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diff --git a/examples/redis-unstable/deps/hiredis/sds.h b/examples/redis-unstable/deps/hiredis/sds.h
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1/* SDSLib 2.0 -- A C dynamic strings library
2 *
3 * Copyright (c) 2006-2015, Salvatore Sanfilippo <antirez at gmail dot com>
4 * Copyright (c) 2015, Oran Agra
5 * Copyright (c) 2015, Redis Labs, Inc
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * * Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * * Neither the name of Redis nor the names of its contributors may be used
17 * to endorse or promote products derived from this software without
18 * specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#ifndef HIREDIS_SDS_H
34#define HIREDIS_SDS_H
35
36#define HI_SDS_MAX_PREALLOC (1024*1024)
37#ifdef _MSC_VER
38typedef long long ssize_t;
39#define SSIZE_MAX (LLONG_MAX >> 1)
40#ifndef __clang__
41#define __attribute__(x)
42#endif
43#endif
44
45#include <sys/types.h>
46#include <stdarg.h>
47#include <stdint.h>
48
49typedef char *hisds;
50
51/* Note: sdshdr5 is never used, we just access the flags byte directly.
52 * However is here to document the layout of type 5 SDS strings. */
53struct __attribute__ ((__packed__)) hisdshdr5 {
54 unsigned char flags; /* 3 lsb of type, and 5 msb of string length */
55 char buf[];
56};
57struct __attribute__ ((__packed__)) hisdshdr8 {
58 uint8_t len; /* used */
59 uint8_t alloc; /* excluding the header and null terminator */
60 unsigned char flags; /* 3 lsb of type, 5 unused bits */
61 char buf[];
62};
63struct __attribute__ ((__packed__)) hisdshdr16 {
64 uint16_t len; /* used */
65 uint16_t alloc; /* excluding the header and null terminator */
66 unsigned char flags; /* 3 lsb of type, 5 unused bits */
67 char buf[];
68};
69struct __attribute__ ((__packed__)) hisdshdr32 {
70 uint32_t len; /* used */
71 uint32_t alloc; /* excluding the header and null terminator */
72 unsigned char flags; /* 3 lsb of type, 5 unused bits */
73 char buf[];
74};
75struct __attribute__ ((__packed__)) hisdshdr64 {
76 uint64_t len; /* used */
77 uint64_t alloc; /* excluding the header and null terminator */
78 unsigned char flags; /* 3 lsb of type, 5 unused bits */
79 char buf[];
80};
81
82#define HI_SDS_TYPE_5 0
83#define HI_SDS_TYPE_8 1
84#define HI_SDS_TYPE_16 2
85#define HI_SDS_TYPE_32 3
86#define HI_SDS_TYPE_64 4
87#define HI_SDS_TYPE_MASK 7
88#define HI_SDS_TYPE_BITS 3
89#define HI_SDS_HDR_VAR(T,s) struct hisdshdr##T *sh = (struct hisdshdr##T *)((s)-(sizeof(struct hisdshdr##T)));
90#define HI_SDS_HDR(T,s) ((struct hisdshdr##T *)((s)-(sizeof(struct hisdshdr##T))))
91#define HI_SDS_TYPE_5_LEN(f) ((f)>>HI_SDS_TYPE_BITS)
92
93static inline size_t hi_sdslen(const hisds s) {
94 unsigned char flags = s[-1];
95 switch(flags & HI_SDS_TYPE_MASK) {
96 case HI_SDS_TYPE_5:
97 return HI_SDS_TYPE_5_LEN(flags);
98 case HI_SDS_TYPE_8:
99 return HI_SDS_HDR(8,s)->len;
100 case HI_SDS_TYPE_16:
101 return HI_SDS_HDR(16,s)->len;
102 case HI_SDS_TYPE_32:
103 return HI_SDS_HDR(32,s)->len;
104 case HI_SDS_TYPE_64:
105 return HI_SDS_HDR(64,s)->len;
106 }
107 return 0;
108}
109
110static inline size_t hi_sdsavail(const hisds s) {
111 unsigned char flags = s[-1];
112 switch(flags&HI_SDS_TYPE_MASK) {
113 case HI_SDS_TYPE_5: {
114 return 0;
115 }
116 case HI_SDS_TYPE_8: {
117 HI_SDS_HDR_VAR(8,s);
118 return sh->alloc - sh->len;
119 }
120 case HI_SDS_TYPE_16: {
121 HI_SDS_HDR_VAR(16,s);
122 return sh->alloc - sh->len;
123 }
124 case HI_SDS_TYPE_32: {
125 HI_SDS_HDR_VAR(32,s);
126 return sh->alloc - sh->len;
127 }
128 case HI_SDS_TYPE_64: {
129 HI_SDS_HDR_VAR(64,s);
130 return sh->alloc - sh->len;
131 }
132 }
133 return 0;
134}
135
136static inline void hi_sdssetlen(hisds s, size_t newlen) {
137 unsigned char flags = s[-1];
138 switch(flags&HI_SDS_TYPE_MASK) {
139 case HI_SDS_TYPE_5:
140 {
141 unsigned char *fp = ((unsigned char*)s)-1;
142 *fp = (unsigned char)(HI_SDS_TYPE_5 | (newlen << HI_SDS_TYPE_BITS));
143 }
144 break;
145 case HI_SDS_TYPE_8:
146 HI_SDS_HDR(8,s)->len = (uint8_t)newlen;
147 break;
148 case HI_SDS_TYPE_16:
149 HI_SDS_HDR(16,s)->len = (uint16_t)newlen;
150 break;
151 case HI_SDS_TYPE_32:
152 HI_SDS_HDR(32,s)->len = (uint32_t)newlen;
153 break;
154 case HI_SDS_TYPE_64:
155 HI_SDS_HDR(64,s)->len = (uint64_t)newlen;
156 break;
157 }
158}
159
160static inline void hi_sdsinclen(hisds s, size_t inc) {
161 unsigned char flags = s[-1];
162 switch(flags&HI_SDS_TYPE_MASK) {
163 case HI_SDS_TYPE_5:
164 {
165 unsigned char *fp = ((unsigned char*)s)-1;
166 unsigned char newlen = HI_SDS_TYPE_5_LEN(flags)+(unsigned char)inc;
167 *fp = HI_SDS_TYPE_5 | (newlen << HI_SDS_TYPE_BITS);
168 }
169 break;
170 case HI_SDS_TYPE_8:
171 HI_SDS_HDR(8,s)->len += (uint8_t)inc;
172 break;
173 case HI_SDS_TYPE_16:
174 HI_SDS_HDR(16,s)->len += (uint16_t)inc;
175 break;
176 case HI_SDS_TYPE_32:
177 HI_SDS_HDR(32,s)->len += (uint32_t)inc;
178 break;
179 case HI_SDS_TYPE_64:
180 HI_SDS_HDR(64,s)->len += (uint64_t)inc;
181 break;
182 }
183}
184
185/* hi_sdsalloc() = hi_sdsavail() + hi_sdslen() */
186static inline size_t hi_sdsalloc(const hisds s) {
187 unsigned char flags = s[-1];
188 switch(flags & HI_SDS_TYPE_MASK) {
189 case HI_SDS_TYPE_5:
190 return HI_SDS_TYPE_5_LEN(flags);
191 case HI_SDS_TYPE_8:
192 return HI_SDS_HDR(8,s)->alloc;
193 case HI_SDS_TYPE_16:
194 return HI_SDS_HDR(16,s)->alloc;
195 case HI_SDS_TYPE_32:
196 return HI_SDS_HDR(32,s)->alloc;
197 case HI_SDS_TYPE_64:
198 return HI_SDS_HDR(64,s)->alloc;
199 }
200 return 0;
201}
202
203static inline void hi_sdssetalloc(hisds s, size_t newlen) {
204 unsigned char flags = s[-1];
205 switch(flags&HI_SDS_TYPE_MASK) {
206 case HI_SDS_TYPE_5:
207 /* Nothing to do, this type has no total allocation info. */
208 break;
209 case HI_SDS_TYPE_8:
210 HI_SDS_HDR(8,s)->alloc = (uint8_t)newlen;
211 break;
212 case HI_SDS_TYPE_16:
213 HI_SDS_HDR(16,s)->alloc = (uint16_t)newlen;
214 break;
215 case HI_SDS_TYPE_32:
216 HI_SDS_HDR(32,s)->alloc = (uint32_t)newlen;
217 break;
218 case HI_SDS_TYPE_64:
219 HI_SDS_HDR(64,s)->alloc = (uint64_t)newlen;
220 break;
221 }
222}
223
224hisds hi_sdsnewlen(const void *init, size_t initlen);
225hisds hi_sdsnew(const char *init);
226hisds hi_sdsempty(void);
227hisds hi_sdsdup(const hisds s);
228void hi_sdsfree(hisds s);
229hisds hi_sdsgrowzero(hisds s, size_t len);
230hisds hi_sdscatlen(hisds s, const void *t, size_t len);
231hisds hi_sdscat(hisds s, const char *t);
232hisds hi_sdscatsds(hisds s, const hisds t);
233hisds hi_sdscpylen(hisds s, const char *t, size_t len);
234hisds hi_sdscpy(hisds s, const char *t);
235
236hisds hi_sdscatvprintf(hisds s, const char *fmt, va_list ap);
237#ifdef __GNUC__
238hisds hi_sdscatprintf(hisds s, const char *fmt, ...)
239 __attribute__((format(printf, 2, 3)));
240#else
241hisds hi_sdscatprintf(hisds s, const char *fmt, ...);
242#endif
243
244hisds hi_sdscatfmt(hisds s, char const *fmt, ...);
245hisds hi_sdstrim(hisds s, const char *cset);
246int hi_sdsrange(hisds s, ssize_t start, ssize_t end);
247void hi_sdsupdatelen(hisds s);
248void hi_sdsclear(hisds s);
249int hi_sdscmp(const hisds s1, const hisds s2);
250hisds *hi_sdssplitlen(const char *s, int len, const char *sep, int seplen, int *count);
251void hi_sdsfreesplitres(hisds *tokens, int count);
252void hi_sdstolower(hisds s);
253void hi_sdstoupper(hisds s);
254hisds hi_sdsfromlonglong(long long value);
255hisds hi_sdscatrepr(hisds s, const char *p, size_t len);
256hisds *hi_sdssplitargs(const char *line, int *argc);
257hisds hi_sdsmapchars(hisds s, const char *from, const char *to, size_t setlen);
258hisds hi_sdsjoin(char **argv, int argc, char *sep);
259hisds hi_sdsjoinsds(hisds *argv, int argc, const char *sep, size_t seplen);
260
261/* Low level functions exposed to the user API */
262hisds hi_sdsMakeRoomFor(hisds s, size_t addlen);
263void hi_sdsIncrLen(hisds s, int incr);
264hisds hi_sdsRemoveFreeSpace(hisds s);
265size_t hi_sdsAllocSize(hisds s);
266void *hi_sdsAllocPtr(hisds s);
267
268/* Export the allocator used by SDS to the program using SDS.
269 * Sometimes the program SDS is linked to, may use a different set of
270 * allocators, but may want to allocate or free things that SDS will
271 * respectively free or allocate. */
272void *hi_sds_malloc(size_t size);
273void *hi_sds_realloc(void *ptr, size_t size);
274void hi_sds_free(void *ptr);
275
276#ifdef REDIS_TEST
277int hi_sdsTest(int argc, char *argv[]);
278#endif
279
280#endif /* HIREDIS_SDS_H */
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