gzip

Concatenate gzipped files with Python, on Windows

不想你离开。 提交于 2020-02-01 05:03:05
问题 Is there a memory-efficient way to concatenate gzipped files, using Python, on Windows, without decompressing them? According to a comment on this answer, it should be as simple as: cat file1.gz file2.gz file3.gz > allfiles.gz but how do I do this with Python, on Windows? 回答1: Just keep writing to the same file. with open(..., 'wb') as wfp: for fn in filenames: with open(fn, 'rb') as rfp: shutil.copyfileobj(rfp, wfp) 回答2: You don't need python to copy many files to one. You can use standard

Golang : Problem in converting xml to gzip

寵の児 提交于 2020-01-30 13:02:21
问题 I am working on a program that compresses xml files to gzip using golang. but the program failed to generate files, however it does generate the output when I try to convert .txt file to gzip . Here is my program:- package main import ( "bytes" "compress/gzip" "fmt" "io" "log" "os" ) type Notes struct { To string `xml:"to"` From string `xml:"from"` Heading string `xml:"heading"` Body string `xml:"body"` } func main() { var buf bytes.Buffer zw := gzip.NewWriter(&buf) // Setting the Header

How do you unzip a gz file in memory using GZipStream?

萝らか妹 提交于 2020-01-30 12:05:53
问题 I'm probably doing something obviously stupid here. Please point it out! I have some C# code that is pulling down a bunch of .gz files from SFTP (using the SSH.NET Nuget package - works great!). Each gz contains only a single .CSV file inside of them. I want to keep these files in memory without hitting disk (yes, I know, server memory management concerns exist - that's fine as these files are fairly small), decompress them in memory to extract the CSV file inside, and then return a

How do you unzip a gz file in memory using GZipStream?

做~自己de王妃 提交于 2020-01-30 12:04:22
问题 I'm probably doing something obviously stupid here. Please point it out! I have some C# code that is pulling down a bunch of .gz files from SFTP (using the SSH.NET Nuget package - works great!). Each gz contains only a single .CSV file inside of them. I want to keep these files in memory without hitting disk (yes, I know, server memory management concerns exist - that's fine as these files are fairly small), decompress them in memory to extract the CSV file inside, and then return a

Downloading files using GZIP

谁都会走 提交于 2020-01-30 06:46:28
问题 I have many XML-s and I downloaded using file or file_get_content, but the server administrator told me that through GZIP is more efficient the downloading. My question is how can I include GZIP, because I never did this before, so this solution is really new for me. 回答1: I don't understand your question. You say that you downloaded these files - you can't unilaterally enable compression client-side. OTOH you can control it server-side - and since you've flagged the question as PHP, and it

Python爬取小说(2)单章节爬取

房东的猫 提交于 2020-01-26 14:35:24
#coding = utf-8 #urlopen:打开网址 #Request:请求 from urllib.request import urlopen,Request #导入gzip包:解压gzip import gzip import ssl ssl._create_default_https_context = ssl._create_unverified_context() from lxml import etree path = "http://www.xbiquge.la/10/10489/4535761.html" headers = { 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.88 Safari/537.36', "Accept-Encoding": "gzip, deflate", "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9", "Accept

使用filter过滤GZIP压缩(二)

时光怂恿深爱的人放手 提交于 2020-01-26 03:47:44
在代码之前,讲一下用filter实现GZIP压缩的原理: 因为GZIP压缩之后,是从服务器端传输到浏览器端,从servlet到浏览器(从jsp到浏览器),其实是response带回内容,所以我们要 在filter中对从servlet端响应回来的response进行操作 ,因为写内容是response中的writer或者outputStream来完成的, 所以我们首先要把response中的writer或者outputStream中的内容取出来 , 这里我选择了writer进行操作(writer和outputStream其实皆可) ,但是问题又来了, response.getWriter.write();直接就写出了内容(因为response内部的writer其实是PrintWriter),定位输出到浏览器页面显示上了,并没有缓存起来,那么我们该怎么解决这个问题呢? 思路如下: 使用装饰者模式对response中的getWriter方法进行重写,以便提供一个带缓存的writer,让操作者得到的writer实际上write是定位在writer构造传入的缓存中的 (这个缓存可以使用我们之前讲的 ByteArrayOutputStream 或者 CharArrayWriter , 这类输出流的好处是,带有一个toByteArray和toCharArray的方法,可以直接获得流内部的内容发

如何通过优化网站提高网页打开速度

眉间皱痕 提交于 2020-01-25 21:52:31
网页打开速度慢的所造成的影响很重大的,因此站长对于网页打开速度的在意程度也是不断的在加重。但是站长不知道除了外部环境(带宽速度)会影响网页的打开速度之外,网站内部也是存在有影响因素的,不过站长可以通过优化从而提高网页的打开速度。所以香港葵芳IDC小编今天就为大家科普下,优化网页打开速度的内容有哪些。 ​ ​ 1、缩小Javascript和CSS文件 ​ ​ 如果你的网站大约有50-60%!的(MISSING)用户是第一次访客,那么这些人会下载Javascript和CSS,如果这些文件很大浏览器会下载很长时间。使用压缩工具可以减少Javascript和CSS尽一半的文件大小。同时,使用香港服务器时,我们要开启缓存机制,使用户首次访问时,将图片、CSS和Javascript在其浏览器缓存,这样他们下一次访问就特别快。Apache Web服务器,可以使用mod_cache模块开启缓存。 ​ ​ 2、减少HTTP请求 ​ ​ 葵芳IDC小编告诉你浏览器会花费80%!的(MISSING)时间获取外部元件,包括脚本、样式表、图像等,只有20%!的(MISSING)时间用来加载内容,每个网站都会有许多HTTP请求,由于只有2个HTTP请求可以在同一时间传送,所以请求一旦过多就会造成延迟。通过Yslow等网站性能评分工具可以查看你的网站HTTP请求数,可以看到JS、CSS和CSS引用的图片文件过多

How do I disable GZip with SetEnvIfNoCase in Apache .htaccess?

谁都会走 提交于 2020-01-25 12:03:38
问题 I want to disable GZip for certain pages. I have this in my .htaccess , but it still turns GZip on ( Content-Encoding: gzip ) when visiting dashboard/index . <ifmodule mod_deflate.c> AddOutputFilterByType DEFLATE text/text text/html text/plain text/xml text/css application/x-javascript application/javascript BrowserMatch ^Mozilla/4 gzip-only-text/html BrowserMatch ^Mozilla/4\.0[678] no-gzip BrowserMatch \bMSIE !no-gzip !gzip-only-text/html SetEnvIfNoCase Request_URI /dashboard/index no-gzip

How do I disable GZip with SetEnvIfNoCase in Apache .htaccess?

安稳与你 提交于 2020-01-25 12:02:45
问题 I want to disable GZip for certain pages. I have this in my .htaccess , but it still turns GZip on ( Content-Encoding: gzip ) when visiting dashboard/index . <ifmodule mod_deflate.c> AddOutputFilterByType DEFLATE text/text text/html text/plain text/xml text/css application/x-javascript application/javascript BrowserMatch ^Mozilla/4 gzip-only-text/html BrowserMatch ^Mozilla/4\.0[678] no-gzip BrowserMatch \bMSIE !no-gzip !gzip-only-text/html SetEnvIfNoCase Request_URI /dashboard/index no-gzip