func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "usage: %s [options]\n", os.Args[0])
flag.PrintDefaults()
}
flag.IntVar(&options.prefixSize, "prefix", 2, "prefix size")
flag.StringVar(&options.httpAddr, "http", "", "HTTP listen address (e.g. 127.0.0.1:3000)")
flag.IntVar(&options.maxOutputSize, "output", 200, "max output size in words")
flag.Int64Var(&options.seed, "seed", -1, "seed for random number generator")
flag.BoolVar(&options.version, "version", false, "print version and exit")
flag.Parse()
if options.version {
fmt.Printf("historybot v%v\n", Version)
os.Exit(0)
}
if options.seed < 0 {
options.seed = time.Now().UnixNano()
fmt.Fprintln(os.Stderr, "seed:", options.seed)
}
rand.Seed(options.seed)
events := otd.Events()
serveAddress := "127.0.0.1:23000"
if options.httpAddr != "" {
serveAddress = options.httpAddr
}
fmt.Fprintln(os.Stderr, "Listening on:", serveAddress)
fmt.Fprintln(os.Stderr, "Use `--httpAddr` flag to change the default address")
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
var jsonResp struct {
Text string `json:"text"`
}
jsonResp.Text = otd.RandomEvent(events)
js, err := json.Marshal(jsonResp)
if err != nil {
fmt.Fprintln(os.Stderr, err)
}
w.Write(js)
})
// Fringe Bot
http.HandleFunc("/fringe", func(w http.ResponseWriter, r *http.Request) {
var jsonResp struct {
Text string `json:"text"`
}
fringeEvents, err := readLines("events/fringe")
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
// Create input string
var nevents []string
var years []string
for _, text := range fringeEvents {
parts := strings.Split(text, "–")
if len(parts) > 1 {
nevents = append(nevents, parts[1])
years = append(years, strings.Replace(parts[0], "On this day in ", "", -1))
}
}
year := RandomYear(years)
jevents := strings.Join(nevents, "\n")
var in io.Reader
in = strings.NewReader(jevents)
// Build Markov chain
chain, err := markov.NewChain(in, options.prefixSize)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
// Write response
chainText := chain.Generate(options.maxOutputSize)
jsonResp.Text = fmt.Sprintf("In a parallel universe, on this day in %s- %s", year, chainText)
js, err := json.Marshal(jsonResp)
if err != nil {
fmt.Fprintln(os.Stderr, err)
}
w.Write(js)
})
err := http.ListenAndServe(serveAddress, nil)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "usage: %s [options]\n", os.Args[0])
flag.PrintDefaults()
}
flag.IntVar(&options.prefixSize, "prefix", 2, "prefix size")
flag.IntVar(&options.maxOutputSize, "output", 200, "max output size in words")
flag.Int64Var(&options.seed, "seed", -1, "seed for random number generator")
flag.StringVar(&options.filePath, "file", "grimm.txt", "source file (if not provided will read from stdin)")
flag.StringVar(&options.httpAddr, "http", "127.0.0.1:23001", "HTTP listen address (e.g. 127.0.0.1:230001)")
flag.BoolVar(&options.version, "version", false, "print version and exit")
flag.Parse()
if options.version {
fmt.Printf("grimmbot v%v\n", Version)
os.Exit(0)
}
if options.seed < 0 {
options.seed = time.Now().UnixNano()
fmt.Fprintln(os.Stderr, "seed:", options.seed)
}
rand.Seed(options.seed)
var err error
var file *os.File
var in io.Reader
if options.filePath != "" {
file, err = os.Open(options.filePath)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
in = file
} else {
in = os.Stdin
}
chain, err := markov.NewChain(in, options.prefixSize)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
if file != nil {
file.Close()
}
if options.httpAddr != "" {
fmt.Fprintln(os.Stderr, "Listening on:", options.httpAddr)
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
var jsonResp struct {
Text string `json:"text"`
}
jsonResp.Text = chain.Generate(options.maxOutputSize)
js, err := json.Marshal(jsonResp)
if err != nil {
fmt.Fprintln(os.Stderr, err)
}
w.Write(js)
})
err = http.ListenAndServe(options.httpAddr, nil)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
} else {
fmt.Println(chain.Generate(options.maxOutputSize))
}
}