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Diffstat (limited to 'tcl8.6/library/platform/shell.tcl')
| -rw-r--r-- | tcl8.6/library/platform/shell.tcl | 241 |
1 files changed, 0 insertions, 241 deletions
diff --git a/tcl8.6/library/platform/shell.tcl b/tcl8.6/library/platform/shell.tcl deleted file mode 100644 index 6eb9691..0000000 --- a/tcl8.6/library/platform/shell.tcl +++ /dev/null @@ -1,241 +0,0 @@ - -# -*- tcl -*- -# ### ### ### ######### ######### ######### -## Overview - -# Higher-level commands which invoke the functionality of this package -# for an arbitrary tcl shell (tclsh, wish, ...). This is required by a -# repository as while the tcl shell executing packages uses the same -# platform in general as a repository application there can be -# differences in detail (i.e. 32/64 bit builds). - -# ### ### ### ######### ######### ######### -## Requirements - -package require platform -namespace eval ::platform::shell {} - -# ### ### ### ######### ######### ######### -## Implementation - -# -- platform::shell::generic - -proc ::platform::shell::generic {shell} { - # Argument is the path to a tcl shell. - - CHECK $shell - LOCATE base out - - set code {} - # Forget any pre-existing platform package, it might be in - # conflict with this one. - lappend code {package forget platform} - # Inject our platform package - lappend code [list source $base] - # Query and print the architecture - lappend code {puts [platform::generic]} - # And done - lappend code {exit 0} - - set arch [RUN $shell [join $code \n]] - - if {$out} {file delete -force $base} - return $arch -} - -# -- platform::shell::identify - -proc ::platform::shell::identify {shell} { - # Argument is the path to a tcl shell. - - CHECK $shell - LOCATE base out - - set code {} - # Forget any pre-existing platform package, it might be in - # conflict with this one. - lappend code {package forget platform} - # Inject our platform package - lappend code [list source $base] - # Query and print the architecture - lappend code {puts [platform::identify]} - # And done - lappend code {exit 0} - - set arch [RUN $shell [join $code \n]] - - if {$out} {file delete -force $base} - return $arch -} - -# -- platform::shell::platform - -proc ::platform::shell::platform {shell} { - # Argument is the path to a tcl shell. - - CHECK $shell - - set code {} - lappend code {puts $tcl_platform(platform)} - lappend code {exit 0} - - return [RUN $shell [join $code \n]] -} - -# ### ### ### ######### ######### ######### -## Internal helper commands. - -proc ::platform::shell::CHECK {shell} { - if {![file exists $shell]} { - return -code error "Shell \"$shell\" does not exist" - } - if {![file executable $shell]} { - return -code error "Shell \"$shell\" is not executable (permissions)" - } - return -} - -proc ::platform::shell::LOCATE {bv ov} { - upvar 1 $bv base $ov out - - # Locate the platform package for injection into the specified - # shell. We are using package management to find it, whereever it - # is, instead of using hardwired relative paths. This allows us to - # install the two packages as TMs without breaking the code - # here. If the found package is wrapped we copy the code somewhere - # where the spawned shell will be able to read it. - - # This code is brittle, it needs has to adapt to whatever changes - # are made to the TM code, i.e. the provide statement generated by - # tm.tcl - - set pl [package ifneeded platform [package require platform]] - set base [lindex $pl end] - - set out 0 - if {[lindex [file system $base]] ne "native"} { - set temp [TEMP] - file copy -force $base $temp - set base $temp - set out 1 - } - return -} - -proc ::platform::shell::RUN {shell code} { - set c [TEMP] - set cc [open $c w] - puts $cc $code - close $cc - - set e [TEMP] - - set code [catch { - exec $shell $c 2> $e - } res] - - file delete $c - - if {$code} { - append res \n[read [set chan [open $e r]]][close $chan] - file delete $e - return -code error "Shell \"$shell\" is not executable ($res)" - } - - file delete $e - return $res -} - -proc ::platform::shell::TEMP {} { - set prefix platform - - # This code is copied out of Tcllib's fileutil package. - # (TempFile/tempfile) - - set tmpdir [DIR] - - set chars "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789" - set nrand_chars 10 - set maxtries 10 - set access [list RDWR CREAT EXCL TRUNC] - set permission 0600 - set channel "" - set checked_dir_writable 0 - set mypid [pid] - for {set i 0} {$i < $maxtries} {incr i} { - set newname $prefix - for {set j 0} {$j < $nrand_chars} {incr j} { - append newname [string index $chars \ - [expr {int(rand()*62)}]] - } - set newname [file join $tmpdir $newname] - if {[file exists $newname]} { - after 1 - } else { - if {[catch {open $newname $access $permission} channel]} { - if {!$checked_dir_writable} { - set dirname [file dirname $newname] - if {![file writable $dirname]} { - return -code error "Directory $dirname is not writable" - } - set checked_dir_writable 1 - } - } else { - # Success - close $channel - return [file normalize $newname] - } - } - } - if {$channel ne ""} { - return -code error "Failed to open a temporary file: $channel" - } else { - return -code error "Failed to find an unused temporary file name" - } -} - -proc ::platform::shell::DIR {} { - # This code is copied out of Tcllib's fileutil package. - # (TempDir/tempdir) - - global tcl_platform env - - set attempdirs [list] - - foreach tmp {TMPDIR TEMP TMP} { - if { [info exists env($tmp)] } { - lappend attempdirs $env($tmp) - } - } - - switch $tcl_platform(platform) { - windows { - lappend attempdirs "C:\\TEMP" "C:\\TMP" "\\TEMP" "\\TMP" - } - macintosh { - set tmpdir $env(TRASH_FOLDER) ;# a better place? - } - default { - lappend attempdirs \ - [file join / tmp] \ - [file join / var tmp] \ - [file join / usr tmp] - } - } - - lappend attempdirs [pwd] - - foreach tmp $attempdirs { - if { [file isdirectory $tmp] && [file writable $tmp] } { - return [file normalize $tmp] - } - } - - # Fail if nothing worked. - return -code error "Unable to determine a proper directory for temporary files" -} - -# ### ### ### ######### ######### ######### -## Ready - -package provide platform::shell 1.1.4 |