[gentoo-dev] [PATCH 3/7] eclass/dotnet-pkg.eclass: introduce new eclass

["Maciej Barć" <xgqt@gentoo.org>]

Bug: https://bugs.gentoo.org/900597
Bug: https://github.com/gentoo/gentoo/pull/29309
Signed-off-by: Maciej Barć <xgqt@gentoo.org>
---
 eclass/dotnet-pkg.eclass | 249 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 249 insertions(+)
 create mode 100644 eclass/dotnet-pkg.eclass

diff --git a/eclass/dotnet-pkg.eclass b/eclass/dotnet-pkg.eclass
new file mode 100644
index 0000000000..2b711467f5
--- /dev/null
+++ b/eclass/dotnet-pkg.eclass
@@ -0,0 +1,249 @@
+# 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: 7 8
+# @PROVIDES: dotnet-pkg-utils 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.
+#
+# .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 selected .NET SDK
+#   version, so building with other .NET versions will be mostly unsupported,
+# - nugets, which are similar to JAVA's JARs (package .NET dependencies),
+#   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 "${EAPI}" in
+	7 | 8 )
+		:
+		;;
+	* )
+		die "${ECLASS}: EAPI ${EAPI} unsupported."
+		;;
+esac
+
+if [[ -z ${_DOTNET_PKG_ECLASS} ]] ; then
+_DOTNET_PKG_ECLASS=1
+
+inherit dotnet-pkg-utils
+
+# @ECLASS_VARIABLE: DOTNET_PROJECTS
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Path to the main .NET project files (".csproj", ".fsproj", ".vbproj")
+# used by default by "dotnet-pkg_src_compile" phase function.
+#
+# In .NET version 6.0 and lower it was possible to build a project solution
+# (".sln") immediately with output to a specified directory ("--output DIR"),
+# but versions >= 7.0 deprecated this behavior. This means that
+# "dotnet-pkg-utils_build" will fail when pointed to a solution or a directory
+# containing a solution file.
+#
+# It is up to the maintainer if this variable is set before inheriting
+# "dotnet-pkg-utils" eclass, but it is advised that it is set after
+# the variable "${S}" is set, it should also integrate with it
+# (see the example below).
+#
+# Example:
+# @CODE
+# SRC_URI="..."
+# S="${S}"/src
+#
+# LICENSE="MIT"
+# SLOT="0"
+# KEYWORDS="~amd64"
+#
+# DOTNET_PROJECTS=( "${S}/DotnetProject" )
+#
+# src_prepare() {
+#     ...
+# @CODE
+
+# @ECLASS_VARIABLE: DOTNET_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-utils" eclass) is set.
+#
+# Default value is an empty array.
+#
+# For more info see the "DOTNET_PROJECT" variable and "dotnet-pkg_src_configure".
+DOTNET_RESTORE_EXTRA_ARGS=()
+
+# @ECLASS_VARIABLE: DOTNET_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-utils" eclass) is set.
+#
+# Default value is an empty array.
+#
+# Example:
+# @CODE
+# DOTNET_BUILD_EXTRA_ARGS=( -p:WarningLevel=0 )
+# @CODE
+#
+# For more info see the "DOTNET_PROJECT" variable and "dotnet-pkg_src_compile".
+DOTNET_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-utils_pkg_setup".
+dotnet-pkg_pkg_setup() {
+	dotnet-pkg-utils_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-utils_remove-global-json".
+dotnet-pkg_src_prepare() {
+	dotnet-pkg-utils_remove-global-json
+
+	default
+}
+
+# @FUNCTION: dotnet-pkg_foreach-project
+# @USAGE: <args> ...
+# @DESCRIPTION:
+# Run a specified command for each project listed inside the "DOTNET_PROJECTS"
+# variable.
+#
+# Used by "dotnet-pkg_src_configure" and "dotnet-pkg_src_compile".
+dotnet-pkg_foreach-project() {
+	debug-print-function ${FUNCNAME} "${@}"
+
+	local dotnet_project
+	for dotnet_project in "${DOTNET_PROJECTS[@]}" ; do
+		einfo "Running \"${@}\" for project: \"$(basename "${dotnet_project}")\""
+		"${@}" "${dotnet_project}"
+	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-utils_info
+
+	dotnet-pkg_foreach-project \
+		dotnet-pkg-utils_restore "${DOTNET_RESTORE_EXTRA_ARGS[@]}"
+
+	dotnet-pkg-utils_foreach-solution dotnet-pkg-utils_restore "$(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-utils_get-project" function.
+dotnet-pkg_src_compile() {
+	dotnet-pkg_foreach-project \
+		dotnet-pkg-utils_build "${DOTNET_BUILD_EXTRA_ARGS[@]}"
+}
+
+# @FUNCTION: dotnet-pkg_src_test
+# @DESCRIPTION:
+# Default "src_test" for the "dotnet-pkg" eclass.
+# Test the package.
+#
+# Test the package by testing any found solutions.
+#
+# It is very likely that this function will either not execute any tests or
+# will execute wrong or incomplete test suite. Maintainers should inspect if
+# any and/or correct tests are ran.
+dotnet-pkg_src_test() {
+	dotnet-pkg-utils_foreach-solution dotnet-pkg-utils_test "$(pwd)"
+}
+
+# @FUNCTION: dotnet-pkg_src_install
+# @DESCRIPTION:
+# Default "src_install" for the "dotnet-pkg" eclass.
+# Install the package.
+#
+# This is the default package install function for the "dotnet-pkg" eclass.
+#
+# It is very likely that this function is either insufficient or has to be
+# redefined in a ebuild.
+dotnet-pkg_src_install() {
+	# Install the compiled .NET package artifacts,
+	# for more info see "dotnet-pkg-utils_install" and "DOTNET_OUTPUT".
+	dotnet-pkg-utils_install
+
+	# Create launcher from the .NET package directory to "/usr/bin".
+	# For example: /usr/bin/Nake -> /usr/share/nake-3.0.0/Nake
+	dotnet-pkg-utils_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}
+
+	einstalldocs
+}
+
+EXPORT_FUNCTIONS pkg_setup src_unpack src_prepare src_configure src_compile src_test src_install
+
+fi
-- 
2.41.0