trunk/test/redirectStdStreams.h

/*
 *  Standard stream redirection for ASCEND unit tests
 *
 *  Copyright (C) 2005 Jerry St.Clair
 *
 *  This file is part of the Ascend Environment.
 *
 *  The Ascend Environment is free software; you can redistribute it
 *  and/or modify it under the terms of the GNU General Public License as
 *  published by the Free Software Foundation; either version 2 of the
 *  License, or (at your option) any later version.
 *
 *  The Ascend Environment is distributed in hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with the program; if not, write to the Free Software Foundation,
 *  Inc., 675 Mass Ave, Cambridge, MA 02139 USA.  Check the file named
 *  COPYING.
 */

/** @file
 *  Centralized redirection of standard streams to file.
 *  Many ASCEND routines print messages.  In a testing context, it
 *  is usually preferable to have output redirected to a file.  This
 *  module provides a centralized location for this code (which may
 *  end up somewhat platform-dependent).
 *  <pre>
 *  Requires:     #include <stdio.h>
 *                #include "utilities/ascConfig.h"
 *
 */

#ifndef REDIRECTSTDSTREAMS_H_SEEN
#define REDIRECTSTDSTREAMS_H_SEEN

FILE *redirect_stderr(CONST char *filename);
/**<
 *  Redirects stderr to the specified file.
 *  Returns a pointer to the new stream.  If stderr was already being
 *  redirected to a file, the previous file is closed before the new
 *  redirection is set up.  Returns NULL if stderr could not be
 *  redirected.
 */

FILE *reset_stderr(void);
/**<
 *  Restores stderr to the console.
 *  This function closes the redirection file (if any) and
 *  restores stderr to console output.  It returns a pointer
 *  to the new stderr stream.  Returns NULL if stderr could not
 *  be reset.

 */

FILE *redirect_stdin(CONST char *filename);
/**<
 *  Redirects stdin to the specified file.
 *  Returns a pointer to the new stream.  If stdin was already being
 *  redirected to a file, the previous file is closed before the new
 *  redirection is set up.  Returns NULL if stdin could not be
 *  redirected.
 */

FILE *reset_stdin(void);
/**<
 *  Restores stdin to the console.
 *  This function closes the redirection file (if any) and
 *  restores stdin to console output.  It returns a pointer
 *  to the new stdin stream.  Returns NULL if stdin could not 
 *  be reset.
 */

FILE *redirect_stdout(CONST char *filename);
/**<
 *  Redirects stdout to the specified file.
 *  Returns a pointer to the new stream.  If stdout was already being
 *  redirected to a file, the previous file is closed before the new
 *  redirection is set up.  Returns NULL if stdout could not be
 *  redirected.
 */

FILE *reset_stdout(void);
/**<
 *  Restores stdout to the console.
 *  This function closes the redirection file (if any) and
 *  restores stdout to console output.  It returns a pointer
 *  to the new stdout stream.  Returns NULL if stdout could not
 *  be reset.
 */

#endif  /* REDIRECTSTDSTREAMS_H_SEEN */
1	/*
2	* Standard stream redirection for ASCEND unit tests
3	*
4	* Copyright (C) 2005 Jerry St.Clair
5	*
6	* This file is part of the Ascend Environment.
7	*
8	* The Ascend Environment is free software; you can redistribute it
9	* and/or modify it under the terms of the GNU General Public License as
10	* published by the Free Software Foundation; either version 2 of the
11	* License, or (at your option) any later version.
12	*
13	* The Ascend Environment is distributed in hope that it will be useful,
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16	* General Public License for more details.
17	*
18	* You should have received a copy of the GNU General Public License
19	* along with the program; if not, write to the Free Software Foundation,
20	* Inc., 675 Mass Ave, Cambridge, MA 02139 USA. Check the file named
21	* COPYING.
22	*/
23
24	/** @file
25	* Centralized redirection of standard streams to file.
26	* Many ASCEND routines print messages. In a testing context, it
27	* is usually preferable to have output redirected to a file. This
28	* module provides a centralized location for this code (which may
29	* end up somewhat platform-dependent).
30	* <pre>
31	* Requires: #include <stdio.h>
32	* #include "utilities/ascConfig.h"
33	*
34	*/
35
36	#ifndef REDIRECTSTDSTREAMS_H_SEEN
37	#define REDIRECTSTDSTREAMS_H_SEEN
38
39	FILE redirect_stderr(CONST char filename);
40	/**<
41	* Redirects stderr to the specified file.
42	* Returns a pointer to the new stream. If stderr was already being
43	* redirected to a file, the previous file is closed before the new
44	* redirection is set up. Returns NULL if stderr could not be
45	* redirected.
46	*/
47
48	FILE *reset_stderr(void);
49	/**<
50	* Restores stderr to the console.
51	* This function closes the redirection file (if any) and
52	* restores stderr to console output. It returns a pointer
53	* to the new stderr stream. Returns NULL if stderr could not
54	* be reset.
55
56	*/
57
58	FILE redirect_stdin(CONST char filename);
59	/**<
60	* Redirects stdin to the specified file.
61	* Returns a pointer to the new stream. If stdin was already being
62	* redirected to a file, the previous file is closed before the new
63	* redirection is set up. Returns NULL if stdin could not be
64	* redirected.
65	*/
66
67	FILE *reset_stdin(void);
68	/**<
69	* Restores stdin to the console.
70	* This function closes the redirection file (if any) and
71	* restores stdin to console output. It returns a pointer
72	* to the new stdin stream. Returns NULL if stdin could not
73	* be reset.
74	*/
75
76	FILE redirect_stdout(CONST char filename);
77	/**<
78	* Redirects stdout to the specified file.
79	* Returns a pointer to the new stream. If stdout was already being
80	* redirected to a file, the previous file is closed before the new
81	* redirection is set up. Returns NULL if stdout could not be
82	* redirected.
83	*/
84
85	FILE *reset_stdout(void);
86	/**<
87	* Restores stdout to the console.
88	* This function closes the redirection file (if any) and
89	* restores stdout to console output. It returns a pointer
90	* to the new stdout stream. Returns NULL if stdout could not
91	* be reset.
92	*/
93
94	#endif /* REDIRECTSTDSTREAMS_H_SEEN */