Mercurial > molko

annotate libcore/core/util.c @ 226:dd7c8d4321a3

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
misc: miscellaneous cleanups
author David Demelier <markand@malikania.fr>
date Thu, 19 Nov 2020 10:17:04 +0100
parents d6f217a5e4b1
children befa2e855d3b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
39
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
1 /*
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
2 * util.c -- utilities
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
3 *
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
4 * Copyright (c) 2020 David Demelier <markand@malikania.fr>
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
5 *
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
6 * Permission to use, copy, modify, and/or distribute this software for any
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
7 * purpose with or without fee is hereby granted, provided that the above
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
8 * copyright notice and this permission notice appear in all copies.
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
9 *
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
17 */
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
18
198
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
19 #include <sys/stat.h>
185
7103d6574062 core: add nrand function
David Demelier <markand@malikania.fr>
parents: 182
diff changeset
20 #include <assert.h>
198
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
21 #include <errno.h>
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
22 #include <fcntl.h>
185
7103d6574062 core: add nrand function
David Demelier <markand@malikania.fr>
parents: 182
diff changeset
23 #include <stdlib.h>
198
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
24 #include <unistd.h>
185
7103d6574062 core: add nrand function
David Demelier <markand@malikania.fr>
parents: 182
diff changeset
25
39
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
26 #include <SDL.h>
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
27
198
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
28 #include "alloc.h"
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
29 #include "error.h"
39
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
30 #include "util.h"
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
31
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
32 void
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
33 delay(unsigned int ms)
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
34 {
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
35 SDL_Delay(ms);
9d1421c09dfb core: add more utilities to improve code simplicity
David Demelier <markand@malikania.fr>
parents:
diff changeset
36 }
185
7103d6574062 core: add nrand function
David Demelier <markand@malikania.fr>
parents: 182
diff changeset
37
198
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
38 char *
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
39 readall(const char *path)
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
40 {
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
41 int fd;
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
42 struct stat st;
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
43 char *str = NULL;
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
44 ssize_t nr;
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
45
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
46 if ((fd = open(path, O_RDONLY)) < 0 || fstat(fd, &st) < 0)
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
47 goto io_error;
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
48 if (!(str = alloc_zero(1, st.st_size + 1)))
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
49 goto alloc_error;
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
50 if ((nr = read(fd, str, st.st_size)) != st.st_size)
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
51 goto io_error;
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
52
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
53 return str;
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
54
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
55 io_error:
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
56 errorf("%s", strerror(errno));
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
57
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
58 alloc_error:
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
59 close(fd);
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
60 free(str);
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
61
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
62 return NULL;
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
63 }
d6f217a5e4b1 molko-js: add support for modules, closes #2514 @1h
David Demelier <markand@malikania.fr>
parents: 185
diff changeset
64
185
7103d6574062 core: add nrand function
David Demelier <markand@malikania.fr>
parents: 182
diff changeset
65 unsigned int
7103d6574062 core: add nrand function
David Demelier <markand@malikania.fr>
parents: 182
diff changeset
66 nrand(unsigned int lower, unsigned int upper)
7103d6574062 core: add nrand function
David Demelier <markand@malikania.fr>
parents: 182
diff changeset
67 {
7103d6574062 core: add nrand function
David Demelier <markand@malikania.fr>
parents: 182
diff changeset
68 assert(upper <= RAND_MAX);
7103d6574062 core: add nrand function
David Demelier <markand@malikania.fr>
parents: 182
diff changeset
69
7103d6574062 core: add nrand function
David Demelier <markand@malikania.fr>
parents: 182
diff changeset
70 return (rand() % (upper - lower + 1)) + lower;
7103d6574062 core: add nrand function
David Demelier <markand@malikania.fr>
parents: 182
diff changeset
71 }