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66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
/*
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* psql - the PostgreSQL interactive terminal
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*
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* Copyright 2000 by PostgreSQL Global Development Group
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*
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* $Header: /cvsroot/pgsql/src/bin/psql/variables.h,v 1.13 2003/08/04 00:43:29 momjian Exp $
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*/
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/*
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* This implements a sort of variable repository. One could also think of it
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* as cheap version of an associative array. In each one of these
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* datastructures you can store name/value pairs.
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*/
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#ifndef VARIABLES_H
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#define VARIABLES_H
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#define VALID_VARIABLE_CHARS "abcdefghijklmnopqrstuvwxyz"\
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ" "0123456789_"
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struct _variable
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{
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char *name;
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char *value;
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struct _variable *next;
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};
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typedef struct _variable *VariableSpace;
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VariableSpace CreateVariableSpace(void);
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const char *GetVariable(VariableSpace space, const char *name);
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bool GetVariableBool(VariableSpace space, const char *name);
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bool VariableEquals(VariableSpace space, const char name[], const char *opt);
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/* Read numeric variable, or defaultval if it is not set, or faultval if its
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* value is not a valid numeric string. If allowtrail is false, this will
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* include the case where there are trailing characters after the number.
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*/
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int GetVariableNum(VariableSpace space,
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const char name[],
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int defaultval,
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int faultval,
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bool allowtrail);
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/* Find value of variable <name> among NULL-terminated list of alternative
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* options. Returns VAR_NOTSET if the variable was not set, VAR_NOTFOUND
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* if its value did not occur in the list of options, or the number of the
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* matching option. The first option is 1, the second is 2 and so on.
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*/
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enum
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{
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VAR_NOTSET = 0, VAR_NOTFOUND = -1};
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int
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SwitchVariable(VariableSpace space, const char name[],
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const char *opt,...);
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void PrintVariables(VariableSpace space);
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bool SetVariable(VariableSpace space, const char *name, const char *value);
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bool SetVariableBool(VariableSpace space, const char *name);
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bool DeleteVariable(VariableSpace space, const char *name);
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#endif /* VARIABLES_H */
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