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/* Copyright (C) 1993, 1994, 1996 Aladdin Enterprises. All rights reserved.
This file is part of Aladdin Ghostscript.
Aladdin Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author
or distributor accepts any responsibility for the consequences of using it,
or for whether it serves any particular purpose or works at all, unless he
or she says so in writing. Refer to the Aladdin Ghostscript Free Public
License (the "License") for full details.
Every copy of Aladdin Ghostscript must include a copy of the License,
normally in a plain ASCII text file named PUBLIC. The License grants you
the right to copy, modify and redistribute Aladdin Ghostscript, but only
under certain conditions described in the License. Among other things, the
License requires that the copyright notice and this notice be preserved on
all copies.
*/
/* ziodev2.c */
/* (Level 2) IODevice operators */
#include "string_.h"
#include "ghost.h"
#include "gp.h"
#include "errors.h"
#include "oper.h"
#include "stream.h"
#include "gxiodev.h"
#include "files.h" /* for file_open_stream */
#include "iparam.h"
#include "iutil2.h"
#include "store.h"
/* ------ %null% ------ */
/* This represents the null output file. */
private iodev_proc_open_device(null_open);
gx_io_device gs_iodev_null =
{ "%null%", "FileSystem",
{ iodev_no_init, null_open, iodev_no_open_file,
iodev_os_fopen, iodev_os_fclose,
iodev_no_delete_file, iodev_no_rename_file, iodev_no_file_status,
iodev_no_enumerate_files, NULL, NULL,
iodev_no_get_params, iodev_no_put_params
}
};
private int
null_open(gx_io_device *iodev, const char *access, stream **ps,
gs_memory_t *mem)
{ if ( !streq1(access, 'w') )
return_error(e_invalidfileaccess);
return file_open_stream(gp_null_file_name,
strlen(gp_null_file_name),
access, 256 /* arbitrary */, ps,
iodev->procs.fopen);
}
/* ------ %ram% ------ */
/* This is an IODevice with no interesting parameters for the moment. */
gx_io_device gs_iodev_ram =
{ "%ram%", "Special",
{ iodev_no_init, iodev_no_open_device, iodev_no_open_file,
iodev_no_fopen, iodev_no_fclose,
iodev_no_delete_file, iodev_no_rename_file, iodev_no_file_status,
iodev_no_enumerate_files, NULL, NULL,
iodev_no_get_params, iodev_no_put_params
}
};
/* ------ Operators ------ */
/* <iodevice> .getdevparams <mark> <name> <value> ... */
private int
zgetdevparams(os_ptr op)
{
gx_io_device *iodev;
stack_param_list list;
int code;
ref *pmark;
check_read_type(*op, t_string);
iodev = gs_findiodevice(op->value.bytes, r_size(op));
if ( iodev == 0 )
return_error(e_undefinedfilename);
stack_param_list_write(&list, &o_stack, NULL);
#define plist ((gs_param_list *)&list)
code = gs_getdevparams(iodev, plist);
if (code < 0)
{ ref_stack_pop(&o_stack, list.count * 2);
return code;
}
#undef plist
pmark = ref_stack_index(&o_stack, list.count * 2);
make_mark(pmark);
return 0;
}
/* <mark> <name> <value> ... <iodevice> .putdevparams */
private int
zputdevparams(os_ptr op)
{ gx_io_device *iodev;
stack_param_list list;
int code;
check_read_type(*op, t_string);
iodev = gs_findiodevice(op->value.bytes, r_size(op));
if ( iodev == 0 )
return_error(e_undefinedfilename);
code = stack_param_list_read(&list, &o_stack, 1, NULL, false);
if ( code < 0 )
return code;
#define plist ((gs_param_list *)&list)
code = param_check_password(plist, &SystemParamsPassword);
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;
#undef plist
ref_stack_pop(&o_stack, list.count * 2 + 2);
return 0;
}
/* ------ Initialization procedure ------ */
BEGIN_OP_DEFS(ziodev2_l2_op_defs) {
op_def_begin_level2(),
{"1.getdevparams", zgetdevparams},
{"2.putdevparams", zputdevparams},
END_OP_DEFS(0) }
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