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comparison util.c @ 0:a9a7ad180c3b version-1

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Initial revision
author Guido Berhoerster <guido+rantaiwarna@berhoerster.name>
date Sat, 15 Mar 2014 18:41:03 +0100
parents
children 4f6bf50dbc4a
comparison
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-1:000000000000 0:a9a7ad180c3b
1 /*
2 * Copyright (C) 2014 Guido Berhoerster <guido+rantaiwarna@berhoerster.name>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included
13 * in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 */
23
24 #define _XOPEN_SOURCE 600
25
26 #include <stdlib.h>
27 #include <string.h>
28 #include <stdio.h>
29 #include <errno.h>
30 #include <curses.h>
31 #include <term.h>
32 #include <stdarg.h>
33
34 #include "util.h"
35 #include "compat.h"
36 #include "rantaiwarna.h"
37
38 void
39 restore_term(void) {
40 if (curses_init) {
41 endwin();
42 curses_init = FALSE;
43 curs_set(1);
44 }
45 }
46
47 void
48 rantaiwarna_err(int eval, const char *fmt, ...)
49 {
50 int saved_errno = errno;
51 va_list args;
52
53 restore_term();
54
55 fprintf(stderr, "%s: ", progname);
56 va_start(args, fmt);
57 if (fmt != NULL) {
58 vfprintf(stderr, fmt, args);
59 fprintf(stderr, ": ");
60 }
61 va_end(args);
62 fprintf(stderr, "%s\n", strerror(saved_errno));
63
64 exit(eval);
65 }
66
67 void
68 rantaiwarna_errx(int eval, const char *fmt, ...)
69 {
70 va_list args;
71
72 restore_term();
73
74 fprintf(stderr, "%s: ", progname);
75 va_start(args, fmt);
76 if (fmt != NULL) {
77 vfprintf(stderr, fmt, args);
78 }
79 va_end(args);
80 fputc('\n', stderr);
81
82 exit(eval);
83 }
84
85 void *
86 rantaiwarna_malloc(size_t size)
87 {
88 void *ptr;
89
90 ptr = malloc(size);
91 if (ptr == NULL) {
92 rantaiwarna_err(1, NULL);
93 }
94 return (ptr);
95 }
96
97 void *
98 rantaiwarna_calloc(size_t nelem, size_t elsize)
99 {
100 void *ptr;
101
102 ptr = calloc(nelem, elsize);
103 if (ptr == NULL) {
104 rantaiwarna_err(1, NULL);
105 }
106 return (ptr);
107 }
108
109 uint32_t
110 rantaiwarna_rand(uint32_t *seed)
111 {
112 uint32_t x = *seed;
113
114 x ^= x << 13;
115 x ^= x >> 17;
116 x ^= x << 5;
117 *seed = x;
118
119 return (x);
120 }