func main() {
var opts struct {
Width int `short:"W" long:"width" description:"Width of the grid" required:"true"`
Height int `short:"H" long:"height" description:"Height of the grid" required:"true"`
Blocks int `short:"B" long:"blocks" description:"Blocks in the grid" required:"true"`
DrawMap bool `short:"m" long:"draw-map" description:"Draw the map in ascii-art"`
DrawSolution bool `short:"s" long:"draw-solution" description:"Draw the solution in ascii-art"`
NoMachineOutput bool `short:"q" long:"no-machine-output" description:"No machine output"`
}
if _, err := flags.Parse(&opts); err != nil {
log.Fatalf("Parsing error: %v", err)
}
shikakuMap := shikaku.NewShikakuMap(opts.Width, opts.Height, 0, 0)
if err := shikakuMap.GenerateBlocks(opts.Blocks); err != nil {
log.Fatalf("Failed to generate %d blocks: %v", opts.Blocks, err)
}
outputs := []string{}
if !opts.NoMachineOutput {
outputs = append(outputs, shikakuMap.String())
}
if opts.DrawMap {
outputs = append(outputs, shikakuMap.DrawMap())
}
if opts.DrawSolution {
outputs = append(outputs, shikakuMap.DrawSolution())
}
fmt.Println(strings.Join(outputs, "\n\n"))
}
func handler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
// extract query from url
u, err := url.Parse(r.URL.String())
if err != nil {
fmt.Fprintf(w, "URL error: %v:\n", err)
return
}
// parse query
m, err := url.ParseQuery(u.RawQuery)
if err != nil {
fmt.Fprintf(w, "URL query error: %v:\n", err)
return
}
// check if no arguments
if len(m) == 0 {
http.Redirect(w, r, "?width=8&height=8&blocks=10&draw-map=1&draw-solution=1&no-machine-output=0", http.StatusFound)
}
// unmarshal arguments
var opts struct {
Width int `schema:"width"`
Height int `schema:"height"`
Blocks int `schema:"blocks"`
DrawMap bool `schema:"draw-map"`
DrawSolution bool `schema:"draw-solution"`
NoMachineOutput bool `schema:"no-machine-output"`
Srand int64 `schema:"srand"`
}
decoder := schema.NewDecoder()
err = decoder.Decode(&opts, m)
if err != nil {
fmt.Fprintf(w, "Parameters error: %v:\n", err)
return
}
// check arguments
if opts.Width > 20 {
fmt.Fprintf(w, "Max width is: 20\n")
return
}
if opts.Width < 4 {
fmt.Fprintf(w, "Min width is: 4\n")
return
}
if opts.Height > 20 {
fmt.Fprintf(w, "Max height is: 20\n")
return
}
if opts.Height < 4 {
fmt.Fprintf(w, "Min height is: 4\n")
return
}
if opts.Blocks < 1 {
fmt.Fprintf(w, "Min value for blocks is 0\n")
return
}
if opts.Blocks > 70 {
fmt.Fprintf(w, "Max value for blocks is 70\n")
return
}
if opts.Blocks > opts.Width*opts.Height/3+1 {
fmt.Fprintf(w, "Max value for blocks is height*value/3 = %d\n", opts.Width*opts.Height/3)
return
}
// draw
if opts.Srand > 0 {
rand.Seed(opts.Srand)
}
shikakuMap := shikaku.NewShikakuMap(opts.Width, opts.Height, 0, 0)
if err := shikakuMap.GenerateBlocks(opts.Blocks); err != nil {
fmt.Fprintf(w, "Failed to generate %d blocks: %v", opts.Blocks, err)
return
}
outputs := []string{}
if !opts.NoMachineOutput {
outputs = append(outputs, shikakuMap.String())
}
if opts.DrawMap {
outputs = append(outputs, shikakuMap.DrawMap())
}
if opts.DrawSolution {
outputs = append(outputs, shikakuMap.DrawSolution())
}
fmt.Fprintln(w, strings.Join(outputs, "\n\n"))
}