/****************************************************************************** * * swkey.h - code for base class 'swkey'. swkey is the basis for all * types of keys for indexing into modules (e.g. verse, word, * place, etc.) * * $Id$ * * Copyright 1998-2013 CrossWire Bible Society (http://www.crosswire.org) * CrossWire Bible Society * P. O. Box 2528 * Tempe, AZ 85280-2528 * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation version 2. * * 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. * */ #ifndef SWKEY_H #define SWKEY_H #include #include #include #include SWORD_NAMESPACE_START #define KEYERR_OUTOFBOUNDS 1 #define SWKEY_OPERATORS \ SWKey &operator =(const char *ikey) { setText(ikey); return *this; } \ SWKey &operator =(const SWKey &ikey) { positionFrom(ikey); return *this; } \ SWKey &operator =(SW_POSITION pos) { setPosition(pos); return *this; } \ operator const char *() const { return getText(); } \ bool operator ==(const SWKey &ikey) { return equals(ikey); } \ bool operator !=(const SWKey &ikey) { return !equals(ikey); } \ virtual bool operator >(const SWKey &ikey) { return (compare(ikey) > 0); } \ virtual bool operator <(const SWKey &ikey) { return (compare(ikey) < 0); } \ virtual bool operator >=(const SWKey &ikey) { return (compare(ikey) > -1); } \ virtual bool operator <=(const SWKey &ikey) { return (compare(ikey) < 1); } \ SWKey &operator -=(int steps) { decrement(steps); return *this; } \ SWKey &operator +=(int steps) { increment(steps); return *this; } \ SWKey &operator ++() { increment(1); return *this; } \ SWKey operator ++(int) { SWKey temp = *this; increment(1); return temp; } \ SWKey &operator --() { decrement(1); return *this; } \ SWKey operator --(int) { SWKey temp = *this; decrement(1); return temp; } /** For use with = operator to position key. */ class SW_POSITION { char pos; public: SW_POSITION(char ipos) { pos = ipos; } operator char() { return pos; } }; #define POS_TOP ((char)1) #define POS_BOTTOM ((char)2) #define TOP SW_POSITION(POS_TOP) #define BOTTOM SW_POSITION(POS_BOTTOM) class SWLocale; /** SWKey is used for positioning an SWModule to a specific entry. * It always represents a possible location into a module and can additionally represent * a domain of entries (e.g. "John 3:16" in the domain "John 1:1 - Mark 5:25") */ class SWDLLEXPORT SWKey : public SWObject { class LocaleCache { public: char *name; SWLocale *locale; LocaleCache() { name = 0; locale = 0; } virtual ~LocaleCache() { if (name) delete[]name; } }; static LocaleCache localeCache; // for caching; don't use directly, call getPrivateLocale() mutable SWLocale *locale; long index; static SWClass classdef; void init(); protected: char *keytext; mutable char *rangeText; mutable bool boundSet; bool persist; mutable char error; char *localeName; SWLocale *getPrivateLocale() const; public: // misc storage for whatever __u64 userData; /** initializes instance of SWKey from a string * All keys can be reduced to a string representation which should be able * to be used to again set the key to the same position * @param ikey string to use for initializing this new key */ SWKey(const char *ikey = 0); /** Copy Constructor * @param k The SWKey object to copy. */ SWKey(const SWKey &k); /** Destructor, cleans up this instance of SWKey */ virtual ~SWKey(); /** Returns a new exact clone of this SWKey object. This allocates * a new SWKey which must be deleted by the caller * @return new clone of this key */ virtual SWKey *clone() const; /** Gets whether this key should persist in any module to which it is set * otherwise just a copy will be used in the module. * @return 1 - persists in module; 0 - a copy is attempted */ bool isPersist() const; SWDEPRECATED char Persist() const { return isPersist(); } /** Sets whether this key should persist in any module to which it is set * otherwise just a copy will be used in the module. * @param ipersist value which to set persist; * @return 1 - persists in module; 0 - a copy is attempted */ SWDEPRECATED char Persist(signed char ipersist) { setPersist(ipersist!=0); return isPersist(); } void setPersist(bool ipersist); /** Gets and clears error status * @return error status */ SWDEPRECATED char Error() { return popError(); } virtual char popError(); virtual char getError() { return error; } virtual void setError(char err) { error = err; } /** Sets this SWKey with a character string * @param ikey string used to set this key */ virtual void setText(const char *ikey); /** Copies as much info (position, range, etc.) as possible from another SWKey object * @param ikey other SWKey object from which to copy */ virtual void copyFrom(const SWKey &ikey); virtual void positionFrom(const SWKey &ikey) { copyFrom(ikey); } /** returns string representation of this key */ virtual const char *getText() const; virtual const char *getShortText() const { return getText(); } virtual const char *getRangeText() const; virtual const char *getOSISRefRangeText() const; virtual bool isBoundSet() const { return boundSet; } virtual void clearBound() const { boundSet = false; } /** Compares this key object to another SWKey object * @param ikey key to compare with this one * @return >0 if this key is greater than compare key; * <0 if this key is smaller than compare key; * 0 if the keys are the same */ virtual int compare(const SWKey &ikey); /** test equality of this SWKey object's position with another SWKey * @param ikey key to compare with this one * @return true if the key positions are equal */ virtual bool equals(const SWKey &ikey) { return !compare(ikey); } virtual void setPosition(SW_POSITION); /** Decrements key a number of entry positions * This is only valid if isTraversable is true * @param steps Number of entries to jump backward */ virtual void decrement(int steps = 1); /** Increments key a number of entry positions * This is only valid if isTraversable is true * @param steps Number of entries to jump forward */ virtual void increment(int steps = 1); /** Whether or not this key can be ++ -- incremented */ virtual bool isTraversable() const { return false; } char *getLocale() const { return localeName; } void setLocale(const char *name) { stdstr(&localeName, name); locale = 0; } // this will force an on demand lookup of our locale /** Use this function to get an index position within a module. */ virtual long getIndex() const { return index; } /** See documentation for @ref Index() */ virtual void setIndex(long iindex) { index = iindex; } SWKEY_OPERATORS }; SWORD_NAMESPACE_END #endif