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Use the chapters for the next and prev links

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This commit is contained in:
Las Zenow 2012-08-28 11:19:53 +02:00
parent 6b0c8caed3
commit 5b4e0fb02e
1 changed files with 28 additions and 32 deletions
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60
reader.go
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@ -59,33 +59,6 @@ func genLink(id string, base string, link string) string {
return base + id + "/" + link
}
/* return next and prev urls from document */
func nextPrev(e *epub.Epub, file string, id string, base string) (string, string) {
it := e.Iterator(epub.EITERATOR_LINEAR)
defer it.Close()
prev := ""
next := ""
for it.CurrUrl() != file {
prev = it.CurrUrl()
_, err := it.Next()
if err != nil {
break
}
}
if it.CurrUrl() == file {
it.Next()
next = it.CurrUrl()
}
if prev != "" {
prev = base + id + "/" + prev
}
if next != "" {
next = base + id + "/" + next
}
return next, prev
}
func cleanLink(link string) string {
for i := 0; i < len(link); i++ {
if link[i] == '%' {
@ -96,19 +69,43 @@ func cleanLink(link string) string {
return link
}
func listChapters(e *epub.Epub, file string, id string, base string) []chapter {
/* return next and prev urls from document and the list of chapters */
func chapterList(e *epub.Epub, file string, id string, base string) (string, string, []chapter) {
chapters := make([]chapter, 0)
prev := ""
next := ""
tit := e.Titerator(epub.TITERATOR_NAVMAP)
defer tit.Close()
activeIndx := -1
for ; tit.Valid(); tit.Next() {
var c chapter
c.Label = tit.Label()
c.Link = genLink(id, base, tit.Link())
c.Depth = tit.Depth()
c.Active = cleanLink(tit.Link()) == file
if cleanLink(tit.Link()) == file {
c.Active = true
activeIndx = len(chapters)
}
chapters = append(chapters, c)
}
return chapters
/* if is the same chapter check the previous */
i := activeIndx-1
for i > 0 && strings.Contains(chapters[i].Link, "#") {
i--
}
if i > 0 {
prev = chapters[i].Link
}
i = activeIndx+1
for i < len(chapters) && strings.Contains(chapters[i].Link, "#") {
i++
}
if i < len(chapters) {
next = chapters[i].Link
}
return next, prev, chapters
}
func readHandler(coll *mgo.Collection) func(http.ResponseWriter, *http.Request) {
@ -140,8 +137,7 @@ func readHandler(coll *mgo.Collection) func(http.ResponseWriter, *http.Request)
var data readData
data.S = GetStatus(w, r)
data.Book = book
data.Chapters = listChapters(e, file, id, base)
data.Next, data.Prev = nextPrev(e, file, id, base)
data.Next, data.Prev, data.Chapters = chapterList(e, file, id, base)
if base == "/readnew/" {
data.Back = "/new/"
} else {