From: =?UTF-8?q?S=C3=B6ren=20Tempel?= <soeren+git@soeren-tempel.net>
To: alpine-devel@lists.alpinelinux.org
Subject: [alpine-devel] [PATCH 1/2] abuild: support cloning form multiple git/svn urls
Date: Wed, 13 Jul 2016 16:02:26 +0200
Message-Id: <20160713140227.12362-1-soeren+git@soeren-tempel.net>
Precedence: list

Instead of having multiple variables for different version control
systems ($svnurl and $giturl) this unites all version control systems in
one URL $vcsurls and also allows you to add more than one URL per
APKBUILD.

The syntax is as follows:

	(git|svn)+<url>[#<revision to checkout (previously $reporev)>]

This has various advantages over the old approach: The obvious one being
that you can clone multiple repositories without defining your own
snapshot function now. I needed this for the testing/android-tools
APKBUILD. Additionally it is now much easier to add support for more
version control systems (e.g. mercurial).

The new code should be fully mostly[1] with APKBUILDs that are still
using $giturl, $svnurl and/or $reporev. However, this backwards
compatibility makes the code somewhat uglier and should probably be
removed in a feature version (deprecation warnings are already emitted
in this version).

In general the snapshot function code could be cleaned up a bit by
moving the git/svn clone code to a separate function et cetera.

[1] Since the previous snapshot code assumed that only one repository
would be cloned the tarballs contained a directory called
'$pkgname-${verbase:-0}_git${_date}', however since we have multiple
tarballs now we can't use this as a filename thus you need to update
"$builddir" after creating a new snapshot for your APKBUILD. Besides
stuff *will* break if you used command line flags in $giturl as
instructed in the comment above the snapshot function.
---
 abuild.in | 127 ++++++++++++++++++++++++++++++++++++++++----------------------
 1 file changed, 82 insertions(+), 45 deletions(-)

diff --git a/abuild.in b/abuild.in
index d4614d1..a0637c9 100644
--- a/abuild.in
+++ b/abuild.in
@@ -2057,61 +2057,98 @@ all() {
 	fi
 }
 
-# This abuild hook will checkout an svn or git repository by specifying
-# $svnurl or $giturl in APKBUILD. You can checkout a specific branch in
-# git by adding -b $branch in $giturl. $reporev will select the correct
-# commit, revision or tag for you. If you specify $disturl your distfile
-# will automatically be uploaded with rsync to the url provided.
+# This abuild hook will checkout a version control source tree.
+# Currently svn and git are supported. To checkout a repository
+# add the repository to the $vcsurls variable. The syntax for $vcsurls
+# items is the following:
+#
+#	(git|svn)+<url>[#<revision to checkout (previously $reporev)>]
+#
+# Revision to checkout is optional but recommended. If you specify $disturl
+# your distfile will automatically be uploaded with rsync to the url provided.
 # Base version defaults to 0 except if specified by $verbase.
 
 snapshot() {
+	# included for compatiblity with old APKBUILDs
+	[ -n "$svnurl" ] && [ -n "$giturl" ] && die "You can only use a single repository!"
+	if [ -n "$svnurl" ]; then
+		warning "The \$svnurl variable is deprecated, use \$vcsurls instead."
+		vcsurls="svn+$svnurl${reporev:+#$reporev}"
+	elif [ -n "$giturl" ]; then
+		warning "The \$giturl variable is deprecated, use \$vcsurls instead."
+		vcsurls="git+$giturl${reporev:+#$reporev}"
+	fi
+
 	# check if we setup vars correctly
 	[ -z "$disturl" ] && warning "Missing disturl in APKBUILD, auto uploading disabled."
-	[ -z "$svnurl" ] && [ -z "$giturl" ] && die "Missding repository url in APKBUILD!"
-	[ -n "$svnurl" ] && [ -n "$giturl" ] && die "You can only use a single repository!"
+	[ -z "$vcsurls" ] && die "Missing repository url in APKBUILD!"
+	[ -n "$reporev" ] && warning "The \$reporev variable is deprecated."
+	
 	local _date=$(date +%Y%m%d)
 	local _format="tar.gz"
 	# remove any repositories left in srcdir
 	abuild clean
 	mkdir -p "$srcdir" && cd "$srcdir"
-	# clone git repo and archive
-	if [ -n "$giturl" ]; then
-		local _version=${verbase:-0}_git${_date}
-		command -v git >/dev/null || \
-			die "Missing git! Install git to support git clone."
-		local _rev="${reporev:-HEAD}"
-		[ "$_rev" = "HEAD" ] && local _depth="--depth=1"
-		msg "Creating git snapshot: $pkgname-$_version"
-		git clone $_depth --bare $giturl $pkgname-$_version || return 1
-		git --git-dir $pkgname-$_version archive \
-			--format=$_format \
-			-o $pkgname-$_version.$_format \
-			--prefix=$pkgname-$_version/ $_rev \
-			|| return 1
-	fi
-	# export svn repo and archive
-	if [ -n "$svnurl" ]; then
-		local _version=${verbase:-0}_svn${_date}
-		command -v svn >/dev/null || \
-			die "Missing svn! Install subverion to support svn export."
-		[ -n "$reporev" ] && local _rev="-r $reporev"
-		msg "Creating svn snapshot: $pkgname-$_version"
-		svn co $_rev $svnurl $pkgname-$_version || return 1
-		tar zcf $pkgname-$_version.$_format $pkgname-$_version || return 1
-	fi
-	# upload to defined distfiles url
-	if [ -n "$disturl" ]; then
-		command -v rsync >/dev/null || \
-			die "Missing rsync! Install rsync to enable automatic uploads."
-		msg "Uploading to $disturl"
-		rsync --progress -La $pkgname-$_version.$_format \
-			$disturl || return 1
-		cd "$startdir"
-		# set the pkgver to current date and update checksum
-		sed -i -e "s/^pkgver=.*/pkgver=${_version}/" \
-			APKBUILD || return 1
-		abuild checksum
-	fi
+
+	local scr= ver= url= rver= type=
+	for url in $vcsurls; do
+		echo "$url" | grep -q + 2>/dev/null || \
+			die "VCS type for '$url' wasn't specified."
+		type="${url%+*}"
+		url="${url##*+}"
+
+		ver="${url##*\#}"
+		url="${url%\#*}"
+
+		[ -z "${ver}" ] && warning "Please specify a revision to checkout for '$url'."
+
+		case "$type" in
+		svn)
+			rver=${verbase:-0}_svn${_date}
+			scr="$pkgname-${url##*/}-$rver"
+
+			command -v svn >/dev/null || \
+				die "Missing svn! Install subverion to support svn export."
+
+			[ -n "$ver" ] && local _rev="-r $ver"
+			msg "Creating svn snapshot: $scr"
+			svn co $_rev "$url" $scr || return 1
+			tar zcf $scr.$_format $scr || return 1
+			;;
+		git)
+			rver=${verbase:-0}_git${_date}
+			scr="$pkgname-${url##*/}-$rver"
+
+			command -v git >/dev/null || \
+				die "Missing git! Install git to support git clone."
+
+			local _rev="${ver:-HEAD}"
+			[ "$_rev" = "HEAD" ] && local _depth="--depth=1"
+			msg "Creating git snapshot: $scr"
+			git clone $_depth --bare "$url" $scr || return 1
+			git --git-dir $scr archive \
+				-o $scr.$_format \
+				--format=$_format \
+				--prefix=$pkgname-$rver/ $_rev \
+				|| return 1
+			;;
+		*)  die "Unsupported VCS type: '${type}'" ;;
+		esac
+
+		# upload to defined distfiles url
+		if [ -n "$disturl" ]; then
+			command -v rsync >/dev/null || \
+				die "Missing rsync! Install rsync to enable automatic uploads."
+			msg "Uploading to $disturl"
+			rsync --progress -La $scr $disturl || return 1
+		fi
+	done
+
+	cd "$startdir"
+	# set the pkgver to current date and update checksum
+	sed -i -e "s/^pkgver=.*/pkgver=${rver}/" \
+		APKBUILD || return 1
+	abuild checksum
 }
 
 usage() {
-- 
2.9.0



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