97 lines
1.6 KiB
Go
97 lines
1.6 KiB
Go
package aoc
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import (
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"bufio"
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"io"
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"io/fs"
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"os"
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"strconv"
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"strings"
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)
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func ReadLines(path string) (lines []string) {
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f, err := os.Open(path)
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if err != nil {
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panic(err)
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}
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defer f.Close()
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scanner := bufio.NewScanner(f)
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for scanner.Scan() {
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lines = append(lines, scanner.Text())
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}
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return lines
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}
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func ReadFile(path string) string {
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b, err := os.ReadFile(path)
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if err != nil {
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panic(err)
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}
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return strings.TrimSpace(string(b))
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}
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func MustInt(s string) int {
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i, err := strconv.Atoi(s)
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if err != nil {
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panic(err)
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}
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return i
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}
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type Inputs struct {
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fs fs.FS
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}
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func (i Inputs) ReadLines(path string) (lines []string) {
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f, err := i.fs.Open(path)
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if err != nil {
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panic(err)
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}
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defer f.Close()
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scanner := bufio.NewScanner(f)
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for scanner.Scan() {
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lines = append(lines, scanner.Text())
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}
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return lines
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}
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func (i Inputs) ReadFile(path string) string {
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f, err := i.fs.Open(path)
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if err != nil {
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panic(err)
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}
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defer f.Close()
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b, err := io.ReadAll(f)
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if err != nil {
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panic(err)
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}
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return strings.TrimSpace(string(b))
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}
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func Input() Inputs {
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if len(os.Args) > 1 {
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return Inputs{os.DirFS(os.Args[1])}
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}
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return Inputs{os.DirFS("./input")}
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}
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// Cut will be added to strings in Go 1.18, so hack it in for now!
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func Cut(s, sep string) (before, after string) {
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if i := strings.Index(s, sep); i >= 0 {
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return s[:i], s[i+len(sep):]
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}
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panic("Separator was not found in string")
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}
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func Ints(text string) (ns []int) {
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for _, n := range strings.Split(text, ",") {
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ns = append(ns, MustInt(n))
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}
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return
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}
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func ExLines(text string) []string {
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return strings.Split(strings.TrimSpace(text), "\n")
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}
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