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Import AnaGram (near-)release tree into Mercurial.
author David A. Holland
date Sat, 22 Dec 2007 17:52:45 -0500
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children 607e3be6bad8
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-1:000000000000 0:13d2b8934445
1 /*****
2
3 AnaGram Programming Examples
4
5 A Dos Script Language
6 Redirection Class Definition
7
8 Copyright 1993 Parsifal Software. All Rights Reserved.
9
10 This software is provided 'as-is', without any express or implied
11 warranty. In no event will the authors be held liable for any damages
12 arising from the use of this software.
13
14 Permission is granted to anyone to use this software for any purpose,
15 including commercial applications, and to alter it and redistribute it
16 freely, subject to the following restrictions:
17
18 1. The origin of this software must not be misrepresented; you must not
19 claim that you wrote the original software. If you use this software
20 in a product, an acknowledgment in the product documentation would be
21 appreciated but is not required.
22 2. Altered source versions must be plainly marked as such, and must not be
23 misrepresented as being the original software.
24 3. This notice may not be removed or altered from any source distribution.
25
26 *****/
27
28 #ifndef REDIRECT_H
29 #define REDIRECT_H
30 #include <sys/types.h>
31 #include <sys/stat.h>
32 #include <stdio.h>
33 #include <string.h>
34 #include <fcntl.h>
35
36 #if defined(__MSDOS__) || defined(__WINDOWS__)
37 #include <io.h>
38 #else
39 #include <unistd.h>
40 #include <stdlib.h>
41 #define O_TEXT 0
42 #define O_BINARY 0
43 #define tell(fd) lseek(fd, 0, SEEK_CUR)
44 /* This is only meant to compile, not run. (Unix) */
45 #define filelength(fd) ((void)(fd), 0)
46 #endif
47
48 #define STDIN 0
49 #define STDOUT 1
50 #define STDERR 2
51
52 class redirect {
53 int handle; // actual handle
54 int old_handle; // old handle
55 char name[L_tmpnam]; // temporary name, if any
56 int copy_flag; // is it live or is it memorex?
57 public:
58
59 // Constructors
60 redirect(int h);
61 redirect(int h, char *file_name, int append_flag = 0);
62 redirect(redirect &);
63
64 // Reset
65 friend redirect &reset(redirect &e) {
66 lseek(e.handle,0,0);
67 return e;
68 }
69
70 // Destructor
71 ~redirect();
72
73 // Save resultant file
74 friend char *save_file(redirect &s);
75
76 // Extract contents
77 friend char *content(redirect &s);
78 };
79
80 #endif