Turning Midnight Commander into a console browser for GIT

Instead of the preface ...

I have long wanted to see the code about how it was done in meld, but only in the console, and I also wanted it all to be linked to the GIT file version control system. In general, everything is done with 1 button without leaving mc.

Ydiff

Once, on our channel (or it was on the truck ...), someone named Daniel Borca made a little more noise and ran away, apparently didn’t like our bureaucracy, but he left behind him a few raw patches for the upcoming release 4.7.0-pre1 midnight commander. One of them contained ydiff. [Ch] and zdiff. [Ch] ... As it turned out, what I wanted to get was already implemented in the ancient fork mc-mp and in the latest version of ru-fork . After a 2-day "sawing", I connected the file comparison function to the latest version of mc ... There was one done. :)

View GIT repository

Gitfs panel plugin

The second problem was that I would like to view patches from the GIT repository directly to the midnight commander, directly from the repository directory. And I thought about writing a VFS for midnight commander with the help of which it would be possible to navigate the repository in the right panel. A few minutes later, “picking” was born the first raw version of gitfs
The current fully working but not final version is presented below:

#! / bin / sh

LANG = C
umask 077
')
gitfs_list ( )
{
DATE = ` date + "% b% d% H:% M " `
GIT_DIR = "$ 2 / .git"
user = ` whoami`
git ls-files | while read fname
do
echo "-r - r - r-- 1 $ user 0 0 $ DATE` dirname $ fname` / (git) `basename $ fname` "
done
}

gitfs_copyout ( )
{

echo -e "$ 2" > "$ 4"
echo "$ 3" | sed -e s / \ ( git \ ) \ // >> "$ 4"
}

case "$ 1" in
list ) gitfs_list "$ @" ;;
copyout ) gitfs_copyout "$ @" ;;
* ) exit 1 ;;
esac
exit 0

Gitlogfs panel plugin

I wanted to not only navigate the repository, but also be able to receive files of any revision. For this plugin gitlogfs was written

#! / bin / sh

LANG = C

changesetfs_list ( )
{
DATE = ` date + "% b% d% H:% M " `
GIT_DIR = ` head -n1 $ 2` ".git"
fname = ` tail -n1 $ 2`
USER = ` whoami`
git log --abbrev = 7 --pretty = "format:% at% h% an" " $ fname " | while read chset
do
TIMESTAMP = ` echo $ chset | cut -f1 -d "" `
DATE = ` date -d @ " $ TIMESTAMP " + "% b% d% H:% M " `
NAME = ` echo $ chset | cut -f2 -d "" ` " " ` basename $ fname `
echo "-rw-rw-rw- 1 $ USER 0 0 $ DATE $ NAME "
done

}

changesetfs_copyout ( )
{
GIT_DIR = ` head -n1 $ 2` ".git"
fname = ` tail -n1 $ 2`
chset = ` echo " $ 3 " | cut -f 1 -d "" `
filecommit = ` git show --raw --pretty = tformat: % h " $ chset " " $ fname " | grep ^: | grep ... | cut -f3 -d "" | cut -f1 -d "." `
git show " $ filecommit " > "$ 4"
}

case "$ 1" in
list ) changesetfs_list "$ @" ; exit 0 ;;
copyout ) changesetfs_copyout "$ @" ; exit 0 ;;
esac
exit 1

Connecting gitfs and gitlogfs plugins to a midnight commander

In order for any panel plugins to connect to mc, it’s enough to put them in the home directory of the midnight commander ~ / .mc / extfs.d . In order for the gitlogfs plugin to be called when you click on any file starting with the prefix (git), you need to add a description of this file type in the file ~ / .mc / bindings , like this: