Is there a function in the C Library under Linux which can set the length of a file? Under Windows I know there is a SetFileLength() function. If there is not, what is the best way of shortening a file without deleting and rewriting it? ...
I'm looking for some information and a little history. I am writing a program and I want to save some data without using a database. I'm assuming I could use XML but what else can I use? How do you save data to files and then retrieve them without XML and without plain text? What is Binary formatting, can that be used? Isn't binary forma...
I am developing an interface that takes as input an encrypted byte stream -- probably a very large one -- that generates output of more or less the same format. The input format is this: {N byte envelope} - encryption key IDs &c. {X byte encrypted body} The output format is the same. Here's the usual use case (heavily pseudocode...
Is there any way (in Javascript) to download a remote website (i.e. like with Curl), read it into a string variable and further process it? ...
Hi, I'm using the subprocess module to start a subprocess and connect to it's output stream (stdout). I want to be able to execute non-blocking reads on its stdout. Is there a way to make .readline non-bloking or to check if there is data on the stream before I invoke .readline? I'd like this to be portable or at least work under Window...
I'd like to use WMI on some windows systems to poll the network usage of each process. From what I can tell, there are many IO instances in the Win32_PerfRawData_PerfProc_Process but they are for the combined IO of network,disk,and device. Is there a way to break that up so I can get network and disk IO separate? ...
So I have this GIF file on my desktop (it's a 52 card deck of poker cards). I have been working on a program that cuts it up into little acm.graphics.GImages of each card. Now, however, I want to write those GImages or pixel arrays to a file so that I can use them later. I thought it would be as straight forward as writing .txt files, bu...
Here's the deal. My WinApp is running, right? in let's say process 'A'.It creates a file and keeps the handle (keeps the file open for writing, this is a must). Then it starts other msbuild process, let's call it 'B'. This process is started with the System.Diagnostic.Process class. At some point, my WinApp (A) needs to delete the pre...
I am trying to control some LEDs wired to the parallel port on Windows XP. The easiest solution would be Inpout32.dll from Logix4u.net. I have found many source code samples in various languages (C++, Visual Basic, C#) but nothing using Java. Do you know any tutorials about calling DLL functions from Java ? (what I have found so far on ...
How do I check if a file is already used by another process from Powerscript ? ...
Ok it turns out this 3rd party component I am working with stores an email attachment in a property of string type (it is already decoded). How would I store this to file now? It has: filename, encodingtype and the string representation of the file. ...
Is there a good way to get the process name that created a file in Windows? I have a directory on a Windows 2000 Server C:\WINNT\Temp that is filling up with files named like: 70618199 21834082 They are always 121,201 KB in size. Programatically can I "capture" the program name or service name that is dropping files in this locati...
I'm working with Quickbook's IIF file format and I need to write a parser to read and write IIF files and I'm running into some issues reading the files. The files are simple, they're tab deliminated. Every line is either a table definition or a row. Definitions begin with'!' and the table name, and rows begin with just the table name. ...
On a modern system can local harddisk write speeds be improved by compressing the output stream? This question derives from a case I'm working with where a program serially generates and dumps around 1-2GB of text logging data to a raw text file on the hard disk and I think it is IO bound. Would I expect to be able to decrease runtimes ...
Would anyone know what the Win32 equivalent of opendir is (or if it even exists) ? Obviously I could use FindFirstFile(Ex) with FindNextFile, but appending * to the path seems like such a hackish way to do it. ...
Hi, I need to search a drive (C:, D: etc) for a partuicular file type (extension like .xml, .csv, .xls). How do I preform a recursive search to loop all directories and inner directories and return the full path of where the file(s) are? or where can I get information on this? VB.NET or C# Thanks Edit ~ I am running into some errors ...
I have a computer (say computer A) whenever computer A gets a connection over a particular telnet port, it launches a program. this program on computer A handles login, authentication etc. One of the jobs it can do is receive files. It handles this by launching gKermit. /usr/local/bin/gkermit -e 8000 -w -a /location/x/ -ir I have a s...
I am trying to find out why Apache CXF is running away doing "something" upon first-time initialization of a web-service. "Something" is probably some kind of IO, and I'm guessing it's trying to resolve an external address/schema/DTD of some sort. So I'm trying to find some kind of hook where I can monitor all IO. Either at VM level or ...
Lets take a look at the code: #include <iostream> #include <fstream> #include <string> #include <cstdio> #include <cstdlib> using namespace std; int main() { string usrFileStr, fileStr = "airNames.txt", // declaring string literal sLine; // declaring a string obj fstream inFile; ...
Let's say I have a file called test.txt within the package "com.test.io" within my jar. How would I go about writing a class which retrieves this text file and then copies the contents to a new file on the file system? ...