]>
git.saurik.com Git - apple/bootx.git/blob - bootx.tproj/libclite.subproj/string.c
2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
4 * @APPLE_LICENSE_HEADER_START@
6 * The contents of this file constitute Original Code as defined in and
7 * are subject to the Apple Public Source License Version 1.1 (the
8 * "License"). You may not use this file except in compliance with the
9 * License. Please obtain a copy of the License at
10 * http://www.apple.com/publicsource and read it before using this file.
12 * This Original Code and all software distributed under the License are
13 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17 * License for the specific language governing rights and limitations
20 * @APPLE_LICENSE_HEADER_END@
23 * string.c - string operations.
25 * Copyright (c) 1998-2000 Apple Computer, Inc.
32 /*#if DONT_USE_GCC_BUILT_IN_STRLEN*/
34 #define tolower(c) ((int)((c) & ~0x20))
35 #define toupper(c) ((int)((c) | 0x20))
37 int strlen(const char *s
)
49 strcmp(const char *s1
, const char *s2
)
51 while (*s1
&& (*s1
== *s2
)) {
58 int strncmp(const char *s1
, const char *s2
, size_t len
)
61 while (--n
>= 0 && *s1
== *s2
++)
64 return(n
<0 ? 0 : *s1
- *--s2
);
68 strcpy(char *s1
, const char *s2
)
70 register char *ret
= s1
;
77 strncpy(char *s1
, const char *s2
, size_t n
)
79 register char *ret
= s1
;
80 while (n
&& (*s1
++ = *s2
++))
89 register int c
= *str
;
91 if (c
<= '7' && c
>= '0')
93 else if (c
<= 'h' && c
>= 'a')
100 atoi(const char *str
)
102 register int sum
= 0;
103 while (*str
== ' ' || *str
== '\t')
105 while (*str
>= '0' && *str
<= '9') {
113 char *strncat(char *s1
, const char *s2
, size_t n
)
115 register char *ret
= s1
;
124 char *strcat(char *s1
, const char *s2
)
126 return(strncat(s1
, s2
, strlen(s2
)));
130 int strncasecmp(const char *s1
, const char *s2
, size_t len
)
132 register int n
= len
;
133 while (--n
>= 0 && tolower(*s1
) == tolower(*s2
++))
136 return(n
<0 ? 0 : tolower(*s1
) - tolower(*--s2
));