1 # Copyright 1999-2019 Gentoo Authors
2 # Distributed under the terms of the GNU General Public License v2
4 # @ECLASS: git-r3.eclass
6 # Michał Górny <mgorny@gentoo.org>
7 # @SUPPORTED_EAPIS: 4 5 6 7
8 # @BLURB: Eclass for fetching and unpacking git repositories.
10 # Third generation eclass for easing maintenance of live ebuilds using
11 # git as remote repository.
15 die "Unsupported EAPI=${EAPI} (obsolete) for ${ECLASS}"
20 die "Unsupported EAPI=${EAPI} (unknown) for ${ECLASS}"
24 EXPORT_FUNCTIONS src_unpack
26 if [[ ! ${_GIT_R3} ]]; then
30 if [[ ! ${_INHERITED_BY_GIT_2} ]]; then
31 if [[ ${EAPI:-0} != [0123456] ]]; then
32 BDEPEND=">=dev-vcs/git-1.8.2.1[curl]"
34 DEPEND=">=dev-vcs/git-1.8.2.1[curl]"
38 # @ECLASS-VARIABLE: EGIT_CLONE_TYPE
40 # Type of clone that should be used against the remote repository.
41 # This can be either of: 'mirror', 'single', 'shallow'.
43 # This is intended to be set by user in make.conf. Ebuilds are supposed
44 # to set EGIT_MIN_CLONE_TYPE if necessary instead.
46 # The 'mirror' type clones all remote branches and tags with complete
47 # history and all notes. EGIT_COMMIT can specify any commit hash.
48 # Upstream-removed branches and tags are purged from the local clone
49 # while fetching. This mode is suitable for cloning the local copy
50 # for development or hosting a local git mirror. However, clones
51 # of repositories with large diverged branches may quickly grow large.
53 # The 'single+tags' type clones the requested branch and all tags
54 # in the repository. All notes are fetched as well. EGIT_COMMIT
55 # can safely specify hashes throughout the current branch and all tags.
56 # No purging of old references is done (if you often switch branches,
57 # you may need to remove stale branches yourself). This mode is intended
58 # mostly for use with broken git servers such as Google Code that fail
59 # to fetch tags along with the branch in 'single' mode.
61 # The 'single' type clones only the requested branch or tag. Tags
62 # referencing commits throughout the branch history are fetched as well,
63 # and all notes. EGIT_COMMIT can safely specify only hashes
64 # in the current branch. No purging of old references is done (if you
65 # often switch branches, you may need to remove stale branches
66 # yourself). This mode is suitable for general use.
68 # The 'shallow' type clones only the newest commit on requested branch
69 # or tag. EGIT_COMMIT can only specify tags, and since the history is
70 # unavailable calls like 'git describe' will not reference prior tags.
71 # No purging of old references is done. This mode is intended mostly for
72 # embedded systems with limited disk space.
73 : ${EGIT_CLONE_TYPE:=single}
75 # @ECLASS-VARIABLE: EGIT_MIN_CLONE_TYPE
77 # 'Minimum' clone type supported by the ebuild. Takes same values
78 # as EGIT_CLONE_TYPE. When user sets a type that's 'lower' (that is,
79 # later on the list) than EGIT_MIN_CLONE_TYPE, the eclass uses
80 # EGIT_MIN_CLONE_TYPE instead.
82 # This variable is intended to be used by ebuilds only. Users are
83 # supposed to set EGIT_CLONE_TYPE instead.
85 # A common case is to use 'single' whenever the build system requires
86 # access to full branch history, or 'single+tags' when Google Code
87 # or a similar remote is used that does not support shallow clones
88 # and fetching tags along with commits. Please use sparingly, and to fix
89 # fatal errors rather than 'non-pretty versions'.
90 : ${EGIT_MIN_CLONE_TYPE:=shallow}
92 # @ECLASS-VARIABLE: EGIT3_STORE_DIR
94 # Storage directory for git sources.
96 # This is intended to be set by user in make.conf. Ebuilds must not set
99 # EGIT3_STORE_DIR=${DISTDIR}/git3-src
101 # @ECLASS-VARIABLE: EGIT_MIRROR_URI
104 # 'Top' URI to a local git mirror. If specified, the eclass will try
105 # to fetch from the local mirror instead of using the remote repository.
107 # The mirror needs to follow EGIT3_STORE_DIR structure. The directory
108 # created by eclass can be used for that purpose.
112 # EGIT_MIRROR_URI="git://mirror.lan/"
115 # @ECLASS-VARIABLE: EGIT_REPO_URI
118 # URIs to the repository, e.g. https://foo. If multiple URIs are
119 # provided, the eclass will consider the remaining URIs as fallbacks
120 # to try if the first URI does not work. For supported URI syntaxes,
121 # read the manpage for git-clone(1).
123 # URIs should be using https:// whenever possible. http:// and git://
124 # URIs are completely unsecured and their use (even if only as
125 # a fallback) renders the ebuild completely vulnerable to MITM attacks.
127 # Can be a whitespace-separated list or an array.
131 # EGIT_REPO_URI="https://a/b.git https://c/d.git"
134 # @ECLASS-VARIABLE: EVCS_OFFLINE
137 # If non-empty, this variable prevents any online operations.
139 # @ECLASS-VARIABLE: EVCS_UMASK
142 # Set this variable to a custom umask. This is intended to be set by
143 # users. By setting this to something like 002, it can make life easier
144 # for people who do development as non-root (but are in the portage
145 # group), and then switch over to building with FEATURES=userpriv.
146 # Or vice-versa. Shouldn't be a security issue here as anyone who has
147 # portage group write access already can screw the system over in more
150 # @ECLASS-VARIABLE: EGIT_BRANCH
153 # The branch name to check out. If unset, the upstream default (HEAD)
156 # @ECLASS-VARIABLE: EGIT_COMMIT
159 # The tag name or commit identifier to check out. If unset, newest
160 # commit from the branch will be used. Note that if set to a commit
161 # not on HEAD branch, EGIT_BRANCH needs to be set to a branch on which
162 # the commit is available.
164 # @ECLASS-VARIABLE: EGIT_COMMIT_DATE
167 # Attempt to check out the repository state for the specified timestamp.
168 # The date should be in format understood by 'git rev-list'. The commits
169 # on EGIT_BRANCH will be considered.
171 # The eclass will select the last commit with commit date preceding
172 # the specified date. When merge commits are found, only first parents
173 # will be considered in order to avoid switching into external branches
174 # (assuming that merges are done correctly). In other words, each merge
175 # will be considered alike a single commit with date corresponding
176 # to the merge commit date.
178 # @ECLASS-VARIABLE: EGIT_CHECKOUT_DIR
180 # The directory to check the git sources out to.
182 # EGIT_CHECKOUT_DIR=${WORKDIR}/${P}
184 # @ECLASS-VARIABLE: EGIT_SUBMODULES
187 # An array of inclusive and exclusive wildcards on submodule names,
188 # stating which submodules are fetched and checked out. Exclusions
189 # start with '-', and exclude previously matched submodules.
191 # If unset, all submodules are enabled. Empty list disables all
192 # submodules. In order to use an exclude-only list, start the array
195 # Remember that wildcards need to be quoted in order to prevent filename
200 # # Disable all submodules
203 # # Include only foo and bar
204 # EGIT_SUBMODULES=( foo bar )
206 # # Use all submodules except for test-* but include test-lib
207 # EGIT_SUBMODULES=( '*' '-test-*' test-lib )
210 # @FUNCTION: _git-r3_env_setup
213 # Set the eclass variables as necessary for operation. This can involve
214 # setting EGIT_* to defaults or ${PN}_LIVE_* variables.
215 _git-r3_env_setup() {
216 debug-print-function ${FUNCNAME} "$@"
218 # check the clone type
219 case "${EGIT_CLONE_TYPE}" in
220 mirror|single+tags|single|shallow)
223 die "Invalid EGIT_CLONE_TYPE=${EGIT_CLONE_TYPE}"
225 case "${EGIT_MIN_CLONE_TYPE}" in
229 if [[ ${EGIT_CLONE_TYPE} == shallow ]]; then
230 einfo "git-r3: ebuild needs to be cloned in '\e[1msingle\e[22m' mode, adjusting"
231 EGIT_CLONE_TYPE=single
235 if [[ ${EGIT_CLONE_TYPE} == shallow || ${EGIT_CLONE_TYPE} == single ]]; then
236 einfo "git-r3: ebuild needs to be cloned in '\e[1msingle+tags\e[22m' mode, adjusting"
237 EGIT_CLONE_TYPE=single+tags
241 if [[ ${EGIT_CLONE_TYPE} != mirror ]]; then
242 einfo "git-r3: ebuild needs to be cloned in '\e[1mmirror\e[22m' mode, adjusting"
243 EGIT_CLONE_TYPE=mirror
247 die "Invalid EGIT_MIN_CLONE_TYPE=${EGIT_MIN_CLONE_TYPE}"
250 if [[ ${EGIT_SUBMODULES[@]+1} && $(declare -p EGIT_SUBMODULES) != "declare -a"* ]]
252 die 'EGIT_SUBMODULES must be an array.'
257 [[ ${esc_pn} == [0-9]* ]] && esc_pn=_${esc_pn}
259 # note: deprecated, use EGIT_OVERRIDE_* instead
260 livevar=${esc_pn}_LIVE_REPO
261 EGIT_REPO_URI=${!livevar-${EGIT_REPO_URI}}
263 && ewarn "Using ${livevar}, no support will be provided"
265 livevar=${esc_pn}_LIVE_BRANCH
266 EGIT_BRANCH=${!livevar-${EGIT_BRANCH}}
268 && ewarn "Using ${livevar}, no support will be provided"
270 livevar=${esc_pn}_LIVE_COMMIT
271 EGIT_COMMIT=${!livevar-${EGIT_COMMIT}}
273 && ewarn "Using ${livevar}, no support will be provided"
275 livevar=${esc_pn}_LIVE_COMMIT_DATE
276 EGIT_COMMIT_DATE=${!livevar-${EGIT_COMMIT_DATE}}
278 && ewarn "Using ${livevar}, no support will be provided"
280 if [[ ${EGIT_COMMIT} && ${EGIT_COMMIT_DATE} ]]; then
281 die "EGIT_COMMIT and EGIT_COMMIT_DATE can not be specified simultaneously"
284 # Migration helpers. Remove them when git-2 is removed.
286 if [[ ${EGIT_SOURCEDIR} ]]; then
287 eerror "EGIT_SOURCEDIR has been replaced by EGIT_CHECKOUT_DIR. While updating"
288 eerror "your ebuild, please check whether the variable is necessary at all"
289 eerror "since the default has been changed from \${S} to \${WORKDIR}/\${P}."
290 eerror "Therefore, proper setting of S may be sufficient."
291 die "EGIT_SOURCEDIR has been replaced by EGIT_CHECKOUT_DIR."
294 if [[ ${EGIT_MASTER} ]]; then
295 eerror "EGIT_MASTER has been removed. Instead, the upstream default (HEAD)"
296 eerror "is used by the eclass. Please remove the assignment or use EGIT_BRANCH"
297 eerror "as necessary."
298 die "EGIT_MASTER has been removed."
301 if [[ ${EGIT_HAS_SUBMODULES} ]]; then
302 eerror "EGIT_HAS_SUBMODULES has been removed. The eclass no longer needs"
303 eerror "to switch the clone type in order to support submodules and therefore"
304 eerror "submodules are detected and fetched automatically. If you need to"
305 eerror "disable or filter submodules, see EGIT_SUBMODULES."
306 die "EGIT_HAS_SUBMODULES is no longer necessary."
309 if [[ ${EGIT_PROJECT} ]]; then
310 eerror "EGIT_PROJECT has been removed. Instead, the eclass determines"
311 eerror "the local clone path using path in canonical EGIT_REPO_URI."
312 eerror "If the current algorithm causes issues for you, please report a bug."
313 die "EGIT_PROJECT is no longer necessary."
316 if [[ ${EGIT_BOOTSTRAP} ]]; then
317 eerror "EGIT_BOOTSTRAP has been removed. Please create proper src_prepare()"
319 die "EGIT_BOOTSTRAP has been removed."
322 if [[ ${EGIT_NOUNPACK} ]]; then
323 eerror "EGIT_NOUNPACK has been removed. The eclass no longer calls default"
324 eerror "unpack function. If necessary, please declare proper src_unpack()."
325 die "EGIT_NOUNPACK has been removed."
329 # @FUNCTION: _git-r3_set_gitdir
333 # Obtain the local repository path and set it as GIT_DIR. Creates
334 # a new repository if necessary.
336 # <repo-uri> may be used to compose the path. It should therefore be
337 # a canonical URI to the repository.
338 _git-r3_set_gitdir() {
339 debug-print-function ${FUNCNAME} "$@"
341 local repo_name=${1#*://*/}
343 # strip the trailing slash
344 repo_name=${repo_name%/}
346 # strip common prefixes to make paths more likely to match
347 # e.g. git://X/Y.git vs https://X/git/Y.git
348 # (but just one of the prefixes)
349 case "${repo_name}" in
350 # gnome.org... who else?
351 browse/*) repo_name=${repo_name#browse/};;
352 # cgit can proxy requests to git
353 cgit/*) repo_name=${repo_name#cgit/};;
355 git/*) repo_name=${repo_name#git/};;
357 gitroot/*) repo_name=${repo_name#gitroot/};;
359 p/*) repo_name=${repo_name#p/};;
361 pub/scm/*) repo_name=${repo_name#pub/scm/};;
363 # ensure a .git suffix, same reason
364 repo_name=${repo_name%.git}.git
365 # now replace all the slashes
366 repo_name=${repo_name//\//_}
368 local distdir=${PORTAGE_ACTUAL_DISTDIR:-${DISTDIR}}
369 : ${EGIT3_STORE_DIR:=${distdir}/git3-src}
371 GIT_DIR=${EGIT3_STORE_DIR}/${repo_name}
373 if [[ ! -d ${EGIT3_STORE_DIR} && ! ${EVCS_OFFLINE} ]]; then
376 mkdir -p "${EGIT3_STORE_DIR}"
377 ) || die "Unable to create ${EGIT3_STORE_DIR}"
380 addwrite "${EGIT3_STORE_DIR}"
381 if [[ ! -d ${GIT_DIR} ]]; then
382 if [[ ${EVCS_OFFLINE} ]]; then
383 eerror "A clone of the following repository is required to proceed:"
385 eerror "However, networking activity has been disabled using EVCS_OFFLINE and there"
386 eerror "is no local clone available."
387 die "No local clone of ${1}. Unable to proceed with EVCS_OFFLINE."
391 if [[ ${EVCS_UMASK} ]]; then
393 umask "${EVCS_UMASK}" || die "Bad options to umask: ${EVCS_UMASK}"
395 mkdir "${GIT_DIR}" || die
396 git init --bare || die
397 if [[ ${saved_umask} ]]; then
398 umask "${saved_umask}" || die
403 # @FUNCTION: _git-r3_set_submodules
404 # @USAGE: <file-contents>
407 # Parse .gitmodules contents passed as <file-contents>
408 # as in "$(cat .gitmodules)"). Composes a 'submodules' array that
409 # contains in order (name, URL, path) for each submodule.
410 _git-r3_set_submodules() {
411 debug-print-function ${FUNCNAME} "$@"
415 # ( name url path ... )
420 # submodule.<path>.path=<path>
421 # submodule.<path>.url=<url>
422 [[ ${l} == submodule.*.url=* ]] || continue
425 local subname=${l%%.url=*}
427 # filter out on EGIT_SUBMODULES
428 if declare -p EGIT_SUBMODULES &>/dev/null; then
430 for p in "${EGIT_SUBMODULES[@]}"; do
431 if [[ ${p} == -* ]]; then
438 [[ ${subname} == ${p} ]] && res=${l_res}
441 if [[ ! ${res} ]]; then
442 einfo "Skipping submodule \e[1m${subname}\e[22m"
447 # skip modules that have 'update = none', bug #487262.
448 local upd=$(echo "${data}" | git config -f /dev/fd/0 \
449 submodule."${subname}".update)
450 [[ ${upd} == none ]] && continue
452 # https://github.com/git/git/blob/master/refs.c#L31
453 # we are more restrictive than git itself but that should not
454 # cause any issues, #572312, #606950
455 # TODO: check escaped names for collisions
456 local enc_subname=${subname//[^a-zA-Z0-9-]/_}
460 "$(echo "${data}" | git config -f /dev/fd/0 \
461 submodule."${subname}".url || die)"
462 "$(echo "${data}" | git config -f /dev/fd/0 \
463 submodule."${subname}".path || die)"
465 done < <(echo "${data}" | git config -f /dev/fd/0 -l || die)
468 # @FUNCTION: _git-r3_set_subrepos
469 # @USAGE: <submodule-uri> <parent-repo-uri>...
472 # Create 'subrepos' array containing absolute (canonical) submodule URIs
473 # for the given <submodule-uri>. If the URI is relative, URIs will be
474 # constructed using all <parent-repo-uri>s. Otherwise, this single URI
475 # will be placed in the array.
476 _git-r3_set_subrepos() {
477 debug-print-function ${FUNCNAME} "$@"
480 subrepos=( "${@:2}" )
482 if [[ ${suburl} == ./* || ${suburl} == ../* ]]; then
483 # drop all possible trailing slashes for consistency
484 subrepos=( "${subrepos[@]%%/}" )
487 if [[ ${suburl} == ./* ]]; then
489 elif [[ ${suburl} == ../* ]]; then
492 # XXX: correctness checking
494 # drop the last path component
495 subrepos=( "${subrepos[@]%/*}" )
496 # and then the trailing slashes, again
497 subrepos=( "${subrepos[@]%%/}" )
503 # append the preprocessed path to the preprocessed URIs
504 subrepos=( "${subrepos[@]/%//${suburl}}")
506 subrepos=( "${suburl}" )
511 # @FUNCTION: _git-r3_is_local_repo
515 # Determine whether the given URI specifies a local (on-disk)
517 _git-r3_is_local_repo() {
518 debug-print-function ${FUNCNAME} "$@"
522 [[ ${uri} == file://* || ${uri} == /* ]]
525 # @FUNCTION: git-r3_fetch
526 # @USAGE: [<repo-uri> [<remote-ref> [<local-id> [<commit-date>]]]]
528 # Fetch new commits to the local clone of repository.
530 # <repo-uri> specifies the repository URIs to fetch from, as a space-
531 # -separated list. The first URI will be used as repository group
532 # identifier and therefore must be used consistently. When not
533 # specified, defaults to ${EGIT_REPO_URI}.
535 # <remote-ref> specifies the remote ref or commit id to fetch.
536 # It is preferred to use 'refs/heads/<branch-name>' for branches
537 # and 'refs/tags/<tag-name>' for tags. Other options are 'HEAD'
538 # for upstream default branch and hexadecimal commit SHA1. Defaults
539 # to the first of EGIT_COMMIT, EGIT_BRANCH or literal 'HEAD' that
540 # is set to a non-null value.
542 # <local-id> specifies the local branch identifier that will be used to
543 # locally store the fetch result. It should be unique to multiple
544 # fetches within the repository that can be performed at the same time
545 # (including parallel merges). It defaults to ${CATEGORY}/${PN}/${SLOT%/*}.
546 # This default should be fine unless you are fetching multiple trees
547 # from the same repository in the same ebuild.
549 # <commit-id> requests attempting to use repository state as of specific
550 # date. For more details, see EGIT_COMMIT_DATE.
552 # The fetch operation will affect the EGIT_STORE only. It will not touch
553 # the working copy, nor export any environment variables.
554 # If the repository contains submodules, they will be fetched
557 debug-print-function ${FUNCNAME} "$@"
559 # process repos first since we create repo_name from it
563 elif [[ $(declare -p EGIT_REPO_URI) == "declare -a"* ]]; then
564 repos=( "${EGIT_REPO_URI[@]}" )
566 repos=( ${EGIT_REPO_URI} )
569 [[ ${repos[@]} ]] || die "No URI provided and EGIT_REPO_URI unset"
572 for r in "${repos[@]}"; do
573 if [[ ${r} == git:* || ${r} == http:* ]]; then
574 ewarn "git-r3: ${r%%:*} protocol is completely unsecure and may render the ebuild"
575 ewarn "easily susceptible to MITM attacks (even if used only as fallback). Please"
576 ewarn "use https instead."
582 _git-r3_set_gitdir "${repos[0]}"
584 einfo "Repository id: ${GIT_DIR##*/}"
586 # prepend the local mirror if applicable
587 if [[ ${EGIT_MIRROR_URI} ]]; then
589 "${EGIT_MIRROR_URI%/}/${GIT_DIR##*/}"
594 # get the default values for the common variables and override them
595 local branch_name=${EGIT_BRANCH}
596 local commit_id=${2:-${EGIT_COMMIT}}
597 local commit_date=${4:-${EGIT_COMMIT_DATE}}
599 # support new override API for EAPI 6+
600 if ! has "${EAPI:-0}" 0 1 2 3 4 5; then
601 # get the name and do some more processing:
602 # 1) kill .git suffix,
603 # 2) underscore (remaining) non-variable characters,
604 # 3) add preceding underscore if it starts with a digit,
606 local override_name=${GIT_DIR##*/}
607 override_name=${override_name%.git}
608 override_name=${override_name//[^a-zA-Z0-9_]/_}
609 override_name=${override_name^^}
615 COMMIT_DATE:commit_date
618 local localvar livevar live_warn= override_vars=()
619 for localvar in "${varmap[@]}"; do
620 livevar=EGIT_OVERRIDE_${localvar%:*}_${override_name}
621 localvar=${localvar#*:}
622 override_vars+=( "${livevar}" )
624 if [[ -n ${!livevar} ]]; then
625 [[ ${localvar} == repos ]] && repos=()
627 ewarn "Using ${livevar}=${!livevar}"
628 declare "${localvar}=${!livevar}"
632 if [[ ${live_warn} ]]; then
633 ewarn "No support will be provided."
635 einfo "To override fetched repository properties, use:"
637 for x in "${override_vars[@]}"; do
644 # set final variables after applying overrides
645 local branch=${branch_name:+refs/heads/${branch_name}}
646 local remote_ref=${commit_id:-${branch:-HEAD}}
647 local local_id=${3:-${CATEGORY}/${PN}/${SLOT%/*}}
648 local local_ref=refs/git-r3/${local_id}/__main__
650 # try to fetch from the remote
651 local success saved_umask
652 if [[ ${EVCS_UMASK} ]]; then
654 umask "${EVCS_UMASK}" || die "Bad options to umask: ${EVCS_UMASK}"
656 for r in "${repos[@]}"; do
657 if [[ ! ${EVCS_OFFLINE} ]]; then
658 einfo "Fetching \e[1m${r}\e[22m ..."
660 local fetch_command=( git fetch "${r}" )
661 local clone_type=${EGIT_CLONE_TYPE}
663 if [[ ${clone_type} == mirror ]]; then
666 # mirror the remote branches as local branches
667 "+refs/heads/*:refs/heads/*"
668 # pull tags explicitly in order to prune them properly
669 "+refs/tags/*:refs/tags/*"
670 # notes in case something needs them
671 "+refs/notes/*:refs/notes/*"
672 # and HEAD in case we need the default branch
673 # (we keep it in refs/git-r3 since otherwise --prune interferes)
674 "+HEAD:refs/git-r3/HEAD"
676 else # single or shallow
677 local fetch_l fetch_r
679 if [[ ${remote_ref} == HEAD ]]; then
682 elif [[ ${remote_ref} == refs/* ]]; then
683 # regular branch, tag or some other explicit ref
684 fetch_l=${remote_ref}
686 # tag or commit id...
687 # let ls-remote figure it out
688 local tagref=$(git ls-remote "${r}" "refs/tags/${remote_ref}")
690 # if it was a tag, ls-remote obtained a hash
691 if [[ ${tagref} ]]; then
693 fetch_l=refs/tags/${remote_ref}
696 # so we need to fetch the whole branch
697 if [[ ${branch} ]]; then
703 # fetching by commit in shallow mode? can't do.
704 if [[ ${clone_type} == shallow ]]; then
710 # checkout by date does not make sense in shallow mode
711 if [[ ${commit_date} && ${clone_type} == shallow ]]; then
715 if [[ ${fetch_l} == HEAD ]]; then
716 fetch_r=refs/git-r3/HEAD
722 "+${fetch_l}:${fetch_r}"
725 if [[ ${clone_type} == single+tags ]]; then
727 # pull tags explicitly as requested
728 "+refs/tags/*:refs/tags/*"
733 if [[ ${clone_type} == shallow ]]; then
734 if _git-r3_is_local_repo; then
735 # '--depth 1' causes sandbox violations with local repos
738 elif [[ ! $(git rev-parse --quiet --verify "${fetch_r}") ]]
740 # use '--depth 1' when fetching a new branch
741 fetch_command+=( --depth 1 )
743 else # non-shallow mode
744 if [[ -f ${GIT_DIR}/shallow ]]; then
745 fetch_command+=( --unshallow )
749 set -- "${fetch_command[@]}"
753 if [[ ${clone_type} == mirror || ${fetch_l} == HEAD ]]; then
754 # update our HEAD to match our remote HEAD ref
755 git symbolic-ref HEAD refs/git-r3/HEAD \
756 || die "Unable to update HEAD"
760 # now let's see what the user wants from us
761 if [[ ${commit_date} ]]; then
762 local dated_commit_id=$(
763 git rev-list --first-parent --before="${commit_date}" \
766 if [[ ${?} -ne 0 ]]; then
767 die "Listing ${remote_ref} failed (wrong ref?)."
768 elif [[ ! ${dated_commit_id} ]]; then
769 die "Unable to find commit for date ${commit_date}."
771 set -- git update-ref --no-deref "${local_ref}" "${dated_commit_id}"
774 local full_remote_ref=$(
775 git rev-parse --verify --symbolic-full-name "${remote_ref}"
778 if [[ ${full_remote_ref} ]]; then
779 # when we are given a ref, create a symbolic ref
780 # so that we preserve the actual argument
781 set -- git symbolic-ref "${local_ref}" "${full_remote_ref}"
783 # otherwise, we were likely given a commit id
784 set -- git update-ref --no-deref "${local_ref}" "${remote_ref}"
790 if [[ ${EVCS_OFFLINE} ]]; then
791 eerror "A clone of the following repository is required to proceed:"
793 eerror "However, networking activity has been disabled using EVCS_OFFLINE and the local"
794 eerror "clone does not have requested ref:"
795 eerror " ${remote_ref}"
796 die "Local clone of ${r} does not have requested ref: ${remote_ref}. Unable to proceed with EVCS_OFFLINE."
798 die "Referencing ${remote_ref} failed (wrong ref?)."
805 if [[ ${saved_umask} ]]; then
806 umask "${saved_umask}" || die
808 [[ ${success} ]] || die "Unable to fetch from any of EGIT_REPO_URI"
810 # submodules can reference commits in any branch
811 # always use the 'mirror' mode to accomodate that, bug #503332
812 local EGIT_CLONE_TYPE=mirror
814 # recursively fetch submodules
815 if git cat-file -e "${local_ref}":.gitmodules &>/dev/null; then
817 _git-r3_set_submodules \
818 "$(git cat-file -p "${local_ref}":.gitmodules || die)"
820 while [[ ${submodules[@]} ]]; do
821 local subname=${submodules[0]}
822 local url=${submodules[1]}
823 local path=${submodules[2]}
825 # use only submodules for which path does exist
826 # (this is in par with 'git submodule'), bug #551100
827 # note: git cat-file does not work for submodules
828 if [[ $(git ls-tree -d "${local_ref}" "${path}") ]]
830 local commit=$(git rev-parse "${local_ref}:${path}" || die)
832 if [[ ! ${commit} ]]; then
833 die "Unable to get commit id for submodule ${subname}"
837 _git-r3_set_subrepos "${url}" "${repos[@]}"
839 git-r3_fetch "${subrepos[*]}" "${commit}" "${local_id}/${subname}"
842 submodules=( "${submodules[@]:3}" ) # shift
847 # @FUNCTION: git-r3_checkout
848 # @USAGE: [<repo-uri> [<checkout-path> [<local-id> [<checkout-paths>...]]]]
850 # Check the previously fetched tree to the working copy.
852 # <repo-uri> specifies the repository URIs, as a space-separated list.
853 # The first URI will be used as repository group identifier
854 # and therefore must be used consistently with git-r3_fetch.
855 # The remaining URIs are not used and therefore may be omitted.
856 # When not specified, defaults to ${EGIT_REPO_URI}.
858 # <checkout-path> specifies the path to place the checkout. It defaults
859 # to ${EGIT_CHECKOUT_DIR} if set, otherwise to ${WORKDIR}/${P}.
861 # <local-id> needs to specify the local identifier that was used
862 # for respective git-r3_fetch.
864 # If <checkout-paths> are specified, then the specified paths are passed
865 # to 'git checkout' to effect a partial checkout. Please note that such
866 # checkout will not cause the repository to switch branches,
867 # and submodules will be skipped at the moment. The submodules matching
868 # those paths might be checked out in a future version of the eclass.
870 # The checkout operation will write to the working copy, and export
871 # the repository state into the environment. If the repository contains
872 # submodules, they will be checked out recursively.
874 debug-print-function ${FUNCNAME} "$@"
879 elif [[ $(declare -p EGIT_REPO_URI) == "declare -a"* ]]; then
880 repos=( "${EGIT_REPO_URI[@]}" )
882 repos=( ${EGIT_REPO_URI} )
885 local out_dir=${2:-${EGIT_CHECKOUT_DIR:-${WORKDIR}/${P}}}
886 local local_id=${3:-${CATEGORY}/${PN}/${SLOT%/*}}
887 local checkout_paths=( "${@:4}" )
890 _git-r3_set_gitdir "${repos[0]}"
892 einfo "Checking out \e[1m${repos[0]}\e[22m to \e[1m${out_dir}\e[22m ..."
894 if ! git cat-file -e refs/git-r3/"${local_id}"/__main__; then
895 die "Logic error: no local clone of ${repos[0]}. git-r3_fetch not used?"
898 git symbolic-ref --quiet refs/git-r3/"${local_id}"/__main__
900 local new_commit_id=$(
901 git rev-parse --verify refs/git-r3/"${local_id}"/__main__
904 git-r3_sub_checkout() {
905 local orig_repo=${GIT_DIR}
906 local -x GIT_DIR=${out_dir}/.git
907 local -x GIT_WORK_TREE=${out_dir}
909 mkdir -p "${out_dir}" || die
911 # use git init+fetch instead of clone since the latter doesn't like
912 # non-empty directories.
914 git init --quiet || die
915 # setup 'alternates' to avoid copying objects
916 echo "${orig_repo}/objects" > "${GIT_DIR}"/objects/info/alternates || die
918 cp -R "${orig_repo}"/refs/* "${GIT_DIR}"/refs/ || die
919 if [[ -f ${orig_repo}/packed-refs ]]; then
920 cp "${orig_repo}"/packed-refs "${GIT_DIR}"/packed-refs || die
923 # (no need to copy HEAD, we will set it via checkout)
925 if [[ -f ${orig_repo}/shallow ]]; then
926 cp "${orig_repo}"/shallow "${GIT_DIR}"/ || die
929 set -- git checkout --quiet
930 if [[ ${remote_ref} ]]; then
931 set -- "${@}" "${remote_ref#refs/heads/}"
933 set -- "${@}" "${new_commit_id}"
935 if [[ ${checkout_paths[@]} ]]; then
936 set -- "${@}" -- "${checkout_paths[@]}"
939 "${@}" || die "git checkout ${remote_ref:-${new_commit_id}} failed"
942 unset -f git-r3_sub_checkout
944 local old_commit_id=$(
945 git rev-parse --quiet --verify refs/git-r3/"${local_id}"/__old__
947 if [[ ! ${old_commit_id} ]]; then
948 echo "GIT NEW branch -->"
949 echo " repository: ${repos[0]}"
950 echo " at the commit: ${new_commit_id}"
952 # diff against previous revision
953 echo "GIT update -->"
954 echo " repository: ${repos[0]}"
955 # write out message based on the revisions
956 if [[ "${old_commit_id}" != "${new_commit_id}" ]]; then
957 echo " updating from commit: ${old_commit_id}"
958 echo " to commit: ${new_commit_id}"
960 set -- git --no-pager diff --stat \
961 ${old_commit_id}..${new_commit_id}
962 if [[ ${checkout_paths[@]} ]]; then
963 set -- "${@}" -- "${checkout_paths[@]}"
967 echo " at the commit: ${new_commit_id}"
970 git update-ref --no-deref refs/git-r3/"${local_id}"/{__old__,__main__} || die
972 # recursively checkout submodules
973 if [[ -f ${out_dir}/.gitmodules && ! ${checkout_paths} ]]; then
975 _git-r3_set_submodules \
976 "$(<"${out_dir}"/.gitmodules)"
978 while [[ ${submodules[@]} ]]; do
979 local subname=${submodules[0]}
980 local url=${submodules[1]}
981 local path=${submodules[2]}
983 # use only submodules for which path does exist
984 # (this is in par with 'git submodule'), bug #551100
985 if [[ -d ${out_dir}/${path} ]]; then
987 _git-r3_set_subrepos "${url}" "${repos[@]}"
989 git-r3_checkout "${subrepos[*]}" "${out_dir}/${path}" \
990 "${local_id}/${subname}"
993 submodules=( "${submodules[@]:3}" ) # shift
997 # keep this *after* submodules
998 export EGIT_DIR=${GIT_DIR}
999 export EGIT_VERSION=${new_commit_id}
1002 # @FUNCTION: git-r3_peek_remote_ref
1003 # @USAGE: [<repo-uri> [<remote-ref>]]
1005 # Peek the reference in the remote repository and print the matching
1006 # (newest) commit SHA1.
1008 # <repo-uri> specifies the repository URIs to fetch from, as a space-
1009 # -separated list. When not specified, defaults to ${EGIT_REPO_URI}.
1011 # <remote-ref> specifies the remote ref to peek. It is preferred to use
1012 # 'refs/heads/<branch-name>' for branches and 'refs/tags/<tag-name>'
1013 # for tags. Alternatively, 'HEAD' may be used for upstream default
1014 # branch. Defaults to the first of EGIT_COMMIT, EGIT_BRANCH or literal
1015 # 'HEAD' that is set to a non-null value.
1017 # The operation will be done purely on the remote, without using local
1018 # storage. If commit SHA1 is provided as <remote-ref>, the function will
1019 # fail due to limitations of git protocol.
1021 # On success, the function returns 0 and writes hexadecimal commit SHA1
1022 # to stdout. On failure, the function returns 1.
1023 git-r3_peek_remote_ref() {
1024 debug-print-function ${FUNCNAME} "$@"
1029 elif [[ $(declare -p EGIT_REPO_URI) == "declare -a"* ]]; then
1030 repos=( "${EGIT_REPO_URI[@]}" )
1032 repos=( ${EGIT_REPO_URI} )
1035 local branch=${EGIT_BRANCH:+refs/heads/${EGIT_BRANCH}}
1036 local remote_ref=${2:-${EGIT_COMMIT:-${branch:-HEAD}}}
1038 [[ ${repos[@]} ]] || die "No URI provided and EGIT_REPO_URI unset"
1041 for r in "${repos[@]}"; do
1042 einfo "Peeking \e[1m${remote_ref}\e[22m on \e[1m${r}\e[22m ..." >&2
1045 if [[ ${remote_ref} == refs/* || ${remote_ref} == HEAD ]]
1047 lookup_ref=${remote_ref}
1049 # ls-remote by commit is going to fail anyway,
1050 # so we may as well pass refs/tags/ABCDEF...
1051 lookup_ref=refs/tags/${remote_ref}
1054 # split on whitespace
1056 $(git ls-remote "${r}" "${lookup_ref}")
1059 if [[ ${ref[0]} ]]; then
1068 git-r3_src_fetch() {
1069 debug-print-function ${FUNCNAME} "$@"
1071 if [[ ! ${EGIT3_STORE_DIR} && ${EGIT_STORE_DIR} ]]; then
1072 ewarn "You have set EGIT_STORE_DIR but not EGIT3_STORE_DIR. Please consider"
1073 ewarn "setting EGIT3_STORE_DIR for git-r3.eclass. It is recommended to use"
1074 ewarn "a different directory than EGIT_STORE_DIR to ease removing old clones"
1075 ewarn "when git-2 eclass becomes deprecated."
1082 git-r3_src_unpack() {
1083 debug-print-function ${FUNCNAME} "$@"
1090 # https://bugs.gentoo.org/show_bug.cgi?id=482666
1091 git-r3_pkg_needrebuild() {
1092 debug-print-function ${FUNCNAME} "$@"
1094 local new_commit_id=$(git-r3_peek_remote_ref)
1095 [[ ${new_commit_id} && ${EGIT_VERSION} ]] || die "Lookup failed"
1097 if [[ ${EGIT_VERSION} != ${new_commit_id} ]]; then
1098 einfo "Update from \e[1m${EGIT_VERSION}\e[22m to \e[1m${new_commit_id}\e[22m"
1100 einfo "Local and remote at \e[1m${EGIT_VERSION}\e[22m"
1103 [[ ${EGIT_VERSION} != ${new_commit_id} ]]
1106 # 'export' locally until this gets into EAPI
1107 pkg_needrebuild() { git-r3_pkg_needrebuild; }