| -rw-r--r-- | qmake/tools/qcstring.cpp | 107 |
1 files changed, 72 insertions, 35 deletions
diff --git a/qmake/tools/qcstring.cpp b/qmake/tools/qcstring.cpp index cf1b853..4651b97 100644 --- a/qmake/tools/qcstring.cpp +++ b/qmake/tools/qcstring.cpp @@ -1,2474 +1,2511 @@ /**************************************************************************** ** $Id$ ** ** Implementation of extended char array operations, and QByteArray and ** QCString classes ** ** Created : 920722 ** ** Copyright (C) 1992-2000 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. ** **********************************************************************/ #include "qstring.h" #include "qregexp.h" #include "qdatastream.h" #ifdef QT_THREAD_SUPPORT # include <private/qmutexpool_p.h> #endif // QT_THREAD_SUPPORT #include <stdio.h> #include <stdarg.h> #include <stdlib.h> #include <ctype.h> #include <limits.h> #ifndef QT_NO_COMPRESS #include "../3rdparty/zlib/zlib.h" #endif /***************************************************************************** Safe and portable C string functions; extensions to standard string.h *****************************************************************************/ /*! \relates QCString This function is normally part of the C library. Qt implements memmove() for platforms that do not provide it. memmove() copies \a len bytes from \a src into \a dst. The data is copied correctly even if \a src and \a dst overlap. */ void *qmemmove( void *dst, const void *src, uint len ) { register char *d; register char *s; if ( dst > src ) { d = (char *)dst + len - 1; s = (char *)src + len - 1; while ( len-- ) *d-- = *s--; } else if ( dst < src ) { d = (char *)dst; s = (char *)src; while ( len-- ) *d++ = *s++; } return dst; } /*! \relates QCString Returns a duplicate string. Allocates space for a copy of \a src, copies it, and returns a pointer to the copy. If \a src is 0, it immediately returns 0. The returned string must be deleted using \c delete[]. */ char *qstrdup( const char *src ) { if ( !src ) return 0; char *dst = new char[strlen(src)+1]; Q_CHECK_PTR( dst ); return strcpy( dst, src ); } /*! \fn char *qstrcpy( char *dst, const char *src ) \relates QCString A safe strcpy() function. Copies all characters up to and including the '\0' from \a src into \a dst and returns a pointer to \a dst. */ /*! \relates QCString A safe strncpy() function. Copies at most \a len bytes from \a src (stopping at \a len or the terminating '\0' whichever comes first) into \a dst and returns a pointer to \a dst. Guarantees that \a dst is '\0'-terminated. If \a src or \a dst is 0, returns 0 immediately. \sa qstrcpy() */ char *qstrncpy( char *dst, const char *src, uint len ) { if ( !src || !dst ) return 0; strncpy( dst, src, len ); if ( len > 0 ) dst[len-1] = '\0'; return dst; } /*! + \fn uint qstrlen( const char *str ); + + \relates QCString + + A safe strlen function. + + Returns the number of characters that precede the terminating '\0'. + or 0 if \a str is 0. +*/ + +/*! \fn int qstrcmp( const char *str1, const char *str2 ); \relates QCString A safe strcmp() function. Compares \a str1 and \a str2. Returns a negative value if \a str1 is less than \a str2, 0 if \a str1 is equal to \a str2 or a positive value if \a str1 is greater than \a str2. Special case I: Returns 0 if \a str1 and \a str2 are both 0. Special case II: Returns a random nonzero value if \a str1 is 0 or \a str2 is 0 (but not both). \sa qstrncmp() qstricmp() qstrnicmp() \link #asciinotion Note on character comparisons \endlink */ /*! \fn int qstrncmp( const char *str1, const char *str2, uint len ); \relates QCString A safe strncmp() function. Compares at most \a len bytes of \a str1 and \a str2. Returns a negative value if \a str1 is less than \a str2, 0 if \a str1 is equal to \a str2 or a positive value if \a str1 is greater than \a str2. Special case I: Returns 0 if \a str1 and \a str2 are both 0. Special case II: Returns a random nonzero value if \a str1 is 0 or \a str2 is 0 (but not both). \sa qstrcmp(), qstricmp(), qstrnicmp() \link #asciinotion Note on character comparisons \endlink */ /*! \relates QCString A safe stricmp() function. Compares \a str1 and \a str2 ignoring the case. Returns a negative value if \a str1 is less than \a str2, 0 if \a str1 is equal to \a str2 or a positive value if \a str1 is greater than \a str2. Special case I: Returns 0 if \a str1 and \a str2 are both 0. Special case II: Returns a random nonzero value if \a str1 is 0 or \a str2 is 0 (but not both). \sa qstrcmp(), qstrncmp(), qstrnicmp() \link #asciinotion Note on character comparisons \endlink */ int qstricmp( const char *str1, const char *str2 ) { register const uchar *s1 = (const uchar *)str1; register const uchar *s2 = (const uchar *)str2; int res; uchar c; if ( !s1 || !s2 ) return s1 ? 1 : ( s2 ? -1 : 0 ); for ( ; !(res = (c=tolower(*s1)) - tolower(*s2)); s1++, s2++ ) if ( !c ) // strings are equal break; return res; } /*! \relates QCString A safe strnicmp() function. Compares at most \a len bytes of \a str1 and \a str2 ignoring the case. Returns a negative value if \a str1 is less than \a str2, 0 if \a str1 is equal to \a str2 or a positive value if \a str1 is greater than \a str2. Special case I: Returns 0 if \a str1 and \a str2 are both 0. Special case II: Returns a random nonzero value if \a str1 is 0 or \a str2 is 0 (but not both). \sa qstrcmp(), qstrncmp() qstricmp() \link #asciinotion Note on character comparisons \endlink */ int qstrnicmp( const char *str1, const char *str2, uint len ) { register const uchar *s1 = (const uchar *)str1; register const uchar *s2 = (const uchar *)str2; int res; uchar c; if ( !s1 || !s2 ) return s1 ? 1 : ( s2 ? -1 : 0 ); for ( ; len--; s1++, s2++ ) { if ( (res = (c=tolower(*s1)) - tolower(*s2)) ) return res; if ( !c ) // strings are equal break; } return 0; } static Q_UINT16 crc_tbl[16]; static bool crc_tbl_init = FALSE; static void createCRC16Table() // build CRC16 lookup table { register uint i; register uint j; uint v0, v1, v2, v3; for ( i = 0; i < 16; i++ ) { v0 = i & 1; v1 = ( i >> 1 ) & 1; v2 = ( i >> 2 ) & 1; v3 = ( i >> 3 ) & 1; j = 0; #undef SET_BIT #define SET_BIT(x, b, v) (x) |= (v) << (b) SET_BIT( j, 0, v0 ); SET_BIT( j, 7, v0 ); SET_BIT( j, 12, v0 ); SET_BIT( j, 1, v1 ); SET_BIT( j, 8, v1 ); SET_BIT( j, 13, v1 ); SET_BIT( j, 2, v2 ); SET_BIT( j, 9, v2 ); SET_BIT( j, 14, v2 ); SET_BIT( j, 3, v3 ); SET_BIT( j, 10, v3 ); SET_BIT( j, 15, v3 ); crc_tbl[i] = j; } } /*! \relates QMemArray Returns the CRC-16 checksum of \a len bytes starting at \a data. The checksum is independent of the byte order (endianness). */ Q_UINT16 qChecksum( const char *data, uint len ) { if ( !crc_tbl_init ) { // create lookup table #ifdef QT_THREAD_SUPPORT - QMutexLocker locker( qt_global_mutexpool->get( &crc_tbl_init ) ); + QMutexLocker locker( qt_global_mutexpool ? + qt_global_mutexpool->get( &crc_tbl_init ) : 0 ); #endif // QT_THREAD_SUPPORT if ( !crc_tbl_init ) { createCRC16Table(); crc_tbl_init = TRUE; } } register Q_UINT16 crc = 0xffff; uchar c; uchar *p = (uchar *)data; while ( len-- ) { c = *p++; crc = ( (crc >> 4) & 0x0fff ) ^ crc_tbl[((crc ^ c) & 15)]; c >>= 4; crc = ( (crc >> 4) & 0x0fff ) ^ crc_tbl[((crc ^ c) & 15)]; } return ~crc & 0xffff; } -/*! \fn QByteArray qCompress( const QByteArray& data) - \relates QByteArray - \overload +/*! + \fn QByteArray qCompress( const QByteArray& data ) + + \relates QByteArray + + Compresses the array \a data and returns the compressed byte + array. + + \sa qUncompress() */ /*! - \relates QByteArray + \relates QByteArray - Compresses the array \a data which is \a nbytes long and returns the - compressed byte array. + \overload - \sa qUncompress() + Compresses the array \a data which is \a nbytes long and returns the + compressed byte array. */ #ifndef QT_NO_COMPRESS QByteArray qCompress( const uchar* data, int nbytes ) { if ( nbytes == 0 ) { QByteArray tmp( 4 ); tmp.fill( 0 ); return tmp; } if ( !data ) { #if defined(QT_CHECK_RANGE) qWarning( "qCompress: data is NULL." ); #endif return QByteArray(); } ulong len = nbytes * 2; QByteArray bazip; int res; do { bazip.resize( len + 4 ); res = ::compress( (uchar*)bazip.data()+4, &len, (uchar*)data, nbytes ); switch ( res ) { case Z_OK: bazip.resize( len + 4 ); bazip[0] = ( nbytes & 0xff000000 ) >> 24; bazip[1] = ( nbytes & 0x00ff0000 ) >> 16; bazip[2] = ( nbytes & 0x0000ff00 ) >> 8; bazip[3] = ( nbytes & 0x000000ff ); break; case Z_MEM_ERROR: #if defined(QT_CHECK_RANGE) qWarning( "qCompress: Z_MEM_ERROR: Not enough memory." ); #endif bazip.resize( 0 ); break; case Z_BUF_ERROR: len *= 2; break; } } while ( res == Z_BUF_ERROR ); return bazip; } #endif -/*! \fn QByteArray qUncompress( const QByteArray& data ) - \relates QByteArray - \overload +/*! + \fn QByteArray qUncompress( const QByteArray& data ) + + \relates QByteArray + + Uncompresses the array \a data and returns the uncompressed byte + array. + + Returns an empty QByteArray if the input data was corrupt. + \omit + ADD THE FOLLOWING FOR Qt 4.0 + This function will uncompress data compressed with qCompress() + from this and any earlier Qt version, back to Qt 3.1 when this + feature was added. + \endomit + + \sa qCompress() */ /*! - \relates QByteArray - - Uncompresses the array \a data which is \a nbytes long and returns - the uncompressed byte array. + \relates QByteArray - Returns an empty QByteArray if the input data was corrupt. + \overload - \sa qCompress() + Uncompresses the array \a data which is \a nbytes long and returns + the uncompressed byte array. */ #ifndef QT_NO_COMPRESS QByteArray qUncompress( const uchar* data, int nbytes ) { if ( !data ) { #if defined(QT_CHECK_RANGE) qWarning( "qUncompress: data is NULL." ); #endif return QByteArray(); } if ( nbytes <= 4 ) { #if defined(QT_CHECK_RANGE) if ( nbytes < 4 || ( data[0]!=0 || data[1]!=0 || data[2]!=0 || data[3]!=0 ) ) qWarning( "qUncompress: Input data is corrupted." ); #endif return QByteArray(); } ulong expectedSize = ( data[0] << 24 ) | ( data[1] << 16 ) | ( data[2] << 8 ) | data[3]; ulong len = QMAX( expectedSize, 1 ); QByteArray baunzip; int res; do { baunzip.resize( len ); res = ::uncompress( (uchar*)baunzip.data(), &len, (uchar*)data+4, nbytes-4 ); switch ( res ) { case Z_OK: if ( len != baunzip.size() ) baunzip.resize( len ); break; case Z_MEM_ERROR: #if defined(QT_CHECK_RANGE) qWarning( "qUncompress: Z_MEM_ERROR: Not enough memory." ); #endif break; case Z_BUF_ERROR: len *= 2; break; case Z_DATA_ERROR: #if defined(QT_CHECK_RANGE) qWarning( "qUncompress: Z_DATA_ERROR: Input data is corrupted." ); #endif break; } } while ( res == Z_BUF_ERROR ); if ( res != Z_OK ) baunzip = QByteArray(); return baunzip; } #endif /***************************************************************************** QByteArray documentation *****************************************************************************/ /*! \class QByteArray \reentrant \brief The QByteArray class provides an array of bytes. \ingroup collection \ingroup tools The QByteArray class provides an explicitly shared array of bytes. It is useful for manipulating memory areas with custom data. QByteArray is implemented as a QMemArray\<char\>. See the \l QMemArray documentation for further information. */ /*! \fn QByteArray::QByteArray() Constructs an empty QByteArray. */ /*! \fn QByteArray::QByteArray( int size ) Constructs a QByteArray of size \a size. */ /***************************************************************************** QByteArray stream functions *****************************************************************************/ /*! \relates QMemArray Writes byte array \a a to the stream \a s and returns a reference to the stream. \sa \link datastreamformat.html Format of the QDataStream operators \endlink */ #ifndef QT_NO_DATASTREAM QDataStream &operator<<( QDataStream &s, const QByteArray &a ) { return s.writeBytes( a.data(), a.size() ); } /*! \relates QMemArray Reads a byte array into \a a from the stream \a s and returns a reference to the stream. \sa \link datastreamformat.html Format of the QDataStream operators \endlink */ QDataStream &operator>>( QDataStream &s, QByteArray &a ) { Q_UINT32 len; s >> len; // read size of array if ( len == 0 || s.eof() ) { // end of file reached a.resize( 0 ); return s; } if ( !a.resize( (uint)len ) ) { // resize array #if defined(QT_CHECK_NULL) qWarning( "QDataStream: Not enough memory to read QByteArray" ); #endif len = 0; } if ( len > 0 ) // not null array s.readRawBytes( a.data(), (uint)len ); return s; } #endif //QT_NO_DATASTREAM /***************************************************************************** QCString member functions *****************************************************************************/ /*! \class QCString qcstring.h \reentrant \brief The QCString class provides an abstraction of the classic C zero-terminated char array (char *). \ingroup text \ingroup collection \ingroup tools \ingroup shared QCString inherits QByteArray, which is defined as QMemArray\<char\>. Since QCString is a QMemArray, it uses \link shclass.html explicit sharing\endlink with a reference count. QCString tries to behave like a more convenient \c{const char *}. The price of doing this is that some algorithms will perform badly. For example, append() is O(length()) since it scans for a null terminator. Although you might use QCString for text that is never exposed to the user, for most purposes, and especially for user-visible text, you should use QString. QString provides implicit sharing, Unicode and other internationalization support, and is well optimized. Note that for the QCString methods that take a \c{const char *} parameter the \c{const char *} must either be 0 (null) or not-null and '\0' (NUL byte) terminated; otherwise the results are undefined. A QCString that has not been assigned to anything is \e null, i.e. both the length and the data pointer is 0. A QCString that references the empty string ("", a single '\0' char) is \e empty. Both null and empty QCStrings are legal parameters to the methods. Assigning \c{const char *} 0 to QCString produces a null QCString. The length() function returns the length of the string; resize() resizes the string and truncate() truncates the string. A string can be filled with a character using fill(). Strings can be left or right padded with characters using leftJustify() and rightJustify(). Characters, strings and regular expressions can be searched for using find() and findRev(), and counted using contains(). Strings and characters can be inserted with insert() and appended with append(). A string can be prepended with prepend(). Characters can be removed from the string with remove() and replaced with replace(). Portions of a string can be extracted using left(), right() and mid(). Whitespace can be removed using stripWhiteSpace() and simplifyWhiteSpace(). Strings can be converted to uppercase or lowercase with upper() and lower() respectively. Strings that contain numbers can be converted to numbers with toShort(), toInt(), toLong(), toULong(), toFloat() and toDouble(). Numbers can be converted to strings with setNum(). Many operators are overloaded to work with QCStrings. QCString also supports some more obscure functions, e.g. sprintf(), setStr() and setExpand(). \target asciinotion \sidebar Note on Character Comparisons In QCString the notion of uppercase and lowercase and of which character is greater than or less than another character is locale dependent. This affects functions which support a case insensitive option or which compare or lowercase or uppercase their arguments. Case insensitive operations and comparisons will be accurate if both strings contain only ASCII characters. (If \c $LC_CTYPE is set, most Unix systems do "the right thing".) Functions that this affects include contains(), find(), findRev(), \l operator<(), \l operator<=(), \l operator>(), \l operator>=(), lower() and upper(). This issue does not apply to \l{QString}s since they represent characters using Unicode. \endsidebar Performance note: The QCString methods for QRegExp searching are implemented by converting the QCString to a QString and performing the search on that. This implies a deep copy of the QCString data. If you are going to perform many QRegExp searches on a large QCString, you will get better performance by converting the QCString to a QString yourself, and then searching in the QString. */ /*! \fn QCString::QCString() Constructs a null string. \sa isNull() */ /*! \fn QCString::QCString( const QCString &s ) Constructs a shallow copy \a s. \sa assign() */ /*! Constructs a string with room for \a size characters, including the '\0'-terminator. Makes a null string if \a size == 0. If \a size \> 0, then the first and last characters in the string are initialized to '\0'. All other characters are uninitialized. \sa resize(), isNull() */ QCString::QCString( int size ) : QByteArray( size ) { if ( size > 0 ) { *data() = '\0'; // set terminator *(data()+(size-1)) = '\0'; } } /*! Constructs a string that is a deep copy of \a str. If \a str is 0 a null string is created. \sa isNull() */ QCString::QCString( const char *str ) { duplicate( str, qstrlen(str) + 1 ); } /*! Constructs a string that is a deep copy of \a str. The copy will be at most \a maxsize bytes long including the '\0'-terminator. Example: \code QCString str( "helloworld", 6 ); // assigns "hello" to str \endcode If \a str contains a 0 byte within the first \a maxsize bytes, the resulting QCString will be terminated by this 0. If \a str is 0 a null string is created. \sa isNull() */ QCString::QCString( const char *str, uint maxsize ) { if ( str == 0 ) return; uint len; // index of first '\0' for ( len = 0; len < maxsize - 1; len++ ) { if ( str[len] == '\0' ) break; } QByteArray::resize( len + 1 ); memcpy( data(), str, len ); data()[len] = 0; } /*! \reimp */ QCString::~QCString() { } /*! \fn QCString &QCString::operator=( const QCString &s ) Assigns a shallow copy of \a s to this string and returns a reference to this string. */ /*! \overload QCString &QCString::operator=( const char *str ) Assigns a deep copy of \a str to this string and returns a reference to this string. If \a str is 0 a null string is created. \sa isNull() */ /*! \fn bool QCString::isNull() const Returns TRUE if the string is null, i.e. if data() == 0; otherwise returns FALSE. A null string is also an empty string. Example: \code QCString a; // a.data() == 0, a.size() == 0, a.length() == 0 QCString b == ""; // b.data() == "", b.size() == 1, b.length() == 0 a.isNull(); // TRUE because a.data() == 0 a.isEmpty(); // TRUE because a.length() == 0 b.isNull(); // FALSE because b.data() == "" b.isEmpty(); // TRUE because b.length() == 0 \endcode \sa isEmpty(), length(), size() */ /*! \fn bool QCString::isEmpty() const Returns TRUE if the string is empty, i.e. if length() == 0; otherwise returns FALSE. An empty string is not always a null string. See example in isNull(). \sa isNull(), length(), size() */ /*! \fn uint QCString::length() const Returns the length of the string, excluding the '\0'-terminator. Equivalent to calling \c strlen(data()). Null strings and empty strings have zero length. \sa size(), isNull(), isEmpty() */ /*! \fn bool QCString::truncate( uint pos ) Truncates the string at position \a pos. Equivalent to calling \c resize(pos+1). Example: \code QCString s = "truncate this string"; s.truncate( 5 ); // s == "trunc" \endcode \sa resize() */ /*! Extends or shrinks the string to \a len bytes, including the '\0'-terminator. A '\0'-terminator is set at position \c{len - 1} unless \c{len == 0}. Example: \code QCString s = "resize this string"; s.resize( 7 ); // s == "resize" \endcode \sa truncate() */ bool QCString::resize( uint len ) { detach(); uint wasNull = isNull(); if ( !QByteArray::resize(len) ) return FALSE; if ( len ) data()[len - 1] = '\0'; if ( len > 0 && wasNull ) data()[0] = '\0'; return TRUE; } /*! Implemented as a call to the native vsprintf() (see the manual for your C library). If the string is shorter than 256 characters, this sprintf() calls resize(256) to decrease the chance of memory corruption. The string is resized back to its actual length before sprintf() returns. Example: \code QCString s; s.sprintf( "%d - %s", 1, "first" ); // result < 256 chars QCString big( 25000 ); // very long string big.sprintf( "%d - %s", 2, longString ); // result < 25000 chars \endcode \warning All vsprintf() implementations will write past the end of the target string (*this) if the \a format specification and arguments happen to be longer than the target string, and some will also fail if the target string is longer than some arbitrary implementation limit. Giving user-supplied arguments to sprintf() is risky: Sooner or later someone will paste a huge line into your application. */ QCString &QCString::sprintf( const char *format, ... ) { detach(); va_list ap; va_start( ap, format ); if ( size() < 256 ) QByteArray::resize( 256 ); // make string big enough vsprintf( data(), format, ap ); resize( qstrlen(data()) + 1 ); // truncate va_end( ap ); return *this; } /*! Fills the string with \a len bytes of character \a c, followed by a '\0'-terminator. If \a len is negative, then the current string length is used. Returns FALSE is \a len is nonnegative and there is not enough memory to resize the string; otherwise returns TRUE. */ bool QCString::fill( char c, int len ) { detach(); if ( len < 0 ) len = length(); if ( !QByteArray::fill(c,len+1) ) return FALSE; *(data()+len) = '\0'; return TRUE; } /*! \fn QCString QCString::copy() const Returns a deep copy of this string. \sa detach() */ /*! Finds the first occurrence of the character \a c, starting at position \a index. The search is case sensitive if \a cs is TRUE, or case insensitive if \a cs is FALSE. Returns the position of \a c, or -1 if \a c could not be found. \sa \link #asciinotion Note on character comparisons \endlink */ int QCString::find( char c, int index, bool cs ) const { if ( (uint)index >= size() ) // index outside string return -1; register const char *d; if ( cs ) { // case sensitive d = strchr( data()+index, c ); } else { d = data()+index; c = tolower( (uchar) c ); while ( *d && tolower((uchar) *d) != c ) d++; if ( !*d && c ) // not found d = 0; } return d ? (int)(d - data()) : -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. The search is case sensitive if \a cs is TRUE, or case insensitive if \a cs is FALSE. Returns the position of \a str, or -1 if \a str could not be found. \sa \link #asciinotion Note on character comparisons \endlink */ int QCString::find( const char *str, int index, bool cs ) const { + return find( str, index, cs, length() ); +} + +int QCString::find( const char *str, int index, bool cs, uint l ) const +{ if ( (uint)index >= size() ) return -1; if ( !str ) return -1; if ( !*str ) return index; - const uint l = length(); const uint sl = qstrlen( str ); if ( sl + index > l ) return -1; if ( sl == 1 ) return find( *str, index, cs ); /* See QString::find() for details. */ const char* needle = str; const char* haystack = data() + index; const char* end = data() + (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] ); hashHaystack = ((hashHaystack<<1) + haystack[i] ); } hashHaystack -= *(haystack+sl_minus_1); while ( haystack <= end ) { hashHaystack += *(haystack+sl_minus_1); if ( hashHaystack == hashNeedle && *needle == *haystack && qstrncmp( needle, haystack, sl ) == 0 ) return haystack - data(); REHASH( *haystack ); ++haystack; } } else { for ( i = 0; i < sl; ++i ) { hashNeedle = ((hashNeedle<<1) + tolower( needle[i] ) ); hashHaystack = ((hashHaystack<<1) + tolower( haystack[i] ) ); } hashHaystack -= tolower(*(haystack+sl_minus_1)); while ( haystack <= end ) { hashHaystack += tolower(*(haystack+sl_minus_1)); if ( hashHaystack == hashNeedle && qstrnicmp( needle, haystack, sl ) == 0 ) return haystack - data(); REHASH( tolower(*haystack) ); ++haystack; } } return -1; } /*! Finds the first occurrence of the character \a c, starting at position \a index and searching backwards. The search is case sensitive if \a cs is TRUE, or case insensitive if \a cs is FALSE. Returns the position of \a c, or -1 if \a c could not be found. \sa \link #asciinotion Note on character comparisons \endlink */ int QCString::findRev( char c, int index, bool cs ) const { register const char *b = data(); register const char *d; if ( index < 0 ) index = length(); if ( (uint)index >= size() ) return -1; d = b + index; if ( cs ) { while ( d >= b && *d != c ) d--; } else { c = tolower( (uchar) c ); while ( d >= b && tolower((uchar) *d) != c ) d--; } return d >= b ? (int)(d - b) : -1; } /*! \overload Finds the first occurrence of the string \a str, starting at position \a index and searching backwards. The search is case sensitive if \a cs is TRUE, or case insensitive if \a cs is FALSE. Returns the position of \a str, or -1 if \a str could not be found. \sa \link #asciinotion Note on character comparisons \endlink */ int QCString::findRev( const char *str, int index, bool cs ) const { /* See QString::find() for explanations. */ const uint sl = qstrlen( str ); const uint l = length(); int delta = l-sl; if ( index < 0 ) index = delta; if ( index < 0 || index > (int)l ) return -1; if ( index > delta ) index = delta; if ( sl == 1 ) return findRev( *str, index, cs ); const char* needle = str; const char* haystack = data() + index; const char* end = data(); const uint sl_minus_1 = sl-1; const char* n = needle+sl_minus_1; const char* h = haystack+sl_minus_1; uint hashNeedle = 0, hashHaystack = 0, i; if ( cs ) { for ( i = 0; i < sl; ++i ) { hashNeedle = ((hashNeedle<<1) + *(n-i) ); hashHaystack = ((hashHaystack<<1) + *(h-i) ); } hashHaystack -= *haystack; while ( haystack >= end ) { hashHaystack += *haystack; if ( hashHaystack == hashNeedle && qstrncmp( needle, haystack, sl ) == 0 ) return haystack-data(); --haystack; REHASH( *(haystack+sl) ); } } else { for ( i = 0; i < sl; ++i ) { hashNeedle = ((hashNeedle<<1) + tolower( *(n-i) ) ); hashHaystack = ((hashHaystack<<1) + tolower( *(h-i) ) ); } hashHaystack -= tolower(*haystack); while ( haystack >= end ) { hashHaystack += tolower(*haystack); if ( hashHaystack == hashNeedle && qstrnicmp( needle, haystack, sl ) == 0 ) return haystack-data(); --haystack; REHASH( tolower(*(haystack+sl)) ); } } return -1; } /*! Returns the number of times the character \a c occurs in the string. The match is case sensitive if \a cs is TRUE, or case insensitive if \a cs if FALSE. \sa \link #asciinotion Note on character comparisons \endlink */ int QCString::contains( char c, bool cs ) const { int count = 0; char *d = data(); if ( !d ) return 0; if ( cs ) { // case sensitive while ( *d ) if ( *d++ == c ) count++; } else { // case insensitive c = tolower( (uchar) c ); while ( *d ) { if ( tolower((uchar) *d) == c ) count++; d++; } } return count; } /*! \overload Returns the number of times \a str occurs in the string. The match is case sensitive if \a cs is TRUE, or case insensitive if \a cs if FALSE. This function counts overlapping substrings, for example, "banana" contains two occurrences of "ana". \sa findRev() \link #asciinotion Note on character comparisons \endlink */ int QCString::contains( const char *str, bool cs ) const { int count = 0; int i = -1; + uint l = length(); // use find for the faster hashing algorithm - while ( ( i = find ( str, i+1, cs ) ) != -1 ) + while ( ( i = find ( str, i+1, cs, l ) ) != -1 ) count++; return count; } /*! Returns a substring that contains the \a len leftmost characters of the string. The whole string is returned if \a len exceeds the length of the string. Example: \code QCString s = "Pineapple"; QCString t = s.left( 4 ); // t == "Pine" \endcode \sa right(), mid() */ - QCString QCString::left( uint len ) const { if ( isEmpty() ) { QCString empty; return empty; } else if ( len >= size() ) { QCString same( data() ); return same; } else { QCString s( len+1 ); strncpy( s.data(), data(), len ); *(s.data()+len) = '\0'; return s; } } /*! Returns a substring that contains the \a len rightmost characters of the string. The whole string is returned if \a len exceeds the length of the string. Example: \code QCString s = "Pineapple"; QCString t = s.right( 5 ); // t == "apple" \endcode \sa left(), mid() */ QCString QCString::right( uint len ) const { if ( isEmpty() ) { QCString empty; return empty; } else { uint l = length(); if ( len > l ) len = l; char *p = data() + (l - len); return QCString( p ); } } /*! Returns a substring that contains at most \a len characters from this string, starting at position \a index. Returns a null string if the string is empty or if \a index is out of range. Returns the whole string from \a index if \a index+len exceeds the length of the string. Example: \code QCString s = "Two pineapples"; QCString t = s.mid( 4, 3 ); // t == "pin" \endcode \sa left(), right() */ QCString QCString::mid( uint index, uint len ) const { uint slen = qstrlen( data() ); if ( isEmpty() || index >= slen ) { QCString empty; return empty; } else { if ( len > slen-index ) len = slen - index; register char *p = data()+index; QCString s( len+1 ); strncpy( s.data(), p, len ); *(s.data()+len) = '\0'; return s; } } /*! Returns a string of length \a width (plus one for the terminating '\0') that contains this string padded with the \a fill character. If the length of the string exceeds \a width and \a truncate is FALSE (the default), then the returned string is a copy of the string. If the length of the string exceeds \a width and \a truncate is TRUE, then the returned string is a left(\a width). Example: \code QCString s("apple"); QCString t = s.leftJustify(8, '.'); // t == "apple..." \endcode \sa rightJustify() */ QCString QCString::leftJustify( uint width, char fill, bool truncate ) const { QCString result; int len = qstrlen(data()); int padlen = width - len; if ( padlen > 0 ) { result.QByteArray::resize( len+padlen+1 ); memcpy( result.data(), data(), len ); memset( result.data()+len, fill, padlen ); result[len+padlen] = '\0'; } else { if ( truncate ) result = left( width ); else result = copy(); } return result; } /*! Returns a string of length \a width (plus one for the terminating '\0') that contains zero or more of the \a fill character followed by this string. If the length of the string exceeds \a width and \a truncate is FALSE (the default), then the returned string is a copy of the string. If the length of the string exceeds \a width and \a truncate is TRUE, then the returned string is a left(\a width). Example: \code QCString s("pie"); QCString t = s.rightJustify(8, '.'); // t == ".....pie" \endcode \sa leftJustify() */ QCString QCString::rightJustify( uint width, char fill, bool truncate ) const { QCString result; int len = qstrlen(data()); int padlen = width - len; if ( padlen > 0 ) { result.QByteArray::resize( len+padlen+1 ); memset( result.data(), fill, padlen ); memcpy( result.data()+padlen, data(), len ); result[len+padlen] = '\0'; } else { if ( truncate ) result = left( width ); else result = copy(); } return result; } /*! Returns a new string that is a copy of this string converted to lower case. Example: \code QCString s("Credit"); QCString t = s.lower(); // t == "credit" \endcode \sa upper() \link #asciinotion Note on character comparisons \endlink */ QCString QCString::lower() const { QCString s( data() ); register char *p = s.data(); if ( p ) { while ( *p ) { *p = tolower( (uchar) *p ); p++; } } return s; } /*! Returns a new string that is a copy of this string converted to upper case. Example: \code QCString s( "Debit" ); QCString t = s.upper(); // t == "DEBIT" \endcode \sa lower() \link #asciinotion Note on character comparisons \endlink */ QCString QCString::upper() const { QCString s( data() ); register char *p = s.data(); if ( p ) { while ( *p ) { *p = toupper(*p); p++; } } return s; } /*! Returns a new string that has white space removed from the start and the end. White space means the decimal ASCII codes 9, 10, 11, 12, 13 and 32. Example: \code QCString s = " space "; QCString t = s.stripWhiteSpace(); // t == "space" \endcode \sa simplifyWhiteSpace() */ QCString QCString::stripWhiteSpace() const { if ( isEmpty() ) // nothing to do return copy(); register char *s = data(); QCString result = s; int reslen = result.length(); if ( !isspace((uchar) s[0]) && !isspace((uchar) s[reslen-1]) ) return result; // returns a copy s = result.data(); int start = 0; int end = reslen - 1; while ( isspace((uchar) s[start]) ) // skip white space from start start++; if ( s[start] == '\0' ) { // only white space result.resize( 1 ); return result; } while ( end && isspace((uchar) s[end]) ) // skip white space from end end--; end -= start - 1; memmove( result.data(), &s[start], end ); result.resize( end + 1 ); return result; } /*! Returns a new string that has white space removed from the start and the end, plus any sequence of internal white space replaced with a single space (ASCII 32). White space means the decimal ASCII codes 9, 10, 11, 12, 13 and 32. \code QCString s = " lots\t of\nwhite space "; QCString t = s.simplifyWhiteSpace(); // t == "lots of white space" \endcode \sa stripWhiteSpace() */ QCString QCString::simplifyWhiteSpace() const { if ( isEmpty() ) // nothing to do return copy(); QCString result( size() ); char *from = data(); char *to = result.data(); char *first = to; for ( ;; ) { while ( isspace((uchar) *from) ) from++; while ( *from && !isspace((uchar) *from) ) *to++ = *from++; if ( *from ) *to++ = 0x20; // ' ' else break; } if ( to > first && *(to-1) == 0x20 ) to--; *to = '\0'; result.resize( (int)(to - result.data()) + 1 ); return result; } /*! \overload Inserts string \a s into the string at position \a index. If \a index is beyond the end of the string, the string is padded with spaces (ASCII 32) to length \a index and then \a s is appended. \code QCString s = "I like fish"; s.insert( 2, "don't "); // s == "I don't like fish" s = "x"; // index 01234 s.insert( 3, "yz" ); // s == "x yz" \endcode */ QCString &QCString::insert( uint index, const char *s ) { int len = qstrlen(s); if ( len == 0 ) return *this; uint olen = length(); int nlen = olen + len; if ( index >= olen ) { // insert after end of string detach(); - if ( QByteArray::resize(nlen+index-olen+1) ) { + if ( QByteArray::resize(nlen+index-olen+1, QByteArray::SpeedOptim ) ) { memset( data()+olen, ' ', index-olen ); memcpy( data()+index, s, len+1 ); } - } else if ( QByteArray::resize(nlen+1) ) { // normal insert + } else { detach(); - memmove( data()+index+len, data()+index, olen-index+1 ); - memcpy( data()+index, s, len ); + if ( QByteArray::resize(nlen+1, QByteArray::SpeedOptim ) ) { // normal insert + memmove( data()+index+len, data()+index, olen-index+1 ); + memcpy( data()+index, s, len ); + } } return *this; } /*! Inserts character \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 padded with spaces (ASCII 32) to length \a index and then \a c is appended. Example: \code QCString s = "Yes"; s.insert( 3, '!'); // s == "Yes!" \endcode \sa remove(), replace() */ QCString &QCString::insert( uint index, char c ) // insert char { char buf[2]; buf[0] = c; buf[1] = '\0'; return insert( index, buf ); } /*! \fn QCString &QCString::prepend( const char *s ) Prepend \a s to the string. Equivalent to insert(0, s). \sa insert() */ /*! Removes \a len characters from the string, starting at position \a index, and returns a reference to the string. If \a index is out of range, nothing happens. If \a index is valid, but \a index + \a len is larger than the length of the string, the string is truncated at position \a index. \code QCString s = "Montreal"; s.remove( 1, 4 ); // s == "Meal" \endcode \sa insert(), replace() */ QCString &QCString::remove( uint index, uint len ) { uint olen = length(); if ( index + len >= olen ) { // range problems if ( index < olen ) { // index ok detach(); resize( index+1 ); } } else if ( len != 0 ) { detach(); memmove( data()+index, data()+index+len, olen-index-len+1 ); - QByteArray::resize(olen-len+1); + QByteArray::resize(olen-len+1, QByteArray::SpeedOptim ); } return *this; } /*! Replaces \a len characters from the string, starting at position \a index, with \a str, and returns a reference to the string. If \a index is out of range, nothing is removed and \a str is appended at the end of the string. If \a index is valid, but \a index + \a len is larger than the length of the string, \a str replaces the rest of the string from position \a index. \code QCString s = "Say yes!"; s.replace( 4, 3, "NO" ); // s == "Say NO!" \endcode \sa insert(), remove() */ QCString &QCString::replace( uint index, uint len, const char *str ) { remove( index, len ); insert( index, str ); return *this; } /*! \overload Replaces every occurrence of the character \a c in the string with \a after. Returns a reference to the string. Example: \code QCString s = "a,b,c"; s.replace( ',', " or " ); // s == "a or b or c" \endcode */ QCString &QCString::replace( char c, const char *after ) { char str[2]; str[0] = c; str[1] = '\0'; return replace( str, after ); } /*! \overload Replaces every occurrence of the string \a before in the string with the string \a after. Returns a reference to the string. Example: \code QCString s = "Greek is Greek"; s.replace( "Greek", "English" ); // s == "English is English" \endcode */ + QCString &QCString::replace( const char *before, const char *after ) { if ( before == after || isNull() ) return *this; detach(); int index = 0; const int bl = before ? strlen( before ) : 0; const int al = after ? strlen( after ) : 0; char *d = data(); uint len = length(); if ( bl == al ) { if ( bl ) { - while( (index = find( before, index ) ) != -1 ) { + while( (index = find( before, index, TRUE, len ) ) != -1 ) { memcpy( d+index, after, al ); index += bl; } } } else if ( al < bl ) { uint to = 0; uint movestart = 0; uint num = 0; - while( (index = find( before, index ) ) != -1 ) { + while( (index = find( before, index, TRUE, len ) ) != -1 ) { if ( num ) { int msize = index - movestart; if ( msize > 0 ) { memmove( d + to, d + movestart, msize ); to += msize; } } else { to = index; } if ( al ) { memcpy( d + to, after, al ); to += al; } index += bl; movestart = index; num++; } if ( num ) { int msize = len - movestart; if ( msize > 0 ) memmove( d + to, d + movestart, msize ); resize( len - num*(bl-al) + 1 ); } } else { // the most complex case. We don't want to loose performance by doing repeated // copies and reallocs of the string. while( index != -1 ) { uint indices[4096]; uint pos = 0; while( pos < 4095 ) { - index = find(before, index); + index = find(before, index, TRUE, len); if ( index == -1 ) break; indices[pos++] = index; index += bl; // avoid infinite loop if ( !bl ) index++; } if ( !pos ) break; // we have a table of replacement positions, use them for fast replacing int adjust = pos*(al-bl); // index has to be adjusted in case we get back into the loop above. if ( index != -1 ) index += adjust; uint newlen = len + adjust; int moveend = len; if ( newlen > len ) { resize( newlen + 1 ); len = newlen; } d = data(); while( pos ) { pos--; int movestart = indices[pos] + bl; int insertstart = indices[pos] + pos*(al-bl); int moveto = insertstart + al; memmove( d + moveto, d + movestart, (moveend - movestart) ); if ( after ) memcpy( d + insertstart, after, al ); moveend = movestart - bl; } } } return *this; } /*! \overload Replaces every occurrence of \a c1 with the char \a c2. Returns a reference to the string. */ QCString &QCString::replace( char c1, char c2 ) { detach(); uint i = 0; char *d = data(); uint len = length(); while ( i < len ) { if ( d[i] == c1 ) d[i] = c2; i++; } return *this; } #ifndef QT_NO_REGEXP_CAPTURE /*! \overload Finds the first occurrence of the regular expression \a rx, starting at position \a index. Returns the position of the next match, or -1 if \a rx was not found. \warning If you want to apply this function repeatedly to the same string it is more efficient to convert the string to a QString and apply the function to that. */ int QCString::find( const QRegExp& rx, int index ) const { - QString d = QString::fromLatin1( data() ); + QString d = QString::fromAscii( data() ); return d.find( rx, index ); } /*! \overload Finds the first occurrence of the regular expression \a rx, starting at position \a index and searching backwards. Returns the position of the next match (backwards), or -1 if \a rx was not found. \warning If you want to apply this function repeatedly to the same string it is more efficient to convert the string to a QString and apply the function to that. */ int QCString::findRev( const QRegExp& rx, int index ) const { - QString d = QString::fromLatin1( data() ); + QString d = QString::fromAscii( data() ); return d.findRev( rx, index ); } /*! \overload Counts the number of overlapping occurrences of \a rx in the string. Example: \code QString s = "banana and panama"; QRegExp r = QRegExp( "a[nm]a", TRUE, FALSE ); s.contains( r ); // 4 matches \endcode \sa find(), findRev() \warning If you want to apply this function repeatedly to the same string it is more efficient to convert the string to a QString and apply the function to that. */ int QCString::contains( const QRegExp &rx ) const { - QString d = QString::fromLatin1( data() ); + QString d = QString::fromAscii( data() ); return d.contains( rx ); } /*! \overload Replaces every occurrence of \a rx in the string with \a str. Returns a reference to the string. Example: \code QString s = "banana"; s.replace( QRegExp("a.*a"), "" ); // becomes "b" s = "banana"; s.replace( QRegExp("^[bn]a"), "X" ); // becomes "Xnana" s = "banana"; s.replace( QRegExp("^[bn]a"), "" ); // becomes "nana" \endcode \warning If you want to apply this function repeatedly to the same string it is more efficient to convert the string to a QString and apply the function to that. */ QCString &QCString::replace( const QRegExp &rx, const char *str ) { - QString d = QString::fromLatin1( data() ); - QString r = QString::fromLatin1( str ); + QString d = QString::fromAscii( data() ); + QString r = QString::fromAscii( str ); d.replace( rx, r ); setStr( d.ascii() ); return *this; } #endif //QT_NO_REGEXP /*! Returns the string converted to a \c long value. If \a ok is not 0: \a *ok is set to FALSE if the string is not a number, or if it has trailing garbage; otherwise \a *ok is set to TRUE. */ long QCString::toLong( bool *ok ) const { char *p = data(); long val=0; const long max_mult = 214748364; bool is_ok = FALSE; int neg = 0; if ( !p ) goto bye; while ( isspace((uchar) *p) ) // skip leading space p++; if ( *p == '-' ) { p++; neg = 1; } else if ( *p == '+' ) { p++; } if ( !isdigit((uchar) *p) ) goto bye; while ( isdigit((uchar) *p) ) { if ( val > max_mult || (val == max_mult && (*p-'0') > 7+neg) ) goto bye; val = 10*val + (*p++ - '0'); } if ( neg ) val = -val; while ( isspace((uchar) *p) ) // skip trailing space p++; if ( *p == '\0' ) is_ok = TRUE; bye: if ( ok ) *ok = is_ok; return is_ok ? val : 0; } /*! Returns the string converted to an \c{unsigned long} value. If \a ok is not 0: \a *ok is set to FALSE if the string is not a number, or if it has trailing garbage; otherwise \a *ok is set to TRUE. */ ulong QCString::toULong( bool *ok ) const { char *p = data(); ulong val=0; const ulong max_mult = 429496729; bool is_ok = FALSE; if ( !p ) goto bye; while ( isspace((uchar) *p) ) // skip leading space p++; if ( *p == '+' ) p++; if ( !isdigit((uchar) *p) ) goto bye; while ( isdigit((uchar) *p) ) { if ( val > max_mult || (val == max_mult && (*p-'0') > 5) ) goto bye; val = 10*val + (*p++ - '0'); } while ( isspace((uchar) *p) ) // skip trailing space p++; if ( *p == '\0' ) is_ok = TRUE; bye: if ( ok ) *ok = is_ok; return is_ok ? val : 0; } /*! Returns the string converted to a \c{short} value. If \a ok is not 0: \a *ok is set to FALSE if the string is not a number, is out of range, or if it has trailing garbage; otherwise \a *ok is set to TRUE. */ short QCString::toShort( bool *ok ) const { long v = toLong( ok ); if ( ok && *ok && (v < -32768 || v > 32767) ) *ok = FALSE; return (short)v; } /*! Returns the string converted to an \c{unsigned short} value. If \a ok is not 0: \a *ok is set to FALSE if the string is not a number, is out of range, or if it has trailing garbage; otherwise \a *ok is set to TRUE. */ ushort QCString::toUShort( bool *ok ) const { ulong v = toULong( ok ); if ( ok && *ok && (v > 65535) ) *ok = FALSE; return (ushort)v; } /*! Returns the string converted to a \c{int} value. If \a ok is not 0: \a *ok is set to FALSE if the string is not a number, or if it has trailing garbage; otherwise \a *ok is set to TRUE. */ int QCString::toInt( bool *ok ) const { return (int)toLong( ok ); } /*! Returns the string converted to an \c{unsigned int} value. If \a ok is not 0: \a *ok is set to FALSE if the string is not a number, or if it has trailing garbage; otherwise \a *ok is set to TRUE. */ uint QCString::toUInt( bool *ok ) const { return (uint)toULong( ok ); } /*! Returns the string converted to a \c{double} value. If \a ok is not 0: \a *ok is set to FALSE if the string is not a number, or if it has trailing garbage; otherwise \a *ok is set to TRUE. */ double QCString::toDouble( bool *ok ) const { char *end; double val = strtod( data() ? data() : "", &end ); if ( ok ) *ok = ( data() && *data() && ( end == 0 || *end == '\0' ) ); return val; } /*! Returns the string converted to a \c{float} value. If \a ok is not 0: \a *ok is set to FALSE if the string is not a number, or if it has trailing garbage; otherwise \a *ok is set to TRUE. */ float QCString::toFloat( bool *ok ) const { return (float)toDouble( ok ); } /*! Makes a deep copy of \a str. Returns a reference to the string. */ QCString &QCString::setStr( const char *str ) { detach(); if ( str ) // valid string store( str, qstrlen(str)+1 ); else // empty resize( 0 ); return *this; } /*! \overload Sets the string to the string representation of the number \a n and returns a reference to the string. */ QCString &QCString::setNum( long n ) { detach(); char buf[20]; register char *p = &buf[19]; bool neg; if ( n < 0 ) { neg = TRUE; n = -n; } else { neg = FALSE; } *p = '\0'; do { *--p = ((int)(n%10)) + '0'; n /= 10; } while ( n ); if ( neg ) *--p = '-'; store( p, qstrlen(p)+1 ); return *this; } /*! \overload Sets the string to the string representation of the number \a n and returns a reference to the string. */ QCString &QCString::setNum( ulong n ) { detach(); char buf[20]; register char *p = &buf[19]; *p = '\0'; do { *--p = ((int)(n%10)) + '0'; n /= 10; } while ( n ); store( p, qstrlen(p)+1 ); return *this; } /*! \overload QCString &QCString::setNum( int n ) Sets the string to the string representation of the number \a n and returns a reference to the string. */ /*! \overload QCString &QCString::setNum( uint n ) Sets the string to the string representation of the number \a n and returns a reference to the string. */ /*! \overload QCString &QCString::setNum( short n ) Sets the string to the string representation of the number \a n and returns a reference to the string. */ /*! \overload QCString &QCString::setNum( ushort n ) Sets the string to the string representation of the number \a n and returns a reference to the string. */ /*! Sets the string to the string representation of the number \a n and returns a reference to the string. The format of the string representation is specified by the format character \a f, and the precision (number of digits after the decimal point) is specified with \a prec. The valid formats for \a f are 'e', 'E', 'f', 'g' and 'G'. The formats are the same as for sprintf(); they are explained in \l QString::arg(). */ QCString &QCString::setNum( double n, char f, int prec ) { #if defined(QT_CHECK_RANGE) if ( !(f=='f' || f=='F' || f=='e' || f=='E' || f=='g' || f=='G') ) qWarning( "QCString::setNum: Invalid format char '%c'", f ); #endif char format[20]; register char *fs = format; // generate format string *fs++ = '%'; // "%.<prec>l<f>" if ( prec > 99 ) prec = 99; *fs++ = '.'; if ( prec >= 10 ) { *fs++ = prec / 10 + '0'; *fs++ = prec % 10 + '0'; } else { *fs++ = prec + '0'; } *fs++ = 'l'; *fs++ = f; *fs = '\0'; return sprintf( format, n ); } /*! \overload QCString &QCString::setNum( float n, char f, int prec ) */ /*! Sets the character at position \a index to \a c and expands the string if necessary, padding with spaces. Returns FALSE if \a index was out of range and the string could not be expanded; otherwise returns TRUE. */ bool QCString::setExpand( uint index, char c ) { detach(); uint oldlen = length(); if ( index >= oldlen ) { if ( !QByteArray::resize( index+2 ) ) // no memory return FALSE; if ( index > oldlen ) memset( data() + oldlen, ' ', index - oldlen ); *(data() + index+1) = '\0'; // terminate padded string } *(data() + index) = c; return TRUE; } /*! \fn QCString::operator const char *() const Returns the string data. */ /*! \fn QCString& QCString::append( const char *str ) Appends string \a str to the string and returns a reference to the string. Equivalent to operator+=(). */ /*! Appends string \a str to the string and returns a reference to the string. */ QCString& QCString::operator+=( const char *str ) { if ( !str ) return *this; // nothing to append detach(); uint len1 = length(); uint len2 = qstrlen(str); - if ( !QByteArray::resize( len1 + len2 + 1 ) ) + if ( !QByteArray::resize( len1 + len2 + 1, QByteArray::SpeedOptim ) ) return *this; // no memory memcpy( data() + len1, str, len2 + 1 ); return *this; } /*! \overload Appends character \a c to the string and returns a reference to the string. */ QCString &QCString::operator+=( char c ) { detach(); uint len = length(); - if ( !QByteArray::resize( len + 2 ) ) + if ( !QByteArray::resize( len + 2, QByteArray::SpeedOptim ) ) return *this; // no memory *(data() + len) = c; *(data() + len+1) = '\0'; return *this; } /***************************************************************************** QCString stream functions *****************************************************************************/ #ifndef QT_NO_DATASTREAM /*! \relates QCString Writes string \a str to the stream \a s. \sa \link datastreamformat.html Format of the QDataStream operators \endlink */ QDataStream &operator<<( QDataStream &s, const QCString &str ) { return s.writeBytes( str.data(), str.size() ); } /*! \relates QCString Reads a string into \a str from the stream \a s. \sa \link datastreamformat.html Format of the QDataStream operators \endlink */ QDataStream &operator>>( QDataStream &s, QCString &str ) { str.detach(); Q_UINT32 len; s >> len; // read size of string if ( len == 0 || s.eof() ) { // end of file reached str.resize( 0 ); return s; } if ( !str.QByteArray::resize( (uint)len )) {// resize string #if defined(QT_CHECK_NULL) qWarning( "QDataStream: Not enough memory to read QCString" ); #endif len = 0; } if ( len > 0 ) // not null array s.readRawBytes( str.data(), (uint)len ); return s; } #endif //QT_NO_DATASTREAM /***************************************************************************** Documentation for related functions *****************************************************************************/ /*! \fn bool operator==( const QCString &s1, const QCString &s2 ) \relates QCString Returns TRUE if \a s1 and \a s2 are equal; otherwise returns FALSE. Equivalent to qstrcmp(\a s1, \a s2) == 0. */ /*! \overload bool operator==( const QCString &s1, const char *s2 ) \relates QCString Returns TRUE if \a s1 and \a s2 are equal; otherwise returns FALSE. Equivalent to qstrcmp(\a s1, \a s2) == 0. */ /*! \overload bool operator==( const char *s1, const QCString &s2 ) \relates QCString Returns TRUE if \a s1 and \a s2 are equal; otherwise returns FALSE. Equivalent to qstrcmp(\a s1, \a s2) == 0. */ /*! \fn bool operator!=( const QCString &s1, const QCString &s2 ) \relates QCString Returns TRUE if \a s1 and \a s2 are different; otherwise returns FALSE. Equivalent to qstrcmp(\a s1, \a s2) != 0. */ /*! \overload bool operator!=( const QCString &s1, const char *s2 ) \relates QCString Returns TRUE if \a s1 and \a s2 are different; otherwise returns FALSE. Equivalent to qstrcmp(\a s1, \a s2) != 0. */ /*! \overload bool operator!=( const char *s1, const QCString &s2 ) \relates QCString Returns TRUE if \a s1 and \a s2 are different; otherwise returns FALSE. Equivalent to qstrcmp(\a s1, \a s2) != 0. */ /*! \fn bool operator<( const QCString &s1, const char *s2 ) \relates QCString Returns TRUE if \a s1 is less than \a s2; otherwise returns FALSE. Equivalent to qstrcmp(\a s1, \a s2) \< 0. \sa \link #asciinotion Note on character comparisons \endlink */ /*! \overload bool operator<( const char *s1, const QCString &s2 ) \relates QCString Returns TRUE if \a s1 is less than \a s2; otherwise returns FALSE. Equivalent to qstrcmp(\a s1, \a s2) \< 0. \sa \link #asciinotion Note on character comparisons \endlink */ /*! \fn bool operator<=( const QCString &s1, const char *s2 ) \relates QCString Returns TRUE if \a s1 is less than or equal to \a s2; otherwise returns FALSE. Equivalent to qstrcmp(\a s1, \a s2) \<= 0. \sa \link #asciinotion Note on character comparisons \endlink */ /*! \overload bool operator<=( const char *s1, const QCString &s2 ) \relates QCString Returns TRUE if \a s1 is less than or equal to \a s2; otherwise returns FALSE. Equivalent to qstrcmp(\a s1, \a s2) \<= 0. \sa \link #asciinotion Note on character comparisons \endlink */ /*! \fn bool operator>( const QCString &s1, const char *s2 ) \relates QCString Returns TRUE if \a s1 is greater than \a s2; otherwise returns FALSE. Equivalent to qstrcmp(\a s1, \a s2) \> 0. \sa \link #asciinotion Note on character comparisons \endlink */ /*! \overload bool operator>( const char *s1, const QCString &s2 ) \relates QCString Returns TRUE if \a s1 is greater than \a s2; otherwise returns FALSE. Equivalent to qstrcmp(\a s1, \a s2) \> 0. \sa \link #asciinotion Note on character comparisons \endlink */ /*! \fn bool operator>=( const QCString &s1, const char *s2 ) \relates QCString Returns TRUE if \a s1 is greater than or equal to \a s2; otherwise returns FALSE. Equivalent to qstrcmp(\a s1, \a s2) \>= 0. \sa \link #asciinotion Note on character comparisons \endlink */ /*! \overload bool operator>=( const char *s1, const QCString &s2 ) \relates QCString Returns TRUE if \a s1 is greater than or equal to \a s2; otherwise returns FALSE. Equivalent to qstrcmp(\a s1, \a s2) \>= 0. \sa \link #asciinotion Note on character comparisons \endlink */ /*! \fn const QCString operator+( const QCString &s1, const QCString &s2 ) \relates QCString Returns a string which consists of the concatenation of \a s1 and \a s2. */ /*! \overload const QCString operator+( const QCString &s1, const char *s2 ) \relates QCString Returns a string which consists of the concatenation of \a s1 and \a s2. */ /*! \overload const QCString operator+( const char *s1, const QCString &s2 ) \relates QCString Returns a string which consists of the concatenation of \a s1 and \a s2. */ /*! \overload const QCString operator+( const QCString &s, char c ) \relates QCString Returns a string which consists of the concatenation of \a s and \a c. */ /*! \overload const QCString operator+( char c, const QCString &s ) \relates QCString Returns a string which consists of the concatenation of \a c and \a s. */ |