Showing JaCoCo coverage percentages inline in GitHub READMEs (Multi module Maven Projects)

jacoco-coverage-percentage-svg.sh

#!/bin/bash

# You will have needed to have installed 'xmlstarlet' first
#
# Each time you use this, you will have had to run tests "mvn clean install" first.
#
# In your README, have a line like so, to display the coverage. 
#
#     Code Coverage: ![](coverage-percentage.svg?raw=true&sanitize=true)%
#
# You'll have to check this in of course. Perhaps daily is enough. I'd prefer NN.n percentages 
# but I can't see how to configure that for JaCoCo.

template=`cat <<EOF
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg xmlns="http://www.w3.org/2000/svg" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xl="http://www.w3.org/1999/xlink" version="1.1" viewBox="314.084 115 32.832 30" width="32.832" height="30">
  <defs>
    <font-face font-family="Helvetica Neue" font-size="16" panose-1="2 0 5 3 0 0 0 2 0 4" units-per-em="1000" underline-position="-100" underline-thickness="50" slope="0" x-height="517" cap-height="714" ascent="951.9958" descent="-212.99744" font-weight="400">
      <font-face-src>
        <font-face-name name="HelveticaNeue"/>
      </font-face-src>
    </font-face>
  </defs>
  <g id="Canvas_1" fill-opacity="1" stroke="none" stroke-dasharray="none" fill="none" stroke-opacity="1">
    <title>Canvas 1</title>
    <g id="Canvas_1: Layer 1">
      <title>Layer 1</title>
      <g id="Graphic_2">
        <text transform="translate(319.084 120)" fill="black">
          <tspan font-family="Helvetica Neue" font-size="16" font-weight="400" fill="black" x="0" y="15">NN</tspan>
        </text>
      </g>
    </g>
  </g>
</svg>
EOF
`

doit ()
{
  if [ -e target/site/jacoco/index.html ]
  then
    pct=$(cat target/site/jacoco/index.html | xmlstarlet format --indent-tab | xmlstarlet sel   -N x="http://www.w3.org/1999/xhtml"   -t   -m "//x:tfoot"   -v . 2>&1 | grep % | head -1 | xargs | tr -d '%')
    echo "$template" | sed "s/NN/${pct}/g" > coverage-percentage.svg
  fi
}


dirs=$(find . -d | grep target | grep "target$" | sed "s#/target##")

while read -r line; do
	cd $line
    doit
	cd - > /dev/null
done <<< "$dirs"