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+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# @ECLASS: dotnet-pkg.eclass
+# @MAINTAINER:
+# Gentoo Dotnet project <dotnet@gentoo.org>
+# @AUTHOR:
+# Anna Figueiredo Gomes <navi@vlhl.dev>
+# Maciej Barć <xgqt@gentoo.org>
+# @SUPPORTED_EAPIS: 8
+# @PROVIDES: dotnet-pkg-base nuget
+# @BLURB: common functions and variables for .NET packages
+# @DESCRIPTION:
+# This eclass is designed to help with building and installing packages that
+# use the .NET SDK.
+# It provides the required phase functions and special variables that make
+# it easier to write ebuilds for .NET packages.
+# If you do not use the exported phase functions, then consider using
+# the "dotnet-pkg-base.eclass" instead.
+#
+# .NET SDK is a open-source framework from Microsoft, it is a cross-platform
+# successor to .NET Framework.
+#
+# .NET packages require proper inspection before packaging:
+# - the compatible .NET SDK version has to be declared,
+#   this can be done by inspecting the package's "*.proj" files,
+#   unlike JAVA, .NET packages tend to lock onto one exact selected .NET SDK
+#   version, so building with other .NET versions will be mostly unsupported,
+# - Nugets, packages' .NET dependencies, which are similar to JAVA's JARs,
+#   have to be listed using either the "NUGETS" variable or bundled inside
+#   a "prebuilt" archive, in second case also the "NUGET_PACKAGES" variable
+#   has to be explicitly set.
+# - the main project file (*.proj) that builds the project has to be specified
+#   by the "DOTNET_PROJECT" variable.
+
+case ${EAPI} in
+	8) ;;
+	*) die "${ECLASS}: EAPI ${EAPI:-0} not supported" ;;
+esac
+
+if [[ -z ${_DOTNET_PKG_ECLASS} ]] ; then
+_DOTNET_PKG_ECLASS=1
+
+inherit dotnet-pkg-base
+
+# Append to "RDEPEND" and "BDEPEND" "DOTNET_PKG_RDEPS" and "DOTNET_PKG_BDEPS"
+# generated by "dotnet-pkg-base" eclass.
+RDEPEND+=" ${DOTNET_PKG_RDEPS} "
+BDEPEND+=" ${DOTNET_PKG_BDEPS} "
+
+# @ECLASS_VARIABLE: DOTNET_PKG_PROJECTS
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Path to the main .NET project files (".csproj", ".fsproj", ".vbproj")
+# used by default by "dotnet-pkg_src_compile" phase function.
+#
+# In .NET version 6.0 and lower it was possible to build a project solution
+# (".sln") immediately with output to a specified directory ("--output DIR"),
+# but versions >= 7.0 deprecated this behavior. This means that
+# "dotnet-pkg-base_build" will fail when pointed to a solution or a directory
+# containing a solution file.
+#
+# It is up to the maintainer if this variable is set before inheriting
+# "dotnet-pkg-base" eclass, but it is advised that it is set after
+# the variable "${S}" is set, it should also integrate with it
+# (see the example below).
+#
+# Example:
+# @CODE
+# SRC_URI="..."
+# S="${WORKDIR}/${P}/src"
+#
+# LICENSE="MIT"
+# SLOT="0"
+# KEYWORDS="~amd64"
+#
+# DOTNET_PKG_PROJECTS=( "${S}/DotnetProject" )
+#
+# src_prepare() {
+#     ...
+# @CODE
+
+# @ECLASS_VARIABLE: DOTNET_PKG_RESTORE_EXTRA_ARGS
+# @DESCRIPTION:
+# Extra arguments to pass to the package restore, in the "src_configure" phase.
+#
+# This is passed only when restoring the specified "DOTNET_PROJECT".
+# Other project restorers do not use this variable.
+#
+# It is up to the maintainer if this variable is set before inheriting
+# "dotnet-pkg.eclass", but it is advised that it is set after the variable
+# "DOTNET_PROJECT" (from "dotnet-pkg-base" eclass) is set.
+#
+# Default value is an empty array.
+#
+# For more info see the "DOTNET_PROJECT" variable and "dotnet-pkg_src_configure".
+DOTNET_PKG_RESTORE_EXTRA_ARGS=()
+
+# @ECLASS_VARIABLE: DOTNET_PKG_BUILD_EXTRA_ARGS
+# @DESCRIPTION:
+# Extra arguments to pass to the package build, in the "src_compile" phase.
+#
+# This is passed only when building the specified "DOTNET_PROJECT".
+# Other project builds do not use this variable.
+#
+# It is up to the maintainer if this variable is set before inheriting
+# "dotnet-pkg.eclass", but it is advised that it is set after the variable
+# "DOTNET_PROJECT" (from "dotnet-pkg-base" eclass) is set.
+#
+# Default value is an empty array.
+#
+# Example:
+# @CODE
+# DOTNET_PKG_BUILD_EXTRA_ARGS=( -p:WarningLevel=0 )
+# @CODE
+#
+# For more info see the "DOTNET_PROJECT" variable and "dotnet-pkg_src_compile".
+DOTNET_PKG_BUILD_EXTRA_ARGS=()
+
+# @FUNCTION: dotnet-pkg_pkg_setup
+# @DESCRIPTION:
+# Default "pkg_setup" for the "dotnet-pkg" eclass.
+# Pre-build configuration and checks.
+#
+# Calls "dotnet-pkg-base_pkg_setup".
+dotnet-pkg_pkg_setup() {
+	[[ ${MERGE_TYPE} != binary ]] && dotnet-pkg-base_setup
+}
+
+# @FUNCTION: dotnet-pkg_src_unpack
+# @DESCRIPTION:
+# Default "src_unpack" for the "dotnet-pkg" eclass.
+# Unpack the package sources.
+#
+# Includes a special exception for nugets (".nupkg" files) - they are instead
+# copied into the "NUGET_PACKAGES" directory.
+dotnet-pkg_src_unpack() {
+	nuget_link-system-nugets
+
+	local archive
+	for archive in ${A} ; do
+		case "${archive}" in
+			*.nupkg )
+				nuget_link "${DISTDIR}/${archive}"
+				;;
+			* )
+				unpack "${archive}"
+				;;
+		esac
+	done
+}
+
+# @FUNCTION: dotnet-pkg_src_prepare
+# @DESCRIPTION:
+# Default "src_prepare" for the "dotnet-pkg" eclass.
+# Prepare the package sources.
+#
+# Run "dotnet-pkg-base_remove-global-json".
+dotnet-pkg_src_prepare() {
+	dotnet-pkg-base_remove-global-json
+
+	default
+}
+
+# @FUNCTION: dotnet-pkg_foreach-project
+# @USAGE: <args> ...
+# @DESCRIPTION:
+# Run a specified command for each project listed inside the "DOTNET_PKG_PROJECTS"
+# variable.
+#
+# Used by "dotnet-pkg_src_configure" and "dotnet-pkg_src_compile".
+dotnet-pkg_foreach-project() {
+	debug-print-function "${FUNCNAME[0]}" "${@}"
+
+	local dotnet_project
+	for dotnet_project in "${DOTNET_PKG_PROJECTS[@]}" ; do
+		ebegin "Running \"${*}\" for project: \"${dotnet_project##*/}\""
+		"${@}" "${dotnet_project}"
+		eend $? "${FUNCNAME[0]}: failed for project: \"${dotnet_project}\"" || die
+	done
+}
+
+# @FUNCTION: dotnet-pkg_src_configure
+# @DESCRIPTION:
+# Default "src_configure" for the "dotnet-pkg" eclass.
+# Configure the package.
+#
+# First show information about current .NET SDK that is being used,
+# then restore the project file specified by "DOTNET_PROJECT",
+# afterwards restore any found solutions.
+dotnet-pkg_src_configure() {
+	dotnet-pkg-base_info
+
+	dotnet-pkg_foreach-project \
+		dotnet-pkg-base_restore "${DOTNET_PKG_RESTORE_EXTRA_ARGS[@]}"
+
+	dotnet-pkg-base_foreach-solution dotnet-pkg-base_restore "$(pwd)"
+}
+
+# @FUNCTION: dotnet-pkg_src_compile
+# @DESCRIPTION:
+# Default "src_compile" for the "dotnet-pkg" eclass.
+# Build the package.
+#
+# Build the package using "dotnet build" in the directory specified by either
+# "DOTNET_PROJECT" or "S" (temporary build directory) variables.
+#
+# For more info see: "DOTNET_PROJECT" variable
+# and "dotnet-pkg-base_get-project" function.
+dotnet-pkg_src_compile() {
+	dotnet-pkg_foreach-project \
+		dotnet-pkg-base_build "${DOTNET_PKG_BUILD_EXTRA_ARGS[@]}"
+}
+
+# @FUNCTION: dotnet-pkg_src_test
+# @DESCRIPTION:
+# Default "src_test" for the "dotnet-pkg" eclass.
+# Test the package.
+#
+# Test the package by testing any found solutions.
+#
+# It is very likely that this function will either not execute any tests or
+# will execute wrong or incomplete test suite. Maintainers should inspect if
+# any and/or correct tests are ran.
+dotnet-pkg_src_test() {
+	dotnet-pkg-base_foreach-solution dotnet-pkg-base_test "$(pwd)"
+}
+
+# @FUNCTION: dotnet-pkg_src_install
+# @DESCRIPTION:
+# Default "src_install" for the "dotnet-pkg" eclass.
+# Install the package.
+#
+# This is the default package install:
+#   - install the compiled .NET package artifacts,
+#	  for more info see "dotnet-pkg-base_install" and "DOTNET_PKG_OUTPUT",
+#   - create launcher from the .NET package directory to "/usr/bin",
+#     phase will detect to choose either executable with capital letter
+#     (common among .NET packages) or not,
+#   - call "einstalldocs".
+#
+# It is very likely that this function is either insufficient or has to be
+# redefined in a ebuild.
+dotnet-pkg_src_install() {
+	dotnet-pkg-base_install
+
+	# /usr/bin/Nake -> /usr/share/nake-3.0.0/Nake
+	if [[ -f "${D}/usr/share/${P}/${PN^}" ]] ; then
+		dotnet-pkg-base_dolauncher "/usr/share/${P}/${PN^}"
+
+		# Create a compatibility symlink and also for ease of use from CLI.
+		dosym -r "/usr/bin/${PN^}" "/usr/bin/${PN}"
+
+	elif [[ -f "${D}/usr/share/${P}/${PN}" ]] ; then
+		dotnet-pkg-base_dolauncher "/usr/share/${P}/${PN}"
+	fi
+
+	einstalldocs
+}
+
+fi
+
+EXPORT_FUNCTIONS pkg_setup src_unpack src_prepare src_configure src_compile src_test src_install