mirror of
https://codeberg.org/scip/epuppy.git
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238972f11f
* clean svg and cdata * refactored ebook preparation, separated from calling the pager * added better unit tests * add free ebooks for testing
120 lines
2.6 KiB
Go
120 lines
2.6 KiB
Go
/*
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Copyright © 2025 Thomas von Dein
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package cmd
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import (
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"fmt"
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"os"
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"path/filepath"
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"strings"
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"github.com/alecthomas/repr"
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"github.com/tlinden/epuppy/pkg/epub"
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)
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func Prepare(conf *Config) (*Ebook, error) {
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switch filepath.Ext(conf.Document) {
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case ".epub":
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return PrepareEpub(conf)
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default:
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return PrepareText(conf)
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}
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}
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func PrepareText(conf *Config) (*Ebook, error) {
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data, err := os.ReadFile(conf.Document)
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if err != nil {
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return nil, err
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}
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return &Ebook{
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Config: conf,
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Title: conf.Document,
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Body: string(data),
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}, nil
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}
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func PrepareEpub(conf *Config) (*Ebook, error) {
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book, err := epub.Open(conf.Document, conf.XML)
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if err != nil {
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return nil, err
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}
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if conf.Debug {
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repr.Println("book.Files()")
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repr.Println(book.Files())
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repr.Println(book.Ncx)
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repr.Println(book.Sections)
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repr.Println(book.Opf.Manifest)
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}
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buf := strings.Builder{}
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head := strings.Builder{}
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for _, creator := range book.Opf.Metadata.Creator {
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head.WriteString(creator.Data)
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head.WriteString(" ")
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}
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head.WriteString("- ")
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for _, title := range book.Opf.Metadata.Title {
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head.WriteString(title)
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head.WriteString(" ")
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}
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fetchByContent(conf, &buf, book)
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return &Ebook{
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Config: conf,
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Title: head.String(),
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Body: buf.String(),
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Cover: book.CoverImage,
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MediaType: book.CoverMediaType,
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}, nil
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}
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func fetchByContent(conf *Config, buf *strings.Builder, book *epub.Book) bool {
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chapter := 1
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var gotbody bool
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for _, content := range book.Content {
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if len(content.Body) > 0 {
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if content.Title != "" {
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buf.WriteString(conf.Colors.Chapter.
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Render(fmt.Sprintf("──────┤ %s ├──────", content.Title)))
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}
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buf.WriteString("\r\n\r\n")
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if conf.Dump {
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// avoid excess whitespaces when printing to stdout
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buf.WriteString(content.Body)
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} else {
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buf.WriteString(conf.Colors.Body.Render(content.Body))
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}
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buf.WriteString("\r\n\r\n\r\n\r\n")
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chapter++
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gotbody = true
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}
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}
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return gotbody
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}
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