diff options
Diffstat (limited to 'tcl8.6/library/auto.tcl')
| -rw-r--r-- | tcl8.6/library/auto.tcl | 646 |
1 files changed, 0 insertions, 646 deletions
diff --git a/tcl8.6/library/auto.tcl b/tcl8.6/library/auto.tcl deleted file mode 100644 index a7a8979..0000000 --- a/tcl8.6/library/auto.tcl +++ /dev/null @@ -1,646 +0,0 @@ -# auto.tcl -- -# -# utility procs formerly in init.tcl dealing with auto execution of commands -# and can be auto loaded themselves. -# -# Copyright (c) 1991-1993 The Regents of the University of California. -# Copyright (c) 1994-1998 Sun Microsystems, Inc. -# -# See the file "license.terms" for information on usage and redistribution of -# this file, and for a DISCLAIMER OF ALL WARRANTIES. -# - -# auto_reset -- -# -# Destroy all cached information for auto-loading and auto-execution, so that -# the information gets recomputed the next time it's needed. Also delete any -# commands that are listed in the auto-load index. -# -# Arguments: -# None. - -proc auto_reset {} { - global auto_execs auto_index auto_path - if {[array exists auto_index]} { - foreach cmdName [array names auto_index] { - set fqcn [namespace which $cmdName] - if {$fqcn eq ""} { - continue - } - rename $fqcn {} - } - } - unset -nocomplain auto_execs auto_index ::tcl::auto_oldpath - if {[catch {llength $auto_path}]} { - set auto_path [list [info library]] - } elseif {[info library] ni $auto_path} { - lappend auto_path [info library] - } -} - -# tcl_findLibrary -- -# -# This is a utility for extensions that searches for a library directory -# using a canonical searching algorithm. A side effect is to source the -# initialization script and set a global library variable. -# -# Arguments: -# basename Prefix of the directory name, (e.g., "tk") -# version Version number of the package, (e.g., "8.0") -# patch Patchlevel of the package, (e.g., "8.0.3") -# initScript Initialization script to source (e.g., tk.tcl) -# enVarName environment variable to honor (e.g., TK_LIBRARY) -# varName Global variable to set when done (e.g., tk_library) - -proc tcl_findLibrary {basename version patch initScript enVarName varName} { - upvar #0 $varName the_library - global auto_path env tcl_platform - - set dirs {} - set errors {} - - # The C application may have hardwired a path, which we honor - - if {[info exists the_library] && $the_library ne ""} { - lappend dirs $the_library - } else { - # Do the canonical search - - # 1. From an environment variable, if it exists. Placing this first - # gives the end-user ultimate control to work-around any bugs, or - # to customize. - - if {[info exists env($enVarName)]} { - lappend dirs $env($enVarName) - } - - # 2. In the package script directory registered within the - # configuration of the package itself. - - catch { - lappend dirs [::${basename}::pkgconfig get scriptdir,runtime] - } - - # 3. Relative to auto_path directories. This checks relative to the - # Tcl library as well as allowing loading of libraries added to the - # auto_path that is not relative to the core library or binary paths. - foreach d $auto_path { - lappend dirs [file join $d $basename$version] - if {$tcl_platform(platform) eq "unix" - && $tcl_platform(os) eq "Darwin"} { - # 4. On MacOSX, check the Resources/Scripts subdir too - lappend dirs [file join $d $basename$version Resources Scripts] - } - } - - # 3. Various locations relative to the executable - # ../lib/foo1.0 (From bin directory in install hierarchy) - # ../../lib/foo1.0 (From bin/arch directory in install hierarchy) - # ../library (From unix directory in build hierarchy) - # - # Remaining locations are out of date (when relevant, they ought to be - # covered by the $::auto_path seach above) and disabled. - # - # ../../library (From unix/arch directory in build hierarchy) - # ../../foo1.0.1/library - # (From unix directory in parallel build hierarchy) - # ../../../foo1.0.1/library - # (From unix/arch directory in parallel build hierarchy) - - set parentDir [file dirname [file dirname [info nameofexecutable]]] - set grandParentDir [file dirname $parentDir] - lappend dirs [file join $parentDir lib $basename$version] - lappend dirs [file join $grandParentDir lib $basename$version] - lappend dirs [file join $parentDir library] - if {0} { - lappend dirs [file join $grandParentDir library] - lappend dirs [file join $grandParentDir $basename$patch library] - lappend dirs [file join [file dirname $grandParentDir] \ - $basename$patch library] - } - } - # uniquify $dirs in order - array set seen {} - foreach i $dirs { - # Make sure $i is unique under normalization. Avoid repeated [source]. - if {[interp issafe]} { - # Safe interps have no [file normalize]. - set norm $i - } else { - set norm [file normalize $i] - } - if {[info exists seen($norm)]} { - continue - } - set seen($norm) {} - - set the_library $i - set file [file join $i $initScript] - - # source everything when in a safe interpreter because we have a - # source command, but no file exists command - - if {[interp issafe] || [file exists $file]} { - if {![catch {uplevel #0 [list source $file]} msg opts]} { - return - } - append errors "$file: $msg\n" - append errors [dict get $opts -errorinfo]\n - } - } - unset -nocomplain the_library - set msg "Can't find a usable $initScript in the following directories: \n" - append msg " $dirs\n\n" - append msg "$errors\n\n" - append msg "This probably means that $basename wasn't installed properly.\n" - error $msg -} - - -# ---------------------------------------------------------------------- -# auto_mkindex -# ---------------------------------------------------------------------- -# The following procedures are used to generate the tclIndex file from Tcl -# source files. They use a special safe interpreter to parse Tcl source -# files, writing out index entries as "proc" commands are encountered. This -# implementation won't work in a safe interpreter, since a safe interpreter -# can't create the special parser and mess with its commands. - -if {[interp issafe]} { - return ;# Stop sourcing the file here -} - -# auto_mkindex -- -# Regenerate a tclIndex file from Tcl source files. Takes as argument the -# name of the directory in which the tclIndex file is to be placed, followed -# by any number of glob patterns to use in that directory to locate all of the -# relevant files. -# -# Arguments: -# dir - Name of the directory in which to create an index. - -# args - Any number of additional arguments giving the names of files -# within dir. If no additional are given auto_mkindex will look -# for *.tcl. - -proc auto_mkindex {dir args} { - if {[interp issafe]} { - error "can't generate index within safe interpreter" - } - - set oldDir [pwd] - cd $dir - - append index "# Tcl autoload index file, version 2.0\n" - append index "# This file is generated by the \"auto_mkindex\" command\n" - append index "# and sourced to set up indexing information for one or\n" - append index "# more commands. Typically each line is a command that\n" - append index "# sets an element in the auto_index array, where the\n" - append index "# element name is the name of a command and the value is\n" - append index "# a script that loads the command.\n\n" - if {![llength $args]} { - set args *.tcl - } - - auto_mkindex_parser::init - foreach file [lsort [glob -- {*}$args]] { - try { - append index [auto_mkindex_parser::mkindex $file] - } on error {msg opts} { - cd $oldDir - return -options $opts $msg - } - } - auto_mkindex_parser::cleanup - - set fid [open "tclIndex" w] - puts -nonewline $fid $index - close $fid - cd $oldDir -} - -# Original version of auto_mkindex that just searches the source code for -# "proc" at the beginning of the line. - -proc auto_mkindex_old {dir args} { - set oldDir [pwd] - cd $dir - set dir [pwd] - append index "# Tcl autoload index file, version 2.0\n" - append index "# This file is generated by the \"auto_mkindex\" command\n" - append index "# and sourced to set up indexing information for one or\n" - append index "# more commands. Typically each line is a command that\n" - append index "# sets an element in the auto_index array, where the\n" - append index "# element name is the name of a command and the value is\n" - append index "# a script that loads the command.\n\n" - if {![llength $args]} { - set args *.tcl - } - foreach file [lsort [glob -- {*}$args]] { - set f "" - set error [catch { - set f [open $file] - while {[gets $f line] >= 0} { - if {[regexp {^proc[ ]+([^ ]*)} $line match procName]} { - set procName [lindex [auto_qualify $procName "::"] 0] - append index "set [list auto_index($procName)]" - append index " \[list source \[file join \$dir [list $file]\]\]\n" - } - } - close $f - } msg opts] - if {$error} { - catch {close $f} - cd $oldDir - return -options $opts $msg - } - } - set f "" - set error [catch { - set f [open tclIndex w] - puts -nonewline $f $index - close $f - cd $oldDir - } msg opts] - if {$error} { - catch {close $f} - cd $oldDir - error $msg $info $code - return -options $opts $msg - } -} - -# Create a safe interpreter that can be used to parse Tcl source files -# generate a tclIndex file for autoloading. This interp contains commands for -# things that need index entries. Each time a command is executed, it writes -# an entry out to the index file. - -namespace eval auto_mkindex_parser { - variable parser "" ;# parser used to build index - variable index "" ;# maintains index as it is built - variable scriptFile "" ;# name of file being processed - variable contextStack "" ;# stack of namespace scopes - variable imports "" ;# keeps track of all imported cmds - variable initCommands ;# list of commands that create aliases - if {![info exists initCommands]} { - set initCommands [list] - } - - proc init {} { - variable parser - variable initCommands - - if {![interp issafe]} { - set parser [interp create -safe] - $parser hide info - $parser hide rename - $parser hide proc - $parser hide namespace - $parser hide eval - $parser hide puts - foreach ns [$parser invokehidden namespace children ::] { - # MUST NOT DELETE "::tcl" OR BAD THINGS HAPPEN! - if {$ns eq "::tcl"} continue - $parser invokehidden namespace delete $ns - } - foreach cmd [$parser invokehidden info commands ::*] { - $parser invokehidden rename $cmd {} - } - $parser invokehidden proc unknown {args} {} - - # We'll need access to the "namespace" command within the - # interp. Put it back, but move it out of the way. - - $parser expose namespace - $parser invokehidden rename namespace _%@namespace - $parser expose eval - $parser invokehidden rename eval _%@eval - - # Install all the registered psuedo-command implementations - - foreach cmd $initCommands { - eval $cmd - } - } - } - proc cleanup {} { - variable parser - interp delete $parser - unset parser - } -} - -# auto_mkindex_parser::mkindex -- -# -# Used by the "auto_mkindex" command to create a "tclIndex" file for the given -# Tcl source file. Executes the commands in the file, and handles things like -# the "proc" command by adding an entry for the index file. Returns a string -# that represents the index file. -# -# Arguments: -# file Name of Tcl source file to be indexed. - -proc auto_mkindex_parser::mkindex {file} { - variable parser - variable index - variable scriptFile - variable contextStack - variable imports - - set scriptFile $file - - set fid [open $file] - set contents [read $fid] - close $fid - - # There is one problem with sourcing files into the safe interpreter: - # references like "$x" will fail since code is not really being executed - # and variables do not really exist. To avoid this, we replace all $ with - # \0 (literally, the null char) later, when getting proc names we will - # have to reverse this replacement, in case there were any $ in the proc - # name. This will cause a problem if somebody actually tries to have a \0 - # in their proc name. Too bad for them. - set contents [string map [list \$ \0] $contents] - - set index "" - set contextStack "" - set imports "" - - $parser eval $contents - - foreach name $imports { - catch {$parser eval [list _%@namespace forget $name]} - } - return $index -} - -# auto_mkindex_parser::hook command -# -# Registers a Tcl command to evaluate when initializing the slave interpreter -# used by the mkindex parser. The command is evaluated in the master -# interpreter, and can use the variable auto_mkindex_parser::parser to get to -# the slave - -proc auto_mkindex_parser::hook {cmd} { - variable initCommands - - lappend initCommands $cmd -} - -# auto_mkindex_parser::slavehook command -# -# Registers a Tcl command to evaluate when initializing the slave interpreter -# used by the mkindex parser. The command is evaluated in the slave -# interpreter. - -proc auto_mkindex_parser::slavehook {cmd} { - variable initCommands - - # The $parser variable is defined to be the name of the slave interpreter - # when this command is used later. - - lappend initCommands "\$parser eval [list $cmd]" -} - -# auto_mkindex_parser::command -- -# -# Registers a new command with the "auto_mkindex_parser" interpreter that -# parses Tcl files. These commands are fake versions of things like the -# "proc" command. When you execute them, they simply write out an entry to a -# "tclIndex" file for auto-loading. -# -# This procedure allows extensions to register their own commands with the -# auto_mkindex facility. For example, a package like [incr Tcl] might -# register a "class" command so that class definitions could be added to a -# "tclIndex" file for auto-loading. -# -# Arguments: -# name Name of command recognized in Tcl files. -# arglist Argument list for command. -# body Implementation of command to handle indexing. - -proc auto_mkindex_parser::command {name arglist body} { - hook [list auto_mkindex_parser::commandInit $name $arglist $body] -} - -# auto_mkindex_parser::commandInit -- -# -# This does the actual work set up by auto_mkindex_parser::command. This is -# called when the interpreter used by the parser is created. -# -# Arguments: -# name Name of command recognized in Tcl files. -# arglist Argument list for command. -# body Implementation of command to handle indexing. - -proc auto_mkindex_parser::commandInit {name arglist body} { - variable parser - - set ns [namespace qualifiers $name] - set tail [namespace tail $name] - if {$ns eq ""} { - set fakeName [namespace current]::_%@fake_$tail - } else { - set fakeName [namespace current]::[string map {:: _} _%@fake_$name] - } - proc $fakeName $arglist $body - - # YUK! Tcl won't let us alias fully qualified command names, so we can't - # handle names like "::itcl::class". Instead, we have to build procs with - # the fully qualified names, and have the procs point to the aliases. - - if {[string match *::* $name]} { - set exportCmd [list _%@namespace export [namespace tail $name]] - $parser eval [list _%@namespace eval $ns $exportCmd] - - # The following proc definition does not work if you want to tolerate - # space or something else diabolical in the procedure name, (i.e., - # space in $alias). The following does not work: - # "_%@eval {$alias} \$args" - # because $alias gets concat'ed to $args. The following does not work - # because $cmd is somehow undefined - # "set cmd {$alias} \; _%@eval {\$cmd} \$args" - # A gold star to someone that can make test autoMkindex-3.3 work - # properly - - set alias [namespace tail $fakeName] - $parser invokehidden proc $name {args} "_%@eval {$alias} \$args" - $parser alias $alias $fakeName - } else { - $parser alias $name $fakeName - } - return -} - -# auto_mkindex_parser::fullname -- -# -# Used by commands like "proc" within the auto_mkindex parser. Returns the -# qualified namespace name for the "name" argument. If the "name" does not -# start with "::", elements are added from the current namespace stack to -# produce a qualified name. Then, the name is examined to see whether or not -# it should really be qualified. If the name has more than the leading "::", -# it is returned as a fully qualified name. Otherwise, it is returned as a -# simple name. That way, the Tcl autoloader will recognize it properly. -# -# Arguments: -# name - Name that is being added to index. - -proc auto_mkindex_parser::fullname {name} { - variable contextStack - - if {![string match ::* $name]} { - foreach ns $contextStack { - set name "${ns}::$name" - if {[string match ::* $name]} { - break - } - } - } - - if {[namespace qualifiers $name] eq ""} { - set name [namespace tail $name] - } elseif {![string match ::* $name]} { - set name "::$name" - } - - # Earlier, mkindex replaced all $'s with \0. Now, we have to reverse that - # replacement. - return [string map [list \0 \$] $name] -} - -# auto_mkindex_parser::indexEntry -- -# -# Used by commands like "proc" within the auto_mkindex parser to add a -# correctly-quoted entry to the index. This is shared code so it is done -# *right*, in one place. -# -# Arguments: -# name - Name that is being added to index. - -proc auto_mkindex_parser::indexEntry {name} { - variable index - variable scriptFile - - # We convert all metacharacters to their backslashed form, and pre-split - # the file name that we know about (which will be a proper list, and so - # correctly quoted). - - set name [string range [list \}[fullname $name]] 2 end] - set filenameParts [file split $scriptFile] - - append index [format \ - {set auto_index(%s) [list source [file join $dir %s]]%s} \ - $name $filenameParts \n] - return -} - -if {[llength $::auto_mkindex_parser::initCommands]} { - return -} - -# Register all of the procedures for the auto_mkindex parser that will build -# the "tclIndex" file. - -# AUTO MKINDEX: proc name arglist body -# Adds an entry to the auto index list for the given procedure name. - -auto_mkindex_parser::command proc {name args} { - indexEntry $name -} - -# Conditionally add support for Tcl byte code files. There are some tricky -# details here. First, we need to get the tbcload library initialized in the -# current interpreter. We cannot load tbcload into the slave until we have -# done so because it needs access to the tcl_patchLevel variable. Second, -# because the package index file may defer loading the library until we invoke -# a command, we need to explicitly invoke auto_load to force it to be loaded. -# This should be a noop if the package has already been loaded - -auto_mkindex_parser::hook { - try { - package require tbcload - } on error {} { - # OK, don't have it so do nothing - } on ok {} { - if {[namespace which -command tbcload::bcproc] eq ""} { - auto_load tbcload::bcproc - } - load {} tbcload $auto_mkindex_parser::parser - - # AUTO MKINDEX: tbcload::bcproc name arglist body - # Adds an entry to the auto index list for the given pre-compiled - # procedure name. - - auto_mkindex_parser::commandInit tbcload::bcproc {name args} { - indexEntry $name - } - } -} - -# AUTO MKINDEX: namespace eval name command ?arg arg...? -# Adds the namespace name onto the context stack and evaluates the associated -# body of commands. -# -# AUTO MKINDEX: namespace import ?-force? pattern ?pattern...? -# Performs the "import" action in the parser interpreter. This is important -# for any commands contained in a namespace that affect the index. For -# example, a script may say "itcl::class ...", or it may import "itcl::*" and -# then say "class ...". This procedure does the import operation, but keeps -# track of imported patterns so we can remove the imports later. - -auto_mkindex_parser::command namespace {op args} { - switch -- $op { - eval { - variable parser - variable contextStack - - set name [lindex $args 0] - set args [lrange $args 1 end] - - set contextStack [linsert $contextStack 0 $name] - $parser eval [list _%@namespace eval $name] $args - set contextStack [lrange $contextStack 1 end] - } - import { - variable parser - variable imports - foreach pattern $args { - if {$pattern ne "-force"} { - lappend imports $pattern - } - } - catch {$parser eval "_%@namespace import $args"} - } - ensemble { - variable parser - variable contextStack - if {[lindex $args 0] eq "create"} { - set name ::[join [lreverse $contextStack] ::] - catch { - set name [dict get [lrange $args 1 end] -command] - if {![string match ::* $name]} { - set name ::[join [lreverse $contextStack] ::]$name - } - regsub -all ::+ $name :: name - } - # create artifical proc to force an entry in the tclIndex - $parser eval [list ::proc $name {} {}] - } - } - } -} - -# AUTO MKINDEX: oo::class create name ?definition? -# Adds an entry to the auto index list for the given class name. -auto_mkindex_parser::command oo::class {op name {body ""}} { - if {$op eq "create"} { - indexEntry $name - } -} -auto_mkindex_parser::command class {op name {body ""}} { - if {$op eq "create"} { - indexEntry $name - } -} - -return |