2015-01-18 08:59:10 +03:00
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// Copyright (c) 2014-2015, b3log.org
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2014-11-20 06:30:18 +03:00
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//
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2014-11-12 18:13:14 +03:00
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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2014-11-20 06:30:18 +03:00
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//
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2014-11-12 18:13:14 +03:00
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// http://www.apache.org/licenses/LICENSE-2.0
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2014-11-20 06:30:18 +03:00
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//
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2014-11-12 18:13:14 +03:00
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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2014-12-07 06:14:10 +03:00
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// Package editor includes editor related manipulations.
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2014-08-18 17:45:43 +04:00
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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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2014-10-28 08:22:39 +03:00
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"path/filepath"
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2014-09-04 19:09:51 +04:00
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"runtime"
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2014-08-18 17:45:43 +04:00
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"strconv"
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2014-09-01 16:50:51 +04:00
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"strings"
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2014-10-29 13:15:18 +03:00
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"time"
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2014-09-07 13:07:25 +04:00
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"github.com/b3log/wide/conf"
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2014-10-11 10:08:29 +04:00
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"github.com/b3log/wide/file"
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2014-12-13 13:47:41 +03:00
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"github.com/b3log/wide/log"
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2014-09-17 10:35:48 +04:00
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"github.com/b3log/wide/session"
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2014-09-11 20:22:24 +04:00
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"github.com/b3log/wide/util"
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2014-09-07 13:07:25 +04:00
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"github.com/gorilla/websocket"
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2014-08-18 17:45:43 +04:00
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)
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2014-12-13 13:47:41 +03:00
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// Logger.
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var logger = log.NewLogger(os.Stdout)
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2014-10-29 13:15:18 +03:00
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// WSHandler handles request of creating editor channel.
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2014-12-11 10:32:24 +03:00
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// XXX: NOT used at present
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2014-08-18 17:45:43 +04:00
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func WSHandler(w http.ResponseWriter, r *http.Request) {
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2014-10-29 13:15:18 +03:00
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httpSession, _ := session.HTTPSession.Get(r, "wide-session")
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2014-11-26 08:49:27 +03:00
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if httpSession.IsNew {
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http.Error(w, "Forbidden", http.StatusForbidden)
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return
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}
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2014-10-29 13:15:18 +03:00
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sid := httpSession.Values["id"].(string)
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conn, _ := websocket.Upgrade(w, r, nil, 1024, 1024)
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editorChan := util.WSChannel{Sid: sid, Conn: conn, Request: r, Time: time.Now()}
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2014-08-18 17:45:43 +04:00
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ret := map[string]interface{}{"output": "Editor initialized", "cmd": "init-editor"}
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2014-11-20 08:59:08 +03:00
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err := editorChan.WriteJSON(&ret)
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2014-11-20 06:30:18 +03:00
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if nil != err {
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return
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}
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session.EditorWS[sid] = &editorChan
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2014-08-18 17:45:43 +04:00
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2014-12-14 18:05:54 +03:00
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logger.Tracef("Open a new [Editor] with session [%s], %d", sid, len(session.EditorWS))
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2014-08-18 17:45:43 +04:00
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args := map[string]interface{}{}
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for {
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2014-11-20 09:11:54 +03:00
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if err := session.EditorWS[sid].ReadJSON(&args); err != nil {
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2014-08-18 17:45:43 +04:00
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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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2014-09-01 16:50:51 +04:00
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offset := getCursorOffset(code, line, ch)
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2014-08-18 17:45:43 +04:00
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2015-01-11 07:12:06 +03:00
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logger.Tracef("offset: %d", offset)
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2014-08-18 17:45:43 +04:00
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2014-11-26 06:54:01 +03:00
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gocode := util.Go.GetExecutableInGOBIN("gocode")
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2014-08-18 17:45:43 +04:00
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argv := []string{"-f=json", "autocomplete", strconv.Itoa(offset)}
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var output bytes.Buffer
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2014-09-15 05:52:36 +04:00
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cmd := exec.Command(gocode, argv...)
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2014-08-18 17:45:43 +04:00
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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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2014-11-20 08:59:08 +03:00
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if err := session.EditorWS[sid].WriteJSON(&ret); err != nil {
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2014-12-13 13:47:41 +03:00
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logger.Error("Editor WS ERROR: " + err.Error())
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2014-08-18 17:45:43 +04:00
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return
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}
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}
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}
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2014-10-29 13:15:18 +03:00
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// AutocompleteHandler handles request of code autocompletion.
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2014-08-18 17:45:43 +04:00
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func AutocompleteHandler(w http.ResponseWriter, r *http.Request) {
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var args map[string]interface{}
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2014-10-28 16:32:19 +03:00
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if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
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2014-12-13 13:47:41 +03:00
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logger.Error(err)
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2014-08-18 17:45:43 +04:00
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http.Error(w, err.Error(), 500)
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return
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}
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2014-09-17 10:35:48 +04:00
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session, _ := session.HTTPSession.Get(r, "wide-session")
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2014-11-26 08:49:27 +03:00
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if session.IsNew {
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http.Error(w, "Forbidden", http.StatusForbidden)
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return
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}
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2014-09-03 10:53:42 +04:00
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username := session.Values["username"].(string)
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2014-09-02 20:26:10 +04:00
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2014-09-16 18:39:22 +04:00
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path := args["path"].(string)
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fout, err := os.Create(path)
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if nil != err {
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2014-12-13 13:47:41 +03:00
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logger.Error(err)
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2014-09-16 18:39:22 +04:00
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http.Error(w, err.Error(), 500)
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return
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}
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2014-08-18 17:45:43 +04:00
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code := args["code"].(string)
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2014-09-16 18:39:22 +04:00
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fout.WriteString(code)
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if err := fout.Close(); nil != err {
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2014-12-13 13:47:41 +03:00
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logger.Error(err)
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2014-09-16 18:39:22 +04:00
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http.Error(w, err.Error(), 500)
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return
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}
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2014-09-15 06:08:49 +04:00
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2014-08-18 17:45:43 +04:00
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line := int(args["cursorLine"].(float64))
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ch := int(args["cursorCh"].(float64))
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2014-09-01 16:50:51 +04:00
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offset := getCursorOffset(code, line, ch)
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2014-08-18 17:45:43 +04:00
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2015-01-11 07:12:06 +03:00
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logger.Tracef("offset: %d", offset)
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2014-08-18 17:45:43 +04:00
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2014-12-19 10:43:59 +03:00
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userWorkspace := conf.GetUserWorkspace(username)
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2014-10-28 08:22:39 +03:00
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workspaces := filepath.SplitList(userWorkspace)
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2014-10-26 09:46:15 +03:00
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libPath := ""
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for _, workspace := range workspaces {
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userLib := workspace + conf.PathSeparator + "pkg" + conf.PathSeparator +
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runtime.GOOS + "_" + runtime.GOARCH
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libPath += userLib + conf.PathListSeparator
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}
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2014-09-05 07:07:29 +04:00
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2014-12-18 10:54:58 +03:00
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logger.Tracef("gocode set lib-path [%s]", libPath)
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2014-09-04 19:09:51 +04:00
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2014-10-29 13:15:18 +03:00
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// FIXME: using gocode set lib-path has some issues while accrossing workspaces
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2014-11-26 06:54:01 +03:00
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gocode := util.Go.GetExecutableInGOBIN("gocode")
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2015-03-10 06:49:38 +03:00
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exec.Command(gocode, []string{"set", "lib-path", libPath}...).Run()
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2014-09-02 20:26:10 +04:00
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2015-03-10 06:49:38 +03:00
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argv := []string{"-f=json", "--in=" + path, "autocomplete", strconv.Itoa(offset)}
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2014-09-17 12:13:00 +04:00
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cmd := exec.Command(gocode, argv...)
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2014-08-18 17:45:43 +04:00
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2014-09-03 10:53:42 +04:00
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output, err := cmd.CombinedOutput()
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if nil != err {
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2014-12-13 13:47:41 +03:00
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logger.Error(err)
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2014-09-03 10:53:42 +04:00
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http.Error(w, err.Error(), 500)
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return
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}
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2014-08-18 17:45:43 +04:00
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w.Header().Set("Content-Type", "application/json")
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2014-09-03 10:53:42 +04:00
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w.Write(output)
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2014-08-18 17:45:43 +04:00
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}
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2014-09-01 16:50:51 +04:00
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2014-10-29 13:15:18 +03:00
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// GetExprInfoHandler handles request of getting expression infomation.
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2014-10-10 07:18:52 +04:00
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func GetExprInfoHandler(w http.ResponseWriter, r *http.Request) {
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2015-11-24 10:42:28 +03:00
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result := util.NewResult()
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defer util.RetResult(w, r, result)
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2014-10-10 07:18:52 +04:00
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session, _ := session.HTTPSession.Get(r, "wide-session")
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username := session.Values["username"].(string)
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var args map[string]interface{}
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2014-10-28 16:32:19 +03:00
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if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
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2014-12-13 13:47:41 +03:00
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logger.Error(err)
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2014-10-10 07:18:52 +04:00
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http.Error(w, err.Error(), 500)
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return
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}
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path := args["path"].(string)
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2015-08-05 06:09:52 +03:00
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curDir := filepath.Dir(path)
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filename := filepath.Base(path)
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2014-10-10 07:18:52 +04:00
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fout, err := os.Create(path)
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if nil != err {
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2014-12-13 13:47:41 +03:00
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logger.Error(err)
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2015-11-24 10:42:28 +03:00
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result.Succ = false
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2014-10-10 07:18:52 +04:00
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return
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}
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code := args["code"].(string)
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fout.WriteString(code)
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if err := fout.Close(); nil != err {
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2014-12-13 13:47:41 +03:00
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logger.Error(err)
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2015-11-24 10:42:28 +03:00
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result.Succ = false
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2014-10-10 07:18:52 +04:00
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return
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}
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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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2014-10-12 18:58:08 +04:00
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2015-01-11 07:12:06 +03:00
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logger.Tracef("offset [%d]", offset)
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2014-10-10 07:18:52 +04:00
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2015-08-05 07:58:39 +03:00
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ideStub := util.Go.GetExecutableInGOBIN("gotools")
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2015-08-05 06:09:52 +03:00
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argv := []string{"types", "-pos", filename + ":" + strconv.Itoa(offset), "-info", "."}
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2014-12-07 06:14:10 +03:00
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cmd := exec.Command(ideStub, argv...)
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2014-10-10 07:18:52 +04:00
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cmd.Dir = curDir
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setCmdEnv(cmd, username)
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output, err := cmd.CombinedOutput()
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if nil != err {
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2014-12-13 13:47:41 +03:00
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logger.Error(err)
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2014-10-10 07:18:52 +04:00
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http.Error(w, err.Error(), 500)
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return
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}
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exprInfo := strings.TrimSpace(string(output))
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if "" == exprInfo {
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2015-11-24 10:42:28 +03:00
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result.Succ = false
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2014-10-10 07:18:52 +04:00
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return
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}
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2015-11-24 10:42:28 +03:00
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result.Data = exprInfo
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2014-10-10 07:18:52 +04:00
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}
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2014-10-29 13:15:18 +03:00
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// FindDeclarationHandler handles request of finding declaration.
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2014-09-11 20:22:24 +04:00
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func FindDeclarationHandler(w http.ResponseWriter, r *http.Request) {
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2015-11-24 10:42:28 +03:00
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result := util.NewResult()
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defer util.RetResult(w, r, result)
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2014-09-11 20:22:24 +04:00
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2014-09-17 10:35:48 +04:00
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session, _ := session.HTTPSession.Get(r, "wide-session")
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2014-11-26 08:49:27 +03:00
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if session.IsNew {
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http.Error(w, "Forbidden", http.StatusForbidden)
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return
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}
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2014-09-11 20:22:24 +04:00
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username := session.Values["username"].(string)
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var args map[string]interface{}
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2014-10-28 16:32:19 +03:00
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if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
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2014-12-13 13:47:41 +03:00
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logger.Error(err)
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2014-09-11 20:22:24 +04:00
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http.Error(w, err.Error(), 500)
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return
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}
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2014-09-13 09:05:50 +04:00
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path := args["path"].(string)
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2015-08-05 06:09:52 +03:00
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curDir := filepath.Dir(path)
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filename := filepath.Base(path)
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2014-09-11 20:22:24 +04:00
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2014-09-13 09:05:50 +04:00
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fout, err := os.Create(path)
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2014-09-11 20:22:24 +04:00
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if nil != err {
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2014-12-13 13:47:41 +03:00
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logger.Error(err)
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2015-11-24 10:42:28 +03:00
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result.Succ = false
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2014-09-11 20:22:24 +04:00
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return
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}
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code := args["code"].(string)
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fout.WriteString(code)
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if err := fout.Close(); nil != err {
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2014-12-13 13:47:41 +03:00
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logger.Error(err)
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2015-11-24 10:42:28 +03:00
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result.Succ = false
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2014-09-11 20:22:24 +04:00
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return
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}
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line := int(args["cursorLine"].(float64))
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|
|
ch := int(args["cursorCh"].(float64))
|
|
|
|
|
|
|
|
offset := getCursorOffset(code, line, ch)
|
2014-10-13 08:22:50 +04:00
|
|
|
|
2015-01-11 07:12:06 +03:00
|
|
|
logger.Tracef("offset [%d]", offset)
|
2014-09-11 20:22:24 +04:00
|
|
|
|
2015-08-05 07:58:39 +03:00
|
|
|
ideStub := util.Go.GetExecutableInGOBIN("gotools")
|
2015-08-05 06:09:52 +03:00
|
|
|
argv := []string{"types", "-pos", filename + ":" + strconv.Itoa(offset), "-def", "."}
|
2014-12-07 06:14:10 +03:00
|
|
|
cmd := exec.Command(ideStub, argv...)
|
2014-09-11 20:22:24 +04:00
|
|
|
cmd.Dir = curDir
|
|
|
|
|
|
|
|
setCmdEnv(cmd, username)
|
|
|
|
|
|
|
|
output, err := cmd.CombinedOutput()
|
|
|
|
if nil != err {
|
2014-12-13 13:47:41 +03:00
|
|
|
logger.Error(err)
|
2014-09-11 20:22:24 +04:00
|
|
|
http.Error(w, err.Error(), 500)
|
|
|
|
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2014-09-12 06:10:21 +04:00
|
|
|
found := strings.TrimSpace(string(output))
|
|
|
|
if "" == found {
|
2015-11-24 10:42:28 +03:00
|
|
|
result.Succ = false
|
2014-09-12 06:10:21 +04:00
|
|
|
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
|
|
|
part := found[:strings.LastIndex(found, ":")]
|
|
|
|
cursorSep := strings.LastIndex(part, ":")
|
2014-09-13 09:05:50 +04:00
|
|
|
path = found[:cursorSep]
|
2015-08-05 06:09:52 +03:00
|
|
|
|
2014-11-04 19:27:43 +03:00
|
|
|
cursorLine, _ := strconv.Atoi(found[cursorSep+1 : strings.LastIndex(found, ":")])
|
|
|
|
cursorCh, _ := strconv.Atoi(found[strings.LastIndex(found, ":")+1:])
|
2014-09-12 06:10:21 +04:00
|
|
|
|
2015-11-24 10:42:28 +03:00
|
|
|
data := map[string]interface{}{}
|
|
|
|
|
2015-08-05 06:09:52 +03:00
|
|
|
data["path"] = filepath.ToSlash(path)
|
2014-09-12 06:10:21 +04:00
|
|
|
data["cursorLine"] = cursorLine
|
|
|
|
data["cursorCh"] = cursorCh
|
2015-11-24 10:42:28 +03:00
|
|
|
|
|
|
|
result.Data = data
|
2014-09-11 20:22:24 +04:00
|
|
|
}
|
|
|
|
|
2014-10-29 13:15:18 +03:00
|
|
|
// FindUsagesHandler handles request of finding usages.
|
2014-09-12 11:55:52 +04:00
|
|
|
func FindUsagesHandler(w http.ResponseWriter, r *http.Request) {
|
2015-11-24 10:42:28 +03:00
|
|
|
result := util.NewResult()
|
|
|
|
defer util.RetResult(w, r, result)
|
2014-09-12 11:55:52 +04:00
|
|
|
|
2014-09-17 10:35:48 +04:00
|
|
|
session, _ := session.HTTPSession.Get(r, "wide-session")
|
2014-11-26 08:49:27 +03:00
|
|
|
if session.IsNew {
|
|
|
|
http.Error(w, "Forbidden", http.StatusForbidden)
|
|
|
|
|
|
|
|
return
|
|
|
|
}
|
2014-09-12 11:55:52 +04:00
|
|
|
username := session.Values["username"].(string)
|
|
|
|
|
|
|
|
var args map[string]interface{}
|
|
|
|
|
2014-10-28 16:32:19 +03:00
|
|
|
if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
|
2014-12-13 13:47:41 +03:00
|
|
|
logger.Error(err)
|
2014-09-12 11:55:52 +04:00
|
|
|
http.Error(w, err.Error(), 500)
|
|
|
|
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2014-10-10 07:18:52 +04:00
|
|
|
filePath := args["path"].(string)
|
2015-08-05 06:09:52 +03:00
|
|
|
curDir := filepath.Dir(filePath)
|
|
|
|
filename := filepath.Base(filePath)
|
2014-09-12 11:55:52 +04:00
|
|
|
|
|
|
|
fout, err := os.Create(filePath)
|
|
|
|
|
|
|
|
if nil != err {
|
2014-12-13 13:47:41 +03:00
|
|
|
logger.Error(err)
|
2015-11-24 10:42:28 +03:00
|
|
|
result.Succ = false
|
2014-09-12 11:55:52 +04:00
|
|
|
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
|
|
|
code := args["code"].(string)
|
|
|
|
fout.WriteString(code)
|
|
|
|
|
|
|
|
if err := fout.Close(); nil != err {
|
2014-12-13 13:47:41 +03:00
|
|
|
logger.Error(err)
|
2015-11-24 10:42:28 +03:00
|
|
|
result.Succ = false
|
2014-09-12 11:55:52 +04:00
|
|
|
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
|
|
|
line := int(args["cursorLine"].(float64))
|
|
|
|
ch := int(args["cursorCh"].(float64))
|
|
|
|
|
|
|
|
offset := getCursorOffset(code, line, ch)
|
2015-01-11 07:12:06 +03:00
|
|
|
logger.Tracef("offset [%d]", offset)
|
2014-09-12 11:55:52 +04:00
|
|
|
|
2015-08-05 07:58:39 +03:00
|
|
|
ideStub := util.Go.GetExecutableInGOBIN("gotools")
|
2015-08-05 06:09:52 +03:00
|
|
|
argv := []string{"types", "-pos", filename + ":" + strconv.Itoa(offset), "-use", "."}
|
2014-12-07 06:14:10 +03:00
|
|
|
cmd := exec.Command(ideStub, argv...)
|
2014-09-12 11:55:52 +04:00
|
|
|
cmd.Dir = curDir
|
|
|
|
|
|
|
|
setCmdEnv(cmd, username)
|
|
|
|
|
|
|
|
output, err := cmd.CombinedOutput()
|
|
|
|
if nil != err {
|
2014-12-13 13:47:41 +03:00
|
|
|
logger.Error(err)
|
2014-09-12 11:55:52 +04:00
|
|
|
http.Error(w, err.Error(), 500)
|
|
|
|
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2015-11-24 10:42:28 +03:00
|
|
|
out := strings.TrimSpace(string(output))
|
|
|
|
if "" == out {
|
|
|
|
result.Succ = false
|
2014-09-12 11:55:52 +04:00
|
|
|
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2015-11-24 10:42:28 +03:00
|
|
|
founds := strings.Split(out, "\n")
|
2014-10-11 10:08:29 +04:00
|
|
|
usages := []*file.Snippet{}
|
2014-09-12 11:55:52 +04:00
|
|
|
for _, found := range founds {
|
|
|
|
found = strings.TrimSpace(found)
|
|
|
|
|
|
|
|
part := found[:strings.LastIndex(found, ":")]
|
|
|
|
cursorSep := strings.LastIndex(part, ":")
|
2015-08-05 06:09:52 +03:00
|
|
|
path := filepath.ToSlash(found[:cursorSep])
|
2014-09-12 12:50:04 +04:00
|
|
|
cursorLine, _ := strconv.Atoi(found[cursorSep+1 : strings.LastIndex(found, ":")])
|
|
|
|
cursorCh, _ := strconv.Atoi(found[strings.LastIndex(found, ":")+1:])
|
2014-09-12 11:55:52 +04:00
|
|
|
|
2014-10-12 18:00:26 +04:00
|
|
|
usage := &file.Snippet{Path: path, Line: cursorLine, Ch: cursorCh, Contents: []string{""}}
|
2014-09-12 11:55:52 +04:00
|
|
|
usages = append(usages, usage)
|
|
|
|
}
|
|
|
|
|
2015-11-24 10:42:28 +03:00
|
|
|
result.Data = usages
|
2014-09-12 11:55:52 +04:00
|
|
|
}
|
|
|
|
|
2014-10-29 13:15:18 +03:00
|
|
|
// getCursorOffset calculates the cursor offset.
|
2014-09-25 09:37:59 +04:00
|
|
|
//
|
2014-10-29 13:15:18 +03:00
|
|
|
// line is the line number, starts with 0 that means the first line
|
|
|
|
// ch is the column number, starts with 0 that means the first column
|
2014-09-01 16:50:51 +04:00
|
|
|
func getCursorOffset(code string, line, ch int) (offset int) {
|
|
|
|
lines := strings.Split(code, "\n")
|
|
|
|
|
2014-10-29 13:15:18 +03:00
|
|
|
// calculate sum length of lines before
|
2014-09-01 16:50:51 +04:00
|
|
|
for i := 0; i < line; i++ {
|
|
|
|
offset += len(lines[i])
|
|
|
|
}
|
|
|
|
|
2014-10-29 13:15:18 +03:00
|
|
|
// calculate length of the current line and column
|
2014-09-13 09:05:50 +04:00
|
|
|
curLine := lines[line]
|
|
|
|
var buffer bytes.Buffer
|
|
|
|
r := []rune(curLine)
|
|
|
|
for i := 0; i < ch; i++ {
|
|
|
|
buffer.WriteString(string(r[i]))
|
|
|
|
}
|
|
|
|
|
2014-10-29 13:15:18 +03:00
|
|
|
offset += len(buffer.String()) // append length of current line
|
|
|
|
offset += line // append number of '\n'
|
2014-09-01 16:50:51 +04:00
|
|
|
|
2014-09-13 09:05:50 +04:00
|
|
|
return offset
|
2014-09-01 16:50:51 +04:00
|
|
|
}
|
2014-09-11 20:22:24 +04:00
|
|
|
|
|
|
|
func setCmdEnv(cmd *exec.Cmd, username string) {
|
2014-12-19 10:43:59 +03:00
|
|
|
userWorkspace := conf.GetUserWorkspace(username)
|
2014-09-11 20:22:24 +04:00
|
|
|
|
|
|
|
cmd.Env = append(cmd.Env,
|
|
|
|
"GOPATH="+userWorkspace,
|
|
|
|
"GOOS="+runtime.GOOS,
|
|
|
|
"GOARCH="+runtime.GOARCH,
|
|
|
|
"GOROOT="+runtime.GOROOT(),
|
|
|
|
"PATH="+os.Getenv("PATH"))
|
|
|
|
}
|