49 lines
1.2 KiB
C
49 lines
1.2 KiB
C
/* ************************************************************************
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*
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* Varray.c
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*
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* routines to provide a generic set of functions to handle variable sized
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* arrays. originally by Jiang Wu
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* ************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include "Varray.h"
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Varray *
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NewVarray(size_t nobj, size_t size)
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/*
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* NewVarray -- allocate a Varray to contain an array of val each of which
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* is size valSize. Returns the Varray if successful,
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* returns NULL otherwise.
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*/
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{
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Varray *result;
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if (nobj == 0)
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nobj = VARRAY_INITIAL_SIZE;
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result = (Varray *) malloc(sizeof(Varray));
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result->val = (void *) calloc(nobj, size);
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if (result == NULL)
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return NULL;
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result->size = size;
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result->nobj = 0;
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result->maxObj = nobj;
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return result;
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}
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int
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AppendVarray(Varray * array, void *value, CopyingFunct copy)
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/*
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* AppendVarray -- append value to the end of array. This function
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* returns the size of the array after the addition of
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* the new element.
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*/
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{
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copy(value, VARRAY_NTH(array->val, array->size, array->nobj));
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array->nobj++;
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if (array->nobj >= array->maxObj)
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ENLARGE_VARRAY(array, array->maxObj / 2);
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return array->nobj;
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}
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