Development of a custom binary file type? So far all I know is the just the basic structures of the binary file type, I know that structures are involved but the implementation part I have run into walls.
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How do you write your own Filesystem/Format?
I've always wanted to know how to write my own system for the learning experience. I've worked on simple ones that read from a flatfile of a defined size, but never one that was on a fully formatted drive.
Where do I start? Are there any examples/tutorials?
I am getting a weird error "The specified file is an unrecognized or unsupported binary format"
I have this >
#include <iostream>
#include "calculator.h"
using namespace std;
int calculator::getDisplay() {
return display;
} void calculator::enter(int nu
[code]......
I cannot write as binary using .dat format in ubuntu, why?
View 5 Replies View RelatedI want to read a Bitmap file in C language and produce the binary equivalent of it in the form of 0's and 1's.
View 1 Replies View RelatedI am trying to write down in binary format an array of unsigned int values but i get the following compilation error :
: In function ‘int CIndex(std::fstream&, std::fstream&, std::fstream&, std::fstream&)’:
./src/IndexBuilder/index.cpp:23:26: error: no matching function for call to ‘std::basic_fstream<char>::write(int*, long unsigned int)’
./src/IndexBuilder/index.cpp:23:26: note: candidate is:
/usr/include/c++/4.6/bits/ostream.tcc:184:5: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::write(const _CharT*, std::streamsize) [with _CharT = char, _Traits = std::char_traits<char>, std::streamsize = long int]
This is the part the is not working:
Code:
// uia is : unsigned int * uia;
// then I have allocated the space for it
// load it with unsigned int's
// k is the number of variables in my array
o.write(uia,sizeof(unsigned int)*k); But thsi should be so simple and strait forward.... in c i do it as :
Code:
fwrite(uia, sizeof(unsigned int), k , fp); but since i would need to convert fstream to FILE* i decided to do it c++ way.
and this is how i opened the file :
Code:
o.open (fileName.c_str(),std::ios::out|std::ios::binary);
I am coding in C++ an implementation of BTree Insertion. I want to display the contents of the Tree in a per-level format. After writing functions and trying to run. I get the error Undefined reference.
// C++ program for B-Tree insertion
#include<iostream>
using namespace std;
// A BTree node
class BTreeNode{
int *keys; // An array of keys
int order; // Minimum degree (defines the range for number of keys)
BTreeNode **child; // An array of child pointers
int size; // Current number of keys
[Code] .....
Following is the program I wrote it basically takes 9 inputs and then save them into binary file. then print out the data stored in binary data and find inverse of it then print the inverse out. but its stuck in a loop somewhere.
Code:
#include <stdio.h>
int main() {
int a[3][3],i,j;
float determinant=0;
int x;
FILE *fp = fopen ("file.bin", "wb");
[Code] .....
I have almost a hundred names in a text file that I want to convert to email addresses and save to another file. I seem to have it working, but it doesn't print the full names in the email prefix. The output I'm looking for is Doe_John@livebrandm, but I'm only getting D_J@livebrandm. I'm not sure what I should specifically be reading up on that applies to this directly.
Code:
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
FILE *fpin=fopen("namesIN.txt", "r");
FILE *fpout=fopen("emailOUT.txt", "a");
char first[20],last[20],inbuff[1500];
[Code]...
I am creating small application using c#.net.I removed all image tag using regular expression no I want to remove all video file and flash file also in source code of webpage.
so far I have tried this ...
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
[Code] .....
So this may be against the rules, not sure, grey area probably? However I just bought the PC game Oil Rush, and was having a look at how the assets are packed. As with most games the textures, scripts, sounds and audio are all free to access.
However the game data such as maps, models and other, are packed into UNG files, i.e a custom encrypted file format, which probably is also compressed. So I googled for an unpacker/extracter and found one which also comes with the C source. You can download here. [URL] ....
So I am trying to figure out how these authors work out this file format, from the source we have,
Code:
static const u8 unigine_mask[] = "xffx7fx3fx1fx0fx07x03x01";
u32 unigine_key = 0xa13cdbde;
Looks like a password of sorts. You then have to work out the complete understanding of the file formats, headers, blocks etc.. How is this done...
I am trying to make a custom hotkey on my program via a ini file.
Code:
TCHAR KeyValue[32];
GetPrivateProfileString(("test"), ("test"), ("") ,KeyValue, 32, ("C: est.ini"));
if(GetAsyncKeyState (KeyValue)) // Hotkeys 0x60 VK_NUMPAD0 //Problem here
{
}
Code:
test.ini :
[test]
test=0x60
Error:
invalid conversion from `CHAR*' to `int'
initializing argument 1 of `SHORT GetAsyncKeyState(int)'
I have installed VS 2010 and VS 2012. VS 2012 uses SqlServer CE 3.5 and VS 2012 uses SqlServer CE 4.0.The problem is that when a project uses a 3.5 file it tries to open it with 4.0 even if the app.config says to use the 3.5 provider. The version of the assembly is pulled right out of the GAC. I uninstalled 4.0 and the reference auto updated its version to 3.5.1. However after installing 4.0 again it changes to 4.0. The error I am getting is that 4.0 cannot open a 3.5 file....they changed the file format from 3.5 to 4.0 and they are not compatible.
View 2 Replies View RelatedThe requirement is to capture statistics of uuid occurrences for ALIVE/SEARCH/BYEBYE (it can be all 3, combinations of 2 each, or one alone) in a dynamically populated file in run time.
I am able to print all 3 combinations, but not in combination of 1 or 2 e.g.
If my input.txt is like this :
uuid:22314754-a597-490b-8a93-02cfae01036b ALIVE 16
uuid:22314754-a597-490b-8a93-02cfae01036b BYEBYE 8
uuid:22314754-a597-490b-8a93-02cfae01036b SEARCH 8
uuid:50e65653-7525-485d-83bf-d293558c4264 ALIVE 32
uuid:50e65653-7525-485d-83bf-d293558c4264 BYEBYE 8
uuid:50e65653-7525-485d-83bf-d293558c4264 SEARCH 132
[Code]...
Code:
#include<stdio.h>
#include<string.h>
struct uid
{
char uid_val[100];
char state[100];
int temp_count;
int alive_count;
int search_count;
[Code]...
Gives the following output ->output.txt)
Device ID ALIVE BYEBYE SEARCH
uuid:22314754-a597-490b-8a93-02cfae01036b 16 8 8
uuid:50e65653-7525-485d-83bf-d293558c4264 32 8 132
uuid:55076f6e-6b79-4d65-6497-180373763bc1 113 112 111
uuid:T0100203354 1 2 3
I want to generalize the code such that uuid occurrence does not have to be all 3 (ALIVE/SEARCH/BYEBYE), the occurrences can be any combination and code should work. e.g my code gives wrong results when input.txt contains the following:
uuid:22314754-a597-490b-8a93-02cfae01036b BYEBYE 8
uuid:22314754-a597-490b-8a93-02cfae01036b SEARCH 8
uuid:50e65653-7525-485d-83bf-d293558c4264 ALIVE 32
uuid:50e65653-7525-485d-83bf-d293558c4264 BYEBYE 8
uuid:55076f6e-6b79-4d65-6497-180373763bc1 ALIVE 113
uuid:55076f6e-6b79-4d65-6497-180373763bc1 BYEBYE 112
uuid:55076f6e-6b79-4d65-6497-180373763bc1 SEARCH 111
uuid:T0100203354 BYEBYE 2
I am using ubuntu for gcc/g+ compiler.
I'm using Visual Studio Express 2013 to create a Windows program that will upgrade my micro-controller firmware. I have a .exe program to upgrade it. What I normally do is I drag and drop a .txt file on the .exe program and it will be done. I want to write a program that will do the exact same thing. Where when I click on a button, it will run the .exe program with the .txt file.
What I got so far is just run the .exe program when i press the button. I do not know how to write a code to let the .exe start with the .txt file. Here's what I got so far.
Process.Start(@"C:UsersJayDocumentsVisual Studio 2013ProjectsWindowsFormsApplication1BSL_FilesBSL ScripterBSL_Scripter.exe");
That line only manage to open up my .exe file. How do I make it run with the .txt at this location?
C:UsersJayDesktopBSL_FilesBSLSCRIPT.txt
I have a multivalued function (created in some other software Mathematica) that looks like f[8.7,5.4]=4.8+8.7*I. In other words it's a complex valued function of two variables. I store the output of this function over a range of parameters in a text file that looks like:
Code:
f[1,2]=9.8+8.7I;
f[4,5]=5.6-5.21I;
.
.
I could store it differently if that is easier, but essentially I just want some c++ code to read this in and store it, either in a vector type structure or Dictionary? (I don't think a double array will work as I don't know how long list of data is in advance).
I’m developing an application where I have some defines, like:
#define PatientName “(0x0010, 0x0010)”
#define PatientId “(0x0010, 0x0020)”
#define Modality “(0x0010, 0x0030)”
And a few more (up to 3000). These defines are used to read certain fields from a DICOM image, that give information about that image (Patient Name, etc…). However I don’t wish to read all these fields. Instead I’m trying to load an .ini configuration which will configure which fields to read. For example:
[PROPERTIES]
# Fields to read
fields=PatienId,Modality
This would only retrieve the Patient Name and a Modality.
The problem is, the values I retrieve from the .ini file (reading and parsing the file with std::fstream) come as a string. How could I retrieve, for example, the defined value from PatientId, i.e. “(0x0010, 0x0020)”? Something like std::cout << # << "PatientId"; won't work.
I am trying to automatically(periodically) print screen a custom area of the screen, save it as an image file (the image will have the same format always), and then use OCR to get the text in the image as usable string variables. Is this doable? I was looking into tesseract OCR but I find it a bit unclear.
View 10 Replies View Relateda few pointers in building an assembler in C for a 68hc11 micro controller I'm struggling on a way to convert the assembly language in a txt file to s19 format.
View 1 Replies View RelatedMy objective is to create a file and save some text in it. But the twist is that file should be created in pdf format.
I have written following code:
Code:
#include<stdio.h>
Code:
int main() { FILE *fp;
char ch;
fp=fopen("file.pdf","w");
fprintf(fp, "%PDF-1.3"); //to initiate data storage in pdf file
printf(" Enter data to be stored in to the file:");
while((ch=getchar())!=EOF)
putc(ch,fp);
fclose(fp);
return 0;}
Now my file is created in pdf format, but when I open it by double click on it, it is not open and gives the message like: "Error in opening document. This file is damaged and could not be repaired."
Bit of a problem, I'm trying to output the data from my code into a particular format to a text file. The format is
y0 y1 y2 y3 y4 y5...yn
z0 0.01 0.2 1
z1 0.4 0 etc...
z2
z3
z4
z5
...
zn
Any pointers?
I have the below code, the first rich text box works fine but on the second i get the error
An unhandled exception of type 'System.ArgumentException' occurred in System.Windows.Forms.dll
Additional information: File format is not valid.
System.Windows.Forms.RichTextBox rtBox = new System.Windows.Forms.RichTextBox();
rtBox.Rtf = reader["Change_Description"] as string;
Change_Description = rtBox.Text;
System.Windows.Forms.RichTextBox rtBox2 = new System.Windows.Forms.RichTextBox();
rtBox2.Rtf = reader["Change_Justification"] as string;
Change_Justification = rtBox2.Text;
I wanna write a piece of code in C++ that extract the width and height of a image with bmp file format...
View 2 Replies View RelatedI am getting a message from the palysound function it says File format not recognized i have linked the the compiler (i.e. dev c++) to the sound.
#include <cstdlib>
#include <iostream>
#include <stdio.h>
#include <conio.h>
#include <windows.h>
using namespace std;
int main(int argc, char *argv[]) {
[code]....
I'm having trouble reading my data from a .txt file into a structure of the format shown in my code. I've made my student database in the program below based on user input and I didn't have a problem with that, but now it's come to input from a file it's making it difficult.
My three tasks are:
(1) A table containing 1 row per student, containing the student ID number and all of the student's marks.
(2) Another table, containing 1 row per student, containing the student ID number and the average mark obtained by that student.
(3) The average mark for each subject.
The assumptions to be made are: The student ID can begin with a zero, and should therefore be read in as a string.The test data will contain 20 students but the program should be able to deal with up to 100 students.Assume there are no more than 4 different subjects.
So based on the first assumption I've arranged the data in the file in an order in which the student ID begins with a zero:
003953 Computing 38
003953 English 88
003953 Mathematics 29
003953 Physics 83
073241 Computing 63
073241 English 99
073241 Mathematics 32
073241 Physics 73
...for twenty students, 80 lines of data. Now, on the assumption they must be read in as strings, this is what's making it tricky to store in the structure because, I've got 80 ID numbers but 20 repeat themselves 4 times. Once I've got this data in the structure below the tasks I won't have a problem with because I can just base it on a user input program but the data's already stored instead.
Below is my code for user input associated with task (1). In this example the IDs are stored as ints but for the file they will be strings. It compiles fine, displays the data as shown in the assignment sheet, but I don't know how to get the data into my structure. I can store the data in a structure of three arrays using fscanf() no problem, but it's not very "workable" for what I need to do with it.
Code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
[Code].....
I need to create a program which could create text files of the bits stored in avi file/binary file. My first requirement is to show 0s and 1s in the text representation . My second requirement is to create an avi file from this text file. I have tried few codings but either they give me error or they not playing the reconverted binary files.
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