#ifndef STRUTIL_H
#define STRUTIL_H

#pragma once

#include "config.h"

#include <stddef.h>
#include <stdarg.h>
#include <stdio.h>
#include <limits.h>

#ifdef __cplusplus
extern "C" {
#endif

/* c-string extension funtions */

/**
 * search string in buffer, 
 * memstr : buffer search, case sensitive
 * memistr : buffer search, case insensitive
 */
TOOLKIT_API const char *memstr(const char *buf, int n, const char *str);
TOOLKIT_API char *memstr1(char *buf, int n, const char *str);
TOOLKIT_API const char *memrstr(const char *buf, int n, const char *str);
TOOLKIT_API const char *memistr(const char *buf, int n, const char *str);
TOOLKIT_API const char *memristr(const char *buf, int n, const char *str);

#ifdef _WIN32

TOOLKIT_API void* memmem(const void* haystack, size_t haystacklen,
	const void* needle, size_t needlelen);

TOOLKIT_API char* strcasestr(const char* haystack, const char* needle);

#endif //_WIN32


/**
 * trim string inplace
 * strltrim : left trim
 * strrtrim : right trim
 * strtrim : both left and right trim
 * strnormws: removes white-space surrounding the string, and 
 * converts all remaining groups of white-space to a single space.
 */
TOOLKIT_API char *strtrim(char *s, const char *trims);
TOOLKIT_API char *strltrim(char *s, const char *trims);
TOOLKIT_API char *strrtrim(char *s, const char *trims);
TOOLKIT_API char *strnormws(char *s);

#ifdef _WIN32

/**
 * copy string and return pointer to the end null-terminated char
 */
TOOLKIT_API char* stpcpy(char* dst, const char* src);

/**
 * string tokenize
 */
TOOLKIT_API char* strsep(char** stringp, const char* delim);
TOOLKIT_API char* strtok_r(char* str, const char* delim, char** tracker);

#endif //_WIN32

/**
 * replace occurrences of substring in string, return value should be freed by free
 */
TOOLKIT_API char *strrepleace(const char *str, const char *oldstr, const char *newstr);

/**
 * split string to string list, use strarrayfree to free memory 
 */
TOOLKIT_API char **strsplit(const char *s, const char *delim);
TOOLKIT_API void strfreev(char **strings);




/**
 * substring 
 */
TOOLKIT_API char *strsub(char *dest,char *src, size_t offset, size_t len);
TOOLKIT_API char *strleft(char *dest,char *src, size_t len);
TOOLKIT_API char *strright(char *dest,char *src, size_t len);

/**
 * allocate a concatenation of strings, Use (char*)0, not NULL, to end the list of parameters. 
 */
TOOLKIT_API char * TOOLKIT_CC stralloc(const char *arg1, ...);
TOOLKIT_API char * TOOLKIT_CC stralloca(const char *arg1, ...);

/**
 * duplicate a memory buffer
 */
TOOLKIT_API void *memdup(const void *buf, int len);
TOOLKIT_API void *memdupa(const void *buf, int len);




#ifdef _WIN32

TOOLKIT_API char* strdupa(const char* str);

/**
 * Duplicates the first @n bytes of a string, returning a newly-allocated
 * conflict with /usr/include/string.h
 */
TOOLKIT_API char *strndup(const char *str, int n);

#endif //_WIN32

/**
 * Creates a new string @length bytes long filled with @fill_char.
 * Creates a new string @length bytes long filled with @fill_char.
 */
TOOLKIT_API char* strnfill(int length, int fill_char);

/**
 * Compares str1 and str2 like strcmp(). Handles NULL strings gracefully.
 */
TOOLKIT_API int strcmp0 (const char *str1,const char *str2);

/**
 * create a string from format list
 */
TOOLKIT_API char* TOOLKIT_CC strdup_printf(const char *format, ...);
TOOLKIT_API char* TOOLKIT_CC strdup_vprintf(const char *format, va_list args);

/** 
 * Copies src to dest; 
 * dest is guaranteed to be nul-terminated; 
 * src must be nul-terminated; 
 * dest_size is the buffer size, not the number of chars to copy. 
 * Caveat: strlcpy() is supposedly more secure than strcpy() or strncpy(), 
 * but if you really want to avoid screwups, g_strdup() is an even better idea. 
 */
TOOLKIT_API size_t strlcpy(char *dest, const char *src, size_t size);
TOOLKIT_API size_t strlcat(char *dest, const char *src, size_t size);
TOOLKIT_API ssize_t strscpy(char* dest, const char* src, size_t size);

/**
 * Copies NULL-terminated array of strings. The copy is a deep copy; 
 * the new array should be freed by first freeing each string, 
 * then the array itself. strfreev() does this for you. 
 * If called on a NULL value, g_strdupv() simply returns NULL.
 */
TOOLKIT_API char** strdupv (char **str_array);

/**
 * Joins a number of strings together to form one long string, 
 * with the optional separator inserted between each of them. 
 * @return a newly-allocated string containing all of the strings joined together, with separator between them. 
 */
TOOLKIT_API char* strjoinv (const char  *separator,char **str_array);
TOOLKIT_API char* TOOLKIT_CC strjoin (const char  *separator, ...);

/**
 * Looks whether the string str ends with suffix.
 */
TOOLKIT_API int str_has_suffix (const char  *str, const char  *suffix);

/**
 * Looks whether the string str starts with prefix.
 */
TOOLKIT_API int str_has_prefix (const char *str,const char *prefix);

/**
 * Returns the length of the given NULL-terminated string array str_array.
 */
TOOLKIT_API unsigned int strv_length (char **str_array);

/** xml escape */
TOOLKIT_API char *str_xml_escape(const char *src);

/** parse cmd line */
TOOLKIT_API void str_parse_cmdline (char *cmdstart,char **argv,char *args,int *numargs,int *numchars);

TOOLKIT_API void str_get_format_uuid(char* strbuffer, size_t ulen);

TOOLKIT_API int str_reset_buffer(void* pbuf, int idata, size_t ulen);

TOOLKIT_API int str_rend_string(char* pSrc, int iflag);

TOOLKIT_API int str_fifter_string(char* pbuf, size_t usize, const char* psrc, const char cflag);

TOOLKIT_API int str_get_interger_netaddr(char* strbuf, size_t ubufszie, const char* szip);

TOOLKIT_API int str_convert_interaddr_strip(char* strbuf, size_t ubufszie, const char* szinter_ip);

TOOLKIT_API int str_connect_strings(char* strbuf, size_t ulen, const char* psrca, const char* psrcb, const char* pstr);

#ifdef __cplusplus
} // extern "C" {
#endif

#endif // STRUTIL_H