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# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/git-2.eclass,v 1.33 2013/10/08 11:19:48 mgorny Exp $
# @ECLASS: git-2.eclass
# @MAINTAINER:
# Michał Górny <mgorny@gentoo.org>
# Donnie Berkholz <dberkholz@gentoo.org>
# @BLURB: Eclass for fetching and unpacking git repositories.
# @DESCRIPTION:
# Eclass for easing maitenance of live ebuilds using git as remote repository.
# Eclass support working with git submodules and branching.
# @ECLASS-VARIABLE: EGIT_USE_GIT_R3
# @DEFAULT_UNSET
# @DESCRIPTION:
# Use git-r3 backend instead of classic git-2 behavior. This is intended
# for early testing of git-r3 and is to be set in make.conf.
# (since we override src_unpack this doesn't hurt)
_INHERITED_BY_GIT_2=1 \
inherit git-r3
# This eclass support all EAPIs
EXPORT_FUNCTIONS src_unpack
DEPEND="dev-vcs/git"
# @ECLASS-VARIABLE: EGIT_SOURCEDIR
# @DESCRIPTION:
# This variable specifies destination where the cloned
# data are copied to.
#
# EGIT_SOURCEDIR="${S}"
# @ECLASS-VARIABLE: EGIT_STORE_DIR
# @DESCRIPTION:
# Storage directory for git sources.
#
# EGIT_STORE_DIR="${DISTDIR}/egit-src"
# @ECLASS-VARIABLE: EGIT_HAS_SUBMODULES
# @DEFAULT_UNSET
# @DESCRIPTION:
# If non-empty this variable enables support for git submodules in our
# checkout. Also this makes the checkout to be non-bare for now.
# @ECLASS-VARIABLE: EGIT_OPTIONS
# @DEFAULT_UNSET
# @DESCRIPTION:
# Variable specifying additional options for fetch command.
# @ECLASS-VARIABLE: EGIT_MASTER
# @DESCRIPTION:
# Variable for specifying master branch.
# Usefull when upstream don't have master branch or name it differently.
#
# EGIT_MASTER="master"
# @ECLASS-VARIABLE: EGIT_PROJECT
# @DESCRIPTION:
# Variable specifying name for the folder where we check out the git
# repository. Value of this variable should be unique in the
# EGIT_STORE_DIR as otherwise you would override another repository.
#
# EGIT_PROJECT="${EGIT_REPO_URI##*/}"
# @ECLASS-VARIABLE: EGIT_DIR
# @DESCRIPTION:
# Directory where we want to store the git data.
# This variable should not be overriden.
#
# EGIT_DIR="${EGIT_STORE_DIR}/${EGIT_PROJECT}"
# @ECLASS-VARIABLE: EGIT_REPO_URI
# @REQUIRED
# @DEFAULT_UNSET
# @DESCRIPTION:
# URI for the repository
# e.g. http://foo, git://bar
#
# It can be overriden via env using packagename_LIVE_REPO
# variable.
#
# Support multiple values:
# EGIT_REPO_URI="git://a/b.git http://c/d.git"
# @ECLASS-VARIABLE: EVCS_OFFLINE
# @DEFAULT_UNSET
# @DESCRIPTION:
# If non-empty this variable prevents performance of any online
# operations.
# @ECLASS-VARIABLE: EGIT_BRANCH
# @DESCRIPTION:
# Variable containing branch name we want to check out.
# It can be overriden via env using packagename_LIVE_BRANCH
# variable.
#
# EGIT_BRANCH="${EGIT_MASTER}"
# @ECLASS-VARIABLE: EGIT_COMMIT
# @DESCRIPTION:
# Variable containing commit hash/tag we want to check out.
# It can be overriden via env using packagename_LIVE_COMMIT
# variable.
#
# EGIT_COMMIT="${EGIT_BRANCH}"
# @ECLASS-VARIABLE: EGIT_REPACK
# @DEFAULT_UNSET
# @DESCRIPTION:
# If non-empty this variable specifies that repository will be repacked to
# save space. However this can take a REALLY LONG time with VERY big
# repositories.
# @ECLASS-VARIABLE: EGIT_PRUNE
# @DEFAULT_UNSET
# @DESCRIPTION:
# If non-empty this variable enables pruning all loose objects on each fetch.
# This is useful if upstream rewinds and rebases branches often.
# @ECLASS-VARIABLE: EGIT_NONBARE
# @DEFAULT_UNSET
# @DESCRIPTION:
# If non-empty this variable specifies that all checkouts will be done using
# non bare repositories. This is useful if you can't operate with bare
# checkouts for some reason.
# @ECLASS-VARIABLE: EGIT_NOUNPACK
# @DEFAULT_UNSET
# @DESCRIPTION:
# If non-empty this variable bans unpacking of ${A} content into the srcdir.
# Default behaviour is to unpack ${A} content.
# @FUNCTION: git-2_init_variables
# @INTERNAL
# @DESCRIPTION:
# Internal function initializing all git variables.
# We define it in function scope so user can define
# all the variables before and after inherit.
git-2_init_variables() {
debug-print-function ${FUNCNAME} "$@"
local esc_pn liverepo livebranch livecommit
esc_pn=${PN//[-+]/_}
: ${EGIT_SOURCEDIR="${S}"}
: ${EGIT_STORE_DIR:="${PORTAGE_ACTUAL_DISTDIR-${DISTDIR}}/egit-src"}
: ${EGIT_HAS_SUBMODULES:=}
: ${EGIT_OPTIONS:=}
: ${EGIT_MASTER:=master}
liverepo=${esc_pn}_LIVE_REPO
EGIT_REPO_URI=${!liverepo:-${EGIT_REPO_URI}}
[[ ${EGIT_REPO_URI} ]] || die "EGIT_REPO_URI must have some value"
: ${EVCS_OFFLINE:=}
livebranch=${esc_pn}_LIVE_BRANCH
[[ ${!livebranch} ]] && ewarn "QA: using \"${esc_pn}_LIVE_BRANCH\" variable, you won't get any support"
EGIT_BRANCH=${!livebranch:-${EGIT_BRANCH:-${EGIT_MASTER}}}
livecommit=${esc_pn}_LIVE_COMMIT
[[ ${!livecommit} ]] && ewarn "QA: using \"${esc_pn}_LIVE_COMMIT\" variable, you won't get any support"
EGIT_COMMIT=${!livecommit:-${EGIT_COMMIT:-${EGIT_BRANCH}}}
: ${EGIT_REPACK:=}
: ${EGIT_PRUNE:=}
}
# @FUNCTION: git-2_submodules
# @INTERNAL
# @DESCRIPTION:
# Internal function wrapping the submodule initialisation and update.
git-2_submodules() {
debug-print-function ${FUNCNAME} "$@"
if [[ ${EGIT_HAS_SUBMODULES} ]]; then
if [[ ${EVCS_OFFLINE} ]]; then
# for submodules operations we need to be online
debug-print "${FUNCNAME}: not updating submodules in offline mode"
return 1
fi
debug-print "${FUNCNAME}: working in \"${1}\""
pushd "${EGIT_DIR}" > /dev/null
debug-print "${FUNCNAME}: git submodule init"
git submodule init || die
debug-print "${FUNCNAME}: git submodule sync"
git submodule sync || die
debug-print "${FUNCNAME}: git submodule update"
git submodule update || die
popd > /dev/null
fi
}
# @FUNCTION: git-2_branch
# @INTERNAL
# @DESCRIPTION:
# Internal function that changes branch for the repo based on EGIT_COMMIT and
# EGIT_BRANCH variables.
git-2_branch() {
debug-print-function ${FUNCNAME} "$@"
local branchname src
debug-print "${FUNCNAME}: working in \"${EGIT_SOURCEDIR}\""
pushd "${EGIT_SOURCEDIR}" > /dev/null
local branchname=branch-${EGIT_BRANCH} src=origin/${EGIT_BRANCH}
if [[ ${EGIT_COMMIT} != ${EGIT_BRANCH} ]]; then
branchname=tree-${EGIT_COMMIT}
src=${EGIT_COMMIT}
fi
debug-print "${FUNCNAME}: git checkout -b ${branchname} ${src}"
git checkout -b ${branchname} ${src} \
|| die "${FUNCNAME}: changing the branch failed"
popd > /dev/null
}
# @FUNCTION: git-2_gc
# @INTERNAL
# @DESCRIPTION:
# Internal function running garbage collector on checked out tree.
git-2_gc() {
debug-print-function ${FUNCNAME} "$@"
local args
if [[ ${EGIT_REPACK} || ${EGIT_PRUNE} ]]; then
pushd "${EGIT_DIR}" > /dev/null
ebegin "Garbage collecting the repository"
[[ ${EGIT_PRUNE} ]] && args='--prune'
debug-print "${FUNCNAME}: git gc ${args}"
git gc ${args}
eend $?
popd > /dev/null
fi
}
# @FUNCTION: git-2_prepare_storedir
# @INTERNAL
# @DESCRIPTION:
# Internal function preparing directory where we are going to store SCM
# repository.
git-2_prepare_storedir() {
debug-print-function ${FUNCNAME} "$@"
local clone_dir
# initial clone, we have to create master git storage directory and play
# nicely with sandbox
if [[ ! -d ${EGIT_STORE_DIR} ]]; then
debug-print "${FUNCNAME}: Creating git main storage directory"
addwrite /
mkdir -m 775 -p "${EGIT_STORE_DIR}" \
|| die "${FUNCNAME}: can't mkdir \"${EGIT_STORE_DIR}\""
fi
# allow writing into EGIT_STORE_DIR
addwrite "${EGIT_STORE_DIR}"
# calculate git.eclass store dir for data
# We will try to clone the old repository,
# and we will remove it if we don't need it anymore.
EGIT_OLD_CLONE=
if [[ ${EGIT_STORE_DIR} == */egit-src ]]; then
local old_store_dir=${EGIT_STORE_DIR/%egit-src/git-src}
local old_location=${old_store_dir}/${EGIT_PROJECT:-${PN}}
if [[ -d ${old_location} ]]; then
EGIT_OLD_CLONE=${old_location}
# required to remove the old clone
addwrite "${old_store_dir}"
fi
fi
# calculate the proper store dir for data
# If user didn't specify the EGIT_DIR, we check if he did specify
# the EGIT_PROJECT or get the folder name from EGIT_REPO_URI.
EGIT_REPO_URI=${EGIT_REPO_URI%/}
if [[ ! ${EGIT_DIR} ]]; then
if [[ ${EGIT_PROJECT} ]]; then
clone_dir=${EGIT_PROJECT}
else
local strippeduri=${EGIT_REPO_URI%/.git}
clone_dir=${strippeduri##*/}
fi
EGIT_DIR=${EGIT_STORE_DIR}/${clone_dir}
if [[ ${EGIT_OLD_CLONE} && ! -d ${EGIT_DIR} ]]; then
elog "${FUNCNAME}: ${CATEGORY}/${PF} will be cloned from old location."
elog "It will be necessary to rebuild the package to fetch updates."
EGIT_REPO_URI="${EGIT_OLD_CLONE} ${EGIT_REPO_URI}"
fi
fi
export EGIT_DIR=${EGIT_DIR}
debug-print "${FUNCNAME}: Storing the repo into \"${EGIT_DIR}\"."
}
# @FUNCTION: git-2_move_source
# @INTERNAL
# @DESCRIPTION:
# Internal function moving sources from the EGIT_DIR to EGIT_SOURCEDIR dir.
git-2_move_source() {
debug-print-function ${FUNCNAME} "$@"
debug-print "${FUNCNAME}: ${MOVE_COMMAND} \"${EGIT_DIR}\" \"${EGIT_SOURCEDIR}\""
pushd "${EGIT_DIR}" > /dev/null
mkdir -p "${EGIT_SOURCEDIR}" \
|| die "${FUNCNAME}: failed to create ${EGIT_SOURCEDIR}"
${MOVE_COMMAND} "${EGIT_SOURCEDIR}" \
|| die "${FUNCNAME}: sync to \"${EGIT_SOURCEDIR}\" failed"
popd > /dev/null
}
# @FUNCTION: git-2_initial_clone
# @INTERNAL
# @DESCRIPTION:
# Internal function running initial clone on specified repo_uri.
git-2_initial_clone() {
debug-print-function ${FUNCNAME} "$@"
local repo_uri
EGIT_REPO_URI_SELECTED=""
for repo_uri in ${EGIT_REPO_URI}; do
debug-print "${FUNCNAME}: git clone ${EGIT_LOCAL_OPTIONS} \"${repo_uri}\" \"${EGIT_DIR}\""
if git clone ${EGIT_LOCAL_OPTIONS} "${repo_uri}" "${EGIT_DIR}"; then
# global variable containing the repo_name we will be using
debug-print "${FUNCNAME}: EGIT_REPO_URI_SELECTED=\"${repo_uri}\""
EGIT_REPO_URI_SELECTED="${repo_uri}"
break
fi
done
[[ ${EGIT_REPO_URI_SELECTED} ]] \
|| die "${FUNCNAME}: can't fetch from ${EGIT_REPO_URI}"
}
# @FUNCTION: git-2_update_repo
# @INTERNAL
# @DESCRIPTION:
# Internal function running update command on specified repo_uri.
git-2_update_repo() {
debug-print-function ${FUNCNAME} "$@"
local repo_uri
if [[ ${EGIT_LOCAL_NONBARE} ]]; then
# checkout master branch and drop all other local branches
git checkout ${EGIT_MASTER} || die "${FUNCNAME}: can't checkout master branch ${EGIT_MASTER}"
for x in $(git branch | grep -v "* ${EGIT_MASTER}" | tr '\n' ' '); do
debug-print "${FUNCNAME}: git branch -D ${x}"
git branch -D ${x} > /dev/null
done
fi
EGIT_REPO_URI_SELECTED=""
for repo_uri in ${EGIT_REPO_URI}; do
# git urls might change, so reset it
git config remote.origin.url "${repo_uri}"
debug-print "${EGIT_UPDATE_CMD}"
if ${EGIT_UPDATE_CMD} > /dev/null; then
# global variable containing the repo_name we will be using
debug-print "${FUNCNAME}: EGIT_REPO_URI_SELECTED=\"${repo_uri}\""
EGIT_REPO_URI_SELECTED="${repo_uri}"
break
fi
done
[[ ${EGIT_REPO_URI_SELECTED} ]] \
|| die "${FUNCNAME}: can't update from ${EGIT_REPO_URI}"
}
# @FUNCTION: git-2_fetch
# @INTERNAL
# @DESCRIPTION:
# Internal function fetching repository from EGIT_REPO_URI and storing it in
# specified EGIT_STORE_DIR.
git-2_fetch() {
debug-print-function ${FUNCNAME} "$@"
local oldsha cursha repo_type
[[ ${EGIT_LOCAL_NONBARE} ]] && repo_type="non-bare repository" || repo_type="bare repository"
if [[ ! -d ${EGIT_DIR} ]]; then
git-2_initial_clone
pushd "${EGIT_DIR}" > /dev/null
cursha=$(git rev-parse ${UPSTREAM_BRANCH})
echo "GIT NEW clone -->"
echo " repository: ${EGIT_REPO_URI_SELECTED}"
echo " at the commit: ${cursha}"
popd > /dev/null
elif [[ ${EVCS_OFFLINE} ]]; then
pushd "${EGIT_DIR}" > /dev/null
cursha=$(git rev-parse ${UPSTREAM_BRANCH})
echo "GIT offline update -->"
echo " repository: $(git config remote.origin.url)"
echo " at the commit: ${cursha}"
popd > /dev/null
else
pushd "${EGIT_DIR}" > /dev/null
oldsha=$(git rev-parse ${UPSTREAM_BRANCH})
git-2_update_repo
cursha=$(git rev-parse ${UPSTREAM_BRANCH})
# fetch updates
echo "GIT update -->"
echo " repository: ${EGIT_REPO_URI_SELECTED}"
# write out message based on the revisions
if [[ "${oldsha}" != "${cursha}" ]]; then
echo " updating from commit: ${oldsha}"
echo " to commit: ${cursha}"
else
echo " at the commit: ${cursha}"
fi
# print nice statistic of what was changed
git --no-pager diff --stat ${oldsha}..${UPSTREAM_BRANCH}
popd > /dev/null
fi
# export the version the repository is at
export EGIT_VERSION="${cursha}"
# log the repo state
[[ ${EGIT_COMMIT} != ${EGIT_BRANCH} ]] \
&& echo " commit: ${EGIT_COMMIT}"
echo " branch: ${EGIT_BRANCH}"
echo " storage directory: \"${EGIT_DIR}\""
echo " checkout type: ${repo_type}"
# Cleanup after git.eclass
if [[ ${EGIT_OLD_CLONE} ]]; then
einfo "${FUNCNAME}: removing old clone in ${EGIT_OLD_CLONE}."
rm -rf "${EGIT_OLD_CLONE}"
fi
}
# @FUNCTION: git_bootstrap
# @INTERNAL
# @DESCRIPTION:
# Internal function that runs bootstrap command on unpacked source.
git-2_bootstrap() {
debug-print-function ${FUNCNAME} "$@"
# @ECLASS-VARIABLE: EGIT_BOOTSTRAP
# @DESCRIPTION:
# Command to be executed after checkout and clone of the specified
# repository.
# enviroment the package will fail if there is no update, thus in
# combination with --keep-going it would lead in not-updating
# pakcages that are up-to-date.
if [[ ${EGIT_BOOTSTRAP} ]]; then
pushd "${EGIT_SOURCEDIR}" > /dev/null
einfo "Starting bootstrap"
if [[ -f ${EGIT_BOOTSTRAP} ]]; then
# we have file in the repo which we should execute
debug-print "${FUNCNAME}: bootstraping with file \"${EGIT_BOOTSTRAP}\""
if [[ -x ${EGIT_BOOTSTRAP} ]]; then
eval "./${EGIT_BOOTSTRAP}" \
|| die "${FUNCNAME}: bootstrap script failed"
else
eerror "\"${EGIT_BOOTSTRAP}\" is not executable."
eerror "Report upstream, or bug ebuild maintainer to remove bootstrap command."
die "\"${EGIT_BOOTSTRAP}\" is not executable"
fi
else
# we execute some system command
debug-print "${FUNCNAME}: bootstraping with commands \"${EGIT_BOOTSTRAP}\""
eval "${EGIT_BOOTSTRAP}" \
|| die "${FUNCNAME}: bootstrap commands failed"
fi
einfo "Bootstrap finished"
popd > /dev/null
fi
}
# @FUNCTION: git-2_migrate_repository
# @INTERNAL
# @DESCRIPTION:
# Internal function migrating between bare and normal checkout repository.
# This is based on usage of EGIT_SUBMODULES, at least until they
# start to work with bare checkouts sanely.
# This function also set some global variables that differ between
# bare and non-bare checkout.
git-2_migrate_repository() {
debug-print-function ${FUNCNAME} "$@"
local bare returnstate
# first find out if we have submodules
# or user explicitly wants us to use non-bare clones
if ! [[ ${EGIT_HAS_SUBMODULES} || ${EGIT_NONBARE} ]]; then
bare=1
fi
# test if we already have some repo and if so find out if we have
# to migrate the data
if [[ -d ${EGIT_DIR} ]]; then
if [[ ${bare} && -d ${EGIT_DIR}/.git ]]; then
debug-print "${FUNCNAME}: converting \"${EGIT_DIR}\" to bare copy"
ebegin "Converting \"${EGIT_DIR}\" from non-bare to bare copy"
mv "${EGIT_DIR}/.git" "${EGIT_DIR}.bare"
export GIT_DIR="${EGIT_DIR}.bare"
git config core.bare true > /dev/null
returnstate=$?
unset GIT_DIR
rm -rf "${EGIT_DIR}"
mv "${EGIT_DIR}.bare" "${EGIT_DIR}"
eend ${returnstate}
elif [[ ! ${bare} && ! -d ${EGIT_DIR}/.git ]]; then
debug-print "${FUNCNAME}: converting \"${EGIT_DIR}\" to non-bare copy"
ebegin "Converting \"${EGIT_DIR}\" from bare to non-bare copy"
git clone -l "${EGIT_DIR}" "${EGIT_DIR}.nonbare" > /dev/null
returnstate=$?
rm -rf "${EGIT_DIR}"
mv "${EGIT_DIR}.nonbare" "${EGIT_DIR}"
eend ${returnstate}
fi
fi
if [[ ${returnstate} -ne 0 ]]; then
debug-print "${FUNCNAME}: converting \"${EGIT_DIR}\" failed, removing to start from scratch"
# migration failed, remove the EGIT_DIR to play it safe
einfo "Migration failed, removing \"${EGIT_DIR}\" to start from scratch."
rm -rf "${EGIT_DIR}"
fi
# set various options to work with both targets
if [[ ${bare} ]]; then
debug-print "${FUNCNAME}: working in bare repository for \"${EGIT_DIR}\""
EGIT_LOCAL_OPTIONS+="${EGIT_OPTIONS} --bare"
MOVE_COMMAND="git clone -l -s -n ${EGIT_DIR// /\\ }"
EGIT_UPDATE_CMD="git fetch -t -f -u origin ${EGIT_BRANCH}:${EGIT_BRANCH}"
UPSTREAM_BRANCH="${EGIT_BRANCH}"
EGIT_LOCAL_NONBARE=
else
debug-print "${FUNCNAME}: working in bare repository for non-bare \"${EGIT_DIR}\""
MOVE_COMMAND="cp -pPR ."
EGIT_LOCAL_OPTIONS="${EGIT_OPTIONS}"
EGIT_UPDATE_CMD="git pull -f -u ${EGIT_OPTIONS}"
UPSTREAM_BRANCH="origin/${EGIT_BRANCH}"
EGIT_LOCAL_NONBARE="true"
fi
}
# @FUNCTION: git-2_cleanup
# @INTERNAL
# @DESCRIPTION:
# Internal function cleaning up all the global variables
# that are not required after the unpack has been done.
git-2_cleanup() {
debug-print-function ${FUNCNAME} "$@"
# Here we can unset only variables that are GLOBAL
# defined by the eclass, BUT NOT subject to change
# by user (like EGIT_PROJECT).
# If ebuild writer polutes his environment it is
# his problem only.
unset EGIT_DIR
unset MOVE_COMMAND
unset EGIT_LOCAL_OPTIONS
unset EGIT_UPDATE_CMD
unset UPSTREAM_BRANCH
unset EGIT_LOCAL_NONBARE
}
git-2_r3_wrapper() {
ewarn "Using git-r3 backend in git-2. Not everything is supported."
ewarn "Expect random failures and have fun testing."
if [[ ${EGIT_SOURCEDIR} ]]; then
EGIT_CHECKOUT_DIR=${EGIT_SOURCEDIR}
unset EGIT_SOURCEDIR
fi
if [[ ${EGIT_MASTER} ]]; then
: ${EGIT_BRANCH:=${EGIT_MASTER}}
unset EGIT_MASTER
fi
if [[ ${EGIT_HAS_SUBMODULES} ]]; then
unset EGIT_HAS_SUBMODULES
fi
if [[ ${EGIT_PROJECT} ]]; then
unset EGIT_PROJECT
fi
local boots unp
if [[ ${EGIT_NOUNPACK} ]]; then
unp=1
unset EGIT_NOUNPACK
fi
if [[ ${EGIT_BOOTSTRAP} ]]; then
boots=1
unset EGIT_BOOTSTRAP
fi
git-r3_src_unpack
[[ ${boots} ]] && EGIT_BOOTSTRAP=${boots} git-2_bootstrap
[[ ${unp} ]] && EGIT_NOUNPACK=1
}
# @FUNCTION: git-2_src_unpack
# @DESCRIPTION:
# Default git src_unpack function.
git-2_src_unpack() {
debug-print-function ${FUNCNAME} "$@"
if [[ ${EGIT_USE_GIT_R3} ]]; then
git-2_r3_wrapper
else
git-2_init_variables
git-2_prepare_storedir
git-2_migrate_repository
git-2_fetch "$@"
git-2_gc
git-2_submodules
git-2_move_source
git-2_branch
git-2_bootstrap
git-2_cleanup
echo ">>> Unpacked to ${EGIT_SOURCEDIR}"
fi
# Users can specify some SRC_URI and we should
# unpack the files too.
if [[ ! ${EGIT_NOUNPACK} ]]; then
if has ${EAPI:-0} 0 1; then
[[ ${A} ]] && unpack ${A}
else
default_src_unpack
fi
fi
}