compression

问题 What is an example (simple code) of how to zip a folder in C#? Update: I do not see namespace ICSharpCode . I downloaded ICSharpCode.SharpZipLib.dll but I do not know where to copy that DLL file. What do I need to do to see this namespace? And do you have link for that MSDN example for compress folder, because I read all MSDN but I couldn\'t find anything. OK, but I need next information. Where should I copy ICSharpCode.SharpZipLib.dll to see that namespace in Visual Studio? 回答1: This answer

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 8 years ago . Locked . This question and its answers are locked because the question is off-topic but has historical significance. It is not

问题 How can I create a .tar.gz file with compression in Python? 回答1: To build a .tar.gz (aka .tgz ) for an entire directory tree: import tarfile def make_tarfile(output_filename, source_dir): with tarfile.open(output_filename, "w:gz") as tar: tar.add(source_dir, arcname=os.path.basename(source_dir)) This will create a gzipped tar archive containing a single top-level folder with the same name and contents as source_dir . 回答2: import tarfile tar = tarfile.open("sample.tar.gz", "w:gz") for name in

问题 UPDATE Feb 10 2012: zOompf has completed some very thorough research on this very topic here. It trumps any findings below. UPDATE Sept 11 2010: A testing platform has been created for this here HTTP 1.1 definitions of GZIP and DEFLATE (zlib) for some background information: \" \'Gzip\' is the gzip format, and \'deflate\' is the zlib format . They should probably have called the second one \'zlib\' instead to avoid confusion with the raw deflate compressed data format. While the HTTP 1.1 RFC

问题 I had a somewhat lively discussion the other day about minifying Javascript and CSS versus someone who prefers using Gzip. I\'ll call this person X. X said that Gzip allready minifies the code, since it zips your files. I disagree. Zip is a lossless method of shrinking filesize. Lossless means the original must be restored perfectly, meaning info must be stored to be able to restore the spaces, the un-needed characters, commented code and everything else. That takes up more space, since more

问题 Really stuck on trying to write code to unzip a file or directory on the iPhone. Below is some sample code that I\'m using to try and unzip a simple text file. It unzips the file but its corrupt. (void)loadView { NSString *DOCUMENTS_FOLDER = [NSHomeDirectory() stringByAppendingPathComponent:@\"Documents\"]; NSString *path = [DOCUMENTS_FOLDER stringByAppendingPathComponent:@\"sample.zip\"]; NSString *unzipeddest = [DOCUMENTS_FOLDER stringByAppendingPathComponent:@\"test.txt\"]; gzFile file =

问题 What is the the best JavaScript compressor available? I\'m looking for a tool that: is easy to use has a high compression rate Produce reliable end results (doesn\'t mess up the code) 回答1: I recently released UglifyJS, a JavaScript compressor which is written in JavaScript (runs on the NodeJS Node.js platform, but it can be easily modified to run on any JavaScript engine, since it doesn't need any Node.js internals). It's a lot faster than both YUI Compressor and Google Closure, it compresses

问题 The compression algorithm used in zlib is essentially the same as that in gzip and zip . What are gzip and zip ? How are they different and how are they same? 回答1: Short form: .zip is an archive format using, usually, the Deflate compression method. The .gz gzip format is for single files, also using the Deflate compression method. Often gzip is used in combination with tar to make a compressed archive format, .tar.gz . The zlib library provides Deflate compression and decompression code for

问题 How can I create 7-Zip archives from my C# console application? I need to be able to extract the archives using the regular, widely available 7-Zip program. Here are my results with the examples provided as answers to this question \"Shelling out\" to 7z.exe - this is the simplest and most effective approach, and I can confirm that it works nicely . As workmad3 mentions, I just need to guarantee that 7z.exe is installed on all target machines, which is something I can guarantee. 7Zip in

问题 Is there a compression API available for use on the iPhone? We\'re building some RESTful web services for our iPhone app to talk to, but we want to compress at least some of the conversations for efficiency. I don\'t care what the format (ZIP, LHA, whatever) is, and it does not need to be secure. Some respondents have pointed out that the server can compress its output, and the iPhone can consume that. The scenario we have is exactly the reverse. We\'ll be POSTing compressed content to the