diff -r 000000000000 -r bde4ae8d615e os/persistentdata/persistentstorage/sqlite3api/TEST/TCL/tcldistribution/library/auto.tcl --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/os/persistentdata/persistentstorage/sqlite3api/TEST/TCL/tcldistribution/library/auto.tcl Fri Jun 15 03:10:57 2012 +0200 @@ -0,0 +1,616 @@ +# auto.tcl -- +# +# utility procs formerly in init.tcl dealing with auto execution +# of commands and can be auto loaded themselves. +# +# RCS: @(#) $Id: auto.tcl,v 1.12.2.10 2005/07/23 03:31:41 dgp Exp $ +# +# 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 procedures that are listed in the auto-load index +# except those defined in this file. +# +# Arguments: +# None. + +proc auto_reset {} { + global auto_execs auto_index auto_oldpath + foreach p [info procs] { + if {[info exists auto_index($p)] && ![string match auto_* $p] + && ([lsearch -exact {unknown pkg_mkIndex tclPkgSetup + tcl_findLibrary pkg_compareExtension + tclPkgUnknown tcl::MacOSXPkgUnknown + tcl::MacPkgUnknown} $p] < 0)} { + rename $p {} + } + } + unset -nocomplain auto_execs auto_index auto_oldpath +} + +# 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 env errorInfo + + 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. + # + # Only do this for Tcl 8.5+, when Tcl_RegsiterConfig() is available. + #if {[catch { + # ::${basename}::pkgconfig get scriptdir,runtime + #} value] == 0} { + # lappend dirs $value + #} + + # 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) + 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] + + # Remaining locations are out of date (when relevant, they ought + # to be covered by the $::auto_path seach above). + # + # ../../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) + # + # For the sake of extra compatibility safety, we keep adding these + # paths during the 8.4.* release series. + if {1} { + 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 { + # For Tcl 8.4.9, we've disabled the use of [file normalize] here. + # This means that two different path names that are the same path + # in normalized form, will both remain on the search path. There + # should be no harm in that, just a bit more file system access + # than is strictly necessary. + # + # [file normalize] has been disabled because of reports it has + # caused difficulties with the freewrap utility. To keep + # compatibility with freewrap's needs, we'll keep this disabled + # throughout the 8.4.x (x >= 9) releases. See Bug 1072136. + if {1 || [interp issafe]} { + set norm $i + } else { + set norm [file normalize $i] + } + if {[info exists seen($norm)]} { continue } + set seen($norm) "" + lappend uniqdirs $i + } + set dirs $uniqdirs + foreach i $dirs { + 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 $file]} msg]} { + return + } else { + append errors "$file: $msg\n$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} { + global errorCode errorInfo + + if {[interp issafe]} { + error "can't generate index within safe interpreter" + } + + 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] == 0} { + set args *.tcl + } + + auto_mkindex_parser::init + foreach file [eval [linsert $args 0 glob --]] { + if {[catch {auto_mkindex_parser::mkindex $file} msg] == 0} { + append index $msg + } else { + set code $errorCode + set info $errorInfo + cd $oldDir + error $msg $info $code + } + } + 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} { + global errorCode errorInfo + 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] == 0} { + set args *.tcl + } + foreach file [eval [linsert $args 0 glob --]] { + 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 $f + } msg] + if {$error} { + set code $errorCode + set info $errorInfo + catch {close $f} + cd $oldDir + error $msg $info $code + } + } + set f "" + set error [catch { + set f [open tclIndex w] + puts -nonewline $f $index + close $f + cd $oldDir + } msg] + if {$error} { + set code $errorCode + set info $errorInfo + catch {close $f} + cd $oldDir + error $msg $info $code + } +} + +# 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 + + 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 + $parser invokehidden namespace delete :: + $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 "$ \u0000" $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 "\u0000 $" $name] +} + +# 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} { + variable index + variable scriptFile + # Do some fancy reformatting on the "source" call to handle platform + # differences with respect to pathnames. Use format just so that the + # command is a little easier to read (otherwise it'd be full of + # backslashed dollar signs, etc. + append index [list set auto_index([fullname $name])] \ + [format { [list source [file join $dir %s]]} \ + [file split $scriptFile]] "\n" +} + +# 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 { + if {![catch {package require tbcload}]} { + 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} { + variable index + variable scriptFile + # Do some nice reformatting of the "source" call, to get around + # path differences on different platforms. We use the format + # command just so that the code is a little easier to read. + append index [list set auto_index([fullname $name])] \ + [format { [list source [file join $dir %s]]} \ + [file split $scriptFile]] "\n" + } + } +} + +# 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"} + } + } +} + +return