shithub: git9

ref: 520c2250d56010bb2f8d36f005a2c0d14eb23cca
dir: /import/

#!/bin/rc

rfork ne

nl='
'
if(! cd `{git/conf -r})
	exit 'not in git repository'

fn die{
	echo $patchname: $1 $2
	exit $2
}

fn apply @{
	flag +e

	git/fs
	email=''
	name=''
	msg=''
	parents='-p'^`{git/query HEAD}
	diffpath=/tmp/gitimport.$pid.diff
	branch=`{awk '$1=="branch"{print $2}' < /mnt/git/ctl}
	if(test -e /mnt/git/branch/$branch/tree)
		refpath=.git/refs/$branch
	if not if(test -e /mnt/git/object/$branch/tree)
		refpath=.git/HEAD
	if not
		exit 'invalid branch '$branch
	awk '
	BEGIN{
		state="headers"
	}
	state=="headers" && /^From:/ {
		sub(/^From:*[ \t]*/, "", $0);
		name=$0;
		email=$0;
		sub(/<.*$/, "", name);
		sub(/.*</, "", email);
		sub(/>/, "", email);
	}
	state=="headers" && /^Date:/{
		sub(/^Date:[ \t]*/, "", $0)
		date=$0
	}
	state=="headers" && /^Subject:/{
		sub(/^Subject: (\[PATCH\])*[ \t]*/, "", $0);
		msg=msg $0 "\n"
	}
	state=="headers" && /^$/ {
		state="body"
	}
	(state=="headers" || state=="body") && (/^diff/ || /^---[ 	]*$/){
		state="diff"
		print > ENVIRON["diffpath"]
	}
	state=="body" {
		print > "/env/msg"
	}
	state=="diff" {
		print > ENVIRON["diffpath"]
	}
	END{
		if(state != "diff")
			exit("malformed patch: " state);
		if(name == "" || email == "" || msg == "" || date == ""){
			print "missing headers" > "/fd/2";
			exit("missingheader");
		}
		printf "%s", name > "/env/name"
		printf "%s", email > "/env/email"
		printf "%s", msg > "/env/msg"
		printf "%s", date > "/env/date"
	}
	'
	st=$status
	if(! ~ $st ''){
		echo could not import: $st >[1=2]
		exit badpatch
	}

	# force re-reading env
	rc -c '
		flag -e
		echo applying $msg | sed 1q
		date=`{seconds $date}
		ape/patch -p1 < $diffpath
		git/walk -fRMA
		hash=`{git/save -n $name -e $email -m $msg -d $date $parents}
		echo $hash > $refpath
	'
}

fn import{
	apply
	st=$status
	if(! ~ $st ''){
		echo stdin: $st
		exit $st
	}
}

patches=(/fd/0)
if(! ~ $#* 0)
	patches=$*
for(f in $patches)
	import < $f