hasufell-repository/exlibs/desktop-utils.exlib

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# Copyright 2016 Julian Ospald <hasufell@posteo.de>
# Distributed under the terms of the GNU General Public License v2
# Purpose: an exlib dealing with '.desktop' files
# Maintainer: Julian Ospald <hasufell@posteo.de>
# Exports: nothing
# Side-effects: adds build dependencies
# needed for 'here_desktop_entry'
DEPENDENCIES+="
build:
dev-util/desktop-file-utils
"
# Like 'herebin', but for desktop entry files.
#
# Arguments: <filename>
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# Side-effects: installs the desktop entry
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# Inspection: $TEMP, $IMAGE
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# Errors: according to 'desktop-file-validate', on missing argument
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here_desktop_entry() {
if [[ ${#} -ne 1 ]]; then
die "exactly one argument needed."
fi
(
cat > "${TEMP}/${1}"
insinto /usr/share/applications
doins "${TEMP}/${1}"
)
if ! desktop-file-validate "${IMAGE}/usr/share/applications/${1}" ; then
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eerror "${1} does not pass desktop file validation"
die_unless_nonfatal "${1} does not pass desktop file validation"
fi
}
# Creates and installs a desktop entry file according to
# https://specifications.freedesktop.org/desktop-entry-spec/desktop-entry-spec-1.1.html
# Name, Comment, Exec, TryExec and Icon are initialized automatically.
# Categories may be initialized depending on 'find_desktop_file_category'.
#
# Arguments: all fields of the desktop entry spec, e.g. 'Name=myname'
# Side-effects: installs the desktop entry via 'here_desktop_entry'
# Inspection: $PN, $SUMMARY
# Errors: on invalid arguments
install_desktop_entry() {
local Name=${PN^}
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local Comment=${SUMMARY}
local Exec=${PN}
local TryExec=
local Icon=${PN}
local Categories=$(find_desktop_file_category)
local OtherValidFields=( Version GenericName NoDisplay Hidden OnlyShowIn
NotShowIn DBusActivatable Path Terminal Actions MimeType Implements
Keywords StartupNotify StartupWMClass )
local AddFields=
while [[ $# -gt 0 ]] ; do
case $1 in
Name=*) Name=${1#*=} ; shift ;;
Comment=*) Comment=${1#*=} ; shift ;;
Exec=*) Exec=${1#*=} ; shift ;;
TryExec=*) TryExec=${1#*=} ; shift ;;
Icon=*) Icon=${1#*=} ; shift ;;
Categories=*) Categories=${1#*=} ; shift ;;
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*=*)
if has ${1%%=*} ${OtherValidFields[@]} ; then
AddFields+="\n${1}"
shift
else
die "invalid argument \"${1}\"!"
fi
;;
*) die "invalid argument \"${1}\"!" ;;
esac
done
TryExec=${TryExec:-${Exec%% *}}
here_desktop_entry ${PN}-${Exec// /_}.desktop << EOF
[Desktop Entry]
Name=${Name}
Type=Application
Comment=${Comment}
Exec=${Exec}
TryExec=${TryExec}
Icon=${Icon}
Categories=${Categories}$(echo -ne ${AddFields})
EOF
}
# Tries to guess the desktop file category according to ${CATEGORY}
# and puts it to stdout.
#
# Arguments: none
# Side-effects: stdout
# Inspection: $CATEGORY
# Errors: no
find_desktop_file_category() {
# see https://specifications.freedesktop.org/menu-spec/latest/apa.html
local maincat=
# see https://specifications.freedesktop.org/menu-spec/latest/apas02.html
local subcat=
case ${CATEGORY} in
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dev*) maincat="Development"
case ${CATEGORY##*-} in
db) subcat="Database";;
*) ;;
esac
;;
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games*) maincat="Game"
case ${CATEGORY##*-} in
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action) subcat="ActionGame" ;;
adventure) subcat="AdventureGame" ;;
arcade) subcat="ArcadeGame" ;;
board) subcat="BoardGame" ;;
fps) subcat="Shooter" ;;
roguelike) subcat="RolePlaying";;
rpg) subcat="RolePlaying";;
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simulation) subcat="Simulation" ;;
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sports) subcat="SportsGame" ;;
strategy) subcat="StrategyGame" ;;
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*) ;;
esac
;;
voip) maincat="Network"; subcat="Telephony";;
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*) ;;
esac
[[ -n ${maincat} ]] && echo -n "${maincat};"
[[ -n ${subcat} ]] && echo -n "${subcat};"
}