[demangler] write-protect non-canonical source
To try and avoid undesired changes to the non-canonical demangler
sources, change the cp-to-llvm script to (a) write-protect the target
files and (b) prepend 'do not edit' comments that are significant to
emacs[*], and hopefully humans.
Reviewed By: ChuanqiXu
Differential Revision: https://reviews.llvm.org/D118008
GitOrigin-RevId: 897d1bb659c2a23baed8ff4881960945125c40f7
diff --git a/src/demangle/cp-to-llvm.sh b/src/demangle/cp-to-llvm.sh
index 808abbc..e4342a0 100755
--- a/src/demangle/cp-to-llvm.sh
+++ b/src/demangle/cp-to-llvm.sh
@@ -5,7 +5,8 @@
set -e
-FILES="ItaniumDemangle.h StringView.h Utility.h README.txt"
+cd $(dirname $0)
+HDRS="ItaniumDemangle.h StringView.h Utility.h"
LLVM_DEMANGLE_DIR=$1
if [[ -z "$LLVM_DEMANGLE_DIR" ]]; then
@@ -21,7 +22,14 @@
echo
if [[ $ANSWER =~ ^[Yy]$ ]]; then
- for I in $FILES ; do
- cp $I $LLVM_DEMANGLE_DIR/$I
+ cp -f README.txt $LLVM_DEMANGLE_DIR
+ chmod -w $LLVM_DEMANGLE_DIR/README.txt
+ for I in $HDRS ; do
+ rm -f $LLVM_DEMANGLE_DIR/$I
+ cat - $I >$LLVM_DEMANGLE_DIR/$I <<EOF
+// Do not edit! -*- read-only -*-
+// See README.txt for instructions
+EOF
+ chmod -w $LLVM_DEMANGLE_DIR/$I
done
fi
