# Copyright 1999-2014 Gentoo Foundation # Distributed under the terms of the GNU General Public License v2 # $Header: /var/cvsroot/gentoo-x86/eclass/git-r3.eclass,v 1.47 2014/07/28 14:13:50 mgorny Exp $ # @ECLASS: git-r3.eclass # @MAINTAINER: # Michał Górny <mgorny@gentoo.org> # @BLURB: Eclass for fetching and unpacking git repositories. # @DESCRIPTION: # Third generation eclass for easing maitenance of live ebuilds using # git as remote repository. case "${EAPI:-0}" in 0|1|2|3|4|5) ;; *) die "Unsupported EAPI=${EAPI} (unknown) for ${ECLASS}" ;; esac if [[ ! ${_GIT_R3} ]]; then inherit eutils fi EXPORT_FUNCTIONS src_unpack if [[ ! ${_GIT_R3} ]]; then if [[ ! ${_INHERITED_BY_GIT_2} ]]; then DEPEND=">=dev-vcs/git-1.8.2.1" fi # @ECLASS-VARIABLE: EGIT_CLONE_TYPE # @DESCRIPTION: # Type of clone that should be used against the remote repository. # This can be either of: 'mirror', 'single', 'shallow'. # # This is intended to be set by user in make.conf. Ebuilds are supposed # to set EGIT_MIN_CLONE_TYPE if necessary instead. # # The 'mirror' type clones all remote branches and tags with complete # history and all notes. EGIT_COMMIT can specify any commit hash. # Upstream-removed branches and tags are purged from the local clone # while fetching. This mode is suitable for cloning the local copy # for development or hosting a local git mirror. However, clones # of repositories with large diverged branches may quickly grow large. # # The 'single+tags' type clones the requested branch and all tags # in the repository. All notes are fetched as well. EGIT_COMMIT # can safely specify hashes throughout the current branch and all tags. # No purging of old references is done (if you often switch branches, # you may need to remove stale branches yourself). This mode is intended # mostly for use with broken git servers such as Google Code that fail # to fetch tags along with the branch in 'single' mode. # # The 'single' type clones only the requested branch or tag. Tags # referencing commits throughout the branch history are fetched as well, # and all notes. EGIT_COMMIT can safely specify only hashes # in the current branch. No purging of old references is done (if you # often switch branches, you may need to remove stale branches # yourself). This mode is suitable for general use. # # The 'shallow' type clones only the newest commit on requested branch # or tag. EGIT_COMMIT can only specify tags, and since the history is # unavailable calls like 'git describe' will not reference prior tags. # No purging of old references is done. This mode is intended mostly for # embedded systems with limited disk space. : ${EGIT_CLONE_TYPE:=single} # @ECLASS-VARIABLE: EGIT_MIN_CLONE_TYPE # @DESCRIPTION: # 'Minimum' clone type supported by the ebuild. Takes same values # as EGIT_CLONE_TYPE. When user sets a type that's 'lower' (that is, # later on the list) than EGIT_MIN_CLONE_TYPE, the eclass uses # EGIT_MIN_CLONE_TYPE instead. # # This variable is intended to be used by ebuilds only. Users are # supposed to set EGIT_CLONE_TYPE instead. # # A common case is to use 'single' whenever the build system requires # access to full branch history, or 'single+tags' when Google Code # or a similar remote is used that does not support shallow clones # and fetching tags along with commits. Please use sparingly, and to fix # fatal errors rather than 'non-pretty versions'. : ${EGIT_MIN_CLONE_TYPE:=shallow} # @ECLASS-VARIABLE: EGIT3_STORE_DIR # @DESCRIPTION: # Storage directory for git sources. # # This is intended to be set by user in make.conf. Ebuilds must not set # it. # # EGIT3_STORE_DIR=${DISTDIR}/git3-src # @ECLASS-VARIABLE: EGIT_MIRROR_URI # @DEFAULT_UNSET # @DESCRIPTION: # 'Top' URI to a local git mirror. If specified, the eclass will try # to fetch from the local mirror instead of using the remote repository. # # The mirror needs to follow EGIT3_STORE_DIR structure. The directory # created by eclass can be used for that purpose. # # Example: # @CODE # EGIT_MIRROR_URI="git://mirror.lan/" # @CODE # @ECLASS-VARIABLE: EGIT_REPO_URI # @REQUIRED # @DESCRIPTION: # URIs to the repository, e.g. git://foo, https://foo. If multiple URIs # are provided, the eclass will consider them as fallback URIs to try # if the first URI does not work. For supported URI syntaxes, read up # the manpage for git-clone(1). # # It can be overriden via env using ${PN}_LIVE_REPO variable. # # Can be a whitespace-separated list or an array. # # Example: # @CODE # EGIT_REPO_URI="git://a/b.git https://c/d.git" # @CODE # @ECLASS-VARIABLE: EVCS_OFFLINE # @DEFAULT_UNSET # @DESCRIPTION: # If non-empty, this variable prevents any online operations. # @ECLASS-VARIABLE: EGIT_BRANCH # @DEFAULT_UNSET # @DESCRIPTION: # The branch name to check out. If unset, the upstream default (HEAD) # will be used. # # It can be overriden via env using ${PN}_LIVE_BRANCH variable. # @ECLASS-VARIABLE: EGIT_COMMIT # @DEFAULT_UNSET # @DESCRIPTION: # The tag name or commit identifier to check out. If unset, newest # commit from the branch will be used. If set, EGIT_BRANCH will # be ignored. # # It can be overriden via env using ${PN}_LIVE_COMMIT variable. # @ECLASS-VARIABLE: EGIT_CHECKOUT_DIR # @DESCRIPTION: # The directory to check the git sources out to. # # EGIT_CHECKOUT_DIR=${WORKDIR}/${P} # @FUNCTION: _git-r3_env_setup # @INTERNAL # @DESCRIPTION: # Set the eclass variables as necessary for operation. This can involve # setting EGIT_* to defaults or ${PN}_LIVE_* variables. _git-r3_env_setup() { debug-print-function ${FUNCNAME} "$@" # check the clone type case "${EGIT_CLONE_TYPE}" in mirror|single+tags|single|shallow) ;; *) die "Invalid EGIT_CLONE_TYPE=${EGIT_CLONE_TYPE}" esac case "${EGIT_MIN_CLONE_TYPE}" in shallow) ;; single) if [[ ${EGIT_CLONE_TYPE} == shallow ]]; then einfo "git-r3: ebuild needs to be cloned in 'single' mode, adjusting" EGIT_CLONE_TYPE=single fi ;; single+tags) if [[ ${EGIT_CLONE_TYPE} == shallow || ${EGIT_CLONE_TYPE} == single ]]; then einfo "git-r3: ebuild needs to be cloned in 'single+tags' mode, adjusting" EGIT_CLONE_TYPE=single+tags fi ;; mirror) if [[ ${EGIT_CLONE_TYPE} != mirror ]]; then einfo "git-r3: ebuild needs to be cloned in 'mirror' mode, adjusting" EGIT_CLONE_TYPE=mirror fi ;; *) die "Invalid EGIT_MIN_CLONE_TYPE=${EGIT_MIN_CLONE_TYPE}" esac local esc_pn livevar esc_pn=${PN//[-+]/_} livevar=${esc_pn}_LIVE_REPO EGIT_REPO_URI=${!livevar:-${EGIT_REPO_URI}} [[ ${!livevar} ]] \ && ewarn "Using ${livevar}, no support will be provided" livevar=${esc_pn}_LIVE_BRANCH EGIT_BRANCH=${!livevar:-${EGIT_BRANCH}} [[ ${!livevar} ]] \ && ewarn "Using ${livevar}, no support will be provided" livevar=${esc_pn}_LIVE_COMMIT EGIT_COMMIT=${!livevar:-${EGIT_COMMIT}} [[ ${!livevar} ]] \ && ewarn "Using ${livevar}, no support will be provided" # Migration helpers. Remove them when git-2 is removed. if [[ ${EGIT_SOURCEDIR} ]]; then eerror "EGIT_SOURCEDIR has been replaced by EGIT_CHECKOUT_DIR. While updating" eerror "your ebuild, please check whether the variable is necessary at all" eerror "since the default has been changed from \${S} to \${WORKDIR}/\${P}." eerror "Therefore, proper setting of S may be sufficient." die "EGIT_SOURCEDIR has been replaced by EGIT_CHECKOUT_DIR." fi if [[ ${EGIT_MASTER} ]]; then eerror "EGIT_MASTER has been removed. Instead, the upstream default (HEAD)" eerror "is used by the eclass. Please remove the assignment or use EGIT_BRANCH" eerror "as necessary." die "EGIT_MASTER has been removed." fi if [[ ${EGIT_HAS_SUBMODULES} ]]; then eerror "EGIT_HAS_SUBMODULES has been removed. The eclass no longer needs" eerror "to switch the clone type in order to support submodules and therefore" eerror "submodules are detected and fetched automatically." die "EGIT_HAS_SUBMODULES is no longer necessary." fi if [[ ${EGIT_PROJECT} ]]; then eerror "EGIT_PROJECT has been removed. Instead, the eclass determines" eerror "the local clone path using path in canonical EGIT_REPO_URI." eerror "If the current algorithm causes issues for you, please report a bug." die "EGIT_PROJECT is no longer necessary." fi if [[ ${EGIT_BOOTSTRAP} ]]; then eerror "EGIT_BOOTSTRAP has been removed. Please create proper src_prepare()" eerror "instead." die "EGIT_BOOTSTRAP has been removed." fi if [[ ${EGIT_NOUNPACK} ]]; then eerror "EGIT_NOUNPACK has been removed. The eclass no longer calls default" eerror "unpack function. If necessary, please declare proper src_unpack()." die "EGIT_NOUNPACK has been removed." fi } # @FUNCTION: _git-r3_set_gitdir # @USAGE: <repo-uri> # @INTERNAL # @DESCRIPTION: # Obtain the local repository path and set it as GIT_DIR. Creates # a new repository if necessary. # # <repo-uri> may be used to compose the path. It should therefore be # a canonical URI to the repository. _git-r3_set_gitdir() { debug-print-function ${FUNCNAME} "$@" local repo_name=${1#*://*/} # strip the trailing slash repo_name=${repo_name%/} # strip common prefixes to make paths more likely to match # e.g. git://X/Y.git vs https://X/git/Y.git # (but just one of the prefixes) case "${repo_name}" in # gnome.org... who else? browse/*) repo_name=${repo_name#browse/};; # cgit can proxy requests to git cgit/*) repo_name=${repo_name#cgit/};; # pretty common git/*) repo_name=${repo_name#git/};; # gentoo.org gitroot/*) repo_name=${repo_name#gitroot/};; # google code, sourceforge p/*) repo_name=${repo_name#p/};; # kernel.org pub/scm/*) repo_name=${repo_name#pub/scm/};; esac # ensure a .git suffix, same reason repo_name=${repo_name%.git}.git # now replace all the slashes repo_name=${repo_name//\//_} local distdir=${PORTAGE_ACTUAL_DISTDIR:-${DISTDIR}} : ${EGIT3_STORE_DIR:=${distdir}/git3-src} GIT_DIR=${EGIT3_STORE_DIR}/${repo_name} if [[ ! -d ${EGIT3_STORE_DIR} ]]; then ( addwrite / mkdir -p "${EGIT3_STORE_DIR}" || die ) || die "Unable to create ${EGIT3_STORE_DIR}" fi addwrite "${EGIT3_STORE_DIR}" if [[ ! -d ${GIT_DIR} ]]; then mkdir "${GIT_DIR}" || die git init --bare || die fi } # @FUNCTION: _git-r3_set_submodules # @USAGE: <file-contents> # @INTERNAL # @DESCRIPTION: # Parse .gitmodules contents passed as <file-contents> # as in "$(cat .gitmodules)"). Composes a 'submodules' array that # contains in order (name, URL, path) for each submodule. _git-r3_set_submodules() { debug-print-function ${FUNCNAME} "$@" local data=${1} # ( name url path ... ) submodules=() local l while read l; do # submodule.<path>.path=<path> # submodule.<path>.url=<url> [[ ${l} == submodule.*.url=* ]] || continue l=${l#submodule.} local subname=${l%%.url=*} # skip modules that have 'update = none', bug #487262. local upd=$(echo "${data}" | git config -f /dev/fd/0 \ submodule."${subname}".update) [[ ${upd} == none ]] && continue submodules+=( "${subname}" "$(echo "${data}" | git config -f /dev/fd/0 \ submodule."${subname}".url || die)" "$(echo "${data}" | git config -f /dev/fd/0 \ submodule."${subname}".path || die)" ) done < <(echo "${data}" | git config -f /dev/fd/0 -l || die) } # @FUNCTION: _git-r3_set_subrepos # @USAGE: <submodule-uri> <parent-repo-uri>... # @INTERNAL # @DESCRIPTION: # Create 'subrepos' array containing absolute (canonical) submodule URIs # for the given <submodule-uri>. If the URI is relative, URIs will be # constructed using all <parent-repo-uri>s. Otherwise, this single URI # will be placed in the array. _git-r3_set_subrepos() { debug-print-function ${FUNCNAME} "$@" local suburl=${1} subrepos=( "${@:2}" ) if [[ ${suburl} == ./* || ${suburl} == ../* ]]; then # drop all possible trailing slashes for consistency subrepos=( "${subrepos[@]%%/}" ) while true; do if [[ ${suburl} == ./* ]]; then suburl=${suburl:2} elif [[ ${suburl} == ../* ]]; then suburl=${suburl:3} # XXX: correctness checking # drop the last path component subrepos=( "${subrepos[@]%/*}" ) # and then the trailing slashes, again subrepos=( "${subrepos[@]%%/}" ) else break fi done # append the preprocessed path to the preprocessed URIs subrepos=( "${subrepos[@]/%//${suburl}}") else subrepos=( "${suburl}" ) fi } # @FUNCTION: _git-r3_is_local_repo # @USAGE: <repo-uri> # @INTERNAL # @DESCRIPTION: # Determine whether the given URI specifies a local (on-disk) # repository. _git-r3_is_local_repo() { debug-print-function ${FUNCNAME} "$@" local uri=${1} [[ ${uri} == file://* || ${uri} == /* ]] } # @FUNCTION: _git-r3_find_head # @USAGE: <head-ref> # @INTERNAL # @DESCRIPTION: # Given a ref to which remote HEAD was fetched, try to find # a branch matching the commit. Expects 'git show-ref' # or 'git ls-remote' output on stdin. _git-r3_find_head() { debug-print-function ${FUNCNAME} "$@" local head_ref=${1} local head_hash=$(git rev-parse --verify "${1}" || die) local matching_ref # TODO: some transports support peeking at symbolic remote refs # find a way to use that rather than guessing # (based on guess_remote_head() in git-1.9.0/remote.c) local h ref while read h ref; do # look for matching head if [[ ${h} == ${head_hash} ]]; then # either take the first matching ref, or master if it is there if [[ ! ${matching_ref} || ${ref} == refs/heads/master ]]; then matching_ref=${ref} fi fi done if [[ ! ${matching_ref} ]]; then die "Unable to find a matching branch for remote HEAD (${head_hash})" fi echo "${matching_ref}" } # @FUNCTION: git-r3_fetch # @USAGE: [<repo-uri> [<remote-ref> [<local-id>]]] # @DESCRIPTION: # Fetch new commits to the local clone of repository. # # <repo-uri> specifies the repository URIs to fetch from, as a space- # -separated list. The first URI will be used as repository group # identifier and therefore must be used consistently. When not # specified, defaults to ${EGIT_REPO_URI}. # # <remote-ref> specifies the remote ref or commit id to fetch. # It is preferred to use 'refs/heads/<branch-name>' for branches # and 'refs/tags/<tag-name>' for tags. Other options are 'HEAD' # for upstream default branch and hexadecimal commit SHA1. Defaults # to the first of EGIT_COMMIT, EGIT_BRANCH or literal 'HEAD' that # is set to a non-null value. # # <local-id> specifies the local branch identifier that will be used to # locally store the fetch result. It should be unique to multiple # fetches within the repository that can be performed at the same time # (including parallel merges). It defaults to ${CATEGORY}/${PN}/${SLOT%/*}. # This default should be fine unless you are fetching multiple trees # from the same repository in the same ebuild. # # The fetch operation will affect the EGIT_STORE only. It will not touch # the working copy, nor export any environment variables. # If the repository contains submodules, they will be fetched # recursively. git-r3_fetch() { debug-print-function ${FUNCNAME} "$@" [[ ${EVCS_OFFLINE} ]] && return local repos if [[ ${1} ]]; then repos=( ${1} ) elif [[ $(declare -p EGIT_REPO_URI) == "declare -a"* ]]; then repos=( "${EGIT_REPO_URI[@]}" ) else repos=( ${EGIT_REPO_URI} ) fi local branch=${EGIT_BRANCH:+refs/heads/${EGIT_BRANCH}} local remote_ref=${2:-${EGIT_COMMIT:-${branch:-HEAD}}} local local_id=${3:-${CATEGORY}/${PN}/${SLOT%/*}} local local_ref=refs/git-r3/${local_id}/__main__ [[ ${repos[@]} ]] || die "No URI provided and EGIT_REPO_URI unset" local -x GIT_DIR _git-r3_set_gitdir "${repos[0]}" # prepend the local mirror if applicable if [[ ${EGIT_MIRROR_URI} ]]; then repos=( "${EGIT_MIRROR_URI%/}/${GIT_DIR##*/}" "${repos[@]}" ) fi # try to fetch from the remote local r success for r in "${repos[@]}"; do einfo "Fetching ${r} ..." local fetch_command=( git fetch "${r}" ) local clone_type=${EGIT_CLONE_TYPE} if [[ ${r} == https://* ]] && ! ROOT=/ has_version 'dev-vcs/git[curl]'; then eerror "git-r3: fetching from https:// requested. In order to support https," eerror "dev-vcs/git needs to be built with USE=curl. Example solution:" eerror eerror " echo dev-vcs/git curl >> /etc/portage/package.use" eerror " emerge -1v dev-vcs/git" die "dev-vcs/git built with USE=curl required." fi if [[ ${r} == https://code.google.com/* ]]; then # Google Code has special magic on top of git that: # 1) can't handle shallow clones at all, # 2) fetches duplicately when tags are pulled in with branch # so automatically switch to single+tags mode. if [[ ${clone_type} == shallow ]]; then einfo " Google Code does not support shallow clones" einfo " using EGIT_CLONE_TYPE=single+tags" clone_type=single+tags elif [[ ${clone_type} == single ]]; then einfo " git-r3: Google Code does not send tags properly in 'single' mode" einfo " using EGIT_CLONE_TYPE=single+tags" clone_type=single+tags fi fi if [[ ${clone_type} == mirror ]]; then fetch_command+=( --prune # mirror the remote branches as local branches "+refs/heads/*:refs/heads/*" # pull tags explicitly in order to prune them properly "+refs/tags/*:refs/tags/*" # notes in case something needs them "+refs/notes/*:refs/notes/*" # and HEAD in case we need the default branch # (we keep it in refs/git-r3 since otherwise --prune interferes) "+HEAD:refs/git-r3/HEAD" ) else # single or shallow local fetch_l fetch_r if [[ ${remote_ref} == HEAD ]]; then # HEAD fetch_l=HEAD elif [[ ${remote_ref} == refs/heads/* ]]; then # regular branch fetch_l=${remote_ref} else # tag or commit... # let ls-remote figure it out local tagref=$(git ls-remote "${r}" "refs/tags/${remote_ref}") # if it was a tag, ls-remote obtained a hash if [[ ${tagref} ]]; then # tag fetch_l=refs/tags/${remote_ref} else # commit # so we need to fetch the branch if [[ ${branch} ]]; then fetch_l=${branch} else fetch_l=HEAD fi # fetching by commit in shallow mode? can't do. if [[ ${clone_type} == shallow ]]; then clone_type=single fi fi fi if [[ ${fetch_l} == HEAD ]]; then fetch_r=refs/git-r3/HEAD else fetch_r=${fetch_l} fi fetch_command+=( "+${fetch_l}:${fetch_r}" ) if [[ ${clone_type} == single+tags ]]; then fetch_command+=( # pull tags explicitly as requested "+refs/tags/*:refs/tags/*" ) fi fi if [[ ${clone_type} == shallow ]]; then if _git-r3_is_local_repo; then # '--depth 1' causes sandbox violations with local repos # bug #491260 clone_type=single elif [[ ! $(git rev-parse --quiet --verify "${fetch_r}") ]] then # use '--depth 1' when fetching a new branch fetch_command+=( --depth 1 ) fi else # non-shallow mode if [[ -f ${GIT_DIR}/shallow ]]; then fetch_command+=( --unshallow ) fi fi set -- "${fetch_command[@]}" echo "${@}" >&2 if "${@}"; then if [[ ${clone_type} == mirror ]]; then # find remote HEAD and update our HEAD properly git symbolic-ref HEAD \ "$(_git-r3_find_head refs/git-r3/HEAD \ < <(git show-ref --heads || die))" \ || die "Unable to update HEAD" else # single or shallow if [[ ${fetch_l} == HEAD ]]; then # find out what branch we fetched as HEAD local head_branch=$(_git-r3_find_head \ refs/git-r3/HEAD \ < <(git ls-remote --heads "${r}" || die)) # and move it to its regular place git update-ref --no-deref "${head_branch}" \ refs/git-r3/HEAD \ || die "Unable to sync HEAD branch ${head_branch}" git symbolic-ref HEAD "${head_branch}" \ || die "Unable to update HEAD" fi fi # now let's see what the user wants from us local full_remote_ref=$( git rev-parse --verify --symbolic-full-name "${remote_ref}" ) if [[ ${full_remote_ref} ]]; then # when we are given a ref, create a symbolic ref # so that we preserve the actual argument set -- git symbolic-ref "${local_ref}" "${full_remote_ref}" else # otherwise, we were likely given a commit id set -- git update-ref --no-deref "${local_ref}" "${remote_ref}" fi echo "${@}" >&2 if ! "${@}"; then die "Referencing ${remote_ref} failed (wrong ref?)." fi success=1 break fi done [[ ${success} ]] || die "Unable to fetch from any of EGIT_REPO_URI" # submodules can reference commits in any branch # always use the 'clone' mode to accomodate that, bug #503332 local EGIT_CLONE_TYPE=mirror # recursively fetch submodules if git cat-file -e "${local_ref}":.gitmodules &>/dev/null; then local submodules _git-r3_set_submodules \ "$(git cat-file -p "${local_ref}":.gitmodules || die)" while [[ ${submodules[@]} ]]; do local subname=${submodules[0]} local url=${submodules[1]} local path=${submodules[2]} local commit=$(git rev-parse "${local_ref}:${path}") if [[ ! ${commit} ]]; then die "Unable to get commit id for submodule ${subname}" fi local subrepos _git-r3_set_subrepos "${url}" "${repos[@]}" git-r3_fetch "${subrepos[*]}" "${commit}" "${local_id}/${subname}" submodules=( "${submodules[@]:3}" ) # shift done fi } # @FUNCTION: git-r3_checkout # @USAGE: [<repo-uri> [<checkout-path> [<local-id>]]] # @DESCRIPTION: # Check the previously fetched tree to the working copy. # # <repo-uri> specifies the repository URIs, as a space-separated list. # The first URI will be used as repository group identifier # and therefore must be used consistently with git-r3_fetch. # The remaining URIs are not used and therefore may be omitted. # When not specified, defaults to ${EGIT_REPO_URI}. # # <checkout-path> specifies the path to place the checkout. It defaults # to ${EGIT_CHECKOUT_DIR} if set, otherwise to ${WORKDIR}/${P}. # # <local-id> needs to specify the local identifier that was used # for respective git-r3_fetch. # # The checkout operation will write to the working copy, and export # the repository state into the environment. If the repository contains # submodules, they will be checked out recursively. git-r3_checkout() { debug-print-function ${FUNCNAME} "$@" local repos if [[ ${1} ]]; then repos=( ${1} ) elif [[ $(declare -p EGIT_REPO_URI) == "declare -a"* ]]; then repos=( "${EGIT_REPO_URI[@]}" ) else repos=( ${EGIT_REPO_URI} ) fi local out_dir=${2:-${EGIT_CHECKOUT_DIR:-${WORKDIR}/${P}}} local local_id=${3:-${CATEGORY}/${PN}/${SLOT%/*}} local -x GIT_DIR _git-r3_set_gitdir "${repos[0]}" einfo "Checking out ${repos[0]} to ${out_dir} ..." if ! git cat-file -e refs/git-r3/"${local_id}"/__main__; then if [[ ${EVCS_OFFLINE} ]]; then die "No local clone of ${repos[0]}. Unable to work with EVCS_OFFLINE." else die "Logic error: no local clone of ${repos[0]}. git-r3_fetch not used?" fi fi local remote_ref=$( git symbolic-ref --quiet refs/git-r3/"${local_id}"/__main__ ) local new_commit_id=$( git rev-parse --verify refs/git-r3/"${local_id}"/__main__ ) git-r3_sub_checkout() { local orig_repo=${GIT_DIR} local -x GIT_DIR=${out_dir}/.git local -x GIT_WORK_TREE=${out_dir} mkdir -p "${out_dir}" || die # use git init+fetch instead of clone since the latter doesn't like # non-empty directories. git init --quiet || die # setup 'alternates' to avoid copying objects echo "${orig_repo}/objects" > "${GIT_DIR}"/objects/info/alternates || die # now copy the refs # [htn]* safely catches heads, tags, notes without complaining # on non-existing ones, and omits internal 'git-r3' ref cp -R "${orig_repo}"/refs/[htn]* "${GIT_DIR}"/refs/ || die # (no need to copy HEAD, we will set it via checkout) if [[ -f ${orig_repo}/shallow ]]; then cp "${orig_repo}"/shallow "${GIT_DIR}"/ || die fi set -- git checkout --quiet if [[ ${remote_ref} ]]; then set -- "${@}" "${remote_ref#refs/heads/}" else set -- "${@}" "${new_commit_id}" fi echo "${@}" >&2 "${@}" || die "git checkout ${remote_ref:-${new_commit_id}} failed" } git-r3_sub_checkout local old_commit_id=$( git rev-parse --quiet --verify refs/git-r3/"${local_id}"/__old__ ) if [[ ! ${old_commit_id} ]]; then echo "GIT NEW branch -->" echo " repository: ${repos[0]}" echo " at the commit: ${new_commit_id}" else # diff against previous revision echo "GIT update -->" echo " repository: ${repos[0]}" # write out message based on the revisions if [[ "${old_commit_id}" != "${new_commit_id}" ]]; then echo " updating from commit: ${old_commit_id}" echo " to commit: ${new_commit_id}" git --no-pager diff --stat \ ${old_commit_id}..${new_commit_id} else echo " at the commit: ${new_commit_id}" fi fi git update-ref --no-deref refs/git-r3/"${local_id}"/{__old__,__main__} || die # recursively checkout submodules if [[ -f ${out_dir}/.gitmodules ]]; then local submodules _git-r3_set_submodules \ "$(<"${out_dir}"/.gitmodules)" while [[ ${submodules[@]} ]]; do local subname=${submodules[0]} local url=${submodules[1]} local path=${submodules[2]} local subrepos _git-r3_set_subrepos "${url}" "${repos[@]}" git-r3_checkout "${subrepos[*]}" "${out_dir}/${path}" \ "${local_id}/${subname}" submodules=( "${submodules[@]:3}" ) # shift done fi # keep this *after* submodules export EGIT_DIR=${GIT_DIR} export EGIT_VERSION=${new_commit_id} } # @FUNCTION: git-r3_peek_remote_ref # @USAGE: [<repo-uri> [<remote-ref>]] # @DESCRIPTION: # Peek the reference in the remote repository and print the matching # (newest) commit SHA1. # # <repo-uri> specifies the repository URIs to fetch from, as a space- # -separated list. When not specified, defaults to ${EGIT_REPO_URI}. # # <remote-ref> specifies the remote ref to peek. It is preferred to use # 'refs/heads/<branch-name>' for branches and 'refs/tags/<tag-name>' # for tags. Alternatively, 'HEAD' may be used for upstream default # branch. Defaults to the first of EGIT_COMMIT, EGIT_BRANCH or literal # 'HEAD' that is set to a non-null value. # # The operation will be done purely on the remote, without using local # storage. If commit SHA1 is provided as <remote-ref>, the function will # fail due to limitations of git protocol. # # On success, the function returns 0 and writes hexadecimal commit SHA1 # to stdout. On failure, the function returns 1. git-r3_peek_remote_ref() { debug-print-function ${FUNCNAME} "$@" local repos if [[ ${1} ]]; then repos=( ${1} ) elif [[ $(declare -p EGIT_REPO_URI) == "declare -a"* ]]; then repos=( "${EGIT_REPO_URI[@]}" ) else repos=( ${EGIT_REPO_URI} ) fi local branch=${EGIT_BRANCH:+refs/heads/${EGIT_BRANCH}} local remote_ref=${2:-${EGIT_COMMIT:-${branch:-HEAD}}} [[ ${repos[@]} ]] || die "No URI provided and EGIT_REPO_URI unset" local r success for r in "${repos[@]}"; do einfo "Peeking ${remote_ref} on ${r} ..." >&2 local is_branch lookup_ref if [[ ${remote_ref} == refs/heads/* || ${remote_ref} == HEAD ]] then is_branch=1 lookup_ref=${remote_ref} else # ls-remote by commit is going to fail anyway, # so we may as well pass refs/tags/ABCDEF... lookup_ref=refs/tags/${remote_ref} fi # split on whitespace local ref=( $(git ls-remote "${r}" "${lookup_ref}") ) if [[ ${ref[0]} ]]; then echo "${ref[0]}" return 0 fi done return 1 } git-r3_src_fetch() { debug-print-function ${FUNCNAME} "$@" if [[ ! ${EGIT3_STORE_DIR} && ${EGIT_STORE_DIR} ]]; then ewarn "You have set EGIT_STORE_DIR but not EGIT3_STORE_DIR. Please consider" ewarn "setting EGIT3_STORE_DIR for git-r3.eclass. It is recommended to use" ewarn "a different directory than EGIT_STORE_DIR to ease removing old clones" ewarn "when git-2 eclass becomes deprecated." fi _git-r3_env_setup git-r3_fetch } git-r3_src_unpack() { debug-print-function ${FUNCNAME} "$@" _git-r3_env_setup git-r3_src_fetch git-r3_checkout } # https://bugs.gentoo.org/show_bug.cgi?id=482666 git-r3_pkg_outofdate() { debug-print-function ${FUNCNAME} "$@" local new_commit_id=$(git-r3_peek_remote_ref) ewarn "old: ${EGIT_VERSION}" ewarn "new: ${new_commit_id}" [[ ${new_commit_id} && ${old_commit_id} ]] || return 2 [[ ${EGIT_VERSION} != ${new_commit_id} ]] } _GIT_R3=1 fi