748 lines
22 KiB
Tcl
748 lines
22 KiB
Tcl
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# package.tcl --
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#
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# utility procs formerly in init.tcl which can be loaded on demand
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# for package management.
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#
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# Copyright (c) 1991-1993 The Regents of the University of California.
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# Copyright (c) 1994-1998 Sun Microsystems, Inc.
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#
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# See the file "license.terms" for information on usage and redistribution
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# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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#
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namespace eval tcl::Pkg {}
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# ::tcl::Pkg::CompareExtension --
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#
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# Used internally by pkg_mkIndex to compare the extension of a file to a given
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# extension. On Windows, it uses a case-insensitive comparison because the
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# file system can be file insensitive.
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#
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# Arguments:
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# fileName name of a file whose extension is compared
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# ext (optional) The extension to compare against; you must
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# provide the starting dot.
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# Defaults to [info sharedlibextension]
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#
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# Results:
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# Returns 1 if the extension matches, 0 otherwise
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proc tcl::Pkg::CompareExtension {fileName {ext {}}} {
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global tcl_platform
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if {$ext eq ""} {set ext [info sharedlibextension]}
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if {$tcl_platform(platform) eq "windows"} {
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return [string equal -nocase [file extension $fileName] $ext]
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} else {
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# Some unices add trailing numbers after the .so, so
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# we could have something like '.so.1.2'.
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set root $fileName
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while {1} {
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set currExt [file extension $root]
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if {$currExt eq $ext} {
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return 1
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}
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# The current extension does not match; if it is not a numeric
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# value, quit, as we are only looking to ignore version number
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# extensions. Otherwise we might return 1 in this case:
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# tcl::Pkg::CompareExtension foo.so.bar .so
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# which should not match.
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if {![string is integer -strict [string range $currExt 1 end]]} {
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return 0
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}
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set root [file rootname $root]
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}
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}
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}
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# pkg_mkIndex --
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# This procedure creates a package index in a given directory. The package
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# index consists of a "pkgIndex.tcl" file whose contents are a Tcl script that
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# sets up package information with "package require" commands. The commands
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# describe all of the packages defined by the files given as arguments.
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#
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# Arguments:
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# -direct (optional) If this flag is present, the generated
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# code in pkgMkIndex.tcl will cause the package to be
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# loaded when "package require" is executed, rather
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# than lazily when the first reference to an exported
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# procedure in the package is made.
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# -verbose (optional) Verbose output; the name of each file that
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# was successfully rocessed is printed out. Additionally,
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# if processing of a file failed a message is printed.
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# -load pat (optional) Preload any packages whose names match
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# the pattern. Used to handle DLLs that depend on
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# other packages during their Init procedure.
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# dir - Name of the directory in which to create the index.
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# args - Any number of additional arguments, each giving
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# a glob pattern that matches the names of one or
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# more shared libraries or Tcl script files in
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# dir.
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proc pkg_mkIndex {args} {
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set usage {"pkg_mkIndex ?-direct? ?-lazy? ?-load pattern? ?-verbose? ?--? dir ?pattern ...?"}
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set argCount [llength $args]
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if {$argCount < 1} {
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return -code error "wrong # args: should be\n$usage"
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}
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set more ""
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set direct 1
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set doVerbose 0
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set loadPat ""
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for {set idx 0} {$idx < $argCount} {incr idx} {
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set flag [lindex $args $idx]
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switch -glob -- $flag {
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-- {
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# done with the flags
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incr idx
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break
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}
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-verbose {
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set doVerbose 1
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}
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-lazy {
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set direct 0
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append more " -lazy"
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}
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-direct {
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append more " -direct"
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}
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-load {
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incr idx
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set loadPat [lindex $args $idx]
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append more " -load $loadPat"
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}
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-* {
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return -code error "unknown flag $flag: should be\n$usage"
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}
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default {
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# done with the flags
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break
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}
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}
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}
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set dir [lindex $args $idx]
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set patternList [lrange $args [expr {$idx + 1}] end]
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if {![llength $patternList]} {
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set patternList [list "*.tcl" "*[info sharedlibextension]"]
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}
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try {
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set fileList [glob -directory $dir -tails -types {r f} -- \
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{*}$patternList]
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} on error {msg opt} {
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return -options $opt $msg
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}
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foreach file $fileList {
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# For each file, figure out what commands and packages it provides.
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# To do this, create a child interpreter, load the file into the
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# interpreter, and get a list of the new commands and packages that
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# are defined.
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if {$file eq "pkgIndex.tcl"} {
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continue
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}
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set c [interp create]
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# Load into the child any packages currently loaded in the parent
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# interpreter that match the -load pattern.
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if {$loadPat ne ""} {
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if {$doVerbose} {
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tclLog "currently loaded packages: '[info loaded]'"
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tclLog "trying to load all packages matching $loadPat"
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}
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if {![llength [info loaded]]} {
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tclLog "warning: no packages are currently loaded, nothing"
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tclLog "can possibly match '$loadPat'"
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}
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}
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foreach pkg [info loaded] {
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if {![string match -nocase $loadPat [lindex $pkg 1]]} {
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continue
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}
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if {$doVerbose} {
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tclLog "package [lindex $pkg 1] matches '$loadPat'"
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}
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try {
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load [lindex $pkg 0] [lindex $pkg 1] $c
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} on error err {
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if {$doVerbose} {
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tclLog "warning: load [lindex $pkg 0]\
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[lindex $pkg 1]\nfailed with: $err"
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}
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} on ok {} {
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if {$doVerbose} {
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tclLog "loaded [lindex $pkg 0] [lindex $pkg 1]"
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}
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}
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if {[lindex $pkg 1] eq "Tk"} {
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# Withdraw . if Tk was loaded, to avoid showing a window.
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$c eval [list wm withdraw .]
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}
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}
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$c eval {
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# Stub out the package command so packages can require other
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# packages.
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rename package __package_orig
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proc package {what args} {
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switch -- $what {
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require {
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return; # Ignore transitive requires
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}
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default {
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__package_orig $what {*}$args
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}
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}
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}
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proc tclPkgUnknown args {}
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package unknown tclPkgUnknown
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# Stub out the unknown command so package can call into each other
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# during their initialilzation.
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proc unknown {args} {}
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# Stub out the auto_import mechanism
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proc auto_import {args} {}
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# reserve the ::tcl namespace for support procs and temporary
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# variables. This might make it awkward to generate a
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# pkgIndex.tcl file for the ::tcl namespace.
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namespace eval ::tcl {
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variable dir ;# Current directory being processed
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variable file ;# Current file being processed
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variable direct ;# -direct flag value
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variable x ;# Loop variable
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variable debug ;# For debugging
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variable type ;# "load" or "source", for -direct
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variable namespaces ;# Existing namespaces (e.g., ::tcl)
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variable packages ;# Existing packages (e.g., Tcl)
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variable origCmds ;# Existing commands
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variable newCmds ;# Newly created commands
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variable newPkgs {} ;# Newly created packages
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}
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}
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$c eval [list set ::tcl::dir $dir]
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$c eval [list set ::tcl::file $file]
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$c eval [list set ::tcl::direct $direct]
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# Download needed procedures into the slave because we've just deleted
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# the unknown procedure. This doesn't handle procedures with default
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# arguments.
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foreach p {::tcl::Pkg::CompareExtension} {
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$c eval [list namespace eval [namespace qualifiers $p] {}]
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$c eval [list proc $p [info args $p] [info body $p]]
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}
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try {
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$c eval {
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set ::tcl::debug "loading or sourcing"
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# we need to track command defined by each package even in the
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# -direct case, because they are needed internally by the
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# "partial pkgIndex.tcl" step above.
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proc ::tcl::GetAllNamespaces {{root ::}} {
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set list $root
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foreach ns [namespace children $root] {
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lappend list {*}[::tcl::GetAllNamespaces $ns]
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}
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return $list
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}
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# init the list of existing namespaces, packages, commands
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foreach ::tcl::x [::tcl::GetAllNamespaces] {
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set ::tcl::namespaces($::tcl::x) 1
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}
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foreach ::tcl::x [package names] {
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if {[package provide $::tcl::x] ne ""} {
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set ::tcl::packages($::tcl::x) 1
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}
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}
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set ::tcl::origCmds [info commands]
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# Try to load the file if it has the shared library extension,
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# otherwise source it. It's important not to try to load
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# files that aren't shared libraries, because on some systems
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# (like SunOS) the loader will abort the whole application
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# when it gets an error.
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if {[::tcl::Pkg::CompareExtension $::tcl::file [info sharedlibextension]]} {
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# The "file join ." command below is necessary. Without
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# it, if the file name has no \'s and we're on UNIX, the
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# load command will invoke the LD_LIBRARY_PATH search
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# mechanism, which could cause the wrong file to be used.
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set ::tcl::debug loading
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load [file join $::tcl::dir $::tcl::file]
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set ::tcl::type load
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} else {
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set ::tcl::debug sourcing
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source [file join $::tcl::dir $::tcl::file]
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set ::tcl::type source
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}
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# As a performance optimization, if we are creating direct
|
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# load packages, don't bother figuring out the set of commands
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# created by the new packages. We only need that list for
|
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# setting up the autoloading used in the non-direct case.
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if {!$::tcl::direct} {
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# See what new namespaces appeared, and import commands
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# from them. Only exported commands go into the index.
|
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foreach ::tcl::x [::tcl::GetAllNamespaces] {
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if {![info exists ::tcl::namespaces($::tcl::x)]} {
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namespace import -force ${::tcl::x}::*
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}
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# Figure out what commands appeared
|
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foreach ::tcl::x [info commands] {
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set ::tcl::newCmds($::tcl::x) 1
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}
|
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foreach ::tcl::x $::tcl::origCmds {
|
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unset -nocomplain ::tcl::newCmds($::tcl::x)
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}
|
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|
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foreach ::tcl::x [array names ::tcl::newCmds] {
|
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# determine which namespace a command comes from
|
||
|
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|
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set ::tcl::abs [namespace origin $::tcl::x]
|
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|
|
|
||
|
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# special case so that global names have no
|
||
|
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# leading ::, this is required by the unknown
|
||
|
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# command
|
||
|
|
|
||
|
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set ::tcl::abs \
|
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|
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[lindex [auto_qualify $::tcl::abs ::] 0]
|
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|
|
|
||
|
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if {$::tcl::x ne $::tcl::abs} {
|
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|
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# Name changed during qualification
|
||
|
|
|
||
|
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set ::tcl::newCmds($::tcl::abs) 1
|
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|
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unset ::tcl::newCmds($::tcl::x)
|
||
|
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}
|
||
|
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}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# Look through the packages that appeared, and if there is a
|
||
|
|
# version provided, then record it
|
||
|
|
|
||
|
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foreach ::tcl::x [package names] {
|
||
|
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if {[package provide $::tcl::x] ne ""
|
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|
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&& ![info exists ::tcl::packages($::tcl::x)]} {
|
||
|
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lappend ::tcl::newPkgs \
|
||
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[list $::tcl::x [package provide $::tcl::x]]
|
||
|
|
}
|
||
|
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}
|
||
|
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}
|
||
|
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} on error msg {
|
||
|
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set what [$c eval set ::tcl::debug]
|
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|
|
if {$doVerbose} {
|
||
|
|
tclLog "warning: error while $what $file: $msg"
|
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|
|
}
|
||
|
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} on ok {} {
|
||
|
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set what [$c eval set ::tcl::debug]
|
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|
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if {$doVerbose} {
|
||
|
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tclLog "successful $what of $file"
|
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|
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}
|
||
|
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set type [$c eval set ::tcl::type]
|
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|
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set cmds [lsort [$c eval array names ::tcl::newCmds]]
|
||
|
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set pkgs [$c eval set ::tcl::newPkgs]
|
||
|
|
if {$doVerbose} {
|
||
|
|
if {!$direct} {
|
||
|
|
tclLog "commands provided were $cmds"
|
||
|
|
}
|
||
|
|
tclLog "packages provided were $pkgs"
|
||
|
|
}
|
||
|
|
if {[llength $pkgs] > 1} {
|
||
|
|
tclLog "warning: \"$file\" provides more than one package ($pkgs)"
|
||
|
|
}
|
||
|
|
foreach pkg $pkgs {
|
||
|
|
# cmds is empty/not used in the direct case
|
||
|
|
lappend files($pkg) [list $file $type $cmds]
|
||
|
|
}
|
||
|
|
|
||
|
|
if {$doVerbose} {
|
||
|
|
tclLog "processed $file"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
interp delete $c
|
||
|
|
}
|
||
|
|
|
||
|
|
append index "# Tcl package index file, version 1.1\n"
|
||
|
|
append index "# This file is generated by the \"pkg_mkIndex$more\" command\n"
|
||
|
|
append index "# and sourced either when an application starts up or\n"
|
||
|
|
append index "# by a \"package unknown\" script. It invokes the\n"
|
||
|
|
append index "# \"package ifneeded\" command to set up package-related\n"
|
||
|
|
append index "# information so that packages will be loaded automatically\n"
|
||
|
|
append index "# in response to \"package require\" commands. When this\n"
|
||
|
|
append index "# script is sourced, the variable \$dir must contain the\n"
|
||
|
|
append index "# full path name of this file's directory.\n"
|
||
|
|
|
||
|
|
foreach pkg [lsort [array names files]] {
|
||
|
|
set cmd {}
|
||
|
|
lassign $pkg name version
|
||
|
|
lappend cmd ::tcl::Pkg::Create -name $name -version $version
|
||
|
|
foreach spec [lsort -index 0 $files($pkg)] {
|
||
|
|
foreach {file type procs} $spec {
|
||
|
|
if {$direct} {
|
||
|
|
set procs {}
|
||
|
|
}
|
||
|
|
lappend cmd "-$type" [list $file $procs]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
append index "\n[eval $cmd]"
|
||
|
|
}
|
||
|
|
|
||
|
|
set f [open [file join $dir pkgIndex.tcl] w]
|
||
|
|
puts $f $index
|
||
|
|
close $f
|
||
|
|
}
|
||
|
|
|
||
|
|
# tclPkgSetup --
|
||
|
|
# This is a utility procedure use by pkgIndex.tcl files. It is invoked as
|
||
|
|
# part of a "package ifneeded" script. It calls "package provide" to indicate
|
||
|
|
# that a package is available, then sets entries in the auto_index array so
|
||
|
|
# that the package's files will be auto-loaded when the commands are used.
|
||
|
|
#
|
||
|
|
# Arguments:
|
||
|
|
# dir - Directory containing all the files for this package.
|
||
|
|
# pkg - Name of the package (no version number).
|
||
|
|
# version - Version number for the package, such as 2.1.3.
|
||
|
|
# files - List of files that constitute the package. Each
|
||
|
|
# element is a sub-list with three elements. The first
|
||
|
|
# is the name of a file relative to $dir, the second is
|
||
|
|
# "load" or "source", indicating whether the file is a
|
||
|
|
# loadable binary or a script to source, and the third
|
||
|
|
# is a list of commands defined by this file.
|
||
|
|
|
||
|
|
proc tclPkgSetup {dir pkg version files} {
|
||
|
|
global auto_index
|
||
|
|
|
||
|
|
package provide $pkg $version
|
||
|
|
foreach fileInfo $files {
|
||
|
|
set f [lindex $fileInfo 0]
|
||
|
|
set type [lindex $fileInfo 1]
|
||
|
|
foreach cmd [lindex $fileInfo 2] {
|
||
|
|
if {$type eq "load"} {
|
||
|
|
set auto_index($cmd) [list load [file join $dir $f] $pkg]
|
||
|
|
} else {
|
||
|
|
set auto_index($cmd) [list source [file join $dir $f]]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# tclPkgUnknown --
|
||
|
|
# This procedure provides the default for the "package unknown" function. It
|
||
|
|
# is invoked when a package that's needed can't be found. It scans the
|
||
|
|
# auto_path directories and their immediate children looking for pkgIndex.tcl
|
||
|
|
# files and sources any such files that are found to setup the package
|
||
|
|
# database. As it searches, it will recognize changes to the auto_path and
|
||
|
|
# scan any new directories.
|
||
|
|
#
|
||
|
|
# Arguments:
|
||
|
|
# name - Name of desired package. Not used.
|
||
|
|
# version - Version of desired package. Not used.
|
||
|
|
# exact - Either "-exact" or omitted. Not used.
|
||
|
|
|
||
|
|
proc tclPkgUnknown {name args} {
|
||
|
|
global auto_path env
|
||
|
|
|
||
|
|
if {![info exists auto_path]} {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
# Cache the auto_path, because it may change while we run through the
|
||
|
|
# first set of pkgIndex.tcl files
|
||
|
|
set old_path [set use_path $auto_path]
|
||
|
|
while {[llength $use_path]} {
|
||
|
|
set dir [lindex $use_path end]
|
||
|
|
|
||
|
|
# Make sure we only scan each directory one time.
|
||
|
|
if {[info exists tclSeenPath($dir)]} {
|
||
|
|
set use_path [lrange $use_path 0 end-1]
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
set tclSeenPath($dir) 1
|
||
|
|
|
||
|
|
# we can't use glob in safe interps, so enclose the following in a
|
||
|
|
# catch statement, where we get the pkgIndex files out of the
|
||
|
|
# subdirectories
|
||
|
|
catch {
|
||
|
|
foreach file [glob -directory $dir -join -nocomplain \
|
||
|
|
* pkgIndex.tcl] {
|
||
|
|
set dir [file dirname $file]
|
||
|
|
if {![info exists procdDirs($dir)]} {
|
||
|
|
try {
|
||
|
|
source $file
|
||
|
|
} trap {POSIX EACCES} {} {
|
||
|
|
# $file was not readable; silently ignore
|
||
|
|
continue
|
||
|
|
} on error msg {
|
||
|
|
tclLog "error reading package index file $file: $msg"
|
||
|
|
} on ok {} {
|
||
|
|
set procdDirs($dir) 1
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
set dir [lindex $use_path end]
|
||
|
|
if {![info exists procdDirs($dir)]} {
|
||
|
|
set file [file join $dir pkgIndex.tcl]
|
||
|
|
# safe interps usually don't have "file exists",
|
||
|
|
if {([interp issafe] || [file exists $file])} {
|
||
|
|
try {
|
||
|
|
source $file
|
||
|
|
} trap {POSIX EACCES} {} {
|
||
|
|
# $file was not readable; silently ignore
|
||
|
|
continue
|
||
|
|
} on error msg {
|
||
|
|
tclLog "error reading package index file $file: $msg"
|
||
|
|
} on ok {} {
|
||
|
|
set procdDirs($dir) 1
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
set use_path [lrange $use_path 0 end-1]
|
||
|
|
|
||
|
|
# Check whether any of the index scripts we [source]d above set a new
|
||
|
|
# value for $::auto_path. If so, then find any new directories on the
|
||
|
|
# $::auto_path, and lappend them to the $use_path we are working from.
|
||
|
|
# This gives index scripts the (arguably unwise) power to expand the
|
||
|
|
# index script search path while the search is in progress.
|
||
|
|
set index 0
|
||
|
|
if {[llength $old_path] == [llength $auto_path]} {
|
||
|
|
foreach dir $auto_path old $old_path {
|
||
|
|
if {$dir ne $old} {
|
||
|
|
# This entry in $::auto_path has changed.
|
||
|
|
break
|
||
|
|
}
|
||
|
|
incr index
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# $index now points to the first element of $auto_path that has
|
||
|
|
# changed, or the beginning if $auto_path has changed length Scan the
|
||
|
|
# new elements of $auto_path for directories to add to $use_path.
|
||
|
|
# Don't add directories we've already seen, or ones already on the
|
||
|
|
# $use_path.
|
||
|
|
foreach dir [lrange $auto_path $index end] {
|
||
|
|
if {![info exists tclSeenPath($dir)] && ($dir ni $use_path)} {
|
||
|
|
lappend use_path $dir
|
||
|
|
}
|
||
|
|
}
|
||
|
|
set old_path $auto_path
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# tcl::MacOSXPkgUnknown --
|
||
|
|
# This procedure extends the "package unknown" function for MacOSX. It scans
|
||
|
|
# the Resources/Scripts directories of the immediate children of the auto_path
|
||
|
|
# directories for pkgIndex files.
|
||
|
|
#
|
||
|
|
# Arguments:
|
||
|
|
# original - original [package unknown] procedure
|
||
|
|
# name - Name of desired package. Not used.
|
||
|
|
# version - Version of desired package. Not used.
|
||
|
|
# exact - Either "-exact" or omitted. Not used.
|
||
|
|
|
||
|
|
proc tcl::MacOSXPkgUnknown {original name args} {
|
||
|
|
# First do the cross-platform default search
|
||
|
|
uplevel 1 $original [linsert $args 0 $name]
|
||
|
|
|
||
|
|
# Now do MacOSX specific searching
|
||
|
|
global auto_path
|
||
|
|
|
||
|
|
if {![info exists auto_path]} {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
# Cache the auto_path, because it may change while we run through the
|
||
|
|
# first set of pkgIndex.tcl files
|
||
|
|
set old_path [set use_path $auto_path]
|
||
|
|
while {[llength $use_path]} {
|
||
|
|
set dir [lindex $use_path end]
|
||
|
|
|
||
|
|
# Make sure we only scan each directory one time.
|
||
|
|
if {[info exists tclSeenPath($dir)]} {
|
||
|
|
set use_path [lrange $use_path 0 end-1]
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
set tclSeenPath($dir) 1
|
||
|
|
|
||
|
|
# get the pkgIndex files out of the subdirectories
|
||
|
|
foreach file [glob -directory $dir -join -nocomplain \
|
||
|
|
* Resources Scripts pkgIndex.tcl] {
|
||
|
|
set dir [file dirname $file]
|
||
|
|
if {![info exists procdDirs($dir)]} {
|
||
|
|
try {
|
||
|
|
source $file
|
||
|
|
} trap {POSIX EACCES} {} {
|
||
|
|
# $file was not readable; silently ignore
|
||
|
|
continue
|
||
|
|
} on error msg {
|
||
|
|
tclLog "error reading package index file $file: $msg"
|
||
|
|
} on ok {} {
|
||
|
|
set procdDirs($dir) 1
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
set use_path [lrange $use_path 0 end-1]
|
||
|
|
|
||
|
|
# Check whether any of the index scripts we [source]d above set a new
|
||
|
|
# value for $::auto_path. If so, then find any new directories on the
|
||
|
|
# $::auto_path, and lappend them to the $use_path we are working from.
|
||
|
|
# This gives index scripts the (arguably unwise) power to expand the
|
||
|
|
# index script search path while the search is in progress.
|
||
|
|
set index 0
|
||
|
|
if {[llength $old_path] == [llength $auto_path]} {
|
||
|
|
foreach dir $auto_path old $old_path {
|
||
|
|
if {$dir ne $old} {
|
||
|
|
# This entry in $::auto_path has changed.
|
||
|
|
break
|
||
|
|
}
|
||
|
|
incr index
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# $index now points to the first element of $auto_path that has
|
||
|
|
# changed, or the beginning if $auto_path has changed length Scan the
|
||
|
|
# new elements of $auto_path for directories to add to $use_path.
|
||
|
|
# Don't add directories we've already seen, or ones already on the
|
||
|
|
# $use_path.
|
||
|
|
foreach dir [lrange $auto_path $index end] {
|
||
|
|
if {![info exists tclSeenPath($dir)] && ($dir ni $use_path)} {
|
||
|
|
lappend use_path $dir
|
||
|
|
}
|
||
|
|
}
|
||
|
|
set old_path $auto_path
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# ::tcl::Pkg::Create --
|
||
|
|
#
|
||
|
|
# Given a package specification generate a "package ifneeded" statement
|
||
|
|
# for the package, suitable for inclusion in a pkgIndex.tcl file.
|
||
|
|
#
|
||
|
|
# Arguments:
|
||
|
|
# args arguments used by the Create function:
|
||
|
|
# -name packageName
|
||
|
|
# -version packageVersion
|
||
|
|
# -load {filename ?{procs}?}
|
||
|
|
# ...
|
||
|
|
# -source {filename ?{procs}?}
|
||
|
|
# ...
|
||
|
|
#
|
||
|
|
# Any number of -load and -source parameters may be
|
||
|
|
# specified, so long as there is at least one -load or
|
||
|
|
# -source parameter. If the procs component of a module
|
||
|
|
# specifier is left off, that module will be set up for
|
||
|
|
# direct loading; otherwise, it will be set up for lazy
|
||
|
|
# loading. If both -source and -load are specified, the
|
||
|
|
# -load'ed files will be loaded first, followed by the
|
||
|
|
# -source'd files.
|
||
|
|
#
|
||
|
|
# Results:
|
||
|
|
# An appropriate "package ifneeded" statement for the package.
|
||
|
|
|
||
|
|
proc ::tcl::Pkg::Create {args} {
|
||
|
|
append err(usage) "[lindex [info level 0] 0] "
|
||
|
|
append err(usage) "-name packageName -version packageVersion"
|
||
|
|
append err(usage) "?-load {filename ?{procs}?}? ... "
|
||
|
|
append err(usage) "?-source {filename ?{procs}?}? ..."
|
||
|
|
|
||
|
|
set err(wrongNumArgs) "wrong # args: should be \"$err(usage)\""
|
||
|
|
set err(valueMissing) "value for \"%s\" missing: should be \"$err(usage)\""
|
||
|
|
set err(unknownOpt) "unknown option \"%s\": should be \"$err(usage)\""
|
||
|
|
set err(noLoadOrSource) "at least one of -load and -source must be given"
|
||
|
|
|
||
|
|
# process arguments
|
||
|
|
set len [llength $args]
|
||
|
|
if {$len < 6} {
|
||
|
|
error $err(wrongNumArgs)
|
||
|
|
}
|
||
|
|
|
||
|
|
# Initialize parameters
|
||
|
|
array set opts {-name {} -version {} -source {} -load {}}
|
||
|
|
|
||
|
|
# process parameters
|
||
|
|
for {set i 0} {$i < $len} {incr i} {
|
||
|
|
set flag [lindex $args $i]
|
||
|
|
incr i
|
||
|
|
switch -glob -- $flag {
|
||
|
|
"-name" -
|
||
|
|
"-version" {
|
||
|
|
if {$i >= $len} {
|
||
|
|
error [format $err(valueMissing) $flag]
|
||
|
|
}
|
||
|
|
set opts($flag) [lindex $args $i]
|
||
|
|
}
|
||
|
|
"-source" -
|
||
|
|
"-load" {
|
||
|
|
if {$i >= $len} {
|
||
|
|
error [format $err(valueMissing) $flag]
|
||
|
|
}
|
||
|
|
lappend opts($flag) [lindex $args $i]
|
||
|
|
}
|
||
|
|
default {
|
||
|
|
error [format $err(unknownOpt) [lindex $args $i]]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# Validate the parameters
|
||
|
|
if {![llength $opts(-name)]} {
|
||
|
|
error [format $err(valueMissing) "-name"]
|
||
|
|
}
|
||
|
|
if {![llength $opts(-version)]} {
|
||
|
|
error [format $err(valueMissing) "-version"]
|
||
|
|
}
|
||
|
|
|
||
|
|
if {!([llength $opts(-source)] || [llength $opts(-load)])} {
|
||
|
|
error $err(noLoadOrSource)
|
||
|
|
}
|
||
|
|
|
||
|
|
# OK, now everything is good. Generate the package ifneeded statment.
|
||
|
|
set cmdline "package ifneeded $opts(-name) $opts(-version) "
|
||
|
|
|
||
|
|
set cmdList {}
|
||
|
|
set lazyFileList {}
|
||
|
|
|
||
|
|
# Handle -load and -source specs
|
||
|
|
foreach key {load source} {
|
||
|
|
foreach filespec $opts(-$key) {
|
||
|
|
lassign $filespec filename proclist
|
||
|
|
|
||
|
|
if { [llength $proclist] == 0 } {
|
||
|
|
set cmd "\[list $key \[file join \$dir [list $filename]\]\]"
|
||
|
|
lappend cmdList $cmd
|
||
|
|
} else {
|
||
|
|
lappend lazyFileList [list $filename $key $proclist]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if {[llength $lazyFileList]} {
|
||
|
|
lappend cmdList "\[list tclPkgSetup \$dir $opts(-name)\
|
||
|
|
$opts(-version) [list $lazyFileList]\]"
|
||
|
|
}
|
||
|
|
append cmdline [join $cmdList "\\n"]
|
||
|
|
return $cmdline
|
||
|
|
}
|
||
|
|
|
||
|
|
interp alias {} ::pkg::create {} ::tcl::Pkg::Create
|