C (gcc) code for copying with progress bar (cp clone)

[honeybear]

Hello,

I would like to know whether it has been released a C (gcc) code for copying with progress bar (cp clone). In the book of Dennis, there is one example that does CP. A progress might be not so complicated to be made.

Would you eventually know a code?

Kind regards

[Tony Flury]

Hello,

I would like to know whether it has been released a C (gcc) code for copying with progress bar (cp clone). In the book of Dennis, there is one example that does CP. A progress might be not so complicated to be made.

Would you eventually know a code?

Kind regards

This raises all sorts of questions :

1) Which graphical framework (GTK, TK, KBE etc etc).
2) You do know that gcc is just a compiler, which is very different from C which is a language.
3) Is this home work ?

[Warren Hill]

This raises all sorts of questions :

1) Which graphical framework (GTK, TK, KBE etc etc).
2) You do know that gcc is just a compiler, which is very different from C which is a language.
3) Is this home work ?

If its a simple Command line app then you could calculate what percentage of the file you have downloaded in a loop and print something, '*' example, for every 5% of the download.

Simple enough?

I won't give the code but it should give you enough of clue to work it out.

If its not home work then we need to know which graphical framework.

[jwbrase]

It's not an exact cp clone, but there is a program called pv in the repositories that can be inserted into a pipeline to display a progress bar on the terminal.

[MG&TL]

So...if there's an example in the "book of Dennis", then why not learn from /rip off that one?

[honeybear]

Ah guys, so much replies, and so much no content for some.

Surely a console based cp way, since cp is nothing else than cp:

whereis cp


A simple possible starting point is here. So there are many ways to make cool cp looking with a great progress bar.

Simply that's probably not the right place, forum, public,... about C coding maybe...

I wanted to exchange about some possible codes. well

#include <stdio.h>
#include <assert.h>
#include <stdlib.h>

#define MAXLINE 10 // in the book this is 1000

void copy(char to[], char from[])
{
    int i;

    i = 0;
    while((to[i] = from[i]) != '\0')
        ++i;
}

int main(int argc, char *argv[])
{
    int i;

    // use heap memory as many modern systems do
    char *line = malloc(MAXLINE);
    char *longest = malloc(MAXLINE);

    assert(line != NULL && longest != NULL && "memory error");

    // initialize it but make a classic "off by one" error
    for(i = 0; i < MAXLINE; i++) {
        line[i] = 'a';
    }

    // cause the defect
    copy(longest, line);

    free(line);
    free(longest);

    return 0;
}

with another layer with sthg similar to such as this:

#include <stdio.h>

int  main(void)
{

char *tu="*";
int i;

for(i=0;i<=100;i++) {

        printf("[%s %d", tu,i); printf("\r");

        fflush(stdout);

        usleep(1000);
        }
}

[honeybear]

A C code with a progress bar is a thing which is very easy to make. Since 80s it must exsits, but google does not pop it up. In 50 lines, one can make a void. I will do one in few weeks for you guys.

[conradin]

The cp command had a progress bar. I used to see it on some fedora 3 computers I had ages ago.
it was a little animation formatted with == signs and pipes and slashes.

it would kinda look like this, and the number of = sings would progress over time / copy percentage.
I haven't seen it in modern versions but i assumed its just an option that I had set up in older linux versions.

my understanding of scripting is that things like animations detract from my computer doing what I asked it to do.

#!/bin/bash
for i in `seq 0 10`
do 
	clear
	echo "=--"
	sleep 0.3
	clear
	echo "=/"
	sleep 0.3
	clear
	echo "=|"
	sleep 0.3
	clear
	echo "=\""

done

[sudodus]

It's not an exact cp clone, but there is a program called pv in the repositories that can be inserted into a pipeline to display a progress bar on the terminal.

+1

pv is doing this

copy

pv < bigfile.orig > bigfile.copy

compress

pv < bigfile.orig | gzip > bigfile.copy.gz

But this is simpler than cp (not managing wild cards or preserving permissions like cp -p etc)

[honeybear]

+1

pv is doing this

copy

pv < bigfile.orig > bigfile.copy

compress

pv < bigfile.orig | gzip > bigfile.copy.gz

But this is simpler than cp (not managing wild cards or preserving permissions like cp -p etc)

I dont like pv that much. It is kinda hacky and not so much reliable.

I have no time to make it, but soon or later, I will release a new CP with this progress bar. I need only 3-4 hours, but I cannot find it.

(oh, I forgot, I code under C mostly. So it will be in C)