added rmutil
parent
5de297b264
commit
6ae1ef7f21
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#set environment variable RM_INCLUDE_DIR to the location of redismodule.h
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CFLAGS = -g -fPIC -lc -lm -O3 -std=gnu99 -I$(RM_INCLUDE_DIR)
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CC=gcc
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CFLAGS = -I$(RM_INCLUDE_DIR)
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.SUFFIXES: .c .so .xo .o
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OBJS=util.o strings.o sds.o
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all: rmutil.a
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clean:
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rm -rf *.xo *.so *.o
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rmutil.a: $(OBJS)
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ar rcs $@ $^
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/* SDSLib 2.0 -- A C dynamic strings library
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*
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* Copyright (c) 2006-2015, Salvatore Sanfilippo <antirez at gmail dot com>
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* Copyright (c) 2015, Oran Agra
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* Copyright (c) 2015, Redis Labs, Inc
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Redis nor the names of its contributors may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __SDS_H
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#define __SDS_H
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#define SDS_MAX_PREALLOC (1024*1024)
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#include <sys/types.h>
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#include <stdarg.h>
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#include <stdint.h>
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typedef char *sds;
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/* Note: sdshdr5 is never used, we just access the flags byte directly.
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* However is here to document the layout of type 5 SDS strings. */
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struct __attribute__ ((__packed__)) sdshdr5 {
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unsigned char flags; /* 3 lsb of type, and 5 msb of string length */
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char buf[];
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};
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struct __attribute__ ((__packed__)) sdshdr8 {
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uint8_t len; /* used */
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uint8_t alloc; /* excluding the header and null terminator */
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unsigned char flags; /* 3 lsb of type, 5 unused bits */
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char buf[];
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};
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struct __attribute__ ((__packed__)) sdshdr16 {
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uint16_t len; /* used */
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uint16_t alloc; /* excluding the header and null terminator */
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unsigned char flags; /* 3 lsb of type, 5 unused bits */
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char buf[];
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};
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struct __attribute__ ((__packed__)) sdshdr32 {
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uint32_t len; /* used */
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uint32_t alloc; /* excluding the header and null terminator */
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unsigned char flags; /* 3 lsb of type, 5 unused bits */
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char buf[];
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};
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struct __attribute__ ((__packed__)) sdshdr64 {
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uint64_t len; /* used */
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uint64_t alloc; /* excluding the header and null terminator */
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unsigned char flags; /* 3 lsb of type, 5 unused bits */
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char buf[];
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};
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#define SDS_TYPE_5 0
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#define SDS_TYPE_8 1
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#define SDS_TYPE_16 2
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#define SDS_TYPE_32 3
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#define SDS_TYPE_64 4
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#define SDS_TYPE_MASK 7
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#define SDS_TYPE_BITS 3
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#define SDS_HDR_VAR(T,s) struct sdshdr##T *sh = (void*)((s)-(sizeof(struct sdshdr##T)));
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#define SDS_HDR(T,s) ((struct sdshdr##T *)((s)-(sizeof(struct sdshdr##T))))
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#define SDS_TYPE_5_LEN(f) ((f)>>SDS_TYPE_BITS)
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static inline size_t sdslen(const sds s) {
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unsigned char flags = s[-1];
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switch(flags&SDS_TYPE_MASK) {
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case SDS_TYPE_5:
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return SDS_TYPE_5_LEN(flags);
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case SDS_TYPE_8:
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return SDS_HDR(8,s)->len;
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case SDS_TYPE_16:
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return SDS_HDR(16,s)->len;
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case SDS_TYPE_32:
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return SDS_HDR(32,s)->len;
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case SDS_TYPE_64:
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return SDS_HDR(64,s)->len;
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}
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return 0;
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}
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static inline size_t sdsavail(const sds s) {
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unsigned char flags = s[-1];
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switch(flags&SDS_TYPE_MASK) {
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case SDS_TYPE_5: {
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return 0;
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}
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case SDS_TYPE_8: {
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SDS_HDR_VAR(8,s);
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return sh->alloc - sh->len;
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}
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case SDS_TYPE_16: {
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SDS_HDR_VAR(16,s);
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return sh->alloc - sh->len;
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}
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case SDS_TYPE_32: {
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SDS_HDR_VAR(32,s);
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return sh->alloc - sh->len;
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}
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case SDS_TYPE_64: {
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SDS_HDR_VAR(64,s);
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return sh->alloc - sh->len;
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}
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}
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return 0;
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}
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static inline void sdssetlen(sds s, size_t newlen) {
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unsigned char flags = s[-1];
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switch(flags&SDS_TYPE_MASK) {
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case SDS_TYPE_5:
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{
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unsigned char *fp = ((unsigned char*)s)-1;
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*fp = SDS_TYPE_5 | (newlen << SDS_TYPE_BITS);
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}
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break;
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case SDS_TYPE_8:
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SDS_HDR(8,s)->len = newlen;
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break;
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case SDS_TYPE_16:
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SDS_HDR(16,s)->len = newlen;
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break;
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case SDS_TYPE_32:
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SDS_HDR(32,s)->len = newlen;
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break;
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case SDS_TYPE_64:
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SDS_HDR(64,s)->len = newlen;
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break;
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}
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}
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static inline void sdsinclen(sds s, size_t inc) {
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unsigned char flags = s[-1];
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switch(flags&SDS_TYPE_MASK) {
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case SDS_TYPE_5:
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{
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unsigned char *fp = ((unsigned char*)s)-1;
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unsigned char newlen = SDS_TYPE_5_LEN(flags)+inc;
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*fp = SDS_TYPE_5 | (newlen << SDS_TYPE_BITS);
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}
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break;
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case SDS_TYPE_8:
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SDS_HDR(8,s)->len += inc;
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break;
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case SDS_TYPE_16:
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SDS_HDR(16,s)->len += inc;
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break;
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case SDS_TYPE_32:
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SDS_HDR(32,s)->len += inc;
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break;
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case SDS_TYPE_64:
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SDS_HDR(64,s)->len += inc;
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break;
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}
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}
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/* sdsalloc() = sdsavail() + sdslen() */
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static inline size_t sdsalloc(const sds s) {
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unsigned char flags = s[-1];
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switch(flags&SDS_TYPE_MASK) {
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case SDS_TYPE_5:
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return SDS_TYPE_5_LEN(flags);
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case SDS_TYPE_8:
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return SDS_HDR(8,s)->alloc;
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case SDS_TYPE_16:
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return SDS_HDR(16,s)->alloc;
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case SDS_TYPE_32:
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return SDS_HDR(32,s)->alloc;
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case SDS_TYPE_64:
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return SDS_HDR(64,s)->alloc;
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}
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return 0;
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}
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static inline void sdssetalloc(sds s, size_t newlen) {
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unsigned char flags = s[-1];
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switch(flags&SDS_TYPE_MASK) {
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case SDS_TYPE_5:
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/* Nothing to do, this type has no total allocation info. */
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break;
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case SDS_TYPE_8:
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SDS_HDR(8,s)->alloc = newlen;
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break;
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case SDS_TYPE_16:
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SDS_HDR(16,s)->alloc = newlen;
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break;
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case SDS_TYPE_32:
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SDS_HDR(32,s)->alloc = newlen;
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break;
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case SDS_TYPE_64:
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SDS_HDR(64,s)->alloc = newlen;
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break;
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}
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}
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sds sdsnewlen(const void *init, size_t initlen);
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sds sdsnew(const char *init);
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sds sdsempty(void);
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sds sdsdup(const sds s);
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void sdsfree(sds s);
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sds sdsgrowzero(sds s, size_t len);
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sds sdscatlen(sds s, const void *t, size_t len);
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sds sdscat(sds s, const char *t);
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sds sdscatsds(sds s, const sds t);
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sds sdscpylen(sds s, const char *t, size_t len);
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sds sdscpy(sds s, const char *t);
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sds sdscatvprintf(sds s, const char *fmt, va_list ap);
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#ifdef __GNUC__
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sds sdscatprintf(sds s, const char *fmt, ...)
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__attribute__((format(printf, 2, 3)));
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#else
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sds sdscatprintf(sds s, const char *fmt, ...);
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#endif
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sds sdscatfmt(sds s, char const *fmt, ...);
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sds sdstrim(sds s, const char *cset);
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void sdsrange(sds s, int start, int end);
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void sdsupdatelen(sds s);
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void sdsclear(sds s);
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int sdscmp(const sds s1, const sds s2);
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sds *sdssplitlen(const char *s, int len, const char *sep, int seplen, int *count);
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void sdsfreesplitres(sds *tokens, int count);
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void sdstolower(sds s);
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void sdstoupper(sds s);
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sds sdsfromlonglong(long long value);
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sds sdscatrepr(sds s, const char *p, size_t len);
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sds *sdssplitargs(const char *line, int *argc);
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sds sdsmapchars(sds s, const char *from, const char *to, size_t setlen);
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sds sdsjoin(char **argv, int argc, char *sep);
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sds sdsjoinsds(sds *argv, int argc, const char *sep, size_t seplen);
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/* Low level functions exposed to the user API */
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sds sdsMakeRoomFor(sds s, size_t addlen);
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void sdsIncrLen(sds s, int incr);
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sds sdsRemoveFreeSpace(sds s);
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size_t sdsAllocSize(sds s);
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void *sdsAllocPtr(sds s);
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/* Export the allocator used by SDS to the program using SDS.
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* Sometimes the program SDS is linked to, may use a different set of
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* allocators, but may want to allocate or free things that SDS will
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* respectively free or allocate. */
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void *sds_malloc(size_t size);
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void *sds_realloc(void *ptr, size_t size);
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void sds_free(void *ptr);
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#ifdef REDIS_TEST
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int sdsTest(int argc, char *argv[]);
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#endif
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#endif
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#include <string.h>
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#include <sys/param.h>
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#include <ctype.h>
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#include "strings.h"
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#include "sds.h"
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RedisModuleString *RMUtils_CreateFormattedString(RedisModuleCtx *ctx, const char *fmt, ...) {
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sds s = sdsempty();
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va_list ap;
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va_start(ap, fmt);
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s = sdscatvprintf(s, fmt, ap);
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va_end(ap);
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RedisModuleString *ret = RedisModule_CreateString(ctx, (const char *)s, sdslen(s));
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sdsfree(s);
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return ret;
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}
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int RMUtils_StringEquals(RedisModuleString *s1, RedisModuleString *s2) {
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const char *c1, *c2;
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size_t l1, l2;
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c1 = RedisModule_StringPtrLen(s1, &l1);
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c2 = RedisModule_StringPtrLen(s2, &l2);
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return strncasecmp(c1, c2, MIN(l1,l2)) == 0;
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}
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void RMUtils_StringToLower(RedisModuleString *s) {
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size_t l;
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char *c = (char *)RedisModule_StringPtrLen(s, &l);
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size_t i;
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for (i = 0; i < l; i++) {
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*c = tolower(*c);
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++c;
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}
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}
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void RMUtils_StringToUpper(RedisModuleString *s) {
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size_t l;
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char *c = (char *)RedisModule_StringPtrLen(s, &l);
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size_t i;
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for (i = 0; i < l; i++) {
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*c = toupper(*c);
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++c;
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}
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}
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#ifndef __RMUTIL_STRINGS_H__
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#define __RMUTIL_STRINGS_H__
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#include <redismodule.h>
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/*
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* Create a new RedisModuleString object from a printf-style format and arguments.
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* Note that RedisModuleString objects CANNOT be used as formatting arguments.
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*/
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RedisModuleString *RMUtils_CreateFormattedString(RedisModuleCtx *ctx, const char *fmt, ...);
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/* Return 1 if the two strings are equal. Case *sensitive* */
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int RMUtils_StringEquals(RedisModuleString *s1, RedisModuleString *s2);
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/* Converts a redis string to lowercase in place without reallocating anything */
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void RMUtils_StringToLower(RedisModuleString *s);
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/* Converts a redis string to uppercase in place without reallocating anything */
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void RMUtils_StringToUpper(RedisModuleString *s);
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#endif
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#include <stdlib.h>
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#include <errno.h>
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#include <math.h>
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#include <ctype.h>
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#include <sys/time.h>
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#include <limits.h>
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#include <string.h>
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#include "util.h"
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/**
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Check if an argument exists in an argument list (argv,argc), starting at offset.
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@return 0 if it doesn't exist, otherwise the offset it exists in
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*/
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int RMUtil_ArgExists(const char *arg, RedisModuleString **argv, int argc, int offset) {
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for (; offset < argc; offset++) {
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size_t l;
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const char *carg = RedisModule_StringPtrLen(argv[offset], &l);
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if (carg != NULL && strncasecmp(carg, arg, l) == 0) {
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return offset;
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}
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}
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return 0;
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}
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RMUtilInfo *RMUtil_GetRedisInfo(RedisModuleCtx *ctx) {
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RedisModuleCallReply *r = RedisModule_Call(ctx, "INFO", "c", "all");
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if (r == NULL || RedisModule_CallReplyType(r) == REDISMODULE_REPLY_ERROR) {
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return NULL;
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}
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int cap = 100; // rough estimate of info lines
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RMUtilInfo *info = malloc(sizeof(RMUtilInfo));
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info->entries = calloc(cap, sizeof(RMUtilInfoEntry));
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int i = 0;
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char *text = (char *)RedisModule_StringPtrLen(RedisModule_CreateStringFromCallReply(r), NULL);
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char *line = text;
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while (line) {
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char *line = strsep(&text, "\r\n");
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if (line == NULL) break;
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if (!(*line >= 'a' && *line <= 'z')) { //skip non entry lines
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continue;
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}
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char *key = strsep(&line, ":");
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info->entries[i].key = key;
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info->entries[i].val = line;
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printf("Got info '%s' = '%s'\n", key, line);
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i++;
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if (i >= cap) {
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cap *=2;
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info->entries = realloc(info->entries, cap*sizeof(RMUtilInfoEntry));
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}
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}
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info->numEntries = i;
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return info;
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}
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void RMUtilRedisInfo_Free(RMUtilInfo *info) {
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free(info->entries);
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free(info);
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}
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int RMUtilInfo_GetInt(RMUtilInfo *info, const char *key, long long *val) {
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const char *p = NULL;
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if (!RMUtilInfo_GetString(info, key, &p)) {
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return 0;
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}
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*val = strtoll(p, NULL, 10);
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if ((errno == ERANGE && (*val == LONG_MAX || *val == LONG_MIN)) ||
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||||
(errno != 0 && *val == 0)) {
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*val = -1;
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return 0;
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}
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||||
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return 1;
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}
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int RMUtilInfo_GetString(RMUtilInfo *info, const char *key, const char **str) {
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int i;
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for (i = 0; i < info->numEntries; i++) {
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||||
if (!strcmp(key, info->entries[i].key)) {
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*str = info->entries[i].val;
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return 1;
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||||
}
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||||
}
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return 0;
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}
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|
||||
int RMUtilInfo_GetDouble(RMUtilInfo *info, const char *key, double *d) {
|
||||
const char *p = NULL;
|
||||
if (!RMUtilInfo_GetString(info, key, &p)) {
|
||||
printf("not found %s\n", key);
|
||||
return 0;
|
||||
}
|
||||
|
||||
*d = strtod(p, NULL);
|
||||
printf("p: %s, d: %f\n",p,*d);
|
||||
if ((errno == ERANGE && (*d == HUGE_VAL || *d == -HUGE_VAL)) ||
|
||||
(errno != 0 && *d == 0)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
return 1;
|
||||
}
|
@ -0,0 +1,67 @@
|
||||
#ifndef __UTIL_H__
|
||||
#define __UTIL_H__
|
||||
|
||||
#include <redismodule.h>
|
||||
|
||||
// make sure the response is not NULL or an error, and if it is sends the error to the client and exit the current function
|
||||
#define REDIS_ASSERT_NOERROR(r) \
|
||||
if (r == NULL) { \
|
||||
return RedisModule_ReplyWithError(ctx,"ERR reply is NULL"); \
|
||||
} else if (RedisModule_CallReplyType(r) == REDISMODULE_REPLY_ERROR) { \
|
||||
RedisModule_ReplyWithCallReply(ctx,r); \
|
||||
return REDISMODULE_ERR; \
|
||||
}
|
||||
|
||||
|
||||
/* RedisModule utilities. */
|
||||
|
||||
/* Return the offset of an arg if it exists in the arg list, or 0 if it's not there */
|
||||
int RMUtil_ArgExists(const char *arg, RedisModuleString **argv, int argc, int offset);
|
||||
|
||||
// NOT IMPLEMENTED YET
|
||||
int RMUtil_ParseArgs(RedisModuleString **argv, int argc, const char *fmt, ...);
|
||||
|
||||
// A single key/value entry in a redis info map
|
||||
typedef struct {
|
||||
const char *key;
|
||||
const char *val;
|
||||
} RMUtilInfoEntry;
|
||||
|
||||
// Representation of INFO command response, as a list of k/v pairs
|
||||
typedef struct {
|
||||
RMUtilInfoEntry *entries;
|
||||
int numEntries;
|
||||
} RMUtilInfo;
|
||||
|
||||
/*
|
||||
* Get redis INFO result and parse it as RMUtilInfo.
|
||||
* Returns NULL if something goes wrong.
|
||||
* The resulting object needs to be freed with RMUtilRedisInfo_Free
|
||||
*/
|
||||
RMUtilInfo *RMUtil_GetRedisInfo(RedisModuleCtx *ctx);
|
||||
|
||||
/*
|
||||
* Free an RMUtilInfo object and its entries
|
||||
*/
|
||||
void RMUtilRedisInfo_Free(RMUtilInfo *info);
|
||||
|
||||
/**
|
||||
* Get an integer value from an info object. Returns 1 if the value was found and
|
||||
* is an integer, 0 otherwise. the value is placed in 'val'
|
||||
*/
|
||||
int RMUtilInfo_GetInt(RMUtilInfo *info, const char *key, long long *val);
|
||||
|
||||
/*
|
||||
* Get a string value from an info object. The value is placed in str.
|
||||
* Returns 1 if the key was found, 0 if not
|
||||
*/
|
||||
int RMUtilInfo_GetString(RMUtilInfo *info, const char *key, const char **str);
|
||||
|
||||
/*
|
||||
* Get a double value from an info object. Returns 1 if the value was found and is
|
||||
* a correctly formatted double, 0 otherwise. the value is placed in 'd'
|
||||
*/
|
||||
int RMUtilInfo_GetDouble(RMUtilInfo *info, const char *key, double *d);
|
||||
|
||||
|
||||
#endif
|
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Reference in New Issue