118 lines
2.4 KiB
Go
118 lines
2.4 KiB
Go
package main
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import (
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"git.gitorious.org/go-pkg/epub.git"
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"html/template"
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"labix.org/v2/mgo"
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"labix.org/v2/mgo/bson"
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"net/http"
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"regexp"
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"strings"
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)
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type readData struct {
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S Status
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Book Book
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Txt template.HTML
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Next string
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Prev string
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Back string
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}
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func parseUrl(url string) (string, string, string, string) {
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exp, _ := regexp.Compile("^(\\/read[^\\/]*\\/)([^\\/]*)\\/?(.*\\.([^\\.]*))?$")
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res := exp.FindStringSubmatch(url)
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base := res[1]
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id := res[2]
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file := ""
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ext := ""
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if len(res) == 5 {
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file = res[3]
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ext = res[4]
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}
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return base, id, file, ext
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}
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func cleanHtml(html string) string {
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str := strings.Split(html, "<body")
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if len(str) < 2 {
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return html
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}
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str = strings.SplitN(str[1], ">", 2)
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if len(str) < 2 {
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return str[0]
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}
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return "<div " + str[0] + ">" + strings.Split(str[1], "</body>")[0] + "</div>"
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}
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/* return next and prev urls from document */
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func nextPrev(e *epub.Epub, file string, id string, base string) (string, string) {
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it := e.Iterator(epub.EITERATOR_LINEAR)
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defer it.Close()
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prev := ""
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next := ""
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for it.CurrUrl() != file {
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prev = it.CurrUrl()
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_, err := it.Next()
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if err != nil {
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break
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}
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}
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if it.CurrUrl() == file {
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it.Next()
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next = it.CurrUrl()
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}
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if prev != "" {
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prev = base + id + "/" + prev
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}
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if next != "" {
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next = base + id + "/" + next
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}
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return next, prev
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}
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func readHandler(coll *mgo.Collection) func(http.ResponseWriter, *http.Request) {
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return func(w http.ResponseWriter, r *http.Request) {
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base, id, file, ext := parseUrl(r.URL.Path)
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if base == "/readnew/" {
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sess := GetSession(r)
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if sess.User == "" {
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http.NotFound(w, r)
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return
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}
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}
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books, _, err := GetBook(coll, bson.M{"_id": bson.ObjectIdHex(id)})
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if err != nil || len(books) == 0 {
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http.NotFound(w, r)
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return
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}
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book := books[0]
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e, _ := epub.Open(book.Path, 0)
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defer e.Close()
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if file == "" {
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it := e.Iterator(epub.EITERATOR_LINEAR)
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defer it.Close()
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http.Redirect(w, r, base+id+"/"+it.CurrUrl(), 307)
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return
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}
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if ext == "html" || ext == "htm" || ext == "xhtml" || ext == "xml" {
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var data readData
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data.S = GetStatus(w, r)
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data.Book = book
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data.Next, data.Prev = nextPrev(e, file, id, base)
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if base == "/readnew/" {
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data.Back = "/new/"
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} else {
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data.Back = "/book/" + id
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}
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page := string(e.Data(file))
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data.Txt = template.HTML(cleanHtml(page))
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loadTemplate(w, "read", data)
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} else {
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w.Write(e.Data(file))
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}
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}
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}
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