Polymer: make reproduce.sh re-entrant

third_party/polymer/v1_0/extract_inline_scripts.sh

Index: third_party/polymer/v1_0/extract_inline_scripts.sh
diff --git a/third_party/polymer/v1_0/extract_inline_scripts.sh b/third_party/polymer/v1_0/extract_inline_scripts.sh
index e4c891f75638f63b469aee16065981f468508c06..3d106102a08ef052f44be3fcbc6fb3cf83031fc1 100755
--- a/third_party/polymer/v1_0/extract_inline_scripts.sh
+++ b/third_party/polymer/v1_0/extract_inline_scripts.sh
@@ -10,7 +10,7 @@ if [ "$#" -ne 2 ]
 then
   echo "Usage: $0 <src_dir> <dst_dir>"
   echo
-  echo "Copies <src_dir> to <dst_dir> and extracts all inline scripts from" \
+  echo "Extracts inlined scripts from <src_dir> to <dst_dir>" \
        "Polymer HTML files found in the destination directory to separate JS" \
        "files. A JS file extracted from the file with name 'foo.html' will" \
        "have a name 'foo-extracted.js'. Inclusion of the script file will be" \
@@ -18,17 +18,11 @@ then
   exit 1
 fi
 
-src="$1"
-dst="$2"
+src="${1%/}"
+dst="${2%/}"
 
-if [ -e "$dst" ]
-then
-  echo "ERROR: '$dst' already exists. Please remove it before running the" \
-      "script." 1>&2
-  exit 1
-fi
+rsync -c -r -v --exclude="compiled_resources*.gyp" "$src/" "$dst/"
 
-cp -r "$src" "$dst"
 find "$dst" -name "*.html" \
             -not -path "*/demos/*" \
             -not -path "*/test/*" \
@@ -44,6 +38,7 @@ do
 
   html_without_js="$dir/$name-extracted.html"
   extracted_js="$dir/$name-extracted.js"
+  echo "Crisping $original_html_name"
   crisper --script-in-head=false --source "$original_html_name" \
       --html "$html_without_js" --js "$extracted_js"
   mv "$html_without_js" "$original_html_name"