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#!/bin/bash
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# Copyright 2018 The gRPC Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This script finds all html files in the current directory, and adds the
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# GA tracking snippet to them.
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read -r -d '' SNIPPET << EOF
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<script type="text/javascript">
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(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
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(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
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m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
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})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
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ga('create', 'UA-60127042-1', 'auto');
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ga('send', 'pageview');
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</script>
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EOF
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S=$(echo -n "$SNIPPET" | tr '\n' ' ')
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while IFS= read -r -d '' M
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do
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if grep -q "i,s,o,g,r,a,m" "$M"; then
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:
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else
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sed -i "s_</head>_${S}</head>_" "$M"
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fi
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done < <(find . -name \*.html -print0)
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