# Copyright 1999-2015 Gentoo Foundation # Distributed under the terms of the GNU General Public License v2 # @ECLASS: golang-vcs-snapshot.eclass # @MAINTAINER: # William Hubbs <williamh@gentoo.org> # @BLURB: support eclass for unpacking VCS snapshot tarballs for # software written in the Go programming language # @DESCRIPTION: # This eclass provides a convenience src_unpack() which unpacks the # first tarball mentioned in SRC_URI to its appropriate location in # ${WORKDIR}/${P}, treating ${WORKDIR}/${P} as a go workspace. # Also, it provides a downstream method of vendoring packages. # # The location where the tarball is extracted is defined as # ${WORKDIR}/${P}/src/${EGO_PN}. The location of vendored packages is # defined as ${WORKDIR}/${P}/src/${EGO_PN%/*}/vendor to match Go's # vendoring setup. # # The typical use case is VCS snapshots coming from github, bitbucket # and similar services. # # Please note that this eclass currently handles only tarballs # (.tar.gz), but support for more formats may be added in the future. # # @EXAMPLE: # # @CODE # EGO_PN=github.com/user/package # EGO_VENDOR=( # "github.com/xenolf/lego 6cac0ea7d8b28c889f709ec7fa92e92b82f490dd" # "golang.org/x/crypto 453249f01cfeb54c3d549ddb75ff152ca243f9d8 github.com/golang/crypto" # ) # # inherit golang-vcs-snapshot # # SRC_URI="https://github.com/example/${PN}/tarball/v${PV} -> ${P}.tar.gz # ${EGO_VENDOR_URI}" # @CODE # # The above example will extract the tarball to # ${WORKDIR}/${P}/src/github.com/user/package # and add the vendored tarballs to ${WORKDIR}/src/${EGO_PN}/vendor inherit golang-base case ${EAPI:-0} in 5|6) ;; *) die "${ECLASS} API in EAPI ${EAPI} not yet established." esac EXPORT_FUNCTIONS src_unpack # @ECLASS-VARIABLE: EGO_VENDOR # @DESCRIPTION: # This variable contains a list of vendored packages. # The items of this array are strings that contain the # import path and the git commit hash for a vendored package. # If the import path does not start with github.com, the third argument # can be used to point to a github repository. declare -arg EGO_VENDOR _golang-vcs-snapshot_set_vendor_uri() { EGO_VENDOR_URI= local lib for lib in "${EGO_VENDOR[@]}"; do lib=(${lib}) if [[ -n ${lib[2]} ]]; then EGO_VENDOR_URI+=" https://${lib[2]}/archive/${lib[1]}.tar.gz -> ${lib[2]//\//-}-${lib[1]}.tar.gz" else EGO_VENDOR_URI+=" https://${lib[0]}/archive/${lib[1]}.tar.gz -> ${lib[0]//\//-}-${lib[1]}.tar.gz" fi done readonly EGO_VENDOR_URI } _golang-vcs-snapshot_set_vendor_uri unset -f _golang-vcs-snapshot_set_vendor_uri _golang-vcs-snapshot_dovendor() { local VENDOR_PATH=$1 VENDORPN=$2 TARBALL=$3 rm -fr "${VENDOR_PATH}/${VENDORPN}" || die mkdir -p "${VENDOR_PATH}/${VENDORPN}" || die tar -C "${VENDOR_PATH}/${VENDORPN}" -x --strip-components 1\ -f "${DISTDIR}"/${TARBALL} || die } # @FUNCTION: golang-vcs-snapshot_src_unpack # @DESCRIPTION: # Extract the first archive from ${A} to the appropriate location for GOPATH. golang-vcs-snapshot_src_unpack() { local lib vendor_path x ego_pn_check set -- ${A} x="$1" mkdir -p "${WORKDIR}/${P}/src/${EGO_PN%/...}" || die tar -C "${WORKDIR}/${P}/src/${EGO_PN%/...}" -x --strip-components 1 \ -f "${DISTDIR}/${x}" || die if [[ -n "${EGO_VENDOR}" ]]; then vendor_path="${WORKDIR}/${P}/src/${EGO_PN%/...}/vendor" mkdir -p "${vendor_path}" || die for lib in "${EGO_VENDOR[@]}"; do lib=(${lib}) if [[ -n ${lib[2]} ]]; then einfo "Vendoring ${lib[0]} ${lib[2]//\//-}-${lib[1]}.tar.gz" _golang-vcs-snapshot_dovendor "${vendor_path}" ${lib[0]} \ ${lib[2]//\//-}-${lib[1]}.tar.gz else einfo "Vendoring ${lib[0]} ${lib[0]//\//-}-${lib[1]}.tar.gz" _golang-vcs-snapshot_dovendor "${vendor_path}" ${lib[0]} \ ${lib[0]//\//-}-${lib[1]}.tar.gz fi done fi }