[list] add url, path and type in json output

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17
+        go-version: 1.18
     - name: Install kindlegen
       run: |
         curl -L https://github.com/lapwat/papeer/releases/download/kindlegen/kindlegen_linux_2.6_i386_v2_9.tar.gz > kindlegen.tar.gz

LICENSE.md

@@ -0,0 +1,675 @@
+### GNU GENERAL PUBLIC LICENSE
+
+Version 3, 29 June 2007
+
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+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
+CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
+ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
+NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
+LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
+TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
+PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+#### 17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
+
+### How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these
+terms.
+
+To do so, attach the following notices to the program. It is safest to
+attach them to the start of each source file to most effectively state
+the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+        <one line to give the program's name and a brief idea of what it does.>
+        Copyright (C) <year>  <name of author>
+
+        This program is free software: you can redistribute it and/or modify
+        it under the terms of the GNU General Public License as published by
+        the Free Software Foundation, either version 3 of the License, or
+        (at your option) any later version.
+
+        This program is distributed in the hope that it will be useful,
+        but WITHOUT ANY WARRANTY; without even the implied warranty of
+        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+        GNU General Public License for more details.
+
+        You should have received a copy of the GNU General Public License
+        along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper
+mail.
+
+If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+        <program>  Copyright (C) <year>  <name of author>
+        This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+        This is free software, and you are welcome to redistribute it
+        under certain conditions; type `show c' for details.
+
+The hypothetical commands \`show w' and \`show c' should show the
+appropriate parts of the General Public License. Of course, your
+program's commands might be different; for a GUI interface, you would
+use an "about box".
+
+You should also get your employer (if you work as a programmer) or
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. For more information on this, and how to apply and follow
+the GNU GPL, see <https://www.gnu.org/licenses/>.
+
+The GNU General Public License does not permit incorporating your
+program into proprietary programs. If your program is a subroutine
+library, you may consider it more useful to permit linking proprietary
+applications with the library. If this is what you want to do, use the
+GNU Lesser General Public License instead of this License. But first,
+please read <https://www.gnu.org/licenses/why-not-lgpl.html>.

Makefile

@@ -2,13 +2,12 @@ format:
 	gofmt -s -w .
 
 test:
-	go test github.com/lapwat/papeer/book
+	go test ./...
 
 install:
 	go install
 
 clean:
-	find . -maxdepth 1 -not -name 'README.md' -name '*.md' -delete
+	find . -maxdepth 1 -name '*.md' -not -name 'README.md' -delete
 	find . -maxdepth 1 -name '*.epub' -delete
 	find . -maxdepth 1 -name '*.mobi' -delete
-	find . -maxdepth 1 -name 'papeer-v*' -delete

README.md

@@ -1,6 +1,6 @@
 # Papeer
 
-Papeer is a powerful **ereader internet vacuum**. It can scrape any website, removing ads and keeping only the relevant content (formatted text and images). You can export the content to Markdown, EPUB or MOBI files.
+Papeer is a powerful **ereader internet vacuum**. It can scrape any website, removing ads and keeping only the relevant content (formatted text and images). You can export the content to Markdown, HTML, EPUB or MOBI files.
 
 # Table of contents
 
@@ -39,7 +39,7 @@ Flags:
   -a, --author string      book author
       --delay int          time in milliseconds to wait before downloading next chapter, use with depth/selector (default -1)
   -d, --depth int          scraping depth
-  -f, --format string      file format [stdout, md, epub, mobi] (default "md")
+  -f, --format string      file format [md, html, epub, mobi] (default "md")
   -h, --help               help for get
       --images             retrieve images only
   -i, --include            include URL as first chapter, use with depth/selector
@@ -50,6 +50,7 @@ Flags:
   -q, --quiet              hide progress bar
   -r, --reverse            reverse chapter order
   -s, --selector strings   table of contents CSS selector
+      --stdout             print to standard output
   -t, --threads int        download concurrency, use with depth/selector (default -1)
       --use-link-name      use link name for chapter title
 ```
@@ -140,7 +141,7 @@ go install github.com/lapwat/papeer@latest
 ```sh
 # use platform=darwin for MacOS
 platform=linux
-release=0.5.5
+release=0.6.3
 
 # download and extract
 curl -L https://github.com/lapwat/papeer/releases/download/v$release/papeer-v$release-$platform-amd64.tar.gz > papeer.tar.gz
@@ -153,7 +154,7 @@ sudo mv papeer /usr/local/bin
 
 ### Windows
 
-Download [latest release](https://github.com/lapwat/papeer/releases/download/v0.5.5/papeer-v0.5.5-windows-amd64.exe.zip).
+Download [latest release](https://github.com/lapwat/papeer/releases/download/v0.6.3/papeer-v0.6.3-windows-amd64.zip).
 
 ## MOBI support
 

book/book.go

@@ -1,27 +0,0 @@
-package book
-
-type book struct {
-	name     string
-	author   string
-	chapters []chapter
-}
-
-func New(name, author string) book {
-	return book{name, author, []chapter{}}
-}
-
-func (b *book) AddChapter(c chapter) {
-	b.chapters = append(b.chapters, c)
-}
-
-func (b book) Name() string {
-	return b.name
-}
-
-func (b book) Author() string {
-	return b.name
-}
-
-func (b *book) Chapters() []chapter {
-	return b.chapters
-}

book/chapter.go

@@ -9,6 +9,10 @@ type chapter struct {
 	config      *ScrapeConfig
 }
 
+func NewEmptyChapter() chapter {
+	return chapter{"", "", "", "", []chapter{}, NewScrapeConfigNoInclude()}
+}
+
 func NewChapter(body, name, author, content string, subChapters []chapter, config *ScrapeConfig) chapter {
 	return chapter{body, name, author, content, subChapters, config}
 }
@@ -21,6 +25,10 @@ func (c chapter) Name() string {
 	return c.name
 }
 
+func (c *chapter) SetName(name string) {
+	c.name = name
+}
+
 func (c chapter) Author() string {
 	return c.author
 }
@@ -32,3 +40,7 @@ func (c chapter) Content() string {
 func (c chapter) SubChapters() []chapter {
 	return c.subChapters
 }
+
+func (c *chapter) AddSubChapter(newChapter chapter) {
+	c.subChapters = append(c.subChapters, newChapter)
+}

book/format.go

@@ -24,6 +24,7 @@ func Filename(name string) string {
 func ToMarkdownString(c chapter) string {
 	markdown := ""
 
+	// chapter content
 	if c.config.Include {
 		// title
 		markdown += fmt.Sprintf("%s\n", c.Name())
@@ -37,8 +38,8 @@ func ToMarkdownString(c chapter) string {
 		markdown += fmt.Sprintf("%s\n\n\n", content)
 	}
 
+	// subchapters content
 	for _, sc := range c.SubChapters() {
-		// subchapters content
 		markdown += fmt.Sprintf("%s\n\n\n", ToMarkdownString(sc))
 	}
 
@@ -66,6 +67,44 @@ func ToMarkdown(c chapter, filename string) string {
 	return filename
 }
 
+func ToHtmlString(c chapter) string {
+	html := ""
+
+	// chapter content
+	if c.config.Include {
+		html += fmt.Sprintf("<h1>%s</h1>", c.Name())
+		html += c.Content()
+	}
+
+	// subchapters content
+	for _, sc := range c.SubChapters() {
+		html += ToHtmlString(sc)
+	}
+
+	return html
+}
+
+func ToHtml(c chapter, filename string) string {
+	if len(filename) == 0 {
+		filename = fmt.Sprintf("%s.html", Filename(c.Name()))
+	}
+
+	html := fmt.Sprintf("<html><head></head><body>%s</body></html>", ToHtmlString(c))
+
+	// write to file
+	f, err := os.Create(filename)
+	if err != nil {
+		log.Fatal(err)
+	}
+	_, err2 := f.WriteString(html)
+	if err2 != nil {
+		log.Fatal(err2)
+	}
+	f.Close()
+
+	return filename
+}
+
 func ToEpub(c chapter, filename string) string {
 	if len(filename) == 0 {
 		filename = fmt.Sprintf("%s.epub", Filename(c.Name()))
@@ -88,6 +127,7 @@ func ToEpub(c chapter, filename string) string {
 func AppendToEpub(e *epub.Epub, c chapter) {
 	content := ""
 
+	// chapter content
 	if c.config.Include {
 
 		if c.config.ImagesOnly == false {
@@ -129,6 +169,7 @@ func AppendToEpub(e *epub.Epub, c chapter) {
 
 	}
 
+	// subchapters content
 	for _, sc := range c.SubChapters() {
 		AppendToEpub(e, sc)
 	}

book/link.go

@@ -1,18 +1,10 @@
 package book
 
 type link struct {
-	href string
-	text string
+	Href string `json:"url"`
+	Text string `json:"name"`
 }
 
 func NewLink(href, text string) link {
 	return link{href, text}
 }
-
-func (c link) Href() string {
-	return c.href
-}
-
-func (c link) Text() string {
-	return c.text
-}

book/progress.go

@@ -27,7 +27,7 @@ func NewProgress(links []link, parent string, depth int) progress {
 	if len(links) <= 50 {
 		for index, link := range links {
 			bar := uiprogress.AddBar(1)
-			barText := fmt.Sprintf("%v#%v %v", indent, index+1, link.Text())
+			barText := fmt.Sprintf("%v#%v %v", indent, index+1, link.Text)
 			bar.AppendFunc(func(b *uiprogress.Bar) string {
 				return barText
 			})

book/scraper.go

@@ -36,6 +36,10 @@ func NewScrapeConfig() *ScrapeConfig {
 	return &ScrapeConfig{0, "", false, -1, 0, false, -1, -1, true, false, false}
 }
 
+func NewScrapeConfigNoInclude() *ScrapeConfig {
+	return &ScrapeConfig{0, "", false, -1, 0, false, -1, -1, false, false, false}
+}
+
 func NewScrapeConfigs(selectors []string) []*ScrapeConfig {
 	configs := []*ScrapeConfig{}
 
@@ -93,46 +97,6 @@ func NewScrapeConfigFake() *ScrapeConfig {
 	return config
 }
 
-func NewBookFromURL(url string, selector []string, name, author string, include, ImagesOnly, useLinkName, quiet bool, limit, offset, delay, threads int) book {
-	config1 := NewScrapeConfig()
-	config1.ImagesOnly = ImagesOnly
-	config1.UseLinkName = useLinkName
-
-	var chapters []chapter
-	var home chapter
-
-	if len(selector) > 0 {
-		config2 := NewScrapeConfig()
-		config2.Selector = selector[0]
-		config2.Limit = limit
-		config2.Offset = offset
-		config2.Delay = delay
-		config2.Threads = threads
-		config2.Include = include
-		config2.ImagesOnly = ImagesOnly
-		config2.UseLinkName = useLinkName
-		chapters, home = tableOfContent(url, config2, config1, quiet)
-	} else {
-		chapters = []chapter{NewChapterFromURL(url, "", []*ScrapeConfig{config1}, 0, func(index int, name string) {})}
-		home = chapters[0]
-	}
-
-	if len(name) == 0 {
-		name = home.Name()
-	}
-
-	if len(author) == 0 {
-		author = home.Author()
-	}
-
-	b := New(name, author)
-	for _, c := range chapters {
-		b.AddChapter(c)
-	}
-
-	return b
-}
-
 func NewChapterFromURL(url, linkName string, configs []*ScrapeConfig, index int, updateProgressBarName func(index int, name string)) chapter {
 	config := configs[0]
 
@@ -192,12 +156,12 @@ func NewChapterFromURL(url, linkName string, configs []*ScrapeConfig, index int,
 			// synchronous mode
 			for index, link := range links {
 				// and then use it to parse relative URLs
-				u, err := base.Parse(link.href)
+				u, err := base.Parse(link.Href)
 				if err != nil {
 					log.Fatal(err)
 				}
 
-				sc := NewChapterFromURL(u.String(), link.text, configs[1:], index, p.UpdateName)
+				sc := NewChapterFromURL(u.String(), link.Text, configs[1:], index, p.UpdateName)
 				subchapters[index] = sc
 				if config.Quiet == false {
 					p.Increment(index)
@@ -225,12 +189,12 @@ func NewChapterFromURL(url, linkName string, configs []*ScrapeConfig, index int,
 					defer wg.Done()
 
 					// and then use it to parse relative URLs
-					u, err := base.Parse(l.href)
+					u, err := base.Parse(l.Href)
 					if err != nil {
 						log.Fatal(err)
 					}
 
-					sc := NewChapterFromURL(u.String(), l.text, configs[1:], index, p.UpdateName)
+					sc := NewChapterFromURL(u.String(), l.Text, configs[1:], index, p.UpdateName)
 					subchapters[index] = sc
 
 					if config.Quiet == false {
@@ -250,27 +214,42 @@ func NewChapterFromURL(url, linkName string, configs []*ScrapeConfig, index int,
 		// we care about the content only if:
 		// - we include this level
 		// - we use the page name
-		content = article.Content
+
+		// parse HTML
+		doc, err := goquery.NewDocumentFromReader(strings.NewReader(article.Content))
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		// handle lazy images
+		doc.Find("img").Each(func(i int, source *goquery.Selection) {
+			src, exists := source.Attr("data-lazy-src")
+			if exists {
+				source.SetAttr("src", src)
+			}
+		})
+		doc.Find("source").Remove()
 
 		// extract images
 		if config.ImagesOnly {
 
-			// parse HTML
-			doc, err := goquery.NewDocumentFromReader(strings.NewReader(content))
-			if err != nil {
-				log.Fatal(err)
-			}
-
 			// append every image to content
 			content = ""
 			doc.Find("img").Each(func(i int, s *goquery.Selection) {
 				imageTag, _ := goquery.OuterHtml(s)
-				imageTag = strings.ReplaceAll(imageTag, "\n", "")
-
+				// imageTag = strings.ReplaceAll(imageTag, "\n", "")
 				content += imageTag
 			})
 
+		} else {
+
+			content, err = doc.Find("[id*=readability-page]").Html()
+			if err != nil {
+				log.Fatal(err)
+			}
+
 		}
+
 	}
 
 	return chapter{string(body), name, article.Byline, content, subchapters, config}
@@ -300,12 +279,12 @@ func tableOfContent(url string, config *ScrapeConfig, subConfig *ScrapeConfig, q
 
 		for index, l := range links {
 			// and then use it to parse relative URLs
-			u, err := base.Parse(l.href)
+			u, err := base.Parse(l.Href)
 			if err != nil {
 				log.Fatal(err)
 			}
 
-			chapters[index] = NewChapterFromURL(u.String(), l.text, []*ScrapeConfig{subConfig}, 0, func(index int, name string) {})
+			chapters[index] = NewChapterFromURL(u.String(), l.Text, []*ScrapeConfig{subConfig}, 0, func(index int, name string) {})
 
 			if quiet == false {
 				p.Increment(index)
@@ -338,12 +317,12 @@ func tableOfContent(url string, config *ScrapeConfig, subConfig *ScrapeConfig, q
 				defer wg.Done()
 
 				// and then use it to parse relative URLs
-				u, err := base.Parse(l.href)
+				u, err := base.Parse(l.Href)
 				if err != nil {
 					log.Fatal(err)
 				}
 
-				chapters[index] = NewChapterFromURL(u.String(), l.text, []*ScrapeConfig{subConfig}, 0, func(index int, name string) {})
+				chapters[index] = NewChapterFromURL(u.String(), l.Text, []*ScrapeConfig{subConfig}, 0, func(index int, name string) {})
 
 				if quiet == false {
 					p.Increment(index)
@@ -386,7 +365,12 @@ func GetLinks(url *urllib.URL, selector string, limit, offset int, reverse, incl
 		// RSS feed
 
 		for _, item := range feed.Items {
-			links = append(links, NewLink(item.Link, item.Title))
+			u, err := url.Parse(item.Link)
+			if err != nil {
+				log.Fatal(err)
+			}
+
+			links = append(links, NewLink(u.String(), item.Title))
 		}
 
 		pathMax = "RSS"
@@ -406,11 +390,16 @@ func GetLinks(url *urllib.URL, selector string, limit, offset int, reverse, incl
 		// visit and count link classes
 		c := colly.NewCollector()
 		c.OnHTML(selector, func(e *colly.HTMLElement) {
-			href := e.Attr("href")
 			text := strings.TrimSpace(e.Text)
 			path := GetPath(e.DOM)
 			key := path
 
+			u, err := url.Parse(e.Attr("href"))
+			if err != nil {
+				log.Fatal(err)
+			}
+			href := u.String()
+
 			if selectorSet {
 
 				// if selector is set, we use the selector specified by the user

cmd/get.go

@@ -21,17 +21,15 @@ type GetOptions struct {
 	output string
 	stdout bool
 	images bool
-	// ImagesOnly bool
-	quiet bool
+	quiet  bool
 
-	Selector []string
-	depth    int
-	limit    int
-	offset   int
-	reverse  bool
-	delay    int
-	threads  int
-	// includeUrl bool
+	Selector    []string
+	depth       int
+	limit       int
+	offset      int
+	reverse     bool
+	delay       int
+	threads     int
 	include     bool
 	useLinkName bool
 }
@@ -41,13 +39,13 @@ var getOpts *GetOptions
 func init() {
 	getOpts = &GetOptions{}
 
-	getCmd.PersistentFlags().StringVarP(&getOpts.name, "name", "n", "", "book name (default: page title)")
-	getCmd.PersistentFlags().StringVarP(&getOpts.author, "author", "a", "", "book author")
-	getCmd.PersistentFlags().StringVarP(&getOpts.Format, "format", "f", "md", "file format [md, epub, mobi]")
-	getCmd.PersistentFlags().StringVarP(&getOpts.output, "output", "", "", "file name (default: book name)")
-	getCmd.PersistentFlags().BoolVarP(&getOpts.stdout, "stdout", "", false, "print to standard output")
-	getCmd.PersistentFlags().BoolVarP(&getOpts.images, "images", "", false, "retrieve images only")
-	getCmd.PersistentFlags().BoolVarP(&getOpts.quiet, "quiet", "q", false, "hide progress bar")
+	getCmd.Flags().StringVarP(&getOpts.name, "name", "n", "", "book name (default: page title)")
+	getCmd.Flags().StringVarP(&getOpts.author, "author", "a", "", "book author")
+	getCmd.Flags().StringVarP(&getOpts.Format, "format", "f", "md", "file format [md, html, epub, mobi]")
+	getCmd.Flags().StringVarP(&getOpts.output, "output", "", "", "file name (default: book name)")
+	getCmd.Flags().BoolVarP(&getOpts.stdout, "stdout", "", false, "print to standard output")
+	getCmd.Flags().BoolVarP(&getOpts.images, "images", "", false, "retrieve images only")
+	getCmd.Flags().BoolVarP(&getOpts.quiet, "quiet", "q", false, "hide progress bar")
 
 	// common with list command
 	getCmd.Flags().StringSliceVarP(&getOpts.Selector, "selector", "s", []string{}, "table of contents CSS selector")
@@ -72,12 +70,13 @@ var getCmd = &cobra.Command{
 			return errors.New("requires an URL argument")
 		}
 
+		// check provided format is in list
 		formatEnum := map[string]bool{
 			"md":   true,
+			"html": true,
 			"epub": true,
 			"mobi": true,
 		}
-
 		if formatEnum[getOpts.Format] != true {
 			return fmt.Errorf("invalid format specified: %s", getOpts.Format)
 		}
@@ -131,7 +130,6 @@ var getCmd = &cobra.Command{
 		return nil
 	},
 	Run: func(cmd *cobra.Command, args []string) {
-		url := args[0]
 
 		// generate config for each level
 		configs := make([]*book.ScrapeConfig, len(getOpts.Selector))
@@ -161,7 +159,13 @@ var getCmd = &cobra.Command{
 			configs[index] = config
 		}
 
-		c := book.NewChapterFromURL(url, "", configs, 0, func(index int, name string) {})
+		// dummy root chapter to contain all subchapters
+		c := book.NewEmptyChapter()
+		for _, u := range args {
+			newChapter := book.NewChapterFromURL(u, "", configs, 0, func(index int, name string) {})
+			c.AddSubChapter(newChapter)
+		}
+		c.SetName(c.SubChapters()[0].Name())
 
 		if getOpts.Format == "md" {
 			filename := book.ToMarkdown(c, getOpts.output)
@@ -178,6 +182,21 @@ var getCmd = &cobra.Command{
 			}
 		}
 
+		if getOpts.Format == "html" {
+			filename := book.ToHtml(c, getOpts.output)
+
+			if getOpts.stdout {
+				bytesRead, err := ioutil.ReadFile(filename)
+				if err != nil {
+					log.Fatal(err)
+				}
+
+				fmt.Println(string(bytesRead))
+			} else {
+				fmt.Printf("Html saved to \"%s\"\n", filename)
+			}
+		}
+
 		if getOpts.Format == "epub" {
 			filename := book.ToEpub(c, getOpts.output)
 

cmd/list.go

@@ -1,6 +1,7 @@
 package cmd
 
 import (
+	"encoding/json"
 	"errors"
 	"fmt"
 	"log"
@@ -17,14 +18,15 @@ import (
 type ListOptions struct {
 	// url string
 
-	Selector []string
-	depth    int
-	limit    int
-	offset   int
-	reverse  bool
-	delay    int
-	threads  int
-	// includeUrl bool
+	output string
+
+	Selector    []string
+	depth       int
+	limit       int
+	offset      int
+	reverse     bool
+	delay       int
+	threads     int
 	include     bool
 	useLinkName bool
 }
@@ -34,11 +36,13 @@ var listOpts *ListOptions
 func init() {
 	listOpts = &ListOptions{}
 
+	listCmd.Flags().StringVarP(&listOpts.output, "output", "o", "table", "file format [table, json]")
+
 	// common with get command
 	listCmd.Flags().StringSliceVarP(&listOpts.Selector, "selector", "s", []string{}, "table of contents CSS selector")
 	listCmd.Flags().IntVarP(&listOpts.depth, "depth", "d", 0, "scraping depth")
 	listCmd.Flags().IntVarP(&listOpts.limit, "limit", "l", -1, "limit number of chapters, use with depth/selector")
-	listCmd.Flags().IntVarP(&listOpts.offset, "offset", "o", 0, "skip first chapters, use with depth/selector")
+	listCmd.Flags().IntVarP(&listOpts.offset, "offset", "", 0, "skip first chapters, use with depth/selector")
 	listCmd.Flags().BoolVarP(&listOpts.reverse, "reverse", "r", false, "reverse chapter order")
 	listCmd.Flags().IntVarP(&listOpts.delay, "delay", "", -1, "time in milliseconds to wait before downloading next chapter, use with depth/selector")
 	listCmd.Flags().IntVarP(&listOpts.threads, "threads", "t", -1, "download concurrency, use with depth/selector")
@@ -57,6 +61,16 @@ var listCmd = &cobra.Command{
 		if len(args) < 1 {
 			return errors.New("requires an URL argument")
 		}
+
+		// check provided output is in list
+		outputEnum := map[string]bool{
+			"table": true,
+			"json":  true,
+		}
+		if outputEnum[listOpts.output] != true {
+			return fmt.Errorf("invalid output specified: %s", listOpts.output)
+		}
+
 		return nil
 	},
 	Run: func(cmd *cobra.Command, args []string) {
@@ -74,14 +88,6 @@ var listCmd = &cobra.Command{
 			log.Fatal(err)
 		}
 
-		t := table.NewWriter()
-		t.SetOutputMirror(os.Stdout)
-		t.Style().Options.DrawBorder = false
-		t.Style().Options.SeparateColumns = false
-		t.Style().Options.SeparateHeader = false
-
-		t.SetTitle(home.Name())
-
 		// format selector path
 		pathArray := strings.Split(path, "<")
 		// reverse path
@@ -90,18 +96,50 @@ var listCmd = &cobra.Command{
 		}
 		pathFormatted := strings.Join(pathArray, ">")
 
-		t.AppendHeader(table.Row{"#", "Name", fmt.Sprintf("Url [%s]", pathFormatted)})
+		switch listOpts.output {
 
-		for index, link := range links {
-			u, err := base.Parse(link.Href())
+		// render as table
+		case "table":
+			t := table.NewWriter()
+			t.SetOutputMirror(os.Stdout)
+			t.Style().Options.DrawBorder = false
+			t.Style().Options.SeparateColumns = false
+			t.Style().Options.SeparateHeader = false
+
+			t.SetTitle(home.Name())
+			t.AppendHeader(table.Row{"#", "Name", fmt.Sprintf("Url [%s]", pathFormatted)})
+
+			for index, link := range links {
+				u, err := base.Parse(link.Href)
+				if err != nil {
+					log.Fatal(err)
+				}
+
+				t.AppendRow([]interface{}{index + 1, link.Text, u.String()})
+			}
+
+			t.Render()
+
+		// render as json
+		case "json":
+			book := make(map[string]interface{})
+			book["url"] = base.String()
+			if pathFormatted == "RSS" {
+				book["type"] = "RSS"
+			} else {
+				book["type"] = "HTML"
+			}
+			book["path"] = pathFormatted
+			book["name"] = home.Name()
+			book["chapters"] = links
+
+			bookJson, err := json.Marshal(book)
 			if err != nil {
 				log.Fatal(err)
 			}
 
-			t.AppendRow([]interface{}{index + 1, link.Text(), u.String()})
+			fmt.Println(string(bookJson))
 		}
 
-		t.Render()
-
 	},
 }

cmd/version.go

@@ -14,6 +14,6 @@ var versionCmd = &cobra.Command{
 	Use:   "version",
 	Short: "Print the version number of papeer",
 	Run: func(cmd *cobra.Command, args []string) {
-		fmt.Println("papeer v0.5.5")
+		fmt.Println("papeer v0.6.3")
 	},
 }

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/JohannesKaufmann/html-to-markdown v1.3.5
 	github.com/bmaupin/go-epub v1.0.1
 	github.com/go-shiori/go-readability v0.0.0-20220215145315-dd6828d2f09b
-	github.com/jedib0t/go-pretty/v6 v6.3.5
+	github.com/jedib0t/go-pretty/v6 v6.3.6
 	github.com/mmcdole/gofeed v1.1.3
 	github.com/spf13/cobra v1.5.0
 )
@@ -21,7 +21,7 @@ require (
 require (
 	github.com/andybalholm/cascadia v1.3.1 // indirect
 	github.com/antchfx/htmlquery v1.2.5 // indirect
-	github.com/antchfx/xmlquery v1.3.11 // indirect
+	github.com/antchfx/xmlquery v1.3.12 // indirect
 	github.com/antchfx/xpath v1.2.1 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.1 // indirect
 	github.com/go-shiori/dom v0.0.0-20210627111528-4e4722cd0d65 // indirect
@@ -30,7 +30,7 @@ require (
 	github.com/gogs/chardet v0.0.0-20211120154057-b7413eaefb8f // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/inconshreveable/mousetrap v1.0.1 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/kennygrant/sanitize v1.2.4 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect
@@ -38,15 +38,15 @@ require (
 	github.com/mmcdole/goxpp v0.0.0-20200921145534-2f3784f67354 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/rivo/uniseg v0.3.0 // indirect
+	github.com/rivo/uniseg v0.3.4 // indirect
 	github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca // indirect
 	github.com/sirupsen/logrus v1.9.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/temoto/robotstxt v1.1.2 // indirect
 	github.com/vincent-petithory/dataurl v1.0.0 // indirect
-	golang.org/x/net v0.0.0-20220726230323-06994584191e // indirect
-	golang.org/x/sys v0.0.0-20220727055044-e65921a090b8 // indirect
+	golang.org/x/net v0.0.0-20220809012201-f428fae20770 // indirect
+	golang.org/x/sys v0.0.0-20220808155132-1c4a2a72c664 // indirect
 	golang.org/x/text v0.3.7 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/protobuf v1.28.0 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
 )

go.sum

@@ -24,6 +24,8 @@ github.com/antchfx/xmlquery v1.3.10 h1:U2yMwr8U0KmGM2iDG2Ky/3LfxNsiK4uw1bSBkeMO9
 github.com/antchfx/xmlquery v1.3.10/go.mod h1:wojC/BxjEkjJt6dPiAqUzoXO5nIMWtxHS8PD8TmN4ks=
 github.com/antchfx/xmlquery v1.3.11 h1:8aRK7l3+dJjL8ZmwgVzG5AXysrP7Mss2424tfntKWKY=
 github.com/antchfx/xmlquery v1.3.11/go.mod h1:ywPcYkN0GvURUxXpUujaMVvuLSOYQBzoSfHKfAYezCE=
+github.com/antchfx/xmlquery v1.3.12 h1:6TMGpdjpO/P8VhjnaYPXuqT3qyJ/VsqoyNTmJzNBTQ4=
+github.com/antchfx/xmlquery v1.3.12/go.mod h1:3w2RvQvTz+DaT5fSgsELkSJcdNgkmg6vuXDEuhdwsPQ=
 github.com/antchfx/xpath v1.1.6/go.mod h1:Yee4kTMuNiPYJ7nSNorELQMr1J33uOpXDMByNYhvtNk=
 github.com/antchfx/xpath v1.1.8/go.mod h1:Yee4kTMuNiPYJ7nSNorELQMr1J33uOpXDMByNYhvtNk=
 github.com/antchfx/xpath v1.2.0 h1:mbwv7co+x0RwgeGAOHdrKy89GvHaGvxxBtPK0uF9Zr8=
@@ -123,11 +125,15 @@ github.com/grpc-ecosystem/grpc-gateway v1.9.0/go.mod h1:vNeuVxBJEsws4ogUvrchl83t
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
+github.com/inconshreveable/mousetrap v1.0.1 h1:U3uMjPSQEBMNp1lFxmllqCPM6P5u/Xq7Pgzkat/bFNc=
+github.com/inconshreveable/mousetrap v1.0.1/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/jawher/mow.cli v1.1.0/go.mod h1:aNaQlc7ozF3vw6IJ2dHjp2ZFiA4ozMIYY6PyuRJwlUg=
 github.com/jedib0t/go-pretty/v6 v6.3.1 h1:aOXiD9oqiuLH8btPQW6SfgtQN5zwhyfzZls8a6sPJ/I=
 github.com/jedib0t/go-pretty/v6 v6.3.1/go.mod h1:FMkOpgGD3EZ91cW8g/96RfxoV7bdeJyzXPYgz1L1ln0=
 github.com/jedib0t/go-pretty/v6 v6.3.5 h1:B6RuZT3Gz0NvFwADctw+gZn3cSA+jIHykXyd72zPgOY=
 github.com/jedib0t/go-pretty/v6 v6.3.5/go.mod h1:MgmISkTWDSFu0xOqiZ0mKNntMQ2mDgOcwOkwBEkMDJI=
+github.com/jedib0t/go-pretty/v6 v6.3.6 h1:A6w2BuyPMtf7M82BGRBys9bAba2C26ZX9lrlrZ7uH6U=
+github.com/jedib0t/go-pretty/v6 v6.3.6/go.mod h1:MgmISkTWDSFu0xOqiZ0mKNntMQ2mDgOcwOkwBEkMDJI=
 github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
 github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
@@ -183,6 +189,8 @@ github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/rivo/uniseg v0.3.0 h1:eyC18g7xB83Dv/xlJXLgNkRidVoR7nqFZBJvqo/K188=
 github.com/rivo/uniseg v0.3.0/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
+github.com/rivo/uniseg v0.3.4 h1:3Z3Eu6FGHZWSfNKJTOUiPatWwfc7DzJRU04jFUqJODw=
+github.com/rivo/uniseg v0.3.4/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
 github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
@@ -270,6 +278,7 @@ golang.org/x/net v0.0.0-20210505024714-0287a6fb4125/go.mod h1:9nx3DQGgdP8bBQD5qx
 golang.org/x/net v0.0.0-20210505214959-0714010a04ed/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20210614182718-04defd469f4e/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20210916014120-12bc252f5db8/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
 golang.org/x/net v0.0.0-20220425223048-2871e0cb64e4 h1:HVyaeDAYux4pnY+D/SiwmLOR36ewZ4iGQIIrtnuCjFA=
 golang.org/x/net v0.0.0-20220425223048-2871e0cb64e4/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
 golang.org/x/net v0.0.0-20220624214902-1bab6f366d9e/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
@@ -277,6 +286,8 @@ golang.org/x/net v0.0.0-20220725212005-46097bf591d3 h1:2yWTtPWWRcISTw3/o+s/Y4UOM
 golang.org/x/net v0.0.0-20220725212005-46097bf591d3/go.mod h1:AaygXjzTFtRAg2ttMY5RMuhpJ3cNnI0XpyFJD1iQRSM=
 golang.org/x/net v0.0.0-20220726230323-06994584191e h1:wOQNKh1uuDGRnmgF0jDxh7ctgGy/3P4rYWQRVJD4/Yg=
 golang.org/x/net v0.0.0-20220726230323-06994584191e/go.mod h1:AaygXjzTFtRAg2ttMY5RMuhpJ3cNnI0XpyFJD1iQRSM=
+golang.org/x/net v0.0.0-20220809012201-f428fae20770 h1:dIi4qVdvjZEjiMDv7vhokAZNGnz3kepwuXqFKYDdDMs=
+golang.org/x/net v0.0.0-20220809012201-f428fae20770/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -305,6 +316,8 @@ golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f h1:v4INt8xihDGvnrfjMDVXGxw9w
 golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220727055044-e65921a090b8 h1:dyU22nBWzrmTQxtNrr4dzVOvaw35nUYE279vF9UmsI8=
 golang.org/x/sys v0.0.0-20220727055044-e65921a090b8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220808155132-1c4a2a72c664 h1:v1W7bwXHsnLLloWYTVEdvGvA7BHMeBYsPcF0GLDxIRs=
+golang.org/x/sys v0.0.0-20220808155132-1c4a2a72c664/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -347,6 +360,8 @@ google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp0
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
 google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
+google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=