73 lines
1.4 KiB
Go
73 lines
1.4 KiB
Go
package main
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import (
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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)
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func atois(s ...string) ([]int, error) {
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ints := make([]int, len(s))
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for i, s := range s {
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value, err := strconv.Atoi(s)
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if err != nil {
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return nil, fmt.Errorf("couldn't convert '%s' to a number; error: %v", s, err)
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}
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ints[i] = value
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}
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return ints, nil
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}
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func scanDir(dir string) ([]string, error) {
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var files []string
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err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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if path == dir || info.IsDir() {
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return nil
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}
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files = append(files, path)
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return nil
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})
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if err != nil {
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return nil, err
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}
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return files, nil
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}
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type point struct {
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x, y int
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}
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func parsePoint(s string) (point, error) {
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components := strings.Split(s, ",")
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if len(components) != 2 {
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return point{}, errors.New("expected two components separated by a comma")
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}
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ints, err := atois(components...)
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if err != nil {
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return point{}, err
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}
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return point{x: ints[0], y: ints[1]}, nil
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}
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type rect struct {
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min, max point
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}
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func parseRect(s string) (rect, error) {
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components := strings.Split(s, ",")
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if len(components) != 4 {
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return rect{}, errors.New("expected four components separated by a comma")
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}
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ints, err := atois(components...)
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if err != nil {
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return rect{}, err
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}
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return rect{min: point{x: ints[0], y: ints[1]}, max: point{x: ints[2], y: ints[3]}}, nil
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}
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