file-io

Read a file until a character in C

Say I have a file with the format: key1/value1 key2/value2 key3/value3 .... Say I have an array to hold these values: char *data[10][10] How would I read this file and get key1, key2, and key3 into data[0][0], data[1][0], and data[2][0]. Then put value1, value2, and value3 into data[0][1], data[2][1], and data[3][1]. So actually I ...

Getting Error When Opening Files

I'm developing a simple Text Editor to understand better PocketC language, then I've done this: #include "\\Storage Card\\My Documents\\PocketC\\Parrot\\defines.pc" int filehandle; int file_len; string file_mode; initComponents() { createctrl("EDIT", "test", 2, 1, 0, 24, 70, 25, TEXTBOX); wndshow(TEXTBOX, SW_SHOW); guigetf...

EDIT Control Showing Squares Instead Of Returns

I'm playing a little bit with PocketC by doing a simple text editor. But with this code to read and to display the contents of the file on the EDIT control: int filehandle; int file_len; string file_mode; initComponents() { createctrl("EDIT", "test", 2, 1, 0, 24, 70, 25, TEXTBOX); wndshow(TEXTBOX, SW_SHOW); guigetfocus(); }...

Ruby: Is there a better way to iterate over multiple (big) files?

Here's what I'm doing (sorry for the variable names, I'm not using those in my code): File.open("out_file_1.txt", "w") do |out_1| File.open("out_file_2.txt", "w") do |out_2| File.open_and_process("in_file_1.txt", "r") do |in_1| File.open_and_process("in_file_2.txt", "r") do |in_2| while line_1 = in_1.gets do ...

What should be the ideal number of parallel java threads for copying a large set of files from a quad core ubuntu linux box to an external shared folder?

What should be the ideal number of parallel java threads for copying a large set of files from a quad core linux box to an external shared folder? I can see that with a single thread it is taking a hell lot of time to move the files one by one. Multiple threads is improving the copy performance, but I don't know what should be the exact ...

Performance of fopen vs stat

Hello, I'm writing several C programs for an embedded system where every bit of performance we can squeeze out will matter. Part of that is accessing log files. When determining if a file exists, is there any performance difference between using open / fopen, and stat ? I've been using stat on the assumption that it only has to do a q...

Reading Resource Files from my own APK in Android Native Environment

I'm porting to Android. My existing project has a ton of resource files that I'm porting into my Android project. I have them all in /res/raw/, and I would like to access those resources in my native library with functions such as fopen() and such. Can this be done, or do I have to go through JNI for this as well? I would really pref...

What are cons on reading a file which already used for streaming to writing?

Wondering if one file is open for writing in and another programe is accessing it recursively in tcl. ...

How to get all files under a specific directory in MATLAB?

I need to get all those files under D:\dic and loop over them to further process individually. Does MATLAB support this kind of operations? It can be done in other scripts like PHP,Python... ...

in c shell, how to open a file that contains a single digit

I need to open a file using c shell. The file contains a single integer, and I need to put it into a variable, increase it and put back into the file. Meaning, if the file contains the number 5, I need, after the program runs, that the file contains the number 6. Any suggestions? ...

Javascript - why do I sometimes fail to read file content with GDownloadUrl?

Hi everybody. I try to read some file with google's GDownloadUrl and it works only from time to time. failure means fileRows == "blah blah" success means fileRows == (real file content) I've noticed, however, that when I cease (with Firebug) the execution on line 3 for a couple of seconds, it succeeds more often. Maybe it is some kin...

How can I delete a file created and opened with Perl's IO::File and XML::Writer?

So I'm running through a list of things and have code that creates an .xml files with IO::File called $doc, then I make a new writer with XML::Writer(OUTPUT => $doc). More code runs and I build a big XML file with XML::Writer. Then, near the end of the file, I find out if I need this file at all. If I do need it, I just: $writer->end()...

C Remove the first line from a text file without rewriting file

Hi, I've got a service which runs all the time and also keeps a log file. It basically adds new lines to the log file every few seconds. I'm written a small file which reads these lines and then parses them to various actions. The question I have is how can I delete the lines which I have already parsed from the log file without disrupt...

read chars from a file - c#

How to read from a file array of numbers? I mean, how to read chars from a file? sorry for bad eng. upd: yes, i can :) just: "1 2 3 4 5 6 7 8" and etc. I just do not know how to read chars from a file. ...

Error in a C code while trying to remove whitespace

this code is the base of lexer , and it does the basic operation of removing the whitespaces from a source file and rewrites it into another file with each word in separate lines . But i am not able to understand why the file lext.txt not getting updated? #include<stdio.h> /* this is a lexer which recognizes constants , variables ,sym...

Elegant way to take basename of directory in Python?

I have several scripts that take as input a directory name, and my program creates files in those directories. Sometimes I want to take the basename of a directory given to the program and use it to make various files in the directory. For example, # directory name given by user via command-line output_dir = "..." # obtained by OptPars...

Parse values from a text file in C

Possible Duplicate: Parsing text in C Say I have written to a text file in this format: key1/value1 key2/value2 akey/withavalue anotherkey/withanothervalue I have a linked list like: struct Node { char *key; char *value; struct Node *next; }; to hold the values. How would I read key1 and value1? I was thinkin...

Is it possible to open a pipe-based filehandle which prints to a variable in perl?

Hi, I know I can do this, ------ open(F,">",\$var); print F "something cool"; close(F); print $var; ------ or this, open(F, "| ./prog1 | ./prog2 > tmp.file"); print F "something cool"; close(F); but is it possible to combine these? The semantics of what I'd like to do should be clear from the following, open(F,"|./prog...

C# Multithreading File IO (Reading)

We have a situation where our application needs to process a series of files and rather than perform this function synchronously, we would like to employ multi-threading to have the workload split amongst different threads. Each item of work is: 1. Open a file for read only 2. Process the data in the file 3. Write the processed data to ...

Get license file from a folder in C# project

I have a license file that I need to access at runtime in order to create pdf-files. After I have created the in memory pdf, I need to call a method on that pdf to set the license, like this: pdf.SetLicense("pathToLicenseFileHere"); The license file is located in the same project as the.cs-file that creates the pdf, but is in a separa...