149 lines
2.7 KiB
C
149 lines
2.7 KiB
C
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/***************************************************************************
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subr_extern.c
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Extern help subroutines
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(c) 2000-2005 Beno<EFBFBD>t Minisini <gambas@users.sourceforge.net>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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***************************************************************************/
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#include <sys/wait.h>
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#include "gb_common.h"
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#include "gb_alloc.h"
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#include "gb_common_check.h"
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#include "gbx_subr.h"
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PUBLIC void SUBR_alloc(void)
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{
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int size;
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int count;
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void *ptr;
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char *copy;
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SUBR_ENTER();
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if (NPARAM == 2)
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count = SUBR_get_integer(&PARAM[1]);
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else
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count = 1;
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if (TYPE_is_null(PARAM->type))
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{
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size = 1;
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copy = NULL;
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}
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if (TYPE_is_string(PARAM->type))
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{
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size = PARAM->_string.len + 1;
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copy = PARAM->_string.addr + PARAM->_string.start;
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}
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else
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{
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size = SUBR_get_integer(PARAM);
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copy = NULL;
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}
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if (count <= 0 || size <= 0)
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THROW(E_ARG);
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ALLOC(&ptr, size * count, "SUBR_alloc");
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if (copy)
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{
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size--;
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memcpy(ptr, copy, size);
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((char *)ptr)[size] = 0;
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}
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RETURN->type = T_INTEGER;
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RETURN->_integer.value = (int)ptr;
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SUBR_LEAVE();
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}
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PUBLIC void SUBR_free(void)
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{
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void *ptr;
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SUBR_ENTER_PARAM(1);
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ptr = (void *)SUBR_get_integer(PARAM);
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FREE(&ptr, "SUBR_free");
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SUBR_LEAVE_VOID();
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}
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PUBLIC void SUBR_realloc(void)
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{
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int size;
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int count;
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void *ptr;
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SUBR_ENTER();
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if (NPARAM == 3)
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size = SUBR_get_integer(&PARAM[2]);
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else
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size = 1;
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count = SUBR_get_integer(&PARAM[1]);
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if (size <= 0 || count <= 0)
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THROW(E_ARG);
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ptr = (void *)SUBR_get_integer(&PARAM[0]);
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REALLOC(&ptr, size * count, "SUBR_realloc");
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RETURN->type = T_INTEGER;
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RETURN->_integer.value = (int)ptr;
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SUBR_LEAVE();
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}
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PUBLIC void SUBR_strptr(void)
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{
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char *ptr;
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int len = 0;
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SUBR_ENTER_PARAM(1);
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ptr = (char *)SUBR_get_integer(PARAM);
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if (CHECK_strlen(ptr, &len))
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{
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RETURN->type = T_NULL;
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}
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else
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{
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RETURN->type = T_CSTRING;
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RETURN->_string.addr = ptr;
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RETURN->_string.start = 0;
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RETURN->_string.len = len;
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}
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SUBR_LEAVE();
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}
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