update dependencies

* add ci

* format code

* update go version

* update go file

* add kindlegen

* update go file

* update go file

* test ci

* multiline run

* edit go file

* fix tar

* mv kindlegen to usr local bin

.github/workflows/format.yml

@@ -0,0 +1,15 @@
+name: Format
+
+on:
+  push:
+    paths:
+      - '**.go'
+
+jobs:
+  format:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Check formatting
+      run: if [[ -n "$(gofmt -l .)" ]]; then exit 1; fi

.github/workflows/release.yml

@@ -0,0 +1,18 @@
+on:
+  release:
+    types: [created]
+
+jobs:
+  releases-matrix:
+    name: Release Go Binary
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        goos: [linux, darwin, windows]
+    steps:
+    - uses: actions/checkout@v3
+    - uses: wangyoucao577/go-release-action@v1.30
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        goos: ${{ matrix.goos }}
+        goarch: amd64

.github/workflows/test.yml

@@ -0,0 +1,27 @@
+name: Test
+
+on:
+  push:
+    paths:
+      - '**.go'
+      - 'go.mod'
+      - 'go.sum'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.17
+    - 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
+        tar xzvf kindlegen.tar.gz
+        chmod +x kindlegen
+        mv kindlegen /usr/local/bin
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Test
+      run: make test

Makefile

@@ -0,0 +1,14 @@
+format:
+	gofmt -s -w .
+
+test:
+	go test github.com/lapwat/papeer/book
+
+install:
+	go install
+
+clean:
+	find . -maxdepth 1 -not -name 'README.md' -name '*.md' -delete
+	find . -maxdepth 1 -name '*.epub' -delete
+	find . -maxdepth 1 -name '*.mobi' -delete
+	find . -maxdepth 1 -name 'papeer-v*' -delete

README.md

@@ -1,17 +1,128 @@
+# 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.
+
+# Table of contents
+
+- [Usage](#usage)
+  * [Scrape a web page](#scrape-a-web-page)
+  * [Scrape a whole website](#scrape-a-whole-website)
+    + [`depth` option](#-depth--option)
+    + [`selector` option](#-selector--option)
+    + [Display the table of contents](#display-the-table-of-contents)
+    + [Scrape time](#scrape-time)
+- [Installation](#installation)
+  * [From source](#from-source)
+  * [From binary](#from-binary)
+    + [Linux / MacOS](#linux---macos)
+    + [Windows](#windows)
+  * [MOBI support](#mobi-support)
+- [Autocompletion](#autocompletion)
+- [Dependencies](#dependencies)
+
+# Usage
+
+## Scrape a web page
+
+The `get` command lets you retrieve the content of any web page or RSS feed.
+
 ```
-❯ papeer get --format epub --recursive --delay 500 --limit 10 https://news.ycombinator.com/
+Scrape URL content
-   6s [===============================================>--------------------]  70% Status: 7 out of 10 chapters
+
-   0s [====================================================================] 100% 1. Three ex-US intelligence officers admit hacking for UAE
+Usage:
-   0s [====================================================================] 100% 2. Show HN: Time Travel Debugger
+  papeer get URL [flags]
-   0s [====================================================================] 100% 3. How much faster is Java 17?
+
-   0s [====================================================================] 100% 4. The First Webcam Was Invented to Keep an Eye on a Coffee Pot
+Examples:
-   0s [====================================================================] 100% 5. Nikon's 2021 Photomicrography Competition Winners
+papeer get https://www.eff.org/cyberspace-independence
-   0s [====================================================================] 100% 6. HTTP Status 418 – I'm a teapot
+
-   0s [====================================================================] 100% 7. H3: Hexagonal hierarchical geospatial indexing system
+Flags:
-  --- [--------------------------------------------------------------------]   0% 8. Automatic cipher suite ordering in Go’s crypto/tls
+  -a, --author string      book author
-  --- [--------------------------------------------------------------------]   0% 9. Find engineering roles at over 800 YC-funded startups
+      --delay int          time in milliseconds to wait before downloading next chapter, use with depth/selector (default -1)
-  --- [--------------------------------------------------------------------]   0% 10. Futarchy: Robin Hanson on prediction markets
+  -d, --depth int          scraping depth
-Ebook saved to "Hacker_News.epub"
+  -f, --format string      file format [stdout, md, epub, mobi] (default "md")
+  -h, --help               help for get
+      --images             retrieve images only
+  -i, --include            include URL as first chapter, use with depth/selector
+  -l, --limit int          limit number of chapters, use with depth/selector (default -1)
+  -n, --name string        book name (default: page title)
+  -o, --offset int         skip first chapters, use with depth/selector
+      --output string      file name (default: book name)
+  -q, --quiet              hide progress bar
+  -r, --reverse            reverse chapter order
+  -s, --selector strings   table of contents CSS selector
+  -t, --threads int        download concurrency, use with depth/selector (default -1)
+      --use-link-name      use link name for chapter title
+```
+
+## Scrape a whole website
+
+If a navigation menu is present on a website, you can scrape the content of each page.
+
+You can activate this mode by using the `depth` or `selector` options.
+
+### `depth` option
+
+This option defaults to 0, `papeer` will grab only the main page.
+
+This option defaults to 1 if the `limit` option is specified.
+
+If you specify a value greater than 0, `papeer` will grab pages as deep as the value you specify.
+
+> Using `include` option will include all intermediary levels into the book.
+
+### `selector` option
+
+If this option is not specified, `papeer` will grab only the one page.
+
+If this option is specified, `papeer` will select the links (a HTML tag) present on the main page, then grab each one of them.
+
+You can chain this option to grab several level of pages with diferent selectors for each level.
+
+### Display the table of contents
+
+Before actually scraping a whole website, it is a good idea to use the `list` command. This command is like a **dry run**, which lets you vizualize the content before actually retrieving it. You can use several options to customize the table of contents extraction, such as `selector`, `limit`, `offset`, `reverse` and `include`. Type `papeer list --help` for more information about those options.
+
+```sh
+papeer list https://12factor.net/ -s 'section.concrete>article>h2>a'
+```
+```
+ #  NAME                    URL                                    
+ 1  I. Codebase             https://12factor.net/codebase          
+ 2  II. Dependencies        https://12factor.net/dependencies      
+ 3  III. Config             https://12factor.net/config            
+ 4  IV. Backing services    https://12factor.net/backing-services  
+ 5  V. Build, release, run  https://12factor.net/build-release-run 
+ 6  VI. Processes           https://12factor.net/processes         
+ 7  VII. Port binding       https://12factor.net/port-binding      
+ 8  VIII. Concurrency       https://12factor.net/concurrency       
+ 9  IX. Disposability       https://12factor.net/disposability     
+10  X. Dev/prod parity      https://12factor.net/dev-prod-parity   
+11  XI. Logs                https://12factor.net/logs              
+12  XII. Admin processes    https://12factor.net/admin-processes
+```
+
+### Scrape time
+
+Once you are satisfied with the table of contents listed by the `ls` command, you can actually scrape the content of those pages. You can use the same options that you specified for the `ls` command. You can specify `delay` and `threads` options when using `selector` or `depth` options.
+
+```sh
+papeer get https://12factor.net/ --selector='section.concrete>article>h2>a'
+```
+```
+[======================================>-----------------------------] Chapters 7 / 12
+[====================================================================] 1. I. Codebase
+[====================================================================] 2. II. Dependencies
+[====================================================================] 3. III. Config
+[====================================================================] 4. IV. Backing services
+[====================================================================] 5. V. Build, release, run
+[====================================================================] 6. VI. Processes
+[====================================================================] 7. VII. Port binding
+[--------------------------------------------------------------------] 8. VIII. Concurrency
+[--------------------------------------------------------------------] 9. IX. Disposability
+[--------------------------------------------------------------------] 10. X. Dev/prod parity
+[--------------------------------------------------------------------] 11. XI. Logs
+[--------------------------------------------------------------------] 12. XII. Admin processes
+Markdown saved to "The_Twelve-Factor_App.md"
 ```
 
 # Installation
@@ -19,26 +130,34 @@ Ebook saved to "Hacker_News.epub"
 ## From source
 
 ```sh
-go get -u github.com/lapwat/papeer
+go install github.com/lapwat/papeer@latest
 ```
 
 ## From binary
 
-### On Linux / MacOS
+### Linux / MacOS
 
 ```sh
+# use platform=darwin for MacOS
 platform=linux
-# platform=darwin for MacOS
+release=0.5.5
-curl -L https://github.com/lapwat/papeer/releases/download/v0.1.0/papeer-v0.1.0-$platform-amd64 > papeer
+
-chmod +x papeer
+# download and extract
+curl -L https://github.com/lapwat/papeer/releases/download/v$release/papeer-v$release-$platform-amd64.tar.gz > papeer.tar.gz
+tar xzvf papeer.tar.gz
+rm papeer.tar.gz
+
+# move to user binaries
 sudo mv papeer /usr/local/bin
 ```
 
-### On Windows
+### Windows
 
-Download [latest release](https://github.com/lapwat/papeer/releases/download/v0.1.0/papeer-v0.1.0-windows-amd64.exe).
+Download [latest release](https://github.com/lapwat/papeer/releases/download/v0.5.5/papeer-v0.5.5-windows-amd64.exe.zip).
 
-## Install kindlegen to export websites to MOBI (optional)
+## MOBI support
+
+Install kindlegen to convert websites, Linux only
 
 ```sh
 TMPDIR=$(mktemp -d -t papeer-XXXXX)
@@ -49,37 +168,6 @@ sudo mv $TMPDIR/kindlegen /usr/local/bin
 rm -rf $TMPDIR
 ```
 
-# Usage
-
-```
-Browse the web in the eink era
-
-Usage:
-  papeer [flags]
-  papeer [command]
-
-Available Commands:
-  completion  generate the autocompletion script for the specified shell
-  get         Scrape URL content
-  help        Help about any command
-  ls          Print table of content
-  version     Print the version number of papeer
-
-Flags:
-  -d, --delay int         time to wait before downloading next chapter, in milliseconds (default -1)
-  -f, --format string     file format [md, epub, mobi] (default "md")
-  -h, --help              help for papeer
-  -i, --include           include URL as first chapter, in resursive mode
-  -l, --limit int         limit number of chapters, in recursive mode (default -1)
-  -o, --output string     output file
-  -q, --quiet             do not show logs
-  -r, --recursive         create one chapter per natigation item
-  -s, --selector string   table of content CSS selector
-      --stdout            print to standard output
-
-Use "papeer [command] --help" for more information about a command.
-```
-
 # Autocompletion
 
 Execute this command in your current shell, or add it to your `.bashrc`.
@@ -88,10 +176,10 @@ Execute this command in your current shell, or add it to your `.bashrc`.
 . <(papeer completion bash)
 ```
 
-Type `papeer completion bash -h` for more information.
-
 You can replace `bash` by your own shell (zsh, fish or powershell).
 
+Type `papeer completion bash -h` for more information.
+
 # Dependencies
 
 - `cobra` command line interface

book/chapter.go

@@ -1,13 +1,20 @@
 package book
 
 type chapter struct {
-	name    string
+	body        string
-	author  string
+	name        string
-	content string
+	author      string
+	content     string
+	subChapters []chapter
+	config      *ScrapeConfig
 }
 
-func NewChapter(name, author, content string) chapter {
+func NewChapter(body, name, author, content string, subChapters []chapter, config *ScrapeConfig) chapter {
-	return chapter{name, author, content}
+	return chapter{body, name, author, content, subChapters, config}
+}
+
+func (c chapter) Body() string {
+	return c.body
 }
 
 func (c chapter) Name() string {
@@ -21,3 +28,7 @@ func (c chapter) Author() string {
 func (c chapter) Content() string {
 	return c.content
 }
+
+func (c chapter) SubChapters() []chapter {
+	return c.subChapters
+}

book/format.go

@@ -0,0 +1,164 @@
+package book
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+	"strings"
+
+	md "github.com/JohannesKaufmann/html-to-markdown"
+	"github.com/PuerkitoBio/goquery"
+	epub "github.com/bmaupin/go-epub"
+)
+
+func Filename(name string) string {
+	filename := name
+
+	filename = strings.ReplaceAll(filename, " ", "_")
+	filename = strings.ReplaceAll(filename, "/", "")
+
+	return filename
+}
+
+func ToMarkdownString(c chapter) string {
+	markdown := ""
+
+	if c.config.Include {
+		// title
+		markdown += fmt.Sprintf("%s\n", c.Name())
+		markdown += fmt.Sprintf("%s\n\n", strings.Repeat("=", len(c.Name())))
+
+		// convert content to markdown
+		content, err := md.NewConverter("", true, nil).ConvertString(c.Content())
+		if err != nil {
+			log.Fatal(err)
+		}
+		markdown += fmt.Sprintf("%s\n\n\n", content)
+	}
+
+	for _, sc := range c.SubChapters() {
+		// subchapters content
+		markdown += fmt.Sprintf("%s\n\n\n", ToMarkdownString(sc))
+	}
+
+	return markdown
+}
+
+func ToMarkdown(c chapter, filename string) string {
+	if len(filename) == 0 {
+		filename = fmt.Sprintf("%s.md", Filename(c.Name()))
+	}
+
+	markdown := ToMarkdownString(c)
+
+	// write to file
+	f, err := os.Create(filename)
+	if err != nil {
+		log.Fatal(err)
+	}
+	_, err2 := f.WriteString(markdown)
+	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()))
+	}
+
+	// init ebook
+	e := epub.NewEpub(c.Name())
+	e.SetAuthor(c.Author())
+
+	AppendToEpub(e, c)
+
+	err := e.Write(filename)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	return filename
+}
+
+func AppendToEpub(e *epub.Epub, c chapter) {
+	content := ""
+
+	if c.config.Include {
+
+		if c.config.ImagesOnly == false {
+			content = c.Content()
+		}
+
+		// parse content
+		doc, err := goquery.NewDocumentFromReader(strings.NewReader(c.Content()))
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		// download images and replace src in img tags of content
+		doc.Find("img").Each(func(i int, s *goquery.Selection) {
+			src, _ := s.Attr("src")
+			src = strings.Split(src, "?")[0] // remove query part
+			imagePath, _ := e.AddImage(src, "")
+
+			if c.config.ImagesOnly {
+				imageTag, _ := goquery.OuterHtml(s)
+				content += strings.Replace(imageTag, src, imagePath, 1)
+			} else {
+				content = strings.Replace(content, src, imagePath, 1)
+			}
+		})
+
+		html := ""
+		// add title only if ImagesOnly = false
+		if c.config.ImagesOnly == false {
+			html += fmt.Sprintf("<h1>%s</h1>", c.Name())
+		}
+		html += content
+
+		//  write to epub file
+		_, err = e.AddSection(html, c.Name(), "", "")
+		if err != nil {
+			log.Fatal(err)
+		}
+
+	}
+
+	for _, sc := range c.SubChapters() {
+		AppendToEpub(e, sc)
+	}
+}
+
+func ToMobi(c chapter, filename string) string {
+	if len(filename) == 0 {
+		filename = fmt.Sprintf("%s.mobi", Filename(c.Name()))
+	} else {
+
+		// add .mobi extension if not specified
+		if strings.HasSuffix(filename, ".mobi") == false {
+			filename = fmt.Sprintf("%s.mobi", filename)
+		}
+
+	}
+
+	filenameEPUB := strings.ReplaceAll(filename, ".mobi", ".epub")
+	ToEpub(c, filenameEPUB)
+
+	exec.Command("kindlegen", filenameEPUB).Run()
+	// exec command always returns status 1 even if it succeed
+	// if err != nil {
+	// 	log.Fatal(err)
+	// }
+
+	err := os.Remove(filenameEPUB)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	return filename
+}

book/format_test.go

@@ -0,0 +1,127 @@
+package book
+
+import (
+	"errors"
+	"os"
+	"testing"
+)
+
+func TestFilename(t *testing.T) {
+
+	got := Filename("This is a chapter / book")
+	want := "This_is_a_chapter__book"
+
+	if got != want {
+		t.Errorf("got %q, wanted %q", got, want)
+	}
+
+}
+
+func TestToMarkdownString(t *testing.T) {
+
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{NewScrapeConfig()}, 0, func(index int, name string) {})
+
+	got := ToMarkdownString(c)
+	want := "Books\n=====\n\n- [Discours de la Méthode](https://books.lapw.at/posts/ren%C3%A9-descartes-discours-de-la-m%C3%A9thode/)clock 98 min read -\n1637\n\n- [The Twelve-Factor App](https://books.lapw.at/posts/adam-wiggins-the-twelve-factor-app/)clock 22 min read -\n2011\n\n\n"
+
+	if got != want {
+		t.Errorf("got %q, wanted %q", got, want)
+	}
+
+}
+
+func TestToMarkdown(t *testing.T) {
+
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{NewScrapeConfig()}, 0, func(index int, name string) {})
+	ToMarkdown(c, "")
+
+	filename := "Books.md"
+	if _, err := os.Stat(filename); errors.Is(err, os.ErrNotExist) {
+		t.Errorf("%s does not exist: %v", filename, err)
+	} else {
+		if err := os.Remove(filename); err != nil {
+			t.Errorf("cannot remove %v: %v", filename, err)
+		}
+	}
+
+}
+
+func TestToMarkdownFilename(t *testing.T) {
+
+	filename := "ebook.md"
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{NewScrapeConfig()}, 0, func(index int, name string) {})
+	ToMarkdown(c, filename)
+
+	if _, err := os.Stat(filename); errors.Is(err, os.ErrNotExist) {
+		t.Errorf("%s does not exist: %v", filename, err)
+	} else {
+		if err := os.Remove(filename); err != nil {
+			t.Errorf("cannot remove %v: %v", filename, err)
+		}
+	}
+
+}
+
+func TestToEpub(t *testing.T) {
+
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{NewScrapeConfig()}, 0, func(index int, name string) {})
+	ToEpub(c, "")
+
+	filename := "Books.epub"
+	if _, err := os.Stat(filename); errors.Is(err, os.ErrNotExist) {
+		t.Errorf("%s does not exist: %v", filename, err)
+	} else {
+		if err := os.Remove(filename); err != nil {
+			t.Errorf("cannot remove %v: %v", filename, err)
+		}
+	}
+
+}
+
+func TestToEpubFilename(t *testing.T) {
+
+	filename := "ebook.epub"
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{NewScrapeConfig()}, 0, func(index int, name string) {})
+	ToEpub(c, filename)
+
+	if _, err := os.Stat(filename); errors.Is(err, os.ErrNotExist) {
+		t.Errorf("%s does not exist: %v", filename, err)
+	} else {
+		if err := os.Remove(filename); err != nil {
+			t.Errorf("cannot remove %v: %v", filename, err)
+		}
+	}
+
+}
+
+func TestToMobi(t *testing.T) {
+
+	filename := "ebook.mobi"
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{NewScrapeConfig()}, 0, func(index int, name string) {})
+	ToMobi(c, filename)
+
+	if _, err := os.Stat(filename); errors.Is(err, os.ErrNotExist) {
+		t.Errorf("%s does not exist: %v", filename, err)
+	} else {
+		if err := os.Remove(filename); err != nil {
+			t.Errorf("cannot remove %v: %v", filename, err)
+		}
+	}
+
+}
+
+func TestToMobiFilename(t *testing.T) {
+
+	filename := "ebook.mobi"
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{NewScrapeConfig()}, 0, func(index int, name string) {})
+	ToMobi(c, filename)
+
+	if _, err := os.Stat(filename); errors.Is(err, os.ErrNotExist) {
+		t.Errorf("%s does not exist: %v", filename, err)
+	} else {
+		if err := os.Remove(filename); err != nil {
+			t.Errorf("cannot remove %v: %v", filename, err)
+		}
+	}
+
+}

book/link.go

@@ -3,11 +3,10 @@ package book
 type link struct {
 	href string
 	text string
-	class string
 }
 
-func NewLink(href, text, class string) link {
+func NewLink(href, text string) link {
-	return link{href, text, class}
+	return link{href, text}
 }
 
 func (c link) Href() string {
@@ -17,7 +16,3 @@ func (c link) Href() string {
 func (c link) Text() string {
 	return c.text
 }
-
-func (c link) Class() string {
-	return c.class
-}

book/progress.go

@@ -0,0 +1,59 @@
+package book
+
+import (
+	"fmt"
+	"strings"
+
+	"github.com/gosuri/uiprogress"
+)
+
+type progress struct {
+	global      *uiprogress.Bar
+	individuals []*uiprogress.Bar
+}
+
+func NewProgress(links []link, parent string, depth int) progress {
+	uiprogress.Start()
+
+	global := uiprogress.AddBar(len(links))
+	indentGlobal := strings.Repeat("> ", depth)
+	global.AppendFunc(func(b *uiprogress.Bar) string {
+		return fmt.Sprintf("%v%v (%v / %v)", indentGlobal, parent, b.Current(), len(links))
+	})
+
+	// hide individual bars if more than 50 chapters
+	individuals := []*uiprogress.Bar{}
+	indent := strings.Repeat("- ", depth)
+	if len(links) <= 50 {
+		for index, link := range links {
+			bar := uiprogress.AddBar(1)
+			barText := fmt.Sprintf("%v#%v %v", indent, index+1, link.Text())
+			bar.AppendFunc(func(b *uiprogress.Bar) string {
+				return barText
+			})
+			individuals = append(individuals, bar)
+		}
+	}
+
+	return progress{global, individuals}
+}
+
+func (p *progress) IncrementGlobal() {
+	p.global.Incr()
+}
+
+func (p *progress) Increment(index int) {
+	p.IncrementGlobal()
+	if len(p.individuals) > index {
+		p.individuals[index].Incr()
+	}
+}
+
+func (p *progress) UpdateName(index int, name string) {
+	if len(p.individuals) > index {
+		barText := fmt.Sprintf("%s", name)
+		p.individuals[index].AppendFunc(func(b *uiprogress.Bar) string {
+			return barText
+		})
+	}
+}

book/scraper.go

@@ -1,9 +1,12 @@
 package book
 
 import (
+	"bytes"
 	"fmt"
+	"io"
 	"log"
 	"math"
+	"net/http"
 	urllib "net/url"
 	"strings"
 	"sync"
@@ -12,97 +15,325 @@ import (
 	"github.com/PuerkitoBio/goquery"
 	readability "github.com/go-shiori/go-readability"
 	colly "github.com/gocolly/colly/v2"
-	"github.com/gosuri/uiprogress"
+	"github.com/mmcdole/gofeed"
 )
 
-func NewBookFromURL(url, selector string, recursive, include bool, limit, delay int) book {
+type ScrapeConfig struct {
-	if recursive {
+	Depth       int
-		home := NewChapterFromURL(url)
+	Selector    string
-		b := New(home.Name(), home.Author())
+	Quiet       bool
+	Limit       int
+	Offset      int
+	Reverse     bool
+	Delay       int
+	Threads     int
+	Include     bool
+	ImagesOnly  bool
+	UseLinkName bool
+}
 
-		chapters := tableOfContent(url, selector, limit, delay)
+func NewScrapeConfig() *ScrapeConfig {
-		if include {
+	return &ScrapeConfig{0, "", false, -1, 0, false, -1, -1, true, false, false}
-			b.AddChapter(home)
+}
-		}
-		for _, c := range chapters {
-			b.AddChapter(c)
-		}
 
-		return b
+func NewScrapeConfigs(selectors []string) []*ScrapeConfig {
+	configs := []*ScrapeConfig{}
+
+	for _, s := range selectors {
+		config := NewScrapeConfig()
+		config.Selector = s
+
+		configs = append(configs, config)
+	}
+
+	return configs
+}
+
+func NewScrapeConfigsAjin() []*ScrapeConfig {
+	config0 := NewScrapeConfig()
+	config0.Depth = 0
+	config0.Selector = ".dt>a"
+	config0.Limit = 3
+	config0.Offset = 0
+	config0.Delay = 5000
+	config0.Include = false
+
+	config1 := NewScrapeConfig()
+	config1.Depth = 1
+	config1.Selector = ".nav_apb>a"
+	config1.Limit = 3
+	config1.Offset = 1
+	config1.Delay = 5000
+	config1.Include = false
+
+	config2 := NewScrapeConfig()
+	config2.Depth = 2
+	config2.ImagesOnly = true
+
+	return []*ScrapeConfig{config0, config1, config2}
+}
+
+func NewScrapeConfigsWikipedia() []*ScrapeConfig {
+	config0 := NewScrapeConfig()
+	config0.Depth = 0
+	config0.Threads = -1
+	config0.Include = true
+
+	config1 := NewScrapeConfig()
+	config1.Depth = 1
+	config1.Include = true
+
+	return []*ScrapeConfig{config0, config1}
+}
+
+func NewScrapeConfigFake() *ScrapeConfig {
+	config := NewScrapeConfig()
+	config.Include = false
+
+	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 {
-		c := NewChapterFromURL(url)
+		chapters = []chapter{NewChapterFromURL(url, "", []*ScrapeConfig{config1}, 0, func(index int, name string) {})}
-		b := New(c.Name(), c.Author())
+		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 string) chapter {
-	article, err := readability.FromURL(url, 30*time.Second)
-	if err != nil {
-		log.Fatalf("failed to parse %s, %v\n", url, err)
 	}
 
-	return chapter{article.Title, article.Byline, article.Content}
+	return b
 }
 
-func tableOfContent(url, selector string, limit, delay int) []chapter {
+func NewChapterFromURL(url, linkName string, configs []*ScrapeConfig, index int, updateProgressBarName func(index int, name string)) chapter {
+	config := configs[0]
+
 	base, err := urllib.Parse(url)
 	if err != nil {
 		log.Fatal(err)
 	}
 
-	links := GetLinks(base, selector)
+	// get page body
-	if limit != -1 {
+	response, err := http.Get(url)
-		limit = int(math.Min(float64(limit), float64(len(links))))
+	if err != nil {
-		links = links[:limit]
+		log.Fatal(err)
+	}
+	defer response.Body.Close()
+
+	// duplicate response stream
+	readabilityReader := &bytes.Buffer{}
+	bodyReader := io.TeeReader(response.Body, readabilityReader)
+
+	// extract HTML body
+	body, err := io.ReadAll(bodyReader)
+
+	// extract article content and metadata
+	article, err := readability.FromReader(readabilityReader, base)
+	if err != nil {
+		log.Fatalf("failed to parse %s, %v\n", url, err)
 	}
 
-	chapters := make([]chapter, len(links))
+	name := linkName
+	if config.UseLinkName == false {
+		name = article.Title
 
-	// init global progress bar
+		// notify progressbar with new name
-	uiprogress.Start()
+		updateProgressBarName(index, name)
-	barGlobal := uiprogress.AddBar(len(links)).AppendCompleted().PrependElapsed()
-	barGlobal.AppendFunc(func(b *uiprogress.Bar) string {
-		return fmt.Sprintf("Status: %d out of %d chapters", b.Current(), len(links))
-	})
-
-	// init progress bars
-	bars := []*uiprogress.Bar{}
-	for index, link := range links {
-		bar := uiprogress.AddBar(1).AppendCompleted().PrependElapsed()
-		barText := fmt.Sprintf("%d. %s", index+1, link.text)
-		bar.AppendFunc(func(b *uiprogress.Bar) string {
-			return barText
-		})
-		bars = append(bars, bar)
 	}
 
-	if delay >= 0 {
+	var subchapters []chapter
-		for index, link := range links {
+	if len(configs) > 1 {
-			// and then use it to parse relative URLs
+
-			u, err := base.Parse(link.href)
+		// retrieve links on page
+		links, _, _, err := GetLinks(base, config.Selector, config.Limit, config.Offset, config.Reverse, false)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		// init progess bar
+		var p progress
+		if config.Quiet == false {
+			p = NewProgress(links, name, config.Depth)
+		}
+
+		// init chapters list
+		subchapters = make([]chapter, len(links))
+
+		if config.Delay >= 0 {
+
+			// synchronous mode
+			for index, link := range links {
+				// and then use it to parse relative URLs
+				u, err := base.Parse(link.href)
+				if err != nil {
+					log.Fatal(err)
+				}
+
+				sc := NewChapterFromURL(u.String(), link.text, configs[1:], index, p.UpdateName)
+				subchapters[index] = sc
+				if config.Quiet == false {
+					p.Increment(index)
+				}
+
+				time.Sleep(time.Duration(config.Delay) * time.Millisecond)
+			}
+
+		} else {
+			// asynchronous mode
+			var wg sync.WaitGroup
+
+			threads := config.Threads
+			if threads == -1 {
+				threads = len(links)
+			}
+			semaphore := make(chan bool, threads)
+
+			for index, l := range links {
+
+				wg.Add(1)
+				semaphore <- true
+
+				go func(index int, l link) {
+					defer wg.Done()
+
+					// and then use it to parse relative URLs
+					u, err := base.Parse(l.href)
+					if err != nil {
+						log.Fatal(err)
+					}
+
+					sc := NewChapterFromURL(u.String(), l.text, configs[1:], index, p.UpdateName)
+					subchapters[index] = sc
+
+					if config.Quiet == false {
+						p.Increment(index)
+					}
+
+					<-semaphore
+				}(index, l)
+			}
+			wg.Wait()
+		}
+	}
+
+	content := ""
+	if config.Include {
+
+		// we care about the content only if:
+		// - we include this level
+		// - we use the page name
+		content = article.Content
+
+		// extract images
+		if config.ImagesOnly {
+
+			// parse HTML
+			doc, err := goquery.NewDocumentFromReader(strings.NewReader(content))
 			if err != nil {
 				log.Fatal(err)
 			}
 
-			chapters[index] = NewChapterFromURL(u.String())
+			// 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", "")
 
-			bars[index].Incr()
+				content += imageTag
-			barGlobal.Incr()
+			})
 
-			// do not wait after downloading last chapter
+		}
-			if index < len(links)-1 {
+	}
-				time.Sleep(time.Duration(delay) * time.Millisecond)
+
+	return chapter{string(body), name, article.Byline, content, subchapters, config}
+}
+
+func tableOfContent(url string, config *ScrapeConfig, subConfig *ScrapeConfig, quiet bool) ([]chapter, chapter) {
+	base, err := urllib.Parse(url)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	links, _, home, err := GetLinks(base, config.Selector, config.Limit, config.Offset, config.Reverse, config.Include)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	chapters := make([]chapter, len(links))
+	delay := config.Delay
+
+	var p progress
+	if quiet == false {
+		p = NewProgress(links, "", 0)
+	}
+
+	if delay >= 0 {
+		// synchronous mode
+
+		for index, l := range links {
+			// and then use it to parse relative URLs
+			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) {})
+
+			if quiet == false {
+				p.Increment(index)
+			}
+
+			// short sleep for last chapter to let the progress bar update
+			if index == len(links)-1 {
+				delay = 100
+			}
+
+			time.Sleep(time.Duration(delay) * time.Millisecond)
 		}
 
 	} else {
+		// asynchronous mode
 		var wg sync.WaitGroup
+
+		threads := config.Threads
+		if threads == -1 {
+			threads = len(links)
+		}
+		semaphore := make(chan bool, threads)
+
 		for index, l := range links {
 
 			wg.Add(1)
+			semaphore <- true
+
 			go func(index int, l link) {
 				defer wg.Done()
 
@@ -112,15 +343,19 @@ func tableOfContent(url, selector string, limit, delay int) []chapter {
 					log.Fatal(err)
 				}
 
-				chapters[index] = NewChapterFromURL(u.String())
+				chapters[index] = NewChapterFromURL(u.String(), l.text, []*ScrapeConfig{subConfig}, 0, func(index int, name string) {})
 
-				bars[index].Incr()
+				if quiet == false {
-				barGlobal.Incr()
+					p.Increment(index)
+				}
+
+				<-semaphore
 			}(index, l)
 		}
 		wg.Wait()
 	}
-	return chapters
+
+	return chapters, home
 }
 
 func GetPath(elm *goquery.Selection) string {
@@ -128,7 +363,7 @@ func GetPath(elm *goquery.Selection) string {
 
 	for {
 		selector := strings.ToLower(goquery.NodeName(elm))
-		if selector == "" {
+		if len(selector) == 0 {
 			break
 		}
 
@@ -140,60 +375,101 @@ func GetPath(elm *goquery.Selection) string {
 	return join
 }
 
+func GetLinks(url *urllib.URL, selector string, limit, offset int, reverse, include bool) ([]link, string, chapter, error) {
+	var links []link
+	var pathMax string
 
-func GetLinks(url *urllib.URL, selector string) []link {
+	parser := gofeed.NewParser()
-	selectorSet := true
+	feed, err := parser.ParseURL(url.String())
-	if selector == "" {
+
-		selector = "a"
+	if err == nil {
-		selectorSet = false
+		// RSS feed
+
+		for _, item := range feed.Items {
+			links = append(links, NewLink(item.Link, item.Title))
+		}
+
+		pathMax = "RSS"
+	} else {
+		// HTML website
+
+		selectorSet := true
+		if len(selector) == 0 {
+			selector = "a"
+			selectorSet = false
+		}
+
+		pathLinks := map[string][]link{}
+		pathCount := map[string]int{}
+		pathMax = ""
+
+		// 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
+
+			if selectorSet {
+
+				// if selector is set, we use the selector specified by the user
+
+				key = selector
+				pathLinks[key] = append(pathLinks[key], NewLink(href, text))
+				pathCount[key] += 1
+				pathMax = key
+
+			} else {
+
+				// if selector is not set, we compute the selector ourselves
+
+				class := e.Attr("class")
+				// include the element class to make sure we have the same exact path for every link in the table of content
+				key = fmt.Sprintf("%s.%s", path, class)
+
+				// we count this key if the link text is not empty
+				if text != "" {
+					pathLinks[key] = append(pathLinks[key], NewLink(href, text))
+					pathCount[key] += len(text)
+
+					if pathCount[key] > pathCount[pathMax] {
+						pathMax = key
+					}
+				}
+
+			}
+		})
+		c.Visit(url.String())
+
+		links = pathLinks[pathMax]
 	}
 
-	// visit and count link classes
+	if len(links) == 0 {
-	pathLinks := map[string][]link{}
+		return []link{}, pathMax, chapter{}, fmt.Errorf("no link found for selector: %s", selector)
-	pathCount := map[string]int{}
+	}
-	pathMax := ""
 
-	c := colly.NewCollector()
+	end := len(links)
-	c.OnHTML(selector, func(e *colly.HTMLElement) {
+	if limit != -1 {
-		href := e.Attr("href")
+		end = int(math.Min(float64(limit+offset), float64(len(links))))
-		text := strings.TrimSpace(e.Text)
+	}
-		path := GetPath(e.DOM)
-		class := e.Attr("class")
-		key := fmt.Sprintf("%s.%s", path, class)
 
-		if selectorSet || text != "" {
+	links = links[offset:end]
-			pathLinks[key] = append(pathLinks[key], NewLink(href, text, class))
-			pathCount[key] += len(text)
-			// pathCount[key]++
 
-			if pathCount[key] > pathCount[pathMax] {
+	home := NewChapterFromURL(url.String(), "", []*ScrapeConfig{NewScrapeConfig()}, 0, func(index int, name string) {})
-				pathMax = key
+
-			}
+	// include home page
+	if include {
+		l := NewLink(url.String(), home.Name())
+		links = append([]link{l}, links...)
+	}
+
+	// reverse links
+	if reverse {
+		for i, j := 0, len(links)-1; i < j; i, j = i+1, j-1 {
+			links[i], links[j] = links[j], links[i]
 		}
-	})
+	}
-	c.Visit(url.String())
-	return pathLinks[pathMax]
 
-	// // visit and count link classes
+	return links, pathMax, home, nil
-	// classesLinks := map[string][]link{}
-	// classesCount := map[string]int{}
-	// classMax := ""
-
-	// c := colly.NewCollector()
-	// c.OnHTML(selector, func(e *colly.HTMLElement) {
-	// 	href := e.Attr("href")
-	// 	text := strings.TrimSpace(e.Text)
-	// 	class := e.Attr("class")
-
-	// 	if selectorSet || class != "" && text != "" {
-	// 		classesLinks[class] = append(classesLinks[class], NewLink(href, text))
-	// 		classesCount[class]++
-
-	// 		if classesCount[class] > classesCount[classMax] {
-	// 			classMax = class
-	// 		}
-	// 	}
-	// })
-	// c.Visit(url.String())
-	// return classesLinks[classMax]
 }

book/scraper_test.go

@@ -0,0 +1,233 @@
+package book
+
+import (
+	"testing"
+	"time"
+)
+
+func TestBody(t *testing.T) {
+
+	config := NewScrapeConfig()
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{config}, 0, func(index int, name string) {})
+
+	got := c.Body()
+	want := "<!doctype html>\n<html lang=\"en-us\">\n  <head>\n    <title>Books</title>\n    <link rel=\"shortcut icon\" href=\"/favicon.ico\" />\n    <meta charset=\"utf-8\" />\n    <meta name=\"generator\" content=\"Hugo 0.59.1\" />\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\" />\n    <meta name=\"author\" content=\"John Doe\" />\n    <meta name=\"description\" content=\" \" />\n    <link rel=\"stylesheet\" href=\"https://books.lapw.at/css/main.min.88e7083eff65effb7485b6e6f38d10afbec25093a6fac42d734ce9024d3defbd.css\" />\n\n    \n    <meta name=\"twitter:card\" content=\"summary\"/>\n<meta name=\"twitter:title\" content=\"Books\"/>\n<meta name=\"twitter:description\" content=\" \"/>\n\n    <meta property=\"og:title\" content=\"Books\" />\n<meta property=\"og:description\" content=\" \" />\n<meta property=\"og:type\" content=\"website\" />\n<meta property=\"og:url\" content=\"https://books.lapw.at/\" />\n\n\n\n  </head>\n  <body>\n    <header class=\"app-header\">\n      <a href=\"https://books.lapw.at/\"><img class=\"app-header-avatar\" src=\"/book.svg\" alt=\"John Doe\" /></a>\n      <h1>Books</h1>\n      <p> </p>\n      <div class=\"app-header-social\">\n        \n      </div>\n    </header>\n    <main class=\"app-container\">\n      \n  <article>\n    <h1>Books</h1>\n    <ul class=\"posts-list\">\n      \n        <li class=\"posts-list-item\">\n          <a class=\"posts-list-item-title\" href=\"https://books.lapw.at/posts/ren%C3%A9-descartes-discours-de-la-m%C3%A9thode/\">Discours de la Méthode</a>\n          <span class=\"posts-list-item-description\">\n            <svg xmlns=\"http://www.w3.org/2000/svg\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"icon icon-clock\">\n  <title>clock</title>\n  <circle cx=\"12\" cy=\"12\" r=\"10\"></circle><polyline points=\"12 6 12 12 16 14\"></polyline>\n</svg> 98 min read -\n            1637\n          </span>\n        </li>\n      \n        <li class=\"posts-list-item\">\n          <a class=\"posts-list-item-title\" href=\"https://books.lapw.at/posts/adam-wiggins-the-twelve-factor-app/\">The Twelve-Factor App</a>\n          <span class=\"posts-list-item-description\">\n            <svg xmlns=\"http://www.w3.org/2000/svg\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\" class=\"icon icon-clock\">\n  <title>clock</title>\n  <circle cx=\"12\" cy=\"12\" r=\"10\"></circle><polyline points=\"12 6 12 12 16 14\"></polyline>\n</svg> 22 min read -\n            2011\n          </span>\n        </li>\n      \n    </ul>\n    \n\n\n\n  </article>\n\n    </main>\n  </body>\n</html>\n"
+
+	if got != want {
+		t.Errorf("got %v, wanted %v", got, want)
+	}
+
+}
+
+func TestName(t *testing.T) {
+
+	config := NewScrapeConfig()
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{config}, 0, func(index int, name string) {})
+
+	got := c.Name()
+	want := "Books"
+
+	if got != want {
+		t.Errorf("got %v, wanted %v", got, want)
+	}
+
+}
+
+func TestCustomName(t *testing.T) {
+
+	config := NewScrapeConfig()
+	config.UseLinkName = true
+	c := NewChapterFromURL("https://books.lapw.at/", "Custom Name", []*ScrapeConfig{config}, 0, func(index int, name string) {})
+
+	got := c.Name()
+	want := "Custom Name"
+
+	if got != want {
+		t.Errorf("got %v, wanted %v", got, want)
+	}
+
+}
+
+func TestAuthor(t *testing.T) {
+
+	config := NewScrapeConfig()
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{config}, 0, func(index int, name string) {})
+
+	got := c.Author()
+	want := "John Doe"
+
+	if got != want {
+		t.Errorf("got %v, wanted %v", got, want)
+	}
+
+}
+
+func TestContent(t *testing.T) {
+
+	config := NewScrapeConfig()
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{config}, 0, func(index int, name string) {})
+
+	got := c.Content()
+	want := "<div id=\"readability-page-1\" class=\"page\">\n    \n    <main>\n      \n  <article>\n    \n    <ul>\n      \n        <li>\n          <a href=\"https://books.lapw.at/posts/ren%C3%A9-descartes-discours-de-la-m%C3%A9thode/\">Discours de la Méthode</a>\n          <span>\n            <svg xmlns=\"http://www.w3.org/2000/svg\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\">\n  <title>clock</title>\n  <circle cx=\"12\" cy=\"12\" r=\"10\"></circle><polyline points=\"12 6 12 12 16 14\"></polyline>\n</svg> 98 min read -\n            1637\n          </span>\n        </li>\n      \n        <li>\n          <a href=\"https://books.lapw.at/posts/adam-wiggins-the-twelve-factor-app/\">The Twelve-Factor App</a>\n          <span>\n            <svg xmlns=\"http://www.w3.org/2000/svg\" width=\"24\" height=\"24\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\">\n  <title>clock</title>\n  <circle cx=\"12\" cy=\"12\" r=\"10\"></circle><polyline points=\"12 6 12 12 16 14\"></polyline>\n</svg> 22 min read -\n            2011\n          </span>\n        </li>\n      \n    </ul>\n    \n\n\n\n  </article>\n\n    </main>\n  \n\n</div>"
+
+	if got != want {
+		t.Errorf("got %v, wanted %v", got, want)
+	}
+
+}
+
+func TestDelay(t *testing.T) {
+
+	config0 := NewScrapeConfig()
+	config0.Delay = 500
+
+	config1 := NewScrapeConfig()
+
+	start := time.Now()
+	NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{config0, config1}, 0, func(index int, name string) {})
+	elapsed := time.Since(start)
+
+	got := elapsed
+	want := time.Duration(500) * time.Millisecond
+
+	if got < want {
+		t.Errorf("got %v, wanted min %v", got, want)
+	}
+
+}
+
+func TestContentImagesOnly(t *testing.T) {
+
+	config := NewScrapeConfig()
+	config.ImagesOnly = true
+
+	c := NewChapterFromURL("https://books.lapw.at/posts/adam-wiggins-the-twelve-factor-app/", "", []*ScrapeConfig{config}, 0, func(index int, name string) {})
+
+	got := c.Content()
+	want := "<img src=\"https://books.lapw.at/images/codebase-deploys.png\" alt=\"One codebase maps to many deploys\"/><img src=\"https://books.lapw.at/images/attached-resources.png\" alt=\"A production deploy attached to four backing services.\"/><img src=\"https://books.lapw.at/images/release.png\" alt=\"Code becomes a build, which is combined with config to create a release.\"/><img src=\"https://books.lapw.at/images/process-types.png\" alt=\"Scale is expressed as running processes, workload diversity is expressed as process types.\"/>"
+
+	if got != want {
+		t.Errorf("got %v, wanted %v", got, want)
+	}
+
+}
+
+func TestSubChapters(t *testing.T) {
+
+	config0 := NewScrapeConfig()
+	config1 := NewScrapeConfig()
+
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{config0, config1}, 0, func(index int, name string) {})
+
+	got := len(c.SubChapters())
+	want := 2
+
+	if got != want {
+		t.Errorf("got %v, wanted %v", got, want)
+	}
+
+}
+
+func TestSubChaptersRSS(t *testing.T) {
+
+	config0 := NewScrapeConfig()
+	config1 := NewScrapeConfig()
+
+	c := NewChapterFromURL("https://blog.lapw.at/rss", "", []*ScrapeConfig{config0, config1}, 0, func(index int, name string) {})
+
+	got := len(c.SubChapters())
+	want := 8
+
+	if got != want {
+		t.Errorf("got %v, wanted %v", got, want)
+	}
+
+}
+
+func TestSubChaptersSelector(t *testing.T) {
+
+	config0 := NewScrapeConfig()
+	config0.Selector = "section.concrete > article > h2 > a"
+
+	config1 := NewScrapeConfig()
+
+	c := NewChapterFromURL("https://12factor.net/", "", []*ScrapeConfig{config0, config1}, 0, func(index int, name string) {})
+
+	got := len(c.SubChapters())
+	want := 12
+
+	if got != want {
+		t.Errorf("got %v, wanted %v", got, want)
+	}
+
+}
+
+func TestSubChaptersLimit(t *testing.T) {
+
+	config0 := NewScrapeConfig()
+	config0.Limit = 1
+
+	config1 := NewScrapeConfig()
+
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{config0, config1}, 0, func(index int, name string) {})
+
+	got := len(c.SubChapters())
+	want := 1
+
+	if got != want {
+		t.Errorf("got %v, wanted %v", got, want)
+	}
+
+}
+
+func TestSubChaptersLimitOver(t *testing.T) {
+
+	config0 := NewScrapeConfig()
+	config0.Limit = 3
+
+	config1 := NewScrapeConfig()
+
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{config0, config1}, 0, func(index int, name string) {})
+
+	got := len(c.SubChapters())
+	want := 2
+
+	if got != want {
+		t.Errorf("got %v, wanted %v", got, want)
+	}
+
+}
+
+func TestReverse(t *testing.T) {
+
+	config0 := NewScrapeConfig()
+	config0.Reverse = true
+
+	config1 := NewScrapeConfig()
+
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{config0, config1}, 0, func(index int, name string) {})
+
+	got := c.SubChapters()[0].Name()
+	want := "The Twelve-Factor App"
+
+	if got != want {
+		t.Errorf("got %v, wanted %v", got, want)
+	}
+
+}
+
+func TestNotInclude(t *testing.T) {
+
+	config := NewScrapeConfig()
+	config.Include = false
+
+	c := NewChapterFromURL("https://books.lapw.at/", "", []*ScrapeConfig{config}, 0, func(index int, name string) {})
+
+	got := c.Content()
+	want := ""
+
+	if got != want {
+		t.Errorf("got %v, wanted %v", got, want)
+	}
+
+}

cmd/get.go

@@ -3,25 +3,70 @@ package cmd
 import (
 	"errors"
 	"fmt"
+	"io/ioutil"
 	"log"
-	"os"
-	"os/exec"
 	"strings"
 
-	md "github.com/JohannesKaufmann/html-to-markdown"
+	"github.com/spf13/cobra"
-	epub "github.com/bmaupin/go-epub"
-	cobra "github.com/spf13/cobra"
 
 	"github.com/lapwat/papeer/book"
 )
 
-var quiet, stdout, recursive, include bool
+type GetOptions struct {
-var format, output, selector string
+	// url string
-var limit, delay int
+
+	name   string
+	author string
+	Format string
+	output string
+	stdout bool
+	images bool
+	// ImagesOnly bool
+	quiet bool
+
+	Selector []string
+	depth    int
+	limit    int
+	offset   int
+	reverse  bool
+	delay    int
+	threads  int
+	// includeUrl bool
+	include     bool
+	useLinkName bool
+}
+
+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")
+
+	// common with list command
+	getCmd.Flags().StringSliceVarP(&getOpts.Selector, "selector", "s", []string{}, "table of contents CSS selector")
+	getCmd.Flags().IntVarP(&getOpts.depth, "depth", "d", 0, "scraping depth")
+	getCmd.Flags().IntVarP(&getOpts.limit, "limit", "l", -1, "limit number of chapters, use with depth/selector")
+	getCmd.Flags().IntVarP(&getOpts.offset, "offset", "o", 0, "skip first chapters, use with depth/selector")
+	getCmd.Flags().BoolVarP(&getOpts.reverse, "reverse", "r", false, "reverse chapter order")
+	getCmd.Flags().IntVarP(&getOpts.delay, "delay", "", -1, "time in milliseconds to wait before downloading next chapter, use with depth/selector")
+	getCmd.Flags().IntVarP(&getOpts.threads, "threads", "t", -1, "download concurrency, use with depth/selector")
+	getCmd.Flags().BoolVarP(&getOpts.include, "include", "i", false, "include URL as first chapter, use with depth/selector")
+	getCmd.Flags().BoolVarP(&getOpts.useLinkName, "use-link-name", "", false, "use link name for chapter title")
+
+	rootCmd.AddCommand(getCmd)
+}
 
 var getCmd = &cobra.Command{
-	Use:   "get",
+	Use:     "get URL",
-	Short: "Scrape URL content",
+	Short:   "Scrape URL content",
+	Example: "papeer get https://www.eff.org/cyberspace-independence",
 	Args: func(cmd *cobra.Command, args []string) error {
 		if len(args) < 1 {
 			return errors.New("requires an URL argument")
@@ -32,127 +77,134 @@ var getCmd = &cobra.Command{
 			"epub": true,
 			"mobi": true,
 		}
-		if formatEnum[format] != true {
+
-			return fmt.Errorf("invalid format specified: %s", format)
+		if formatEnum[getOpts.Format] != true {
+			return fmt.Errorf("invalid format specified: %s", getOpts.Format)
 		}
 
-		if format == "epub" || format == "mobi" {
+		// add .mobi to filename if not specified
-			if stdout {
+		if getOpts.Format == "mobi" {
-				return errors.New("cannot print EPUB/MOBI file to standard output")
+			if len(getOpts.output) > 0 && strings.HasSuffix(getOpts.output, ".mobi") == false {
+				getOpts.output = fmt.Sprintf("%s.mobi", getOpts.output)
 			}
 		}
 
-		if format == "mobi" {
+		// increase depth to match limit
-			if len(output) > 0 && strings.HasSuffix(output, ".mobi") == false {
+		if cmd.Flags().Changed("limit") && getOpts.depth == 0 {
-				output = fmt.Sprintf("%s.mobi", output)
+			getOpts.depth = 1
-			}
 		}
 
-		if cmd.Flags().Changed("selector") && recursive == false {
+		// fill selector array with empty selectors to match depth
-			return errors.New("cannot use selector option if not in recursive mode")
+		getOpts.Selector = append(getOpts.Selector, "")
+		for len(getOpts.Selector) < getOpts.depth+1 {
+			getOpts.Selector = append(getOpts.Selector, "")
 		}
 
-		if cmd.Flags().Changed("include") && recursive == false {
+		if cmd.Flags().Changed("include") && getOpts.depth == 0 && len(getOpts.Selector) == 0 {
-			return errors.New("cannot use include option if not in recursive mode")
+			return errors.New("cannot use include option if depth/selector is not specified")
 		}
 
-		if cmd.Flags().Changed("limit") && recursive == false {
+		if cmd.Flags().Changed("offset") && getOpts.depth == 0 && len(getOpts.Selector) == 0 {
-			return errors.New("cannot use limit option if not in recursive mode")
+			return errors.New("cannot use offset option if depth/selector is not specified")
 		}
 
-		if cmd.Flags().Changed("delay") && recursive == false {
+		if cmd.Flags().Changed("reverse") && getOpts.depth == 0 && len(getOpts.Selector) == 0 {
-			return errors.New("cannot use delay option if not in recursive mode")
+			return errors.New("cannot use reverse option if depth/selector is not specified")
+		}
+
+		if cmd.Flags().Changed("delay") && getOpts.depth == 0 && len(getOpts.Selector) == 0 {
+			return errors.New("cannot use delay option if depth/selector is not specified")
+		}
+
+		if cmd.Flags().Changed("threads") && getOpts.depth == 0 && len(getOpts.Selector) == 0 {
+			return errors.New("cannot use threads option if depth/selector is not specified")
+		}
+
+		if cmd.Flags().Changed("use-link-name") && getOpts.depth == 0 && len(getOpts.Selector) == 0 {
+			return errors.New("cannot use use-link-name option if depth/selector is not specified")
+		}
+
+		if cmd.Flags().Changed("delay") && cmd.Flags().Changed("threads") {
+			return errors.New("cannot use delay and threads options at the same time")
 		}
 
 		return nil
 	},
 	Run: func(cmd *cobra.Command, args []string) {
 		url := args[0]
-		b := book.NewBookFromURL(url, selector, recursive, include, limit, delay)
 
-		if len(output) == 0 {
+		// generate config for each level
-			// set default output
+		configs := make([]*book.ScrapeConfig, len(getOpts.Selector))
-			output = strings.ReplaceAll(b.Name(), " ", "_")
+		for index, s := range getOpts.Selector {
-			output = strings.ReplaceAll(output, "/", "")
+			config := book.NewScrapeConfig()
-			output = fmt.Sprintf("%s.%s", output, format)
+			config.Selector = s
-		}
+			config.Quiet = getOpts.quiet
+			config.Limit = getOpts.limit
+			config.Offset = getOpts.offset
+			config.Reverse = getOpts.reverse
+			config.Delay = getOpts.delay
+			config.Threads = getOpts.threads
+			config.ImagesOnly = getOpts.images
+			config.Include = getOpts.include
+			config.UseLinkName = getOpts.useLinkName
 
-		if format == "md" {
+			// do not use link name for root level as there is not parent link
-			f, err := os.Create(output)
+			if index == 0 {
-			if err != nil {
+				config.UseLinkName = false
-				log.Fatal(err)
 			}
 
-			defer f.Close()
+			// always include last level by default
+			if index == len(getOpts.Selector)-1 {
+				config.Include = true
+			}
 
-			for _, c := range b.Chapters() {
+			configs[index] = config
-				content, err := md.NewConverter("", true, nil).ConvertString(c.Content())
+		}
+
+		c := book.NewChapterFromURL(url, "", configs, 0, func(index int, name string) {})
+
+		if getOpts.Format == "md" {
+			filename := book.ToMarkdown(c, getOpts.output)
+
+			if getOpts.stdout {
+				bytesRead, err := ioutil.ReadFile(filename)
 				if err != nil {
 					log.Fatal(err)
 				}
 
-				text := fmt.Sprintf("%s\n%s\n\n%s\n\n\n", c.Name(), strings.Repeat("=", len(c.Name())), content)
+				fmt.Println(string(bytesRead))
+			} else {
+				fmt.Printf("Markdown saved to \"%s\"\n", filename)
+			}
+		}
 
-				if stdout {
+		if getOpts.Format == "epub" {
-					fmt.Println(text)
+			filename := book.ToEpub(c, getOpts.output)
-				} else {
-
-					_, err := f.WriteString(text)
-					if err != nil {
-						log.Fatal(err)
-					}
 
+			if getOpts.stdout {
+				bytesRead, err := ioutil.ReadFile(filename)
+				if err != nil {
+					log.Fatal(err)
 				}
-			}
 
-			if stdout == false {
+				fmt.Println(string(bytesRead))
-				fmt.Printf("Markdown saved to \"%s\"\n", output)
+			} else {
+				fmt.Printf("Ebook saved to \"%s\"\n", filename)
 			}
 		}
 
-		if format == "epub" {
+		if getOpts.Format == "mobi" {
-			e := epub.NewEpub(b.Name())
+			filename := book.ToMobi(c, getOpts.output)
-			e.SetAuthor(b.Author())
 
-			for _, c := range b.Chapters() {
+			if getOpts.stdout {
-				html := fmt.Sprintf("<h1>%s</h1>%s", c.Name(), c.Content())
+				bytesRead, err := ioutil.ReadFile(filename)
-				e.AddSection(html, c.Name(), "", "")
+				if err != nil {
-			}
+					log.Fatal(err)
+				}
 
-			err := e.Write(output)
+				fmt.Println(string(bytesRead))
-			if err != nil {
+			} else {
-				log.Fatal(err)
+				fmt.Printf("Ebook saved to \"%s\"\n", filename)
-			}
-
-			fmt.Printf("Ebook saved to \"%s\"\n", output)
-		}
-
-		if format == "mobi" {
-			e := epub.NewEpub(b.Name())
-			e.SetAuthor(b.Author())
-
-			for _, chapter := range b.Chapters() {
-				e.AddSection(chapter.Content(), chapter.Name(), "", "")
-			}
-
-			outputEPUB := strings.ReplaceAll(output, ".mobi", ".epub")
-
-			err := e.Write(outputEPUB)
-			if err != nil {
-				log.Fatal(err)
-			}
-
-			exec.Command("kindlegen", outputEPUB).Run()
-			// exec command always return status 1 even if it fails
-			// if err != nil {
-			// 	log.Fatal(err)
-			// }
-
-			fmt.Printf("Ebook saved to \"%s\"\n", output)
-
-			err2 := os.Remove(outputEPUB)
-			if err2 != nil {
-				log.Fatal(err)
 			}
 		}
 	},

cmd/list.go

@@ -2,9 +2,11 @@ package cmd
 
 import (
 	"errors"
+	"fmt"
 	"log"
 	urllib "net/url"
 	"os"
+	"strings"
 
 	"github.com/jedib0t/go-pretty/v6/table"
 	cobra "github.com/spf13/cobra"
@@ -12,9 +14,45 @@ import (
 	"github.com/lapwat/papeer/book"
 )
 
+type ListOptions struct {
+	// url string
+
+	Selector []string
+	depth    int
+	limit    int
+	offset   int
+	reverse  bool
+	delay    int
+	threads  int
+	// includeUrl bool
+	include     bool
+	useLinkName bool
+}
+
+var listOpts *ListOptions
+
+func init() {
+	listOpts = &ListOptions{}
+
+	// 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().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")
+	listCmd.Flags().BoolVarP(&listOpts.include, "include", "i", false, "include URL as first chapter, use with depth/selector")
+	listCmd.Flags().BoolVarP(&listOpts.useLinkName, "use-link-name", "", false, "use link name for chapter title")
+
+	rootCmd.AddCommand(listCmd)
+}
+
 var listCmd = &cobra.Command{
-	Use:   "ls",
+	Use:     "list URL",
-	Short: "Print table of content",
+	Aliases: []string{"ls"},
+	Short:   "Print URL table of contents",
+	Example: "papeer list https://12factor.net/ -s 'section.concrete>article>h2>a'",
 	Args: func(cmd *cobra.Command, args []string) error {
 		if len(args) < 1 {
 			return errors.New("requires an URL argument")
@@ -22,16 +60,37 @@ var listCmd = &cobra.Command{
 		return nil
 	},
 	Run: func(cmd *cobra.Command, args []string) {
+		if len(listOpts.Selector) == 0 {
+			listOpts.Selector = []string{""}
+		}
+
 		base, err := urllib.Parse(args[0])
 		if err != nil {
 			log.Fatal(err)
 		}
 
-		links := book.GetLinks(base, selector)
+		links, path, home, err := book.GetLinks(base, listOpts.Selector[0], listOpts.limit, listOpts.offset, listOpts.reverse, listOpts.include)
+		if err != nil {
+			log.Fatal(err)
+		}
 
 		t := table.NewWriter()
 		t.SetOutputMirror(os.Stdout)
-		t.AppendHeader(table.Row{"#", "Name", "Url", "Class"})
+		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
+		for i, j := 0, len(pathArray)-1; i < j; i, j = i+1, j-1 {
+			pathArray[i], pathArray[j] = pathArray[j], pathArray[i]
+		}
+		pathFormatted := strings.Join(pathArray, ">")
+
+		t.AppendHeader(table.Row{"#", "Name", fmt.Sprintf("Url [%s]", pathFormatted)})
 
 		for index, link := range links {
 			u, err := base.Parse(link.Href())
@@ -39,7 +98,7 @@ var listCmd = &cobra.Command{
 				log.Fatal(err)
 			}
 
-			t.AppendRow([]interface{}{index + 1, link.Text(), u.String(), link.Class()})
+			t.AppendRow([]interface{}{index + 1, link.Text(), u.String()})
 		}
 
 		t.Render()

cmd/root.go

@@ -21,18 +21,3 @@ func Execute() {
 		os.Exit(1)
 	}
 }
-
-func init() {
-	rootCmd.PersistentFlags().StringVarP(&format, "format", "f", "md", "file format [md, epub, mobi]")
-	rootCmd.PersistentFlags().StringVarP(&output, "output", "o", "", "output file")
-	rootCmd.PersistentFlags().StringVarP(&selector, "selector", "s", "", "table of content CSS selector")
-	rootCmd.PersistentFlags().BoolVarP(&recursive, "recursive", "r", false, "create one chapter per natigation item")
-	rootCmd.PersistentFlags().BoolVarP(&include, "include", "i", false, "include URL as first chapter, in resursive mode")
-	rootCmd.PersistentFlags().BoolVarP(&quiet, "quiet", "q", false, "do not show logs")
-	rootCmd.PersistentFlags().BoolVarP(&stdout, "stdout", "", false, "print to standard output")
-	rootCmd.PersistentFlags().IntVarP(&limit, "limit", "l", -1, "limit number of chapters, in recursive mode")
-	rootCmd.PersistentFlags().IntVarP(&delay, "delay", "d", -1, "time to wait before downloading next chapter, in milliseconds")
-
-	rootCmd.AddCommand(getCmd)
-	rootCmd.AddCommand(listCmd)
-}

cmd/utils.go

@@ -1,5 +0,0 @@
-package cmd
-
-func getTableOfContent() {
-
-}

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 v0.1.1")
+		fmt.Println("papeer v0.5.5")
 	},
 }

go.mod

@@ -3,42 +3,50 @@ module github.com/lapwat/papeer
 go 1.17
 
 require (
-	github.com/JohannesKaufmann/html-to-markdown v1.3.0
+	github.com/JohannesKaufmann/html-to-markdown v1.3.5
-	github.com/bmaupin/go-epub v0.7.2
+	github.com/bmaupin/go-epub v1.0.1
-	github.com/go-shiori/go-readability v0.0.0-20210627123243-82cc33435520
+	github.com/go-shiori/go-readability v0.0.0-20220215145315-dd6828d2f09b
-	github.com/spf13/cobra v1.2.1
+	github.com/jedib0t/go-pretty/v6 v6.3.5
+	github.com/mmcdole/gofeed v1.1.3
+	github.com/spf13/cobra v1.5.0
 )
 
 require (
-	github.com/PuerkitoBio/goquery v1.7.1
+	github.com/PuerkitoBio/goquery v1.8.0
 	github.com/gocolly/colly/v2 v2.1.0
 	github.com/gosuri/uilive v0.0.4 // indirect
 	github.com/gosuri/uiprogress v0.0.1
 )
 
 require (
-	github.com/andybalholm/cascadia v1.2.0 // indirect
+	github.com/andybalholm/cascadia v1.3.1 // indirect
-	github.com/antchfx/htmlquery v1.2.3 // indirect
+	github.com/antchfx/htmlquery v1.2.5 // indirect
-	github.com/antchfx/xmlquery v1.3.6 // indirect
+	github.com/antchfx/xmlquery v1.3.11 // indirect
-	github.com/antchfx/xpath v1.2.0 // 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
 	github.com/gobwas/glob v0.2.3 // indirect
-	github.com/gofrs/uuid v4.0.0+incompatible // indirect
+	github.com/gofrs/uuid v4.2.0+incompatible // indirect
-	github.com/gogs/chardet v0.0.0-20191104214054-4b6791f73a28 // indirect
+	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/jedib0t/go-pretty/v6 v6.2.4 // 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
-	github.com/mattn/go-runewidth v0.0.9 // indirect
+	github.com/mattn/go-runewidth v0.0.13 // indirect
+	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/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca // indirect
-	github.com/sirupsen/logrus v1.8.1 // 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
-	golang.org/x/net v0.0.0-20210614182718-04defd469f4e // indirect
+	github.com/vincent-petithory/dataurl v1.0.0 // indirect
-	golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c // indirect
+	golang.org/x/net v0.0.0-20220726230323-06994584191e // indirect
-	golang.org/x/text v0.3.6 // indirect
+	golang.org/x/sys v0.0.0-20220727055044-e65921a090b8 // indirect
+	golang.org/x/text v0.3.7 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/protobuf v1.27.1 // indirect
+	google.golang.org/protobuf v1.28.0 // indirect
 )

go.sum

@@ -1,120 +1,75 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
-cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
-cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
-cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
-cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
-cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
-cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
-cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
-cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
-cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk=
-cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
-cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
-cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
-cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI=
-cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmWk=
-cloud.google.com/go v0.78.0/go.mod h1:QjdrLG0uq+YwhjoVOLsS1t7TW8fs36kLs4XO5R5ECHg=
-cloud.google.com/go v0.79.0/go.mod h1:3bzgcEeQlzbuEAYu4mrWhKqWjmpprinYgKJLgKHnbb8=
-cloud.google.com/go v0.81.0/go.mod h1:mk/AM35KwGk/Nm2YSeZbxXdrNK3KZOYHmLkOqC2V6E0=
-cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
-cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
-cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
-cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
-cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
-cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
-cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
-cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
-cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
-cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
-cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
-cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
-cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
-cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
-cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
-cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
-cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
-cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
-dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
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-github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
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 github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
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-google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
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-google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
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@@ -706,36 +343,25 @@ google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
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-google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
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release.sh

@@ -1,21 +0,0 @@
-#!/usr/bin/env bash
-
-version=$1
-platforms=("linux/amd64" "darwin/amd64" "windows/amd64")
-
-for platform in "${platforms[@]}"
-do
-    platform_split=(${platform//\// })
-    GOOS=${platform_split[0]}
-    GOARCH=${platform_split[1]}
-    output_name='papeer-'$version'-'$GOOS'-'$GOARCH
-    if [ $GOOS = "windows" ]; then
-        output_name+='.exe'
-    fi
-
-    env GOOS=$GOOS GOARCH=$GOARCH go build -o $output_name
-    if [ $? -ne 0 ]; then
-        echo 'An error has occurred! Aborting the script execution...'
-        exit 1
-    fi
-done