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#define ngx_string(str) { sizeof(str) - 1, (u_char *) str }
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#define ngx_null_string { 0, NULL }
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#define ngx_str_set(str, text) \
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(str)->len = sizeof(text) - 1; (str)->data = (u_char *) text
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#define ngx_str_null(str) (str)->len = 0; (str)->data = NULL
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#define ngx_tolower(c) (u_char) ((c >= 'A' && c <= 'Z') ? (c | 0x20) : c)
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#define ngx_toupper(c) (u_char) ((c >= 'a' && c <= 'z') ? (c & ~0x20) : c)
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void ngx_strlow(u_char *dst, u_char *src, size_t n);
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#define ngx_strncmp(s1, s2, n) strncmp((const char *) s1, (const char *) s2, n)
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#define ngx_strstr(s1, s2) strstr((const char *) s1, (const char *) s2)
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#define ngx_strlen(s) strlen((const char *) s)
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#define ngx_strchr(s1, c) strchr((const char *) s1, (int) c)
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#define ngx_strlen(s) strlen((const char *) s)
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static ngx_inline u_char *
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ngx_strlchr(u_char *p, u_char *last, u_char c)
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#if (NGX_MEMCPY_LIMIT)
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void *ngx_memcpy(void *dst, void *src, size_t n);
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#define ngx_cpymem(dst, src, n) ((u_char *) ngx_memcpy(dst, src, n)) + (n)
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void *ngx_memcpy(void *dst, const void *src, size_t n);
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#define ngx_cpymem(dst, src, n) (((u_char *) ngx_memcpy(dst, src, n)) + (n))
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* icc8 compile memcpy(d, s, 4) to the inline "mov"es or XMM moves.
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#define ngx_memcpy(dst, src, n) (void) memcpy(dst, src, n)
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#define ngx_cpymem(dst, src, n) ((u_char *) memcpy(dst, src, n)) + (n)
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#define ngx_cpymem(dst, src, n) (((u_char *) memcpy(dst, src, n)) + (n))
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#define ngx_memmove(dst, src, n) (void) memmove(dst, src, n)
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#define ngx_movemem(dst, src, n) (((u_char *) memmove(dst, src, n)) + (n))
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/* msvc and icc7 compile memcmp() to the inline loop */
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#define ngx_memcmp(s1, s2, n) memcmp((const char *) s1, (const char *) s2, n)
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u_char *ngx_pstrdup(ngx_pool_t *pool, ngx_str_t *src);
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u_char * ngx_cdecl ngx_sprintf(u_char *buf, const char *fmt, ...);
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u_char * ngx_cdecl ngx_snprintf(u_char *buf, size_t max, const char *fmt, ...);
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u_char *ngx_vsnprintf(u_char *buf, size_t max, const char *fmt, va_list args);
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u_char * ngx_cdecl ngx_slprintf(u_char *buf, u_char *last, const char *fmt,
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u_char *ngx_vslprintf(u_char *buf, u_char *last, const char *fmt, va_list args);
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#define ngx_vsnprintf(buf, max, fmt, args) \
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ngx_vslprintf(buf, buf + (max), fmt, args)
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ngx_int_t ngx_strcasecmp(u_char *s1, u_char *s2);
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ngx_int_t ngx_strncasecmp(u_char *s1, u_char *s2, size_t n);
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u_char *ngx_strstrn(u_char *s1, char *s2, size_t n);
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u_char *ngx_strcasestrn(u_char *s1, char *s2, size_t n);
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u_char *ngx_strlcasestrn(u_char *s1, u_char *last, u_char *s2, size_t n);
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ngx_int_t ngx_rstrncmp(u_char *s1, u_char *s2, size_t n);
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ngx_int_t ngx_rstrncasecmp(u_char *s1, u_char *s2, size_t n);
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ngx_int_t ngx_memn2cmp(u_char *s1, u_char *s2, size_t n1, size_t n2);
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ngx_int_t ngx_dns_strcmp(u_char *s1, u_char *s2);
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ngx_int_t ngx_atoi(u_char *line, size_t n);
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ngx_int_t ngx_atofp(u_char *line, size_t n, size_t point);
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ssize_t ngx_atosz(u_char *line, size_t n);
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off_t ngx_atoof(u_char *line, size_t n);
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time_t ngx_atotm(u_char *line, size_t n);
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void ngx_encode_base64(ngx_str_t *dst, ngx_str_t *src);
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ngx_int_t ngx_decode_base64(ngx_str_t *dst, ngx_str_t *src);
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uint32_t ngx_utf_decode(u_char **p, size_t n);
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size_t ngx_utf_length(u_char *p, size_t n);
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u_char *ngx_utf_cpystrn(u_char *dst, u_char *src, size_t n);
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#define NGX_ESCAPE_URI 0
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#define NGX_ESCAPE_ARGS 1
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#define NGX_ESCAPE_HTML 2
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#define NGX_ESCAPE_REFRESH 3
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#define NGX_ESCAPE_MEMCACHED 4
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#define NGX_ESCAPE_MAIL_AUTH 5
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ngx_int_t ngx_decode_base64url(ngx_str_t *dst, ngx_str_t *src);
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uint32_t ngx_utf8_decode(u_char **p, size_t n);
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size_t ngx_utf8_length(u_char *p, size_t n);
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u_char *ngx_utf8_cpystrn(u_char *dst, u_char *src, size_t n, size_t len);
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#define NGX_ESCAPE_URI 0
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#define NGX_ESCAPE_ARGS 1
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#define NGX_ESCAPE_URI_COMPONENT 2
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#define NGX_ESCAPE_HTML 3
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#define NGX_ESCAPE_REFRESH 4
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#define NGX_ESCAPE_MEMCACHED 5
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#define NGX_ESCAPE_MAIL_AUTH 6
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#define NGX_UNESCAPE_URI 1
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#define NGX_UNESCAPE_REDIRECT 2
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uintptr_t ngx_escape_html(u_char *dst, u_char *src, size_t size);
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ngx_rbtree_node_t node;
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void ngx_str_rbtree_insert_value(ngx_rbtree_node_t *temp,
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ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel);
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ngx_str_node_t *ngx_str_rbtree_lookup(ngx_rbtree_t *rbtree, ngx_str_t *name,
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void ngx_sort(void *base, size_t n, size_t size,
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ngx_int_t (*cmp)(const void *, const void *));