Moderate incoming epubs
This commit is contained in:
Las Zenow
parent
67907a3629
commit
ff6d44d821
6 changed files with 321 additions and 22 deletions
230
upload.go
230
upload.go
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@ -1,11 +1,21 @@
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package main
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import (
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"git.gitorious.org/go-pkg/epub.git"
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"labix.org/v2/mgo"
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"os"
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"strconv"
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//"labix.org/v2/mgo/bson"
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"net/http"
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"os"
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"os/exec"
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"regexp"
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"strconv"
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"strings"
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)
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const (
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COVER_PATH = "cover/"
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RESIZE = "/usr/bin/convert -resize 300 -quality 60 "
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RESIZE_THUMB = "/usr/bin/convert -resize 60 -quality 60 "
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)
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func storePath(name string) string {
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@ -18,16 +28,17 @@ func storePath(name string) string {
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return path
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}
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func storeFile(r *http.Request) error {
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func storeFile(r *http.Request) (string, error) {
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f, header, err := r.FormFile("epub")
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if err != nil {
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return err
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return "", err
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}
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defer f.Close()
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fw, err := os.Create(storePath(header.Filename))
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path := storePath(header.Filename)
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fw, err := os.Create(path)
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if err != nil {
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return err
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return "", err
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}
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defer fw.Close()
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@ -39,29 +50,218 @@ func storeFile(r *http.Request) error {
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fw.Write(buff)
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}
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return nil
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return path, nil
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}
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func cleanStr(str string) string {
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str = strings.Replace(str, "'", "'", -1)
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exp, _ := regexp.Compile("[ ,]*$")
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str = exp.ReplaceAllString(str, "")
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return str
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}
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func storeImg(img []byte, title, extension string) (string, string) {
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name := title
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folder := COVER_PATH + name[:1] + "/"
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os.Mkdir(folder, os.ModePerm)
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imgPath := folder + name + extension
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_, err := os.Stat(imgPath)
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for i := 0; err == nil; i++ {
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name = title + "_" + strconv.Itoa(i)
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imgPath = folder + name + extension
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_, err = os.Stat(imgPath)
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}
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/* store img on disk */
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file, _ := os.Create(imgPath)
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defer file.Close()
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file.Write(img)
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/* resize img */
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resize := append(strings.Split(RESIZE, " "), imgPath, imgPath)
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cmd := exec.Command(resize[0], resize[1:]...)
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cmd.Run()
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imgPathSmall := folder + name + "_small" + extension
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resize = append(strings.Split(RESIZE_THUMB, " "), imgPath, imgPathSmall)
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cmd = exec.Command(resize[0], resize[1:]...)
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cmd.Run()
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return "/" + imgPath, "/" + imgPathSmall
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}
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func getCover(e *epub.Epub, title string) (string, string) {
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/* Try first common names */
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img := e.Data("cover.jpg")
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if len(img) != 0 {
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return storeImg(img, title, ".jpg")
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}
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img = e.Data("cover.jpeg")
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if len(img) != 0 {
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return storeImg(img, title, ".jpg")
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}
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img = e.Data("cover1.jpg")
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if len(img) != 0 {
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return storeImg(img, title, ".jpg")
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}
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img = e.Data("cover1.jpeg")
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if len(img) != 0 {
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return storeImg(img, title, ".jpg")
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}
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/* search for img on the text */
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exp, _ := regexp.Compile("<img.*src=[\"']([^\"']*(\\.[^\\.\"']*))[\"']")
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it := e.Iterator(epub.EITERATOR_SPINE)
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defer it.Close()
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var err error = nil
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txt := it.Curr()
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for err == nil {
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res := exp.FindStringSubmatch(txt)
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if res != nil {
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urlPart := strings.Split(it.CurrUrl(), "/")
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url := strings.Join(urlPart[:len(urlPart)-1], "/")
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if res[1][:3] == "../" {
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res[1] = res[1][3:]
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url = strings.Join(urlPart[:len(urlPart)-2], "/")
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}
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res[1] = strings.Replace(res[1], "%20", " ", -1)
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res[1] = strings.Replace(res[1], "%27", "'", -1)
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res[1] = strings.Replace(res[1], "%28", "(", -1)
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res[1] = strings.Replace(res[1], "%29", ")", -1)
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if url == "" {
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url = res[1]
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} else {
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url = url + "/" + res[1]
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}
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img := e.Data(url)
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if len(img) != 0 {
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return storeImg(img, title, res[2])
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}
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}
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txt, err = it.Next()
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}
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return "", ""
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}
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func parseAuthr(creator []string) []string {
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exp1, _ := regexp.Compile("^(.*\\( *([^\\)]*) *\\))*$")
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exp2, _ := regexp.Compile("^[^:]*: *(.*)$")
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var res []string //TODO: can be predicted the lenght
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for _, s := range creator {
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auth := exp1.FindStringSubmatch(s)
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if auth != nil {
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res = append(res, cleanStr(strings.Join(auth[2:], ", ")))
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} else {
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auth := exp2.FindStringSubmatch(s)
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if auth != nil {
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res = append(res, cleanStr(auth[1]))
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} else {
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res = append(res, cleanStr(s))
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}
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}
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}
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return res
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}
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func parseDescription(description []string) string {
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str := cleanStr(strings.Join(description, ", "))
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exp, _ := regexp.Compile("<[^>]*>")
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str = exp.ReplaceAllString(str, "")
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str = strings.Replace(str, "&", "&", -1)
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str = strings.Replace(str, "<", "<", -1)
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str = strings.Replace(str, ">", ">", -1)
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str = strings.Replace(str, "\\n", "\n", -1)
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return str
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}
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func parseSubject(subject []string) []string {
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var res []string
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for _, s := range subject {
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res = append(res, strings.Split(s, " / ")...)
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}
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return res
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}
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func parseDate(date []string) string {
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if len(date) == 0 {
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return ""
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}
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return strings.Replace(date[0], "Unspecified: ", "", -1)
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}
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func keywords(b map[string] interface{}) (k []string) {
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title, _ := b["title"].(string)
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k = strings.Split(title, " ")
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author, _ := b["author"].([]string)
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for _, a := range author {
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k = append(k, strings.Split(a, " ")...)
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}
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publisher, _ := b["publisher"].(string)
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k = append(k, strings.Split(publisher, " ")...)
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subject, _ := b["subject"].([]string)
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k = append(k, subject...)
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return
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}
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func parseFile(coll *mgo.Collection, path string) (string, error) {
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book := map[string] interface{}{}
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e, err := epub.Open(path, 0)
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if err != nil {
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return "", err
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}
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defer e.Close()
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title := cleanStr(strings.Join(e.Metadata(epub.EPUB_TITLE), ", "))
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book["title"] = title
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book["author"] = parseAuthr(e.Metadata(epub.EPUB_CREATOR))
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book["contributor"] = cleanStr(strings.Join(e.Metadata(epub.EPUB_CONTRIB), ", "))
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book["publisher"] = cleanStr(strings.Join(e.Metadata(epub.EPUB_PUBLISHER), ", "))
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book["description"] = parseDescription(e.Metadata(epub.EPUB_DESCRIPTION))
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book["subject"] = parseSubject(e.Metadata(epub.EPUB_SUBJECT))
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book["date"] = parseDate(e.Metadata(epub.EPUB_DATE))
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book["lang"] = e.Metadata(epub.EPUB_LANG)
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book["type"] = strings.Join(e.Metadata(epub.EPUB_TYPE), ", ")
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book["format"] = strings.Join(e.Metadata(epub.EPUB_FORMAT), ", ")
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book["source"] = strings.Join(e.Metadata(epub.EPUB_SOURCE), ", ")
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book["relation"] = strings.Join(e.Metadata(epub.EPUB_RELATION), ", ")
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book["coverage"] = strings.Join(e.Metadata(epub.EPUB_COVERAGE), ", ")
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book["rights"] = strings.Join(e.Metadata(epub.EPUB_RIGHTS), ", ")
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book["meta"] = strings.Join(e.Metadata(epub.EPUB_META), ", ")
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book["path"] = path
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cover, coverSmall := getCover(e, title)
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book["cover"] = cover
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book["coversmall"] = coverSmall
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book["keywords"] = keywords(book)
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coll.Insert(book)
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return title, nil
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}
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type uploadData struct {
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S Status
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Msg string
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S Status
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}
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func uploadHandler(coll *mgo.Collection) func(http.ResponseWriter, *http.Request) {
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return func(w http.ResponseWriter, r *http.Request) {
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var data uploadData
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data.S = GetStatus(w, r)
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data.S.Upload = true
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data.Msg = ""
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if r.Method == "POST" {
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err := storeFile(r)
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path, err := storeFile(r)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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data.Msg = "Upload successful."
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title, err := parseFile(coll, path)
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sess := GetSession(r)
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if err != nil {
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os.Remove(path)
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sess.Notify("Problem uploading!", "The file is not a well formed epub", "error")
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} else {
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sess.Notify("Upload successful!", "Added '"+title+"'. Thank you for your contribution", "success")
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}
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}
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var data uploadData
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data.S = GetStatus(w, r)
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data.S.Upload = true
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loadTemplate(w, "upload", data)
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}
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}
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