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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2013 Olaf Wintermann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _SSTRING_H
#define	_SSTRING_H

#include "ucx.h"
#include "mempool.h"
#include "../public/nsapi.h"
#include <stddef.h>

/* use macros for literals only */
#define S(s) { (char*)s, sizeof(s)-1 }
#define ST(s) sstrn((char*)s, sizeof(s)-1)

#ifdef	__cplusplus
extern "C" {
#endif

typedef struct sstring {
    char   *ptr;
    size_t length;
} sstr_t;

/*
 * creates a new sstr_t from a null terminated string
 *
 * s  null terminated string
 */
sstr_t sstr(char *s);

/*
 * creates a new sstr_t from a string and length
 *
 * s  string
 * n  length of string
 */
sstr_t sstrn(char *s, size_t n);


/*
 * gets the length of n sstr_t strings
 *
 * n    number of strings
 * s    string
 * ...  strings
 */
size_t sstrnlen(size_t n, sstr_t s, ...);


/*
 * concatenates n strings
 *
 * n    number of strings
 * s    new string with enough memory allocated
 * ...  strings
 */
sstr_t sstrncat(size_t n, sstr_t s, sstr_t c1, ...);


/*
 *
 */
sstr_t sstrsubs(sstr_t s, size_t start);

/*
 *
 */
sstr_t sstrsubsl(sstr_t s, size_t start, size_t length);

/*
 * splits s into n parts
 *
 * s    the string to split
 * d    the delimiter string
 * n    the maximum size of the resulting list
 *      a size of 0 indicates an unbounded list size
 *      the actual size of the list will be stored here
 *
 *      Hint: use this value to avoid dynamic reallocation of the result list
 *
 * Returns a list of the split strings
 * NOTE: this list needs to be freed manually after usage
 *
 * Returns NULL on error
 */
sstr_t* sstrsplit(sstr_t s, sstr_t d, size_t *n);

int sstrcmp(sstr_t s1, sstr_t s2);

sstr_t sstrdup(sstr_t s);

sstr_t sstrtrim(sstr_t string);

// webserver extension
int sstr_startswith(sstr_t string, sstr_t cmp);
sstr_t sstrdup_mp(UcxMempool *pool, sstr_t s);
sstr_t sstrdup_pool(pool_handle_t *pool, sstr_t s);

#ifdef	__cplusplus
}
#endif

#endif	/* _SSTRING_H */