shithub: git9

ref: 6888b49d4ee35b2adb09679b784f56174b18af58
dir: /clone/

#!/bin/rc

rfork en
nl='
'

if(~ $#* 1){
	remote=$1
	local=`{basename $1 .git}
}
if not if(~ $#* 2){
	remote=$1
	local=$2
}
if not{
	echo usage: git/clone remote [local] >[1=2]
	exit usage
}

if(test -e $local){
	echo $local already exists >[1=2]
	exit exists
}
	
fn clone{
	mkdir -p $local/.git
	mkdir -p $local/.git/objects/pack/
	mkdir -p $local/.git/refs/heads/
	
	cd $local
	
	dircp /sys/lib/git/template .git
	echo '[remote "origin"]' 				>> .git/config
	echo '	url='$remote					>> .git/config
	echo '	fetch=+refs/heads/*:refs/remotes/origin/*'	>> .git/config
	{git/fetch $remote >[2=3] | awk '
		/^remote/{
			if($2=="HEAD"){
				headhash=$3
				headref=""
			}else{
				gsub("^refs/heads", "refs/remotes/origin", $2)
				if($2 == "refs/remotes/origin/master" || $3 == headhash)
					headref=$2
				outfile = ".git/" $2
				system("mkdir -p `{basename -d "outfile"}")
				print $3 > outfile
				close(outfile)
			}
		}
		END{
			if(headref != ""){
				remote = headref
				gsub("^refs/remotes/origin", "refs/heads", headref)
				system("mkdir -p `{basename -d .git/" headref"}");
				system("cp .git/" remote " .git/" headref)
				print "ref: " headref > ".git/HEAD"
			}else if(headhash != ""){
				print "warning: detached head "headhash > "/fd/2"
				print headhash > ".git/HEAD"
			}
		}
	'} |[3] tr '\x0d' '\x0a'
	if(! ~ $status '|')
		exit 'clone:'^$status

	tree=/mnt/git/branch/heads/master/tree
	echo checking out repository...
	if(test -f .git/refs/remotes/origin/master){
		cp .git/refs/remotes/origin/master .git/refs/heads/master
		git/fs
		@ {builtin cd $tree && tar cif /fd/1 .} | @ {tar xf /fd/0}
		if(! ~ $status '')
			exit 'checkout:' $status
		for(f in `$nl{walk -f $tree | sed 's@^'$tree'/*@@'}){
			if(! ~ $#f 0){
				idx=.git/index9/tracked/$f
				mkdir -p `{basename -d $idx}
				walk -eq $f > $idx
			}
		}
	}
	if not{
		echo no master branch >[1=2]
		echo check out your code with git/branch >[1=2]
	}
}

@{clone}
st=$status
if(~ $st ''){
	echo done.
}
if not{
	echo clone failed. >[2=1]
	echo cleaning up $local >[2=1]
	rm -rf $local
}