extraction

How to extract all multi-volume RAR archives from subfolders of a folder?

由 大城市里の小女人 提交于 2020-01-03 02:12:51
问题 I search for a way to unpack multi-volume archives after download via batch. I download folders with .r?? files in it over a FTP monitoring program and want that WinRAR goes in the first subfolder in the source folder and start unpacking .r00, delete the archive and move the folder with the unpacked files to a new location. Then the batch script should start this process again with the next subfolder. Let's say the source folder C:\Users\unpack contains following subfolders with files: source

How do I list contents of a gzip file without extracting it in python?

由 拜拜、爱过 提交于 2019-12-31 04:39:06
问题 I've got a huge *.tar.gz file and I want to see the list of files contained in it without extracting the contents (preferably with mtimes per file). How can I achieve that in python? 回答1: You can use TarFile.getnames() like this: #!/usr/bin/env python3 import tarfile tarf = tarfile.open('foo.tar.gz', 'r:gz') print(tarf.getnames()) http://docs.python.org/3.3/library/tarfile.html#tarfile.TarFile.getnames And if you want mtime values you can use getmembers(). print([(member.name, member.mtime)

Extract all video frame from mp4 video using OpenCV and C++

由 ⅰ亾dé卋堺 提交于 2019-12-31 00:45:08
问题 I'm following a tutorial to extract video frames. I've read this question, it doesn't work, also queationfrom Open CV Answer, but the solution is for capturing current frame. I have a 120fps video and want to extract all of them. Here's my code #include <opencv2/core/core.hpp> #include <opencv2/highgui/highgui.hpp> #include <opencv2/imgproc/imgproc.hpp> #include <iostream> #include <string> #include <sstream> using namespace cv; using namespace std; int c = 0; string int2str(int &); int main

how to extract text outside tags xml

由 一笑奈何 提交于 2019-12-30 20:38:10
问题 I want to extract text outside tags. For example, <body> This is an exmaple <p> blablabla </p> <references> refer 1 refer 2 </references> </body> I want to get the text "This is an example" only without text in other tags (p or reference). I tried several methods but does not work. Any1 can help? Big thanks. 回答1: You must think a text inside a tag like a node. A text node is retrieved using the test node text() . Example. Given: <body> This is an exmaple <p> blablabla <\p> <references> refer

How can I extract a resource into a file at runtime?

由 徘徊边缘 提交于 2019-12-30 08:04:48
问题 I want to distribute only a single .exe, however, at runtime I would like it to extract some embedded image resources to the users hard disk drive. Can I, and if so, how? 回答1: Use Delphi's TResourceStream. It's constructor will find and load the resource into memory, and it's SaveToFile method will do the disk write. Something similar to this should work: var ResStream: TResourceStream; begin ResStream := TResourceStream.Create(HInstance, 'YOURRESOURCENAME', RT_RCDATA); try ResStream.Position

how do i find a hash for a chunk of file without having to save the chunk in a separate file?

由 倾然丶 夕夏残阳落幕 提交于 2019-12-25 07:26:57
问题 I want to find a hash for a chunk of file and save that hash in another file. I want to do it directly without having to save the chunk in a separate file.. here is my program. Const chunksize = 1024000000 dim istream,ostream Sub WriteChunk(data) Set oStream = CreateObject("ADODB.Stream") oStream.Open oStream.Type = 1 oStream.Write data Dim WshShell, oExec, input,objfile2,str1 Set WshShell = CreateObject("WScript.Shell") Set oExec = WshShell.exec("C:\Users\Administrator\desktop\experimenting

How to get text data from help pages in R?

由 若如初见. 提交于 2019-12-25 03:28:21
问题 Globally, I'm interested in getting all text data from R documentations to put them in data frames and apply text mining techniques. PACKAGE LEVEL: Suppose I'm interested in a package, for instance "utils" and I want to get all text data in a vector. This works: package_d <- packageDescription("utils") package_d$Description But not this : package_d$Details FUNCTIONS LEVEL : Same problem but for the functions. I tried this without success: function_d <- ?utils::adist function_d$Description SUB

How to get text data from help pages in R?

由 旧巷老猫 提交于 2019-12-25 03:28:01
问题 Globally, I'm interested in getting all text data from R documentations to put them in data frames and apply text mining techniques. PACKAGE LEVEL: Suppose I'm interested in a package, for instance "utils" and I want to get all text data in a vector. This works: package_d <- packageDescription("utils") package_d$Description But not this : package_d$Details FUNCTIONS LEVEL : Same problem but for the functions. I tried this without success: function_d <- ?utils::adist function_d$Description SUB

Extracting text in a specific region of PDF page using ICEpdf

由 亡梦爱人 提交于 2019-12-24 07:06:52
问题 Is there any way to extract the text of a specific region using ICEpdf? I was able to extract whole pages, but that's not what I want to do. (I know PDFBox nicely extracts the text in a specific rectangular area of a page. However, since the image rendering works a lot better in ICEpdf, I'd like to use that library.) 回答1: ON the Page object that represents a page you can call the method: PageText pageText = document.getPageText(pagNumber); Similar to the bundle example ./examples/extraction

Extract LSB bit from a Byte in python

由 て烟熏妆下的殇ゞ 提交于 2019-12-24 05:04:21
问题 I have a byte in variable 'DATA'. I want to extract the LSB bit out of it and print it. I'm very new to python, I found many articles with complex bitwise addition logic and all which was very tough to understand. I'm looking for a simple logic like we do with the strings eg DATA[7:1] Please help me out... 回答1: Is your "byte" an int ? If so, just take bitwise AND ( & ) with 1 (or, if you want to be more explicit, the binary literal 0b1 ) to get the least significant bit. >>> x = 14 >>> x & 1
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