Initial version.
This commit is contained in:
Igor Sysoev
173
src/nxt_string.h
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173
src/nxt_string.h
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/*
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* Copyright (C) Igor Sysoev
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* Copyright (C) NGINX, Inc.
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*/
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#ifndef _NXT_STRING_H_INCLUDED_
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#define _NXT_STRING_H_INCLUDED_
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#define \
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nxt_lowcase(c) \
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(u_char) ((c >= 'A' && c <= 'Z') ? c | 0x20 : c)
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#define \
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nxt_upcase(c) \
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(u_char) ((c >= 'a' && c <= 'z') ? c & ~0x20 : c)
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#define NXT_CR (u_char) 13
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#define NXT_LF (u_char) 10
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#define NXT_CRLF "\x0d\x0a"
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#define NXT_CRLF_SIZE (sizeof(NXT_CRLF) - 1)
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#define NXT_LINEFEED_SIZE 1
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#define \
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nxt_linefeed(p) \
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*p++ = NXT_LF
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#define \
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nxt_strlen(s) \
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strlen((char *) s)
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#define \
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nxt_memzero(buf, len) \
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(void) memset(buf, 0, len)
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#define \
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nxt_memset(buf, c, len) \
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(void) memset(buf, c, len)
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#define \
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nxt_memcpy(dst, src, len) \
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(void) memcpy(dst, src, len)
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NXT_EXPORT void nxt_memcpy_lowcase(u_char *dst, const u_char *src, size_t len);
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/*
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* nxt_cpymem() is an inline function but not macro to
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* eliminate possible double evaluation of length "len".
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*/
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nxt_inline void *
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nxt_cpymem(void *dst, const void *src, size_t len)
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{
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return ((u_char *) memcpy(dst, src, len)) + len;
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}
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#define \
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nxt_memmove(dst, src, len) \
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(void) memmove(dst, src, len)
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#define \
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nxt_memcmp(s1, s2, len) \
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memcmp((char *) s1, (char *) s2, len)
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#define \
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nxt_memchr(s, c, len) \
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memchr((char *) s, c, len)
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#define \
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nxt_strcmp(s1, s2) \
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strcmp((char *) s1, (char *) s2)
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#define \
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nxt_strncmp(s1, s2, len) \
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strncmp((char *) s1, (char *) s2, len)
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NXT_EXPORT u_char *nxt_cpystrn(u_char *dst, const u_char *src, size_t len);
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NXT_EXPORT nxt_int_t nxt_strcasecmp(const u_char *s1, const u_char *s2);
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NXT_EXPORT nxt_int_t nxt_strncasecmp(const u_char *s1, const u_char *s2,
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size_t len);
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NXT_EXPORT nxt_int_t nxt_memcasecmp(const u_char *s1, const u_char *s2,
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size_t len);
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NXT_EXPORT u_char *nxt_memstrn(const u_char *s, const u_char *end,
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const char *ss, size_t len);
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NXT_EXPORT u_char *nxt_memcasestrn(const u_char *s, const u_char *end,
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const char *ss, size_t len);
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NXT_EXPORT u_char *nxt_rmemstrn(const u_char *s, const u_char *end,
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const char *ss, size_t len);
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NXT_EXPORT size_t nxt_str_strip(u_char *start, u_char *end);
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typedef struct {
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size_t len;
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u_char *data;
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} nxt_str_t;
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#define nxt_string(str) { sizeof(str) - 1, (u_char *) str }
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#define nxt_string_zero(str) { sizeof(str), (u_char *) str }
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#define nxt_null_string { 0, NULL }
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#define \
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nxt_str_set(str, text) \
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do { \
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(str)->len = sizeof(text) - 1; \
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(str)->data = (u_char *) text; \
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} while (0)
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#define \
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nxt_str_null(str) \
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do { \
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(str)->len = 0; \
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(str)->data = NULL; \
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} while (0)
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NXT_EXPORT nxt_str_t *nxt_str_alloc(nxt_mem_pool_t *mp, size_t len);
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NXT_EXPORT nxt_str_t *nxt_str_dup(nxt_mem_pool_t *mp, nxt_str_t *dst,
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const nxt_str_t *src);
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NXT_EXPORT char *nxt_str_copy(nxt_mem_pool_t *mp, const nxt_str_t *src);
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#define \
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nxt_strstr_eq(s1, s2) \
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(((s1)->len == (s2)->len) \
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&& (nxt_memcmp((s1)->data, (s2)->data, (s1)->len) == 0))
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#define \
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nxt_strcasestr_eq(s1, s2) \
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(((s1)->len == (s2)->len) \
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&& (nxt_memcasecmp((s1)->data, (s2)->data, (s1)->len) == 0))
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#define \
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nxt_str_eq(s, p, _len) \
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(((s)->len == _len) && (nxt_memcmp((s)->data, p, _len) == 0))
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#define \
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nxt_str_start(s, p, _len) \
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(((s)->len > _len) && (nxt_memcmp((s)->data, p, _len) == 0))
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#define \
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nxt_strchr_eq(s, c) \
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(((s)->len == 1) && ((s)->data[0] == c))
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#define \
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nxt_strchr_start(s, c) \
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(((s)->len != 0) && ((s)->data[0] == c))
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#endif /* _NXT_STRING_H_INCLUDED_ */
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