gog.exlib: initial implementation

exlibs/gog.exlib

@@ -0,0 +1,79 @@
+# Copyright 2019 Julian Ospald <hasufell@posteo.de>
+# Distributed under the terms of the GNU General Public License v2
+
+# Purpose: an exlib dealing with installation of GOG games
+# Maintainer: Julian Ospald <hasufell@posteo.de>
+# Exports: pkg_nofetch, pkg_setup, src_unpack
+# Side-effects: - adds build dependencies
+#               - sets $WORK, $DOWNLOADS, $LICENSES, $RESTRICT and $HOMEPAGE
+#
+# Usage
+#   exparams: - installer: the shell script installer (required)
+#             - unzip: whether to unzip and add unzip dependency (default: true)
+#             - install_dir: installation dir (default: /opt/${PN})
+
+
+myexparam installer=
+myexparam -b unzip=true
+myexparam install_dir=/opt/${PN}
+
+exparam -v GOG_SH installer
+exparam -v GOG_INSTALL_DIR install_dir
+
+if [[ -z $(exparam installer) ]]; then
+    die "installer needs to be set!"
+fi
+
+if [[ "$GOG_INSTALL_DIR" != /* ]]; then
+    die "${GOG_INSTALL_DIR} must be absolute!"
+fi
+
+export_exlib_phases pkg_nofetch pkg_setup src_unpack
+
+
+HOMEPAGE="https://www.gog.com"
+DOWNLOADS="manual: ${GOG_SH}"
+
+LICENCES="all-rights-reserved GOG-EULA"
+RESTRICT="fetch"
+
+if exparam -b unzip ; then
+    DEPENDENCIES+="
+        build:
+            virtual/unzip
+    "
+fi
+
+WORK="${WORKBASE}/data/noarch"
+
+# Exported 'pkg_nofetch'.
+#
+# Arguments: none
+# Side-effects: prints einfo
+gog_pkg_nofetch() {
+    einfo
+    einfo "Please buy & download \"${GOG_SH}\""
+    einfo "from:"
+    einfo "  ${HOMEPAGE}"
+    einfo "and move/link it to \"${FETCHEDDIR}\""
+    einfo
+}
+
+# Exported 'pkg_setup'.
+#
+# Arguments: none
+# Side-effects: makes sure /opt is allowed to be installed into
+gog_pkg_setup() {
+    exdirectory --allow "$(dirname "${GOG_INSTALL_DIR}")"
+}
+
+# Exported 'src_unpack'.
+#
+# Arguments: none
+# Side-effects: unpacks the data
+gog_src_unpack() {
+    if exparam -b unzip ; then
+        unzip -qo "${FETCHEDDIR}/${GOG_SH}"
+        [[ $? -le 1 ]] || die "unpacking ${GOG_SH} failed!"
+    fi
+}