Day 4.
parent
421b1a4b5e
commit
1360b2cc63
GPG Key ID:
1573F6D8EFE4D0CF
File diff suppressed because it is too large
Load Diff
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@ -0,0 +1,98 @@
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package main
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import (
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"bufio"
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"io"
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"log"
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"os"
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"strings"
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)
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func main() {
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fields := []string{
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"byr",
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"iyr",
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"eyr",
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"hgt",
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"hcl",
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"ecl",
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"pid",
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"cid",
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}
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optionalFields := []string{
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"cid",
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}
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f, err := os.Open("input")
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if err != nil {
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panic(err)
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}
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validPasses := 0
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currentPassValues := map[string]string{}
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currentPassIsInvalid := false
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r := bufio.NewReader(f)
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// log.Println("=== New pass ===")
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for {
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line, err := r.ReadString('\n')
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if err != io.EOF && err != nil {
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panic(nil)
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}
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if err == io.EOF {
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line = ""
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}
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line = strings.TrimSpace(line)
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if len(currentPassValues) <= 0 && err == io.EOF {
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break
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}
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if len(currentPassValues) <= 0 && len(line) == 0 {
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continue
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}
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if len(currentPassValues) > 0 && (err == io.EOF || len(line) == 0) {
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// Check if all required fields can be found
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b:
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for _, fieldName := range fields {
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if _, ok := currentPassValues[fieldName]; !ok {
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// field is missing
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for _, optionalFieldName := range optionalFields {
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if optionalFieldName == fieldName {
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// skip this field for check
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log.Printf("-- %s is missing (optional)", fieldName)
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break b
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}
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}
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log.Printf("-- %s is missing", fieldName)
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currentPassIsInvalid = true
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break b
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}
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}
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if currentPassIsInvalid {
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log.Println("** INVALID", currentPassValues)
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} else {
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log.Println("** VALID", currentPassValues)
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validPasses++
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}
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// log.Println("=== New pass ===")
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currentPassValues = map[string]string{}
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currentPassIsInvalid = false
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}
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if !currentPassIsInvalid {
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passFields := strings.Fields(line)
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for _, field := range passFields {
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fieldSplit := strings.SplitN(field, ":", 2)
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fieldName := fieldSplit[0]
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fieldValue := fieldSplit[1]
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// log.Printf("<- %s %s\n", fieldName, fieldValue)
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if _, ok := currentPassValues[fieldName]; ok {
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currentPassIsInvalid = true
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log.Println("-- dupe:", fieldName)
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}
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currentPassValues[fieldName] = fieldValue
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}
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}
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}
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log.Printf("%d passes valid\n", validPasses)
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}
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@ -0,0 +1,172 @@
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package main
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import (
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"bufio"
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"fmt"
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"io"
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"log"
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"os"
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"regexp"
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"strconv"
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"strings"
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)
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func and(f ...func(string) bool) func(string) bool {
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return func(s string) bool {
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for _, fs := range f {
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if !fs(s) {
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return false
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}
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}
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return true
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}
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}
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func or(f ...func(string) bool) func(string) bool {
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return func(s string) bool {
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for _, fs := range f {
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if fs(s) {
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return true
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}
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}
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return false
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}
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}
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func rx(regex string) func(string) bool {
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rx := regexp.MustCompile(regex)
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return rx.MatchString
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}
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func numrange(min int, max int) func(string) bool {
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rx := regexp.MustCompile(`\d+`)
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return func(val string) bool {
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n := rx.FindString(val)
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num, err := strconv.Atoi(n)
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if err != nil {
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panic(err)
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}
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if num < min || num > max {
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return false
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}
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return true
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}
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}
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func unit(unit string, min int, max int) func(string) bool {
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rxc := rx(fmt.Sprintf(`^\d+%s$`, unit))
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return and(rxc, numrange(min, max))
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}
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func digitsOnly(digits int) func(string) bool {
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return rx(fmt.Sprintf(`^\d{%d}$`, digits))
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}
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func digits(digits int, min int, max int) func(string) bool {
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rxc := digitsOnly(digits)
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return and(rxc, numrange(min, max))
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}
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func main() {
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fields := []string{
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"byr",
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"iyr",
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"eyr",
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"hgt",
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"hcl",
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"ecl",
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"pid",
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"cid",
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}
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validation := map[string]func(val string) bool{
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"byr": digits(4, 1920, 2002),
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"iyr": digits(4, 2010, 2020),
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"eyr": digits(4, 2020, 2030),
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"hgt": or(unit("cm", 150, 193), unit("in", 59, 76)),
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"hcl": rx(`^#[0-9a-f]{6}$`),
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"ecl": rx(`^(amb|blu|brn|gry|grn|hzl|oth)$`),
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"pid": digitsOnly(9),
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}
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optionalFields := []string{
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"cid",
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}
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f, err := os.Open("input")
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if err != nil {
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panic(err)
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}
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validPasses := 0
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currentPassValues := map[string]string{}
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currentPassIsInvalid := false
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r := bufio.NewReader(f)
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// log.Println("=== New pass ===")
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for {
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line, err := r.ReadString('\n')
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if err != io.EOF && err != nil {
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panic(nil)
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}
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if err == io.EOF {
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line = ""
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}
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line = strings.TrimSpace(line)
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if len(currentPassValues) <= 0 && err == io.EOF {
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break
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}
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if len(currentPassValues) <= 0 && len(line) == 0 {
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continue
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}
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if len(currentPassValues) > 0 && (err == io.EOF || len(line) == 0) {
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// Check if all required fields can be found
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b:
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for _, fieldName := range fields {
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if fieldValue, ok := currentPassValues[fieldName]; !ok {
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// field is missing
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for _, optionalFieldName := range optionalFields {
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if optionalFieldName == fieldName {
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// skip this field for check
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log.Printf("-- %s is missing (optional)", fieldName)
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break b
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}
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}
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log.Printf("-- %s is missing", fieldName)
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currentPassIsInvalid = true
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break b
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} else if validator, ok := validation[fieldName]; ok {
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if !validator(fieldValue) {
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log.Printf("-- %s (%s) failed validation", fieldName, fieldValue)
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currentPassIsInvalid = true
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break b
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}
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}
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}
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if currentPassIsInvalid {
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log.Println("** INVALID", currentPassValues)
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} else {
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log.Println("** VALID", currentPassValues)
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validPasses++
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}
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// log.Println("=== New pass ===")
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currentPassValues = map[string]string{}
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currentPassIsInvalid = false
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}
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if !currentPassIsInvalid {
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passFields := strings.Fields(line)
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for _, field := range passFields {
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fieldSplit := strings.SplitN(field, ":", 2)
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fieldName := fieldSplit[0]
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fieldValue := fieldSplit[1]
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// log.Printf("<- %s %s\n", fieldName, fieldValue)
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if _, ok := currentPassValues[fieldName]; ok {
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currentPassIsInvalid = true
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log.Println("-- dupe:", fieldName)
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}
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currentPassValues[fieldName] = fieldValue
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}
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}
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}
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log.Printf("%d passes valid\n", validPasses)
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}
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