Everything moved to it's new file for now. Cleanup is well under way. Improved the unix2dos function.

.includes/functions.sh

@@ -22,6 +22,26 @@ check_requirements() {
     return 0
 }
 
+clear_cache() {
+    local answer
+    if [[ ! -d "${cache}" ]]; then
+        echo "No cache found at ${cache}."
+        return
+    fi
+    while ! [[ "${answer,,}" =~ ^yes$|^no$ ]]; do
+        echo "This will delete all contents of ${cache}. Are you sure you want to continue?"
+        echo "Please type yes or no."
+        echo
+        read -r answer
+    done
+    if [[ "$answer" == "no" ]]; then
+        return
+    fi
+    # All safety checks done. Delete the cache.
+    rm -rfv "${cache}"
+    echo "Cache deleted."
+}
+
 download() {
    local source=($@)
    for i in "${source[@]}" ; do
@@ -83,6 +103,81 @@ download() {
    done
 }
 
+get_installer() {
+        trap "exit 0" SIGINT
+        # If the file is in cache nothing else needs to be done.
+        if [[ -f "${cache}/$1" ]]; then
+            return
+        fi
+        # Create message for dialog.
+        local message="Make sure $1 is available in either your Downloads or Desktop directory and press enter to continue."
+        if [[ -n "$2" ]]; then
+            message+="\n\nThe last good known URL for $game is:"
+            message+="\n$2"
+        fi
+        if echo "$2" | xclip -selection clipboard 2> /dev/null ; then
+            message+="\n\nThe URL has been copied to the clipboard."
+        fi
+        dialog --ok-label "Continue" \
+            --backtitle "Audiogame Manager" \
+            --msgbox "$message" -1 -1
+        # Search the Desktop and Downloads directories for the installation file
+        for i in ~/Downloads ~/Desktop ; do
+            find $i -type f -name "$1" -exec cp -v {} "${cache}/" \;
+        done
+        # If the file is still not available abort.
+        if [[ ! -f "${cache}/$1" ]]; then
+            echo "couldn't find $1. Please download the file and try again."
+            exit 1
+        fi
+}
+
+get_steam() {
+    # Arguments: $1 id of item for download, $2 url for game
+    trap "exit 0" SIGINT
+    echo "manual intervention required."
+    alert
+    dialog --backtitle "Audiogame Manager" \
+        --yes-label "Continue with Steam" \
+        --no-label "Install manually" \
+        --extra-button \
+        --extra-label "Exit" \
+        --yesno "To install the game manually, place files in \"${WINEPREFIX}/drive_c/Program Files/${game}\"" -1 -1 --stdout
+    case $? in
+        0) echo "The next steps will install through steamcmd." ;;
+        1)
+            mkdir -p "${WINEPREFIX}/drive_c/Program Files/${game}"
+            dialog --backtitle "Audiogame Manager" \
+            --msgbox "Place game files in  \"${WINEPREFIX}/drive_c/Program Files/${game}\" and press enter to continue." -1 -1 --stdout
+        return
+        ;;
+        *) exit 0 ;;
+    esac
+    # Check for steamcmd
+    if ! command -v steamcmd &> /dev/null ; then
+        dialog --backtitle "Audiogame Manager" \
+            --infobox "This installer requires steamcmd. Please install steamcmd and try again." -1 -1
+        exit 1
+    fi
+    # Create message for dialog.
+    local message="Make sure ${game} is available in your Steam library and press enter to continue. The URL for ${game} is $2"
+    if echo "$2" | xclip -selection clipboard 2> /dev/null ; then
+        message+="\n\nThe URL has been copied to the clipboard."
+    fi
+    dialog --ok-label "Continue" \
+        --backtitle "Audiogame Manager" \
+        --msgbox "$message" -1 -1
+    # Get Steam user name.
+    steamUser="$(dialog --ok-label "Continue" \
+        --backtitle "Audiogame Manager" \
+        --inputbox "Please enter your Steam user name:" -1 -1 --stdout)"
+    # Download the game
+    mkdir -p "${WINEPREFIX}/drive_c/Program Files/${game}"
+    steamcmd +@sSteamCmdForcePlatformType windows +force_install_dir "${WINEPREFIX}/drive_c/Program Files/$game" +login "$steamUser" +app_update "$1" +quit || { dialog  --backtitle "Audiogame Manager" \
+        --infobox "Something went wrong. Please make sure you have a stable internet connection, and if the problem persists, contact audiogame-manager's developers." -1 -1
+        exit 1; }
+}
+
 # Function to open urls across OS.
 open_url() {
     if [[ "$(uname)" == "Darwin" ]]; then
@@ -91,3 +186,13 @@ open_url() {
         xdg-open "${*}" 2> /dev/null
     fi
 }
+
+unix2dos() {
+    if [[ $# -eq 0 ]]; then
+        echo "Usage: unix2dos file(s)."
+        exit 1
+    fi
+    for file in "$@"; do
+        sed -i 's/\r\{0,\}$/\r/' "$file"
+    done
+}