AdventOfCode-2020/passports.cr

40 lines
1.0 KiB
Crystal

def parse_passport(string)
new_hash = {} of String => String
string.split(" ").each do |field|
k,v = field.split(":")
new_hash[k] = v
end
new_hash
end
def parse_passports(lines)
lines.split(/\n\n/).map do |s|
parse_passport(s.chomp.gsub(/\n/, " "))
end
end
def validate_range(range)
->(s : String) { s.to_i32?.try { |i| range.includes? i } }
end
def validate_regex(regex)
->(s : String) { s.matches?(regex) }
end
def validate_unit_range(unit_ranges)
->(s : String) {
return false unless s.match(/^(\d+)([a-zA-Z]+)$/)
unit_ranges[$~[2]]?.try { |rng| validate_range(rng).call($~[1]) }
}
end
DEFAULT_VALIDATORS = {
"byr" => validate_range(1920..2002),
"iyr" => validate_range(2010..2020),
"eyr" => validate_range(2020..2030),
"hgt" => validate_unit_range({"cm" => (150..193), "in" => (59..76)}),
"hcl" => validate_regex(/^#[0-9a-f]{6}$/),
"ecl" => ->(s : String) { "amb blu brn gry grn hzl oth".split(" ").includes? s },
"pid" => ->(s : String) { s =~ /^[0-9]{9}$/ },
}