|
1035 |
{
|
|
|
1036 |
return (QChar::UnicodeVersion) qGetProp(ucs2)->unicodeVersion;
|
|
|
1037 |
}
|
|
|
1038 |
|
|
|
1039 |
|
|
|
1040 |
/*!
|
|
|
1041 |
Returns the lowercase equivalent if the character is uppercase or titlecase;
|
|
|
1042 |
otherwise returns the character itself.
|
|
|
1043 |
*/
|
|
|
1044 |
QChar QChar::toLower() const
|
|
|
1045 |
{
|
|
|
1046 |
const QUnicodeTables::Properties *p = qGetProp(ucs);
|
|
|
1047 |
if (!p->lowerCaseSpecial)
|
|
|
1048 |
return ucs + p->lowerCaseDiff;
|
|
|
1049 |
return ucs;
|
|
|
1050 |
}
|
|
|
1051 |
|
|
|
1052 |
/*! \overload
|
|
|
1053 |
Returns the lowercase equivalent of the UCS-4-encoded character specified
|
|
|
1054 |
by \a ucs4 if the character is uppercase or titlecase; otherwise returns
|
|
|
1055 |
the character itself.
|
|
|
1056 |
*/
|
|
|
1057 |
uint QChar::toLower(uint ucs4)
|
|
|
1058 |
{
|
|
|
1059 |
if (ucs4 > LAST_UNICODE_CHAR)
|
|
|
1060 |
return ucs4;
|
|
|
1061 |
const QUnicodeTables::Properties *p = qGetProp(ucs4);
|
|
|
1062 |
if (!p->lowerCaseSpecial)
|
|
|
1063 |
return ucs4 + p->lowerCaseDiff;
|
|
|
1064 |
return ucs4;
|
|
|
1065 |
}
|
|
|
1066 |
|
|
|
1067 |
/*! \overload
|
|
|
1068 |
Returns the lowercase equivalent of the UCS-2-encoded character specified
|
|
|
1069 |
by \a ucs2 if the character is uppercase or titlecase; otherwise returns
|
|
|
1070 |
the character itself.
|
|
|
1071 |
*/
|
|
|
1072 |
ushort QChar::toLower(ushort ucs2)
|
|
|
1073 |
{
|
|
|
1074 |
const QUnicodeTables::Properties *p = qGetProp(ucs2);
|
|
|
1075 |
if (!p->lowerCaseSpecial)
|
|
|
1076 |
return ucs2 + p->lowerCaseDiff;
|
|
|
1077 |
return ucs2;
|
|
|
1078 |
}
|
|
|
1079 |
|
|
|
1080 |
/*!
|
|
|
1081 |
Returns the uppercase equivalent if the character is lowercase or titlecase;
|
|
|
1082 |
otherwise returns the character itself.
|
|
|
1083 |
*/
|
|
|
1084 |
QChar QChar::toUpper() const
|
|
|
1085 |
{
|
|
|
1086 |
const QUnicodeTables::Properties *p = qGetProp(ucs);
|
|
|
1087 |
if (!p->upperCaseSpecial)
|
|
|
1088 |
return ucs + p->upperCaseDiff;
|
|
|
1089 |
return ucs;
|
|
|
1090 |
}
|
|
|
1091 |
|
|
|
1092 |
/*! \overload
|
|
|
1093 |
Returns the uppercase equivalent of the UCS-4-encoded character specified
|
|
|
1094 |
by \a ucs4 if the character is lowercase or titlecase; otherwise returns
|
|
|
1095 |
the character itself.
|
|
|
1096 |
*/
|
|
|
1097 |
uint QChar::toUpper(uint ucs4)
|
|
|
1098 |
{
|
|
|
1099 |
if (ucs4 > LAST_UNICODE_CHAR)
|
|
|
1100 |
return ucs4;
|
|
|
1101 |
const QUnicodeTables::Properties *p = qGetProp(ucs4);
|
|
|
1102 |
if (!p->upperCaseSpecial)
|
|
|
1103 |
return ucs4 + p->upperCaseDiff;
|
|
|
1104 |
return ucs4;
|
|
|
1105 |
}
|
|
|
1106 |
|
|
|
1107 |
/*! \overload
|
|
|
1108 |
Returns the uppercase equivalent of the UCS-2-encoded character specified
|
|
|
1109 |
by \a ucs2 if the character is lowercase or titlecase; otherwise returns
|
|
|
1110 |
the character itself.
|
|
|
1111 |
*/
|
|
|
1112 |
ushort QChar::toUpper(ushort ucs2)
|
|
|
1113 |
{
|
|
|
1114 |
const QUnicodeTables::Properties *p = qGetProp(ucs2);
|
|
|
1115 |
if (!p->upperCaseSpecial)
|
|
|
1116 |
return ucs2 + p->upperCaseDiff;
|
|
|
1117 |
return ucs2;
|
|
|
1118 |
}
|
|
|
1119 |
|
|
|
1120 |
/*!
|
|
|
1121 |
Returns the title case equivalent if the character is lowercase or uppercase;
|
|
|
1122 |
otherwise returns the character itself.
|
|
|
1123 |
*/
|
|
|
1124 |
QChar QChar::toTitleCase() const
|
|
|
1125 |
{
|
|
|
1126 |
const QUnicodeTables::Properties *p = qGetProp(ucs);
|
|
|
1127 |
if (!p->titleCaseSpecial)
|
|
|
1128 |
return ucs + p->titleCaseDiff;
|
|
|
1129 |
return ucs;
|
|
|
1130 |
}
|
|
|
1131 |
|
|
|
1132 |
/*!
|
|
|
1133 |
\overload
|
|
|
1134 |
Returns the title case equivalent of the UCS-4-encoded character specified
|
|
|
1135 |
by \a ucs4 if the character is lowercase or uppercase; otherwise returns
|
|
|
1136 |
the character itself.
|
|
|
1137 |
*/
|
|
|
1138 |
uint QChar::toTitleCase(uint ucs4)
|
|
|
1139 |
{
|
|
|
1140 |
if (ucs4 > LAST_UNICODE_CHAR)
|
|
|
1141 |
return ucs4;
|
|
|
1142 |
const QUnicodeTables::Properties *p = qGetProp(ucs4);
|
|
|
1143 |
if (!p->titleCaseSpecial)
|
|
|
1144 |
return ucs4 + p->titleCaseDiff;
|
|
|
1145 |
return ucs4;
|
|
|
1146 |
}
|
|
|
1147 |
|
|
|
1148 |
/*!
|
|
|
1149 |
\overload
|
|
|
1150 |
Returns the title case equivalent of the UCS-2-encoded character specified
|
|
|
1151 |
by \a ucs2 if the character is lowercase or uppercase; otherwise returns
|
|
|
1152 |
the character itself.
|
|
|
1153 |
*/
|
|
|
1154 |
ushort QChar::toTitleCase(ushort ucs2)
|
|
|
1155 |
{
|
|
|
1156 |
const QUnicodeTables::Properties *p = qGetProp(ucs2);
|
|
|
1157 |
if (!p->titleCaseSpecial)
|
|
|
1158 |
return ucs2 + p->titleCaseDiff;
|
|
|
1159 |
return ucs2;
|
|
|
1160 |
}
|
|
|
1161 |
|
|
|
1162 |
|
|
|
1163 |
static inline uint foldCase(const ushort *ch, const ushort *start)
|
|
|
1164 |
{
|
|
|
1165 |
uint c = *ch;
|
|
|
1166 |
if (QChar(c).isLowSurrogate() && ch > start && QChar(*(ch - 1)).isHighSurrogate())
|
|
|
1167 |
c = QChar::surrogateToUcs4(*(ch - 1), c);
|
|
|
1168 |
return *ch + qGetProp(c)->caseFoldDiff;
|
|
|
1169 |
}
|
|
|
1170 |
|
|
|
1171 |
static inline uint foldCase(uint ch, uint &last)
|
|
|
1172 |
{
|
|
|
1173 |
uint c = ch;
|
|
|
1174 |
if (QChar(c).isLowSurrogate() && QChar(last).isHighSurrogate())
|
|
|
1175 |
c = QChar::surrogateToUcs4(last, c);
|
|
|
1176 |
last = ch;
|
|
|
1177 |
return ch + qGetProp(c)->caseFoldDiff;
|
|
|
1178 |
}
|
|
|
1179 |
|
|
|
1180 |
static inline ushort foldCase(ushort ch)
|
|
|
1181 |
{
|
|
|
1182 |
return ch + qGetProp(ch)->caseFoldDiff;
|
|
|
1183 |
}
|
|
|
1184 |
|
|
|
1185 |
/*!
|
|
|
1186 |
Returns the case folded equivalent of the character. For most Unicode characters this
|
|
|
1187 |
is the same as toLowerCase().
|
|
|
1188 |
*/
|
|
|
1189 |
QChar QChar::toCaseFolded() const
|
|
|
1190 |
{
|
|
|
1191 |
return ucs + qGetProp(ucs)->caseFoldDiff;
|
|
|
1192 |
}
|
|
|
1193 |
|
|
|
1194 |
/*!
|
|
|
1195 |
\overload
|
|
|
1196 |
Returns the case folded equivalent of the UCS-4-encoded character specified
|
|
|
1197 |
by \a ucs4. For most Unicode characters this is the same as toLowerCase().
|
|
|
1198 |
*/
|
|
|
1199 |
uint QChar::toCaseFolded(uint ucs4)
|
|
|
1200 |
{
|
|
|
1201 |
if (ucs4 > LAST_UNICODE_CHAR)
|
|
|
1202 |
return ucs4;
|
|
|
1203 |
return ucs4 + qGetProp(ucs4)->caseFoldDiff;
|
|
|
1204 |
}
|
|
|
1205 |
|
|
|
1206 |
/*!
|
|
|
1207 |
\overload
|
|
|
1208 |
Returns the case folded equivalent of the UCS-2-encoded character specified
|
|
|
1209 |
by \a ucs2. For most Unicode characters this is the same as toLowerCase().
|
|
|
1210 |
*/
|
|
|
1211 |
ushort QChar::toCaseFolded(ushort ucs2)
|
|
|
1212 |
{
|
|
|
1213 |
return ucs2 + qGetProp(ucs2)->caseFoldDiff;
|
|
|
1214 |
}
|
|
|
1215 |
|
|
|
1216 |
|
|
|
1217 |
/*!
|
|
|
1218 |
\fn char QChar::latin1() const
|
|
|
1219 |
|
|
|
1220 |
Use toLatin1() instead.
|
|
|
1221 |
*/
|
|
|
1222 |
|
|
|
1223 |
/*!
|
|
|
1224 |
\fn char QChar::ascii() const
|
|
|
1225 |
|
|
|
1226 |
Use toAscii() instead.
|
|
|
1227 |
*/
|
|
|
1228 |
|
|
|
1229 |
/*!
|
|
|
1230 |
\fn char QChar::toLatin1() const
|
|
|
1231 |
|
|
|
1232 |
Returns the Latin-1 character equivalent to the QChar, or 0. This
|
|
|
1233 |
is mainly useful for non-internationalized software.
|
|
|
1234 |
|
|
|
1235 |
\sa toAscii(), unicode(), QTextCodec::codecForCStrings()
|
|
|
1236 |
*/
|
|
|
1237 |
|
|
|
1238 |
/*!
|
|
|
1239 |
\fn char QChar::toAscii() const
|
|
|
1240 |
Returns the character value of the QChar obtained using the current
|
|
|
1241 |
codec used to read C strings, or 0 if the character is not representable
|
|
|
1242 |
using this codec. The default codec handles Latin-1 encoded text,
|
|
|
1243 |
but this can be changed to assist developers writing source code using
|
|
|
1244 |
other encodings.
|
|
|
1245 |
|
|
|
1246 |
The main purpose of this function is to preserve ASCII characters used
|
|
|
1247 |
in C strings. This is mainly useful for developers of non-internationalized
|
|
|
1248 |
software.
|
|
|
1249 |
|
|
|
1250 |
\sa toLatin1(), unicode(), QTextCodec::codecForCStrings()
|
|
|
1251 |
*/
|
|
|
1252 |
#ifdef Q_COMPILER_MANGLES_RETURN_TYPE
|
|
|
1253 |
const char QChar::toAscii() const
|
|
|
1254 |
#else
|
|
|
1255 |
char QChar::toAscii() const
|
|
|
1256 |
#endif
|
|
|
1257 |
{
|
|
|
1258 |
#ifndef QT_NO_CODEC_FOR_C_STRINGS
|
|
|
1259 |
if (QTextCodec::codecForCStrings())
|
|
|
1260 |
// #####
|
|
|
1261 |
return QTextCodec::codecForCStrings()->fromUnicode(QString(*this)).at(0);
|
|
|
1262 |
#endif
|
|
|
1263 |
return ucs > 0xff ? 0 : char(ucs);
|
|
|
1264 |
}
|
|
|
1265 |
|
|
|
1266 |
/*!
|
|
|
1267 |
\fn QChar QChar::fromLatin1(char c)
|
|
|
1268 |
|
|
|
1269 |
Converts the Latin-1 character \a c to its equivalent QChar. This
|
|
|
1270 |
is mainly useful for non-internationalized software.
|
|
|
1271 |
|
|
|
1272 |
\sa fromAscii(), unicode(), QTextCodec::codecForCStrings()
|
|
|
1273 |
*/
|
|
|
1274 |
|
|
|
1275 |
/*!
|
|
|
1276 |
Converts the ASCII character \a c to its equivalent QChar. This
|
|
|
1277 |
is mainly useful for non-internationalized software.
|
|
|
1278 |
|
|
|
1279 |
An alternative is to use QLatin1Char.
|
|
|
1280 |
|
|
|
1281 |
\sa fromLatin1(), unicode(), QTextCodec::codecForCStrings()
|
|
|
1282 |
*/
|
|
|
1283 |
QChar QChar::fromAscii(char c)
|
|
|
1284 |
{
|
|
|
1285 |
#ifndef QT_NO_CODEC_FOR_C_STRINGS
|
|
|
1286 |
if (QTextCodec::codecForCStrings())
|
|
|
1287 |
// #####
|
|
|
1288 |
return QTextCodec::codecForCStrings()->toUnicode(&c, 1).at(0).unicode();
|
|
|
1289 |
#endif
|
|
|
1290 |
return QChar(ushort((uchar)c));
|
|
|
1291 |
}
|
|
|
1292 |
|
|
|
1293 |
#ifndef QT_NO_DATASTREAM
|
|
|
1294 |
/*!
|
|
|
1295 |
\relates QChar
|
|
|
1296 |
|
|
|
1297 |
Writes the char \a chr to the stream \a out.
|
|
|
1298 |
|
|
|
1299 |
\sa {Format of the QDataStream operators}
|
|
|
1300 |
*/
|
|
|
1301 |
|
|
|
1302 |
QDataStream &operator<<(QDataStream &out, const QChar &chr)
|
|
|
1303 |
{
|
|
|
1304 |
out << quint16(chr.unicode());
|
|
|
1305 |
return out;
|
|
|
1306 |
}
|
|
|
1307 |
|
|
|
1308 |
|
|
|
1309 |
/*!
|
|
|
1310 |
\relates QChar
|
|
|
1311 |
|
|
|
1312 |
Reads a char from the stream \a in into char \a chr.
|
|
|
1313 |
|
|
|
1314 |
\sa {Format of the QDataStream operators}
|
|
|
1315 |
*/
|
|
|
1316 |
|
|
|
1317 |
QDataStream &operator>>(QDataStream &in, QChar &chr)
|
|
|
1318 |
{
|
|
|
1319 |
quint16 u;
|
|
|
1320 |
in >> u;
|
|
|
1321 |
chr.unicode() = ushort(u);
|
|
|
1322 |
return in;
|
|
|
1323 |
}
|
|
|
1324 |
#endif // QT_NO_DATASTREAM
|
|
|
1325 |
|
|
|
1326 |
/*!
|
|
|
1327 |
\fn ushort & QChar::unicode()
|
|
|
1328 |
|
|
|
1329 |
Returns a reference to the numeric Unicode value of the QChar.
|
|
|
1330 |
*/
|
|
|
1331 |
|
|
|
1332 |
/*!
|
|
|
1333 |
\fn ushort QChar::unicode() const
|
|
|
1334 |
|
|
|
1335 |
\overload
|
|
|
1336 |
*/
|
|
|
1337 |
|
|
|
1338 |
/*****************************************************************************
|
|
|
1339 |
Documentation of QChar related functions
|
|
|
1340 |
*****************************************************************************/
|
|
|
1341 |
|
|
|
1342 |
/*!
|
|
|
1343 |
\fn bool operator==(QChar c1, QChar c2)
|
|
|
1344 |
|
|
|
1345 |
\relates QChar
|
|
|
1346 |
|
|
|
1347 |
Returns true if \a c1 and \a c2 are the same Unicode character;
|
|
|
1348 |
otherwise returns false.
|
|
|
1349 |
*/
|
|
|
1350 |
|
|
|
1351 |
/*!
|
|
|
1352 |
\fn int operator!=(QChar c1, QChar c2)
|
|
|
1353 |
|
|
|
1354 |
\relates QChar
|
|
|
1355 |
|
|
|
1356 |
Returns true if \a c1 and \a c2 are not the same Unicode
|
|
|
1357 |
character; otherwise returns false.
|
|
|
1358 |
*/
|
|
|
1359 |
|
|
|
1360 |
/*!
|
|
|
1361 |
\fn int operator<=(QChar c1, QChar c2)
|
|
|
1362 |
|
|
|
1363 |
\relates QChar
|
|
|
1364 |
|
|
|
1365 |
Returns true if the numeric Unicode value of \a c1 is less than
|
|
|
1366 |
or equal to that of \a c2; otherwise returns false.
|
|
|
1367 |
*/
|
|
|
1368 |
|
|
|
1369 |
/*!
|
|
|
1370 |
\fn int operator>=(QChar c1, QChar c2)
|
|
|
1371 |
|
|
|
1372 |
\relates QChar
|
|
|
1373 |
|
|
|
1374 |
Returns true if the numeric Unicode value of \a c1 is greater than
|
|
|
1375 |
or equal to that of \a c2; otherwise returns false.
|
|
|
1376 |
*/
|
|
|
1377 |
|
|
|
1378 |
/*!
|
|
|
1379 |
\fn int operator<(QChar c1, QChar c2)
|
|
|
1380 |
|
|
|
1381 |
\relates QChar
|
|
|
1382 |
|
|
|
1383 |
Returns true if the numeric Unicode value of \a c1 is less than
|
|
|
1384 |
that of \a c2; otherwise returns false.
|
|
|
1385 |
*/
|
|
|
1386 |
|
|
|
1387 |
/*!
|
|
|
1388 |
\fn int operator>(QChar c1, QChar c2)
|
|
|
1389 |
|
|
|
1390 |
\relates QChar
|
|
|
1391 |
|
|
|
1392 |
Returns true if the numeric Unicode value of \a c1 is greater than
|
|
|
1393 |
that of \a c2; otherwise returns false.
|
|
|
1394 |
*/
|
|
|
1395 |
|
|
|
1396 |
/*!
|
|
|
1397 |
\fn bool QChar::mirrored() const
|
|
|
1398 |
|
|
|
1399 |
Use hasMirrored() instead.
|
|
|
1400 |
*/
|
|
|
1401 |
|
|
|
1402 |
/*!
|
|
|
1403 |
\fn QChar QChar::lower() const
|
|
|
1404 |
|
|
|
1405 |
Use toLower() instead.
|
|
|
1406 |
*/
|
|
|
1407 |
|
|
|
1408 |
/*!
|
|
|
1409 |
\fn QChar QChar::upper() const
|
|
|
1410 |
|
|
|
1411 |
Use toUpper() instead.
|
|
|
1412 |
*/
|
|
|
1413 |
|
|
|
1414 |
/*!
|
|
|
1415 |
\fn bool QChar::networkOrdered()
|
|
|
1416 |
|
|
|
1417 |
See if QSysInfo::ByteOrder == QSysInfo::BigEndian instead.
|
|
|
1418 |
*/
|
|
|
1419 |
|
|
|
1420 |
|
|
|
1421 |
// ---------------------------------------------------------------------------
|
|
|
1422 |
|
|
|
1423 |
|
|
|
1424 |
static void decomposeHelper(QString *str, bool canonical, QChar::UnicodeVersion version, int from)
|
|
|
1425 |
{
|
|
|
1426 |
unsigned short buffer[3];
|
|
|
1427 |
|
|
|
1428 |
QString &s = *str;
|
|
|
1429 |
|
|
|
1430 |
const unsigned short *utf16 = reinterpret_cast<unsigned short *>(s.data());
|
|
|
1431 |
const unsigned short *uc = utf16 + s.length();
|
|
|
1432 |
while (uc != utf16 + from) {
|
|
|
1433 |
uint ucs4 = *(--uc);
|
|
|
1434 |
if (QChar(ucs4).isLowSurrogate() && uc != utf16) {
|
|
|
1435 |
ushort high = *(uc - 1);
|
|
|
1436 |
if (QChar(high).isHighSurrogate()) {
|
|
|
1437 |
--uc;
|
|
|
1438 |
ucs4 = QChar::surrogateToUcs4(high, ucs4);
|
|
|
1439 |
}
|
|
|
1440 |
}
|
|
|
1441 |
if (QChar::unicodeVersion(ucs4) > version)
|
|
|
1442 |
continue;
|
|
|
1443 |
int length;
|
|
|
1444 |
int tag;
|
|
|
1445 |
const unsigned short *d = decompositionHelper(ucs4, &length, &tag, buffer);
|
|
|
1446 |
if (!d || (canonical && tag != QChar::Canonical))
|
|
|
1447 |
continue;
|
|
|
1448 |
|
|
|
1449 |
s.replace(uc - utf16, ucs4 > 0x10000 ? 2 : 1, (const QChar *)d, length);
|
|
|
1450 |
// since the insert invalidates the pointers and we do decomposition recursive
|
|
|
1451 |
int pos = uc - utf16;
|
|
|
1452 |
utf16 = reinterpret_cast<unsigned short *>(s.data());
|
|
|
1453 |
uc = utf16 + pos + length;
|
|
|
1454 |
}
|
|
|
1455 |
}
|
|
|
1456 |
|
|
|
1457 |
|
|
|
1458 |
static ushort ligatureHelper(ushort u1, ushort u2)
|
|
|
1459 |
{
|
|
|
1460 |
// hangul L-V pair
|
|
|
1461 |
int LIndex = u1 - Hangul_LBase;
|
|
|
1462 |
if (0 <= LIndex && LIndex < Hangul_LCount) {
|
|
|
1463 |
int VIndex = u2 - Hangul_VBase;
|
|
|
1464 |
if (0 <= VIndex && VIndex < Hangul_VCount)
|
|
|
1465 |
return Hangul_SBase + (LIndex * Hangul_VCount + VIndex) * Hangul_TCount;
|
|
|
1466 |
}
|
|
|
1467 |
|
|
|
1468 |
// hangul LV-T pair
|
|
|
1469 |
int SIndex = u1 - Hangul_SBase;
|
|
|
1470 |
if (0 <= SIndex && SIndex < Hangul_SCount && (SIndex % Hangul_TCount) == 0) {
|
|
|
1471 |
int TIndex = u2 - Hangul_TBase;
|
|
|
1472 |
if (0 <= TIndex && TIndex <= Hangul_TCount)
|
|
|
1473 |
return u1 + TIndex;
|
|
|
1474 |
}
|
|
|
1475 |
|
|
|
1476 |
const unsigned short index = GET_LIGATURE_INDEX(u2);
|
|
|
1477 |
if (index == 0xffff)
|
|
|
1478 |
return 0;
|
|
|
1479 |
const unsigned short *ligatures = uc_ligature_map+index;
|
|
|
1480 |
ushort length = *ligatures;
|
|
|
1481 |
++ligatures;
|
|
|
1482 |
// ### use bsearch
|
|
|
1483 |
for (uint i = 0; i < length; ++i)
|
|
|
1484 |
if (ligatures[2*i] == u1)
|
|
|
1485 |
return ligatures[2*i+1];
|
|
|
1486 |
return 0;
|
|
|
1487 |
}
|
|
|
1488 |
|
|
|
1489 |
static void composeHelper(QString *str, int from)
|
|
|
1490 |
{
|
|
|
1491 |
QString &s = *str;
|
|
|
1492 |
|
|
|
1493 |
if (s.length() - from < 2)
|
|
|
1494 |
return;
|
|
|
1495 |
|
|
|
1496 |
// the loop can partly ignore high Unicode as all ligatures are in the BMP
|
|
|
1497 |
int starter = 0;
|
|
|
1498 |
int lastCombining = 0;
|
|
|
1499 |
int pos = from;
|
|
|
1500 |
while (pos < s.length()) {
|
|
|
1501 |
uint uc = s.at(pos).unicode();
|
|
|
1502 |
if (QChar(uc).isHighSurrogate() && pos < s.length()-1) {
|
|
|
1503 |
ushort low = s.at(pos+1).unicode();
|
|
|
1504 |
if (QChar(low).isLowSurrogate()) {
|
|
|
1505 |
uc = QChar::surrogateToUcs4(uc, low);
|
|
|
1506 |
++pos;
|
|
|
1507 |
}
|
|
|
1508 |
}
|
|
|
1509 |
int combining = QChar::combiningClass(uc);
|
|
|
1510 |
if (starter == pos - 1 || combining > lastCombining) {
|
|
|
1511 |
// allowed to form ligature with S
|
|
|
1512 |
QChar ligature = ligatureHelper(s.at(starter).unicode(), uc);
|
|
|
1513 |
if (ligature.unicode()) {
|
|
|
1514 |
s[starter] = ligature;
|
|
|
1515 |
s.remove(pos, 1);
|
|
|
1516 |
continue;
|
|
|
1517 |
}
|
|
|
1518 |
}
|
|
|
1519 |
if (!combining)
|
|
|
1520 |
starter = pos;
|
|
|
1521 |
lastCombining = combining;
|
|
|
1522 |
++pos;
|
|
|
1523 |
}
|
|
|
1524 |
}
|
|
|
1525 |
|
|
|
1526 |
|
|
|
1527 |
static void canonicalOrderHelper(QString *str, QChar::UnicodeVersion version, int from)
|
|
|
1528 |
{
|
|
|
1529 |
QString &s = *str;
|
|
|
1530 |
const int l = s.length()-1;
|
|
|
1531 |
int pos = from;
|
|
|
1532 |
while (pos < l) {
|
|
|
1533 |
int p2 = pos+1;
|
|
|
1534 |
uint u1 = s.at(pos).unicode();
|
|
|
1535 |
if (QChar(u1).isHighSurrogate()) {
|
|
|
1536 |
ushort low = s.at(pos+1).unicode();
|
|
|
1537 |
if (QChar(low).isLowSurrogate()) {
|
|
|
1538 |
p2++;
|
|
|
1539 |
u1 = QChar::surrogateToUcs4(u1, low);
|
|
|
1540 |
if (p2 >= l)
|
|
|
1541 |
break;
|
|
|
1542 |
}
|
|
|
1543 |
}
|
|
|
1544 |
uint u2 = s.at(p2).unicode();
|
|
|
1545 |
if (QChar(u2).isHighSurrogate() && p2 < l-1) {
|
|
|
1546 |
ushort low = s.at(p2+1).unicode();
|
|
|
1547 |
if (QChar(low).isLowSurrogate()) {
|
|
|
1548 |
p2++;
|
|
|
1549 |
u2 = QChar::surrogateToUcs4(u2, low);
|
|
|
1550 |
}
|
|
|
1551 |
}
|
|
|
1552 |
|
|
|
1553 |
int c2 = QChar::combiningClass(u2);
|
|
|
1554 |
if (QChar::unicodeVersion(u2) > version)
|
|
|
1555 |
c2 = 0;
|
|
|
1556 |
|
|
|
1557 |
if (c2 == 0) {
|
|
|
1558 |
pos = p2+1;
|
|
|
1559 |
continue;
|
|
|
1560 |
}
|
|
|
1561 |
int c1 = QChar::combiningClass(u1);
|
|
|
1562 |
if (QChar::unicodeVersion(u1) > version)
|
|
|
1563 |
c1 = 0;
|
|
|
1564 |
|
|
|
1565 |
if (c1 > c2) {
|
|
|
1566 |
QChar *uc = s.data();
|
|
|
1567 |
int p = pos;
|
|
|
1568 |
// exchange characters
|
|
|
1569 |
if (u2 < 0x10000) {
|
|
|
1570 |
uc[p++] = u2;
|
|
|
1571 |
} else {
|
|
|
1572 |
uc[p++] = QChar::highSurrogate(u2);
|
|
|
1573 |
uc[p++] = QChar::lowSurrogate(u2);
|
|
|
1574 |
}
|
|
|
1575 |
if (u1 < 0x10000) {
|
|
|
1576 |
uc[p++] = u1;
|
|
|
1577 |
} else {
|
|
|
1578 |
uc[p++] = QChar::highSurrogate(u1);
|
|
|
1579 |
uc[p++] = QChar::lowSurrogate(u1);
|
|
|
1580 |
}
|
|
|
1581 |
if (pos > 0)
|
|
|
1582 |
--pos;
|
|
|
1583 |
if (pos > 0 && s.at(pos).isLowSurrogate())
|
|
|
1584 |
--pos;
|
|
|
1585 |
} else {
|
|
|
1586 |
++pos;
|
|
|
1587 |
if (u1 > 0x10000)
|
|
|
1588 |
++pos;
|
|
|
1589 |
}
|
|
|
1590 |
}
|
|
|
1591 |
}
|
|
|
1592 |
|
|
|
1593 |
int QT_FASTCALL QUnicodeTables::script(unsigned int uc)
|
|
|
1594 |
{
|
|
|
1595 |
if (uc > 0xffff)
|
|
|
1596 |
return Common;
|
|
|
1597 |
int script = uc_scripts[uc >> 7];
|
|
|
1598 |
if (script < ScriptSentinel)
|
|
|
1599 |
return script;
|
|
|
1600 |
script = (((script - ScriptSentinel) * UnicodeBlockSize) + UnicodeBlockCount);
|
|
|
1601 |
script = uc_scripts[script + (uc & 0x7f)];
|
|
|
1602 |
return script;
|
|
|
1603 |
}
|
|
|
1604 |
|
|
|
1605 |
|
|
|
1606 |
Q_CORE_EXPORT QUnicodeTables::LineBreakClass QT_FASTCALL QUnicodeTables::lineBreakClass(uint ucs4)
|
|
|
1607 |
{
|
|
|
1608 |
return (QUnicodeTables::LineBreakClass) qGetProp(ucs4)->line_break_class;
|
|
|
1609 |
}
|
|
|
1610 |
|
|
|
1611 |
|
|
|
1612 |
QT_END_NAMESPACE
|