From 38f9045ebd04428cb04f2c56c746a1e79c4d5e21 Mon Sep 17 00:00:00 2001
From: SDGDen <sdgden@sdgcloud.nl>
Date: Thu, 5 Mar 2026 01:46:34 +0100
Subject: [PATCH] update

---
 prepdb.sh | 43 +++++++++++++++++++++++++++++++++----------
 1 file changed, 33 insertions(+), 10 deletions(-)

diff --git a/prepdb.sh b/prepdb.sh
index 943fb84..e04ffe5 100644
--- a/prepdb.sh
+++ b/prepdb.sh
@@ -20,19 +20,26 @@ replace_in_sqlite_db() {
     local OLD_STRING_ESC=$(printf '%s\n' "$OLD_STRING" | sed "s/'/''/g")
     local NEW_STRING_ESC=$(printf '%s\n' "$NEW_STRING" | sed "s/'/''/g")
 
-    # Begin a transaction
-    sqlite3 "$DB_PATH" "BEGIN TRANSACTION;"
+    # Begin a transaction at the start
+    sqlite3 "$DB_PATH" "BEGIN TRANSACTION;" || {
+        echo "Error: Failed to begin transaction"
+        exit 1
+    }
 
     # Get a list of all tables in the database
     local TABLES
-    TABLES=$(sqlite3 "$DB_PATH" ".tables")
+    TABLES=$(sqlite3 "$DB_PATH" ".tables") || {
+        echo "Error: Failed to get list of tables"
+        sqlite3 "$DB_PATH" "ROLLBACK;"
+        exit 1
+    }
 
     # Loop through each table
     for TABLE in $TABLES; do
         echo "Processing table: $TABLE"
 
         # Get a list of all non-BLOB columns in the table
-        sqlite3 "$DB_PATH" "PRAGMA table_info($TABLE);" | awk -F'|' '
+        sqlite3 "$DB_PATH" "PRAGMA table_info(\"$TABLE\");" | awk -F'|' '
         {
             if ($3 != "BLOB") {
                 print $2
@@ -41,18 +48,34 @@ replace_in_sqlite_db() {
             if [ -n "$COLUMN" ]; then
                 echo "  Processing column: $COLUMN"
 
+                # Escape column name if it's a reserved keyword
+                local ESCAPED_COLUMN
+                local ESCAPED_TABLE="\"$TABLE\""
+                if [[ "$COLUMN" =~ ^(index|group|order|table|view|database|schema|trigger|transaction|commit|rollback|savepoint|release|alter|create|drop|insert|update|delete|select|from|where|join|union|intersect|except|limit|offset|order|by|group|having|as|with|replace|cast|case|when|then|else|end|and|or|not|is|null|between|in|like|glob|match|regexp|collate|exists|unique|primary|key|foreign|references|check|constraint|default|collate|asc|desc|on|using|natural|left|right|full|outer|cross|inner)$ ]]; then
+                    ESCAPED_COLUMN="\"$COLUMN\""
+                else
+                    ESCAPED_COLUMN="$COLUMN"
+                fi
+
                 # Update only rows where the column contains OLD_STRING
                 sqlite3 "$DB_PATH" "
-                UPDATE $TABLE
-                SET $COLUMN = replace(CAST($COLUMN AS TEXT), '$OLD_STRING_ESC', '$NEW_STRING_ESC')
-                WHERE CAST($COLUMN AS TEXT) LIKE '%$OLD_STRING_ESC%';
-                "
+                UPDATE $ESCAPED_TABLE
+                SET $ESCAPED_COLUMN = replace(CAST($ESCAPED_COLUMN AS TEXT), '$OLD_STRING_ESC', '$NEW_STRING_ESC')
+                WHERE CAST($ESCAPED_COLUMN AS TEXT) LIKE '%$OLD_STRING_ESC%';
+                " || {
+                    echo "Error updating table $TABLE, column $COLUMN"
+                    sqlite3 "$DB_PATH" "ROLLBACK;"
+                    exit 1
+                }
             fi
         done
     done
 
-    # Commit the transaction
-    sqlite3 "$DB_PATH" "COMMIT;"
+    # Commit the transaction at the end
+    sqlite3 "$DB_PATH" "COMMIT;" || {
+        echo "Error committing transaction"
+        exit 1
+    }
 
     echo "Replacement completed in '$DB_PATH'. Original database backed up to '$BACKUP_PATH'."
 }