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/****************************************************************************
**
** Implementation of TQStringList
**
** Created : 990406
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the tools module of the TQt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
** included in the packaging of this file. Licensees holding valid TQt
** Commercial licenses may use this file in accordance with the TQt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#include "ntqstringlist.h"
#ifndef TQT_NO_STRINGLIST
#include "ntqregexp.h"
#include "ntqstrlist.h"
#include "ntqdatastream.h"
#include "ntqtl.h"
/*!
\class TQStringList ntqstringlist.h
\reentrant
\brief The TQStringList class provides a list of strings.
\ingroup tools
\ingroup shared
\ingroup text
\mainclass
It is used to store and manipulate strings that logically belong
together. Essentially TQStringList is a TQValueList of TQString
objects. Unlike TQStrList, which stores pointers to characters,
TQStringList holds real TQString objects. It is the class of choice
whenever you work with Unicode strings. TQStringList is part of the
\link ntqtl.html TQt Template Library\endlink.
Like TQString itself, TQStringList objects are implicitly shared, so
passing them around as value-parameters is both fast and safe.
Strings can be added to a list using append(), operator+=() or
operator<<(), e.g.
\code
TQStringList fonts;
fonts.append( "Times" );
fonts += "Courier";
fonts += "Courier New";
fonts << "Helvetica [Cronyx]" << "Helvetica [Adobe]";
\endcode
String lists have an iterator, TQStringList::Iterator(), e.g.
\code
for ( TQStringList::Iterator it = fonts.begin(); it != fonts.end(); ++it ) {
cout << *it << ":";
}
cout << endl;
// Output:
// Times:Courier:Courier New:Helvetica [Cronyx]:Helvetica [Adobe]:
\endcode
Many TQt functions return string lists by value; to iterate over
these you should make a copy and iterate over the copy.
You can concatenate all the strings in a string list into a single
string (with an optional separator) using join(), e.g.
\code
TQString allFonts = fonts.join( ", " );
cout << allFonts << endl;
// Output:
// Times, Courier, Courier New, Helvetica [Cronyx], Helvetica [Adobe]
\endcode
You can sort the list with sort(), and extract a new list which
contains only those strings which contain a particular substring
(or match a particular regular expression) using the grep()
functions, e.g.
\code
fonts.sort();
cout << fonts.join( ", " ) << endl;
// Output:
// Courier, Courier New, Helvetica [Adobe], Helvetica [Cronyx], Times
TQStringList helveticas = fonts.grep( "Helvetica" );
cout << helveticas.join( ", " ) << endl;
// Output:
// Helvetica [Adobe], Helvetica [Cronyx]
\endcode
Existing strings can be split into string lists with character,
string or regular expression separators, e.g.
\code
TQString s = "Red\tGreen\tBlue";
TQStringList colors = TQStringList::split( "\t", s );
cout << colors.join( ", " ) << endl;
// Output:
// Red, Green, Blue
\endcode
*/
/*!
\fn TQStringList::TQStringList()
Creates an empty string list.
*/
/*!
\fn TQStringList::TQStringList( const TQStringList& l )
Creates a copy of the list \a l. This function is very fast
because TQStringList is implicitly shared. In most situations this
acts like a deep copy, for example, if this list or the original
one or some other list referencing the same shared data is
modified, the modifying list first makes a copy, i.e.
copy-on-write.
In a threaded environment you may require a real deep copy
\omit see \l TQDeepCopy\endomit.
*/
/*!
\fn TQStringList::TQStringList (const TQString & i)
Constructs a string list consisting of the single string \a i.
Longer lists are easily created as follows:
\code
TQStringList items;
items << "Buy" << "Sell" << "Update" << "Value";
\endcode
*/
/*!
\fn TQStringList::TQStringList (const char* i)
Constructs a string list consisting of the single Latin-1 string \a i.
*/
/*!
\fn TQStringList::TQStringList( const TQValueList<TQString>& l )
Constructs a new string list that is a copy of \a l.
*/
/*!
Sorts the list of strings in ascending case-sensitive order.
Sorting is very fast. It uses the \link ntqtl.html TQt Template
Library's\endlink efficient HeapSort implementation that has a
time complexity of O(n*log n).
If you want to sort your strings in an arbitrary order consider
using a TQMap. For example you could use a TQMap\<TQString,TQString\>
to create a case-insensitive ordering (e.g. mapping the lowercase
text to the text), or a TQMap\<int,TQString\> to sort the strings by
some integer index, etc.
*/
void TQStringList::sort()
{
qHeapSort( *this );
}
/*!
\overload
This version of the function uses a TQChar as separator, rather
than a regular expression.
\sa join() TQString::section()
*/
TQStringList TQStringList::split( const TQChar &sep, const TQString &str,
bool allowEmptyEntries )
{
return split( TQString(sep), str, allowEmptyEntries );
}
/*!
\overload
This version of the function uses a TQString as separator, rather
than a regular expression.
If \a sep is an empty string, the return value is a list of
one-character strings: split( TQString( "" ), "four" ) returns the
four-item list, "f", "o", "u", "r".
If \a allowEmptyEntries is TRUE, a null string is inserted in
the list wherever the separator matches twice without intervening
text.
\sa join() TQString::section()
*/
TQStringList TQStringList::split( const TQString &sep, const TQString &str,
bool allowEmptyEntries )
{
TQStringList lst;
int j = 0;
int i = str.find( sep, j );
while ( i != -1 ) {
if ( i > j && i <= (int)str.length() )
lst << str.mid( j, i - j );
else if ( allowEmptyEntries )
lst << TQString::null;
j = i + sep.length();
i = str.find( sep, sep.length() > 0 ? j : j+1 );
}
int l = str.length() - 1;
if ( str.mid( j, l - j + 1 ).length() > 0 )
lst << str.mid( j, l - j + 1 );
else if ( allowEmptyEntries )
lst << TQString::null;
return lst;
}
#ifndef TQT_NO_REGEXP
/*!
Splits the string \a str into strings wherever the regular
expression \a sep occurs, and returns the list of those strings.
If \a allowEmptyEntries is TRUE, a null string is inserted in
the list wherever the separator matches twice without intervening
text.
For example, if you split the string "a,,b,c" on commas, split()
returns the three-item list "a", "b", "c" if \a allowEmptyEntries
is FALSE (the default), and the four-item list "a", "", "b", "c"
if \a allowEmptyEntries is TRUE.
If \a sep does not match anywhere in \a str, split() returns a
single element list with the element containing the single string
\a str.
\sa join() TQString::section()
*/
TQStringList TQStringList::split( const TQRegExp &sep, const TQString &str,
bool allowEmptyEntries )
{
TQStringList lst;
TQRegExp tep = sep;
int j = 0;
int i = tep.search( str, j );
while ( i != -1 ) {
if ( str.mid( j, i - j ).length() > 0 )
lst << str.mid( j, i - j );
else if ( allowEmptyEntries )
lst << TQString::null;
if ( tep.matchedLength() == 0 )
j = i + 1;
else
j = i + tep.matchedLength();
i = tep.search( str, j );
}
int l = str.length() - 1;
if ( str.mid( j, l - j + 1 ).length() > 0 )
lst << str.mid( j, l - j + 1 );
else if ( allowEmptyEntries )
lst << TQString::null;
return lst;
}
#endif
/*!
Returns a list of all the strings containing the substring \a str.
If \a cs is TRUE, the grep is done case-sensitively; otherwise
case is ignored.
\code
TQStringList list;
list << "Bill Gates" << "John Doe" << "Bill Clinton";
list = list.grep( "Bill" );
// list == ["Bill Gates", "Bill Clinton"]
\endcode
\sa TQString::find()
*/
TQStringList TQStringList::grep( const TQString &str, bool cs ) const
{
TQStringList res;
for ( TQStringList::ConstIterator it = begin(); it != end(); ++it )
if ( (*it).contains(str, cs) )
res << *it;
return res;
}
#ifndef TQT_NO_REGEXP
/*!
\overload
Returns a list of all the strings that match the regular
expression \a rx.
\sa TQString::find()
*/
TQStringList TQStringList::grep( const TQRegExp &rx ) const
{
TQStringList res;
for ( TQStringList::ConstIterator it = begin(); it != end(); ++it )
if ( (*it).find(rx) != -1 )
res << *it;
return res;
}
#endif
/*!
Replaces every occurrence of the string \a before in the strings
that constitute the string list with the string \a after. Returns
a reference to the string list.
If \a cs is TRUE, the search is case sensitive; otherwise the
search is case insensitive.
Example:
\code
TQStringList list;
list << "alpha" << "beta" << "gamma" << "epsilon";
list.gres( "a", "o" );
// list == ["olpho", "beto", "gommo", "epsilon"]
\endcode
\sa TQString::replace()
*/
TQStringList& TQStringList::gres( const TQString &before, const TQString &after,
bool cs )
{
TQStringList::Iterator it = begin();
while ( it != end() ) {
(*it).replace( before, after, cs );
++it;
}
return *this;
}
#ifndef TQT_NO_REGEXP_CAPTURE
/*!
\overload
Replaces every occurrence of the regexp \a rx in the string
with \a after. Returns a reference to the string list.
Example:
\code
TQStringList list;
list << "alpha" << "beta" << "gamma" << "epsilon";
list.gres( TQRegExp("^a"), "o" );
// list == ["olpha", "beta", "gamma", "epsilon"]
\endcode
For regexps containing \link ntqregexp.html#capturing-text
capturing parentheses \endlink, occurrences of <b>\\1</b>,
<b>\\2</b>, ..., in \a after are replaced with \a{rx}.cap(1),
cap(2), ...
Example:
\code
TQStringList list;
list << "Bill Clinton" << "Gates, Bill";
list.gres( TQRegExp("^(.*), (.*)$"), "\\2 \\1" );
// list == ["Bill Clinton", "Bill Gates"]
\endcode
\sa TQString::replace()
*/
TQStringList& TQStringList::gres( const TQRegExp &rx, const TQString &after )
{
TQStringList::Iterator it = begin();
while ( it != end() ) {
(*it).replace( rx, after );
++it;
}
return *this;
}
#endif
/*!
Joins the string list into a single string with each element
separated by the string \a sep (which can be empty).
\sa split()
*/
TQString TQStringList::join( const TQString &sep ) const
{
TQString res;
bool alredy = FALSE;
for ( TQStringList::ConstIterator it = begin(); it != end(); ++it ) {
if ( alredy )
res += sep;
alredy = TRUE;
res += *it;
}
return res;
}
#ifndef TQT_NO_DATASTREAM
TQ_EXPORT TQDataStream &operator>>( TQDataStream & s, TQStringList& l )
{
return s >> (TQValueList<TQString>&)l;
}
TQ_EXPORT TQDataStream &operator<<( TQDataStream & s, const TQStringList& l )
{
return s << (const TQValueList<TQString>&)l;
}
#endif
/*!
Converts from an ASCII-TQStrList \a ascii to a TQStringList (Unicode).
*/
TQStringList TQStringList::fromStrList(const TQStrList& ascii)
{
TQStringList res;
const char * s;
for ( TQStrListIterator it(ascii); (s=it.current()); ++it )
res << s;
return res;
}
/*! \fn void TQStringList::detach()
\reimp
*/
#endif //TQT_NO_STRINGLIST
|