1package main
  2
  3import (
  4	"archive/zip"
  5	"fmt"
  6	"io"
  7	"os"
  8	"path"
  9	"path/filepath"
 10	"strings"
 11	"time"
 12)
 13
 14func timeago(t *time.Time) string {
 15	d := time.Since(*t)
 16	if d.Seconds() < 60 {
 17		seconds := int(d.Seconds())
 18		if seconds == 1 {
 19			return "1 second ago"
 20		}
 21		return fmt.Sprintf("%d seconds ago", seconds)
 22	} else if d.Minutes() < 60 {
 23		minutes := int(d.Minutes())
 24		if minutes == 1 {
 25			return "1 minute ago"
 26		}
 27		return fmt.Sprintf("%d minutes ago", minutes)
 28	} else if d.Hours() < 24 {
 29		hours := int(d.Hours())
 30		if hours == 1 {
 31			return "1 hour ago"
 32		}
 33		return fmt.Sprintf("%d hours ago", hours)
 34	} else {
 35		days := int(d.Hours()) / 24
 36		if days == 1 {
 37			return "1 day ago"
 38		}
 39		return fmt.Sprintf("%d days ago", days)
 40	}
 41}
 42
 43/// Perform some checks to make sure the file is OK
 44func checkIfValidFile(filename string, fileBytes []byte) error {
 45	if len(filename) == 0 {
 46		return fmt.Errorf("Please enter a filename")
 47	}
 48	if len(filename) > 256 { // arbitrarily chosen
 49		return fmt.Errorf("Filename is too long")
 50	}
 51	ext := strings.ToLower(path.Ext(filename))
 52	found := false
 53	for _, mimetype := range c.OkExtensions {
 54		if ext == mimetype {
 55			found = true
 56		}
 57	}
 58	if !found {
 59		return fmt.Errorf("Invalid file extension: %s", ext)
 60	}
 61	fmt.Println(len(fileBytes))
 62	if len(fileBytes) > c.MaxFileSize {
 63		return fmt.Errorf("File too large. File was %d bytes, Max file size is %d", len(fileBytes), c.MaxFileSize)
 64	}
 65	return nil
 66}
 67
 68func zipit(source string, target io.Writer) error {
 69	archive := zip.NewWriter(target)
 70
 71	info, err := os.Stat(source)
 72	if err != nil {
 73		return nil
 74	}
 75
 76	var baseDir string
 77	if info.IsDir() {
 78		baseDir = filepath.Base(source)
 79	}
 80
 81	filepath.Walk(source, func(path string, info os.FileInfo, err error) error {
 82		if err != nil {
 83			return err
 84		}
 85
 86		header, err := zip.FileInfoHeader(info)
 87		if err != nil {
 88			return err
 89		}
 90
 91		if baseDir != "" {
 92			header.Name = filepath.Join(baseDir, strings.TrimPrefix(path, source))
 93		}
 94
 95		if info.IsDir() {
 96			header.Name += "/"
 97		} else {
 98			header.Method = zip.Deflate
 99		}
100
101		writer, err := archive.CreateHeader(header)
102		if err != nil {
103			return err
104		}
105
106		if info.IsDir() {
107			return nil
108		}
109
110		file, err := os.Open(path)
111		if err != nil {
112			return err
113		}
114		defer file.Close()
115		_, err = io.Copy(writer, file)
116		return err
117	})
118
119	archive.Close()
120
121	return err
122}