mirror of https://github.com/nealey/eris.git
44 lines
1.7 KiB
C
44 lines
1.7 KiB
C
|
#ifndef STR_H
|
||
|
|
#define STR_H
|
||
|
|
|
||
|
|
#include <sys/cdefs.h>
|
||
|
|
#ifndef __pure__
|
||
|
|
#define __pure__
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/* str_copy copies leading bytes from in to out until \0.
|
||
|
|
* return number of copied bytes. */
|
||
|
|
extern unsigned int 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. */
|
||
|
|
extern 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. */
|
||
|
|
extern int str_diffn(const char *a,const char *b,unsigned int limit) __pure__;
|
||
|
|
|
||
|
|
/* str_len returns the index of \0 in s */
|
||
|
|
extern unsigned int str_len(const char *s) __pure__;
|
||
|
|
|
||
|
|
/* str_chr returns the index of the first occurance of needle or \0 in haystack */
|
||
|
|
extern unsigned int str_chr(const char *haystack,char needle) __pure__;
|
||
|
|
|
||
|
|
/* str_rchr returns the index of the last occurance of needle or \0 in haystack */
|
||
|
|
extern unsigned int str_rchr(const char *haystack,char needle) __pure__;
|
||
|
|
|
||
|
|
/* str_start returns 1 if the b is a prefix of a, 0 otherwise */
|
||
|
|
extern 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)))
|
||
|
|
|
||
|
|
#endif
|