66 lines
1.6 KiB
Go
66 lines
1.6 KiB
Go
package metadata
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import (
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"regexp"
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"strings"
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"github.com/PuerkitoBio/goquery"
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"github.com/taylorskalyo/goreader/epub"
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)
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func getEPUBMetadata(filepath string) (*MetadataInfo, error) {
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rc, err := epub.OpenReader(filepath)
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if err != nil {
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return nil, err
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}
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rf := rc.Rootfiles[0]
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parsedMetadata := &MetadataInfo{
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Type: TYPE_EPUB,
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Title: &rf.Title,
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Author: &rf.Creator,
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Description: &rf.Description,
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}
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// Parse Possible ISBN
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if rf.Source != "" {
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replaceRE := regexp.MustCompile(`[-\s]`)
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possibleISBN := replaceRE.ReplaceAllString(rf.Source, "")
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// ISBN Matches
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isbn13RE := regexp.MustCompile(`(?P<ISBN>\d{13})`)
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isbn10RE := regexp.MustCompile(`(?P<ISBN>\d{10})`)
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isbn13Matches := isbn13RE.FindStringSubmatch(possibleISBN)
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isbn10Matches := isbn10RE.FindStringSubmatch(possibleISBN)
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if len(isbn13Matches) > 0 {
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isbnIndex := isbn13RE.SubexpIndex("ISBN")
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parsedMetadata.ISBN13 = &isbn13Matches[isbnIndex]
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} else if len(isbn10Matches) > 0 {
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isbnIndex := isbn10RE.SubexpIndex("ISBN")
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parsedMetadata.ISBN10 = &isbn10Matches[isbnIndex]
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}
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}
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return parsedMetadata, nil
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}
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func countEPUBWords(filepath string) (int64, error) {
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rc, err := epub.OpenReader(filepath)
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if err != nil {
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return 0, err
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}
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rf := rc.Rootfiles[0]
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var completeCount int64
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for _, item := range rf.Itemrefs {
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f, _ := item.Open()
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doc, _ := goquery.NewDocumentFromReader(f)
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doc.Find("script, style, noscript, iframe").Remove()
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words := len(strings.Fields(doc.Text()))
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completeCount = completeCount + int64(words)
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}
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return completeCount, nil
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}
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