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gentoo-overlay/eclass/ruby-fakegem.eclass

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# Copyright 1999-2018 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# @ECLASS: ruby-fakegem.eclass
# @MAINTAINER:
# Ruby herd <ruby@gentoo.org>
# @AUTHOR:
# Author: Diego E. Pettenò <flameeyes@gentoo.org>
# Author: Alex Legler <a3li@gentoo.org>
# @BLURB: An eclass for installing Ruby packages to behave like RubyGems.
# @DESCRIPTION:
# This eclass allows to install arbitrary Ruby libraries (including Gems),
# providing integration into the RubyGems system even for "regular" packages.
inherit ruby-ng
# @ECLASS-VARIABLE: RUBY_FAKEGEM_NAME
# @DESCRIPTION:
# Sets the Gem name for the generated fake gemspec.
# This variable MUST be set before inheriting the eclass.
RUBY_FAKEGEM_NAME="${RUBY_FAKEGEM_NAME:-${PN}}"
# @ECLASS-VARIABLE: RUBY_FAKEGEM_VERSION
# @DESCRIPTION:
# Sets the Gem version for the generated fake gemspec.
# This variable MUST be set before inheriting the eclass.
RUBY_FAKEGEM_VERSION="${RUBY_FAKEGEM_VERSION:-${PV/_pre/.pre}}"
# @ECLASS-VARIABLE: RUBY_FAKEGEM_TASK_DOC
# @DESCRIPTION:
# Specify the rake(1) task to run to generate documentation.
RUBY_FAKEGEM_TASK_DOC="${RUBY_FAKEGEM_TASK_DOC-rdoc}"
# @ECLASS-VARIABLE: RUBY_FAKEGEM_RECIPE_TEST
# @DESCRIPTION:
# Specify one of the default testing function for ruby-fakegem:
# - rake (default; see also RUBY_FAKEGEM_TASK_TEST)
# - rspec (calls ruby-ng_rspec, adds dev-ruby/rspec:2 to the dependencies)
# - rspec3 (calls ruby-ng_rspec, adds dev-ruby/rspec:3 to the dependencies)
# - cucumber (calls ruby-ng_cucumber, adds dev-util/cucumber to the
# dependencies; does not work on JRuby).
# - none
RUBY_FAKEGEM_RECIPE_TEST="${RUBY_FAKEGEM_RECIPE_TEST-rake}"
# @ECLASS-VARIABLE: RUBY_FAKEGEM_TASK_TEST
# @DESCRIPTION:
# Specify the rake(1) task used for executing tests. Only valid
# if RUBY_FAKEGEM_RECIPE_TEST is set to "rake" (the default).
RUBY_FAKEGEM_TASK_TEST="${RUBY_FAKEGEM_TASK_TEST-test}"
# @ECLASS-VARIABLE: RUBY_FAKEGEM_RECIPE_DOC
# @DESCRIPTION:
# Specify one of the default API doc building function for ruby-fakegem:
# - rake (default; see also RUBY_FAKEGEM_TASK_DOC)
# - rdoc (calls `rdoc-2`, adds dev-ruby/rdoc to the dependencies);
# - yard (calls `yard`, adds dev-ruby/yard to the dependencies);
# - none
RUBY_FAKEGEM_RECIPE_DOC="${RUBY_FAKEGEM_RECIPE_DOC-rake}"
# @ECLASS-VARIABLE: RUBY_FAKEGEM_DOCDIR
# @DEFAULT_UNSET
# @DESCRIPTION:
# Specify the directory under which the documentation is built;
# if empty no documentation will be installed automatically.
# Note: if RUBY_FAKEGEM_RECIPE_DOC is set to `rdoc`, this variable is
# hardwired to `doc`.
# @ECLASS-VARIABLE: RUBY_FAKEGEM_EXTRADOC
# @DEFAULT_UNSET
# @DESCRIPTION:
# Extra documentation to install (readme, changelogs, …).
# @ECLASS-VARIABLE: RUBY_FAKEGEM_DOC_SOURCES
# @DESCRIPTION:
# Allow settings defined sources to scan for documentation.
# This only applies if RUBY_FAKEGEM_DOC_TASK is set to `rdoc`.
RUBY_FAKEGEM_DOC_SOURCES="${RUBY_FAKEGEM_DOC_SOURCES-lib}"
# @ECLASS-VARIABLE: RUBY_FAKEGEM_BINWRAP
# @DESCRIPTION:
# Binaries to wrap around (relative to the RUBY_FAKEGEM_BINDIR directory)
RUBY_FAKEGEM_BINWRAP="${RUBY_FAKEGEM_BINWRAP-*}"
# @ECLASS-VARIABLE: RUBY_FAKEGEM_BINDIR
# @DESCRIPTION:
# Path that contains binaries to be binwrapped. Equivalent to the
# gemspec bindir option.
RUBY_FAKEGEM_BINDIR="${RUBY_FAKEGEM_BINDIR-bin}"
# @ECLASS-VARIABLE: RUBY_FAKEGEM_REQUIRE_PATHS
# @DEFAULT_UNSET
# @DESCRIPTION:
# Extra require paths (beside lib) to add to the specification
# @ECLASS-VARIABLE: RUBY_FAKEGEM_GEMSPEC
# @DEFAULT_UNSET
# @DESCRIPTION:
# Filename of .gemspec file to install instead of generating a generic one.
# @ECLASS-VARIABLE: RUBY_FAKEGEM_EXTRAINSTALL
# @DEFAULT_UNSET
# @DESCRIPTION:
# List of files and directories relative to the top directory that also
# get installed. Some gems provide extra files such as version information,
# Rails generators, or data that needs to be installed as well.
case "${EAPI:-0}" in
0|1|2|3|4|5|6)
;;
*)
die "Unsupported EAPI=${EAPI} (unknown) for ${ECLASS}"
;;
esac
RUBY_FAKEGEM_SUFFIX="${RUBY_FAKEGEM_SUFFIX:-}"
[[ ${RUBY_FAKEGEM_TASK_DOC} == "" ]] && RUBY_FAKEGEM_RECIPE_DOC="none"
case ${RUBY_FAKEGEM_RECIPE_DOC} in
rake)
IUSE+=" doc"
ruby_add_bdepend "doc? ( dev-ruby/rake )"
RUBY_FAKEGEM_DOCDIR="doc"
;;
rdoc)
IUSE+=" doc"
ruby_add_bdepend "doc? ( dev-ruby/rdoc )"
RUBY_FAKEGEM_DOCDIR="doc"
;;
yard)
IUSE+="doc"
ruby_add_bdepend "doc? ( dev-ruby/yard )"
RUBY_FAKEGEM_DOCDIR="doc"
;;
none)
[[ -n ${RUBY_FAKEGEM_DOCDIR} ]] && IUSE+=" doc"
;;
esac
[[ ${RUBY_FAKEGEM_TASK_TEST} == "" ]] && RUBY_FAKEGEM_RECIPE_TEST="none"
case ${RUBY_FAKEGEM_RECIPE_TEST} in
rake)
IUSE+=" test"
ruby_add_bdepend "test? ( dev-ruby/rake )"
;;
rspec)
IUSE+=" test"
# Also require a new enough rspec-core version that installs the
# rspec-2 wrapper.
ruby_add_bdepend "test? ( dev-ruby/rspec:2 >=dev-ruby/rspec-core-2.14.8-r2 )"
;;
rspec3)
IUSE+=" test"
ruby_add_bdepend "test? ( dev-ruby/rspec:3 )"
;;
cucumber)
IUSE+=" test"
# Unfortunately as of August 2012, cucumber is not supported on
# JRuby. We work it around here to avoid repeating the same
# code over and over again.
USE_RUBY="${USE_RUBY/jruby/}" ruby_add_bdepend "test? ( dev-util/cucumber )"
;;
*)
RUBY_FAKEGEM_RECIPE_TEST="none"
;;
esac
SRC_URI="mirror://rubygems/${RUBY_FAKEGEM_NAME}-${RUBY_FAKEGEM_VERSION}${RUBY_FAKEGEM_SUFFIX:+-${RUBY_FAKEGEM_SUFFIX}}.gem"
ruby_add_bdepend virtual/rubygems
ruby_add_rdepend virtual/rubygems
# @FUNCTION: ruby_fakegem_gemsdir
# @RETURN: Returns the gem data directory
# @DESCRIPTION:
# This function returns the gems data directory for the ruby
# implementation in question.
ruby_fakegem_gemsdir() {
has "${EAPI}" 2 && ! use prefix && EPREFIX=
local _gemsitedir=$(ruby_rbconfig_value 'sitelibdir')
_gemsitedir=${_gemsitedir//site_ruby/gems}
_gemsitedir=${_gemsitedir#${EPREFIX}}
[[ -z ${_gemsitedir} ]] && {
eerror "Unable to find the gems dir"
die "Unable to find the gems dir"
}
echo "${_gemsitedir}"
}
# @FUNCTION: ruby_fakegem_doins
# @USAGE: file [file...]
# @DESCRIPTION:
# Installs the specified file(s) into the gems directory.
ruby_fakegem_doins() {
(
insinto $(ruby_fakegem_gemsdir)/gems/${RUBY_FAKEGEM_NAME}-${RUBY_FAKEGEM_VERSION}
doins "$@"
) || die "failed $0 $@"
}
# @FUNCTION: ruby_fakegem_newsins
# @USAGE: file filename
# @DESCRIPTION:
# Installs the specified file into the gems directory using the provided filename.
ruby_fakegem_newins() {
(
# Since newins does not accept full paths but just basenames
# for the target file, we want to extend it here.
local newdirname=/$(dirname "$2")
[[ ${newdirname} == "/." ]] && newdirname=
local newbasename=$(basename "$2")
insinto $(ruby_fakegem_gemsdir)/gems/${RUBY_FAKEGEM_NAME}-${RUBY_FAKEGEM_VERSION}${newdirname}
newins "$1" ${newbasename}
) || die "failed $0 $@"
}
# @FUNCTION: ruby_fakegem_install_gemspec
# @DESCRIPTION:
# Install a .gemspec file for this package. Either use the file indicated
# by the RUBY_FAKEGEM_GEMSPEC variable, or generate one using
# ruby_fakegem_genspec.
ruby_fakegem_install_gemspec() {
local gemspec="${T}"/${RUBY_FAKEGEM_NAME}-${_ruby_implementation}
(
if [[ ${RUBY_FAKEGEM_GEMSPEC} != "" ]]; then
ruby_fakegem_gemspec_gemspec ${RUBY_FAKEGEM_GEMSPEC} ${gemspec}
else
local metadata="${WORKDIR}"/${_ruby_implementation}/metadata
if [[ -e ${metadata} ]]; then
ruby_fakegem_metadata_gemspec ${metadata} ${gemspec}
else
ruby_fakegem_genspec ${gemspec}
fi
fi
) || die "Unable to generate gemspec file."
insinto $(ruby_fakegem_gemsdir)/specifications
newins ${gemspec} ${RUBY_FAKEGEM_NAME}-${RUBY_FAKEGEM_VERSION}.gemspec || die "Unable to install gemspec file."
}
# @FUNCTION: ruby_fakegem_gemspec_gemspec
# @USAGE: gemspec-input gemspec-output
# @DESCRIPTION:
# Generates an installable version of the specification indicated by
# RUBY_FAKEGEM_GEMSPEC. This file is eval'ed to produce a final specification
# in a way similar to packaging the gemspec file.
ruby_fakegem_gemspec_gemspec() {
${RUBY} -e "puts eval(File::open('$1').read).to_ruby" > $2
}
# @FUNCTION: ruby_fakegem_metadata_gemspec
# @USAGE: gemspec-metadata gemspec-output
# @DESCRIPTION:
# Generates an installable version of the specification indicated by
# the metadata distributed by the gem itself. This is similar to how
# rubygems creates an installation from a .gem file.
ruby_fakegem_metadata_gemspec() {
case ${RUBY} in
*jruby)
${RUBY} -r yaml -e "puts Gem::Specification.from_yaml(File::open('$1').read).to_ruby" > $2
;;
*)
${RUBY} -r yaml -e "puts Gem::Specification.from_yaml(File::open('$1', :encoding => 'UTF-8').read).to_ruby" > $2
;;
esac
}
# @FUNCTION: ruby_fakegem_genspec
# @USAGE: output-gemspec
# @DESCRIPTION:
# Generates a gemspec for the package and places it into the "specifications"
# directory of RubyGems.
# If the metadata normally distributed with a gem is present then that is
# used to generate the gemspec file.
#
# As a fallback we can generate our own version.
# In the gemspec, the following values are set: name, version, summary,
# homepage, and require_paths=["lib"].
# See RUBY_FAKEGEM_NAME and RUBY_FAKEGEM_VERSION for setting name and version.
# See RUBY_FAKEGEM_REQUIRE_PATHS for setting extra require paths.
ruby_fakegem_genspec() {
local required_paths="'lib'"
for path in ${RUBY_FAKEGEM_REQUIRE_PATHS}; do
required_paths="${required_paths}, '${path}'"
done
# We use the _ruby_implementation variable to avoid having stray
# copies with different implementations; while for now we're using
# the same exact content, we might have differences in the future,
# so better taking this into consideration.
local quoted_description=${DESCRIPTION//\"/\\\"}
cat - > $1 <<EOF
# generated by ruby-fakegem.eclass
Gem::Specification.new do |s|
s.name = "${RUBY_FAKEGEM_NAME}"
s.version = "${RUBY_FAKEGEM_VERSION}"
s.summary = "${quoted_description}"
s.homepage = "${HOMEPAGE}"
s.require_paths = [${required_paths}]
end
EOF
}
# @FUNCTION: ruby_fakegem_binwrapper
# @USAGE: command [path] [content]
# @DESCRIPTION:
# Creates a new binary wrapper for a command installed by the RubyGem.
# path defaults to /usr/bin/$command content is optional and can be used
# to inject additional ruby code into the wrapper. This may be useful to
# e.g. force a specific version using the gem command.
ruby_fakegem_binwrapper() {
(
local gembinary=$1
local newbinary=${2:-/usr/bin/$gembinary}
local content=$3
local relativegembinary=${RUBY_FAKEGEM_NAME}-${RUBY_FAKEGEM_VERSION}/${RUBY_FAKEGEM_BINDIR}/${gembinary}
local binpath=$(dirname $newbinary)
[[ ${binpath} = . ]] && binpath=/usr/bin
# Try to find out whether the package is going to install for
# one or multiple implementations; if we're installing for a
# *single* implementation, no need to use “/usr/bin/env ruby”
# in the shebang, and we can actually avoid errors when
# calling the script by default (see for instance the
# JRuby-specific commands).
local rubycmd=
for implementation in $(_ruby_get_all_impls); do
# ignore non-enabled implementations
use ruby_targets_${implementation} || continue
if [ -z $rubycmd ]; then
# if no other implementation was set before, set it.
rubycmd="$(ruby_implementation_command ${implementation})"
else
# if another implementation already arrived, then make
# it generic and break out of the loop. This ensures
# that we do at most two iterations.
rubycmd="/usr/bin/env ruby"
break
fi
done
cat - > "${T}"/gembin-wrapper-${gembinary} <<EOF
#!${rubycmd}
# This is a simplified version of the RubyGems wrapper
#
# Generated by ruby-fakegem.eclass
require 'rubygems'
${content}
load Gem::default_path[-1] + "/gems/${relativegembinary}"
EOF
exeinto ${binpath:-/usr/bin}
newexe "${T}"/gembin-wrapper-${gembinary} $(basename $newbinary)
) || die "Unable to create fakegem wrapper"
}
# @FUNCTION: all_fakegem_compile
# @DESCRIPTION:
# Build documentation for the package if indicated by the doc USE flag
# and if there is a documetation task defined.
all_fakegem_compile() {
if [[ -n ${RUBY_FAKEGEM_DOCDIR} ]] && use doc; then
case ${RUBY_FAKEGEM_RECIPE_DOC} in
rake)
rake ${RUBY_FAKEGEM_TASK_DOC} || die "failed to (re)build documentation"
;;
rdoc)
rdoc ${RUBY_FAKEGEM_DOC_SOURCES} || die "failed to (re)build documentation"
;;
yard)
yard doc ${RUBY_FAKEGEM_DOC_SOURCES} || die "failed to (re)build documentation"
;;
esac
fi
}
# @FUNCTION: all_ruby_unpack
# @DESCRIPTION:
# Unpack the source archive, including support for unpacking gems.
all_ruby_unpack() {
# Special support for extracting .gem files; the file need to be
# extracted twice and the mtime from the archive _has_ to be
# ignored (it's always set to epoch 0).
for archive in ${A}; do
case "${archive}" in
*.gem)
# Make sure that we're not running unpack for more than
# one .gem file, since we won't support that at all.
[[ -d "${S}" ]] && die "Unable to unpack ${archive}, ${S} exists"
ebegin "Unpacking .gem file..."
tar -mxf "${DISTDIR}"/${archive} || die
eend $?
ebegin "Uncompressing metadata"
gunzip metadata.gz || die
eend $?
mkdir "${S}"
pushd "${S}" &>/dev/null || die
ebegin "Unpacking data.tar.gz"
tar -mxf "${my_WORKDIR}"/data.tar.gz || die
eend $?
popd &>/dev/null || die
;;
*.patch.bz2)
# We apply the patches with RUBY_PATCHES directly from DISTDIR,
# as the WORKDIR variable changes value between the global-scope
# and the time all_ruby_unpack/_prepare are called. Since we can
# simply decompress them when applying, this is much easier to
# deal with for us.
einfo "Keeping ${archive} as-is"
;;
*)
unpack ${archive}
;;
esac
done
}
# @FUNCTION: all_ruby_compile
# @DESCRIPTION:
# Compile the package.
all_ruby_compile() {
all_fakegem_compile
}
# @FUNCTION: each_fakegem_test
# @DESCRIPTION:
# Run tests for the package for each ruby target if the test task is defined.
each_fakegem_test() {
case ${RUBY_FAKEGEM_RECIPE_TEST} in
rake)
${RUBY} -S rake ${RUBY_FAKEGEM_TASK_TEST} || die "tests failed"
;;
rspec)
RSPEC_VERSION=2 ruby-ng_rspec
;;
rspec3)
RSPEC_VERSION=3 ruby-ng_rspec
;;
cucumber)
ruby-ng_cucumber
;;
none)
ewarn "each_fakegem_test called, but \${RUBY_FAKEGEM_RECIPE_TEST} is 'none'"
;;
esac
}
if [[ ${RUBY_FAKEGEM_RECIPE_TEST} != none ]]; then
# @FUNCTION: each_ruby_test
# @DESCRIPTION:
# Run the tests for this package.
each_ruby_test() {
each_fakegem_test
}
fi
# @FUNCTION: each_fakegem_install
# @DESCRIPTION:
# Install the package for each ruby target.
each_fakegem_install() {
ruby_fakegem_install_gemspec
local _gemlibdirs="${RUBY_FAKEGEM_EXTRAINSTALL}"
for directory in "${RUBY_FAKEGEM_BINDIR}" lib; do
[[ -d ${directory} ]] && _gemlibdirs="${_gemlibdirs} ${directory}"
done
[[ -n ${_gemlibdirs} ]] && \
ruby_fakegem_doins -r ${_gemlibdirs}
}
# @FUNCTION: each_ruby_install
# @DESCRIPTION:
# Install the package for each target.
each_ruby_install() {
each_fakegem_install
}
# @FUNCTION: all_fakegem_install
# @DESCRIPTION:
# Install files common to all ruby targets.
all_fakegem_install() {
if [[ -n ${RUBY_FAKEGEM_DOCDIR} ]] && use doc; then
for dir in ${RUBY_FAKEGEM_DOCDIR}; do
[[ -d ${dir} ]] || continue
pushd ${dir} &>/dev/null || die
dodoc -r * || die "failed to install documentation"
popd &>/dev/null || die
done
fi
if [[ -n ${RUBY_FAKEGEM_EXTRADOC} ]]; then
dodoc ${RUBY_FAKEGEM_EXTRADOC} || die "failed to install further documentation"
fi
# binary wrappers; we assume that all the implementations get the
# same binaries, or something is wrong anyway, so...
if [[ -n ${RUBY_FAKEGEM_BINWRAP} ]]; then
local bindir=$(find "${D}" -type d -path "*/gems/${RUBY_FAKEGEM_NAME}-${RUBY_FAKEGEM_VERSION}/${RUBY_FAKEGEM_BINDIR}" -print -quit)
if [[ -d "${bindir}" ]]; then
pushd "${bindir}" &>/dev/null || die
for binary in ${RUBY_FAKEGEM_BINWRAP}; do
ruby_fakegem_binwrapper "${binary}"
done
popd &>/dev/null || die
fi
fi
}
# @FUNCTION: all_ruby_install
# @DESCRIPTION:
# Install files common to all ruby targets.
all_ruby_install() {
all_fakegem_install
}