1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/doc/lib/make-watermark.sh b/js/src/doc/lib/make-watermark.sh
new file mode 100755
index 000000000..a39ff5436
--- /dev/null
+++ b/js/src/doc/lib/make-watermark.sh
@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+# Generate an HTML watermark for the given file. Claim the text was
+# generated from SOURCE.
+#
+# Usage:
+#
+#   make-watermark.sh FILE SOURCE
+
+set -eu
+
+# Include the watermark as visible text in the page, as suggested in bug 990662.
+
+echo '<h4>Source Metadata</h4>'
+echo '<dl>'
+echo '    <dt>Generated from file:<dt>'
+echo "    <dd>$2</dd>"
+echo '    <dt>Watermark:</dt>'
+echo "    <dd id='watermark'>sha256:$(cat "$1" | shasum -a 256 | sed 's/ .*$//')</dd>"
+
+# If we have Mercurial changeset ID, include it.
+if [ "${JS_DOC_HG_IDENTIFY:+set}" = set ]; then
+    # If the changeset ID has a '+' on the end (indicating local
+    # modifications), omit that from the link.
+    cat <<EOF
+    <dt>Changeset:</dt>
+    <dd><a href="https://hg.mozilla.org/mozilla-central/rev/${JS_DOC_HG_IDENTIFY%+}">${JS_DOC_HG_IDENTIFY}</a></dd>
+EOF
+fi
+
+echo '</dl>'