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/*
* psql - the PostgreSQL interactive terminal
*
* Copyright 2000 by PostgreSQL Global Development Group
*
* $Header: /cvsroot/pgsql/src/bin/psql/variables.h,v 1.5 2000/01/29 16:58:49 petere Exp $
*/
/*
* This implements a sort of variable repository. One could also think of it
* as cheap version of an associative array. In each one of these
* datastructures you can store name/value pairs.
*
* All functions (should) follow the Shit-In-Shit-Out (SISO) principle, i.e.,
* you can pass them NULL pointers and the like and they will return something
* appropriate.
*/
#ifndef VARIABLES_H
#define VARIABLES_H
#include <c.h>
#define VALID_VARIABLE_CHARS "abcdefghijklmnopqrstuvwxyz"\
"ABCDEFGHIJKLMNOPQRSTUVWXYZ" "0123456789_"
struct _variable
{
char *name;
char *value;
struct _variable *next;
};
typedef struct _variable *VariableSpace;
VariableSpace CreateVariableSpace(void);
const char *GetVariable(VariableSpace space, const char *name);
bool GetVariableBool(VariableSpace space, const char *name);
bool SetVariable(VariableSpace space, const char *name, const char *value);
bool DeleteVariable(VariableSpace space, const char *name);
void DestroyVariableSpace(VariableSpace space);
#endif /* VARIABLES_H */
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