###############################################################################
#
# file1.eagle --
#
# Extensible Adaptable Generalized Logic Engine (Eagle)
# Eagle File 1 Package File
#
# Copyright (c) 2007-2012 by Joe Mistachkin. All rights reserved.
#
# See the file "license.terms" for information on usage and redistribution of
# this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# RCS: @(#) $Id: $
#
###############################################################################
#
# NOTE: Use our own namespace here because even though we do not directly
# support namespaces ourselves, we do not want to pollute the global
# namespace if this script actually ends up being evaluated in Tcl.
#
namespace eval ::Eagle {
#
# NOTE: This procedure reconfigures the specified channel to full binary
# mode.
#
proc makeBinaryChannel { channel } {
fconfigure $channel -encoding binary -translation binary; # BINARY DATA
}
#
# NOTE: This procedure reads all data from the specified binary file and
# returns it.
#
proc readFile { fileName } {
set channel [open $fileName RDONLY]
makeBinaryChannel $channel
set result [read $channel]
close $channel
return $result
}
#
# NOTE: This procedure writes all data to the specified binary file and
# returns an empty string. Previous data contained in the file,
# if any, is lost.
#
proc writeFile { fileName data } {
set channel [open $fileName {WRONLY CREAT TRUNC}]
makeBinaryChannel $channel
puts -nonewline $channel $data
close $channel
return ""
}
#
# NOTE: This procedure appends data to the specified binary file and
# returns an empty string. Previous data contained in the file,
# if any, is preserved.
#
proc appendFile { fileName data } {
set channel [open $fileName {WRONLY CREAT APPEND}]
makeBinaryChannel $channel
puts -nonewline $channel $data
close $channel
return ""
}
#
# NOTE: Provide the Eagle "file" package to the interpreter.
#
package provide Eagle.File \
[expr {[isEagle] ? [info engine PatchLevel] : "1.0"}]
}
