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+# Copyright 1999-2006 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: $
+
+## --------------------------------------------------------------------------- #
+# Author: Akinori Hattori <hattya@gentoo.org>
+#
+# The subversion eclass is written to fetch the software sources from
+# subversion repositories like the cvs eclass.
+#
+#
+# Description:
+#   If you use this eclass, the ${S} is ${WORKDIR}/${P}.
+#   It is necessary to define the ESVN_REPO_URI variable at least.
+#
+## --------------------------------------------------------------------------- #
+
+inherit eutils
+
+ESVN="subversion.eclass"
+
+EXPORT_FUNCTIONS src_unpack
+
+HOMEPAGE="http://subversion.tigris.org/"
+DESCRIPTION="Based on the ${ECLASS} eclass"
+
+
+## -- add subversion in DEPEND
+#
+DEPEND="dev-util/subversion"
+
+
+## -- ESVN_STORE_DIR:  subversion sources store directory
+#
+ESVN_STORE_DIR="${PORTAGE_ACTUAL_DISTDIR-${DISTDIR}}/svn-src"
+
+
+## -- ESVN_FETCH_CMD:  subversion fetch command
+#
+ESVN_FETCH_CMD="svn checkout"
+
+## -- ESVN_UPDATE_CMD:  subversion update command
+#
+ESVN_UPDATE_CMD="svn update"
+
+
+## -- ESVN_OPTIONS:
+#
+# the options passed to checkout or update.
+#
+: ESVN_OPTIONS=${ESVN_OPTIONS:=}
+
+
+## -- ESVN_REPO_URI:  repository uri
+#
+# e.g. http://foo/trunk, svn://bar/trunk
+#
+# supported protocols:
+#   http://
+#   https://
+#   svn://
+#   svn+ssh://
+#
+: ESVN_REPO_URI=${ESVN_REPO_URI:=}
+
+
+## -- ESVN_PROJECT:  project name of your ebuild (= name space)
+#
+# subversion eclass will check out the subversion repository like:
+#
+#   ${ESVN_STORE_DIR}/${ESVN_PROJECT}/${ESVN_REPO_URI##*/}
+#
+# so if you define ESVN_REPO_URI as http://svn.collab.net/repo/svn/trunk or
+# http://svn.collab.net/repo/svn/trunk/. and PN is subversion-svn.
+# it will check out like:
+#
+#   ${ESVN_STORE_DIR}/subversion/trunk
+#
+# this is not used in order to declare the name of the upstream project.
+# so that you can declare this like:
+#
+#   # jakarta commons-loggin
+#   ESVN_PROJECT=commons/logging
+#
+# default: ${PN/-svn}.
+#
+: ESVN_PROJECT=${ESVN_PROJECT:=${PN/-svn}}
+
+
+## -- ESVN_BOOTSTRAP:
+#
+# bootstrap script or command like autogen.sh or etc..
+#
+: ESVN_BOOTSTRAP=${ESVN_BOOTSTRAP:=}
+
+
+## -- ESVN_PATCHES:
+#
+# subversion eclass can apply pathces in subversion_bootstrap().
+# you can use regexp in this valiable like *.diff or *.patch or etc.
+# NOTE: this patches will apply before eval ESVN_BOOTSTRAP.
+#
+# the process of applying the patch is:
+#   1. just epatch it, if the patch exists in the path.
+#   2. scan it under FILESDIR and epatch it, if the patch exists in FILESDIR.
+#   3. die.
+#
+: ESVN_PATCHES=${ESVN_PATCHES:=}
+
+
+## -- ESVN_RESTRICT:
+#
+# this should be a space delimited list of subversion eclass features to
+# restrict.
+#   export)
+#     don't export the working copy to S.
+#
+: ESVN_RESTRICT=${ESVN_RESTRICT:=}
+
+
+## -- subversion_fetch() ----------------------------------------------------- #
+#
+# @param $1 - a repository URI. default is the ESVN_REPO_URI.
+#
+function subversion_fetch() {
+
+	local repo_uri="$(subversion__get_repository_uri "${@}")"
+
+	# check for the protocol
+	local protocol="${repo_uri%%:*}"
+
+	case "${protocol}" in
+		http|https)
+			if built_with_use dev-util/subversion nowebdav; then
+				echo
+				eerror "In order to emerge this package, you need to"
+				eerror "re-emerge subversion with USE=-nowebdav"
+				echo
+				die "${ESVN}: please run 'USE=-nowebdav emerge subversion'"
+			fi
+			;;
+		svn|svn+ssh)
+			;;
+		*)
+			die "${ESVN}: fetch from "${protocol}" is not yet implemented."
+			;;
+	esac
+
+	# every time
+	addread "/etc/subversion"
+	addwrite "${ESVN_STORE_DIR}"
+
+	if [[ ! -d "${ESVN_STORE_DIR}" ]]; then
+		debug-print "${FUNCNAME}: initial checkout. creating subversion directory"
+		mkdir -p "${ESVN_STORE_DIR}" || die "${ESVN}: can't mkdir ${ESVN_STORE_DIR}."
+	fi
+
+	cd "${ESVN_STORE_DIR}" || die "${ESVN}: can't chdir to ${ESVN_STORE_DIR}"
+
+	local wc_path="$(subversion__get_wc_path "${repo_url}")"
+	local options="${ESVN_OPTIONS} --config-dir ${ESVN_STORE_DIR}/.subversion"
+
+	debug-print "${FUNCNAME}: ESVN_OPTIONS = \"${ESVN_OPTIONS}\""
+	debug-print "${FUNCNAME}: options = \"${options}\""
+
+	if [[ ! -d "${wc_path}/.svn" ]]; then
+		# first check out
+		einfo "subversion check out start -->"
+		einfo "     repository: ${repo_uri}"
+
+		debug-print "${FUNCNAME}: ${ESVN_FETCH_CMD} ${options} ${repo_uri}"
+
+		mkdir -p "${ESVN_PROJECT}" || die "${ESVN}: can't mkdir ${ESVN_PROJECT}."
+		cd "${ESVN_PROJECT}" || die "${ESVN}: can't chdir to ${ESVN_PROJECT}"
+		${ESVN_FETCH_CMD} ${options} "${repo_uri}" || die "${ESVN}: can't fetch from ${repo_uri}."
+
+	else
+		subversion_wc_info "${repo_uri}" || die "${ESVN}: unknown problem occurred while accessing working copy."
+
+		if [ "${ESVN_WC_URL}" != "$(subversion__get_repository_uri "${repo_uri}" 1)" ]; then
+			die "${ESVN}: ESVN_REPO_URI (or specified URI) and working copy's URL are not matched."
+		fi
+
+		# update working copy
+		einfo "subversion update start -->"
+		einfo "     repository: ${repo_uri}"
+
+		debug-print "${FUNCNAME}: ${ESVN_UPDATE_CMD} ${options}"
+
+		cd "${wc_path}" || die "${ESVN}: can't chdir to ${wc_path}"
+		${ESVN_UPDATE_CMD} ${options} || die "${ESVN}: can't update from ${repo_uri}."
+
+	fi
+
+	einfo "   working copy: ${wc_path}"
+
+	if ! has "export" ${ESVN_RESTRICT}; then
+		cd "${wc_path}" || die "${ESVN}: can't chdir to ${wc_path}"
+
+		# export to the ${WORKDIR}
+		#*  "svn export" has a bug.  see http://bugs.gentoo.org/119236
+		#* svn export . "${S}" || die "${ESVN}: can't export to ${S}."
+		rsync -rlpgo --exclude=".svn/" . "${S}" || die "${ESVN}: can't export to ${S}."
+	fi
+
+	echo
+
+}
+
+
+## -- subversion_bootstrap() ------------------------------------------------ #
+#
+function subversion_bootstrap() {
+
+	if has "export" ${ESVN_RESTRICT}; then
+		return
+	fi
+
+	cd "${S}"
+
+	if [[ -n "${ESVN_PATCHES}" ]]; then
+		einfo "apply patches -->"
+
+		local p=
+
+		for p in ${ESVN_PATCHES}; do
+			if [[ -f "${p}" ]]; then
+				epatch "${p}"
+
+			else
+				local q=
+
+				for q in ${FILESDIR}/${p}; do
+					if [[ -f "${q}" ]]; then
+						epatch "${q}"
+
+					else
+						die "${ESVN}; ${p} is not found"
+
+					fi
+				done
+			fi
+		done
+
+		echo
+
+	fi
+
+	if [[ -n "${ESVN_BOOTSTRAP}" ]]; then
+		einfo "begin bootstrap -->"
+
+		if [[ -f "${ESVN_BOOTSTRAP}" && -x "${ESVN_BOOTSTRAP}" ]]; then
+			einfo "   bootstrap with a file: ${ESVN_BOOTSTRAP}"
+			eval "./${ESVN_BOOTSTRAP}" || die "${ESVN}: can't execute ESVN_BOOTSTRAP."
+
+		else
+			einfo "   bootstrap with commands: ${ESVN_BOOTSTRAP}"
+			eval "${ESVN_BOOTSTRAP}" || die "${ESVN}: can't eval ESVN_BOOTSTRAP."
+
+		fi
+	fi
+
+}
+
+
+## -- subversion_src_unpack() ------------------------------------------------ #
+#
+function subversion_src_unpack() {
+
+	subversion_fetch     || die "${ESVN}: unknown problem occurred in subversion_fetch."
+	subversion_bootstrap || die "${ESVN}: unknown problem occurred in subversion_bootstrap."
+
+}
+
+
+## -- subversion_wc_info() --------------------------------------------------- #
+#
+# @param $1 - repository URI. default is ESVN_REPO_URI.
+#
+function subversion_wc_info() {
+
+	local repo_uri="$(subversion__get_repository_uri "${@}")"
+	local wc_path="$(subversion__get_wc_path "${repo_uri}")"
+
+	if [[ ! -e "${wc_path}" ]]; then
+		return 1
+	fi
+
+	local k
+
+	for k in url revision; do
+		export ESVN_WC_$(echo "${k}" | tr [a-z] [A-Z])="$(subversion__svn_info "${wc_path}" "${k}")"
+	done
+
+}
+
+
+## -- Private Functions
+
+
+## -- subversion__svn_info() ------------------------------------------------- #
+#
+# @param $1 - a target.
+# @param $2 - a key name.
+#
+function subversion__svn_info() {
+
+	local target="${1}"
+	local key="${2}"
+
+	env LC_ALL=C svn info "${target}" | grep -i "^${key}" | cut -d" " -f2-
+
+}
+
+
+## -- subversion__get_repository_uri() --------------------------------------- #
+#
+# @param $1 - a repository URI.
+# @param $2 - a peg revision is deleted from a return value if this is
+#             specified.
+#
+function subversion__get_repository_uri() {
+
+	local repo_uri="${1:-${ESVN_REPO_URI}}"
+	local remove_peg_revision="${2}"
+
+	debug-print "${FUNCNAME}: repo_uri = ${repo_uri}"
+	debug-print "${FUNCNAME}: remove_peg_revision = ${remove_peg_revision}"
+
+	if [[ -z "${repo_uri}" ]]; then
+		die "${ESVN}: ESVN_REPO_URI (or specified URI) is empty."
+	fi
+
+	# delete trailing slash
+	if [[ -z "${repo_uri##*/}" ]]; then
+		repo_uri="${repo_uri%/}"
+	fi
+
+	if [[ -n "${remove_peg_revision}" ]]; then
+		if subversion__has_peg_revision "${repo_uri}"; then
+			repo_uri="${repo_uri%@*}"
+
+			debug-print "${FUNCNAME}: repo_uri has a peg revision"
+			debug-print "${FUNCNAME}: repo_uri = ${repo_uri}"
+		fi
+	fi
+
+	echo "${repo_uri}"
+
+}
+
+
+## -- subversion__get_wc_path() ---------------------------------------------- #
+#
+# @param $1 - a repository URI.
+#
+function subversion__get_wc_path() {
+
+	local repo_uri="$(subversion__get_repository_uri "${1}" 1)"
+
+	debug-print "${FUNCNAME}: repo_uri = ${repo_uri}"
+
+	echo "${ESVN_STORE_DIR}/${ESVN_PROJECT}/${repo_uri##*/}"
+
+}
+
+
+## -- subversion__has_peg_revision() ----------------------------------------- #
+#
+# @param $1 - a repository URI.
+#
+function subversion__has_peg_revision() {
+
+	local repo_uri="${1}"
+
+	debug-print "${FUNCNAME}: repo_uri = ${repo_uri}"
+
+	# repo_uri has peg revision ?
+	if [[ "${repo_uri}" != *@* ]]; then
+		debug-print "${FUNCNAME}: repo_uri does not have a peg revision."
+		return 1
+	fi
+
+	local peg_rev="${repo_uri##*@}"
+	local rev=$(subversion__svn_info "${repo_uri}" "revision")
+
+	debug-print "${FUNCNAME}: peg_rev = ${peg_rev}"
+	debug-print "${FUNCNAME}: rev = ${rev} "
+
+	if [[ "${peg_rev}" -eq "${rev}" ]]; then
+		return 0
+	fi
+
+	return 1
+
+}
+
+
+# $Id$