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greg |
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#ifndef lint
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static const char RCSid[] = "$Id: object.c,v 1.7 2011/01/14 05:46:12 greg Exp $";
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#endif
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/*
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* Header file for tracking hierarchical object names
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "mgf_parser.h"
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int obj_nnames; /* depth of name hierarchy */
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char **obj_name; /* name list */
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static int obj_maxname; /* allocated list size */
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#define ALLOC_INC 16 /* list increment ( > 1 ) */
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int
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obj_handler(int ac, char **av) /* handle an object entity statement */
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{
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if (ac == 1) { /* just pop top object */
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if (obj_nnames < 1)
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return(MG_ECNTXT);
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free(obj_name[--obj_nnames]);
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obj_name[obj_nnames] = NULL;
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return(MG_OK);
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}
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if (ac != 2)
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return(MG_EARGC);
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if (!isname(av[1]))
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return(MG_EILL);
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if (obj_nnames >= obj_maxname-1) { /* enlarge array */
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if (!obj_maxname)
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obj_name = (char **)malloc(
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(obj_maxname=ALLOC_INC)*sizeof(char *));
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else
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obj_name = (char **)realloc(obj_name,
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(obj_maxname+=ALLOC_INC)*sizeof(char *));
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if (obj_name == NULL)
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return(MG_EMEM);
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}
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/* allocate new entry */
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obj_name[obj_nnames] = (char *)malloc(strlen(av[1])+1);
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if (obj_name[obj_nnames] == NULL)
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return(MG_EMEM);
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strcpy(obj_name[obj_nnames++], av[1]);
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obj_name[obj_nnames] = NULL;
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return(MG_OK);
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}
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void
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obj_clear(void) /* clear object stack */
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{
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while (obj_nnames)
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free(obj_name[--obj_nnames]);
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if (obj_maxname) {
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free(obj_name);
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obj_maxname = 0;
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}
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}
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