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add test suites, scrape config

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This commit is contained in:
lapwat
2021-12-22 22:28:19 +01:00
parent 0009435769
commit ff3d09c727
9 changed files with 421 additions and 45 deletions
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1
Makefile
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@@ -8,3 +8,4 @@ clean:
find . -maxdepth 1 -not -name 'README.md' -name '*.md' -delete find . -maxdepth 1 -not -name 'README.md' -name '*.md' -delete
find . -maxdepth 1 -name '*.epub' -delete find . -maxdepth 1 -name '*.epub' -delete
find . -maxdepth 1 -name '*.mobi' -delete find . -maxdepth 1 -name '*.mobi' -delete
find . -maxdepth 1 -name 'papeer-v*' -delete

44
README.md
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@@ -59,13 +59,20 @@ The `recursive` option lets you extract the table of content of a website, then
Before trying the `recursive` option, it is a good idea to use the `ls` option, which lets you vizualize the content that will be retrieved. You can use several options to customize the table of content extraction, such as `selector`, `limit`, `offset` and `include`. Type `papeer help` for more information about those options. Before trying the `recursive` option, it is a good idea to use the `ls` option, which lets you vizualize the content that will be retrieved. You can use several options to customize the table of content extraction, such as `selector`, `limit`, `offset` and `include`. Type `papeer help` for more information about those options.
```sh ```sh
papeer ls https://news.ycombinator.com/ --limit=5 papeer ls https://12factor.net/ -s 'section.concrete > article > h2 > a'
# # NAME URL # # NAME URL
# 1 Tailwind CSS v3.0 https://tailwindcss.com/blog/tailwindcss-v3 # 1 I. Codebase https://12factor.net/codebase
# 2 A molten salt storage solution using sodium hydroxide https://sifted.eu/articles/salt-energy-storage-seaborg-hyme/ # 2 II. Dependencies https://12factor.net/dependencies
# 3 HashiCorp IPO today https://www.hashicorp.com/blog/a-new-chapter-for-hashicorp # 3 III. Config https://12factor.net/config
# 4 Stack Graphs https://github.blog/2021-12-09-introducing-stack-graphs/ # 4 IV. Backing services https://12factor.net/backing-services
# 5 ‘Tipping point’ makes partisan polarization irreversible https://news.cornell.edu/stories/2021/12/tipping-point-makes-partisan-polarization-irreversible # 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 ### Scrape time
@@ -73,14 +80,21 @@ papeer ls https://news.ycombinator.com/ --limit=5
Once you are satisfied with the table of content 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. In recursive mode, you also have the possibility to use `delay` and `threads` options. Once you are satisfied with the table of content 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. In recursive mode, you also have the possibility to use `delay` and `threads` options.
```sh ```sh
papeer get https://news.ycombinator.com/ --recursive --delay=500 --limit=5 --format=md papeer get https://12factor.net/ --recursive -s 'section.concrete > article > h2 > a' --format=md
# [========================================>---------------------------] Chapters 3 / 5 # [======================================>-----------------------------] Chapters 7 / 12
# [====================================================================] 1. Tailwind CSS v3.0 # [====================================================================] 1. I. Codebase
# [====================================================================] 2. A molten salt storage solution using sodium hydroxide # [====================================================================] 2. II. Dependencies
# [====================================================================] 3. HashiCorp IPO today # [====================================================================] 3. III. Config
# [--------------------------------------------------------------------] 4. Stack Graphs # [====================================================================] 4. IV. Backing services
# [--------------------------------------------------------------------] 5. ‘Tipping point’ makes partisan polarization irreversible # [====================================================================] 5. V. Build, release, run
# Markdown saved to "Hacker News.md" # [====================================================================] 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 # Installation

21
book/chapter.go
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@@ -1,13 +1,20 @@
package book package book
type chapter struct { 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 { func (c chapter) Name() string {
@@ -21,3 +28,7 @@ func (c chapter) Author() string {
func (c chapter) Content() string { func (c chapter) Content() string {
return c.content return c.content
} }
func (c chapter) SubChapters() []chapter {
return c.subChapters
}

90
book/format.go Normal file
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@@ -0,0 +1,90 @@
package book
import (
"fmt"
"log"
"strings"
md "github.com/JohannesKaufmann/html-to-markdown"
"github.com/PuerkitoBio/goquery"
epub "github.com/bmaupin/go-epub"
)
func ToMarkdown(c chapter) string {
// make title
underline := strings.Repeat("=", len(c.Name()))
title := fmt.Sprintf("%s\n%s", c.Name(), underline)
// convert content to markdown
content, err := md.NewConverter("", true, nil).ConvertString(c.Content())
if err != nil {
log.Fatal(err)
}
// merge title and content
content = fmt.Sprintf("%s\n\n%s", title, content)
for _, sc := range c.SubChapters() {
// merge subchapters
content = fmt.Sprintf("%s\n\n\n%s", content, ToMarkdown(sc))
}
return content
}
func ToEpub(c chapter, filename string) {
if len(filename) == 0 {
filename = fmt.Sprintf("%s.epub", c.Name())
}
// init ebook
e := epub.NewEpub(c.Name())
e.SetAuthor(c.Author())
AppendToEpub(e, c, false)
err := e.Write(filename)
if err != nil {
log.Fatal(err)
}
fmt.Printf("Ebook saved to \"%s\"\n", filename)
}
func AppendToEpub(e *epub.Epub, c chapter, imagesOnly bool) {
content := ""
if 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")
imagePath, _ := e.AddImage(src, "")
if imagesOnly {
imageTag, _ := goquery.OuterHtml(s)
content += strings.Replace(imageTag, src, imagePath, 1)
} else {
content = strings.Replace(content, src, imagePath, 1)
}
})
html := fmt.Sprintf("<h1>%s</h1>%s", c.Name(), content)
_, err = e.AddSection(html, c.Name(), "", "")
if err != nil {
log.Fatal(err)
}
for _, sc := range c.SubChapters() {
AppendToEpub(e, sc, false)
}
}

49
book/format_test.go Normal file
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@@ -0,0 +1,49 @@
package book
import (
"errors"
"os"
"testing"
)
func TestToMarkdown(t *testing.T) {
c := NewChapterFromURL("https://books.lapw.at/", []*ScrapeConfig{NewScrapeConfig()})
got := ToMarkdown(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"
if got != want {
t.Errorf("got %q, wanted %q", got, want)
}
}
func TestToEpub(t *testing.T) {
filename := "ebook.epub"
c := NewChapterFromURL("https://books.lapw.at/", []*ScrapeConfig{NewScrapeConfig()})
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 TestToEpubNoFilename(t *testing.T) {
filename := "Books.epub"
c := NewChapterFromURL("https://books.lapw.at/", []*ScrapeConfig{NewScrapeConfig()})
ToEpub(c, "")
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)
}
}
}

120
book/scraper.go
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@@ -1,9 +1,12 @@
package book package book
import ( import (
"bytes"
"fmt" "fmt"
"io"
"log" "log"
"math" "math"
"net/http"
urllib "net/url" urllib "net/url"
"strings" "strings"
"sync" "sync"
@@ -14,14 +17,33 @@ import (
colly "github.com/gocolly/colly/v2" colly "github.com/gocolly/colly/v2"
) )
func NewBookFromURL(url, selector, name, author string, recursive, include bool, limit, offset, delay, threads int) book { type ScrapeConfig struct {
selector string
limit int
include bool
imagesOnly bool
}
func NewScrapeConfig() *ScrapeConfig {
return &ScrapeConfig{"", -1, true, false}
}
func NewBookFromURL(url, selector, name, author string, recursive, include, imagesOnly bool, limit, offset, delay, threads int) book {
config1 := NewScrapeConfig()
config1.imagesOnly = imagesOnly
var chapters []chapter var chapters []chapter
var home chapter var home chapter
if recursive { if recursive {
chapters, home = tableOfContent(url, selector, limit, offset, delay, threads, include) config2 := NewScrapeConfig()
config2.selector = selector
config2.limit = limit
config2.include = include
config2.imagesOnly = imagesOnly
chapters, home = tableOfContent(url, config1.selector, config1.limit, offset, delay, threads, config1.include)
} else { } else {
chapters = []chapter{NewChapterFromURL(url)} chapters = []chapter{NewChapterFromURL(url, []*ScrapeConfig{config1})}
home = chapters[0] home = chapters[0]
} }
@@ -41,30 +63,82 @@ func NewBookFromURL(url, selector, name, author string, recursive, include bool,
return b return b
} }
func NewChapterFromURL(url string) chapter { func NewChapterFromURL(url string, configs []*ScrapeConfig) chapter {
article, err := readability.FromURL(url, 30*time.Second) config := configs[0]
content := ""
base, err := urllib.Parse(url)
if err != nil {
log.Fatal(err)
}
subchapters := []chapter{}
if len(configs) > 1 {
// add subchapters
links, _, err := GetLinks(base, config.selector, config.limit, 0, false)
if err != nil {
log.Fatal(err)
}
for _, link := range links {
// and then use it to parse relative URLs
u, err := base.Parse(link.href)
if err != nil {
log.Fatal(err)
}
subchapters = append(subchapters, NewChapterFromURL(u.String(), configs[1:]))
}
}
// we want the metadata anyway
// get page body
response, err := http.Get(url)
if err != nil {
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 content
article, err := readability.FromReader(readabilityReader, base)
if err != nil { if err != nil {
log.Fatalf("failed to parse %s, %v\n", url, err) log.Fatalf("failed to parse %s, %v\n", url, err)
} }
content := strings.ReplaceAll(article.Content, "\n", "") // we don't care about the content if we do not include this level
// if images { if config.include {
// // parse html content content = article.Content
// doc, err := goquery.NewDocumentFromReader(strings.NewReader(content))
// if err != nil {
// log.Fatal(err)
// }
// // extract images only // extract images
// content = "" if config.imagesOnly {
// doc.Find("img").Each(func(i int, s *goquery.Selection) {
// newContent, _ := goquery.OuterHtml(s)
// content += newContent
// })
// }
return chapter{article.Title, article.Byline, content} // 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)
content += imageTag
})
}
}
return chapter{string(body), article.Title, article.Byline, content, subchapters, config}
} }
func tableOfContent(url, selector string, limit, offset, delay, threads int, include bool) ([]chapter, chapter) { func tableOfContent(url, selector string, limit, offset, delay, threads int, include bool) ([]chapter, chapter) {
@@ -91,7 +165,7 @@ func tableOfContent(url, selector string, limit, offset, delay, threads int, inc
log.Fatal(err) log.Fatal(err)
} }
chapters[index] = NewChapterFromURL(u.String()) chapters[index] = NewChapterFromURL(u.String(), []*ScrapeConfig{NewScrapeConfig()})
progress.Incr(index) progress.Incr(index)
// short sleep for last chapter to let the progress bar update // short sleep for last chapter to let the progress bar update
@@ -125,7 +199,7 @@ func tableOfContent(url, selector string, limit, offset, delay, threads int, inc
log.Fatal(err) log.Fatal(err)
} }
chapters[index] = NewChapterFromURL(u.String()) chapters[index] = NewChapterFromURL(u.String(), []*ScrapeConfig{NewScrapeConfig()})
progress.Incr(index) progress.Incr(index)
<-semaphore <-semaphore
@@ -202,7 +276,7 @@ func GetLinks(url *urllib.URL, selector string, limit, offset int, include bool)
links = links[offset:end] links = links[offset:end]
home := NewChapterFromURL(url.String()) home := NewChapterFromURL(url.String(), []*ScrapeConfig{NewScrapeConfig()})
if include { if include {
l := NewLink(url.String(), home.Name()) l := NewLink(url.String(), home.Name())

131
book/scraper_test.go Normal file
View File

@@ -0,0 +1,131 @@
package book
import "testing"
func TestBody(t *testing.T) {
c := NewChapterFromURL("https://books.lapw.at/", []*ScrapeConfig{NewScrapeConfig()})
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) {
c := NewChapterFromURL("https://books.lapw.at/", []*ScrapeConfig{NewScrapeConfig()})
got := c.Name()
want := "Books"
if got != want {
t.Errorf("got %v, wanted %v", got, want)
}
}
func TestAuthor(t *testing.T) {
c := NewChapterFromURL("https://books.lapw.at/", []*ScrapeConfig{NewScrapeConfig()})
got := c.Author()
want := "John Doe"
if got != want {
t.Errorf("got %v, wanted %v", got, want)
}
}
func TestContent(t *testing.T) {
c := NewChapterFromURL("https://books.lapw.at/", []*ScrapeConfig{NewScrapeConfig()})
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 TestContentImagesOnly(t *testing.T) {
config := NewScrapeConfig()
config.imagesOnly = true
c := NewChapterFromURL("https://books.lapw.at/posts/adam-wiggins-the-twelve-factor-app/", []*ScrapeConfig{config})
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) {
c := NewChapterFromURL("https://books.lapw.at/", []*ScrapeConfig{NewScrapeConfig(), NewScrapeConfig()})
got := len(c.SubChapters())
want := 2
if got != want {
t.Errorf("got %v, wanted %v", got, want)
}
}
func TestSubChaptersSelector(t *testing.T) {
c := NewChapterFromURL("https://12factor.net/", []*ScrapeConfig{{"section.concrete > article > h2 > a", -1, true, false}, NewScrapeConfig()})
got := len(c.SubChapters())
want := 12
if got != want {
t.Errorf("got %v, wanted %v", got, want)
}
}
func TestSubChaptersLimit(t *testing.T) {
config := NewScrapeConfig()
config.limit = 1
c := NewChapterFromURL("https://books.lapw.at/", []*ScrapeConfig{config, NewScrapeConfig()})
got := len(c.SubChapters())
want := 1
if got != want {
t.Errorf("got %v, wanted %v", got, want)
}
}
func TestSubChaptersLimitOver(t *testing.T) {
config := NewScrapeConfig()
config.limit = 3
c := NewChapterFromURL("https://books.lapw.at/", []*ScrapeConfig{config, NewScrapeConfig()})
got := len(c.SubChapters())
want := 2
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})
got := c.Content()
want := ""
if got != want {
t.Errorf("got %v, wanted %v", got, want)
}
}

2
cmd/get.go
View File

@@ -77,7 +77,7 @@ var getCmd = &cobra.Command{
}, },
Run: func(cmd *cobra.Command, args []string) { Run: func(cmd *cobra.Command, args []string) {
url := args[0] url := args[0]
b := book.NewBookFromURL(url, selector, name, author, recursive, include, limit, offset, delay, threads) b := book.NewBookFromURL(url, selector, name, author, recursive, include, images, limit, offset, delay, threads)
if len(output) == 0 { if len(output) == 0 {
// set default output // set default output

8
release.sh
View File

@@ -3,12 +3,18 @@
version=$1 version=$1
platforms=("linux/amd64" "darwin/amd64" "windows/amd64") platforms=("linux/amd64" "darwin/amd64" "windows/amd64")
if [ "$#" -ne 1 ]; then
echo "Illegal number of parameters"
echo "Usage: ./release.sh X.X.X"
exit 1
fi
for platform in "${platforms[@]}" for platform in "${platforms[@]}"
do do
platform_split=(${platform//\// }) platform_split=(${platform//\// })
GOOS=${platform_split[0]} GOOS=${platform_split[0]}
GOARCH=${platform_split[1]} GOARCH=${platform_split[1]}
output_name='papeer-'$version'-'$GOOS'-'$GOARCH output_name='papeer-v'$version'-'$GOOS'-'$GOARCH
if [ $GOOS = "windows" ]; then if [ $GOOS = "windows" ]; then
output_name+='.exe' output_name+='.exe'
fi fi