Argument	Default	Description
rsfName	-	Name of the file in which the graph is being stored.

Description:

This procedure writes a window's subgraph to a file as a set of Rigi Standard Format (RSF) tuples. The resulting RSF file is a "flat" or "non-hierarchical" file. The file can be reread using the rcl_read_rsf procedure.

The rsfName is the full file specification (including the directory path).

Return Value:

If an error occurs, -1 is returned; otherwise a non-negative value is returned.

Exceptions:

Errors are reported if the procedure is unable to open the output file.

Example:

# Procedure to write all Rigi drawing windows
# to a single RSF file.

proc writeRSF {file} {

	# Get all of the Rigi drawing Windows.
	set wins [winfo children .]
	set currentWinId [rcl_win_get_id]

	# Write the rsf from each window
	# to individual scratch files.
	set winids ""
	foreach win 
wins {

		# A Rigi drawing window should have a
		# path name of .window<n> where n is a
		# window ID.
		if {[scan 
win ".window%d%s" winid dummy] == 1} {
			lappend winids 
winid

			# Set the active window since rcl_write_rsf
			# operates on only the active window.
			rcl_win_select 
winid
			if {[rcl_write_rsf 
file
winid] == -1} {
				rcl_msg "Error writing to 
file
winid"
				return -1
			}
		}
	}

	# Reset the active window.
	rcl_win_select 
currentWinId

	# Collect each of the scratch files into
	# a single output file.

	if {[catch {set ofid [open 
file w]}]} {
		rcl_msg "Error opening 
file"
		return -1
	}
	foreach winid 
winids {
		if {[catch {set ifid [open 
file
winid r]}]} {
			rcl_msg "Error opening 
file
winid"
			close 
ofid
			return -1
		}
		while {[gets 
ifid rec] != -1} {
			puts 
ofid 
rec
		}
		close 
ifid

		# Delete the scratch file.
		# execfg is a Rigi extension to the Tcl exec
		# command. It searches the path and executes
		# a command in foreground mode.
		execfg rm 
file
winid -catch
	}
	close 
ofid
}

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