Export test coverage from slather to shield.io badge html object

gistfile1.txt

slather coverage \
    --cobertura-xml \
    --scheme "SchemeName" \
    --workspace path/to/workspace \
    XcodeProjectName.xcodeproj

xmlstarlet sel \
    --template \
        --match "//coverage[1]" \
        --elem "object" \
            --attr "width" --output "120px" --break \
            --attr "height" --output "20px" --break \
            --attr "data" --output "https://img.shields.io/badge/test--coverage-" --value-of "round(@line-rate * 100)" --output "%-green.svg?style=flat-square" \
    cobertura.xml > test-coverage.html