use qrcode instead of qrencode to support python3.11

.gitignore

@@ -0,0 +1 @@
+venv/

paperbackup.py

@@ -32,7 +32,7 @@
 import sys
 import hashlib
 import subprocess
-import qrencode
+import qrcode
 from tempfile import mkstemp
 from datetime import datetime
 from PIL import Image
@@ -57,10 +57,16 @@
 
 
 def create_barcode(chunkdata):
-    version, size, im = qrencode.encode(chunkdata,
-                                        level=qrencode.QR_ECLEVEL_H,
-                                        case_sensitive=True)
-    return im
+    qr = qrcode.QRCode(
+        version=1,
+        error_correction=qrcode.constants.ERROR_CORRECT_Q,
+        box_size=10,
+        border=4,
+    )
+    qr.add_data(chunkdata)
+    qr.make(fit=True)
+    img = qr.make_image(fill_color="black", back_color="white")
+    return img
 
 
 def finish_page(pdf, canv, pageno):

paperrestore.sh

@@ -11,13 +11,13 @@ if [ -z "$SCANNEDFILE" ]; then
     exit 1
 fi
 
-if ! [ -f "$SCANNEDFILE" ]; then
+if [ ! -f "$SCANNEDFILE" ]; then
     echo "$SCANNEDFILE is not a file"
     exit 1
 fi
 
-if [ ! -x "/usr/bin/zbarimg" ]; then
-    echo "/usr/bin/zbarimg missing"
+if [ ! -x "$(command -v zbarimg)" ]; then
+    echo "zbarimg missing"
     exit 2
 fi
 
@@ -27,7 +27,7 @@ fi
 # so convert that to \0<number><space>, so sort can sort on that
 # then remove all \n\0<number><space> so we get the originial without newlines added
 
-/usr/bin/zbarimg --raw -Sdisable -Sqrcode.enable "$SCANNEDFILE" \
+zbarimg --raw -Sdisable -Sqrcode.enable "$SCANNEDFILE" \
     | sed -e "s/\^/\x0/g" \
     | sort -z -n \
     | sed ':a;N;$!ba;s/\n\x0[0-9]* //g;s/\x0[0-9]* //g;s/\n\x0//g'