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smac_demo.go
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/
smac_demo.go
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// Copyright Piero de Salvia.
// All Rights Reserved
package main
import (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"os"
"strings"
"github.com/fsnotify/fsnotify"
"github.com/pierods/smac"
)
var (
autoComplete smac.AutoComplete
home []byte
)
func handler(rw http.ResponseWriter, r *http.Request) {
path := r.URL.Path
if strings.HasPrefix(path, "/complete") {
splitPath := strings.Split(path, "/")
stem := splitPath[2]
completions, err := autoComplete.Complete(stem)
if err != nil {
rw.Write([]byte(""))
return
}
rw.Header().Set("Content-Type", "application/json")
rw.WriteHeader(200)
json.NewEncoder(rw).Encode(&completions)
return
}
if strings.HasPrefix(path, "/accept") {
splitPath := strings.Split(path, "/")
acceptedWord := splitPath[2]
err := autoComplete.Accept(acceptedWord)
if err != nil {
err = autoComplete.Learn(acceptedWord)
if err != nil {
autoComplete.Accept(acceptedWord)
}
}
rw.WriteHeader(200)
return
}
rw.Header().Set("Content/Type", "text/html")
rw.WriteHeader(200)
rw.Write(home)
}
func main() {
goPath := os.Getenv("GOPATH")
homeFile := goPath + "/src/github.com/pierods/smac/demo/demo.html"
f, fErr := os.Open(homeFile)
if fErr != nil {
fmt.Println(fErr)
os.Exit(-1)
}
home, fErr = ioutil.ReadAll(f)
if fErr != nil {
fmt.Println(fErr)
os.Exit(-1)
}
f.Close()
wordFile := goPath + "/src/github.com/pierods/smac/demo/allwords.txt"
var err error
autoCompleteL, err := smac.NewAutoCompleteLinoF(wordFile, 2, 0, 0)
if err != nil {
fmt.Println(err)
os.Exit(-1)
}
autoComplete = &autoCompleteL
watcher := watch(homeFile)
defer watcher.Close()
http.HandleFunc("/", handler)
fmt.Println("Listener : Started : Listening on port 30000")
http.ListenAndServe(":30000", nil)
}
func watch(fileName string) *fsnotify.Watcher {
watcher, err := fsnotify.NewWatcher()
if err != nil {
fmt.Println(err)
os.Exit(-1)
}
go func() {
for {
select {
case event := <-watcher.Events:
if event.Op&fsnotify.Write == fsnotify.Write {
fmt.Println("re-reading file:", event.Name)
f, fErr := os.Open(fileName)
if fErr != nil {
fmt.Println(fErr)
os.Exit(-1)
}
home, fErr = ioutil.ReadAll(f)
if fErr != nil {
fmt.Println(fErr)
os.Exit(-1)
}
f.Close()
}
case err := <-watcher.Errors:
fmt.Println("error:", err)
}
}
}()
err = watcher.Add(fileName)
if err != nil {
fmt.Println(err)
os.Exit(-1)
}
return watcher
}