*small changes to mangaterm

.local/bin/mangaterm

@@ -1,9 +1,17 @@
-#!/bin/bash
+#!/bin/sh
 
 #using PID for dirname in case multiple instances are opened they do not interfere
 CACHEDIR="$HOME/.cache/mangaterm"
 TMPDIR="$CACHEDIR/$$"
 
+# read_char var
+# from: https://stackoverflow.com/a/30022297
+read_char() {
+    stty -icanon -echo
+    eval "$1=\$(dd bs=1 count=1 2>/dev/null)"
+    stty icanon echo
+}
+
 help() {
     echo "Read manga/comics in the terminal"
     echo "    mangaterm.sh DIRECTORY"
@@ -21,7 +29,7 @@ disp() {
     clear
     [ -f "$FILE" ] && chafa -C on "$FILE"
 
-    echo -n "$FILE"
+    printf "%s" "$FILE"
 }
 
 close() {
@@ -30,29 +38,25 @@ close() {
     exit
 }
 
-
 readDir() {
     DIR="$(echo "$1" | xargs)"
 
     #if opening an archive that created a subdirectory, open subdirectories until there are multiple files
     SDIR="$(ls -A "$DIR")"
     if [ "$(echo "$SDIR" | wc -l)" = "1" ]; then
-        echo "==============="
-        ls "$SDIR"
-        echo "XXXXXXXXXXXXXX"
         if [ -d "$DIR/$SDIR" ]; then  
             readDir "$DIR"/"$SDIR" 
         fi
     fi
 
-    echo "before FILES"
     FILES="$(ls "$DIR")"
     LEN="$(echo "$FILES" | wc -l)"
 
     disp "1"
 
     I=1
-    while read -n 1 char; do
+    #TODO this read is bash specific
+    while read_char char; do
         if [ "$char" = "j" ]; then
                 I=$((I + 1))
             elif [ "$char" = "k" ]; then
@@ -87,11 +91,13 @@ handleFile() {
     esac
 }
 
+trap 'close' 2
+trap 'close' 15 
+
 mkdir -p "$TMPDIR"
 
-ARGS="$1"
 if [ "$(echo "$1" | cut -c1-1)" = "-" ]; then
    foot -e mangaterm "$2" 2>/dev/null > /dev/null
 fi
 
-handleFile "$ARGS"
+handleFile "$1"