--- /dev/null
+package club.wpia.gigi.database;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class SQLFileManager {
+
+ public static enum ImportType {
+ /**
+ * Execute Script as-is
+ */
+ PRODUCTION,
+ /**
+ * Execute Script, but change Engine=InnoDB to Engine=Memory
+ */
+ TEST,
+ /**
+ * Execute INSERT statements as-is, and TRUNCATE instead of DROPPING
+ */
+ TRUNCATE,
+ /**
+ * Execute Script as-is if db version is >= specified version in
+ * optional header
+ */
+ SAMPLE_DATA,
+ }
+
+ public static void addFile(Statement stmt, InputStream f, ImportType type) throws IOException, SQLException {
+ String sql = readFile(f);
+ if (type == ImportType.SAMPLE_DATA) {
+ String fl = sql.split("\n")[0];
+ if (fl.matches("--Version: ([0-9]+)")) {
+ int v0 = Integer.parseInt(fl.substring(11));
+ if (DatabaseConnection.CURRENT_SCHEMA_VERSION < v0) {
+ System.out.println("skipping sample data (data has version " + v0 + ", db has version " + DatabaseConnection.CURRENT_SCHEMA_VERSION + ")");
+ return;
+ }
+ }
+ }
+ sql = sql.replaceAll("--[^\n]*\n", "\n");
+ sql = sql.replaceAll("#[^\n]*\n", "\n");
+ String[] stmts = sql.split(";");
+ Pattern p = Pattern.compile("\\s*DROP TABLE IF EXISTS \"([^\"]+)\"");
+ for (String string : stmts) {
+ Matcher m = p.matcher(string);
+ string = string.trim();
+ if (string.equals("")) {
+ continue;
+ }
+ if ((string.contains("profiles") || string.contains("cacerts") || string.contains("cats_type") || string.contains("countryIsoCode")) && type == ImportType.TRUNCATE) {
+ continue;
+ }
+ string = DatabaseConnection.preprocessQuery(string);
+ if (m.matches() && type == ImportType.TRUNCATE) {
+ String sql2 = "DELETE FROM \"" + m.group(1) + "\"";
+ stmt.addBatch(sql2);
+ continue;
+ }
+ if (type == ImportType.PRODUCTION || type == ImportType.SAMPLE_DATA || string.startsWith("INSERT")) {
+ stmt.addBatch(string);
+ } else if (type == ImportType.TEST) {
+ stmt.addBatch(string.replace("ENGINE=InnoDB", "ENGINE=Memory"));
+ }
+ }
+ }
+
+ private static String readFile(InputStream f) throws IOException {
+ ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ int len;
+ byte[] buf = new byte[4096];
+ while ((len = f.read(buf)) > 0) {
+ baos.write(buf, 0, len);
+ }
+ return new String(baos.toByteArray(), "UTF-8");
+ }
+}