Merge pull request #192 from jrave/bind_parameter_count

Add wrapper for bind parameter count

include/SQLiteCpp/Statement.h

@@ -629,6 +629,9 @@ class Statement
         return mbDone;
     }
 
+    /// Return the number of bind parameters in the statement
+    int getBindParameterCount() const noexcept;
+
     /// Return the numeric result code for the most recent failed API call (if any).
     int getErrorCode() const noexcept; // nothrow
     /// Return the extended numeric result code for the most recent failed API call (if any).

src/Statement.cpp

@@ -391,6 +391,11 @@ int Statement::getColumnIndex(const char* apName) const
     return (*iIndex).second;
 }
 
+int Statement::getBindParameterCount() const noexcept
+{
+    return sqlite3_bind_parameter_count(mStmtPtr);
+}
+
 // Return the numeric result code for the most recent failed API call (if any).
 int Statement::getErrorCode() const noexcept // nothrow
 {

tests/Statement_test.cpp

@@ -831,3 +831,18 @@ TEST(Statement, bind64bitsLong) {
     EXPECT_EQ(4294967297L, query.getColumn(0).getInt64());
 }
 #endif
+
+TEST(Statement, getBindParameterCount) {
+    // Create a new database
+    SQLite::Database db(":memory:", SQLite::OPEN_READWRITE | SQLite::OPEN_CREATE);
+    EXPECT_EQ(0, db.exec("CREATE TABLE test (id INTEGER PRIMARY KEY, msg TEXT)"));
+
+    SQLite::Statement query(db, "SELECT id, msg FROM test where id = ?");
+    EXPECT_EQ(1, query.getBindParameterCount());
+
+    SQLite::Statement query2(db, "SELECT id, msg FROM test where id = ? and msg = ?");
+    EXPECT_EQ(2, query2.getBindParameterCount());
+
+    SQLite::Statement query3(db, "SELECT id, msg FROM test");
+    EXPECT_EQ(0, query3.getBindParameterCount());
+}