re-orgainzied code a little, using go templates instead format string

README.md

@@ -67,6 +67,27 @@ The `XXXXX` part is your userid.
 Put it into the configfile as outlined above. Also specify an output
 directory. Then just execute `kleingebaeck`.
 
+Inside the output directory you'll find a new subdirectory for each
+ad. Every directory contains a file `Adlisting.txt`, which will look
+somewhat like this:
+
+```default
+Title: A book I sell
+Price: 99 € VB
+Id: 1919191919
+Category: Sachbücher
+Condition: Sehr Gut
+Created: 10.12.2023
+
+This is the description text.
+
+Pay with paypal.
+```
+
+You can change the formatting using the `template` config
+variable. The supplied sample config contains the default template.
+
+All images will be stored in the same directory.
 
 ## Kleingebäck?
 

config.go

@@ -22,6 +22,17 @@ import (
 	"github.com/hashicorp/hcl/v2/hclsimple"
 )
 
+const (
+	VERSION         string = "0.0.4"
+	Baseuri         string = "https://www.kleinanzeigen.de"
+	Listuri         string = "/s-bestandsliste.html"
+	Defaultdir      string = "."
+	DefaultTemplate string = "Title: {{.Title}}\nPrice: {{.Price}}\nId: {{.Id}}\n" +
+		"Category: {{.Category}}\nCondition: {{.Condition}}\nCreated: {{.Created}}\n\n{{.Text}}\n"
+	Useragent string = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) " +
+		"AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"
+)
+
 type Config struct {
 	Verbose  bool   `hcl:"verbose"`
 	User     int    `hcl:"user"`

example.hcl

@@ -15,6 +15,5 @@ verbose = true
 outdir = "test"
 
 # template. leave empty to use the default one, which is:
-# Title: %s\nPrice: %s\nId: %s\nCategory: %s\nCondition: %s\nCreated: %s\nBody:\n\n%s\n
-# take care to include exactly 7 times '%s'!
+# "Title: {{.Title}}\nPrice: {{.Price}}\nId: {{.Id}}\nCategory: {{.Category}}\nCondition: {{.Condition}}\nCreated: {{.Created}}\n\n{{.Text}}\n"
 template = ""

kleingebaeck.1

@@ -133,7 +133,7 @@
 .\" ========================================================================
 .\"
 .IX Title "KLEINGEBAECK 1"
-.TH KLEINGEBAECK 1 "2023-12-16" "1" "User Commands"
+.TH KLEINGEBAECK 1 "2023-12-17" "1" "User Commands"
 .\" For nroff, turn off justification.  Always turn off hyphenation; it makes
 .\" way too many mistakes in technical documents.
 .if n .ad l
@@ -179,10 +179,11 @@ Format is simple:
 Be carefull if you want to change the template. The default one looks like this:
 .PP
 .Vb 1
-\&   Title: %s\enPrice: %s\enId: %s\enCategory: %s\enCondition: %s\enCreated: %s\enBody:\en\en%s\en
+\&   Title: {{.Title}}\enPrice: {{.Price}}\enId: {{.Id}}\enCategory: {{.Category}}\enCondition: {{.Condition}}\enCreated: {{.Created}}\en\en{{.Text}}\en
 .Ve
 .PP
-If you change it, include 7 times the '%s' format tag.
+You can left out certain fields and use any formatting you like. Refer
+to <https://pkg.go.dev/text/template> for details how to write a template.
 .SH "SETUP"
 .IX Header "SETUP"
 To setup the tool, you need to lookup your userid on

kleingebaeck.go

@@ -39,9 +39,11 @@ CONFIGURATION
     Be carefull if you want to change the template. The default one looks
     like this:
 
-       Title: %s\nPrice: %s\nId: %s\nCategory: %s\nCondition: %s\nCreated: %s\nBody:\n\n%s\n
+       Title: {{.Title}}\nPrice: {{.Price}}\nId: {{.Id}}\nCategory: {{.Category}}\nCondition: {{.Condition}}\nCreated: {{.Created}}\n\n{{.Text}}\n
 
-    If you change it, include 7 times the '%s' format tag.
+    You can left out certain fields and use any formatting you like. Refer
+    to <https://pkg.go.dev/text/template> for details how to write a
+    template.
 
 SETUP
     To setup the tool, you need to lookup your userid on kleinanzeigen.de.

kleingebaeck.pod

@@ -38,9 +38,10 @@ Format is simple:
 
 Be carefull if you want to change the template. The default one looks like this:
 
-   Title: %s\nPrice: %s\nId: %s\nCategory: %s\nCondition: %s\nCreated: %s\nBody:\n\n%s\n
+   Title: {{.Title}}\nPrice: {{.Price}}\nId: {{.Id}}\nCategory: {{.Category}}\nCondition: {{.Condition}}\nCreated: {{.Created}}\n\n{{.Text}}\n
 
-If you change it, include 7 times the '%s' format tag.
+You can left out certain fields and use any formatting you like. Refer
+to L<https://pkg.go.dev/text/template> for details how to write a template.
 
 =head1 SETUP
 

main.go

@@ -28,14 +28,6 @@ import (
 	flag "github.com/spf13/pflag"
 )
 
-const VERSION string = "0.0.3"
-const Useragent string = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) " +
-	"AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"
-const Baseuri string = "https://www.kleinanzeigen.de"
-const Listuri string = "/s-bestandsliste.html"
-const Defaultdir string = "."
-const DefaultTemplate string = "Title: %s\nPrice: %s\nId: %s\nCategory: %s\nCondition: %s\nCreated: %s\nBody:\n\n%s\n"
-
 const Usage string = `This is kleingebaeck, the kleinanzeigen.de backup tool.
 Usage: kleingebaeck [-dvVhmoc] [<ad-listing-url>,...]
 Options:

scrape.go

@@ -23,7 +23,6 @@ import (
 	"io"
 	"log/slog"
 	"net/http"
-	"os"
 	"strings"
 	"sync"
 
@@ -160,28 +159,12 @@ func Scrape(uri string, dir string, template string) error {
 	}
 	slog.Debug("extracted ad listing", "ad", ad)
 
-	// prepare output dir
-	dir = dir + "/" + ad.Slug
-	err = Mkdir(dir)
+	// write listing
+	err = WriteAd(dir, ad, template)
 	if err != nil {
 		return err
 	}
 
-	// write ad file
-	listingfile := strings.Join([]string{dir, "Adlisting.txt"}, "/")
-	f, err := os.Create(listingfile)
-	if err != nil {
-		return err
-	}
-
-	ad.Text = strings.ReplaceAll(ad.Text, "<br/>", "\n")
-	_, err = fmt.Fprintf(f, template,
-		ad.Title, ad.Price, ad.Id, ad.Category, ad.Condition, ad.Created, ad.Text)
-	if err != nil {
-		return err
-	}
-	slog.Info("wrote ad listing", "listingfile", listingfile)
-
 	return ScrapeImages(dir, ad)
 }
 
@@ -230,13 +213,7 @@ func Getimage(uri, fileName string) error {
 		return errors.New("received non 200 response code")
 	}
 
-	file, err := os.Create(fileName)
-	if err != nil {
-		return err
-	}
-	defer file.Close()
-
-	_, err = io.Copy(file, response.Body)
+	err = WriteImage(fileName, response.Body)
 	if err != nil {
 		return err
 	}

store.go

@@ -0,0 +1,72 @@
+/*
+Copyright © 2023 Thomas von Dein
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package main
+
+import (
+	"io"
+	"log/slog"
+	"os"
+	"strings"
+	tpl "text/template"
+)
+
+func WriteAd(dir string, ad *Ad, template string) error {
+	// prepare output dir
+	dir = dir + "/" + ad.Slug
+	err := Mkdir(dir)
+	if err != nil {
+		return err
+	}
+
+	// write ad file
+	listingfile := strings.Join([]string{dir, "Adlisting.txt"}, "/")
+	f, err := os.Create(listingfile)
+	if err != nil {
+		return err
+	}
+
+	ad.Text = strings.ReplaceAll(ad.Text, "<br/>", "\n")
+
+	tmpl, err := tpl.New("adlisting").Parse(template)
+	if err != nil {
+		return err
+	}
+	err = tmpl.Execute(f, ad)
+	if err != nil {
+		return err
+	}
+
+	slog.Info("wrote ad listing", "listingfile", listingfile)
+
+	return nil
+}
+
+func WriteImage(filename string, reader io.ReadCloser) error {
+	file, err := os.Create(filename)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	_, err = io.Copy(file, reader)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}