/usr/include/diet/str.h is in libowfat-dietlibc-dev 0.30-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | /* this header file comes from libowfat, http://www.fefe.de/libowfat/ */
#ifndef STR_H
#define STR_H
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifndef __pure__
#define __pure__
#endif
/* str_copy copies leading bytes from in to out until \0.
* return number of copied bytes. */
size_t str_copy(char *out,const char *in);
/* str_diff returns negative, 0, or positive, depending on whether the
* string a[0], a[1], ..., a[n]=='\0' is lexicographically smaller than,
* equal to, or greater than the string b[0], b[1], ..., b[m-1]=='\0'.
* If the strings are different, str_diff does not read bytes past the
* first difference. */
int str_diff(const char *a,const char *b) __pure__;
/* str_diffn returns negative, 0, or positive, depending on whether the
* string a[0], a[1], ..., a[n]=='\0' is lexicographically smaller than,
* equal to, or greater than the string b[0], b[1], ..., b[m-1]=='\0'.
* If the strings are different, str_diffn does not read bytes past the
* first difference. The strings will be considered equal if the first
* limit characters match. */
int str_diffn(const char *a,const char *b,size_t limit) __pure__;
#ifdef __dietlibc__
#include <string.h>
#define str_len(foo) strlen(foo)
#else
/* str_len returns the index of \0 in s */
size_t str_len(const char *s) __pure__;
#endif
/* str_chr returns the index of the first occurance of needle or \0 in haystack */
size_t str_chr(const char *haystack,char needle) __pure__;
/* str_rchr returns the index of the last occurance of needle or \0 in haystack */
size_t str_rchr(const char *haystack,char needle) __pure__;
/* str_start returns 1 if the b is a prefix of a, 0 otherwise */
int str_start(const char *a,const char *b) __pure__;
/* convenience shortcut to test for string equality */
#define str_equal(s,t) (!str_diff((s),(t)))
#ifdef __cplusplus
}
#endif
#endif
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