142 lines
3.9 KiB
Bash
Executable File
142 lines
3.9 KiB
Bash
Executable File
#!/usr/bin/bash
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### Flatpak launcher script generator.
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###
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### Description: Create shell scripts for launching flatpak apps in
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### the users bin directory (~/.local/bin). For successful usage it is
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### recommended to add this directory to the $PATH variable.
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###
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### For users not liking this script or who want to get rid all
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### created scripts for some other reasons it is possible to run the
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### following command inside the ~/.local/bin folder.
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###
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### cd ~/.local/bin && grep -rl flatpak | xargs rm
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###
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### 2021 (c) Marcel Kapfer (mmk2410) <opensource@mmk2410.org>
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### Licensed under the MIT license
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# Add a little bit of security to the script.
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set -euf -o pipefail
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###
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# The directory where the scripts should be put.
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###
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SCRIPTS_DIR="/home/$USER/.local/bin/"
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###
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# Helper function for printing an error and exiting.
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#
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# Uses the first given argument as an error message and prints it.
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# Then exits with status code 1.
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#
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# Params:
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# error message:
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# the error message to print
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###
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err()
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{
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echo "[ERROR] $1"
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exit 1
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}
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###
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# Checks if flatpak is installed on the system.
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###
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has_flatpak()
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{
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if ! type "flatpak" &> /dev/null
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then
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err "Flatpak not installed."
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fi
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}
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###
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# Checks if the $SCRIP_DIR directory exists
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###
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has_scripts_dir()
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{
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if ! [[ -d "$SCRIPTS_DIR" ]]
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then
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err "Directory $SCRIPTS_DIR does not exist. Please create it and run again."
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fi
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}
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###
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# Print warning if a script is not executable.
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#
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# Used to warn the user in case a script with the name already exists
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# in the $SCRIPTS_DIR but is not marked as executable.
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#
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# Params:
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# app name:
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# The name must by formatted as can be seen in the main function.
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# E.g. instead of “Some App” the correct argument would be “some-app”.
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###
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is_executable()
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{
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local app="$1"
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if ! [[ -x "$SCRIPTS_DIR$app" ]]
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then
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echo "[WARNING] Script for $app already exists, but is not executable."
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fi
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}
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###
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# Create a flatpak launch script.
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#
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# Uses the argument as a flatpak name to create a script for launching it.
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#
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# Params:
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# app name:
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# The name must by formatted as can be seen in the main function.
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# E.g. instead of “Some App” the correct argument would be “some-app”.
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###
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create_script()
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{
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local app="$1"
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echo "Creating script for $app"
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# The -i argument for grep is important since otherwise it would
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# not match. It is also not possible to lowercase the query as
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# done in the query in main() since then the application ids would
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# also be lowercased and flatpak application ids are case
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# sensitive.
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local app_id
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app_id="$(flatpak list --app --columns=name,application | tr " " "-" | grep -i "$app" | cut -f2)"
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echo -e "#!/bin/sh\n# Created with https://git.mmk2410.org/mmk2410/scripts/src/branch/main/flatpak-run-generator\nflatpak run $app_id" > "$SCRIPTS_DIR$app"
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chmod +x "$SCRIPTS_DIR$app"
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}
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####
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# Main function of the script
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#
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# Iterates over the list of installed flatpak apps and calls
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# create_script() to create the script if a launcher file for the app
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# does not already exists. If a launcher file already exists it is
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# checked weather this is executable with is_executable() to warn the
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# user.
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####
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main()
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{
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# Check if the flatpak command is available and exit otherwise.
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has_flatpak
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# Check if $SCRIPTS_DIR is available and exit otherwise.
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has_scripts_dir
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# The flatpak query not only returns the app name for looping over
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# them but we also change the names to use them as a script name
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# by lowercasing them and replacing spaces in the name with a
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# dash.
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for app in $(flatpak list --app --columns=name | tr "[:upper:]" "[:lower:]" | tr " " "-")
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do
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if ! [[ -f "$SCRIPTS_DIR/$app" ]]
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then
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create_script "$app"
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else
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is_executable "$app"
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fi
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done
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}
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# Don't pass any arguments to main, since they are not used.
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main
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