1 rizwank 1.1 /*
 2              * Printer interface for popen() / lpr systems.
 3              * Copyright (c) 1995-1999 Markku Rossi.
 4              *
 5              * Author: Markku Rossi <mtr@iki.fi>
 6              */
 7             
 8             /*
 9              * This file is part of GNU enscript.
10              *
11              * This program is free software; you can redistribute it and/or modify
12              * it under the terms of the GNU General Public License as published by
13              * the Free Software Foundation; either version 2, or (at your option)
14              * any later version.
15              *
16              * This program is distributed in the hope that it will be useful,
17              * but WITHOUT ANY WARRANTY; without even the implied warranty of
18              * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19              * GNU General Public License for more details.
20              *
21              * You should have received a copy of the GNU General Public License
22 rizwank 1.1  * along with this program; see the file COPYING.  If not, write to
23              * the Free Software Foundation, 59 Temple Place - Suite 330,
24              * Boston, MA 02111-1307, USA.
25              */
26             
27             #include "gsint.h"
28             
29             /*
30              * Global functions.
31              */
32             
33             FILE *
34             printer_open(char *cmd, char *options, char *queue_param, char *printer_name,
35             	     void **context_return)
36             {
37               Buffer pipe_cmd;
38               FILE *fp;
39             
40               buffer_init(&pipe_cmd);
41             
42               buffer_append(&pipe_cmd, cmd);
43 rizwank 1.1   buffer_append(&pipe_cmd, " ");
44             
45               if (options)
46                 {
47                   buffer_append(&pipe_cmd, options);
48                   buffer_append(&pipe_cmd, " ");
49                 }
50             
51               if (printer_name)
52                 {
53                   buffer_append(&pipe_cmd, queue_param);
54                   buffer_append(&pipe_cmd, printer_name);
55                 }
56             
57               fp = popen(buffer_ptr(&pipe_cmd), "w");
58             
59               buffer_uninit(&pipe_cmd);
60             
61               *context_return = fp;
62               return fp;
63             }
64 rizwank 1.1 
65             
66             void
67             printer_close(void *context)
68             {
69               FILE *fp = (FILE *) context;
70             
71               pclose(fp);
72             }