zlib

C/C++ Packing and Compression [closed]

由 谁说我不能喝 提交于 2020-01-12 21:05:19
问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . I'm working on a commercial project that requires a couple of files to be bundled (packed) into an archive and then compressed. Right now we have zlib in our utility library, but it doesn't look like zlib has the functionality to compress multiple files into one archive. Does

C/C++ Packing and Compression [closed]

由 本秂侑毒 提交于 2020-01-12 21:04:10
问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . I'm working on a commercial project that requires a couple of files to be bundled (packed) into an archive and then compressed. Right now we have zlib in our utility library, but it doesn't look like zlib has the functionality to compress multiple files into one archive. Does

redis集群搭建

由 我的未来我决定 提交于 2020-01-12 12:40:42
redis集群搭建 Redis 是一个开源的 key-value 存储系统，由于出众的性能，大部分互联网企业都用来做服务器端缓存。Redis 在3.0版本前只支持单实例模式，虽然支持主从模式、哨兵模式部署来解决单点故障，但是现在互联网企业动辄大几百G的数据，可完全是没法满足业务的需求，所以，Redis 在 3.0 版本以后就推出了集群模式。 Redis 集群采用了P2P的模式，完全去中心化。Redis 把所有的 Key 分成了 16384 个 slot，每个 Redis 实例负责其中一部分 slot 。集群中的所有信息（节点、端口、slot等），都通过节点之间定期的数据交换而更新。 Redis 客户端可以在任意一个 Redis 实例发出请求，如果所需数据不在该实例中，通过重定向命令引导客户端访问所需的实例。 安装环境 OS: centos 7.2.1511 redis : 最新版 v4.0.1 单台redis安装 下载 wget http://download.redis.io/releases/redis-4.0.10.tar.gz tar zxvf redis-4.0.10.tar.gz mv redis-4.0.10 /usr/local/redis/ 如果是离线安装，则需要从官网下载指定版本，然后上传到生产环境。这里安装的是最新版redis，指定安装路径 /usr

zlib c++ and extracting files

由 北慕城南 提交于 2020-01-12 05:24:09
问题 I have started to use zlib 1.2.5 and I do not see any routine to extract from a zip file? I read about a minizip application, part of the distribution. Is that how it is supposed to be done? 回答1: Yes, it does it well. (But if ever you don't like C code, you should look at 7-zip SDK that have code in C++ and C#.) All the functions to browse and uncompress the files from a zip archive are in unzip.h All the functions to compress and add files to a zip archive are in zip.h (look at contrib

wget安装nginx

由 痞子三分冷 提交于 2020-01-11 14:34:24
#下载: wget http: //nginx.org/download/nginx-1.8.0.tar.gz #解压: tar -zxvf nginx-1 .8 .0 .tar .gz #安装依赖插件 yum install -y gcc gcc-c++ ncurses-devel perl pcre pcre-devel zlib gzip zlib-devel #进入目录编译安装 cd nginx-1 .8 .0 ./configure make && make install 来源： https://www.cnblogs.com/waibizi/p/12179625.html

Adler-32 checksum(s) in a PNG file

由 ＊爱你＆永不变心＊ 提交于 2020-01-11 11:21:26
问题 I am currently writing a C program that builds a PNG image from a data file generated by another. The image is a palette type. Is the Adler-32 checksum calculated on the uncompressed data for... a) each compressed block within an IDAT data chunk? b) all compressed blocks within an IDAT data chunk? c) all compressed blocks spanning all IDAT data chunks? From the documents at http://www.w3.org/TR/PNG/, http://tools.ietf.org/html/rfc1950 and rfc1951 (at the same address as previuos) I am of the

Concatenate multiple zlib compressed data streams into a single stream efficiently

由 被刻印的时光 ゝ 提交于 2020-01-10 05:23:24
问题 If I have several binary strings with compressed zlib data, is there a way to efficiently combine them into a single compressed string without decompressing everything? Example of what I have to do now: c1 = zlib.compress("The quick brown fox jumped over the lazy dog. ") c2 = zlib.compress("We ride at dawn! ") c = zlib.compress(zlib.decompress(c1)+zlib.decompress(c2)) # Warning: Inefficient! d1 = zlib.decompress(c1) d2 = zlib.decompress(c2) d = zlib.decompress(c) assert d1+d2 == d # This will

Concatenate multiple zlib compressed data streams into a single stream efficiently

由 北城以北 提交于 2020-01-10 05:22:05
问题 If I have several binary strings with compressed zlib data, is there a way to efficiently combine them into a single compressed string without decompressing everything? Example of what I have to do now: c1 = zlib.compress("The quick brown fox jumped over the lazy dog. ") c2 = zlib.compress("We ride at dawn! ") c = zlib.compress(zlib.decompress(c1)+zlib.decompress(c2)) # Warning: Inefficient! d1 = zlib.decompress(c1) d2 = zlib.decompress(c2) d = zlib.decompress(c) assert d1+d2 == d # This will

stm32 zip gz zlib研究并移植

由 心已入冬 提交于 2020-01-10 04:56:52
今天，zlib是一种事实上的业界标准，以至于在标准文档中，zlib和DEFLATE常常互换使用。数以千计的应用程序直接或间接依靠zlib压缩函式库，包括： * Linux核心：使用zlib以实作网络协定的压缩、档案系统的压缩以及开机时 解压缩 自身的核心。 * libpng，用于PNG图形格式的一个实现，对bitmap数据规定了DEFLATE作为流压缩方法。 zlib库已经有人移植到RTT上了，并作为RTT的一个组件在可以在建工程的时候添加进去，我的硬件平台是STM32F437II，那个组件仅仅是移植了zlib库，并提供了一个例程，zlib_sample.c，这个例程很重要，我移植gzip zip的时候就是参考这个例程的，里面月很多系统调用，比如fopen()， 在RTT下没有，这是在stdio.h中声明的一个函数，但函数定义找不到，最终与RTT的接口在哪我也不知道，但是可以确实的是在RTT下此函数可以用， 还有很多类似的问题。 估计这个程序初衷就不是让单片机用的，里面充斥的大量的系统定义，类似 #if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__)) #if defined(USE_FILE32API) #define fopen64 fopen #define ftello64 ftell

arm linux 移植 PHP

由 巧了我就是萌 提交于 2020-01-09 13:13:58
背景： PHP 是世界上最好的语言。 host平台　　 ：Ubuntu 16.04 arm平台　　 ： 3531d arm-gcc　　 ：4.9.4 php 　　 　　： 7.1.30 zlib 　　　　 ： 1.2.11 libxml2 　　 ： 2.9.9 libiconv 　　 ： 1.15 主机准备： 使用以下脚本 ## # Copyright By Schips, All Rights Reserved # https://gitee.com/schips/ # File Name: make.sh # Created : Fri 22 Nov 2019 10:38:53 AM CST ## #!/bin/sh HOST=arm-hisiv500-linux PHP=php-7.1.30 ZLIB=zlib-1.2.11 XML2=libxml2-2.9.9 ICONV=libiconv-1.15 FIN_INSTALL=/usr/${PHP} BASE=`pwd` OUTPUT_PATH=${BASE}/install ARM_GCC=${HOST}-gcc make_dirs () { cd ${BASE} mkdir compressed install source -p } download_package () { cd ${BASE}/compressed
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