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-# Copyright 1999-2012 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License v2
-# $Header: /var/cvsroot/gentoo-x86/eclass/bzr.eclass,v 1.18 2012/07/18 15:12:54 ulm Exp $
-#
-# @ECLASS: bzr.eclass
-# @MAINTAINER:
-# Emacs team <emacs@gentoo.org>
-# Bazaar team <bazaar@gentoo.org>
-# @AUTHOR:
-# Jorge Manuel B. S. Vicetto <jmbsvicetto@gentoo.org>
-# Mark Lee <bzr-gentoo-overlay@lazymalevolence.com>
-# Ulrich Müller <ulm@gentoo.org>
-# Christian Faulhammer <fauli@gentoo.org>
-# @BLURB: generic fetching functions for the Bazaar VCS
-# @DESCRIPTION:
-# The bzr.eclass provides functions to fetch, unpack, patch, and
-# bootstrap sources from repositories of the Bazaar distributed version
-# control system.  The eclass was originally derived from git.eclass.
-#
-# Note: Just set EBZR_REPO_URI to the URI of the branch and src_unpack()
-# of this eclass will export the branch to ${WORKDIR}/${P}.
-
-inherit eutils
-
-EBZR="bzr.eclass"
-
-case "${EAPI:-0}" in
-	0|1) EXPORT_FUNCTIONS src_unpack ;;
-	*)   EXPORT_FUNCTIONS src_unpack src_prepare ;;
-esac
-
-DEPEND=">=dev-vcs/bzr-2.0.1"
-case "${EAPI:-0}" in
-	0|1) ;;
-	*) [[ ${EBZR_REPO_URI%%:*} = sftp ]] \
-		&& DEPEND=">=dev-vcs/bzr-2.0.1[sftp]" ;;
-esac
-
-# @ECLASS-VARIABLE: EBZR_STORE_DIR
-# @DESCRIPTION:
-# The directory to store all fetched Bazaar live sources.
-: ${EBZR_STORE_DIR:=${PORTAGE_ACTUAL_DISTDIR:-${DISTDIR}}/bzr-src}
-
-# @ECLASS-VARIABLE: EBZR_INIT_REPO_CMD
-# @DESCRIPTION:
-# The Bazaar command to initialise a shared repository.
-: ${EBZR_INIT_REPO_CMD:="bzr init-repository --no-trees"}
-
-# @ECLASS-VARIABLE: EBZR_FETCH_CMD
-# @DESCRIPTION:
-# The Bazaar command to fetch the sources.
-: ${EBZR_FETCH_CMD:="bzr branch --no-tree"}
-
-# @ECLASS-VARIABLE: EBZR_UPDATE_CMD
-# @DESCRIPTION:
-# The Bazaar command to update the sources.
-: ${EBZR_UPDATE_CMD:="bzr pull"}
-
-# @ECLASS-VARIABLE: EBZR_EXPORT_CMD
-# @DESCRIPTION:
-# The Bazaar command to export a branch.
-: ${EBZR_EXPORT_CMD:="bzr export"}
-
-# @ECLASS-VARIABLE: EBZR_CHECKOUT_CMD
-# @DESCRIPTION:
-# The Bazaar command to checkout a branch.
-: ${EBZR_CHECKOUT_CMD:="bzr checkout --lightweight -q"}
-
-# @ECLASS-VARIABLE: EBZR_REVNO_CMD
-# @DESCRIPTION:
-# The Bazaar command to list a revision number of the branch.
-: ${EBZR_REVNO_CMD:="bzr revno"}
-
-# @ECLASS-VARIABLE: EBZR_OPTIONS
-# @DEFAULT_UNSET
-# @DESCRIPTION:
-# The options passed to the fetch and update commands.
-
-# @ECLASS-VARIABLE: EBZR_REPO_URI
-# @DEFAULT_UNSET
-# @REQUIRED
-# @DESCRIPTION:
-# The repository URI for the source package.
-#
-# Note: If the ebuild uses an sftp:// URI, then in EAPI 0 or 1 it must
-# make sure that dev-vcs/bzr was built with USE="sftp".  In EAPI 2 or
-# later, the eclass will depend on dev-vcs/bzr[sftp].
-
-# @ECLASS-VARIABLE: EBZR_INITIAL_URI
-# @DEFAULT_UNSET
-# @DESCRIPTION:
-# The URI used for initial branching of the source repository.  If this
-# variable is set, the initial branch will be cloned from the location
-# specified, followed by a pull from ${EBZR_REPO_URI}.  This is intended
-# for special cases, e.g. when download from the original repository is
-# slow, but a fast mirror exists but may be out of date.
-#
-# Normally, this variable needs not be set.
-
-# @ECLASS-VARIABLE: EBZR_BOOTSTRAP
-# @DEFAULT_UNSET
-# @DESCRIPTION:
-# Bootstrap script or command like autogen.sh or etc.
-
-# @ECLASS-VARIABLE: EBZR_PATCHES
-# @DEFAULT_UNSET
-# @DESCRIPTION:
-# bzr.eclass can apply patches in bzr_bootstrap().  You can use regular
-# expressions in this variable like *.diff or *.patch and the like.
-# Note: These patches will be applied before EBZR_BOOTSTRAP is processed.
-#
-# Patches are searched both in ${PWD} and ${FILESDIR}.  If not found in
-# either location, the installation dies.
-
-# @ECLASS-VARIABLE: EBZR_PROJECT
-# @DESCRIPTION:
-# The project name of your ebuild.  Normally, the branch will be stored
-# in the ${EBZR_STORE_DIR}/${EBZR_PROJECT} directory.
-#
-# If EBZR_BRANCH is set (see below), then a shared repository will be
-# created in that directory, and the branch will be located in
-# ${EBZR_STORE_DIR}/${EBZR_PROJECT}/${EBZR_BRANCH}.
-: ${EBZR_PROJECT:=${PN}}
-
-# @ECLASS-VARIABLE: EBZR_BRANCH
-# @DEFAULT_UNSET
-# @DESCRIPTION:
-# The directory where to store the branch within a shared repository,
-# relative to ${EBZR_STORE_DIR}/${EBZR_PROJECT}.
-#
-# This variable should be set if there are several live ebuilds for
-# different branches of the same upstream project.  The branches can
-# then share the same repository in EBZR_PROJECT, which will save both
-# data traffic volume and disk space.
-#
-# If there is only a live ebuild for one single branch, EBZR_BRANCH
-# needs not be set.  In this case, the branch will be stored in a
-# stand-alone repository directly in EBZR_PROJECT.
-
-# @ECLASS-VARIABLE: EBZR_REVISION
-# @DEFAULT_UNSET
-# @DESCRIPTION:
-# Revision to fetch, defaults to the latest
-# (see http://bazaar-vcs.org/BzrRevisionSpec or bzr help revisionspec).
-
-# @ECLASS-VARIABLE: EBZR_OFFLINE
-# @DESCRIPTION:
-# Set this variable to a non-empty value to disable automatic updating
-# of a bzr source tree.  This is intended to be set outside the ebuild
-# by users.
-: ${EBZR_OFFLINE=${EVCS_OFFLINE}}
-
-# @ECLASS-VARIABLE: EBZR_WORKDIR_CHECKOUT
-# @DEFAULT_UNSET
-# @DESCRIPTION:
-# If this variable is set to a non-empty value, EBZR_CHECKOUT_CMD will
-# be used instead of EBZR_EXPORT_CMD to copy the sources to WORKDIR.
-
-# @FUNCTION: bzr_initial_fetch
-# @USAGE: <repository URI> <branch directory>
-# @DESCRIPTION:
-# Internal function, retrieves the source code from a repository for the
-# first time, using ${EBZR_FETCH_CMD}.
-bzr_initial_fetch() {
-	local repo_uri=$1 branch_dir=$2
-
-	if [[ -n "${EBZR_OFFLINE}" ]]; then
-		ewarn "EBZR_OFFLINE cannot be used when there is no local branch yet."
-	fi
-
-	# fetch branch
-	einfo "bzr branch start -->"
-	einfo "   repository: ${repo_uri} => ${branch_dir}"
-
-	${EBZR_FETCH_CMD} ${EBZR_OPTIONS} "${repo_uri}" "${branch_dir}" \
-		|| die "${EBZR}: can't branch from ${repo_uri}"
-}
-
-# @FUNCTION: bzr_update
-# @USAGE: <repository URI> <branch directory>
-# @DESCRIPTION:
-# Internal function, updates the source code from a repository, using
-# ${EBZR_UPDATE_CMD}.
-bzr_update() {
-	local repo_uri=$1 branch_dir=$2
-
-	if [[ -n "${EBZR_OFFLINE}" ]]; then
-		einfo "skipping bzr pull -->"
-		einfo "   repository: ${repo_uri}"
-	else
-		# update branch
-		einfo "bzr pull start -->"
-		einfo "   repository: ${repo_uri}"
-
-		pushd "${branch_dir}" > /dev/null \
-			|| die "${EBZR}: can't chdir to ${branch_dir}"
-		${EBZR_UPDATE_CMD} ${EBZR_OPTIONS} "${repo_uri}" \
-			|| die "${EBZR}: can't pull from ${repo_uri}"
-		popd > /dev/null
-	fi
-}
-
-# @FUNCTION: bzr_fetch
-# @DESCRIPTION:
-# Wrapper function to fetch sources from a Bazaar repository with
-# bzr branch or bzr pull, depending on whether there is an existing
-# working copy.
-bzr_fetch() {
-	local repo_dir branch_dir
-	local save_sandbox_write=${SANDBOX_WRITE}
-
-	[[ -n ${EBZR_REPO_URI} ]] || die "${EBZR}: EBZR_REPO_URI is empty"
-
-	if [[ ! -d ${EBZR_STORE_DIR} ]] ; then
-		addwrite /
-		mkdir -p "${EBZR_STORE_DIR}" \
-			|| die "${EBZR}: can't mkdir ${EBZR_STORE_DIR}"
-		SANDBOX_WRITE=${save_sandbox_write}
-	fi
-
-	pushd "${EBZR_STORE_DIR}" > /dev/null \
-		|| die "${EBZR}: can't chdir to ${EBZR_STORE_DIR}"
-
-	repo_dir=${EBZR_STORE_DIR}/${EBZR_PROJECT}
-	branch_dir=${repo_dir}${EBZR_BRANCH:+/${EBZR_BRANCH}}
-
-	addwrite "${EBZR_STORE_DIR}"
-
-	if [[ ! -d ${branch_dir}/.bzr ]]; then
-		if [[ ${repo_dir} != "${branch_dir}" && ! -d ${repo_dir}/.bzr ]]; then
-			einfo "creating shared bzr repository: ${repo_dir}"
-			${EBZR_INIT_REPO_CMD} "${repo_dir}" \
-				|| die "${EBZR}: can't create shared repository"
-		fi
-
-		if [[ -z ${EBZR_INITIAL_URI} ]]; then
-			bzr_initial_fetch "${EBZR_REPO_URI}" "${branch_dir}"
-		else
-			# Workaround for faster initial download. This clones the
-			# branch from a fast server (which may be out of date), and
-			# subsequently pulls from the slow original repository.
-			bzr_initial_fetch "${EBZR_INITIAL_URI}" "${branch_dir}"
-			if [[ ${EBZR_REPO_URI} != "${EBZR_INITIAL_URI}" ]]; then
-				EBZR_UPDATE_CMD="${EBZR_UPDATE_CMD} --remember --overwrite" \
-					EBZR_OFFLINE="" \
-					bzr_update "${EBZR_REPO_URI}" "${branch_dir}"
-			fi
-		fi
-	else
-		bzr_update "${EBZR_REPO_URI}" "${branch_dir}"
-	fi
-
-	# Restore sandbox environment
-	SANDBOX_WRITE=${save_sandbox_write}
-
-	cd "${branch_dir}" || die "${EBZR}: can't chdir to ${branch_dir}"
-
-	# Save revision number in environment. #311101
-	export EBZR_REVNO=$(${EBZR_REVNO_CMD})
-
-	if [[ -n ${EBZR_WORKDIR_CHECKOUT} ]]; then
-		einfo "checking out ..."
-		${EBZR_CHECKOUT_CMD} ${EBZR_REVISION:+-r ${EBZR_REVISION}} \
-			. "${WORKDIR}/${P}" || die "${EBZR}: checkout failed"
-	else
-		einfo "exporting ..."
-		${EBZR_EXPORT_CMD} ${EBZR_REVISION:+-r ${EBZR_REVISION}} \
-			"${WORKDIR}/${P}" . || die "${EBZR}: export failed"
-	fi
-	einfo "revision ${EBZR_REVISION:-${EBZR_REVNO}} is now in ${WORKDIR}/${P}"
-
-	popd > /dev/null
-}
-
-# @FUNCTION: bzr_bootstrap
-# @DESCRIPTION:
-# Apply patches in ${EBZR_PATCHES} and run ${EBZR_BOOTSTRAP} if specified.
-bzr_bootstrap() {
-	local patch lpatch
-
-	pushd "${S}" > /dev/null || die "${EBZR}: can't chdir to ${S}"
-
-	if [[ -n ${EBZR_PATCHES} ]] ; then
-		einfo "apply patches -->"
-
-		for patch in ${EBZR_PATCHES} ; do
-			if [[ -f ${patch} ]] ; then
-				epatch ${patch}
-			else
-				# This loop takes care of wildcarded patches given via
-				# EBZR_PATCHES in an ebuild
-				for lpatch in "${FILESDIR}"/${patch} ; do
-					if [[ -f ${lpatch} ]] ; then
-						epatch ${lpatch}
-					else
-						die "${EBZR}: ${patch} is not found"
-					fi
-				done
-			fi
-		done
-	fi
-
-	if [[ -n ${EBZR_BOOTSTRAP} ]] ; then
-		einfo "begin bootstrap -->"
-
-		if [[ -f ${EBZR_BOOTSTRAP} ]] && [[ -x ${EBZR_BOOTSTRAP} ]] ; then
-			einfo "   bootstrap with a file: ${EBZR_BOOTSTRAP}"
-			"./${EBZR_BOOTSTRAP}" \
-				|| die "${EBZR}: can't execute EBZR_BOOTSTRAP"
-		else
-			einfo "   bootstrap with commands: ${EBZR_BOOTSTRAP}"
-			"${EBZR_BOOTSTRAP}" \
-				|| die "${EBZR}: can't eval EBZR_BOOTSTRAP"
-		fi
-	fi
-
-	popd > /dev/null
-}
-
-# @FUNCTION: bzr_src_unpack
-# @DESCRIPTION:
-# Default src_unpack(), calls bzr_fetch.  For EAPIs 0 and 1, also calls
-# bzr_src_prepare.
-bzr_src_unpack() {
-	bzr_fetch
-	case "${EAPI:-0}" in
-		0|1) bzr_src_prepare ;;
-	esac
-}
-
-# @FUNCTION: bzr_src_prepare
-# @DESCRIPTION:
-# Default src_prepare(), calls bzr_bootstrap.
-bzr_src_prepare() {
-	bzr_bootstrap
-}