set -o errexit -o pipefail

cd $(dirname $0)

die() {

echo >&2 "ERROR:" "$@"

exit 1

}

if python2.7 trivial-validate.py --quiet >&2

echo Validation of included rulesets completed. >&2

echo >&2

die "Validation of rulesets failed."

type xmllint >/dev/null || die "xmllint not available"

GRAMMAR="relaxng.xml"

validate_grammar() {

find ../src/chrome/content/rules -name "*.xml" | \

xargs xmllint --noout --relaxng $GRAMMAR

}

grammar_errors=$(validate_grammar 2>&1 | grep -v "validates" || true)

if [ -z "$grammar_errors" ]

echo Validation of rulesets against $GRAMMAR succeeded. >&2

echo >&2 "$grammar_errors"

# One very common error is to mess up rule attributes, so we check for

# this explicitly.

if [[ $grammar_errors == *"Element rule failed to validate attributes"* ]]

then

echo "Two very common reasons for this are the following:"

echo "- Missing caret (^) in 'from' attribute: it should be \"^http:\" and not \"http:\"."

echo "- Missing trailing slashes in 'from' or 'to' when specifying full hostnames: it should be \"https://eff.org/\" and not \"https://eff.org\"."

fi

die "Validation of rulesets against $GRAMMAR failed."