mirror of
https://github.com/FirebirdSQL/firebird.git
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126 lines
4.0 KiB
C++
126 lines
4.0 KiB
C++
/*
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* PROGRAM: Client/Server Common Code
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* MODULE: MetaName.h
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* DESCRIPTION: metadata name holder
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*
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* The contents of this file are subject to the Initial
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* Developer's Public License Version 1.0 (the "License");
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* you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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* http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
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*
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* Software distributed under the License is distributed AS IS,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied.
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* See the License for the specific language governing rights
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* and limitations under the License.
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*
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* The Original Code was created by Alexander Peshkov
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* for the Firebird Open Source RDBMS project.
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*
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* Copyright (c) 2005 Alexander Peshkov <peshkoff@mail.ru>
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* and all contributors signed below.
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*
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* All Rights Reserved.
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* Contributor(s): ______________________________________.
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*
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*
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*/
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#ifndef METANAME_H
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#define METANAME_H
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#include "../common/classes/fb_string.h"
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#include "../common/classes/fb_pair.h"
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#include "../jrd/constants.h"
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#ifdef SFIO
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#include <stdio.h>
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#endif
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namespace Firebird {
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class MetaName
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{
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private:
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char data[MAX_SQL_IDENTIFIER_SIZE];
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unsigned int count;
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void init()
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{
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memset(data, 0, MAX_SQL_IDENTIFIER_SIZE);
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}
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MetaName& set(const MetaName& m)
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{
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memcpy(data, m.data, MAX_SQL_IDENTIFIER_SIZE);
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count = m.count;
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return *this;
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}
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public:
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MetaName() { init(); count = 0; }
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MetaName(const char* s) { assign(s); }
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MetaName(const char* s, size_t l) { assign(s, l); }
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MetaName(const MetaName& m) { set(m); }
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MetaName(const AbstractString& s) { assign(s.c_str(), s.length()); }
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explicit MetaName(MemoryPool&) { init(); count = 0; }
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MetaName(MemoryPool&, const char* s) { assign(s); }
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MetaName(MemoryPool&, const char* s, size_t l) { assign(s, l); }
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MetaName(MemoryPool&, const MetaName& m) { set(m); }
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MetaName(MemoryPool&, const AbstractString& s) { assign(s.c_str(), s.length()); }
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MetaName& assign(const char* s, size_t l);
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MetaName& assign(const char* s) { return assign(s, s ? strlen(s) : 0); }
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MetaName& operator=(const char* s) { return assign(s); }
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MetaName& operator=(const string& s) { return assign(s.c_str(), s.length()); }
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MetaName& operator=(const MetaName& m) { return set(m); }
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char* getBuffer(const size_t l);
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size_t length() const { return count; }
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const char* c_str() const { return data; }
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const char* nullStr() const { return (count == 0 ? NULL : data); }
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bool isEmpty() const { return count == 0; }
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bool hasData() const { return count != 0; }
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const char* begin() const { return data; }
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const char* end() const { return data + count; }
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int compare(const char* s, size_t l) const;
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int compare(const char* s) const { return compare(s, s ? strlen(s) : 0); }
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int compare(const MetaName& m) const { return memcmp(data, m.data, MAX_SQL_IDENTIFIER_SIZE); }
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bool operator==(const char* s) const { return compare(s) == 0; }
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bool operator!=(const char* s) const { return compare(s) != 0; }
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bool operator==(const MetaName& m) const { return compare(m) == 0; }
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bool operator!=(const MetaName& m) const { return compare(m) != 0; }
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bool operator<=(const MetaName& m) const { return compare(m) <= 0; }
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bool operator>=(const MetaName& m) const { return compare(m) >= 0; }
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bool operator< (const MetaName& m) const { return compare(m) < 0; }
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bool operator> (const MetaName& m) const { return compare(m) > 0; }
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void upper7();
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void lower7();
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void printf(const char*, ...);
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protected:
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static void adjustLength(const char* const s, size_t& l);
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};
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// This class is used to simplify calls from GDML, when pointer to MetaName
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// should be passed to some function, at the same time reflecting changes in
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// associated GDML variable (database field).
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class MetaNameProxy : public MetaName
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{
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char* target;
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public:
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explicit MetaNameProxy(char* s)
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: Firebird::MetaName(s), target(s)
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{ }
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~MetaNameProxy() { strcpy(target, c_str()); }
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};
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typedef Pair<Full<MetaName, MetaName> > MetaNamePair;
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} // namespace Firebird
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#endif // METANAME_H
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