zlib

centos 安装PIL及相关问题解决

由 情到浓时终转凉″ 提交于 2019-12-07 21:11:18
1、安装 下载安装包，me用的是Imaging-1.1.7.tar.gz; 方法： 安装前请确保这些 libjpeg libjpeg-devel zlib zlib-devel freetype freetype-devel lcms lcms-devel已安装，没有的话，执行： yum install libjpeg libjpeg-devel zlib zlib-devel freetype freetype-devel lcms lcms-deve 获取Imaging-1.1.7.tar.gz并安装 # 下载 wget http://effbot.org/downloads/Imaging-1.1.7.tar.gz tar zxvf Imaging-1.1.7.tar.gz # 解压 cd Imaging-1.1.7 vim setup.py # 修改 ZLIB_ROOT = ('/usr/local/zlib/lib','/usr/local/zlib/include') # 或者使用libinclude('/usr/lib/zlib') FREETYPE_ROOT = ('/usr/local/freetype/lib','/usr/local/freetype/include') JPEG_ROOT = ('/usr/local/jpeg8/lib','/usr

Decompressing a string using Java.util.zip.Inflater

由 ぃ、小莉子 提交于 2019-12-07 15:20:33
问题 I'm trying to decode a string that I receive. It's compressed using the deflater here: https://github.com/dankogai/js-deflate And then base64 encoded. However when I use the java inflater I get the following error message: unknown compression method. import sun.misc.BASE64Decoder; public void org() throws Exception{ BASE64Decoder decoder = new BASE64Decoder(); try { String inputString = "84VWAVDY"; byte[] decodedByteArray = decoder.decodeBuffer(inputString); // Decompress the bytes Inflater

CentOS升级Python2.6到Python2.7并安装pip

由 爱⌒轻易说出口 提交于 2019-12-07 14:31:52
貌似CentOS 6.X系统默认安装的Python都是2.6版本的？平时使用以及很多的库都是要求用到2.7版本或以上，所以新系统要做的第一件事必不可少就是升级Python啦！在这里做个简单的升级操作记录 :) 升级Python 系统默认安装的Python是2.6.6的，我们需要升级到Python2.7，用 wget 命令从官方下载源文件，然后解压进行编译 wget http://www.python.org/ftp/python/2.7.10/Python-2.7.10.tar.xz unxz Python-2.7.10.tar.xz tar -vxf Python-2.7.10.tar 执行完以上命令会解压得到 Python-2.7.10 这个文件夹，进入该目录并执行以下命令进行配置 ./configure --enable-shared --enable-loadable-sqlite-extensions --with-zlib 其中 --enable-loadable-sqlite-extensions 是sqlite的扩展，如果需要使用的话则带上这个选项。 之后执行 vi ./Modules/Setup 找到 #zlib zlibmodule.c -I$(prefix)/include -L$(exec_prefix)/lib -lz 去掉注释并保存，然后进行编译和安装

use zlib to list directory structure of apk file in android

由 旧巷老猫 提交于 2019-12-07 12:16:24
问题 I am current working on an Android project. Since the android apk file is essentially a zip file with a different file extension, is it possible to use zlib to file the directory structure of the asset folder? The goal is to write some interfaces like opendir() and readdir() so that I can do something like: DIR* dir = zip_opendir("somedirectory"); struct dirent* entry; while (0 != (entry = zip_readdir(dir))){ __android_log_print(ANDROID_LOG_ERROR, "DIR", "entry: %s\n", entry->d_name); }

Boost Iostreams zlib_error with Custom Source

由 爷，独闯天下 提交于 2019-12-07 10:40:50
问题 I am trying to use a zlib_decompressor to decompress data through an istreambuf_iterator . I couldn't find an in built way to use an input iterator as input to a stream (please point out a way if one exists already) so I wrote this source: template <class cha_type, class iterator_type> class IteratorSource { public: typedef cha_type char_type; typedef boost::iostreams::source_tag category; iterator_type& i; iterator_type eof; IteratorSource(iterator_type& it, iterator_type end) : i(it), eof

One library for deflate, gzip, and zlib in .net

由 给你一囗甜甜゛ 提交于 2019-12-07 08:46:06
问题 First, let's define some commonly confused terms: deflate = compression_algorithm; zlib = header + deflate + trailer; gzip = header + deflate + trailer; I'm looking for a library that will basically let me do the following: if(method == "gzip"){ Response.Filter = new CompressionLibrary.OutputStream(Response.Filter, CompressionLibrary.Formats.GZIP); } else if(method == "deflate"){ Response.Filter = new CompressionLibrary.OutputStream(Response.Filter, CompressionLibrary.Formats.DEFLATE); } else

zlib学习小结

由 大憨熊 提交于 2019-12-07 08:32:40
官方手册 : http://www.zlib.net/manual.html 参考连接 : http://blog.csdn.net/zhoudaxia/article/details/8039519 http://www.oschina.net/code/snippet_65636_22542 http://blog.163.com/bh_binghu/blog/static/94553512011626102054571/ 请多多支持以上作者... 另外,推荐下载源码同步学习. 研究了好久的zlib,今天终于可以拿得出手了.这里分享一下使用的经验. 基础数据结构 z_stream : 压缩算法,压缩程度以及输入输出buffer和长度等都保存在这里,可以理解为压缩上下文. 常用的函数 deflateInit : 参数比较少,里面的实现其实是调用的deflateInit2 deflateInit2 : 压缩初始化的基础函数,有很多参数,下面会重点介绍 deflate : 压缩函数. deflateEnd : 压缩完成以后,释放空间,但是注意,仅仅是释放deflateInit中申请的空间,自己申请的空间还是需要自己释放. inflateInit : 解压初始化函数,内部调用的inflateInit2. inflateInit2 : 解压初始化的基础函数.后面重点介绍. infalte

Reusing a data dictionary for 'Deflate' separate from the compressed data

由 匆匆过客 提交于 2019-12-07 05:56:19
问题 I am storing many chunks of base64 encoded 64-bit doubles in an XML file. The double data all looks similar. The double data is currently being compressed using the java 'Deflate' algorithm before the encoding, however each chunk of binary data in the file will have its own deflate data dictionary, which is an overhead I would like to greatly lessen. The 'Deflater' class has a 'setDictionary' method which I would like to use. So questions are: 1). Does anyone have any suggestions for how to

can't not install Distribute, zlib

由 一世执手 提交于 2019-12-07 05:53:48
问题 At first, I only want to use install feedparser with python3.2, while it need Distribute. When I install Distribute with python3.2 setup.py install I got File "/usr/local/lib/python3.2/zipfile.py", line 687, in __init__ "Compression requires the (missing) zlib module") RuntimeError: Compression requires the (missing) zlib module Then I downloaded zlib and installed it with ./configure --prefix=/usr/local/python3.2 make sudo make install After the installation, and tried to install Distribute,

How can we distinguish deflate stream from deflateRaw stream?

由 假装没事ソ 提交于 2019-12-07 04:11:49
问题 Some HTTP servers send deflate raw body (without zlib headers) instead of actual deflate body. See discussion at: Why do real-world servers prefer gzip over deflate encoding? Is it possible to detect them and handle inflate properly in Node.js? I mean besides try to createInflate them and catch error then try createInflateRaw again. 回答1: If the first byte in hex has a low nybble of 8 , then it is a zlib stream. Otherwise it is a raw deflate stream. (Assuming that you know a priori that the
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