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author | FreeArtMan <dos21h@gmail.com> | 2017-05-20 13:43:49 +0100 |
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committer | FreeArtMan <dos21h@gmail.com> | 2017-05-20 13:43:49 +0100 |
commit | 126fa84b8591c3b285b7f598089451aa22447f10 (patch) | |
tree | 29eb78cd41870a1e4211e45b8e551a94b401ffe7 /sds.h | |
parent | c03a145002445eaaa814e3f133c9a28f991bb860 (diff) | |
download | agni-126fa84b8591c3b285b7f598089451aa22447f10.tar.gz agni-126fa84b8591c3b285b7f598089451aa22447f10.zip |
Moved commands to seperate directory, moved external sources to seperate directory, updated Makefile with auto include and auto compile features
Diffstat (limited to 'sds.h')
-rw-r--r-- | sds.h | 273 |
1 files changed, 0 insertions, 273 deletions
@@ -1,273 +0,0 @@ -/* SDSLib 2.0 -- A C dynamic strings library - * - * Copyright (c) 2006-2015, Salvatore Sanfilippo <antirez at gmail dot com> - * Copyright (c) 2015, Oran Agra - * Copyright (c) 2015, Redis Labs, Inc - * 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. - * * Neither the name of Redis nor the names of its contributors may be used - * to endorse or promote products derived from this software without - * specific prior written permission. - * - * 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 <sys/types.h> -#include <stdarg.h> -#include <stdint.h> - -typedef char *sds; - -/* Note: sdshdr5 is never used, we just access the flags byte directly. - * However is here to document the layout of type 5 SDS strings. */ -struct __attribute__ ((__packed__)) sdshdr5 { - unsigned char flags; /* 3 lsb of type, and 5 msb of string length */ - char buf[]; -}; -struct __attribute__ ((__packed__)) sdshdr8 { - uint8_t len; /* used */ - uint8_t alloc; /* excluding the header and null terminator */ - unsigned char flags; /* 3 lsb of type, 5 unused bits */ - char buf[]; -}; -struct __attribute__ ((__packed__)) sdshdr16 { - uint16_t len; /* used */ - uint16_t alloc; /* excluding the header and null terminator */ - unsigned char flags; /* 3 lsb of type, 5 unused bits */ - char buf[]; -}; -struct __attribute__ ((__packed__)) sdshdr32 { - uint32_t len; /* used */ - uint32_t alloc; /* excluding the header and null terminator */ - unsigned char flags; /* 3 lsb of type, 5 unused bits */ - char buf[]; -}; -struct __attribute__ ((__packed__)) sdshdr64 { - uint64_t len; /* used */ - uint64_t alloc; /* excluding the header and null terminator */ - unsigned char flags; /* 3 lsb of type, 5 unused bits */ - char buf[]; -}; - -#define SDS_TYPE_5 0 -#define SDS_TYPE_8 1 -#define SDS_TYPE_16 2 -#define SDS_TYPE_32 3 -#define SDS_TYPE_64 4 -#define SDS_TYPE_MASK 7 -#define SDS_TYPE_BITS 3 -#define SDS_HDR_VAR(T,s) struct sdshdr##T *sh = (void*)((s)-(sizeof(struct sdshdr##T))); -#define SDS_HDR(T,s) ((struct sdshdr##T *)((s)-(sizeof(struct sdshdr##T)))) -#define SDS_TYPE_5_LEN(f) ((f)>>SDS_TYPE_BITS) - -static inline size_t sdslen(const sds s) { - unsigned char flags = s[-1]; - switch(flags&SDS_TYPE_MASK) { - case SDS_TYPE_5: - return SDS_TYPE_5_LEN(flags); - case SDS_TYPE_8: - return SDS_HDR(8,s)->len; - case SDS_TYPE_16: - return SDS_HDR(16,s)->len; - case SDS_TYPE_32: - return SDS_HDR(32,s)->len; - case SDS_TYPE_64: - return SDS_HDR(64,s)->len; - } - return 0; -} - -static inline size_t sdsavail(const sds s) { - unsigned char flags = s[-1]; - switch(flags&SDS_TYPE_MASK) { - case SDS_TYPE_5: { - return 0; - } - case SDS_TYPE_8: { - SDS_HDR_VAR(8,s); - return sh->alloc - sh->len; - } - case SDS_TYPE_16: { - SDS_HDR_VAR(16,s); - return sh->alloc - sh->len; - } - case SDS_TYPE_32: { - SDS_HDR_VAR(32,s); - return sh->alloc - sh->len; - } - case SDS_TYPE_64: { - SDS_HDR_VAR(64,s); - return sh->alloc - sh->len; - } - } - return 0; -} - -static inline void sdssetlen(sds s, size_t newlen) { - unsigned char flags = s[-1]; - switch(flags&SDS_TYPE_MASK) { - case SDS_TYPE_5: - { - unsigned char *fp = ((unsigned char*)s)-1; - *fp = SDS_TYPE_5 | (newlen << SDS_TYPE_BITS); - } - break; - case SDS_TYPE_8: - SDS_HDR(8,s)->len = newlen; - break; - case SDS_TYPE_16: - SDS_HDR(16,s)->len = newlen; - break; - case SDS_TYPE_32: - SDS_HDR(32,s)->len = newlen; - break; - case SDS_TYPE_64: - SDS_HDR(64,s)->len = newlen; - break; - } -} - -static inline void sdsinclen(sds s, size_t inc) { - unsigned char flags = s[-1]; - switch(flags&SDS_TYPE_MASK) { - case SDS_TYPE_5: - { - unsigned char *fp = ((unsigned char*)s)-1; - unsigned char newlen = SDS_TYPE_5_LEN(flags)+inc; - *fp = SDS_TYPE_5 | (newlen << SDS_TYPE_BITS); - } - break; - case SDS_TYPE_8: - SDS_HDR(8,s)->len += inc; - break; - case SDS_TYPE_16: - SDS_HDR(16,s)->len += inc; - break; - case SDS_TYPE_32: - SDS_HDR(32,s)->len += inc; - break; - case SDS_TYPE_64: - SDS_HDR(64,s)->len += inc; - break; - } -} - -/* sdsalloc() = sdsavail() + sdslen() */ -static inline size_t sdsalloc(const sds s) { - unsigned char flags = s[-1]; - switch(flags&SDS_TYPE_MASK) { - case SDS_TYPE_5: - return SDS_TYPE_5_LEN(flags); - case SDS_TYPE_8: - return SDS_HDR(8,s)->alloc; - case SDS_TYPE_16: - return SDS_HDR(16,s)->alloc; - case SDS_TYPE_32: - return SDS_HDR(32,s)->alloc; - case SDS_TYPE_64: - return SDS_HDR(64,s)->alloc; - } - return 0; -} - -static inline void sdssetalloc(sds s, size_t newlen) { - unsigned char flags = s[-1]; - switch(flags&SDS_TYPE_MASK) { - case SDS_TYPE_5: - /* Nothing to do, this type has no total allocation info. */ - break; - case SDS_TYPE_8: - SDS_HDR(8,s)->alloc = newlen; - break; - case SDS_TYPE_16: - SDS_HDR(16,s)->alloc = newlen; - break; - case SDS_TYPE_32: - SDS_HDR(32,s)->alloc = newlen; - break; - case SDS_TYPE_64: - SDS_HDR(64,s)->alloc = newlen; - break; - } -} - -sds sdsnewlen(const void *init, size_t initlen); -sds sdsnew(const char *init); -sds sdsempty(void); -sds sdsdup(const sds s); -void sdsfree(sds s); -sds sdsgrowzero(sds s, size_t len); -sds sdscatlen(sds s, const void *t, size_t len); -sds sdscat(sds s, const char *t); -sds sdscatsds(sds s, const sds t); -sds sdscpylen(sds s, const char *t, size_t len); -sds sdscpy(sds s, const char *t); - -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 - -sds sdscatfmt(sds s, char const *fmt, ...); -sds sdstrim(sds s, const char *cset); -void sdsrange(sds s, int start, int end); -void sdsupdatelen(sds s); -void sdsclear(sds s); -int sdscmp(const sds s1, const sds s2); -sds *sdssplitlen(const char *s, int len, const char *sep, int seplen, int *count); -void sdsfreesplitres(sds *tokens, int count); -void sdstolower(sds s); -void sdstoupper(sds s); -sds sdsfromlonglong(long long value); -sds sdscatrepr(sds s, const char *p, size_t len); -sds *sdssplitargs(const char *line, int *argc); -sds sdsmapchars(sds s, const char *from, const char *to, size_t setlen); -sds sdsjoin(char **argv, int argc, char *sep); -sds sdsjoinsds(sds *argv, int argc, const char *sep, size_t seplen); - -/* Low level functions exposed to the user API */ -sds sdsMakeRoomFor(sds s, size_t addlen); -void sdsIncrLen(sds s, int incr); -sds sdsRemoveFreeSpace(sds s); -size_t sdsAllocSize(sds s); -void *sdsAllocPtr(sds s); - -/* Export the allocator used by SDS to the program using SDS. - * Sometimes the program SDS is linked to, may use a different set of - * allocators, but may want to allocate or free things that SDS will - * respectively free or allocate. */ -void *sds_malloc(size_t size); -void *sds_realloc(void *ptr, size_t size); -void sds_free(void *ptr); - -#ifdef REDIS_TEST -int sdsTest(int argc, char *argv[]); -#endif - -#endif |