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|
#!/bin/sh
#
# installFile.tcl - a Tcl version of install-sh
# that copies a file and preserves its permission bits.
# This also optimizes out installation of existing files
# that have the same size and time stamp as the source.
#
# \
exec tclsh8.3 "$0" ${1+"$@"}
set doCopy 0 ;# Rename files instead of copy
set doStrip 0 ;# Strip the symbols from installed copy
set verbose 0
set src ""
set dst ""
# Process command line arguments, compatible with install-sh
for {set i 0} {$i < $argc} {incr i} {
set arg [lindex $argv $i]
switch -- $arg {
-c {
set doCopy 1
}
-m {
incr i
# Assume UNIX standard "644", etc, so force Tcl to think octal
set permissions 0[lindex $argv $i]
}
-o {
incr i
set owner [lindex $argv $i]
}
-g {
incr i
set group [lindex $argv $i]
}
-s {
set doStrip 1
}
-v {
set verbose 1
}
default {
set src $arg
incr i
set dst [lindex $argv $i]
break
}
}
}
if {[string length $src] == 0} {
puts stderr "$argv0: no input file specified"
exit 1
}
if {[string length $dst] == 0} {
puts stderr "$argv0: no destination file specified"
exit 1
}
# Compatibility with CYGNUS-style pathnames
regsub {^/(cygdrive)?/(.)/(.*)} $src {\2:/\3} src
regsub {^/(cygdrive)?/(.)/(.*)} $dst {\2:/\3} dst
if {$verbose && $doStrip} {
puts stderr "Ignoring -s (strip) option for $dst"
}
if {[file isdirectory $dst]} {
set dst [file join $dst [file tail $src]]
}
# Temporary file name
set dsttmp [file join [file dirname $dst] #inst.[pid]#]
# Optimize out install if the file already exists
set actions ""
if {[file exists $dst] &&
([file mtime $src] == [file mtime $dst]) &&
([file size $src] == [file size $dst])} {
# Looks like the same file, so don't bother to copy.
# Set dsttmp in case we still need to tweak mode, group, etc.
set dsttmp $dst
lappend actions "already installed"
} else {
if {"[file type $src]" == "link"} {
# Perfom a true copy.
set in [open $src r]
set out [open $dsttmp w]
fcopy $in $out
close $in
close $out
} else {
file copy -force $src $dsttmp
}
lappend actions copied
}
# update the modification time of the target file
file mtime $dsttmp [clock seconds]
# At this point "$dsttmp" is installed, but might not have the
# right permissions and may need to be renamed.
foreach attrName {owner group permissions} {
upvar 0 $attrName attr
if {[info exists attr]} {
if {![catch {file attributes $dsttmp -$attrName} dstattr]} {
# This system supports "$attrName" kind of attributes
if {($attr != $dstattr)} {
file attributes $dsttmp -$attrName $attr
lappend actions "set $attrName to $attr"
}
}
}
}
if {[string compare $dst $dsttmp] != 0} {
file rename -force $dsttmp $dst
}
if {$verbose} {
puts stderr "$dst: [join $actions ", "]"
}
exit 0
|
