OPENPATH

The OPENPATH statement is used to open a file (given an absolute or relative path) to a descriptor variable within jBC.  See also the OPEN statement.

COMMAND SYNTAX

OPENPATH expression1 TO {variable} {SETTING setvar} THEN|ELSE statements

SYNTAX ELEMENTS

Expression1 should be an absolute or relative path to the file including the name of the file to be opened.  If specified, variable will be used to hold the descriptor for the file. It should then be to access the file using READ and WRITE. If no file descriptor variable is supplied, then the file will be opened to the default file descriptor.

If the OPENPATH statement fails it will execute any statements associated with an ELSE clause. If the OPENPATH is successful it will execute any statements associated with a THEN clause. Note that the syntax requires either one or both of the THEN and ELSE clauses.

If the SETTING clause is specified and the open fails, setvar will be set to one of the following values:

Incremental File Errors

NOTES

The path specified may be either a relative or absolute path and must include the name of the jBASE file being opened.

The file that is the subject of the OPENPATH statement can be of any type known to the jBASE system. Its type will be determined and correctly opened transparently to the application, which need not be aware of the file type.

There is no limit to the number of files that may be opened by a jBC program.

EXAMPLES

OPENPATH "C:\Home\CUSTOMERS" TO F.Customers ELSE
     ABORT 201, "CUSTOMERS"
END

opens the file CUSTOMERS (located in C:\Home) to its own file descriptor F.Customers.

OPEN "F:\Users\data\CUSTOMERS" ELSE ABORT 201, "CUSTOMERS"

opens the CUSTOMERS file (located in F:\Users\data) to the default file variable.

JBC