| -rw-r--r-- | qmake/tools/qstring.cpp | 434 |
1 files changed, 290 insertions, 144 deletions
diff --git a/qmake/tools/qstring.cpp b/qmake/tools/qstring.cpp index 56df62b..7f1fac3 100644 --- a/qmake/tools/qstring.cpp +++ b/qmake/tools/qstring.cpp @@ -1,157 +1,161 @@ /**************************************************************************** ** $Id$ ** ** Implementation of the QString class and related Unicode functions ** ** Created : 920722 ** -** Copyright (C) 1992-2000 Trolltech AS. All rights reserved. +** Copyright (C) 1992-2002 Trolltech AS. All rights reserved. ** ** This file is part of the tools module of the Qt GUI Toolkit. ** ** This file may be distributed under the terms of the Q Public License ** as defined by Trolltech AS of Norway and appearing in the file ** LICENSE.QPL included in the packaging of this file. ** ** This file may be distributed and/or modified under the terms of the ** GNU General Public License version 2 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. ** ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition ** licenses may use this file in accordance with the Qt Commercial License ** Agreement provided with the Software. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for ** information about Qt Commercial License Agreements. ** See http://www.trolltech.com/qpl/ for QPL licensing information. ** See http://www.trolltech.com/gpl/ for GPL licensing information. ** ** Contact info@trolltech.com if any conditions of this licensing are ** not clear to you. ** **********************************************************************/ // Don't define it while compiling this module, or USERS of Qt will // not be able to link. #ifdef QT_NO_CAST_ASCII #undef QT_NO_CAST_ASCII #endif #include "qstring.h" #include "qregexp.h" #include "qdatastream.h" #ifndef QT_NO_TEXTCODEC #include "qtextcodec.h" #endif -#include <ctype.h> #include <limits.h> #include <stdarg.h> #include <stdio.h> #include <stdlib.h> +#include <string.h> #if defined(Q_WS_WIN) #include "qt_windows.h" #endif #if !defined( QT_NO_COMPONENT ) && !defined( QT_LITE_COMPONENT ) #include "qcleanuphandler.h" #endif +#ifdef QT_NO_UNICODETABLES +# include <ctype.h> +#endif + /* ------------------------------------------------------------------------- * unicode information * these tables are generated from the unicode reference file * ftp://ftp.unicode.org/Public/3.2-Update/UnicodeData.txt * * Lars * ------------------------------------------------------------------------- */ /* Perl script to generate (run perl -x tools/qstring.cpp) #!perl sub numberize { my(%r, $n, $id); for $id ( @_ ) { $i = $id; $i="" if $i eq "EMPTY"; $r{$i}=$n++; } return %r; } sub readUnicodeDataLine { $code = shift @_; for $n (qw{ name category combining_class bidi_category character_decomposition decimal_digit_value digit_value numeric_value mirrored oldname comment uppercase lowercase titlecase}) { $id = shift @_; $codes = "${n}_code"; if ( defined %$codes && defined $$codes{$id} ) { $id = $$codes{$id}; } ${$n}{$code}=$id; } $decomp = $character_decomposition{$code}; if ( length $decomp == 0 ) { $decomp = "<single>"; } if (substr($decomp, 0, 1) ne '<') { $decomp = "<canonical> " . $decomp; } @_ = split(" ", $decomp); $tag = shift @_; $tag = $character_decomposition_tag{$tag}; $decomp = join( ", 0x", @_ ); $decomp = "0x".$decomp; $decomposition{$code} = $decomp; $decomposition_tag{$code} = $tag; $decomposition_pos{$code} = $position; $len = scalar(@_); $decomposition_len{$code} = $len; # we use canonical decompositions longer than 1 char # we exlude Arabic ligatures from the table if($len > 1 and $tag == 1) { # ligature to add... $start = shift @_; $ligature{$start} = $ligature{$start}." ".$code; } # adjust position if($len != 0) { $position += $len + 3; } } # Code to integer mappings... # %category_code = numberize(qw{ EMPTY Mn Mc Me Nd Nl No Zs Zl Zp Cc Cf Cs Co Cn Lu Ll Lt Lm Lo Pc Pd Ps Pe Pi Pf Po Sm Sc Sk So }); %bidi_category_code = numberize(qw{ L R EN ES ET AN CS B S WS ON LRE LRO AL RLE RLO PDF NSM BN}); %character_decomposition_tag = numberize(qw{ <single> <canonical> <font> <noBreak> <initial> <medial> <final> <isolated> <circle> <super> <sub> <vertical> <wide> <narrow> <small> <square> <compat> <fraction> }); %mirrored_code = numberize(qw{N Y}); @@ -11694,306 +11698,308 @@ static const Q_INT8 * const decimal_info[256] = { 0, num_09, num_09, num_0B, num_09, num_0D, num_0E, num_0F, num_10, 0, 0, num_13, 0, 0, 0, num_17, num_18, 0, 0, 0, 0, 0, 0, 0, num_20, 0, 0, 0, num_24, 0, 0, num_27, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, num_18, }; // 47354 bytes // END OF GENERATED DATA #endif static inline QChar::Category category( const QChar &c ) { #ifndef QT_NO_UNICODETABLES return (QChar::Category)(unicode_info[c.row()][c.cell()]); #else // ### just ASCII if ( c.unicode() < 0x100 ) { return (QChar::Category)(ui_00[c.unicode()]); } return QChar::Letter_Uppercase; //####### #endif } static inline QChar lower( const QChar &c ) { #ifndef QT_NO_UNICODETABLES uchar row = c.row(); uchar cell = c.cell(); if ( unicode_info[row][cell] != QChar::Letter_Uppercase ) return c; Q_UINT16 lower = *( case_info[row] + cell ); if ( lower == 0 ) return c; return lower; #else if ( c.row() ) return c; else return QChar( tolower((uchar) c.latin1()) ); #endif } static inline QChar upper( const QChar &c ) { #ifndef QT_NO_UNICODETABLES uchar row = c.row(); uchar cell = c.cell(); if ( unicode_info[row][cell] != QChar::Letter_Lowercase ) return c; Q_UINT16 upper = *(case_info[row]+cell); if ( upper == 0 ) return c; return upper; #else if ( c.row() ) return c; else return QChar( toupper((uchar) c.latin1()) ); #endif } static inline QChar::Direction direction( const QChar &c ) { #ifndef QT_NO_UNICODETABLES const Q_UINT8 *rowp = direction_info[c.row()]; if(!rowp) return QChar::DirL; return (QChar::Direction) ( *(rowp+c.cell()) & 0x1f ); #else + Q_UNUSED(c); return QChar::DirL; #endif } static inline bool mirrored( const QChar &c ) { #ifndef QT_NO_UNICODETABLES const Q_UINT8 *rowp = direction_info[c.row()]; if ( !rowp ) return FALSE; return *(rowp+c.cell())>128; #else + Q_UNUSED(c); return FALSE; #endif } #ifndef QT_NO_UNICODETABLES static const Q_UINT16 symmetricPairs[] = { 0x0028, 0x0029, 0x003C, 0x003E, 0x005B, 0x005D, 0x007B, 0x007D, 0x00AB, 0x00BB, 0x2039, 0x203A, 0x2045, 0x2046, 0x207D, 0x207E, 0x208D, 0x208E, 0x2208, 0x220B, 0x2209, 0x220C, 0x220A, 0x220D, 0x2215, 0x29F5, 0x223C, 0x223D, 0x2243, 0x22CD, 0x2252, 0x2253, 0x2254, 0x2255, 0x2264, 0x2265, 0x2266, 0x2267, 0x2268, 0x2269, 0x226A, 0x226B, 0x226E, 0x226F, 0x2270, 0x2271, 0x2272, 0x2273, 0x2274, 0x2275, 0x2276, 0x2277, 0x2278, 0x2279, 0x227A, 0x227B, 0x227C, 0x227D, 0x227E, 0x227F, 0x2280, 0x2281, 0x2282, 0x2283, 0x2284, 0x2285, 0x2286, 0x2287, 0x2288, 0x2289, 0x228A, 0x228B, 0x228F, 0x2290, 0x2291, 0x2292, 0x2298, 0x29B8, 0x22A2, 0x22A3, 0x22A6, 0x2ADE, 0x22A8, 0x2AE4, 0x22A9, 0x2AE3, 0x22AB, 0x2AE5, 0x22B0, 0x22B1, 0x22B2, 0x22B3, 0x22B4, 0x22B5, 0x22B6, 0x22B7, 0x22C9, 0x22CA, 0x22CB, 0x22CC, 0x22D0, 0x22D1, 0x22D6, 0x22D7, 0x22D8, 0x22D9, 0x22DA, 0x22DB, 0x22DC, 0x22DD, 0x22DE, 0x22DF, 0x22E0, 0x22E1, 0x22E2, 0x22E3, 0x22E4, 0x22E5, 0x22E6, 0x22E7, 0x22E8, 0x22E9, 0x22EA, 0x22EB, 0x22EC, 0x22ED, 0x22F0, 0x22F1, 0x22F2, 0x22FA, 0x22F3, 0x22FB, 0x22F4, 0x22FC, 0x22F6, 0x22FD, 0x22F7, 0x22FE, 0x2308, 0x2309, 0x230A, 0x230B, 0x2329, 0x232A, 0x2768, 0x2769, 0x276A, 0x276B, 0x276C, 0x276D, 0x276E, 0x276F, 0x2770, 0x2771, 0x2772, 0x2773, 0x2774, 0x2775, 0x27D5, 0x27D6, 0x27DD, 0x27DE, 0x27E2, 0x27E3, 0x27E4, 0x27E5, 0x27E6, 0x27E7, 0x27E8, 0x27E9, 0x27EA, 0x27EB, 0x2983, 0x2984, 0x2985, 0x2986, 0x2987, 0x2988, 0x2989, 0x298A, 0x298B, 0x298C, 0x298D, 0x2990, 0x298E, 0x298F, 0x2991, 0x2992, 0x2993, 0x2994, 0x2995, 0x2996, 0x2997, 0x2998, 0x29C0, 0x29C1, 0x29C4, 0x29C5, 0x29CF, 0x29D0, 0x29D1, 0x29D2, 0x29D4, 0x29D5, 0x29D8, 0x29D9, 0x29DA, 0x29DB, 0x29F8, 0x29F9, 0x29FC, 0x29FD, 0x2A2B, 0x2A2C, 0x2A34, 0x2A35, 0x2A3C, 0x2A3D, 0x2A64, 0x2A65, 0x2A79, 0x2A7A, 0x2A7D, 0x2A7E, 0x2A7F, 0x2A80, 0x2A81, 0x2A82, 0x2A83, 0x2A84, 0x2A8B, 0x2A8C, 0x2A91, 0x2A92, 0x2A93, 0x2A94, 0x2A95, 0x2A96, 0x2A97, 0x2A98, 0x2A99, 0x2A9A, 0x2A9B, 0x2A9C, 0x2AA1, 0x2AA2, 0x2AA6, 0x2AA7, 0x2AA8, 0x2AA9, 0x2AAA, 0x2AAB, 0x2AAC, 0x2AAD, 0x2AAF, 0x2AB0, 0x2AB3, 0x2AB4, 0x2ABB, 0x2ABC, 0x2ABD, 0x2ABE, 0x2ABF, 0x2AC0, 0x2AC1, 0x2AC2, 0x2AC3, 0x2AC4, 0x2AC5, 0x2AC6, 0x2ACD, 0x2ACE, 0x2ACF, 0x2AD0, 0x2AD1, 0x2AD2, 0x2AD3, 0x2AD4, 0x2AD5, 0x2AD6, 0x2AEC, 0x2AED, 0x2AF7, 0x2AF8, 0x2AF9, 0x2AFA, 0x3008, 0x3009, 0x300A, 0x300B, 0x300C, 0x300D, 0x300E, 0x300F, 0x3010, 0x3011, 0x3014, 0x3015, 0x3016, 0x3017, 0x3018, 0x3019, 0x301A, 0x301B, 0xFF08, 0xFF09, 0xFF1C, 0xFF1E, 0xFF3B, 0xFF3D, 0xFF5B, 0xFF5D, 0xFF5F, 0xFF60, 0xFF62, 0xFF63, }; // ### shouldn't this be const? static const int symmetricPairsSize = sizeof(symmetricPairs)/sizeof(symmetricPairs[0]); /* * ---------------------------------------------------------------------- * End of unicode tables * ---------------------------------------------------------------------- */ #endif static int ucstrcmp( const QString &as, const QString &bs ) { const QChar *a = as.unicode(); const QChar *b = bs.unicode(); if ( a == b ) return 0; if ( a == 0 ) return 1; if ( b == 0 ) return -1; int l=QMIN(as.length(),bs.length()); while ( l-- && *a == *b ) a++,b++; if ( l==-1 ) return ( as.length()-bs.length() ); return a->unicode() - b->unicode(); } static int ucstrncmp( const QChar *a, const QChar *b, int l ) { while ( l-- && *a == *b ) a++,b++; if ( l==-1 ) return 0; return a->unicode() - b->unicode(); } static int ucstrnicmp( const QChar *a, const QChar *b, int l ) { while ( l-- && ::lower( *a ) == ::lower( *b ) ) a++,b++; if ( l==-1 ) return 0; return ::lower( *a ).unicode() - ::lower( *b ).unicode(); } static uint computeNewMax( uint len ) { uint newMax = 4; while ( newMax < len ) newMax *= 2; - // try to spare some memory + // try to save some memory if ( newMax >= 1024 * 1024 && len <= newMax - (newMax >> 2) ) newMax -= newMax >> 2; return newMax; } /*! \class QCharRef qstring.h \reentrant \brief The QCharRef class is a helper class for QString. \ingroup text When you get an object of type QCharRef, if you can assign to it, the assignment will apply to the character in the string from which you got the reference. That is its whole purpose in life. The QCharRef becomes invalid once modifications are made to the string: if you want to keep the character, copy it into a QChar. Most of the QChar member functions also exist in QCharRef. However, they are not explicitly documented here. \sa QString::operator[]() QString::at() QChar */ /*! \class QChar qstring.h \reentrant \brief The QChar class provides a lightweight Unicode character. \ingroup text Unicode characters are (so far) 16-bit entities without any markup or structure. This class represents such an entity. It is lightweight, so it can be used everywhere. Most compilers treat it like a "short int". (In a few years it may be necessary to make QChar 32-bit when more than 65536 Unicode code points have been defined and come into use.) QChar provides a full complement of testing/classification functions, converting to and from other formats, converting from composed to decomposed Unicode, and trying to compare and case-convert if you ask it to. The classification functions include functions like those in ctype.h, but operating on the full range of Unicode characters. They all return TRUE if the character is a certain type of character; otherwise they return FALSE. These classification functions are isNull() (returns TRUE if the character is U+0000), isPrint() (TRUE if the character is any sort of printable character, including whitespace), isPunct() (any sort of punctation), isMark() (Unicode Mark), isLetter (a letter), isNumber() (any sort of numeric character), isLetterOrNumber(), and isDigit() (decimal digits). All of these are wrappers around category() which return the Unicode-defined category of each character. QChar further provides direction(), which indicates the "natural" writing direction of this character. The joining() function indicates how the character joins with its neighbors (needed mostly for Arabic) and finally mirrored(), which indicates whether the character needs to be mirrored when it is printed in its "unnatural" writing direction. Composed Unicode characters (like å) can be converted to decomposed Unicode ("a" followed by "ring above") by using decomposition(). In Unicode, comparison is not necessarily possible and case conversion is very difficult at best. Unicode, covering the "entire" world, also includes most of the world's case and sorting problems. Qt tries, but not very hard: operator==() and friends will do comparison based purely on the numeric Unicode value (code point) of the characters, and upper() and lower() will do case changes when the character has a well-defined upper/lower-case equivalent. There is no provision for locale-dependent case folding rules or comparison; these functions are meant to be fast so they can be used unambiguously in data structures. (See QString::localeAwareCompare() though.) The conversion functions include unicode() (to a scalar), latin1() (to scalar, but converts all non-Latin1 characters to 0), row() (gives the Unicode row), cell() (gives the Unicode cell), digitValue() (gives the integer value of any of the numerous digit characters), and a host of constructors. More information can be found in the document \link unicode.html About Unicode. \endlink \sa QString QCharRef */ /*! \enum QChar::Category This enum maps the Unicode character categories. @@ -12798,846 +12804,850 @@ static inline bool format(QChar::Decomposition tag, QString & str, switch (tag) { case QChar::Medial: return (left & right); case QChar::Initial: return (left && !right); case QChar::Final: return (right);// && !left); case QChar::Isolated: default: return (!right && !left); } } // format() #endif /* QString::compose() and visual() were developed by Gordon Tisher <tisher@uniserve.ca>, with input from Lars Knoll <knoll@mpi-hd.mpg.de>, who developed the unicode data tables. */ /*! \warning This function is not supported in Qt 3.x. It is provided for experimental and illustrative purposes only. It is mainly of interest to those experimenting with Arabic and other composition-rich texts. Applies possible ligatures to a QString. Useful when composition-rich text requires rendering with glyph-poor fonts, but it also makes compositions such as QChar(0x0041) ('A') and QChar(0x0308) (Unicode accent diaresis), giving QChar(0x00c4) (German A Umlaut). */ void QString::compose() { #ifndef QT_NO_UNICODETABLES unsigned int index=0, len; unsigned int cindex = 0; QChar code, head; QMemArray<QChar> dia; QString composed = *this; while (index < length()) { code = at(index); //printf("\n\nligature for 0x%x:\n", code.unicode()); QLigature ligature(code); ligature.first(); while(ligature.current()) { if ((len = ligature.match(*this, index)) != 0) { head = ligature.head(); unsigned short code = head.unicode(); // we exclude Arabic presentation forms A and a few // other ligatures, which are undefined in most fonts if(!(code > 0xfb50 && code < 0xfe80) && !(code > 0xfb00 && code < 0xfb2a)) { // joining info is only needed for Arabic if (format(ligature.tag(), *this, index, len)) { //printf("using ligature 0x%x, len=%d\n",code,len); // replace letter composed.replace(cindex, len, QChar(head)); index += len-1; // we continue searching in case we have a final // form because medial ones are preferred. if ( len != 1 || ligature.tag() !=QChar::Final ) break; } } } ligature.next(); } cindex++; index++; } *this = composed; #endif } // These macros are used for efficient allocation of QChar strings. // IMPORTANT! If you change these, make sure you also change the // "delete unicode" statement in ~QStringData() in qstring.h correspondingly! #define QT_ALLOC_QCHAR_VEC( N ) (QChar*) new char[ sizeof(QChar)*( N ) ] #define QT_DELETE_QCHAR_VEC( P ) delete[] ((char*)( P )) /*! This utility function converts the 8-bit string \a ba to Unicode, returning the result. The caller is responsible for deleting the return value with delete[]. */ -QChar* QString::asciiToUnicode( const QByteArray& ba, uint* len ) +QChar* QString::latin1ToUnicode( const QByteArray& ba, uint* len ) { if ( ba.isNull() ) { *len = 0; return 0; } int l = 0; while ( l < (int)ba.size() && ba[l] ) l++; char* str = ba.data(); QChar *uc = new QChar[ l ]; // Can't use macro, since function is public QChar *result = uc; if ( len ) *len = l; while (l--) *uc++ = *str++; return result; } -static QChar* internalAsciiToUnicode( const QByteArray& ba, uint* len ) +static QChar* internalLatin1ToUnicode( const QByteArray& ba, uint* len ) { if ( ba.isNull() ) { *len = 0; return 0; } int l = 0; while ( l < (int)ba.size() && ba[l] ) l++; char* str = ba.data(); QChar *uc = QT_ALLOC_QCHAR_VEC( l ); QChar *result = uc; if ( len ) *len = l; while (l--) *uc++ = *str++; return result; } /*! \overload This utility function converts the '\0'-terminated 8-bit string \a str to Unicode, returning the result and setting \a *len to the length of the Unicode string. The caller is responsible for deleting the return value with delete[]. */ -QChar* QString::asciiToUnicode( const char *str, uint* len, uint maxlen ) +QChar* QString::latin1ToUnicode( const char *str, uint* len, uint maxlen ) { QChar* result = 0; uint l = 0; if ( str ) { if ( maxlen != (uint)-1 ) { while ( l < maxlen && str[l] ) l++; } else { // Faster? - l = qstrlen(str); + l = strlen( str ); } QChar *uc = new QChar[ l ]; // Can't use macro since function is public result = uc; uint i = l; while ( i-- ) *uc++ = *str++; } if ( len ) *len = l; return result; } -static QChar* internalAsciiToUnicode( const char *str, uint* len, +static QChar* internalLatin1ToUnicode( const char *str, uint* len, uint maxlen = (uint)-1 ) { QChar* result = 0; uint l = 0; if ( str ) { if ( maxlen != (uint)-1 ) { while ( l < maxlen && str[l] ) l++; } else { // Faster? - l = qstrlen(str); + l = strlen( str ); } QChar *uc = QT_ALLOC_QCHAR_VEC( l ); result = uc; uint i = l; while ( i-- ) *uc++ = *str++; } if ( len ) *len = l; return result; } /*! This utility function converts \a l 16-bit characters from \a uc to ASCII, returning a '\0'-terminated string. The caller is responsible for deleting the resultant string with delete[]. */ -char* QString::unicodeToAscii(const QChar *uc, uint l) +char* QString::unicodeToLatin1(const QChar *uc, uint l) { if (!uc) { return 0; } char *a = new char[l+1]; char *result = a; while (l--) { *a++ = (uc->unicode() > 0xff) ? '?' : (char)uc->unicode(); uc++; } *a = '\0'; return result; } /***************************************************************************** QString member functions *****************************************************************************/ /*! \class QString qstring.h \reentrant \brief The QString class provides an abstraction of Unicode text and the classic C '\0'-terminated char array. \ingroup tools \ingroup shared \ingroup text \mainclass QString uses \link shclass.html implicit sharing\endlink, which makes it very efficient and easy to use. In all of the QString methods that take \c {const char *} parameters, the \c {const char *} is interpreted as a classic C-style '\0'-terminated ASCII string. It is legal for the \c {const char *} parameter to be 0. If the \c {const char *} is not '\0'-terminated, the results are undefined. Functions that copy classic C strings into a QString will not copy the terminating '\0' character. The QChar array of the QString (as returned by unicode()) is generally not terminated by a '\0'. If you need to pass a QString to a function that requires a C '\0'-terminated string use latin1(). \keyword QString::null A QString that has not been assigned to anything is \e null, i.e. both the length and data pointer is 0. A QString that references the empty string ("", a single '\0' char) is \e empty. Both null and empty QStrings are legal parameters to the methods. Assigning \c{(const char *) 0} to QString gives a null QString. For convenience, \c QString::null is a null QString. When sorting, empty strings come first, followed by non-empty strings, followed by null strings. We recommend using \c{if ( !str.isNull() )} to check for a non-null string rather than \c{if ( !str )}; see \l operator!() for an explanation. Note that if you find that you are mixing usage of \l QCString, QString, and \l QByteArray, this causes lots of unnecessary copying and might indicate that the true nature of the data you are dealing with is uncertain. If the data is '\0'-terminated 8-bit data, use \l QCString; if it is unterminated (i.e. contains '\0's) 8-bit data, use \l QByteArray; if it is text, use QString. Lists of strings are handled by the QStringList class. You can split a string into a list of strings using QStringList::split(), and join a list of strings into a single string with an optional separator using QStringList::join(). You can obtain a list of strings from a string list that contain a particular substring or that match a particular \link qregexp.html regex\endlink using QStringList::grep(). <b>Note for C programmers</b> Due to C++'s type system and the fact that QString is implicitly shared, QStrings may be treated like ints or other simple base types. For example: \code QString boolToString( bool b ) { QString result; if ( b ) result = "True"; else result = "False"; return result; } \endcode The variable, result, is an auto variable allocated on the stack. When return is called, because we're returning by value, The copy constructor is called and a copy of the string is returned. (No actual copying takes place thanks to the implicit sharing, see below.) Throughout Qt's source code you will encounter QString usages like this: \code QString func( const QString& input ) { QString output = input; // process output return output; } \endcode The 'copying' of input to output is almost as fast as copying a pointer because behind the scenes copying is achieved by incrementing a reference count. QString (like all Qt's implicitly shared classes) operates on a copy-on-write basis, only copying if an instance is actually changed. If you wish to create a deep copy of a QString without losing any Unicode information then you should use QDeepCopy. \sa QChar QCString QByteArray QConstString */ /*! \enum Qt::ComparisonFlags \internal */ /*! \enum Qt::StringComparisonMode This enum type is used to set the string comparison mode when searching for an item. It is used by QListBox, QListView and QIconView, for example. We'll refer to the string being searched as the 'target' string. \value CaseSensitive The strings must match case sensitively. \value ExactMatch The target and search strings must match exactly. \value BeginsWith The target string begins with the search string. \value EndsWith The target string ends with the search string. \value Contains The target string contains the search string. If you OR these flags together (excluding \c CaseSensitive), the search criteria be applied in the following order: \c ExactMatch, \c BeginsWith, \c EndsWith, \c Contains. Matching is case-insensitive unless \c CaseSensitive is set. \c CaseSensitive may be OR-ed with any combination of the other flags. */ Q_EXPORT QStringData *QString::shared_null = 0; QT_STATIC_CONST_IMPL QString QString::null; QT_STATIC_CONST_IMPL QChar QChar::null; QT_STATIC_CONST_IMPL QChar QChar::replacement((ushort)0xfffd); QT_STATIC_CONST_IMPL QChar QChar::byteOrderMark((ushort)0xfeff); QT_STATIC_CONST_IMPL QChar QChar::byteOrderSwapped((ushort)0xfffe); QT_STATIC_CONST_IMPL QChar QChar::nbsp((ushort)0x00a0); QStringData* QString::makeSharedNull() { QString::shared_null = new QStringData; #if defined( Q_OS_MAC ) QString *that = const_cast<QString *>(&QString::null); that->d = QString::shared_null; #endif return QString::shared_null; } -// Uncomment this to get some useful statistics. -// #define Q2HELPER(x) x - -#ifdef Q2HELPER -static int stat_construct_charstar=0; -static int stat_construct_charstar_size=0; -static int stat_construct_null=0; -static int stat_construct_int=0; -static int stat_construct_int_size=0; -static int stat_construct_ba=0; -static int stat_get_ascii=0; -static int stat_get_ascii_size=0; -static int stat_copy_on_write=0; -static int stat_copy_on_write_size=0; -static int stat_fast_copy=0; -Q_EXPORT void qt_qstring_stats() -{ - qDebug("construct_charstar = %d (%d chars)", stat_construct_charstar, stat_construct_charstar_size); - qDebug("construct_null = %d", stat_construct_null); - qDebug("construct_int = %d (%d chars)", stat_construct_int, stat_construct_int_size); - qDebug("construct_ba = %d", stat_construct_ba); - qDebug("get_ascii = %d (%d chars)", stat_get_ascii, stat_get_ascii_size); - qDebug("copy_on_write = %d (%d chars)", stat_copy_on_write, stat_copy_on_write_size); - qDebug("fast_copy = %d", stat_fast_copy); -} -#else -#define Q2HELPER(x) -#endif - /*! \fn QString::QString() Constructs a null string, i.e. both the length and data pointer are 0. \sa isNull() */ /*! Constructs a string of length one, containing the character \a ch. */ QString::QString( QChar ch ) { d = new QStringData( QT_ALLOC_QCHAR_VEC( 1 ), 1, 1 ); d->unicode[0] = ch; } /*! Constructs an implicitly shared copy of \a s. This is very fast since it only involves incrementing a reference count. */ QString::QString( const QString &s ) : d(s.d) { - Q2HELPER(stat_fast_copy++) d->ref(); } /*! \internal Private function. Constructs a string with preallocated space for \a size characters. The string is empty. \sa isNull() */ QString::QString( int size, bool /*dummy*/ ) { if ( size ) { - Q2HELPER(stat_construct_int++) int l = size; - Q2HELPER(stat_construct_int_size+=l) QChar* uc = QT_ALLOC_QCHAR_VEC( l ); d = new QStringData( uc, 0, l ); } else { - Q2HELPER(stat_construct_null++) d = shared_null ? shared_null : (shared_null=new QStringData); d->ref(); } } /*! Constructs a string that is a deep copy of \a ba interpreted as a classic C string. */ QString::QString( const QByteArray& ba ) { - Q2HELPER(stat_construct_ba++) +#ifndef QT_NO_TEXTCODEC + if ( QTextCodec::codecForCStrings() ) { + d = 0; + *this = fromAscii( ba.data(), ba.size() ); + return; + } +#endif uint l; - QChar *uc = internalAsciiToUnicode(ba,&l); + QChar *uc = internalLatin1ToUnicode(ba,&l); d = new QStringData(uc,l,l); } /*! Constructs a string that is a deep copy of the first \a length characters in the QChar array. If \a unicode and \a length are 0, then a null string is created. If only \a unicode is 0, the string is empty but has \a length characters of space preallocated: QString expands automatically anyway, but this may speed up some cases a little. We recommend using the plain constructor and setLength() for this purpose since it will result in more readable code. \sa isNull() setLength() */ QString::QString( const QChar* unicode, uint length ) { if ( !unicode && !length ) { d = shared_null ? shared_null : makeSharedNull(); d->ref(); } else { QChar* uc = QT_ALLOC_QCHAR_VEC( length ); if ( unicode ) memcpy(uc, unicode, length*sizeof(QChar)); d = new QStringData(uc,unicode ? length : 0,length); } } /*! Constructs a string that is a deep copy of \a str, interpreted as a classic C string. If \a str is 0, then a null string is created. This is a cast constructor, but it is perfectly safe: converting a Latin1 const char* to QString preserves all the information. You can disable this constructor by defining \c QT_NO_CAST_ASCII when you compile your applications. You can also make QString objects by using setLatin1(), fromLatin1(), fromLocal8Bit(), and fromUtf8(). Or whatever encoding is appropriate for the 8-bit data you have. \sa isNull() */ QString::QString( const char *str ) { - Q2HELPER(stat_construct_charstar++) +#ifndef QT_NO_TEXTCODEC + if ( QTextCodec::codecForCStrings() ) { + d = 0; + *this = fromAscii( str ); + return; + } +#endif + uint l; + QChar *uc = internalLatin1ToUnicode(str,&l); + d = new QStringData(uc,l,l); +} + +#ifndef QT_NO_STL +/*! + Constructs a string that is a deep copy of \a str. + + This is the same as fromAscii(\a str). +*/ + +QString::QString( const std::string &str ) +{ +#ifndef QT_NO_TEXTCODEC + if ( QTextCodec::codecForCStrings() ) { + d = 0; + *this = fromAscii( str.c_str() ); + return; + } +#endif uint l; - QChar *uc = internalAsciiToUnicode(str,&l); - Q2HELPER(stat_construct_charstar_size+=l) + QChar *uc = internalLatin1ToUnicode(str.c_str(),&l); d = new QStringData(uc,l,l); } +#endif /*! \fn QString::~QString() Destroys the string and frees the string's data if this is the last reference to the string. */ /*! Deallocates any space reserved solely by this QString. If the string does not share its data with another QString instance, nothing happens; otherwise the function creates a new, unique copy of this string. This function is called whenever the string is modified. */ void QString::real_detach() { setLength( length() ); } void QString::deref() { - if ( d->deref() ) { + if ( d && d->deref() ) { if ( d != shared_null ) delete d; - d = 0; // helps debugging + d = 0; } } void QStringData::deleteSelf() { delete this; } /*! \fn QString& QString::operator=( QChar c ) Sets the string to contain just the single character \a c. */ /*! + \fn QString& QString::operator=( const std::string& s ) + + \overload + + Makes a deep copy of \a s and returns a reference to the deep + copy. +*/ + +/*! \fn QString& QString::operator=( char c ) \overload Sets the string to contain just the single character \a c. */ /*! \overload Assigns a shallow copy of \a s to this string and returns a reference to this string. This is very fast because the string isn't actually copied. */ QString &QString::operator=( const QString &s ) { - Q2HELPER(stat_fast_copy++) s.d->ref(); deref(); d = s.d; return *this; } /*! \overload Assigns a deep copy of \a cs, interpreted as a classic C string, to this string and returns a reference to this string. */ QString &QString::operator=( const QCString& cs ) { - return setLatin1(cs); + return setAscii(cs); } /*! \overload Assigns a deep copy of \a str, interpreted as a classic C string to this string and returns a reference to this string. If \a str is 0, then a null string is created. \sa isNull() */ QString &QString::operator=( const char *str ) { - return setLatin1(str); + return setAscii(str); } /*! \fn bool QString::isNull() const Returns TRUE if the string is null; otherwise returns FALSE. A null string is always empty. \code QString a; // a.unicode() == 0, a.length() == 0 a.isNull(); // TRUE, because a.unicode() == 0 a.isEmpty(); // TRUE \endcode \sa isEmpty(), length() */ /*! \fn bool QString::isEmpty() const Returns TRUE if the string is empty, i.e. if length() == 0; otherwise returns FALSE. Null strings are also empty. \code QString a( "" ); a.isEmpty(); // TRUE a.isNull(); // FALSE QString b; b.isEmpty(); // TRUE b.isNull(); // TRUE \endcode \sa isNull(), length() */ /*! \fn uint QString::length() const Returns the length of the string. Null strings and empty strings have zero length. \sa isNull(), isEmpty() */ /*! If \a newLen is less than the length of the string, then the string is truncated at position \a newLen. Otherwise nothing happens. \code QString s = "truncate me"; s.truncate( 5 ); // s == "trunc" \endcode \sa setLength() */ void QString::truncate( uint newLen ) { if ( newLen < d->len ) setLength( newLen ); } /*! Ensures that at least \a newLen characters are allocated to the string, and sets the length of the string to \a newLen. Any new space allocated contains arbitrary data. - If \a newLen is 0, then the string becomes empty, unless the - string is null, in which case it remains null. + If \a newLen is 0, then the string becomes empty (non-null). If it is not possible to allocate enough memory, the string remains unchanged. This function always detaches the string from other references to the same data. This function is useful for code that needs to build up a long string and wants to avoid repeated reallocation. In this example, we want to add to the string until some condition is true, and we're fairly sure that size is big enough: \code QString result; - int resultLength = 0; - result.setLength( newLen ) // allocate some space + int len = 0; + result.setLength( maxLen ); // allocate some space while ( ... ) { - result[resultLength++] = ... // fill (part of) the space with data + result[len++] = ... // fill part of the space } - result.truncate[resultLength]; // and get rid of the undefined junk + result.truncate( len ); // and get rid of the rest \endcode If \a newLen is an underestimate, the worst that will happen is that the loop will slow down. \sa truncate(), isNull(), isEmpty(), length() */ void QString::setLength( uint newLen ) { if ( d->count != 1 || newLen > d->maxl || ( newLen * 4 < d->maxl && d->maxl > 4 ) ) { // detach, grow or shrink - Q2HELPER(stat_copy_on_write++) - Q2HELPER(stat_copy_on_write_size+=d->len) uint newMax = computeNewMax( newLen ); QChar* nd = QT_ALLOC_QCHAR_VEC( newMax ); if ( nd ) { uint len = QMIN( d->len, newLen ); if ( d->unicode ) memcpy( nd, d->unicode, sizeof(QChar)*len ); deref(); d = new QStringData( nd, newLen, newMax ); } } else { d->len = newLen; d->setDirty(); } } /*! This function will return a string that replaces the lowest numbered occurrence of \c %1, \c %2, ..., \c %9 with \a a. The \a fieldwidth value specifies the minimum amount of space that \a a is padded to. A positive value will produce right-aligned text, whereas a negative value will produce left-aligned text. + The following example shows how we could create a 'status' string + when processing a list of files: \code - QString firstName( "Joe" ); - QString lastName( "Bloggs" ); - QString fullName; - fullName = QString( "First name is '%1', last name is '%2'" ) - .arg( firstName ) - .arg( lastName ); - - // fullName == First name is 'Joe', last name is 'Bloggs' + QString status = QString( "Processing file %1 of %2: %3" ) + .arg( i ) // current file's number + .arg( total ) // number of files to process + .arg( fileName ); // current file's name \endcode - Note that using arg() to construct sentences as we've done in the - example above does not usually translate well into other languages - because sentence structure and word order often differ between - languages. + It is generally fine to use filenames and numbers as we have done + in the example above. But note that using arg() to construct + natural language sentences does not usually translate well into + other languages because sentence structure and word order often + differ between languages. If there is no place marker (\c %1 or \c %2, etc.), a warning message (qWarning()) is output and the text is appended at the end of the string. We recommend that the correct number of place markers is always used in production code. */ QString QString::arg( const QString& a, int fieldwidth ) const { int pos, len; QString r = *this; if ( !findArg( pos, len ) ) { qWarning( "QString::arg(): Argument missing: %s, %s", latin1(), a.latin1() ); // Make sure the text at least appears SOMEWHERE r += ' '; pos = r.length(); len = 0; } r.replace( pos, len, a ); if ( fieldwidth < 0 ) { QString s; while ( (uint)-fieldwidth > a.length() ) { s += ' '; fieldwidth++; } r.insert( pos + a.length(), s ); } else if ( fieldwidth ) { QString s; while ( (uint)fieldwidth > a.length() ) { s += ' '; fieldwidth--; } r.insert( pos, s ); } return r; } /*! \overload The \a fieldwidth value specifies the minimum amount of space that \a a is padded to. A positive value will produce a right-aligned number, whereas a negative value will produce a left-aligned number. \a a is expressed in base \a base, which is 10 by default and must be between 2 and 36. \code QString str; str = QString( "Decimal 63 is %1 in hexadecimal" ) .arg( 63, 0, 16 ); // str == "Decimal 63 is 3f in hexadecimal" \endcode */ QString QString::arg( long a, int fieldwidth, int base ) const { return arg( QString::number(a, base), fieldwidth ); } /*! \overload \a a is expressed in base \a base, which is 10 by default and must be between 2 and 36. */ QString QString::arg( ulong a, int fieldwidth, int base ) const { return arg( QString::number(a, base), fieldwidth ); } /*! \fn QString QString::arg( int a, int fieldwidth, int base ) const \overload \a a is expressed in base \a base, which is 10 by default and must be between 2 and 36. */ /*! \fn QString QString::arg( uint a, int fieldwidth, int base ) const \overload \a a is expressed in base \a base, which is 10 by default and must be between 2 and 36. */ /*! \fn QString QString::arg( short a, int fieldwidth, int base ) const @@ -13681,332 +13691,332 @@ QString QString::arg( QChar a, int fieldwidth ) const /*! \overload \target arg-formats Argument \a a is formatted according to the \a fmt format specified, which is 'g' by default and can be any of the following: \table \header \i Format \i Meaning \row \i \c e \i format as [-]9.9e[+|-]999 \row \i \c E \i format as [-]9.9E[+|-]999 \row \i \c f \i format as [-]9.9 \row \i \c g \i use \c e or \c f format, whichever is the most concise \row \i \c G \i use \c E or \c f format, whichever is the most concise \endtable With 'e', 'E', and 'f', \a prec is the number of digits after the decimal point. With 'g' and 'G', \a prec is the maximum number of significant digits (trailing zeroes are omitted). \code double d = 12.34; QString ds = QString( "'E' format, precision 3, gives %1" ) .arg( d, 0, 'E', 3 ); // ds == "1.234E+001" \endcode */ QString QString::arg( double a, int fieldwidth, char fmt, int prec ) const { return arg( QString::number( a, fmt, prec ), fieldwidth ); } /* Just 1-digit arguments. */ bool QString::findArg( int& pos, int& len ) const { char lowest=0; register const QChar *uc = d->unicode; const uint l = length(); for (uint i = 0; i < l; i++) { if ( uc[i] == '%' && i+1<l ) { QChar dig = uc[i+1]; if ( dig >= '0' && dig <= '9' ) { if ( !lowest || dig < lowest ) { lowest = dig; pos = i; len = 2; } } } } return lowest != 0; } /*! Safely builds a formatted string from the format string \a cformat and an arbitrary list of arguments. The format string supports all the escape sequences of printf() in the standard C library. The %s escape sequence expects a utf8() encoded string. The format string \e cformat is expected to be in latin1. If you need a Unicode format string, use arg() instead. For typesafe string building, with full Unicode support, you can use QTextOStream like this: \code QString str; QString s = ...; int x = ...; QTextOStream( &str ) << s << " : " << x; \endcode For \link QObject::tr() translations,\endlink especially if the strings contains more than one escape sequence, you should consider using the arg() function instead. This allows the order of the replacements to be controlled by the translator, and has Unicode support. \sa arg() */ #ifndef QT_NO_SPRINTF QString &QString::sprintf( const char* cformat, ... ) { va_list ap; va_start( ap, cformat ); if ( !cformat || !*cformat ) { // Qt 1.x compat *this = fromLatin1( "" ); return *this; } - QString format = fromLatin1( cformat ); + QString format = fromAscii( cformat ); QRegExp escape( "%#?0?-? ?\\+?'?[0-9*]*\\.?[0-9*]*h?l?L?q?Z?" ); QString result; uint last = 0; int pos; int len = 0; for (;;) { pos = escape.search( format, last ); len = escape.matchedLength(); // Non-escaped text if ( pos > (int)last ) result += format.mid( last, pos - last ); if ( pos < 0 ) { // The rest if ( last < format.length() ) result += format.mid( last ); break; } last = pos + len + 1; // Escape QString f = format.mid( pos, len ); uint width, decimals; int params = 0; int wpos = f.find('*'); if ( wpos >= 0 ) { params++; width = va_arg( ap, int ); if ( f.find('*', wpos + 1) >= 0 ) { decimals = va_arg( ap, int ); params++; } else { decimals = 0; } } else { decimals = width = 0; } QString replacement; if ( format[pos + len] == 's' || format[pos + len] == 'S' || format[pos + len] == 'c' ) { bool rightjust = ( f.find('-') < 0 ); // %-5s really means left adjust in sprintf if ( wpos < 0 ) { QRegExp num( fromLatin1("[0-9]+") ); int p = num.search( f ); int nlen = num.matchedLength(); int q = f.find( '.' ); if ( q < 0 || (p < q && p >= 0) ) width = f.mid( p, nlen ).toInt(); if ( q >= 0 ) { p = num.search( f, q ); // "decimals" is used to specify string truncation if ( p >= 0 ) decimals = f.mid( p, nlen ).toInt(); } } if ( format[pos + len] == 's' ) { QString s = QString::fromUtf8( va_arg(ap, char*) ); replacement = ( decimals <= 0 ) ? s : s.left( decimals ); } else { int ch = va_arg(ap, int); replacement = QChar((ushort)ch); } if ( replacement.length() < width ) { replacement = rightjust ? replacement.rightJustify(width) : replacement.leftJustify(width); } } else if ( format[pos+len] == '%' ) { replacement = '%'; } else if ( format[pos+len] == 'n' ) { int* n = va_arg(ap, int*); *n = result.length(); } else { char in[64], out[330]; strncpy(in,f.latin1(),63); out[0] = '\0'; char fch = format[pos+len].latin1(); in[f.length()] = fch; switch ( fch ) { case 'd': case 'i': case 'o': case 'u': case 'x': case 'X': { int value = va_arg( ap, int ); switch ( params ) { case 0: ::sprintf( out, in, value ); break; case 1: ::sprintf( out, in, width, value ); break; case 2: ::sprintf( out, in, width, decimals, value ); } } break; case 'e': case 'E': case 'f': case 'g': case 'G': { double value = va_arg( ap, double ); switch ( params ) { case 0: ::sprintf( out, in, value ); break; case 1: ::sprintf( out, in, width, value ); break; case 2: ::sprintf( out, in, width, decimals, value ); } } break; case 'p': { void* value = va_arg( ap, void * ); switch ( params ) { case 0: ::sprintf( out, in, value ); break; case 1: ::sprintf( out, in, width, value ); break; case 2: ::sprintf( out, in, width, decimals, value ); } } } - replacement = fromLatin1( out ); + replacement = fromAscii( out ); } result += replacement; } *this = result; va_end( ap ); return *this; } #endif /*! Fills the string with \a len characters of value \a c, and returns a reference to the string. If \a len is negative (the default), the current string length is used. \code QString str; str.fill( 'g', 5 ); // string == "ggggg" \endcode */ QString& QString::fill( QChar c, int len ) { if ( len < 0 ) len = length(); if ( len == 0 ) { *this = ""; } else { deref(); QChar * nd = QT_ALLOC_QCHAR_VEC( len ); d = new QStringData(nd,len,len); while (len--) *nd++ = c; } return *this; } /*! \fn QString QString::copy() const \obsolete In Qt 2.0 and later, all calls to this function are needless. Just remove them. */ /*! \overload Finds the first occurrence of the character \a c, starting at position \a index. If \a index is -1, the search starts at the last character; if -2, at the next to last character and so on. (See findRev() for searching backwards.) If \a cs is TRUE, the search is case sensitive; otherwise the search is case insensitive. Returns the position of \a c or -1 if \a c could not be found. */ int QString::find( QChar c, int index, bool cs ) const { const uint l = length(); if ( index < 0 ) index += l; if ( (uint)index >= l ) return -1; register const QChar *uc = unicode()+index; const QChar *end = unicode() + l; if ( cs ) { while ( uc < end && *uc != c ) uc++; } else { c = ::lower( c ); while ( uc < end && ::lower( *uc ) != c ) uc++; } if ( uint(uc - unicode()) >= l ) return -1; return (int)(uc - unicode()); } /* an implementation of the Boyer-Moore search algorithm */ /* initializes the skiptable to know haw far ahead we can skip on a wrong match */ static void bm_init_skiptable( const QString &pattern, uint *skiptable, bool cs ) { int i = 0; register uint *st = skiptable; int l = pattern.length(); while ( i++ < 0x100/8 ) { *(st++) = l; @@ -14031,343 +14041,351 @@ static void bm_init_skiptable( const QString &pattern, uint *skiptable, bool cs } } } static int bm_find( const QString &str, int index, const QString &pattern, uint *skiptable, bool cs ) { const uint l = str.length(); if ( pattern.isEmpty() ) return index > (int)l ? -1 : index; const QChar *uc = str.unicode(); const QChar *puc = pattern.unicode(); const uint pl = pattern.length(); const uint pl_minus_one = pl - 1; register const QChar *current = uc + index + pl_minus_one; const QChar *end = uc + l; if ( cs ) { while( current < end ) { uint skip = skiptable[ current->cell() ]; if ( !skip ) { // possible match while( skip < pl ) { if ( *(current - skip ) != puc[pl_minus_one-skip] ) break; skip++; } if ( skip > pl_minus_one ) { // we have a match return (current - uc) - skip + 1; } // in case we don't have a match we are a bit inefficient as we only skip by one // when we have the non matching char in the string. if ( skiptable[ (current-skip)->cell() ] == pl ) skip = pl - skip; else skip = 1; } current += skip; } } else { while( current < end ) { uint skip = skiptable[ ::lower( *current ).cell() ]; if ( !skip ) { // possible match while( skip < pl ) { if ( ::lower( *(current - skip) ) != ::lower( puc[pl_minus_one-skip] ) ) break; skip++; } if ( skip > pl_minus_one ) // we have a match return (current - uc) - skip + 1; // in case we don't have a match we are a bit inefficient as we only skip by one // when we have the non matching char in the string. if ( skiptable[ ::lower( (current - skip)->cell() ) ] == pl ) skip = pl - skip; else skip = 1; } current += skip; } } // not found return -1; } #define REHASH( a ) \ if ( sl_minus_1 < sizeof(uint) * CHAR_BIT ) \ hashHaystack -= (a) << sl_minus_1; \ hashHaystack <<= 1 /*! \overload Finds the first occurrence of the string \a str, starting at position \a index. If \a index is -1, the search starts at the last character, if it is -2, at the next to last character and so on. (See findRev() for searching backwards.) If \a cs is TRUE, the search is case sensitive; otherwise the search is case insensitive. Returns the position of \a str or -1 if \a str could not be found. */ int QString::find( const QString& str, int index, bool cs ) const { const uint l = length(); const uint sl = str.length(); if ( index < 0 ) index += l; if ( sl + index > l ) return -1; if ( !sl ) return index; +#ifndef MACOSX_101 if ( sl == 1 ) return find( *str.unicode(), index, cs ); +#endif // we use the Boyer-Moore algorithm in cases where the overhead // for the hash table should pay off, otherwise we use a simple // hash function if ( l > 500 && sl > 5 ) { uint skiptable[0x100]; bm_init_skiptable( str, skiptable, cs ); return bm_find( *this, index, str, skiptable, cs ); } /* We use some hashing for efficiency's sake. Instead of comparing strings, we compare the hash value of str with that of a part of this QString. Only if that matches, we call ucstrncmp or ucstrnicmp. */ const QChar* needle = str.unicode(); const QChar* haystack = unicode() + index; const QChar* end = unicode() + (l-sl); const uint sl_minus_1 = sl-1; uint hashNeedle = 0, hashHaystack = 0, i; if ( cs ) { for ( i = 0; i < sl; ++i ) { hashNeedle = ((hashNeedle<<1) + needle[i].unicode() ); hashHaystack = ((hashHaystack<<1) + haystack[i].unicode() ); } hashHaystack -= (haystack+sl_minus_1)->unicode(); while ( haystack <= end ) { hashHaystack += (haystack+sl_minus_1)->unicode(); if ( hashHaystack == hashNeedle && ucstrncmp( needle, haystack, sl ) == 0 ) return haystack-unicode(); REHASH( haystack->unicode() ); ++haystack; } } else { for ( i = 0; i < sl; ++i ) { hashNeedle = ((hashNeedle<<1) + ::lower( needle[i].unicode() ).unicode() ); hashHaystack = ((hashHaystack<<1) + ::lower( haystack[i].unicode() ).unicode() ); } hashHaystack -= ::lower(*(haystack+sl_minus_1)).unicode(); while ( haystack <= end ) { hashHaystack += ::lower(*(haystack+sl_minus_1)).unicode(); if ( hashHaystack == hashNeedle && ucstrnicmp( needle, haystack, sl ) == 0 ) return haystack-unicode(); REHASH( ::lower(*haystack).unicode() ); ++haystack; } } return -1; } /*! \fn int QString::findRev( const char* str, int index ) const Equivalent to findRev(QString(\a str), \a index). */ /*! \fn int QString::find( const char* str, int index ) const \overload Equivalent to find(QString(\a str), \a index). */ /*! \overload Finds the first occurrence of the character \a c, starting at position \a index and searching backwards. If the index is -1, the search starts at the last character, if it is -2, at the next to last character and so on. Returns the position of \a c or -1 if \a c could not be found. If \a cs is TRUE, the search is case sensitive; otherwise the search is case insensitive. \code QString string( "bananas" ); int i = string.findRev( 'a' ); // i == 5 \endcode */ int QString::findRev( QChar c, int index, bool cs ) const { +#ifdef MACOSX_101 + return findRev( QString( c ), index, cs ); +#else const uint l = length(); if ( index < 0 ) index += l; if ( (uint)index >= l ) return -1; const QChar *end = unicode(); register const QChar *uc = end + index; if ( cs ) { while ( uc >= end && *uc != c ) uc--; } else { c = ::lower( c ); while ( uc >= end && ::lower( *uc ) != c ) uc--; } return uc - end; +#endif } /*! \overload Finds the first occurrence of the string \a str, starting at position \a index and searching backwards. If the index is -1, the search starts at the last character, if it is -2, at the next to last character and so on. Returns the position of \a str or -1 if \a str could not be found. If \a cs is TRUE, the search is case sensitive; otherwise the search is case insensitive. \code QString string("bananas"); int i = string.findRev( "ana" ); // i == 3 \endcode */ int QString::findRev( const QString& str, int index, bool cs ) const { /* See QString::find() for explanations. */ const uint l = length(); if ( index < 0 ) index += l; const uint sl = str.length(); int delta = l-sl; if ( index < 0 || index > (int)l || delta < 0 ) return -1; if ( index > delta ) index = delta; +#ifndef MACOSX_101 if ( sl == 1 ) return findRev( *str.unicode(), index, cs ); +#endif const QChar* needle = str.unicode(); const QChar* haystack = unicode() + index; const QChar* end = unicode(); const uint sl_minus_1 = sl-1; const QChar* n = needle+sl_minus_1; const QChar* h = haystack+sl_minus_1; uint hashNeedle = 0, hashHaystack = 0, i; if ( cs ) { for ( i = 0; i < sl; ++i ) { hashNeedle = ((hashNeedle<<1) + (n-i)->unicode() ); hashHaystack = ((hashHaystack<<1) + (h-i)->unicode() ); } hashHaystack -= haystack->unicode(); while ( haystack >= end ) { hashHaystack += haystack->unicode(); if ( hashHaystack == hashNeedle && ucstrncmp( needle, haystack, sl ) == 0 ) return haystack-unicode(); --haystack; REHASH( (haystack+sl)->unicode() ); } } else { for ( i = 0; i < sl; ++i ) { hashNeedle = ((hashNeedle<<1) + ::lower( (n-i)->unicode() ).unicode() ); hashHaystack = ((hashHaystack<<1) + ::lower( (h-i)->unicode() ).unicode() ); } hashHaystack -= ::lower(*haystack).unicode(); while ( haystack >= end ) { hashHaystack += ::lower(*haystack).unicode(); if ( hashHaystack == hashNeedle && ucstrnicmp( needle, haystack, sl ) == 0 ) return haystack-unicode(); --haystack; REHASH( ::lower(*(haystack+sl)).unicode() ); } } return -1; } #undef REHASH /*! \enum QString::SectionFlags \value SectionDefault Empty fields are counted, leading and trailing separators are not included, and the separator is compared case sensitively. \value SectionSkipEmpty Treat empty fields as if they don't exist, i.e. they are not considered as far as \e start and \e end are concerned. \value SectionIncludeLeadingSep Include the leading separator (if any) in the result string. \value SectionIncludeTrailingSep Include the trailing separator (if any) in the result string. \value SectionCaseInsensitiveSeps Compare the separator case-insensitively. Any of the last four values can be OR-ed together to form a flag. \sa section() */ /*! \fn QString QString::section( QChar sep, int start, int end = 0xffffffff, int flags = SectionDefault ) const This function returns a section of the string. This string is treated as a sequence of fields separated by the character, \a sep. The returned string consists of the fields from position \a start to position \a end inclusive. If \a end is not specified, all fields from position \a start to the end of the string are included. Fields are numbered 0, 1, 2, etc., counting from the left, and -1, -2, etc., counting from right to left. The \a flags argument can be used to affect some aspects of the function's behaviour, e.g. whether to be case sensitive, whether to skip empty fields and how to deal with leading and trailing separators; see \l{SectionFlags}. \code QString csv( "forename,middlename,surname,phone" ); QString s = csv.section( ',', 2, 2 ); // s == "surname" QString path( "/usr/local/bin/myapp" ); // First field is empty QString s = path.section( '/', 3, 4 ); // s == "bin/myapp" QString s = path.section( '/', 3, 3, SectionSkipEmpty ); // s == "myapp" @@ -14886,464 +14904,484 @@ QString QString::mid( uint index, uint len ) const } } /*! Returns a string of length \a width that contains this string padded by the \a fill character. If \a truncate is FALSE and the length of the string is more than \a width, then the returned string is a copy of the string. If \a truncate is TRUE and the length of the string is more than \a width, then any characters in a copy of the string after length \a width are removed, and the copy is returned. \code QString s( "apple" ); QString t = s.leftJustify( 8, '.' ); // t == "apple..." \endcode \sa rightJustify() */ QString QString::leftJustify( uint width, QChar fill, bool truncate ) const { QString result; int len = length(); int padlen = width - len; if ( padlen > 0 ) { result.setLength(len+padlen); if ( len ) memcpy( result.d->unicode, unicode(), sizeof(QChar)*len ); QChar* uc = result.d->unicode + len; while (padlen--) *uc++ = fill; } else { if ( truncate ) result = left( width ); else result = *this; } return result; } /*! Returns a string of length \a width that contains the \a fill character followed by the string. If \a truncate is FALSE and the length of the string is more than \a width, then the returned string is a copy of the string. If \a truncate is TRUE and the length of the string is more than \a width, then the resulting string is truncated at position \a width. \code QString string( "apple" ); QString t = string.rightJustify( 8, '.' ); // t == "...apple" \endcode \sa leftJustify() */ QString QString::rightJustify( uint width, QChar fill, bool truncate ) const { QString result; int len = length(); int padlen = width - len; if ( padlen > 0 ) { result.setLength( len+padlen ); QChar* uc = result.d->unicode; while (padlen--) *uc++ = fill; if ( len ) memcpy( uc, unicode(), sizeof(QChar)*len ); } else { if ( truncate ) result = left( width ); else result = *this; } return result; } /*! Returns a lowercase copy of the string. \code QString string( "TROlltECH" ); str = string.lower(); // str == "trolltech" \endcode \sa upper() */ QString QString::lower() const { - QString s(*this); - int l=length(); - if ( l ) { - s.real_detach(); // could do this only when we find a change - register QChar *p=s.d->unicode; - if ( p ) { - while ( l-- ) { + int l = length(); + register QChar *p = d->unicode; + while ( l ) { + if ( *p != ::lower(*p) ) { + QString s( *this ); + s.real_detach(); + p = s.d->unicode + ( p - d->unicode ); + while ( l ) { *p = ::lower( *p ); + l--; p++; } + return s; } + l--; + p++; } - return s; + return *this; } /*! Returns an uppercase copy of the string. \code QString string( "TeXt" ); str = string.upper(); // t == "TEXT" \endcode \sa lower() */ QString QString::upper() const { - QString s(*this); - int l=length(); - if ( l ) { - s.real_detach(); // could do this only when we find a change - register QChar *p=s.d->unicode; - if ( p ) { - while ( l-- ) { + int l = length(); + register QChar *p = d->unicode; + while ( l ) { + if ( *p != ::upper(*p) ) { + QString s( *this ); + s.real_detach(); + p = s.d->unicode + ( p - d->unicode ); + while ( l ) { *p = ::upper( *p ); + l--; p++; } + return s; } + l--; + p++; } - return s; + return *this; } /*! Returns a string that has whitespace removed from the start and the end. Whitespace means any character for which QChar::isSpace() returns TRUE. This includes Unicode characters with decimal values 9 (TAB), 10 (LF), 11 (VT), 12 (FF), 13 (CR) and 32 (Space), and may also include other Unicode characters. \code QString string = " white space "; QString s = string.stripWhiteSpace(); // s == "white space" \endcode \sa simplifyWhiteSpace() */ QString QString::stripWhiteSpace() const { if ( isEmpty() ) // nothing to do return *this; register const QChar *s = unicode(); if ( !s->isSpace() && !s[length()-1].isSpace() ) return *this; int start = 0; int end = length() - 1; while ( start<=end && s[start].isSpace() ) // skip white space from start start++; if ( start <= end ) { // only white space while ( end && s[end].isSpace() ) // skip white space from end end--; } int l = end - start + 1; if ( l <= 0 ) return QString::fromLatin1(""); QString result( l, TRUE ); memcpy( result.d->unicode, &s[start], sizeof(QChar)*l ); result.d->len = l; return result; } /*! Returns a string that has whitespace removed from the start and the end, and which has each sequence of internal whitespace replaced with a single space. Whitespace means any character for which QChar::isSpace() returns TRUE. This includes Unicode characters with decimal values 9 (TAB), 10 (LF), 11 (VT), 12 (FF), 13 (CR), and 32 (Space). \code QString string = " lots\t of\nwhite space "; QString t = string.simplifyWhiteSpace(); // t == "lots of white space" \endcode \sa stripWhiteSpace() */ QString QString::simplifyWhiteSpace() const { if ( isEmpty() ) return *this; QString result; result.setLength( length() ); const QChar *from = unicode(); const QChar *fromend = from+length(); int outc=0; QChar *to = result.d->unicode; for (;;) { while ( from!=fromend && from->isSpace() ) from++; while ( from!=fromend && !from->isSpace() ) to[outc++] = *from++; if ( from!=fromend ) to[outc++] = ' '; else break; } if ( outc > 0 && to[outc-1] == ' ' ) outc--; result.truncate( outc ); return result; } /*! Inserts \a s into the string at position \a index. If \a index is beyond the end of the string, the string is extended with spaces to length \a index and \a s is then appended and returns a reference to the string. \code QString string( "I like fish" ); str = string.insert( 2, "don't " ); // str == "I don't like fish" \endcode \sa remove(), replace() */ QString &QString::insert( uint index, const QString &s ) { // the sub function takes care of &s == this case. return insert( index, s.unicode(), s.length() ); } /*! \overload - Inserts the character in \a s into the string at position \a index - \a len number of times and returns a reference to the string. + Inserts the first \a len characters in \a s into the string at + position \a index and returns a reference to the string. */ QString &QString::insert( uint index, const QChar* s, uint len ) { if ( len == 0 ) return *this; uint olen = length(); int nlen = olen + len; if ( s >= d->unicode && (uint)(s - d->unicode) < d->maxl ) { // Part of me - take a copy. QChar *tmp = QT_ALLOC_QCHAR_VEC( len ); memcpy(tmp,s,len*sizeof(QChar)); insert(index,tmp,len); QT_DELETE_QCHAR_VEC( tmp ); return *this; } if ( index >= olen ) { // insert after end of string setLength( len + index ); int n = index - olen; QChar* uc = d->unicode+olen; while (n--) *uc++ = ' '; memcpy( d->unicode+index, s, sizeof(QChar)*len ); } else { // normal insert setLength( nlen ); memmove( d->unicode + index + len, unicode() + index, sizeof(QChar) * (olen - index) ); memcpy( d->unicode + index, s, sizeof(QChar) * len ); } return *this; } /*! \overload Insert \a c into the string at position \a index and returns a reference to the string. If \a index is beyond the end of the string, the string is extended with spaces (ASCII 32) to length \a index and \a c is then appended. */ QString &QString::insert( uint index, QChar c ) // insert char { QString s( c ); return insert( index, s ); } /*! \fn QString& QString::insert( uint index, char c ) \overload Insert character \a c at position \a index. */ /*! \fn QString &QString::prepend( const QString &s ) Inserts \a s at the beginning of the string and returns a reference to the string. Equivalent to insert(0, \a s). \code QString string = "42"; string.prepend( "The answer is " ); // string == "The answer is 42" \endcode \sa insert() */ /*! \fn QString& QString::prepend( char ch ) \overload Inserts \a ch at the beginning of the string and returns a reference to the string. Equivalent to insert(0, \a ch). \sa insert() */ /*! \fn QString& QString::prepend( QChar ch ) \overload Inserts \a ch at the beginning of the string and returns a reference to the string. Equivalent to insert(0, \a ch). \sa insert() */ /*! \fn QString& QString::prepend( const QByteArray &s ) \overload Inserts \a s at the beginning of the string and returns a reference to the string. Equivalent to insert(0, \a s). \sa insert() */ +/*! \fn QString& QString::prepend( const std::string &s ) + \overload + + Inserts \a s at the beginning of the string and returns a reference to the string. + + Equivalent to insert(0, \a s). + + \sa insert() + */ + /*! \overload Inserts \a s at the beginning of the string and returns a reference to the string. Equivalent to insert(0, \a s). \sa insert() */ QString &QString::prepend( const char *s ) { return insert( 0, QString(s) ); } /*! Removes \a len characters from the string starting at position \a index, and returns a reference to the string. If \a index is beyond the length of the string, nothing happens. If \a index is within the string, but \a index + \a len is beyond the end of the string, the string is truncated at position \a index. \code QString string( "Montreal" ); string.remove( 1, 4 ); // string == "Meal" \endcode \sa insert(), replace() */ QString &QString::remove( uint index, uint len ) { uint olen = length(); if ( index >= olen ) { // range problems } else if ( index + len >= olen ) { // index ok setLength( index ); } else if ( len != 0 ) { real_detach(); memmove( d->unicode+index, d->unicode+index+len, sizeof(QChar)*(olen-index-len) ); setLength( olen-len ); } return *this; } /*! \overload Removes every occurrence of the character \a c in the string. Returns a reference to the string. This is the same as replace(\a c, ""). */ QString &QString::remove( QChar c ) { int i = 0; while ( i < (int) length() ) { if ( constref(i) == c ) { remove( i, 1 ); } else { i++; } } return *this; } /*! \overload \fn QString &QString::remove( char c ) Removes every occurrence of the character \a c in the string. Returns a reference to the string. This is the same as replace(\a c, ""). */ /*! \overload Removes every occurrence of \a str in the string. Returns a reference to the string. This is the same as replace(\a str, ""). */ QString &QString::remove( const QString & str ) { int index = 0; if ( !str.isEmpty() ) { while ( (index = find(str, index)) != -1 ) remove( index, str.length() ); } return *this; } /*! \overload @@ -15755,447 +15793,455 @@ QString &QString::replace( const QRegExp &rx, const QString &str ) Returns the position of the first match of \a rx or -1 if no match was found. \code QString string( "bananas" ); int i = string.find( QRegExp("an"), 0 ); // i == 1 \endcode \sa findRev() replace() contains() */ int QString::find( const QRegExp &rx, int index ) const { return rx.search( *this, index ); } /*! \overload Finds the first match of the regexp \a rx, starting at position \a index and searching backwards. If the index is -1, the search starts at the last character, if it is -2, at the next to last character and so on. (See findRev() for searching backwards.) Returns the position of the match or -1 if no match was found. \code QString string( "bananas" ); int i = string.findRev( QRegExp("an") ); // i == 3 \endcode \sa find() */ int QString::findRev( const QRegExp &rx, int index ) const { return rx.searchRev( *this, index ); } /*! \overload Returns the number of times the regexp, \a rx, matches in the string. This function counts overlapping matches, so in the example below, there are four instances of "ana" or "ama". \code QString str = "banana and panama"; QRegExp rxp = QRegExp( "a[nm]a", TRUE, FALSE ); int i = str.contains( rxp ); // i == 4 \endcode \sa find() findRev() */ int QString::contains( const QRegExp &rx ) const { int count = 0; int index = -1; int len = length(); while ( index < len - 1 ) { // count overlapping matches index = rx.search( *this, index + 1 ); if ( index == -1 ) break; count++; } return count; } #endif //QT_NO_REGEXP static bool ok_in_base( QChar c, int base ) { if ( base <= 10 ) return c.isDigit() && c.digitValue() < base; else return c.isDigit() || (c >= 'a' && c < char('a'+base-10)) || (c >= 'A' && c < char('A'+base-10)); } /*! Returns the string converted to a \c long value to the base \a base, which is 10 by default and must be between 2 and 36. If \a ok is not 0: if a conversion error occurs, \a *ok is set to FALSE; otherwise \a *ok is set to TRUE. \sa number() */ long QString::toLong( bool *ok, int base ) const { const QChar *p = unicode(); - long val = 0; + ulong val = 0; int l = length(); - const long max_mult = INT_MAX / base; + const ulong max_mult = LONG_MAX / base; bool is_ok = FALSE; int neg = 0; if ( !p ) goto bye; while ( l && p->isSpace() ) // skip leading space l--,p++; if ( !l ) goto bye; if ( *p == '-' ) { l--; p++; neg = 1; } else if ( *p == '+' ) { l--; p++; } // NOTE: toULong() code is similar if ( !l || !ok_in_base(*p,base) ) goto bye; while ( l && ok_in_base(*p,base) ) { l--; int dv; if ( p->isDigit() ) { dv = p->digitValue(); } else { if ( *p >= 'a' && *p <= 'z' ) dv = *p - 'a' + 10; else dv = *p - 'A' + 10; } if ( val > max_mult || - (val == max_mult && dv > (INT_MAX % base) + neg) ) + (val == max_mult && dv > (LONG_MAX % base) + neg) ) goto bye; val = base * val + dv; p++; } - if ( neg ) - val = -val; while ( l && p->isSpace() ) // skip trailing space - l--,p++; + l--, p++; if ( !l ) is_ok = TRUE; bye: if ( ok ) *ok = is_ok; - return is_ok ? val : 0; + return is_ok ? ( neg ? -( (long) val ) : (long) val ) : 0L; } /*! Returns the string converted to an \c {unsigned long} value to the base \a base, which is 10 by default and must be between 2 and 36. If \a ok is not 0: if a conversion error occurs, \a *ok is set to FALSE; otherwise \a *ok is set to TRUE. \sa number() */ ulong QString::toULong( bool *ok, int base ) const { const QChar *p = unicode(); ulong val = 0; int l = length(); - const ulong max_mult = UINT_MAX / base; + const ulong max_mult = ULONG_MAX / base; bool is_ok = FALSE; if ( !p ) goto bye; while ( l && p->isSpace() ) // skip leading space l--,p++; if ( !l ) goto bye; if ( *p == '+' ) l--,p++; // NOTE: toLong() code is similar if ( !l || !ok_in_base(*p,base) ) goto bye; while ( l && ok_in_base(*p,base) ) { l--; uint dv; if ( p->isDigit() ) { dv = p->digitValue(); } else { if ( *p >= 'a' && *p <= 'z' ) dv = *p - 'a' + 10; else dv = *p - 'A' + 10; } - if ( val > max_mult || (val == max_mult && dv > UINT_MAX % base) ) + if ( val > max_mult || (val == max_mult && dv > ULONG_MAX % base) ) goto bye; val = base * val + dv; p++; } while ( l && p->isSpace() ) // skip trailing space l--,p++; if ( !l ) is_ok = TRUE; bye: if ( ok ) *ok = is_ok; return is_ok ? val : 0; } /*! Returns the string converted to a \c short value to the base \a base, which is 10 by default and must be between 2 and 36. If \a ok is not 0: if a conversion error occurs, \a *ok is set to FALSE; otherwise \a *ok is set to TRUE. */ short QString::toShort( bool *ok, int base ) const { long v = toLong( ok, base ); - if ( ok && *ok && (v < -32768 || v > 32767) ) { + if ( ok && *ok && (v < SHRT_MIN || v > SHRT_MAX) ) { *ok = FALSE; v = 0; } return (short)v; } /*! Returns the string converted to an \c {unsigned short} value to the base \a base, which is 10 by default and must be between 2 and 36. If \a ok is not 0: if a conversion error occurs, \a *ok is set to FALSE; otherwise \a *ok is set to TRUE. */ ushort QString::toUShort( bool *ok, int base ) const { ulong v = toULong( ok, base ); - if ( ok && *ok && (v > 65535) ) { + if ( ok && *ok && (v > USHRT_MAX) ) { *ok = FALSE; v = 0; } return (ushort)v; } /*! Returns the string converted to an \c int value to the base \a base, which is 10 by default and must be between 2 and 36. If \a ok is not 0: if a conversion error occurs, \a *ok is set to FALSE; otherwise \a *ok is set to TRUE. \code QString str( "FF" ); bool ok; int hex = str.toInt( &ok, 16 ); // hex == 255, ok == TRUE int dec = str.toInt( &ok, 10 ); // dec == 0, ok == FALSE \endcode \sa number() */ int QString::toInt( bool *ok, int base ) const { - return (int)toLong( ok, base ); + long v = toLong( ok, base ); + if ( ok && *ok && (v < INT_MIN || v > INT_MAX) ) { + *ok = FALSE; + v = 0; + } + return (int)v; } /*! Returns the string converted to an \c{unsigned int} value to the base \a base, which is 10 by default and must be between 2 and 36. If \a ok is not 0: if a conversion error occurs, \a *ok is set to FALSE; otherwise \a *ok is set to TRUE. \sa number() */ uint QString::toUInt( bool *ok, int base ) const { - return (uint)toULong( ok, base ); + ulong v = toULong( ok, base ); + if ( ok && *ok && (v > UINT_MAX) ) { + *ok = FALSE; + v = 0; + } + return (uint)v; } /*! Returns the string converted to a \c double value. If \a ok is not 0: if a conversion error occurs, \a *ok is set to FALSE; otherwise \a *ok is set to TRUE. \code QString string( "1234.56" ); double a = string.toDouble(); // a == 1234.56 \endcode \sa number() */ double QString::toDouble( bool *ok ) const { char *end; const char *a = latin1(); double val = strtod( a ? a : "", &end ); if ( ok ) - *ok = ( a && *a && (end == 0 || (end - a) == (int)length()) ); + *ok = ( a && *a && (end == 0 || *end == '\0') ); return val; } /*! Returns the string converted to a \c float value. If \a ok is not 0: if a conversion error occurs, \a *ok is set to FALSE; otherwise \a *ok is set to TRUE. \sa number() */ float QString::toFloat( bool *ok ) const { return (float)toDouble( ok ); } /*! Sets the string to the printed value of \a n in base \a base and returns a reference to the string. The base is 10 by default and must be between 2 and 36. \code QString string; string = string.setNum( 1234 ); // string == "1234" \endcode */ QString &QString::setNum( long n, int base ) { #if defined(QT_CHECK_RANGE) if ( base < 2 || base > 36 ) { qWarning( "QString::setNum: Invalid base %d", base ); base = 10; } #endif char charbuf[65*sizeof(QChar)]; QChar *buf = (QChar*)charbuf; QChar *p = &buf[64]; int len = 0; bool neg; if ( n < 0 ) { neg = TRUE; - if ( n == INT_MIN ) { + if ( n == LONG_MIN ) { // Cannot always negate this special case QString s1, s2; - s1.setNum(n/base); - s2.setNum((-(n+base))%base); + s1.setNum(n/base, base ); + s2.setNum((-(n+base))%base, base ); *this = s1 + s2; return *this; } n = -n; } else { neg = FALSE; } do { *--p = "0123456789abcdefghijklmnopqrstuvwxyz"[((int)(n%base))]; n /= base; ++len; } while ( n ); if ( neg ) { *--p = '-'; ++len; } return setUnicode( p, len ); } /*! \overload Sets the string to the printed value of \a n in base \a base and returns a reference to the string. The base is 10 by default and must be between 2 and 36. */ QString &QString::setNum( ulong n, int base ) { #if defined(QT_CHECK_RANGE) if ( base < 2 || base > 36 ) { qWarning( "QString::setNum: Invalid base %d", base ); base = 10; } #endif char charbuf[65*sizeof(QChar)]; QChar *buf = (QChar*)charbuf; QChar *p = &buf[64]; int len = 0; do { *--p = "0123456789abcdefghijklmnopqrstuvwxyz"[((int)(n%base))]; n /= base; len++; } while ( n ); return setUnicode(p,len); } /*! \fn QString &QString::setNum( int n, int base ) \overload Sets the string to the printed value of \a n in base \a base and returns a reference to the string. The base is 10 by default and must be between 2 and 36. */ /*! \fn QString &QString::setNum( uint n, int base ) \overload Sets the string to the printed value of \a n in base \a base and returns a reference to the string. The base is 10 by default and must be between 2 and 36. */ /*! \fn QString &QString::setNum( short n, int base ) \overload Sets the string to the printed value of \a n in base \a base and returns a reference to the string. The base is 10 by default and must be between 2 and 36. */ /*! \fn QString &QString::setNum( ushort n, int base ) \overload Sets the string to the printed value of \a n in base \a base and returns a reference to the string. The base is 10 by default and must be between 2 and 36. */ /*! \overload Sets the string to the printed value of \a n, formatted in format @@ -16368,792 +16414,892 @@ void QString::setExpand( uint index, QChar c ) d->unicode[--index]=' '; } /*! \fn const char* QString::data() const \obsolete Returns a pointer to a '\0'-terminated classic C string. In Qt 1.x, this returned a char* allowing direct manipulation of the string as a sequence of bytes. In Qt 2.x where QString is a Unicode string, char* conversion constructs a temporary string, and hence direct character operations are meaningless. */ /*! \fn bool QString::operator!() const Returns TRUE if this is a null string; otherwise returns FALSE. \code QString name = getName(); if ( !name ) name = "Rodney"; \endcode Note that if you say \code QString name = getName(); if ( name ) doSomethingWith(name); \endcode It will call "operator const char*()", which is inefficent; you may wish to define the macro \c QT_NO_ASCII_CAST when writing code which you wish to remain Unicode-clean. When you want the above semantics, use: \code QString name = getName(); if ( !name.isNull() ) doSomethingWith(name); \endcode \sa isEmpty() */ /*! \fn QString& QString::append( const QString& str ) Appends \a str to the string and returns a reference to the result. \code string = "Test"; string.append( "ing" ); // string == "Testing" \endcode Equivalent to operator+=(). */ /*! \fn QString& QString::append( char ch ) \overload Appends character \a ch to the string and returns a reference to the result. Equivalent to operator+=(). */ /*! \fn QString& QString::append( QChar ch ) \overload Appends character \a ch to the string and returns a reference to the result. Equivalent to operator+=(). */ /*! \fn QString& QString::append( const QByteArray &str ) \overload Appends \a str to the string and returns a reference to the result. Equivalent to operator+=(). */ +/*! \fn QString& QString::append( const std::string &str ) + \overload + + Appends \a str to the string and returns a reference to the result. + + Equivalent to operator+=(). + */ + + /*! \fn QString& QString::append( const char *str ) \overload Appends \a str to the string and returns a reference to the result. Equivalent to operator+=(). */ /*! Appends \a str to the string and returns a reference to the string. */ QString& QString::operator+=( const QString &str ) { uint len1 = length(); uint len2 = str.length(); if ( len2 ) { setLength(len1+len2); memcpy( d->unicode+len1, str.unicode(), sizeof(QChar)*len2 ); } else if ( isNull() && !str.isNull() ) { // ## just for 1.x compat: *this = fromLatin1( "" ); } return *this; } /*! \overload Appends \a str to the string and returns a reference to the string. */ +#ifndef QT_NO_CAST_ASCII QString& QString::operator+=( const char *str ) { if ( str ) { +#ifndef QT_NO_TEXTCODEC + if ( QTextCodec::codecForCStrings() ) + return operator+=( fromAscii( str ) ); +#endif + uint len1 = length(); uint len2 = strlen( str ); if ( len2 ) { setLength(len1+len2); uint i = 0; while( i < len2 ) { d->unicode[len1+i] = str[i]; i++; } } else if ( isNull() ) { // ## just for 1.x compat: *this = fromLatin1( "" ); } } return *this; } +#endif /*! \overload Appends \a c to the string and returns a reference to the string. */ QString &QString::operator+=( QChar c ) { setLength(length()+1); d->unicode[length()-1] = c; return *this; } /*! \overload Appends \a c to the string and returns a reference to the string. */ QString &QString::operator+=( char c ) { +#ifndef QT_NO_TEXTCODEC + if ( QTextCodec::codecForCStrings() ) + return operator+=( fromAscii( &c, 1 ) ); +#endif setLength(length()+1); d->unicode[length()-1] = c; return *this; } /*! \fn QString &QString::operator+=( const QByteArray &str ) \overload Appends \a str to the string and returns a reference to the string. */ +/*! + \fn QString &QString::operator+=( const std::string &str ) + \overload + + Appends \a str to the string and returns a reference to the string. +*/ + /*! \fn char QChar::latin1() const - Returns a latin-1 copy of this character, if this character is in - the latin-1 character set. If not, this function returns 0. + Returns the Latin-1 value of this character, or 0 if it + cannot be represented in Latin-1. */ /*! - Returns a Latin-1 representation of the string. Note that the + Returns a Latin-1 representation of the string. The returned value is undefined if the string contains non-Latin-1 characters. If you want to convert strings into formats other than Unicode, see the QTextCodec classes. This function is mainly useful for boot-strapping legacy code to use Unicode. The result remains valid so long as one unmodified copy of the source string exists. - \sa utf8(), local8Bit() + \sa fromLatin1(), ascii(), utf8(), local8Bit() */ const char* QString::latin1() const { - if ( !d->ascii ) { - Q2HELPER(stat_get_ascii++) - Q2HELPER(stat_get_ascii_size+=d->len) - d->ascii = unicodeToAscii( d->unicode, d->len ); + if ( !d->ascii || !d->islatin1 ) { + d->ascii = unicodeToLatin1( d->unicode, d->len ); + d->islatin1 = TRUE; } return d->ascii; } /*! - \fn const char* QString::ascii() const - \obsolete + Returns an 8-bit ASCII representation of the string. - This function simply calls latin1() and returns the result. + If a codec has been set using QTextCodec::codecForCStrings(), + it is used to convert Unicode to 8-bit char. Otherwise, this function + does the same as latin1(). + + \sa fromAscii(), latin1(), utf8(), local8Bit() */ +const char* QString::ascii() const +{ +#ifndef QT_NO_TEXTCODEC + if ( QTextCodec::codecForCStrings() ) { + if ( !d->ascii || d->islatin1 ) { + QCString s = QTextCodec::codecForCStrings()->fromUnicode( *this ); + s.detach(); + d->ascii = s.data(); + d->islatin1 = FALSE; + s.resetRawData( s.data(), s.size() ); // we have stolen the data + } + return d->ascii; + } +#endif // QT_NO_TEXTCODEC + return latin1(); +} /*! - Returns the string encoded in UTF8 format. + Returns the string encoded in UTF-8 format. See QTextCodec for more diverse coding/decoding of Unicode strings. - \sa QString::fromUtf8(), local8Bit(), latin1() + \sa fromUtf8(), ascii(), latin1(), local8Bit() */ QCString QString::utf8() const { int l = length(); int rlen = l*3+1; QCString rstr(rlen); uchar* cursor = (uchar*)rstr.data(); const QChar *ch = d->unicode; for (int i=0; i<l; i++) { ushort u = ch->unicode(); if ( u < 0x80 ) { *cursor++ = (uchar)u; } else { if ( u < 0x0800 ) { *cursor++ = 0xc0 | ((uchar) (u >> 6)); } else { *cursor++ = 0xe0 | ((uchar) (u >> 12)); *cursor++ = 0x80 | ( ((uchar) (u >> 6)) & 0x3f); } *cursor++ = 0x80 | ((uchar) (u&0x3f)); } ch++; } rstr.truncate( cursor - (uchar*)rstr.data() ); return rstr; } /*! Returns the Unicode string decoded from the first \a len characters of \a utf8, ignoring the rest of \a utf8. If \a len is -1 then the length of \a utf8 is used. If \a len is bigger than the length of \a utf8 then it will use the length of \a utf8. \code QString str = QString::fromUtf8( "123456789", 5 ); // str == "12345" \endcode See QTextCodec for more diverse coding/decoding of Unicode strings. */ QString QString::fromUtf8( const char* utf8, int len ) { if ( !utf8 ) return QString::null; - if ( len < 0 ) len = qstrlen( utf8 ); + if ( len < 0 ) + len = strlen( utf8 ); QString result; result.setLength( len ); // worst case QChar *qch = (QChar *)result.unicode(); ushort uc = 0; int need = 0; for (int i=0; i<len; i++) { uchar ch = utf8[i]; if (need) { if ( (ch&0xc0) == 0x80 ) { uc = (uc << 6) | (ch & 0x3f); need--; if ( !need ) { *qch = uc; qch++; } } else { // error *qch = QChar::replacement; qch++; need = 0; } } else { if ( ch < 128 ) { *qch = ch; qch++; } else if ( (ch&0xe0) == 0xc0 ) { uc = ch &0x1f; need = 1; } else if ( (ch&0xf0) == 0xe0 ) { uc = ch &0x0f; need = 2; } } } result.truncate( qch - result.unicode() ); return result; } /*! Returns the Unicode string decoded from the first \a len - characters of \a chars, ignoring the rest of \a chars. If \a len - is -1 then the length of \a chars is used. If \a len is bigger - than the length of \a chars then it will use the length of \a - chars. + characters of \a ascii, ignoring the rest of \a ascii. If \a len + is -1 then the length of \a ascii is used. If \a len is bigger + than the length of \a ascii then it will use the length of \a + ascii. + + If a codec has been set using QTextCodec::codecForCStrings(), + it is used to convert Unicode to 8-bit char. Otherwise, this function + does the same as fromLatin1(). This is the same as the QString(const char*) constructor, but you can make that constructor invisible if you compile with the define \c QT_NO_CAST_ASCII, in which case you can explicitly create a - QString from Latin-1 text using this function. + QString from 8-bit ASCII text using this function. \code - QString str = QString::fromLatin1( "123456789", 5 ); + QString str = QString::fromAscii( "123456789", 5 ); // str == "12345" \endcode + */ +QString QString::fromAscii( const char* ascii, int len ) +{ +#ifndef QT_NO_TEXTCODEC + if ( QTextCodec::codecForCStrings() ) { + if ( !ascii ) + return QString::null; + if ( len < 0 ) + len = strlen( ascii ); + if ( len == 0 || *ascii == '\0' ) + return QString::fromLatin1( "" ); + return QTextCodec::codecForCStrings()->toUnicode( ascii, len ); + } +#endif + return fromLatin1( ascii, len ); +} + + +/*! + Returns the Unicode string decoded from the first \a len + characters of \a chars, ignoring the rest of \a chars. If \a len + is -1 then the length of \a chars is used. If \a len is bigger + than the length of \a chars then it will use the length of \a + chars. + + \sa fromAscii() */ QString QString::fromLatin1( const char* chars, int len ) { uint l; QChar *uc; if ( len < 0 ) len = -1; - uc = internalAsciiToUnicode( chars, &l, len ); + uc = internalLatin1ToUnicode( chars, &l, len ); return QString( new QStringData(uc, l, l), TRUE ); } /*! \fn const QChar* QString::unicode() const Returns the Unicode representation of the string. The result remains valid until the string is modified. */ /*! Returns the string encoded in a locale-specific format. On X11, this is the QTextCodec::codecForLocale(). On Windows, it is a - system-defined encoding. On Mac OS X, this always uses utf8 as the - encoding. + system-defined encoding. On Mac OS X, this always uses UTF-8 as + the encoding. See QTextCodec for more diverse coding/decoding of Unicode strings. - \sa QString::fromLocal8Bit(), latin1(), utf8() + \sa fromLocal8Bit(), ascii(), latin1(), utf8() */ - QCString QString::local8Bit() const { #ifdef QT_NO_TEXTCODEC return latin1(); #else #ifdef Q_WS_X11 QTextCodec* codec = QTextCodec::codecForLocale(); return codec ? codec->fromUnicode(*this) : QCString(latin1()); #endif #if defined( Q_WS_MACX ) return utf8(); #endif #if defined( Q_WS_MAC9 ) return QCString(latin1()); //I'm evil.. #endif #ifdef Q_WS_WIN return qt_winQString2MB( *this ); #endif #ifdef Q_WS_QWS - return utf8(); // ##### if there is ANY 8 bit format supported? + return utf8(); // ### if there is any 8 bit format supported? #endif #endif } /*! Returns the Unicode string decoded from the first \a len characters of \a local8Bit, ignoring the rest of \a local8Bit. If \a len is -1 then the length of \a local8Bit is used. If \a len is bigger than the length of \a local8Bit then it will use the length of \a local8Bit. \code QString str = QString::fromLocal8Bit( "123456789", 5 ); // str == "12345" \endcode \a local8Bit is assumed to be encoded in a locale-specific format. See QTextCodec for more diverse coding/decoding of Unicode strings. */ QString QString::fromLocal8Bit( const char* local8Bit, int len ) { #ifdef QT_NO_TEXTCODEC return fromLatin1( local8Bit, len ); #else if ( !local8Bit ) return QString::null; #ifdef Q_WS_X11 QTextCodec* codec = QTextCodec::codecForLocale(); - if ( len < 0 ) len = qstrlen(local8Bit); + if ( len < 0 ) + len = strlen( local8Bit ); return codec ? codec->toUnicode( local8Bit, len ) : fromLatin1( local8Bit, len ); #endif #if defined( Q_WS_MAC ) return fromUtf8(local8Bit,len); #endif // Should this be OS_WIN32? #ifdef Q_WS_WIN if ( len >= 0 ) { QCString s(local8Bit,len+1); return qt_winMB2QString(s); } return qt_winMB2QString( local8Bit ); #endif #ifdef Q_WS_QWS return fromUtf8(local8Bit,len); #endif #endif // QT_NO_TEXTCODEC } /*! \fn QString::operator const char *() const Returns latin1(). Be sure to see the warnings documented in the latin1() function. Note that for new code which you wish to be strictly Unicode-clean, you can define the macro \c QT_NO_ASCII_CAST when compiling your code to hide this function so that automatic casts are not done. This has the added advantage that you catch the programming error described in operator!(). */ +/*! + \fn QString::operator std::string() const + + Returns ascii(). +*/ + /*! Returns the QString as a zero terminated array of unsigned shorts if the string is not null; otherwise returns zero. The result remains valid so long as one unmodified copy of the source string exists. */ const unsigned short *QString::ucs2() const { if ( ! d->unicode ) return 0; unsigned int len = d->len; if ( d->maxl < len + 1 ) { // detach, grow or shrink - Q2HELPER(stat_copy_on_write++) - Q2HELPER(stat_copy_on_write_size += len) uint newMax = computeNewMax( len + 1 ); QChar* nd = QT_ALLOC_QCHAR_VEC( newMax ); if ( nd ) { if ( d->unicode ) memcpy( nd, d->unicode, sizeof(QChar)*len ); ((QString *)this)->deref(); ((QString *)this)->d = new QStringData( nd, len, newMax ); } } d->unicode[len] = 0; return (unsigned short *) d->unicode; } /*! Constructs a string that is a deep copy of \a str, interpreted as a UCS2 encoded, zero terminated, Unicode string. If \a str is 0, then a null string is created. \sa isNull() */ QString QString::fromUcs2( const unsigned short *str ) { if ( !str ) { return QString::null; } else { int length = 0; while( str[length] != 0 ) length++; QChar* uc = QT_ALLOC_QCHAR_VEC( length ); memcpy( uc, str, length*sizeof(QChar) ); return QString( new QStringData( uc, length, length ), TRUE ); } } /*! \fn QChar QString::at( uint ) const Returns the character at index \a i, or 0 if \a i is beyond the length of the string. \code const QString string( "abcdefgh" ); QChar ch = string.at( 4 ); // ch == 'e' \endcode If the QString is not const (i.e. const QString) or const& (i.e. const QString &), then the non-const overload of at() will be used instead. */ /*! \fn QChar QString::constref(uint i) const Returns the QChar at index \a i by value. Equivalent to at(\a i). \sa ref() */ /*! \fn QChar& QString::ref(uint i) Returns the QChar at index \a i by reference, expanding the string with QChar::null if necessary. The resulting reference can be assigned to, or otherwise used immediately, but becomes invalid once furher modifications are made to the string. \code QString string("ABCDEF"); QChar ch = string.ref( 3 ); // ch == 'D' \endcode \sa constref() */ /*! \fn QChar QString::operator[]( int ) const Returns the character at index \a i, or QChar::null if \a i is beyond the length of the string. If the QString is not const (i.e., const QString) or const\& (i.e., const QString\&), then the non-const overload of operator[] will be used instead. */ /*! \fn QCharRef QString::operator[]( int ) \overload The function returns a reference to the character at index \a i. The resulting reference can then be assigned to, or used immediately, but it will become invalid once further modifications are made to the original string. If \a i is beyond the length of the string then the string is expanded with QChar::nulls, so that the QCharRef references a valid (null) character in the string. The QCharRef internal class can be used much like a constant QChar, but if you assign to it, you change the original string (which will detach itself because of QString's copy-on-write semantics). You will get compilation errors if you try to use the result as anything but a QChar. */ /*! \fn QCharRef QString::at( uint i ) \overload The function returns a reference to the character at index \a i. The resulting reference can then be assigned to, or used immediately, but it will become invalid once further modifications are made to the original string. If \a i is beyond the length of the string then the string is expanded with QChar::null. */ /* Internal chunk of code to handle the uncommon cases of at() above. */ void QString::subat( uint i ) { uint olen = d->len; if ( i >= olen ) { setLength( i+1 ); // i is index; i+1 is needed length for ( uint j=olen; j<=i; j++ ) d->unicode[j] = QChar::null; } else { // Just be sure to detach real_detach(); } } /*! Resizes the string to \a len characters and copies \a unicode into the string. If \a unicode is 0, nothing is copied, but the string is still resized to \a len. If \a len is zero, then the string becomes a \link isNull() null\endlink string. \sa setLatin1(), isNull() */ QString& QString::setUnicode( const QChar *unicode, uint len ) { if ( len == 0 ) { // set to null string if ( d != shared_null ) { // beware of nullstring being set to nullstring deref(); d = shared_null ? shared_null : makeSharedNull(); d->ref(); } } else if ( d->count != 1 || len > d->maxl || ( len * 4 < d->maxl && d->maxl > 4 ) ) { // detach, grown or shrink - Q2HELPER(stat_copy_on_write++) - Q2HELPER(stat_copy_on_write_size+=d->len) uint newMax = computeNewMax( len ); QChar* nd = QT_ALLOC_QCHAR_VEC( newMax ); if ( unicode ) memcpy( nd, unicode, sizeof(QChar)*len ); deref(); d = new QStringData( nd, len, newMax ); } else { d->len = len; d->setDirty(); if ( unicode ) memcpy( d->unicode, unicode, sizeof(QChar)*len ); } return *this; } /*! Resizes the string to \a len characters and copies \a unicode_as_ushorts into the string (on some X11 client platforms this will involve a byte-swapping pass). If \a unicode_as_ushorts is 0, nothing is copied, but the string is still resized to \a len. If \a len is zero, the string becomes a \link isNull() null\endlink string. \sa setLatin1(), isNull() */ QString& QString::setUnicodeCodes( const ushort* unicode_as_ushorts, uint len ) { return setUnicode((const QChar*)unicode_as_ushorts, len); } /*! + Sets this string to \a str, interpreted as a classic 8-bit ASCII C + string. If \a len is -1 (the default), then it is set to + strlen(str). + + If \a str is 0 a null string is created. If \a str is "", an empty + string is created. + + \sa isNull(), isEmpty() +*/ + +QString &QString::setAscii( const char *str, int len ) +{ +#ifndef QT_NO_TEXTCODEC + if ( QTextCodec::codecForCStrings() ) { + *this = QString::fromAscii( str, len ); + return *this; + } +#endif // QT_NO_TEXTCODEC + return setLatin1( str, len ); +} + +/*! Sets this string to \a str, interpreted as a classic Latin1 C string. If \a len is -1 (the default), then it is set to strlen(str). If \a str is 0 a null string is created. If \a str is "", an empty string is created. \sa isNull(), isEmpty() */ QString &QString::setLatin1( const char *str, int len ) { if ( str == 0 ) return setUnicode(0,0); if ( len < 0 ) - len = qstrlen(str); + len = strlen( str ); if ( len == 0 ) { // won't make a null string *this = QString::fromLatin1( "" ); } else { setUnicode( 0, len ); // resize but not copy QChar *p = d->unicode; while ( len-- ) *p++ = *str++; } return *this; } /*! \internal */ void QString::checkSimpleText() const { QChar *p = d->unicode; QChar *end = p + d->len; - d->simpletext = 1; while( p < end ) { ushort uc = p->unicode(); // sort out regions of complex text formatting if ( uc > 0x058f && ( uc < 0x1100 || uc > 0xfb0f ) ) { - d->simpletext = 0; + d->issimpletext = FALSE; return; } p++; } + d->issimpletext = TRUE; } /*! \fn bool QString::simpleText() const \internal */ /*! \internal */ bool QString::isRightToLeft() const { int len = length(); QChar *p = d->unicode; while( len-- ) { switch( ::direction( *p ) ) { case QChar::DirL: case QChar::DirLRO: case QChar::DirLRE: return FALSE; case QChar::DirR: case QChar::DirAL: case QChar::DirRLO: case QChar::DirRLE: return TRUE; default: break; } ++p; } return FALSE; } /*! \fn int QString::compare( const QString & s1, const QString & s2 ) Lexically compares \a s1 with \a s2 and returns an integer less than, equal to, or greater than zero if \a s1 is less than, equal to, or greater than \a s2. The comparison is based exclusively on the numeric Unicode values of the characters and is very fast, but is not what a human would expect. Consider sorting user-interface strings with QString::localeAwareCompare(). \code int a = QString::compare( "def", "abc" ); // a > 0 int b = QString::compare( "abc", "def" ); // b < 0 int c = QString::compare(" abc", "abc" ); // c == 0 \endcode */ /*! \overload Lexically compares this string with \a s and returns an integer less than, equal to, or greater than zero if it is less than, equal to, or greater than \a s. */ int QString::compare( const QString& s ) const { return ucstrcmp( *this, s ); } /*! \fn int QString::localeAwareCompare( const QString & s1, const QString & s2 ) Compares \a s1 with \a s2 and returns an integer less than, equal to, or greater than zero if \a s1 is less than, equal to, or greater than \a s2. The comparison is performed in a locale- and also platform-dependent manner. Use this function to present sorted lists of strings to the user. \sa QString::compare() QTextCodec::locale() */ /*! \overload Compares this string with \a s. */ #if !defined(CSTR_LESS_THAN) #define CSTR_LESS_THAN 1 #define CSTR_EQUAL 2 #define CSTR_GREATER_THAN 3 #endif int QString::localeAwareCompare( const QString& s ) const { // do the right thing for null and empty if ( isEmpty() || s.isEmpty() ) return compare( s ); |