wstring.h

funambol window mobile客户端源代码

/*
 * Funambol is a mobile platform developed by Funambol, Inc. 
 * Copyright (C) 2003 - 2007 Funambol, Inc.
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License version 3 as published by
 * the Free Software Foundation with the addition of the following permission 
 * added to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED
 * WORK IN WHICH THE COPYRIGHT IS OWNED BY FUNAMBOL, FUNAMBOL DISCLAIMS THE 
 * WARRANTY OF NON INFRINGEMENT  OF THIRD PARTY RIGHTS.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Affero General Public License 
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301 USA.
 * 
 * You can contact Funambol, Inc. headquarters at 643 Bair Island Road, Suite 
 * 305, Redwood City, CA 94063, USA, or at email address [e-mail].
 * 
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License version 3.
 * 
 * In accordance with Section 7(b) of the GNU Affero General Public License
 * version 3, these Appropriate Legal Notices must retain the display of the
 * "Powered by Funambol" logo. If the display of the logo is not reasonably 
 * feasible for technical reasons, the Appropriate Legal Notices must display
 * the words "Powered by Funambol".
 */

#ifndef INCL_WSTRING
#define INCL_WSTRING
/** @cond DEV */

#include "base/util/ArrayElement.h"
#include "base/globalsdef.h"

BEGIN_NAMESPACE

class ArrayList;
class StringBuffer;

#define DEFAULT_DELIMITER (const WCHAR* )TEXT(" ")

/**
 * Awful implementation of a WString!
 */
class WString: public ArrayElement {
    public:
        // Constant value for an invalid pos (returned by find and rfind)
        static const size_t npos;

        WString(const WCHAR* str = NULL, size_t len = npos);

        WString(const WString &sb);

        ~WString();

        WString& append(const WCHAR*);

        WString& append(unsigned long u, bool sign = true);

        WString& append(WString& s);

        WString& append(WString* str);

        WString& set(const WCHAR*);

        /**
         * Release the string buffer.
         */
        WString& reset();

        /**
         * Get the WCHAR array, same as the cast operator
         */
        const WCHAR* getChars() const;
        inline const WCHAR* c_str() const { return s; };

        /**
         * Find the first occurrence of substring str.
         *
         * @return - the position or WString::npos if not found.
         */
        size_t find(const WCHAR *str, size_t pos = 0) const;

        /**
         * Find the first occurrence of substring str, using case insensitive compare.
         *
         * @return - the position or WString::npos if not found.
         */
        size_t ifind(const WCHAR *str, size_t pos = 0) const;

        /**
         * Replace the first occurrence of substring 'from' with string 'to'.
         *
         * @return - the position of the first token replaced or WString::npos if
         *           not found.
         */
        size_t replace(const WCHAR *from, const WCHAR *to, size_t pos = 0);
        /**
         * Replace all the occurrences of substring 'from' with string 'to'.
         *
         * @return - the number of tokens replaced
         */
        int replaceAll(const WCHAR *from, const WCHAR *to, size_t pos = 0);

        /**
         * Splits string on each occurrence of any of the characters in
         * delimiters.
         *
         * @return - the position or WString::npos if not found.
         */
        ArrayList &split (ArrayList &tokens,
                          const WCHAR *delimiters = DEFAULT_DELIMITER ) const;

        /**
         * Joins all the tokens in the given ArrayList, using separator to
         * contatenate them, appending them to the WString
         *
         * @return - the WString
         */
        WString& join(ArrayList &tokens, const WCHAR *separator);

        /**
         * Return the substring between pos and pos+len.
         * If pos is greater then the string length, or len is 0, return an
         * empty string
         * If len is greater then the string length, the last is used.
         */
        WString substr(size_t pos, size_t len = npos) const;

        /**
         * Return the length of the string, or zero if the internal pointer
         * is NULL.
         */
        unsigned long length() const;

        /**
         * Reserve len amount of space for the string.
         */
        void reserve(size_t len);

        /**
         * Make the string upper case
         */
        WString& upperCase() ;

        /**
         * Make the string lower case
         */
        WString& lowerCase() ;

        /**
         * Perform case insensitive compare
         */
        bool icmp(const WCHAR *sc) const ;

        /**
         * True if the string is null or empty
         */
        bool empty() const;

        /**
         * True if the string is null
         */
        bool null() const;

        /**
         * Clone the string
         */
        ArrayElement* clone() ;

        /**
         * Class operators
         */
        WString& operator= (const WCHAR* sc) ;
        WString& operator= (const WString& s) ;
        WString& operator= (const StringBuffer& s) ;
        WString& operator+= (const WCHAR* sc) ;
        WString& operator+= (const WString& s) ;
        WString& operator+= (const StringBuffer& s) ;
        bool operator== (const WCHAR* sc) const ;
        bool operator== (const WString& sb) const ;
        bool operator== (const StringBuffer& sb) const ;
        bool operator!= (const WCHAR* sc) const ;
        bool operator!= (const WString& s) const ;
        bool operator!= (const StringBuffer& sb) const ;

        inline operator const WCHAR*() const { return s; } ;

    private:
        WCHAR* s;
        size_t size;

        // Allocator
        void getmem(size_t len);
        // Deallocator
        void freemem();
};

WString operator+(const WString& x, const WCHAR *y);


END_NAMESPACE

/** @endcond */
#endif