Saturday, November 5, 2016
Howto tcl copy file and check for error
Howto tcl copy file and check for error
# is there a better way to check if file copy worked or not in tcl?
proc fileCopy {sFrom sTo} {
set bUpdateFile 0
if {[catch {file stat "$sFrom" aFromStat} r]} {
FAIL "no from file? $sFrom $::errorCode $::errorInfo"
return
}
if {[catch {file stat "$sTo" aToStat} r]} {
# no to file to compare with, do update
set bUpdateFile 1
}
if {! $bUpdateFile} {
# compare file stat info: mtime and size
#log "stat from=[parray aFromStat] to=[parray aToStat] "
if {$aFromStat(mtime) != $aToStat(mtime) || $aFromStat(size) != $aToStat(size)} {
set bUpdateFile 1
log "stat mtime from=$aFromStat(mtime) to=$aToStat(mtime)"
log "stat size from=$aFromStat(size) to=$aToStat(size)"
} else {
log "no update needed. stat from=[parray aFromStat {mtime,size}] to=[parray aToStat {mtime,size}]"
# did nothing
PASS "update not needed to:$sTo"
}
}
if {$bUpdateFile} {
log "file copy -force $sFrom $sTo"
if {[catch {file copy -force "$sFrom" "$sTo"} sError]} {
FAIL "file copy failed: err:$sError to:$sTo"
}
# check for fail (mutters silly tcl manual!? how check success of file copy?)
if {[catch {file stat "$sTo" aNewToStat} r]} {
FAIL "cannot check file stat for copied file? to:$sTo"
} else {
if {$aFromStat(mtime) == $aNewToStat(mtime) && $aFromStat(size) == $aNewToStat(size)} {
PASS "update done to:$sTo"
} else {
FAIL "update fstat doesnt match to:$sTo"
parray aFromStat
parray aNewToStat
}
}
}
}
proc log {s} {
puts "$s"
}
proc PASS {s} {
log "PASS: $s"
}
proc FAIL {s} {
log "FAIL: $s"
}
exec touch a.txt
fileCopy a.txt b.txt
exec rm -f ne.txt
fileCopy ne.txt b.txt
## OH! you must catch calls to file copy!
fileCopy a.txt notexistdir/fu/b.txt
fileCopy a.txt "K:/notexistdir/fu/b.txt"
log "test finish"
OUTPUT:
$ tclsh Tests/OLC/fileCopy.tcl
stat mtime from=1271431590 to=1271431430
stat size from=0 to=0
file copy -force a.txt b.txt
PASS: update done to:b.txt
FAIL: no from file? ne.txt POSIX ENOENT {no such file or directory} could not read "ne.txt": no such file or directory
while executing
"file stat "$sFrom" aFromStat"
file copy -force a.txt notexistdir/fu/b.txt
FAIL: file copy failed: err:error copying "a.txt" to "notexistdir/fu/b.txt": no such file or directory to:notexistdir/fu/b.txt
FAIL: cannot check file stat for copied file? to:notexistdir/fu/b.txt
file copy -force a.txt K:/notexistdir/fu/b.txt
FAIL: file copy failed: err:error copying "a.txt" to "K:/notexistdir/fu/b.txt": no such file or directory to:K:/notexistdir/fu/b.txt
FAIL: cannot check file stat for copied file? to:K:/notexistdir/fu/b.txt
test finish
http://www.google.ie/search?q=tcl+file+copy
http://www.tcl.tk/man/tcl8.0/TclCmd/file.htm
http://wiki.tcl.tk/10068http://tmml.sourceforge.net/doc/tcl/file.html
http://www.beedub.com/book/2nd/unix.doc.html
http://antirez.com/articoli/tclmisunderstood.html
Available link for download