shithub: git9

ref: 72621d62735fefe8bbcbf7308f6f271abe9c8f37
dir: /clone/

#!/bin/rc -e

rfork en
nl='
'

remote=$1
local=$2

if(~ $#remote 0){
	echo usage: $0 'remote [local]' >[1=2]
	exit usage
}
if(~ $#local 0)
	local=`{basename $remote .git}

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 $3 > outfile
				close(outfile)
			}
		}
		END{
			if(headref != ""){
				remote = headref
				gsub("^refs/remotes/origin", "refs/heads", headref)
				system("mkdir -p `{basename -d .git/" headref"}");
				system("cp .git/" remote " .git/" headref)
				print "ref: " headref > ".git/HEAD"
			}else if(headhash != ""){
				print "warning: detached head "headhash > "/fd/2"
				print headhash > ".git/HEAD"
			}
		}
	'} |[3] tr '\x0d' '\x0a'
	x=$status
	if(! ~ $x '|')
		exit $0:^' '^$"x

	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 $tree && tar cif /fd/1 .} | @ {tar xf /fd/0}
		x=$status
		if(! ~ $x '')
			exit 'checkout: '^$"x
		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