Another Tcl module maker

Richard Suchenwirth 2007-08-17 - Looking at Tcl modules, I wanted to know how to produce such a sourceable module file which contains both Tcl scripts and one DLL (and thus does more than the Tcl module creation script). Here is my take, which

first writes all specified Tcl scripts to the output file
then, if a DLL is specified, generates loader code, puts a Ctrl-Z to terminate sourceing
and finally appends the DLL in binary translation

 #!/usr/bin/env tclsh
 set usage {
    usage: make_tm package version ?tclfile...? ?dllfile initfunc?
    Creates a Tcl module file 'outfilename' from the specified tclfiles
    and/or maximally one DLL.
 }
 if {[llength $argv] == 0} {puts stderr $usage; exit 1}

 proc main argv {
     set package [lindex $argv 0]
     set version [lindex  $argv 1]
     set outf [open ${package}-${version}.tm w]
     fconfigure $outf -translation lf
     puts $outf "package provide [lindex $argv 0] [lindex $argv 1]"
     foreach a [lrange $argv 2 end] {
        switch -- [file extension $a] {
            .tcl {
                puts $outf "\#-- from $a"
                set f [open $a]
                fcopy $f $outf
                close $f
            }
            .dll {
                set f [open $a]
                fconfigure $f    -translation binary
                puts $outf "\#-- from $a"
                puts $outf "set tmp \[open \$env(TMP)\\[file tail $a] w\]"
                puts $outf {
                    set f [open [info script]]
                    fconfigure $f -translation binary
                    set data [read $f][close $f]
                    set ctrlz [string first \u001A $data]
                    fconfigure $tmp -translation binary
                    puts -nonewline $tmp [string range $data [incr ctrlz] end]
                    close $tmp
                }
                puts $outf "load \$env(TMP)/[file tail $a] [lindex $argv end]"
                puts -nonewline $outf \u001A
                fconfigure $outf -translation binary
                fcopy $f $outf
                close $f
                break
            }
            default {error "cannot handle file $a"}
        }
    }
    close $outf
 }

 main $argv

I tested this on Windows with Tcl 8.4.1 and

 /Tcl $ make_tm.tcl regtry 1.1 vecmath.tcl lib/reg1.1/tclreg11.dll registry

and it worked nicely, as far as I can tell - the registry command is usable after sourcing. One can even edit the resulting .tm file with emacs, without damage to the embedded DLL :^)

MJ - Some remarks

the / slash after the TEMP directory gives me an 'access denied' error when loading the dll. With \\ it works. (changed)
if the line terminator of the Tcl scripts is CRLF I cannot edit it with emacs or vim on windows. With LF it's fine. (changed)
changed the command line parameters and added a package provide

Category Example