Detect and process legacy fingerprint (setup) files

diff --git a/autorandr b/autorandr
index 7152ca0ecf11fa8d5d63b0bafd2bf14e0ff4efa7..21185cb358be5cad35f0a154ae76bc28ccfb7917 100755 (executable)
--- a/autorandr
+++ b/autorandr
@@ -453,7 +453,27 @@ for SETUP_FILE in $PROFILES/*/setup; do
                continue
        fi
 
-       FILE_SETUP="$(cat "$PROFILES/$PROFILE/setup")"
+       # This sed command is for compatibility with old versions that did not try
+       # to normalize device names
+       FILE_SETUP="$(sed -re 's#-([A-Z]-)?##g; s#card[0-9]##;' "$PROFILES/$PROFILE/setup")"
+       # Detect the md5sum in fingerprint files created using the old sysfs fingerprinting
+       # If it is detected, output a warning and calculate the legacy variant of the current
+       # setup.
+       if echo "$FILE_SETUP" | grep -Eq "^[^ ]+ [0-9a-f]{32}$"; then
+               echo -n " (Obsolete fingerprint format. Please update using --save.) "
+
+               if [ -z "$LEGACY_CURRENT_SETUP" ]; then
+                       LEGACY_CURRENT_SETUP="$(echo "$CURRENT_SETUP" | while read DEVICE EDID; do
+                               echo -n "${DEVICE} "
+                               echo -n "${EDID}" | xxd -r -ps | md5sum - | awk '{print $1}'
+                       done)"
+               fi
+               FILE_SETUP="$(echo "$FILE_SETUP" | sort)"
+               if [ "$LEGACY_CURRENT_SETUP" = "$FILE_SETUP" ]; then
+                       CURRENT_SETUP="$LEGACY_CURRENT_SETUP"
+               fi
+       fi
+
        if [ "$CURRENT_SETUP" = "$FILE_SETUP" ]; then
                echo " (detected)"
                if [ "$CHANGE_PROFILE" -eq 1 ]; then