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60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/*********************************************************************
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* Copyright 1993, UCAR/Unidata
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* See netcdf/COPYRIGHT file for copying and redistribution conditions.
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* $Header$
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*********************************************************************/
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#ifndef NCHASHMAP_H
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#define NCHASHMAP_H 1
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#if defined(_CPLUSPLUS_) || defined(__CPLUSPLUS__)
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#define externC extern "C"
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#else
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#define externC extern
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#endif
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#include "nclist.h"
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/* Define the type of the elements in the hashmap*/
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typedef unsigned long nchashid;
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externC int nchashnull(void*);
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typedef struct NChashmap {
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int alloc;
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int size; /* # of pairs still in table*/
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NClist** table;
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} NChashmap;
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externC NChashmap* nchashnew(void);
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externC NChashmap* nchashnew0(int);
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externC int nchashfree(NChashmap*);
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/* Insert a (ncnchashid,void*) pair into the table*/
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/* Fail if already there*/
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externC int nchashinsert(NChashmap*, nchashid nchash, void* value);
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/* Insert a (nchashid,void*) pair into the table*/
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/* Overwrite if already there*/
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externC int nchashreplace(NChashmap*, nchashid nchash, void* value);
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/* lookup a nchashid and return found/notfound*/
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externC int nchashlookup(NChashmap*, nchashid nchash, void** valuep);
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/* lookup a nchashid and return 0 or the value*/
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externC void* nchashget(NChashmap*, nchashid nchash);
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/* remove a nchashid*/
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externC int nchashremove(NChashmap*, nchashid nchash);
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/* Return the ith pair; order is completely arbitrary*/
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/* Can be expensive*/
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externC int nchashith(NChashmap*, int i, nchashid*, void**);
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externC int nchashkeys(NChashmap* hm, nchashid** keylist);
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/* return the # of pairs in table*/
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#define nchashsize(hm) ((hm)?(hm)->size:0)
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#endif /*NCHASHMAP_H*/
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