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#!/bin/sh -eu
# XXX: technically doesn't work with paths that have newlines in them, but
# find -exec doesn't propagate the exit status
find . -name '*.ha' | while read -r f; do
awk 'BEGIN { state = "start" }
/./ { empty = 0 }
/^$/ { empty = 1 }
/[ \t]$/ {
print "trailing whitespace in " FILENAME
exit 1
}
state == "start" {
if ($0 !~ /^\/\/ SPDX-License-Identifier: /) {
print "missing copyright header in " FILENAME
exit 1
}
state = "author"
next
}
state == "author" {
if ($0 != "// (c) Hare authors <https://harelang.org>") {
print "invalid authorship information in " FILENAME
exit 1
}
state = "comment"
next
}
state == "comment" && $0 !~ /^\/\// {
if ($0 != "") {
print "missing empty line after copyright header in " FILENAME
exit 1
}
state = "postheader"
next
}
state == "postheader" {
if ($0 == "") {
print "extra empty line after copyright header in " FILENAME
exit 1
}
state = "body"
}
END {
if (state != "body") {
print "incomplete copyright header in " FILENAME
exit 1
}
if (empty) {
print "trailing empty line in " FILENAME
exit 1
}
}' "$f"
done
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