ncurses 4.2

[ncurses.git] / form / fld_link.c

diff --git a/form/fld_link.c b/form/fld_link.c
new file mode 100644 (file)
index 0000000..b3c6a7f
--- /dev/null
+++ b/form/fld_link.c
@@ -0,0 +1,90 @@
+/****************************************************************************
+ * Copyright (c) 1998 Free Software Foundation, Inc.                        *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *   Author: Juergen Pfeifer <Juergen.Pfeifer@T-Online.de> 1995,1997        *
+ ****************************************************************************/
+
+#include "form.priv.h"
+
+MODULE_ID("$Id: fld_link.c,v 1.2 1998/02/11 12:13:44 tom Exp $")
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform  
+|   Function      :  FIELD *link_field(FIELD *field, int frow, int fcol)  
+|   
+|   Description   :  Duplicates the field at the specified position. The
+|                    new field shares its buffers with the original one,
+|                    the attributes are independent.
+|                    If an error occurs, errno is set to
+|                    
+|                    E_BAD_ARGUMENT - invalid argument
+|                    E_SYSTEM_ERROR - system error
+|
+|   Return Values :  Pointer to the new field or NULL if failure
++--------------------------------------------------------------------------*/
+FIELD *link_field(FIELD * field, int frow, int fcol)
+{
+  FIELD *New_Field = (FIELD *)0;
+  int err = E_BAD_ARGUMENT;
+
+  if (field && (frow>=0) && (fcol>=0) &&
+      ((err=E_SYSTEM_ERROR) != 0) && /* trick: this resets the default error */
+      (New_Field = (FIELD *)malloc(sizeof(FIELD))) )
+    {
+      *New_Field        = *_nc_Default_Field;
+      New_Field->frow   = frow;
+      New_Field->fcol   = fcol;
+      New_Field->link   = field->link;
+      field->link       = New_Field;
+      New_Field->buf    = field->buf;
+      New_Field->rows   = field->rows;
+      New_Field->cols   = field->cols;
+      New_Field->nrow   = field->nrow;
+      New_Field->nbuf   = field->nbuf;
+      New_Field->drows  = field->drows;
+      New_Field->dcols  = field->dcols;
+      New_Field->maxgrow= field->maxgrow;
+      New_Field->just   = field->just;
+      New_Field->fore   = field->fore;
+      New_Field->back   = field->back;
+      New_Field->pad    = field->pad;
+      New_Field->opts   = field->opts;
+      New_Field->usrptr = field->usrptr;
+      if (_nc_Copy_Type(New_Field,field)) 
+       return New_Field;
+    }
+
+  if (New_Field) 
+    free_field(New_Field);
+
+  SET_ERROR( err );
+  return (FIELD *)0;
+}
+
+/* fld_link.c ends here */