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1eee94d3 GM |
1 | /* Gwrapc.c wrap libc functions for mc. |
2 | ||
83ffe9cd | 3 | Copyright (C) 2005-2023 Free Software Foundation, Inc. |
1eee94d3 GM |
4 | Contributed by Gaius Mulley <gaius@glam.ac.uk>. |
5 | ||
6 | This file is part of GNU Modula-2. | |
7 | ||
8 | GNU Modula-2 is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GNU Modula-2 is distributed in the hope that it will be useful, but | |
14 | 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 GNU Modula-2; see the file COPYING3. If not see | |
20 | <http://www.gnu.org/licenses/>. */ | |
21 | ||
22 | #include "config.h" | |
23 | #include "system.h" | |
24 | #include "ansidecl.h" | |
25 | ||
26 | #include "gm2-libs-host.h" | |
27 | ||
28 | #ifdef __cplusplus | |
29 | extern "C" { | |
30 | #endif | |
31 | ||
32 | /* strtime returns the address of a string which describes the | |
33 | local time. */ | |
34 | ||
35 | char * | |
36 | wrapc_strtime (void) | |
37 | { | |
38 | #if defined(HAVE_CTIME) | |
39 | time_t clock = time ((time_t *)0); | |
40 | char *string = ctime (&clock); | |
41 | ||
42 | string[24] = (char)0; | |
43 | ||
44 | return string; | |
45 | #else | |
46 | return ""; | |
47 | #endif | |
48 | } | |
49 | ||
50 | int | |
51 | wrapc_filesize (int f, unsigned int *low, unsigned int *high) | |
52 | { | |
53 | struct stat s; | |
54 | int res = fstat (f, (struct stat *)&s); | |
55 | ||
56 | if (res == 0) | |
57 | { | |
58 | *low = (unsigned int)s.st_size; | |
59 | *high = (unsigned int)(s.st_size >> (sizeof (unsigned int) * 8)); | |
60 | } | |
61 | return res; | |
62 | } | |
63 | ||
64 | /* filemtime returns the mtime of a file, f. */ | |
65 | ||
66 | int | |
67 | wrapc_filemtime (int f) | |
68 | { | |
69 | struct stat s; | |
70 | ||
71 | if (fstat (f, (struct stat *)&s) == 0) | |
72 | return s.st_mtime; | |
73 | else | |
74 | return -1; | |
75 | } | |
76 | ||
77 | /* getrand returns a random number between 0..n-1 */ | |
78 | ||
79 | int | |
80 | wrapc_getrand (int n) | |
81 | { | |
82 | return rand () % n; | |
83 | } | |
84 | ||
85 | #if defined(HAVE_PWD_H) | |
86 | #include <pwd.h> | |
87 | ||
88 | char * | |
89 | wrapc_getusername (void) | |
90 | { | |
91 | return getpwuid (getuid ())->pw_gecos; | |
92 | } | |
93 | ||
94 | /* getnameuidgid fills in the, uid, and, gid, which represents | |
95 | user, name. */ | |
96 | ||
97 | void | |
98 | wrapc_getnameuidgid (char *name, int *uid, int *gid) | |
99 | { | |
100 | struct passwd *p = getpwnam (name); | |
101 | ||
102 | if (p == NULL) | |
103 | { | |
104 | *uid = -1; | |
105 | *gid = -1; | |
106 | } | |
107 | else | |
108 | { | |
109 | *uid = p->pw_uid; | |
110 | *gid = p->pw_gid; | |
111 | } | |
112 | } | |
113 | #else | |
114 | char * | |
115 | wrapc_getusername (void) | |
116 | { | |
117 | return "unknown"; | |
118 | } | |
119 | ||
120 | void | |
121 | wrapc_getnameuidgid (char *name, int *uid, int *gid) | |
122 | { | |
123 | *uid = -1; | |
124 | *gid = -1; | |
125 | } | |
126 | #endif | |
127 | ||
128 | int | |
129 | wrapc_signbit (double r) | |
130 | { | |
131 | #if defined(HAVE_SIGNBIT) | |
132 | ||
133 | /* signbit is a macro which tests its argument against sizeof(float), | |
134 | sizeof(double). */ | |
135 | return signbit (r); | |
136 | #else | |
137 | return 0; | |
138 | #endif | |
139 | } | |
140 | ||
141 | int | |
142 | wrapc_signbitl (long double r) | |
143 | { | |
144 | #if defined(HAVE_SIGNBITL) | |
145 | ||
146 | /* signbit is a macro which tests its argument against sizeof(float), | |
147 | sizeof(double). */ | |
148 | return signbitl (r); | |
149 | #else | |
150 | return 0; | |
151 | #endif | |
152 | } | |
153 | ||
154 | int | |
155 | wrapc_signbitf (float r) | |
156 | { | |
157 | #if defined(HAVE_SIGNBITF) | |
158 | ||
159 | /* signbit is a macro which tests its argument against sizeof(float), | |
160 | sizeof(double). */ | |
161 | return signbitf (r); | |
162 | #else | |
163 | return 0; | |
164 | #endif | |
165 | } | |
166 | ||
167 | /* init constructor for the module. */ | |
168 | ||
169 | void | |
170 | _M2_wrapc_init () | |
171 | { | |
172 | } | |
173 | ||
174 | /* finish deconstructor for the module. */ | |
175 | ||
176 | void | |
177 | _M2_wrapc_finish () | |
178 | { | |
179 | } | |
180 | ||
181 | #ifdef __cplusplus | |
182 | } | |
183 | #endif |