initial commit

4 years ago · 579886d6a4
4 changed files with 267 additions and 0 deletions
--- a/cli/main.go
+++ b/cli/main.go
@ -0,0 +1,20 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/nmasse-itix/evdb/ficheauto"
+)
+
+func main() {
+	scrapper := ficheauto.NewScrapper("https://www.fiches-auto.fr")
+	cars := scrapper.Scrape()
+	for _, car := range cars {
+		fmt.Println(car)
+	}
+	// scrapper := ademe.NewScrapper("https://carlabelling.ademe.fr")
+	// cars := scrapper.Scrape()
+	// for _, car := range cars {
+	// 	fmt.Println(car)
+	// }
+}
--- a/ficheauto/ficheauto.go
+++ b/ficheauto/ficheauto.go
@ -0,0 +1,174 @@
+package ficheauto
+
+import (
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"github.com/gocolly/colly"
+)
+
+type Car struct {
+	Brand            string  // Brand name
+	Model            string  // Model + Variant
+	Weight           int     // Weight (kg)
+	Layout           string  // Motor on front, rear wheels or both
+	Power            int     // Power (ch)
+	Acceleration     float32 // From 0 to 100km/h (s)
+	MaxSpeed         int     // Max speed (km/h)
+	TrunkSpace       int     // Available space in the trunk (dm3)
+	BatteryCapacity  float32 // Battery capacity (kWh)
+	MaxChargingPower int     // Maximum charging power (kW)
+	RetailPrice      int     // Retail price (k€)
+}
+
+func (car Car) String() string {
+	return fmt.Sprintf("%s %s (%d ch, %.1f kWh)", car.Brand, car.Model, car.Power, car.BatteryCapacity)
+}
+
+type Scrapper struct {
+	url string
+	c   *colly.Collector
+}
+
+func NewScrapper(baseUrl string) *Scrapper {
+	scrapper := Scrapper{
+		url: fmt.Sprintf("%s/articles-auto/electrique/s-852-comparatif-des-voitures-electriques.php", baseUrl),
+		c:   colly.NewCollector(),
+	}
+	return &scrapper
+}
+
+func (s *Scrapper) Scrape() []Car {
+	var cars []Car
+
+	s.c.OnHTML("table", func(table *colly.HTMLElement) {
+		if table.Attr("bordercolor") != "#C0C0C0" {
+			return
+		}
+		table.ForEach("tbody", func(_ int, tbody *colly.HTMLElement) {
+			var cols []string = []string{}
+			tbody.ForEach("tr", func(i int, tr *colly.HTMLElement) {
+				var vals []string = []string{}
+				tr.ForEach("td", func(j int, td *colly.HTMLElement) {
+					val := strings.TrimSpace(td.Text)
+					//fmt.Println(val)
+					if i == 0 {
+						cols = append(cols, val)
+					} else {
+						vals = append(vals, val)
+					}
+				})
+				if i > 0 {
+					data, err := slice2map(cols, vals)
+					if err != nil {
+						fmt.Println(err)
+						return
+					}
+					car, err := map2car(data)
+					if err != nil {
+						fmt.Println(err)
+						return
+					}
+					cars = append(cars, car)
+				}
+			})
+		})
+	})
+
+	s.c.Visit(s.url)
+
+	return cars
+}
+
+var nameRegexp, miscRegexp *regexp.Regexp
+
+func init() {
+	nameRegexp = regexp.MustCompile(`^([A-Za-z0-9]+) +(.*) +\(([0-9]+) ?kg\)`)
+	miscRegexp = regexp.MustCompile(`^([.0-9]+)`)
+}
+
+func getInt(s string) (int, error) {
+	matches := miscRegexp.FindStringSubmatch(s)
+	if len(matches) != 2 {
+		return 0, fmt.Errorf("wrong number of matches: '%s'", s)
+	}
+	i, err := strconv.ParseInt(matches[1], 10, 32)
+	if err != nil {
+		return 0, err
+	}
+	return int(i), nil
+}
+
+func getFloat(s string) (float32, error) {
+	matches := miscRegexp.FindStringSubmatch(s)
+	if len(matches) != 2 {
+		return 0, fmt.Errorf("wrong number of matches: '%s'", s)
+	}
+	f, err := strconv.ParseFloat(matches[1], 32)
+	if err != nil {
+		return 0, err
+	}
+	return float32(f), nil
+}
+
+func map2car(data map[string]string) (Car, error) {
+	var car Car
+	matches := nameRegexp.FindStringSubmatch(data["Modèles"])
+	if len(matches) != 4 {
+		return Car{}, fmt.Errorf("wrong number of matches: '%s'", data["Modèles"])
+	}
+	car.Brand = strings.TrimSpace(matches[1])
+	car.Model = strings.TrimSpace(matches[2])
+	w, err := strconv.ParseInt(matches[3], 10, 32)
+	if err != nil {
+		return Car{}, err
+	}
+	car.Weight = int(w)
+	car.Layout = data["Motr."]
+	car.Acceleration, err = getFloat(data["0/100sec."])
+	if err != nil {
+		fmt.Println(err)
+	}
+	car.BatteryCapacity, err = getFloat(data["Bat.kWh"])
+	if err != nil {
+		fmt.Println(err)
+	}
+	car.MaxChargingPower, err = getInt(data["Puiss.ChargeMAX"])
+	if err != nil {
+		fmt.Println(err)
+	}
+	car.MaxSpeed, err = getInt(data["Vmaxkm/h"])
+	if err != nil {
+		fmt.Println(err)
+	}
+	car.Power, err = getInt(data["Puiss.ch"])
+	if err != nil {
+		fmt.Println(err)
+	}
+	car.RetailPrice, err = getInt(data["Prix"])
+	if err != nil {
+		fmt.Println(err)
+	}
+	car.TrunkSpace, err = getInt(data["CoffreLitres"])
+	if err != nil {
+		fmt.Println(err)
+	}
+	//fmt.Println(data)
+
+	return car, nil
+}
+
+func slice2map(cols, vals []string) (map[string]string, error) {
+	if len(cols) != len(vals) {
+		return nil, fmt.Errorf("length mismatch")
+	}
+
+	var ret map[string]string = make(map[string]string, len(cols))
+	for i := range cols {
+		ret[cols[i]] = vals[i]
+	}
+
+	return ret, nil
+}
--- a/go.mod
+++ b/go.mod
@ -0,0 +1,16 @@
+module github.com/nmasse-itix/evdb
+
+go 1.16
+
+require (
+	github.com/PuerkitoBio/goquery v1.8.0 // indirect
+	github.com/antchfx/htmlquery v1.2.4 // indirect
+	github.com/antchfx/xmlquery v1.3.9 // indirect
+	github.com/gobwas/glob v0.2.3 // indirect
+	github.com/gocolly/colly v1.2.0
+	github.com/kennygrant/sanitize v1.2.4 // indirect
+	github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca // indirect
+	github.com/temoto/robotstxt v1.1.2 // indirect
+	golang.org/x/net v0.0.0-20220225172249-27dd8689420f // indirect
+	google.golang.org/appengine v1.6.7 // indirect
+)
--- a/go.sum
+++ b/go.sum
@ -0,0 +1,57 @@
+github.com/PuerkitoBio/goquery v1.8.0 h1:PJTF7AmFCFKk1N6V6jmKfrNH9tV5pNE6lZMkG0gta/U=
+github.com/PuerkitoBio/goquery v1.8.0/go.mod h1:ypIiRMtY7COPGk+I/YbZLbxsxn9g5ejnI2HSMtkjZvI=
+github.com/andybalholm/cascadia v1.3.1 h1:nhxRkql1kdYCc8Snf7D5/D3spOX+dBgjA6u8x004T2c=
+github.com/andybalholm/cascadia v1.3.1/go.mod h1:R4bJ1UQfqADjvDa4P6HZHLh/3OxWWEqc0Sk8XGwHqvA=
+github.com/antchfx/htmlquery v1.2.4 h1:qLteofCMe/KGovBI6SQgmou2QNyedFUW+pE+BpeZ494=
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+github.com/antchfx/xmlquery v1.3.9 h1:Y+zyMdiUZ4fasTQTkDb3DflOXP7+obcYEh80SISBmnQ=
+github.com/antchfx/xmlquery v1.3.9/go.mod h1:wojC/BxjEkjJt6dPiAqUzoXO5nIMWtxHS8PD8TmN4ks=
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