/
itemimgs.go
113 lines (100 loc) · 2.29 KB
/
itemimgs.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
package taobaoimg
import (
"bufio"
"bytes"
"fmt"
"github.com/sunfmin/integrationtest"
"image"
_ "image/jpeg"
_ "image/png"
"io"
"io/ioutil"
"log"
"net/http"
"regexp"
)
var Verbose bool
type Image struct {
URL string
Format string
Width int
Height int
}
var descUrlRegexp = regexp.MustCompile(`http\:\/\/dsc\.taobaocdn\.com([\w\.\%\/]+)`)
var imgTagRegexp = regexp.MustCompile(`\<img[^<>]+(http[^\'\"]+jpg)`)
func FetchImagesAndDecodeDimension(num_iid string) (imgs []*Image, err error) {
return fetch(num_iid, true)
}
func FetchImages(num_iid string) (imgs []*Image, err error) {
return fetch(num_iid, false)
}
func DecodeImage(imgu string) (img *Image, err error) {
r3, err := http.Get(imgu)
defer close(r3)
if err != nil {
if Verbose {
log.Printf("taobaoimg: get taobao img url %s error: %s\n", imgu, err)
}
return
}
config, format, err := image.DecodeConfig(r3.Body)
if err != nil {
if Verbose {
log.Printf("taobaoimg: decode image %s error: %s\n", imgu, err)
}
return
}
img = &Image{}
img.URL = imgu
img.Format = format
img.Width = config.Width
img.Height = config.Height
return
}
func fetch(num_iid string, dimension bool) (imgs []*Image, err error) {
s := integrationtest.NewSession()
// r, err := http.Get(fmt.Sprintf("http://item.taobao.com/item.htm?id=%s", num_iid))
r1, err := s.Get(fmt.Sprintf("http://item.taobao.com/item.htm?id=%s", num_iid))
defer close(r1)
if err != nil {
if Verbose {
log.Printf("taobaoimg: get taobao item page error: %s\n", err)
}
return
}
buf := bytes.NewBuffer([]byte{})
matchIndex := descUrlRegexp.FindReaderIndex(bufio.NewReader(io.TeeReader(r1.Body, buf)))
if len(matchIndex) == 0 {
return
}
descURL := buf.String()[matchIndex[0]:matchIndex[1]]
r2, err := http.Get(descURL)
if err != nil {
if Verbose {
log.Printf("taobaoimg: get taobao desc url %s error: %s\n", descURL, err)
}
return
}
b, _ := ioutil.ReadAll(r2.Body)
defer close(r2)
matches := imgTagRegexp.FindAllStringSubmatch(string(b), -1)
for _, match := range matches {
var img *Image
if dimension {
img, err = DecodeImage(match[1])
} else {
img = &Image{
URL: match[1],
}
}
if img != nil {
imgs = append(imgs, img)
}
}
return
}
func close(r *http.Response) {
if r != nil && r.Body != nil {
r.Body.Close()
}
}