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+/*
+ * Copyright (c) 2009-2012, Pieter Noordhuis <pcnoordhuis at gmail dot com>
+ * Copyright (c) 2009-2012, 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.
+ * * 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 _ZIPLIST_H
+#define _ZIPLIST_H
+
+#define ZIPLIST_HEAD 0
+#define ZIPLIST_TAIL 1
+
+/* Each entry in the ziplist is either a string or an integer. */
+typedef struct {
+ /* When string is used, it is provided with the length (slen). */
+ unsigned char *sval;
+ unsigned int slen;
+ /* When integer is used, 'sval' is NULL, and lval holds the value. */
+ long long lval;
+} ziplistEntry;
+
+unsigned char *ziplistNew(void);
+unsigned char *ziplistMerge(unsigned char **first, unsigned char **second);
+unsigned char *ziplistPush(unsigned char *zl, unsigned char *s, unsigned int slen, int where);
+unsigned char *ziplistIndex(unsigned char *zl, int index);
+unsigned char *ziplistNext(unsigned char *zl, unsigned char *p);
+unsigned char *ziplistPrev(unsigned char *zl, unsigned char *p);
+unsigned int ziplistGet(unsigned char *p, unsigned char **sval, unsigned int *slen, long long *lval);
+unsigned char *ziplistInsert(unsigned char *zl, unsigned char *p, unsigned char *s, unsigned int slen);
+unsigned char *ziplistDelete(unsigned char *zl, unsigned char **p);
+unsigned char *ziplistDeleteRange(unsigned char *zl, int index, unsigned int num);
+unsigned char *ziplistReplace(unsigned char *zl, unsigned char *p, unsigned char *s, unsigned int slen);
+unsigned int ziplistCompare(unsigned char *p, unsigned char *s, unsigned int slen);
+unsigned char *ziplistFind(unsigned char *zl, unsigned char *p, unsigned char *vstr, unsigned int vlen, unsigned int skip);
+unsigned int ziplistLen(unsigned char *zl);
+size_t ziplistBlobLen(unsigned char *zl);
+void ziplistRepr(unsigned char *zl);
+typedef int (*ziplistValidateEntryCB)(unsigned char* p, unsigned int head_count, void* userdata);
+int ziplistValidateIntegrity(unsigned char *zl, size_t size, int deep,
+ ziplistValidateEntryCB entry_cb, void *cb_userdata);
+void ziplistRandomPair(unsigned char *zl, unsigned long total_count, ziplistEntry *key, ziplistEntry *val);
+void ziplistRandomPairs(unsigned char *zl, unsigned int count, ziplistEntry *keys, ziplistEntry *vals);
+unsigned int ziplistRandomPairsUnique(unsigned char *zl, unsigned int count, ziplistEntry *keys, ziplistEntry *vals);
+int ziplistSafeToAdd(unsigned char* zl, size_t add);
+
+#ifdef REDIS_TEST
+int ziplistTest(int argc, char *argv[], int flags);
+#endif
+
+#endif /* _ZIPLIST_H */