dekker.one
Een Gastenboek, ter voorkoming van brassen geheel geautomatiseerd
1package main
2
3import (
4 "bufio"
5 "fmt"
6 "os"
7 "path/filepath"
8 "strconv"
9 "strings"
10 "time"
11)
12
13const (
14 timeLayout = "3:04pm (MST)"
15)
16
17var (
18 entries []string
19)
20
21// Get the information from entries and format it.
22func listFilenames() {
23 for i, val := range entries {
24 val = strings.Trim(val, ".txt")
25 val = strings.Trim(val, "\n")
26 parts := strings.Split(val, " ")
27 unix, _ := strconv.ParseInt(parts[0], 10, 64)
28 t := time.Unix(unix, 0)
29 fmt.Printf("%d) %v - %v \n", i+1, t.Format(timeLayout), parts[1])
30 }
31}
32
33// Adds a file to entries if it's an actual file
34func getFilenames(path string, info os.FileInfo, err error) error {
35 if !info.IsDir() && info.Name() == path && filepath.Ext(path) == ".txt" {
36 entries = append(entries, path)
37 }
38 return nil
39}
40
41// A function that works like "less"
42func showFile(i int) {
43 f, openErr := os.Open(entries[i])
44 if openErr != nil {
45 fmt.Printf("\n\tCouldn't open file: %v", openErr)
46 return
47 }
48 defer f.Close()
49 reader := bufio.NewReader(f)
50 user := bufio.NewReader(os.Stdin)
51
52 clear()
53 fmt.Print("Druk op enter om volgende regels te zien en uiteindelijk terug te keren naar het keuzemenu.\n")
54 var width, height int = terminalSize()
55 fmt.Print(strings.Repeat("-", width-1) + "\n")
56
57 var lines int
58 var done = false
59 for !done {
60 line, err := reader.ReadString('\n')
61 done = err != nil
62 fmt.Print(line)
63 if lines >= height {
64 user.ReadString('\n')
65 }
66 lines++
67 }
68 fmt.Print(strings.Repeat("-", width-1) + "\n")
69 user.ReadString('\n')
70}
71
72// The coordinating function to show the different entries.
73func viewEntry() {
74 entries = make([]string, 0)
75 err := filepath.Walk(".", filepath.WalkFunc(getFilenames))
76 if err != nil {
77 return
78 }
79
80 for {
81 clear()
82 listFilenames()
83 fmt.Printf("\nKies hier welk bericht u graag zou willen lezen, toets 0 om terug te keren naar het menu: ")
84 var i int
85 fmt.Scan(&i)
86 if i > 0 && i <= len(entries) {
87 showFile(i - 1)
88 } else {
89 return
90 }
91 }
92}