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/* SDS (Simple Dynamic Strings), A C dynamic strings library.
*
* Copyright (c) 2006-2014, Salvatore Sanfilippo <antirez at gmail dot com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * 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 OWNER 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 SDS_H
#define SDS_H
#define SDS_MAX_PREALLOC (1024*1024)
#include <stdarg.h>
#include <stddef.h>
#include <sys/types.h>
typedef char *sds;
struct sdshdr {
size_t len;
size_t free;
char buf[];
};
/**
* User API function prototypes
*/
/// Initialization
sds sdsnew(const void *init, size_t initlen);
sds sdsdup(const sds s);
sds sdsempty(void);
sds sdsfromlonglong(long long value);
/// Querying
int sdscmp(const sds s1, const sds s2);
/// Modification
void sdsclear(sds s);
sds sdsgrowzero(sds s, size_t len);
sds sdscpylen(sds s, const char *t, size_t len);
sds sdscpy(sds s, const char *t);
sds sdsjoin(char **argv, int argc, char *sep, size_t seplen);
sds sdsjoinsds(sds *argv, int argc, const char *sep, size_t seplen);
sds sdsmapchars(sds s, const char *from, const char *to, size_t setlen);
void sdsrange(sds s, ptrdiff_t start, ptrdiff_t end);
void sdstolower(sds s);
void sdstoupper(sds s);
void sdstrim(sds s, const char *cset);
void sdsupdatelen(sds s);
sds *sdssplitargs(const char *line, int *argc);
sds *sdssplitlen(const char *s, size_t len, const char *sep, size_t seplen, size_t *count);
// Concatenation
sds sdscat(sds s, const char *t);
sds sdscatsds(sds s, const sds t);
sds sdscatlen(sds s, const void *t, size_t len);
sds sdscatrepr(sds s, const char *p, size_t len);
sds sdscatvprintf(sds s, const char *fmt, va_list ap);
#ifdef __GNUC__
sds sdscatprintf(sds s, const char *fmt, ...)
__attribute__((format(printf, 2, 3)));
#else
sds sdscatprintf(sds s, const char *fmt, ...);
#endif
/// Freeing
void sdsfree(sds s);
void sdsfreesplitres(sds *tokens, size_t count);
/// Low-level functions
size_t sdsAllocSize(sds s);
void sdsIncrLen(sds s, size_t incr);
sds sdsMakeRoomFor(sds s, size_t addlen);
sds sdsRemoveFreeSpace(sds s);
/// Low-level helper functions
int is_hex_digit(char c);
int hex_digit_to_int(char c);
/**
* Inline functions
*/
static inline struct sdshdr *sdsheader(const sds s) {
/* The sdshdr pointer has a different alignment than the original char
* pointer, so cast it through a void pointer to silence the warning. */
return (void *)(s - (sizeof (struct sdshdr)));
}
static inline sds sdsauto(const char *s) {
return sdsnew(s, s ? strlen(s) : 0);
}
static inline size_t sdsavail(const sds s) {
return sdsheader(s)->free;
}
static inline size_t sdslen(const sds s) {
return sdsheader(s)->len;
}
#endif
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