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50 lines
1.8 KiB
50 lines
1.8 KiB
#ifndef STR_H |
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#define STR_H |
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#ifdef __dietlibc__ |
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#include <sys/cdefs.h> |
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#endif |
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#ifndef __pure__ |
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#define __pure__ |
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#endif |
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/* str_copy copies leading bytes from in to out until \0. |
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* return number of copied bytes. */ |
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extern unsigned long str_copy(char *out,const char *in); |
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/* str_diff returns negative, 0, or positive, depending on whether the |
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* string a[0], a[1], ..., a[n]=='\0' is lexicographically smaller than, |
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* equal to, or greater than the string b[0], b[1], ..., b[m-1]=='\0'. |
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* If the strings are different, str_diff does not read bytes past the |
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* first difference. */ |
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extern int str_diff(const char *a,const char *b) __pure__; |
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/* str_diffn returns negative, 0, or positive, depending on whether the |
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* string a[0], a[1], ..., a[n]=='\0' is lexicographically smaller than, |
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* equal to, or greater than the string b[0], b[1], ..., b[m-1]=='\0'. |
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* If the strings are different, str_diffn does not read bytes past the |
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* first difference. The strings will be considered equal if the first |
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* limit characters match. */ |
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extern int str_diffn(const char *a,const char *b,unsigned long limit) __pure__; |
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#ifdef __dietlibc__ |
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#include <string.h> |
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#define str_len(foo) strlen(foo) |
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#else |
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/* str_len returns the index of \0 in s */ |
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extern unsigned long str_len(const char *s) __pure__; |
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#endif |
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/* str_chr returns the index of the first occurance of needle or \0 in haystack */ |
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extern unsigned long str_chr(const char *haystack,char needle) __pure__; |
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/* str_rchr returns the index of the last occurance of needle or \0 in haystack */ |
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extern unsigned long str_rchr(const char *haystack,char needle) __pure__; |
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/* str_start returns 1 if the b is a prefix of a, 0 otherwise */ |
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extern int str_start(const char *a,const char *b) __pure__; |
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/* convenience shortcut to test for string equality */ |
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#define str_equal(s,t) (!str_diff((s),(t))) |
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#endif
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