Add Firebird .NET provider output format

Author: mrotteveel

internal-tools/src/main/java/org/firebirdsql/internal/tools/MessageConverter.java

@@ -56,6 +56,11 @@ static String toJaybirdMessageFormat(String fbMessage) {
         return sb.toString();
     }
 
+    static String toNetProviderMessageFormat(String fbMessage) {
+        // Format is the same as Jaybird's
+        return toJaybirdMessageFormat(fbMessage);
+    }
+
     static String toSqlState(String sqlStateClass, String sqlStateSubClass) {
         if (sqlStateClass.length() != 2) {
             throw new IllegalArgumentException("SQLSTATE class must be 2 characters, was: '" + sqlStateClass + "'");

internal-tools/src/main/java/org/firebirdsql/internal/tools/NetProviderStore.java

@@ -0,0 +1,75 @@
+// SPDX-FileCopyrightText: Copyright 2025 Mark Rotteveel
+// SPDX-License-Identifier: LGPL-2.1-or-later
+package org.firebirdsql.internal.tools;
+
+import java.io.IOException;
+import java.io.Writer;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Comparator;
+import java.util.SortedSet;
+import java.util.TreeSet;
+
+import static org.firebirdsql.internal.tools.MessageConverter.toNetProviderMessageFormat;
+
+/**
+ * Generates the list of error messages as used by the Firebird .NET Provider, class {@code FirebirdSql.Data.Common.IscErrorMessages}.
+ *
+ * @author Mark Rotteveel
+ * @since 7
+ */
+class NetProviderStore implements FirebirdErrorStore {
+
+    private static final Comparator<FirebirdError> FIREBIRD_ERROR_COMPARATOR =
+            Comparator.comparingInt(FirebirdError::errorCode);
+
+    private final SortedSet<FirebirdError> firebirdErrors = new TreeSet<>(FIREBIRD_ERROR_COMPARATOR);
+
+    @Override
+    public void addFirebirdError(FirebirdError firebirdError) {
+        firebirdErrors.add(firebirdError);
+    }
+
+    @Override
+    public void reset() {
+        firebirdErrors.clear();
+    }
+
+    @Override
+    public void save() throws IOException {
+        try (var out = Files.newBufferedWriter(Path.of("IscErrorMessages-fragment.cs"), StandardCharsets.UTF_8)) {
+            for (FirebirdError error : firebirdErrors) {
+                writeError(out, error);
+            }
+        }
+    }
+
+    private void writeError(Writer out, FirebirdError error) throws IOException {
+        out.append("\t{")
+                .append(String.valueOf(error.errorCode())).append(", ")
+                .append(enquoteCsharpString(toNetProviderMessageFormat(error.message())))
+                .append("},");
+        if (error.hasSymbolName()) {
+            out.append("\t\t/* ").append(error.symbolName()).append(" */");
+        }
+        out.append("\n");
+    }
+
+    private String enquoteCsharpString(String message) {
+        var builder = new StringBuilder(2 + (int) (message.length() * 1.1f));
+        builder.append('"');
+        for (char c : message.toCharArray()) {
+            switch (c) {
+            case '\r' -> { /* do nothing */ }
+            case '\n' -> builder.append("\\n");
+            case '\t' -> builder.append("\\t");
+            case '"' -> builder.append("\\\"");
+            case '\\' -> builder.append("\\\\");
+            default -> builder.append(c);
+            }
+        }
+        builder.append('"');
+        return builder.toString();
+    }
+}

internal-tools/src/main/java/org/firebirdsql/internal/tools/OutputFormat.java

@@ -27,6 +27,10 @@ public enum OutputFormat {
      * </p>
      */
     LANG_REF_CSV(LangRefCsvStore::new),
+    /**
+     * Format of Firebird .NET provider (FirebirdSql.Data.FirebirdClient) {@code IscErrorMessages.cs} class.
+     */
+    NET_PROVIDER(NetProviderStore::new),
     ;
 
     private final Supplier<FirebirdErrorStore> messageStoreSupplier;