binaryfiles | 易学教程

Is it possible to write an binary file import extension for vs code?

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问题 I want to display some informations of a binary file in vs code. Is it possible to write an extension for vs code, such that when selecting that file in the Explorer (or opening it directly) you see some text extracted from the binary file by that extension? So the core functionality of that extension would be (simplified) a binary to text converter. Any suggestions? 回答1: The VS Code team member has confirmed they do not have support for registering content providers for binary files in my

Why is the git index file binary?

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问题 Most of the files in my Git directory are plain text files (except for the compressed loose objects and the packfiles). So I can just cat and edit files like .git/HEAD or .git/refs/heads/master and inspect the repository if it gets corrupted. But the .git/index is a binary file. Wouldn't a plain text file be more useful because it can easily be modified by hand? Scott Chacon shows in his presentation the following image (Slide 278): In my opinion, this can easily be put to a plain text file.

How to display binary images from Database to edit form using MVC 4

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问题 I am storing images in Database as Binary Images successfully. I want to display these images in Edit form to modify and save changes. System.OutOfMemoryException' was thrown in Edit.cshtml form while displaying Binary Images from Database. Can someone please correct my code. Model class: public class Accommodation { [Key] public string A_Unique_Id { get; set; } public byte[] Picture1 { get; set; } public byte[] Picture2 { get; set; } public byte[] Picture3 { get; set; } } // GET:

How to read packed binary data in Go?

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问题 I'm trying to figure out the best way to read a packed binary file in Go that was produced by Python like the following: import struct f = open('tst.bin', 'wb') fmt = 'iih' #please note this is packed binary: 4byte int, 4byte int, 2byte int f.write(struct.pack(fmt,4, 185765, 1020)) f.write(struct.pack(fmt,4, 185765, 1022)) f.close() I have been tinkering with some of the examples I've seen on Github.com and a few other sources but I can't seem to get anything working correctly (update shows

Reading direct access binary file format in Python

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问题 Background: A binary file is read on a Linux machine using the following Fortran code: parameter(nx=720, ny=360, nday=365) c dimension tmax(nx,ny,nday),nmax(nx,ny,nday) dimension tmin(nx,ny,nday),nmin(nx,ny,nday) c open(10, &file='FILE', &access='direct',recl=nx*ny*4) c do k=1,nday read(10,rec=(k-1)*4+1)((tmax(i,j,k),i=1,nx),j=1,ny) read(10,rec=(k-1)*4+2)((nmax(i,j,k),i=1,nx),j=1,ny) read(10,rec=(k-1)*4+3)((tmin(i,j,k),i=1,nx),j=1,ny) read(10,rec=(k-1)*4+4)((nmin(i,j,k),i=1,nx),j=1,ny) end do

Full-text search on MongoDB GridFS?

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问题 Say, if I want to store PDFs or ePub files using MongoDB's GridFS, is it possible to perform full-text searching on the data files? 回答1: You can't currently do real full text search within mongo: http://www.mongodb.org/display/DOCS/Full+Text+Search+in+Mongo Feel free to vote for it here: https://jira.mongodb.org/browse/SERVER-380 Mongo is more of a general purpose scalable data store, and as of yet it doesn't have any full text search support. Depending on your use case, you could use the

Random Binary Read/Write in Python vs .NET

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I really like how .NET implements reading/writing of binary data to a file. Clean and elegant. Can I do this in Python? Sub Main() Using writer As New System.IO.BinaryWriter( _ System.IO.File.Open("Test.bin", IO.FileMode.Create)) writer.Write(True) writer.Write(123) writer.Write(123.456) writer.Write(987.654D) writer.Write("Test string.") End Using Using reader As New System.IO.BinaryReader( _ System.IO.File.Open("Test.bin", IO.FileMode.Open)) Console.WriteLine(reader.ReadBoolean()) Console.WriteLine(reader.ReadInt32()) Console.WriteLine(reader.ReadDouble()) Console.WriteLine(reader

how to parse binary files in Clojure

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问题 What is the cleanest way to parse binary data in clojure? I need to be able to read/write equally cleanly to a file or a socket. something like: (read-data source-of-data) => { :index 42 , :block-size 4 , data-size: 31415, :data (1 2 3 4 ...)} and the reverse for putting data back. It would be really great to somehow define the structure once and have the read and write functions use the same definition. 回答1: Gloss makes it easy to define binary formats at the byte level for both reading and

Python: ctypes hashable c_char array replacement without tripping over '\\0' bytes

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For illustration purposes, this script creates a file mapfile containing the content of the files, given as arguments, prepended by a binary header with a sha1 checksum, that allows for duplication detection on subsequent runs. What's needed here is a hashable ctypes.c_char replacement, that can hold sha1 checksums with minimum fuzz, but not choking on '\0' bytes. # -*- coding: utf8 -* import io import mmap import ctypes import hashlib import logging from collections import OrderedDict log = logging.getLogger(__file__) def align(size, alignment): """return size aligned to alignment""" excess =

Why are my `binaryFiles` empty when I collect them in pyspark?

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问题 I have two zip files on hdfs in the same folder : /user/path-to-folder-with-zips/ . I pass that to "binaryfiles" in pyspark: zips = sc.binaryFiles('/user/path-to-folder-with-zips/') I'm trying to unzip the zip files and do things to the text files in them, so I tried to just see what the content will be when I try to deal with the RDD. I did it like this: zips_collected = zips.collect() But, when I do that, it gives an empty list: >> zips_collected [] I know that the zips are not empty - they