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author | Thomas Martitz <kugel@rockbox.org> | 2010-05-06 21:04:40 +0000 |
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committer | Thomas Martitz <kugel@rockbox.org> | 2010-05-06 21:04:40 +0000 |
commit | 50a6ca39ad4ed01922aa4f755f0ca579788226cf (patch) | |
tree | c7881b015b220558167310345b162324c96be15a /firmware/libc/sprintf.c | |
parent | adb506df14aded06ed6e9ebf8540e6fd383ffd6a (diff) | |
download | rockbox-50a6ca39ad4ed01922aa4f755f0ca579788226cf.tar.gz rockbox-50a6ca39ad4ed01922aa4f755f0ca579788226cf.zip |
Move c/h files implementing/defining standard library stuff into a new libc directory, also standard'ify some parts of the code base (almost entirely #include fixes).
This is to a) to cleanup firmware/common and firmware/include a bit, but also b) for Rockbox as an application which should use the host system's c library and headers, separating makes it easy to exclude our files from the build.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25850 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/libc/sprintf.c')
-rw-r--r-- | firmware/libc/sprintf.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/firmware/libc/sprintf.c b/firmware/libc/sprintf.c new file mode 100644 index 0000000000..b02f5a2fae --- /dev/null +++ b/firmware/libc/sprintf.c | |||
@@ -0,0 +1,93 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Gary Czvitkovicz | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | |||
22 | /* | ||
23 | * Minimal printf and snprintf formatting functions | ||
24 | * | ||
25 | * These support %c %s %d and %x | ||
26 | * Field width and zero-padding flag only | ||
27 | */ | ||
28 | |||
29 | #include <stdio.h> | ||
30 | #include <stdarg.h> | ||
31 | #include <stdbool.h> | ||
32 | #include <limits.h> | ||
33 | #include "format.h" | ||
34 | |||
35 | /* ALSA library requires a more advanced snprintf, so let's not | ||
36 | override it in simulator for Linux. Note that Cygwin requires | ||
37 | our snprintf or it produces garbled output after a while. */ | ||
38 | |||
39 | struct for_snprintf { | ||
40 | unsigned char *ptr; /* where to store it */ | ||
41 | size_t bytes; /* amount already stored */ | ||
42 | size_t max; /* max amount to store */ | ||
43 | }; | ||
44 | |||
45 | static int sprfunc(void *ptr, unsigned char letter) | ||
46 | { | ||
47 | struct for_snprintf *pr = (struct for_snprintf *)ptr; | ||
48 | if(pr->bytes < pr->max) { | ||
49 | *pr->ptr = letter; | ||
50 | pr->ptr++; | ||
51 | pr->bytes++; | ||
52 | return true; | ||
53 | } | ||
54 | return false; /* filled buffer */ | ||
55 | } | ||
56 | |||
57 | |||
58 | int snprintf(char *buf, size_t size, const char *fmt, ...) | ||
59 | { | ||
60 | bool ok; | ||
61 | va_list ap; | ||
62 | struct for_snprintf pr; | ||
63 | |||
64 | pr.ptr = (unsigned char *)buf; | ||
65 | pr.bytes = 0; | ||
66 | pr.max = size; | ||
67 | |||
68 | va_start(ap, fmt); | ||
69 | ok = format(sprfunc, &pr, fmt, ap); | ||
70 | va_end(ap); | ||
71 | |||
72 | /* make sure it ends with a trailing zero */ | ||
73 | pr.ptr[(pr.bytes < pr.max) ? 0 : -1] = '\0'; | ||
74 | |||
75 | return pr.bytes; | ||
76 | } | ||
77 | |||
78 | int vsnprintf(char *buf, size_t size, const char *fmt, va_list ap) | ||
79 | { | ||
80 | bool ok; | ||
81 | struct for_snprintf pr; | ||
82 | |||
83 | pr.ptr = (unsigned char *)buf; | ||
84 | pr.bytes = 0; | ||
85 | pr.max = size; | ||
86 | |||
87 | ok = format(sprfunc, &pr, fmt, ap); | ||
88 | |||
89 | /* make sure it ends with a trailing zero */ | ||
90 | pr.ptr[(pr.bytes < pr.max) ? 0 : -1] = '\0'; | ||
91 | |||
92 | return pr.bytes; | ||
93 | } | ||