C++ (Cpp) stack_param_list_read Examples

Example #1

File: ziodev2.c Project: hackqiang/gs

/* <mark> <name> <value> ... <iodevice> .putdevparams */
static int
zputdevparams(i_ctx_t *i_ctx_p)
{
    os_ptr op = osp;
    gx_io_device *iodev;
    stack_param_list list;
    gs_param_list *const plist = (gs_param_list *) & list;
    int code;
    password system_params_password;

    check_read_type(*op, t_string);
    iodev = gs_findiodevice(imemory, op->value.bytes, r_size(op));
    if (iodev == 0)
        return_error(e_undefined);
    code = stack_param_list_read(&list, &o_stack, 1, NULL, false, iimemory);
    if (code < 0)
        return code;
    code = dict_read_password(&system_params_password, systemdict,
                              "SystemParamsPassword");
    if (code < 0)
        return code;
    code = param_check_password(plist, &system_params_password);
    if (code != 0) {
        iparam_list_release(&list);
        return_error(code < 0 ? code : e_invalidaccess);
    }
    code = gs_putdevparams(iodev, plist);
    iparam_list_release(&list);
    if (code < 0)
        return code;
    ref_stack_pop(&o_stack, list.count * 2 + 2);
    return 0;
}

Example #2

File: zdevice.c Project: MasterPlexus/vendor_goldenve

/* Note that .putdeviceparams clears the current pagedevice. */
static int
zputdeviceparams(i_ctx_t *i_ctx_p)
{
    uint count = ref_stack_counttomark(&o_stack);
    ref *prequire_all;
    ref *ppolicy;
    ref *pdev;
    gx_device *dev;
    stack_param_list list;
    int code;
    int old_width, old_height;
    int i, dest;

    if (count == 0)
	return_error(e_unmatchedmark);
    prequire_all = ref_stack_index(&o_stack, count);
    ppolicy = ref_stack_index(&o_stack, count + 1);
    pdev = ref_stack_index(&o_stack, count + 2);
    if (pdev == 0)
	return_error(e_stackunderflow);
    check_type_only(*prequire_all, t_boolean);
    check_write_type_only(*pdev, t_device);
    dev = pdev->value.pdevice;
    code = stack_param_list_read(&list, &o_stack, 0, ppolicy,
				 prequire_all->value.boolval, iimemory);
    if (code < 0)
	return code;
    old_width = dev->width;
    old_height = dev->height;
    code = gs_putdeviceparams(dev, (gs_param_list *) & list);
    /* Check for names that were undefined or caused errors. */
    for (dest = count - 2, i = 0; i < count >> 1; i++)
	if (list.results[i] < 0) {
	    *ref_stack_index(&o_stack, dest) =
		*ref_stack_index(&o_stack, count - (i << 1) - 2);
	    gs_errorname(i_ctx_p, list.results[i],
			 ref_stack_index(&o_stack, dest - 1));
	    dest -= 2;
	}
    iparam_list_release(&list);
    if (code < 0) {		/* There were errors reported. */
	ref_stack_pop(&o_stack, dest + 1);
	return 0;
    }
    if (code > 0 || (code == 0 && (dev->width != old_width || dev->height != old_height))) {
	/*
	 * The device was open and is now closed, or its dimensions have
	 * changed.  If it was the current device, call setdevice to
	 * reinstall it and erase the page.
	 */
	/****** DOESN'T FIND ALL THE GSTATES THAT REFERENCE THE DEVICE. ******/
	if (gs_currentdevice(igs) == dev) {
	    bool was_open = dev->is_open;

	    code = gs_setdevice_no_erase(igs, dev);
	    /* If the device wasn't closed, setdevice won't erase the page. */
	    if (was_open && code >= 0)
		code = 1;
	}
    }
    if (code < 0)
	return code;
    ref_stack_pop(&o_stack, count + 1);
    make_bool(osp, code);
    clear_pagedevice(istate);
    return 0;
}