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/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#ifndef _NXT_STRING_H_INCLUDED_
#define _NXT_STRING_H_INCLUDED_
#define \
nxt_lowcase(c) \
(u_char) ((c >= 'A' && c <= 'Z') ? c | 0x20 : c)
#define \
nxt_upcase(c) \
(u_char) ((c >= 'a' && c <= 'z') ? c & ~0x20 : c)
#define \
nxt_isdigit(c) \
((u_char) ((c) - '0') <= 9)
#define \
nxt_strlen(s) \
strlen((char *) s)
#define \
nxt_memzero(buf, length) \
(void) memset(buf, 0, length)
#define \
nxt_memset(buf, c, length) \
(void) memset(buf, c, length)
#define \
nxt_memcpy(dst, src, length) \
(void) memcpy(dst, src, length)
NXT_EXPORT void nxt_memcpy_lowcase(u_char *dst, const u_char *src,
size_t length);
NXT_EXPORT void nxt_memcpy_upcase(u_char *dst, const u_char *src,
size_t length);
/*
* nxt_cpymem() is an inline function but not a macro to
* eliminate possible double evaluation of length "length".
*/
nxt_inline void *
nxt_cpymem(void *dst, const void *src, size_t length)
{
return ((u_char *) memcpy(dst, src, length)) + length;
}
#define \
nxt_memmove(dst, src, length) \
(void) memmove(dst, src, length)
#define \
nxt_memcmp(s1, s2, length) \
memcmp((char *) s1, (char *) s2, length)
#define \
nxt_memchr(s, c, length) \
memchr((char *) s, c, length)
#define \
nxt_strcmp(s1, s2) \
strcmp((char *) s1, (char *) s2)
#define \
nxt_strncmp(s1, s2, length) \
strncmp((char *) s1, (char *) s2, length)
NXT_EXPORT u_char *nxt_cpystrn(u_char *dst, const u_char *src, size_t length);
NXT_EXPORT nxt_int_t nxt_strcasecmp(const u_char *s1, const u_char *s2);
NXT_EXPORT nxt_int_t nxt_strncasecmp(const u_char *s1, const u_char *s2,
size_t length);
NXT_EXPORT nxt_int_t nxt_memcasecmp(const u_char *s1, const u_char *s2,
size_t length);
NXT_EXPORT u_char *nxt_memstrn(const u_char *s, const u_char *end,
const char *ss, size_t length);
NXT_EXPORT u_char *nxt_memcasestrn(const u_char *s, const u_char *end,
const char *ss, size_t length);
NXT_EXPORT u_char *nxt_rmemstrn(const u_char *s, const u_char *end,
const char *ss, size_t length);
NXT_EXPORT size_t nxt_str_strip(u_char *start, u_char *end);
typedef struct {
size_t length;
u_char *start;
} nxt_str_t;
#define nxt_string(str) { nxt_length(str), (u_char *) str }
#define nxt_string_zero(str) { sizeof(str), (u_char *) str }
#define nxt_null_string { 0, NULL }
#define \
nxt_str_set(str, text) \
do { \
(str)->length = nxt_length(text); \
(str)->start = (u_char *) text; \
} while (0)
#define \
nxt_str_null(str) \
do { \
(str)->length = 0; \
(str)->start = NULL; \
} while (0)
NXT_EXPORT nxt_str_t *nxt_str_alloc(nxt_mp_t *mp, size_t length);
NXT_EXPORT nxt_str_t *nxt_str_dup(nxt_mp_t *mp, nxt_str_t *dst,
const nxt_str_t *src);
NXT_EXPORT char *nxt_str_cstrz(nxt_mp_t *mp, const nxt_str_t *src);
#define \
nxt_strstr_eq(s1, s2) \
(((s1)->length == (s2)->length) \
&& (nxt_memcmp((s1)->start, (s2)->start, (s1)->length) == 0))
#define \
nxt_strcasestr_eq(s1, s2) \
(((s1)->length == (s2)->length) \
&& (nxt_memcasecmp((s1)->start, (s2)->start, (s1)->length) == 0))
#define \
nxt_str_eq(s, p, _length) \
(((s)->length == _length) && (nxt_memcmp((s)->start, p, _length) == 0))
#define \
nxt_str_start(s, p, _length) \
(((s)->length >= _length) && (nxt_memcmp((s)->start, p, _length) == 0))
#define \
nxt_strchr_eq(s, c) \
(((s)->length == 1) && ((s)->start[0] == c))
#define \
nxt_strchr_start(s, c) \
(((s)->length != 0) && ((s)->start[0] == c))
NXT_EXPORT nxt_int_t nxt_strverscmp(const u_char *s1, const u_char *s2);
NXT_EXPORT nxt_bool_t nxt_strvers_match(u_char *version, u_char *prefix,
size_t length);
#endif /* _NXT_STRING_H_INCLUDED_ */
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