New upstream version 4.0.2upstream/4.0.2

1 files changed, 125 insertions, 0 deletions

diff --git a/src/sql/xbdrptbl.cpp b/src/sql/xbdrptbl.cpp
new file mode 100755
index 0000000..e2cfa9d
--- /dev/null
+++ b/src/sql/xbdrptbl.cpp
@@ -0,0 +1,125 @@
+/* xbdrptbl.cpp
+
+XBase64 Software Library
+
+Copyright (c) 1997,2003,2014,2022 Gary A Kunkel
+
+The xb64 software library is covered under the terms of the GPL Version 3, 2007 license.
+
+Email Contact:
+
+    XDB-devel@lists.sourceforge.net
+    XDB-users@lists.sourceforge.net
+
+*/
+
+#include "xbase.h"
+
+#ifdef XB_SQL_SUPPORT
+
+namespace xb{
+
+
+/***********************************************************************/
+xbInt16 xbSql::SqlDropTable( const xbString &sCmdLine ){
+
+  // std::cout << "DROP TABLE [" << sCmdLine << "]\n";
+  // expected format:
+  //  DROP TABLE [IF EXISTS] tablename.dbf
+
+
+  xbInt16  iRc = 0;
+  xbInt16  iErrorStop = 0;
+  xbString sTableName = "";
+  xbUInt32 ulPos = 0;
+  xbString sCmd = sCmdLine;
+  xbString sNode = "";
+  xbBool   bIfExists = xbFalse;
+  xbDbf * dbf = NULL;
+
+  try{
+
+    // drop off the first node "DROP"
+    ulPos = sCmd.Pos( ' ' );
+    sCmd.Ltrunc( ulPos );
+    sCmd.Ltrim();
+
+    // drop off the second node "TABLE"
+    ulPos = sCmd.Pos( ' ' );
+    sCmd.Ltrunc( ulPos );
+    sCmd.Ltrim();
+
+    sNode.ExtractElement( sCmd, ' ', 1, 0 );
+    sNode.Trim();
+    sNode.ToUpperCase();
+
+    if( sNode == "IF" ){
+      ulPos = sCmd.Pos( ' ' );
+      sCmd.Ltrunc( ulPos );
+      sCmd.Ltrim();
+      sNode.ExtractElement( sCmd, ' ', 1, 0 );
+      sNode.Trim();
+      sNode.ToUpperCase();
+      if( sNode != "EXISTS" ){
+        iErrorStop = 10;
+        iRc = XB_SYNTAX_ERROR;
+        throw iRc;
+      } else {
+        ulPos = sCmd.Pos( ' ' );
+        sCmd.Ltrunc( ulPos );
+        sCmd.Ltrim();
+        bIfExists = xbTrue;
+      }
+    }
+
+    // get the table name
+    sTableName.ExtractElement( sCmd, ' ', 1, 0 );
+    sTableName.Trim();
+
+    xbFile fDbf( xbase );
+    fDbf.SetFileName( sTableName );
+
+    if( bIfExists && ! fDbf.FileExists())
+      return XB_NO_ERROR;
+
+    //  if not open, attempt to open it
+    dbf = xbase->GetDbfPtr( fDbf.GetFqFileName());
+
+    if( !dbf ){
+      dbf = xbase->Open( sTableName, iRc );
+      if( iRc !=  XB_NO_ERROR ){
+        if( iRc == XB_FILE_NOT_FOUND && bIfExists ){
+          return XB_NO_ERROR;
+        } else {
+          iErrorStop = 20;
+          throw iRc;
+        }
+      }
+    }
+    if( dbf == NULL ){
+      iErrorStop = 40;
+      iRc = XB_OPEN_ERROR;
+      throw iRc;
+    }
+
+    if(( dbf->DeleteTable()) != XB_NO_ERROR ){
+      iErrorStop = 50;
+      throw iRc;
+    }
+
+  }
+
+  catch (xbInt16 iRc ){
+    xbString sMsg;
+    sMsg.Sprintf( "xbSql::SqlDropTable() Exception Caught. Error Stop = [%d] rc = [%d] table = [%s]", iErrorStop, iRc, sTableName.Str() );
+    xbase->WriteLogMessage( sMsg.Str() );
+    xbase->WriteLogMessage( GetErrorMessage( iRc ));
+  }
+
+  return iRc;
+}
+
+/***********************************************************************/
+}              /* namespace       */
+#endif         /*  XB_SQL_SUPPORT */
+