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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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} |
