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diff --git a/deps/hiredis/sds.h b/deps/hiredis/sds.h
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+/* 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 HIREDIS_SDS_H
+#define HIREDIS_SDS_H
+
+#define HI_SDS_MAX_PREALLOC (1024*1024)
+#ifdef _MSC_VER
+typedef long long ssize_t;
+#define SSIZE_MAX (LLONG_MAX >> 1)
+#ifndef __clang__
+#define __attribute__(x)
+#endif
+#endif
+
+#include <sys/types.h>
+#include <stdarg.h>
+#include <stdint.h>
+
+typedef char *hisds;
+
+/* 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__)) hisdshdr5 {
+ unsigned char flags; /* 3 lsb of type, and 5 msb of string length */
+ char buf[];
+};
+struct __attribute__ ((__packed__)) hisdshdr8 {
+ 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__)) hisdshdr16 {
+ 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__)) hisdshdr32 {
+ 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__)) hisdshdr64 {
+ 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 HI_SDS_TYPE_5 0
+#define HI_SDS_TYPE_8 1
+#define HI_SDS_TYPE_16 2
+#define HI_SDS_TYPE_32 3
+#define HI_SDS_TYPE_64 4
+#define HI_SDS_TYPE_MASK 7
+#define HI_SDS_TYPE_BITS 3
+#define HI_SDS_HDR_VAR(T,s) struct hisdshdr##T *sh = (struct hisdshdr##T *)((s)-(sizeof(struct hisdshdr##T)));
+#define HI_SDS_HDR(T,s) ((struct hisdshdr##T *)((s)-(sizeof(struct hisdshdr##T))))
+#define HI_SDS_TYPE_5_LEN(f) ((f)>>HI_SDS_TYPE_BITS)
+
+static inline size_t hi_sdslen(const hisds s) {
+ unsigned char flags = s[-1];
+ switch(flags & HI_SDS_TYPE_MASK) {
+ case HI_SDS_TYPE_5:
+ return HI_SDS_TYPE_5_LEN(flags);
+ case HI_SDS_TYPE_8:
+ return HI_SDS_HDR(8,s)->len;
+ case HI_SDS_TYPE_16:
+ return HI_SDS_HDR(16,s)->len;
+ case HI_SDS_TYPE_32:
+ return HI_SDS_HDR(32,s)->len;
+ case HI_SDS_TYPE_64:
+ return HI_SDS_HDR(64,s)->len;
+ }
+ return 0;
+}
+
+static inline size_t hi_sdsavail(const hisds s) {
+ unsigned char flags = s[-1];
+ switch(flags&HI_SDS_TYPE_MASK) {
+ case HI_SDS_TYPE_5: {
+ return 0;
+ }
+ case HI_SDS_TYPE_8: {
+ HI_SDS_HDR_VAR(8,s);
+ return sh->alloc - sh->len;
+ }
+ case HI_SDS_TYPE_16: {
+ HI_SDS_HDR_VAR(16,s);
+ return sh->alloc - sh->len;
+ }
+ case HI_SDS_TYPE_32: {
+ HI_SDS_HDR_VAR(32,s);
+ return sh->alloc - sh->len;
+ }
+ case HI_SDS_TYPE_64: {
+ HI_SDS_HDR_VAR(64,s);
+ return sh->alloc - sh->len;
+ }
+ }
+ return 0;
+}
+
+static inline void hi_sdssetlen(hisds s, size_t newlen) {
+ unsigned char flags = s[-1];
+ switch(flags&HI_SDS_TYPE_MASK) {
+ case HI_SDS_TYPE_5:
+ {
+ unsigned char *fp = ((unsigned char*)s)-1;
+ *fp = (unsigned char)(HI_SDS_TYPE_5 | (newlen << HI_SDS_TYPE_BITS));
+ }
+ break;
+ case HI_SDS_TYPE_8:
+ HI_SDS_HDR(8,s)->len = (uint8_t)newlen;
+ break;
+ case HI_SDS_TYPE_16:
+ HI_SDS_HDR(16,s)->len = (uint16_t)newlen;
+ break;
+ case HI_SDS_TYPE_32:
+ HI_SDS_HDR(32,s)->len = (uint32_t)newlen;
+ break;
+ case HI_SDS_TYPE_64:
+ HI_SDS_HDR(64,s)->len = (uint64_t)newlen;
+ break;
+ }
+}
+
+static inline void hi_sdsinclen(hisds s, size_t inc) {
+ unsigned char flags = s[-1];
+ switch(flags&HI_SDS_TYPE_MASK) {
+ case HI_SDS_TYPE_5:
+ {
+ unsigned char *fp = ((unsigned char*)s)-1;
+ unsigned char newlen = HI_SDS_TYPE_5_LEN(flags)+(unsigned char)inc;
+ *fp = HI_SDS_TYPE_5 | (newlen << HI_SDS_TYPE_BITS);
+ }
+ break;
+ case HI_SDS_TYPE_8:
+ HI_SDS_HDR(8,s)->len += (uint8_t)inc;
+ break;
+ case HI_SDS_TYPE_16:
+ HI_SDS_HDR(16,s)->len += (uint16_t)inc;
+ break;
+ case HI_SDS_TYPE_32:
+ HI_SDS_HDR(32,s)->len += (uint32_t)inc;
+ break;
+ case HI_SDS_TYPE_64:
+ HI_SDS_HDR(64,s)->len += (uint64_t)inc;
+ break;
+ }
+}
+
+/* hi_sdsalloc() = hi_sdsavail() + hi_sdslen() */
+static inline size_t hi_sdsalloc(const hisds s) {
+ unsigned char flags = s[-1];
+ switch(flags & HI_SDS_TYPE_MASK) {
+ case HI_SDS_TYPE_5:
+ return HI_SDS_TYPE_5_LEN(flags);
+ case HI_SDS_TYPE_8:
+ return HI_SDS_HDR(8,s)->alloc;
+ case HI_SDS_TYPE_16:
+ return HI_SDS_HDR(16,s)->alloc;
+ case HI_SDS_TYPE_32:
+ return HI_SDS_HDR(32,s)->alloc;
+ case HI_SDS_TYPE_64:
+ return HI_SDS_HDR(64,s)->alloc;
+ }
+ return 0;
+}
+
+static inline void hi_sdssetalloc(hisds s, size_t newlen) {
+ unsigned char flags = s[-1];
+ switch(flags&HI_SDS_TYPE_MASK) {
+ case HI_SDS_TYPE_5:
+ /* Nothing to do, this type has no total allocation info. */
+ break;
+ case HI_SDS_TYPE_8:
+ HI_SDS_HDR(8,s)->alloc = (uint8_t)newlen;
+ break;
+ case HI_SDS_TYPE_16:
+ HI_SDS_HDR(16,s)->alloc = (uint16_t)newlen;
+ break;
+ case HI_SDS_TYPE_32:
+ HI_SDS_HDR(32,s)->alloc = (uint32_t)newlen;
+ break;
+ case HI_SDS_TYPE_64:
+ HI_SDS_HDR(64,s)->alloc = (uint64_t)newlen;
+ break;
+ }
+}
+
+hisds hi_sdsnewlen(const void *init, size_t initlen);
+hisds hi_sdsnew(const char *init);
+hisds hi_sdsempty(void);
+hisds hi_sdsdup(const hisds s);
+void hi_sdsfree(hisds s);
+hisds hi_sdsgrowzero(hisds s, size_t len);
+hisds hi_sdscatlen(hisds s, const void *t, size_t len);
+hisds hi_sdscat(hisds s, const char *t);
+hisds hi_sdscatsds(hisds s, const hisds t);
+hisds hi_sdscpylen(hisds s, const char *t, size_t len);
+hisds hi_sdscpy(hisds s, const char *t);
+
+hisds hi_sdscatvprintf(hisds s, const char *fmt, va_list ap);
+#ifdef __GNUC__
+hisds hi_sdscatprintf(hisds s, const char *fmt, ...)
+ __attribute__((format(printf, 2, 3)));
+#else
+hisds hi_sdscatprintf(hisds s, const char *fmt, ...);
+#endif
+
+hisds hi_sdscatfmt(hisds s, char const *fmt, ...);
+hisds hi_sdstrim(hisds s, const char *cset);
+int hi_sdsrange(hisds s, ssize_t start, ssize_t end);
+void hi_sdsupdatelen(hisds s);
+void hi_sdsclear(hisds s);
+int hi_sdscmp(const hisds s1, const hisds s2);
+hisds *hi_sdssplitlen(const char *s, int len, const char *sep, int seplen, int *count);
+void hi_sdsfreesplitres(hisds *tokens, int count);
+void hi_sdstolower(hisds s);
+void hi_sdstoupper(hisds s);
+hisds hi_sdsfromlonglong(long long value);
+hisds hi_sdscatrepr(hisds s, const char *p, size_t len);
+hisds *hi_sdssplitargs(const char *line, int *argc);
+hisds hi_sdsmapchars(hisds s, const char *from, const char *to, size_t setlen);
+hisds hi_sdsjoin(char **argv, int argc, char *sep);
+hisds hi_sdsjoinsds(hisds *argv, int argc, const char *sep, size_t seplen);
+
+/* Low level functions exposed to the user API */
+hisds hi_sdsMakeRoomFor(hisds s, size_t addlen);
+void hi_sdsIncrLen(hisds s, int incr);
+hisds hi_sdsRemoveFreeSpace(hisds s);
+size_t hi_sdsAllocSize(hisds s);
+void *hi_sdsAllocPtr(hisds 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 *hi_sds_malloc(size_t size);
+void *hi_sds_realloc(void *ptr, size_t size);
+void hi_sds_free(void *ptr);
+
+#ifdef REDIS_TEST
+int hi_sdsTest(int argc, char *argv[]);
+#endif
+
+#endif /* HIREDIS_SDS_H */
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