ref: 733c5d6645b133b60d304c38fcb1398f94d0618c
dir: /sys/src/cmd/git/clone/
#!/bin/rc rfork en . /sys/lib/git/common.rc flagfmt='d:debug, b:branch branch'; args='remote [local]' eval `''{aux/getflags $*} || exec aux/usage if(~ $debug 1) debug=(-d) remote=`{echo $1 | sed 's@/*$@@'} local=$2 if(~ $#remote 0) exec aux/usage if(~ $#local 0) local=`{basename $remote .git} if(~ $#branch 1) branchflag=(-b $branch) if(test -e $local) die 'repository already exists:' $local fn clone{ flag +e mkdir -p $local/.git mkdir -p $local/.git/fs mkdir -p $local/.git/objects/pack/ mkdir -p $local/.git/refs/heads/ cd $local >>.git/config { echo '[remote "origin"]' echo ' url='$remote } {git/get $debug $branchflag $remote >[2=3] | awk ' BEGIN{ headref="" if(ENVIRON["branch"] != "") headref="refs/remotes/origin/"ENVIRON["branch"] headhash="" } /^symref / && headref == "" { if($2 == "HEAD"){ gsub("^refs/heads", "refs/remotes/origin", $3) gsub("^refs/tags", "refs/remotes/origin/tags", $3) } } /^remote /{ if($2=="HEAD"){ headhash=$3 }else if(match($2, "^refs/(heads|tags)/")){ gsub("^refs/heads", "refs/remotes/origin", $2) if($2 == headref || (headref == "" && $3 == headhash)) headref=$2 outfile = ".git/" $2 outdir = outfile gsub("/?[^/]*/?$", "", outdir) system("mkdir -p "outdir) print $3 > outfile close(outfile) } } END{ if(headref != ""){ remote = headref; refdir = headref; gsub("/?[^/]*/?$", "", refdir) 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' || die 'could not clone repository' tree=.git/fs/HEAD/tree lbranch=`{git/branch} rbranch=`{echo $lbranch | subst 'heads' 'remotes/origin'} echo checking out repository... if(test -f .git/refs/$rbranch){ mkdir -p `{basename -d .git/refs/$lbranch} cp .git/refs/$rbranch .git/refs/$lbranch git/fs @ {builtin cd $tree && tar cif /fd/1 .} | @ {tar xf /fd/0} \ || die 'checkout failed:' $status {for(f in `$nl{cd $tree && walk -f}) echo 'T NOQID 0 '$f} > .git/INDEX9 } if not{ echo no default branch >[1=2] echo check out your code with git/branch >[1=2] } } fn sigint { echo cancelled clone $remote: cleaning $local >[1=2] unmount $local/.git/fs >[2]/dev/null rm -rf $local exit interrupted } @{clone} st=$status if(! ~ $st ''){ echo failed to clone $remote: cleaning $local >[1=2] unmount $local/.git/fs >[2]/dev/null rm -rf $local exit $st } exit ''