153 lines
3.6 KiB
Go
153 lines
3.6 KiB
Go
package editor
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import (
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"bytes"
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"encoding/json"
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"net/http"
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"os"
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"os/exec"
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"runtime"
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"strconv"
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"strings"
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"github.com/b3log/wide/conf"
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"github.com/b3log/wide/user"
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"github.com/golang/glog"
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"github.com/gorilla/websocket"
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)
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var editorWS = map[string]*websocket.Conn{}
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func WSHandler(w http.ResponseWriter, r *http.Request) {
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session, _ := user.Session.Get(r, "wide-session")
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sid := session.Values["id"].(string)
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editorWS[sid], _ = websocket.Upgrade(w, r, nil, 1024, 1024)
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ret := map[string]interface{}{"output": "Editor initialized", "cmd": "init-editor"}
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editorWS[sid].WriteJSON(&ret)
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glog.Infof("Open a new [Editor] with session [%s], %d", sid, len(editorWS))
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args := map[string]interface{}{}
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for {
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if err := editorWS[sid].ReadJSON(&args); err != nil {
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if err.Error() == "EOF" {
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return
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}
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if err.Error() == "unexpected EOF" {
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return
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}
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glog.Error("Editor WS ERROR: " + err.Error())
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return
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}
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code := args["code"].(string)
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line := int(args["cursorLine"].(float64))
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ch := int(args["cursorCh"].(float64))
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offset := getCursorOffset(code, line, ch)
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// glog.Infof("offset: %d", offset)
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argv := []string{"-f=json", "autocomplete", strconv.Itoa(offset)}
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var output bytes.Buffer
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cmd := exec.Command("gocode", argv...)
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cmd.Stdout = &output
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stdin, _ := cmd.StdinPipe()
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cmd.Start()
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stdin.Write([]byte(code))
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stdin.Close()
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cmd.Wait()
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ret = map[string]interface{}{"output": string(output.Bytes()), "cmd": "autocomplete"}
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if err := editorWS[sid].WriteJSON(&ret); err != nil {
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glog.Error("Editor WS ERROR: " + err.Error())
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return
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}
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}
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}
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func AutocompleteHandler(w http.ResponseWriter, r *http.Request) {
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decoder := json.NewDecoder(r.Body)
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var args map[string]interface{}
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if err := decoder.Decode(&args); err != nil {
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glog.Error(err)
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http.Error(w, err.Error(), 500)
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return
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}
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session, _ := user.Session.Get(r, "wide-session")
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username := session.Values["username"].(string)
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code := args["code"].(string)
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line := int(args["cursorLine"].(float64))
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ch := int(args["cursorCh"].(float64))
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offset := getCursorOffset(code, line, ch)
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// glog.Infof("offset: %d", offset)
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userWorkspace := conf.Wide.UserWorkspaces + string(os.PathSeparator) + username
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//glog.Infof("User [%s] workspace [%s]", username, userWorkspace)
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userLib := userWorkspace + string(os.PathSeparator) + "pkg" + string(os.PathSeparator) +
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runtime.GOOS + "_" + runtime.GOARCH
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masterWorkspace := conf.Wide.Workspace
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//glog.Infof("Master workspace [%s]", masterWorkspace)
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masterLib := masterWorkspace + string(os.PathSeparator) + "pkg" + string(os.PathSeparator) +
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runtime.GOOS + "_" + runtime.GOARCH
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libPath := userLib + string(os.PathListSeparator) + masterLib
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//glog.Infof("gocode set lib-path %s", libPath)
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// FIXME: 使用 gocode set lib-path 在多工作空间环境下肯定是有问题的，需要考虑其他实现方式
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argv := []string{"set", "lib-path", libPath}
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cmd := exec.Command("gocode", argv...)
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cmd.Start()
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//argv = []string{"set", "autobuild", "true"}
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//cmd := exec.Command("gocode", argv...)
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//cmd.Start()
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argv = []string{"-f=json", "autocomplete", strconv.Itoa(offset)}
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cmd = exec.Command("gocode", argv...)
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stdin, _ := cmd.StdinPipe()
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stdin.Write([]byte(code))
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stdin.Close()
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output, err := cmd.CombinedOutput()
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if nil != err {
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glog.Error(err)
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http.Error(w, err.Error(), 500)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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w.Write(output)
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}
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func getCursorOffset(code string, line, ch int) (offset int) {
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lines := strings.Split(code, "\n")
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for i := 0; i < line; i++ {
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offset += len(lines[i])
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}
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offset += line + ch
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return
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}
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