Introduction * The js/ folder contains: - index.php - a servlet described below - piwik.js - the uncompressed piwik.js source for you to study or reference - README - this documentation file Why Use "js/index.php"? * js/index.php (or implicitly as "js/") can be used to serve up the minified piwik.js - it supports conditional-GET and Last-Modified, so piwik.js can be cached by the browser - it supports deflate/gzip compression if your web server (e.g., Apache without mod_deflate or mod_gzip), shrinking the data transfer to 8K * js/index.php (or implicitly as "js/") can also act as a proxy to piwik.php * If you are concerned about the impact of browser-based privacy filters which attempt to block tracking, you can change your tracking code to use "js/" instead of "piwik.js" and "piwik.php", respectively. Deployment * piwik.js is minified using YUICompressor 2.4.2. To install YUICompressor run: $ cd /path/to/piwik/js/ $ wget http://www.julienlecomte.net/yuicompressor/yuicompressor-2.4.2.zip $ unzip yuicompressor-2.4.2.zip To compress the code containing the evil "eval", either apply the patch from http://yuilibrary.com/projects/yuicompressor/ticket/2343811, or run: $ cd /path/to/piwik/js/ $ sed '//,/<\/DEBUG>/d' < piwik.js | sed 's/eval/replacedEvilString/' | java -jar yuicompressor-2.4.2/build/yuicompressor-2.4.2.jar --type js --line-break 1000 | sed 's/replacedEvilString/eval/' > piwik-min.js && cp piwik-min.js ../piwik.js This will generate the minify /path/to/piwik/js/piwik-min.js and copy it to /path/to/piwik/piwik.js * In a production environment, the tests/javascript folder is not used and can be removed (if present). Note: if the file "js/tests/enable_sqlite" exists, additional unit tests (requires the sqlite extension) are enabled.