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firebird-mirror/src/common/classes/MetaName.h

114 lines
3.6 KiB
C++

/*
* PROGRAM: Client/Server Common Code
* MODULE: MetaName.h
* DESCRIPTION: metadata name holder
*
* The contents of this file are subject to the Initial
* Developer's Public License Version 1.0 (the "License");
* you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
* http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
*
* Software distributed under the License is distributed AS IS,
* WITHOUT WARRANTY OF ANY KIND, either express or implied.
* See the License for the specific language governing rights
* and limitations under the License.
*
* The Original Code was created by Alexander Peshkov
* for the Firebird Open Source RDBMS project.
*
* Copyright (c) 2005 Alexander Peshkov <peshkoff@mail.ru>
* and all contributors signed below.
*
* All Rights Reserved.
* Contributor(s): ______________________________________.
*
*
*/
#ifndef METANAME_H
#define METANAME_H
#include "../common/classes/fb_string.h"
#include "../jrd/constants.h"
namespace Firebird {
class MetaName {
private:
char data[MAX_SQL_IDENTIFIER_SIZE];
unsigned int count;
void init()
{
memset(data, 0, MAX_SQL_IDENTIFIER_SIZE);
}
MetaName& set(const MetaName& m)
{
memcpy(data, m.data, MAX_SQL_IDENTIFIER_SIZE);
count = m.count;
return *this;
}
public:
MetaName() { init(); count = 0; }
MetaName(const char* s) { assign(s); }
MetaName(const char* s, size_t l) { assign(s, l); }
MetaName(const MetaName& m) { set(m); }
MetaName(const string& s) { assign(s.c_str(), s.length()); }
explicit MetaName(MemoryPool&) { init(); count = 0; }
MetaName(MemoryPool&, const char* s) { assign(s); }
MetaName(MemoryPool&, const char* s, size_t l) { assign(s, l); }
MetaName(MemoryPool&, const MetaName& m) { set(m); }
MetaName(MemoryPool&, const string& s) { assign(s.c_str(), s.length()); }
MetaName& assign(const char* s, size_t l);
MetaName& assign(const char* s) { return assign(s, s ? strlen(s) : 0); }
MetaName& operator=(const char* s) { return assign(s); }
MetaName& operator=(const string& s) { return assign(s.c_str(), s.length()); }
MetaName& operator=(const MetaName& m) { return set(m); }
char* getBuffer(size_t l);
size_t length() const { return count; }
const char* c_str() const { return data; }
int compare(const char* s, size_t l) const;
int compare(const char* s) const { return compare(s, s ? strlen(s) : 0); }
int compare(const MetaName& m) const { return memcmp(data, m.data, MAX_SQL_IDENTIFIER_SIZE); }
bool operator==(const char* s) const { return compare(s) == 0; }
bool operator!=(const char* s) const { return compare(s) != 0; }
bool operator==(const MetaName& m) const { return compare(m) == 0; }
bool operator!=(const MetaName& m) const { return compare(m) != 0; }
bool operator<=(const MetaName& m) const { return compare(m) <= 0; }
bool operator>=(const MetaName& m) const { return compare(m) >= 0; }
bool operator< (const MetaName& m) const { return compare(m) < 0; }
bool operator> (const MetaName& m) const { return compare(m) > 0; }
void upper7();
void lower7();
void printf(const char*, ...);
protected:
static void adjustLength(const char* const s, size_t& l);
};
// This class & macro are used to simplify calls from GDML
class LoopMetaName : public Firebird::MetaName
{
bool flag;
char* target;
public:
LoopMetaName(char* s) : Firebird::MetaName(s),
flag(true), target(s) { }
~LoopMetaName() { strcpy(target, c_str()); }
operator bool() { return flag; }
void stop() { flag = false; }
};
#define MetaTmp(x) for (Firebird::LoopMetaName tmp(x); tmp; tmp.stop())
} // namespace Firebird
#endif // METANAME_H