appdwarf: split header into multiple files

appdwarf

@@ -16,7 +16,7 @@ fi
 
 set -e # exit on failure
 IFS=$(printf '\n\t') # smarter ifs
-. "$(dirname "$(readlink -f "${0}")")/headers" && header
+HEAD="$(dirname "$(readlink -f "${0}")")/header"
 
 while true; do # process args
     case "$1" in
@@ -24,10 +24,12 @@ while true; do # process args
             app="$2"
             shift ;;
         --folder | -f) 
-            header_folder "$(realpath "$2")"
+            "$HEAD"_folder
+            HEAD=/tmp/dwarfhead
+            sed -i "2s|$|\"$2\"|" "$HEAD" 
             shift ;;
         --separate | -s) 
-            header_separate ;;
+            HEAD="$HEAD"_separate ;;
         --url | -u)
             app=$(basename "$2")
             aria2c -x16 -s16 "$2" -o "$app" || wget "$2" -O "$app"
@@ -48,10 +50,7 @@ if [ -n "$app" ]; then # handle and extract appimage input, if present
     [ ! -f "$app" ] && tput setaf 1 && echo "$app" is not a valid file && exit 1
     chmod +x "$app"
     rm -rf squashfs-root
-    case "$app" in
-        /*)  "$app" --appimage-extract || exit 1 ;;
-        *) ./"$app" --appimage-extract || exit 1 ;;
-    esac
+    "$(realpath "$app")" --appimage-extract || exit 1
     rm "$app"
     set -- "$(basename "$app" .AppImage)" "$@"
     mv squashfs-root "$1"

header

@@ -0,0 +1,14 @@
+#!/bin/sh
+# shellcheck disable=SC2086,SC2155
+DIR="/tmp/dwarf_$(basename "$0")$(echo "$0" | md5sum | head -c5)"
+export APPDWARF_CMD="$(basename "$0")"
+if [ ! -d "$DIR" ]; then
+    mkdir "$DIR"
+    ARG="-o offset=auto -o tidy_strategy=swap -o workers=4"
+    dwarfs $ARG "$0" "$DIR" 2>/dev/null
+fi
+
+"$DIR/AppRun" "$@"
+fusermount -quz "$DIR"
+rmdir "$DIR" 2> /dev/null
+exit

header_folder

@@ -0,0 +1,14 @@
+#!/bin/sh
+cat > /tmp/dwarfhead << 'EOF'
+#!/bin/sh
+DIR=
+if [ ! -d "$DIR" ]; then
+    mkdir "$DIR"
+    ARG="-o offset=auto -o tidy_strategy=swap -o workers=4"
+    dwarfs $ARG "$0" "$DIR" 2>/dev/null
+else
+    fusermount -u "$DIR"
+    rmdir "$DIR"
+fi
+exit
+EOF

header_separate

@@ -0,0 +1,11 @@
+#!/bin/sh
+# shellcheck disable=SC2086,SC2155
+DIR="$(mktemp -td dwarf_"$(basename "$0")"XXXXX)"
+ARG="-o offset=auto -o tidy_strategy=swap -o workers=4"
+export APPDWARF_CMD="$(basename "$0")"
+dwarfs $ARG "$0" "$DIR" 2>/dev/null
+
+"$DIR/AppRun" "$@"
+fusermount -uz "$DIR"
+rmdir "$DIR"
+exit

headers

@@ -1,50 +0,0 @@
-#!/bin/sh
-HEAD=/tmp/dwarfhead
-header_separate() {
-    cat > $HEAD << 'EOF'
-#!/bin/sh
-DIR="$(mktemp -td dwarf_"$(basename "$0")"XXXXX)"
-ARG="-o offset=auto -o tidy_strategy=swap -o workers=4"
-export APPDWARF_CMD="$(basename "$0")"
-dwarfs $ARG "$0" "$DIR" 2>/dev/null
-
-"$DIR/AppRun" "$@"
-fusermount -uz "$DIR"
-rmdir "$DIR"
-exit
-EOF
-}
-
-header() {
-    cat > $HEAD << 'EOF'
-#!/bin/sh
-DIR="/tmp/dwarf_$(basename "$0")$(echo "$0" | md5sum | head -c5)"
-export APPDWARF_CMD="$(basename "$0")"
-if [ ! -d "$DIR" ]; then
-    mkdir "$DIR"
-    ARG="-o offset=auto -o tidy_strategy=swap -o workers=4"
-    dwarfs $ARG "$0" "$DIR" 2>/dev/null
-fi
-
-"$DIR/AppRun" "$@"
-fusermount -quz "$DIR"
-rmdir "$DIR" 2> /dev/null
-exit
-EOF
-}
-
-header_folder() {
-    echo '#!/bin/sh' > $HEAD
-    echo DIR=\""$1"\" >> $HEAD
-    cat >> $HEAD << 'EOF'
-if [ ! -d "$DIR" ]; then
-    mkdir "$DIR"
-    ARG="-o offset=auto -o tidy_strategy=swap -o workers=4"
-    dwarfs $ARG "$0" "$DIR" 2>/dev/null
-else
-    fusermount -u "$DIR"
-    rmdir "$DIR"
-fi
-exit
-EOF
-}