Output file generated at very end rather than at beginning.

Output is produced to a temporary file (.tmp) and then renamed at
very end if operation is succesful.

diff --git a/src/charconv.tcl b/src/charconv.tcl
index 4412c2a..f09b82e 100644 (file)
--- a/src/charconv.tcl
+++ b/src/charconv.tcl
@@ -414,7 +414,7 @@ if {![info exists ifiles]} {
     usage
 }
 
-set ofilehandle [open $ofile w]
+set ofilehandle [open ${ofile}.tmp w]
 preamble_trie $ofilehandle $ifiles $ofile
 
 foreach ifile $ifiles {
@@ -422,4 +422,6 @@ foreach ifile $ifiles {
 }
 close $ofilehandle
 
+file rename -force ${ofile}.tmp ${ofile}
+