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package main
import (
"flag"
"log"
"net/http"
"strings"
"github.com/ajstarks/svgo"
)
const defaultstyle = "fill:rgb(127,0,0)"
var port = flag.String("port", ":2003", "http service address")
func main() {
flag.Parse()
http.Handle("/circle/", http.HandlerFunc(circle))
http.Handle("/rect/", http.HandlerFunc(rect))
http.Handle("/arc/", http.HandlerFunc(arc))
http.Handle("/text/", http.HandlerFunc(text))
err := http.ListenAndServe(*port, nil)
if err != nil {
log.Println("ListenAndServe:", err)
}
}
func shapestyle(path string) string {
i := strings.LastIndex(path, "/") + 1
if i > 0 && len(path[i:]) > 0 {
return "fill:" + path[i:]
}
return defaultstyle
}
func circle(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Content-Type", "image/svg+xml")
s := svg.New(w)
s.Start(500, 500)
s.Title("Circle")
s.Circle(250, 250, 125, shapestyle(req.URL.Path))
s.End()
}
func rect(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Content-Type", "image/svg+xml")
s := svg.New(w)
s.Start(500, 500)
s.Title("Rectangle")
s.Rect(250, 250, 100, 200, shapestyle(req.URL.Path))
s.End()
}
func arc(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Content-Type", "image/svg+xml")
s := svg.New(w)
s.Start(500, 500)
s.Title("Arc")
s.Arc(250, 250, 100, 100, 0, false, false, 100, 125, shapestyle(req.URL.Path))
s.End()
}
func text(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Content-Type", "image/svg+xml")
s := svg.New(w)
s.Start(500, 500)
s.Title("Text")
s.Text(250, 250, "Hello, world", "text-anchor:middle;font-size:32px;"+shapestyle(req.URL.Path))
s.End()
}
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