mirror of
https://git.sr.ht/~seirdy/seirdy.one
synced 2024-12-26 02:22:09 +00:00
79 lines
1.6 KiB
Bash
Executable file
79 lines
1.6 KiB
Bash
Executable file
#!/usr/bin/env dash
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set -u
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# the name of this program
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progname="$(basename "${0}")"
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help_text="Usage: ${progname} [options...] URL
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Validate the given feed URL, excluding false-positives
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Options:
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-h Print this help and exit
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"
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usage() {
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printf '%s' "${help_text}"
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}
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# when the user passess bad args, send a msg to stderr and exit
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# usage: bad_option <option> <reason>
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bad_option() {
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echo "${progname}: option ${1}: ${2}" >&2
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usage >&2
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exit 1
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}
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while getopts "ho" flags; do
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case ${flags} in
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h)
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usage
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exit 0
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;;
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*)
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bad_option "${flags}" 'invalid option'
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exit 1
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;;
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esac
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done
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url="$1"
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find_rel_mention_count() {
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curl -s "$url" | grep -cF 'rel="mentioned"'
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}
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rel_mention_count="$(find_rel_mention_count)"
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run_validator() {
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"$GHQ_ROOT/github.com/w3c/feedvalidator/src/demo.py" "$url"
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}
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validate_feed() {
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# silence "self reference doesn't match" because i'm testing a localhost copy.
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# entries with the same timestamp isn't a big deal
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# unregistered link relationship is a false positive caused by an unknown namespace (rel-mentioned).
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rel_mention_string="Unregistered link relationship \($rel_mention_count occurrence"
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if [ "$rel_mention_count" = '1' ]; then
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rel_mention_string="Unregistered link relationship"
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fi
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full_regex="Use of unknown namespace|Self reference doesn't match|$rel_mention_string|entries with the same value for atom:updated|Validating $url"
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run_validator \
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| grep -Ev "$full_regex"
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}
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validator_output="$(validate_feed)"
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if [ "$validator_output" = '' ]; then
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echo "Feed is valid"
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exit 0
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else
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echo "Feed errors found!" 1>&2
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echo "$validator_output"
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exit 1
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fi
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# vi:ft=sh
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