shithub: git9

ref: 1d3bf83f2d4bce528bcf2d4e50c27390de355557
dir: /import/

#!/bin/rc
rfork ne
. /sys/lib/git/common.rc

usage='
	git/import [file ...]
'

fn apply @{
	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
		die '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 == "")
			exit("missing headers");
		printf "%s", name > "/env/name"
		printf "%s", email > "/env/email"
		printf "%s", msg > "/env/msg"
		printf "%s", date > "/env/date"
	}
	' || die 'could not import:' $status

	# force re-reading env
	rc -c '
		echo applying $msg | sed 1q
		date=`{seconds $date}
		files=`$nl{ape/patch -p1 < $diffpath | sed ''s/^patching file `(.*)''''/\1/''}
		for(f in $files){
			if(test -e $f)
				git/add $f
			if not
				git/add -r $f
		}
		git/walk -fRMA
		hash=`{git/save -n $name -e $email -m $msg -d $date $parents $files}
		echo $hash > $refpath
	'
}

gitup

patches=(/fd/0)
if(! ~ $#* 0)
	patches=$*
for(f in $patches)
	apply < $f || die $status