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- #
- # buildidx.tcl --
- #
- # Code to build Tcl package library. Defines the proc `buildpackageindex'.
- #
- #------------------------------------------------------------------------------
- # Copyright 1992-1993 Karl Lehenbauer and Mark Diekhans.
- #
- # Permission to use, copy, modify, and distribute this software and its
- # documentation for any purpose and without fee is hereby granted, provided
- # that the above copyright notice appear in all copies. Karl Lehenbauer and
- # Mark Diekhans make no representations about the suitability of this
- # software for any purpose. It is provided "as is" without express or
- # implied warranty.
- #------------------------------------------------------------------------------
- # $Id: buildidx.tcl,v 1.3 1995/01/26 10:51:25 zibi Exp $
- #------------------------------------------------------------------------------
- #
-
- #------------------------------------------------------------------------------
- # The following code passes around a array containing information about a
- # package. The following fields are defined
- #
- # o name - The name of the package.
- # o offset - The byte offset of the package in the file.
- # o procs - The list of entry point procedures defined for the package.
- #------------------------------------------------------------------------------
-
- #------------------------------------------------------------------------------
- # Write a line to the index file describing the package.
- #
- proc TCLSH:PutIdxEntry {outfp pkgInfo endOffset} {
- puts $outfp [concat [keylget pkgInfo name] \
- [keylget pkgInfo offset] \
- [expr {$endOffset - [keylget pkgInfo offset] - 1}] \
- [keylget pkgInfo procs]]
- }
-
- #------------------------------------------------------------------------------
- # Parse a package header found by a scan match. Handle backslashed
- # continuation lines.
- #
- proc TCLSH:ParsePkgHeader matchInfoVar {
- upvar $matchInfoVar matchInfo
-
- set line [string trimright $matchInfo(line)]
- while {[string match {*\\} $line]} {
- set line [csubstr $line 0 [expr [clength $line]-1]]
- append line " " [string trimright [gets $matchInfo(handle)]]
- }
-
- keylset pkgInfo name [lindex $line 1]
- keylset pkgInfo offset [tell $matchInfo(handle)]
- keylset pkgInfo procs [lrange $line 2 end]
- return $pkgInfo
- }
-
- #------------------------------------------------------------------------------
- # Do the actual work of creating a package library index from a library file.
- #
- proc TCLSH:CreateLibIndex {libName} {
-
- if {[file extension $libName] != ".tlib"} {
- error "Package library `$libName' does not have the extension `.tlib'"
- }
- set idxName "[file root $libName].tndx"
-
- unlink -nocomplain $idxName
- set libFH [open $libName r]
- set idxFH [open $idxName w]
- set packageCnt 0
-
- set contectHdl [scancontext create]
-
- scanmatch $contectHdl "^#@package: " {
- if {[llength $matchInfo(line)] < 2} {
- error "invalid package header \"$matchInfo(line)\""
- }
- if ![lempty $pkgInfo] {
- TCLSH:PutIdxEntry $idxFH $pkgInfo $matchInfo(offset)
- }
- set pkgInfo [TCLSH:ParsePkgHeader matchInfo]
- incr packageCnt
- }
-
- scanmatch $contectHdl "^#@packend" {
- if [lempty $pkgInfo] {
- error "#@packend without #@package in $libName"
- }
- TCLSH:PutIdxEntry $idxFH $pkgInfo $matchInfo(offset)
- set pkgInfo {}
- }
-
- set pkgInfo {}
- if {[catch {
- scanfile $contectHdl $libFH
- if {$packageCnt == 0} {
- error "No #@package definitions found in $libName"
- }
- } msg] != 0} {
- global errorInfo errorCode
- close $libFH
- close $idxFH
- unlink -nocomplain $idxName
- error $msg $errorInfo $errorCode
- }
- if ![lempty $pkgInfo] {
- TCLSH:PutIdxEntry $idxFH $pkgInfo [tell $libFH]
- }
- close $libFH
- close $idxFH
-
- scancontext delete $contectHdl
-
- # Set mode and ownership of the index to be the same as the library.
- # Ignore errors if you can't set the ownership.
-
- file stat $libName statInfo
- chmod $statInfo(mode) $idxName
- catch {
- chown [list $statInfo(uid) $statInfo(gid)] $idxName
- }
- }
-
- #------------------------------------------------------------------------------
- # Create a package library index from a library file.
- #
- proc buildpackageindex {libfilelist} {
- foreach libfile $libfilelist {
- set status [catch {
- TCLSH:CreateLibIndex $libfile
- } errmsg]
- if {$status != 0} {
- global errorInfo errorCode
- error "building package index for `$libfile' failed: $errmsg" \
- $errorInfo $errorCode
- }
- }
- }
-
-