wide/file/files.go

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// Copyright (c) 2014-2015, b3log.org
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
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// Package file includes file related manipulations.
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package file
import (
"encoding/json"
"io/ioutil"
"net/http"
"os"
"path/filepath"
"sort"
"strings"
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"github.com/b3log/wide/conf"
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"github.com/b3log/wide/event"
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"github.com/b3log/wide/log"
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"github.com/b3log/wide/session"
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"github.com/b3log/wide/util"
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)
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// Logger.
var logger = log.NewLogger(os.Stdout)
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// Node represents a file node in file tree.
type Node struct {
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Id string `json:"id"`
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Name string `json:"name"`
Path string `json:"path"`
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IconSkin string `json:"iconSkin"` // Value should be end with a space
IsParent bool `json:"isParent"`
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Type string `json:"type"` // "f": file, "d": directory
Creatable bool `json:"creatable"` // whether can create file in this file node
Removable bool `json:"removable"` // whether can remove this file node
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IsGoAPI bool `json:"isGOAPI"`
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Mode string `json:"mode"`
Children []*Node `json:"children"`
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}
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// Snippet represents a source code snippet, used to as the result of "Find Usages", "Search".
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type Snippet struct {
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Path string `json:"path"` // file path
Line int `json:"line"` // line number
Ch int `json:"ch"` // column number
Contents []string `json:"contents"` // lines nearby
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}
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var apiNode *Node
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// initAPINode builds the Go API file node.
func initAPINode() {
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apiPath := util.Go.GetAPIPath()
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apiNode = &Node{Name: "Go API", Path: apiPath, IconSkin: "ico-ztree-dir-api ", Type: "d",
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Creatable: false, Removable: false, IsGoAPI: true, Children: []*Node{}}
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walk(apiPath, apiNode, false, false, true)
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}
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// GetFilesHandler handles request of constructing user workspace file tree.
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//
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// The Go API source code package also as a child node,
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// so that users can easily view the Go API source code in file tree.
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func GetFilesHandler(w http.ResponseWriter, r *http.Request) {
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httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
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http.Error(w, "Forbidden", http.StatusForbidden)
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return
}
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username := httpSession.Values["username"].(string)
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result := util.NewResult()
defer util.RetGzResult(w, r, result)
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userWorkspace := conf.GetUserWorkspace(username)
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workspaces := filepath.SplitList(userWorkspace)
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root := Node{Name: "root", Path: "", IconSkin: "ico-ztree-dir ", Type: "d", IsParent: true, Children: []*Node{}}
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if nil == apiNode { // lazy init
initAPINode()
}
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// workspace node process
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for _, workspace := range workspaces {
workspacePath := workspace + conf.PathSeparator + "src"
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workspaceNode := Node{
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Id: filepath.ToSlash(workspacePath), // jQuery API can't accept "\", so we convert it to "/"
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Name: workspace[strings.LastIndex(workspace, conf.PathSeparator)+1:],
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Path: filepath.ToSlash(workspacePath),
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IconSkin: "ico-ztree-dir-workspace ",
Type: "d",
Creatable: true,
Removable: false,
IsGoAPI: false,
Children: []*Node{}}
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walk(workspacePath, &workspaceNode, true, true, false)
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// add workspace node
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root.Children = append(root.Children, &workspaceNode)
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}
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// add Go API node
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root.Children = append(root.Children, apiNode)
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result.Data = root
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}
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// RefreshDirectoryHandler handles request of refresh a directory of file tree.
func RefreshDirectoryHandler(w http.ResponseWriter, r *http.Request) {
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httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
http.Error(w, "Forbidden", http.StatusForbidden)
return
}
username := httpSession.Values["username"].(string)
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r.ParseForm()
path := r.FormValue("path")
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if !util.Go.IsAPI(path) && !session.CanAccess(username, path) {
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http.Error(w, "Forbidden", http.StatusForbidden)
return
}
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node := Node{Name: "root", Path: path, IconSkin: "ico-ztree-dir ", Type: "d", Children: []*Node{}}
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walk(path, &node, true, true, false)
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w.Header().Set("Content-Type", "application/json")
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data, err := json.Marshal(node.Children)
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if err != nil {
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logger.Error(err)
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return
}
w.Write(data)
}
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// GetFileHandler handles request of opening file by editor.
func GetFileHandler(w http.ResponseWriter, r *http.Request) {
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httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
http.Error(w, "Forbidden", http.StatusForbidden)
return
}
username := httpSession.Values["username"].(string)
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result := util.NewResult()
defer util.RetResult(w, r, result)
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var args map[string]interface{}
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if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
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logger.Error(err)
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result.Succ = false
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return
}
path := args["path"].(string)
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if !util.Go.IsAPI(path) && !session.CanAccess(username, path) {
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http.Error(w, "Forbidden", http.StatusForbidden)
return
}
size := util.File.GetFileSize(path)
if size > 5242880 { // 5M
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result.Succ = false
result.Msg = "This file is too large to open :("
return
}
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data := map[string]interface{}{}
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result.Data = &data
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buf, _ := ioutil.ReadFile(path)
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extension := filepath.Ext(path)
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if util.File.IsImg(extension) {
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// image file will be open in a browser tab
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data["mode"] = "img"
username := conf.GetOwner(path)
if "" == username {
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logger.Warnf("The path [%s] has no owner")
data["path"] = ""
return
}
user := conf.GetUser(username)
data["path"] = "/workspace/" + user.Name + "/" + strings.Replace(path, user.GetWorkspace(), "", 1)
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return
}
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content := string(buf)
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if util.File.IsBinary(content) {
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result.Succ = false
result.Msg = "Can't open a binary file :("
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} else {
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data["content"] = content
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data["path"] = path
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}
}
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// SaveFileHandler handles request of saving file.
func SaveFileHandler(w http.ResponseWriter, r *http.Request) {
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httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
http.Error(w, "Forbidden", http.StatusForbidden)
return
}
username := httpSession.Values["username"].(string)
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result := util.NewResult()
defer util.RetResult(w, r, result)
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var args map[string]interface{}
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if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
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logger.Error(err)
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result.Succ = false
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return
}
filePath := args["file"].(string)
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sid := args["sid"].(string)
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if util.Go.IsAPI(filePath) || !session.CanAccess(username, filePath) {
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http.Error(w, "Forbidden", http.StatusForbidden)
return
}
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fout, err := os.Create(filePath)
if nil != err {
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logger.Error(err)
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result.Succ = false
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return
}
code := args["code"].(string)
fout.WriteString(code)
if err := fout.Close(); nil != err {
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logger.Error(err)
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result.Succ = false
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wSession := session.WideSessions.Get(sid)
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wSession.EventQueue.Queue <- &event.Event{Code: event.EvtCodeServerInternalError, Sid: sid,
Data: "can't save file " + filePath}
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return
}
}
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// NewFileHandler handles request of creating file or directory.
func NewFileHandler(w http.ResponseWriter, r *http.Request) {
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httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
http.Error(w, "Forbidden", http.StatusForbidden)
return
}
username := httpSession.Values["username"].(string)
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result := util.NewResult()
defer util.RetResult(w, r, result)
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var args map[string]interface{}
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if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
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logger.Error(err)
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result.Succ = false
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return
}
path := args["path"].(string)
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if util.Go.IsAPI(path) || !session.CanAccess(username, path) {
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http.Error(w, "Forbidden", http.StatusForbidden)
return
}
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fileType := args["fileType"].(string)
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sid := args["sid"].(string)
wSession := session.WideSessions.Get(sid)
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if !createFile(path, fileType) {
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result.Succ = false
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wSession.EventQueue.Queue <- &event.Event{Code: event.EvtCodeServerInternalError, Sid: sid,
Data: "can't create file " + path}
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return
}
if "f" == fileType {
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logger.Debugf("Created a file [%s] by user [%s]", path, wSession.Username)
} else {
logger.Debugf("Created a dir [%s] by user [%s]", path, wSession.Username)
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}
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}
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// RemoveFileHandler handles request of removing file or directory.
func RemoveFileHandler(w http.ResponseWriter, r *http.Request) {
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httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
http.Error(w, "Forbidden", http.StatusForbidden)
return
}
username := httpSession.Values["username"].(string)
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result := util.NewResult()
defer util.RetResult(w, r, result)
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var args map[string]interface{}
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if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
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logger.Error(err)
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result.Succ = false
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return
}
path := args["path"].(string)
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if util.Go.IsAPI(path) || !session.CanAccess(username, path) {
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http.Error(w, "Forbidden", http.StatusForbidden)
return
}
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sid := args["sid"].(string)
wSession := session.WideSessions.Get(sid)
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if !removeFile(path) {
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result.Succ = false
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wSession.EventQueue.Queue <- &event.Event{Code: event.EvtCodeServerInternalError, Sid: sid,
Data: "can't remove file " + path}
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return
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}
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logger.Debugf("Removed a file [%s] by user [%s]", path, wSession.Username)
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}
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// RenameFileHandler handles request of renaming file or directory.
func RenameFileHandler(w http.ResponseWriter, r *http.Request) {
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httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
http.Error(w, "Forbidden", http.StatusForbidden)
return
}
username := httpSession.Values["username"].(string)
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result := util.NewResult()
defer util.RetResult(w, r, result)
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var args map[string]interface{}
if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
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logger.Error(err)
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result.Succ = false
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return
}
oldPath := args["oldPath"].(string)
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if util.Go.IsAPI(oldPath) ||
!session.CanAccess(username, oldPath) {
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http.Error(w, "Forbidden", http.StatusForbidden)
return
}
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newPath := args["newPath"].(string)
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if util.Go.IsAPI(newPath) || !session.CanAccess(username, newPath) {
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http.Error(w, "Forbidden", http.StatusForbidden)
return
}
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sid := args["sid"].(string)
wSession := session.WideSessions.Get(sid)
if !renameFile(oldPath, newPath) {
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result.Succ = false
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wSession.EventQueue.Queue <- &event.Event{Code: event.EvtCodeServerInternalError, Sid: sid,
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Data: "can't rename file " + oldPath}
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return
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}
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logger.Debugf("Renamed a file [%s] to [%s] by user [%s]", oldPath, newPath, wSession.Username)
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}
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// Use to find results sorting.
type foundPath struct {
Path string `json:"path"`
score int
}
type foundPaths []*foundPath
func (f foundPaths) Len() int { return len(f) }
func (f foundPaths) Swap(i, j int) { f[i], f[j] = f[j], f[i] }
func (f foundPaths) Less(i, j int) bool { return f[i].score > f[j].score }
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// FindHandler handles request of find files under the specified directory with the specified filename pattern.
func FindHandler(w http.ResponseWriter, r *http.Request) {
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httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
http.Error(w, "Forbidden", http.StatusForbidden)
return
}
username := httpSession.Values["username"].(string)
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result := util.NewResult()
defer util.RetResult(w, r, result)
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var args map[string]interface{}
if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
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logger.Error(err)
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result.Succ = false
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return
}
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path := args["path"].(string) // path of selected file in file tree
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if !util.Go.IsAPI(path) && !session.CanAccess(username, path) {
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http.Error(w, "Forbidden", http.StatusForbidden)
return
}
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name := args["name"].(string)
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userWorkspace := conf.GetUserWorkspace(username)
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workspaces := filepath.SplitList(userWorkspace)
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if "" != path && !util.File.IsDir(path) {
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path = filepath.Dir(path)
}
founds := foundPaths{}
for _, workspace := range workspaces {
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rs := find(workspace+conf.PathSeparator+"src", name, []*string{})
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for _, r := range rs {
substr := util.Str.LCS(path, *r)
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founds = append(founds, &foundPath{Path: filepath.ToSlash(*r), score: len(substr)})
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}
}
sort.Sort(founds)
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result.Data = founds
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}
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// SearchTextHandler handles request of searching files under the specified directory with the specified keyword.
func SearchTextHandler(w http.ResponseWriter, r *http.Request) {
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httpSession, _ := session.HTTPSession.Get(r, "wide-session")
if httpSession.IsNew {
http.Error(w, "Forbidden", http.StatusForbidden)
return
}
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result := util.NewResult()
defer util.RetResult(w, r, result)
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var args map[string]interface{}
if err := json.NewDecoder(r.Body).Decode(&args); err != nil {
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logger.Error(err)
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result.Succ = false
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return
}
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sid := args["sid"].(string)
wSession := session.WideSessions.Get(sid)
if nil == wSession {
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result.Succ = false
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return
}
// XXX: just one directory
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dir := args["dir"].(string)
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if "" == dir {
userWorkspace := conf.GetUserWorkspace(wSession.Username)
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workspaces := filepath.SplitList(userWorkspace)
dir = workspaces[0]
}
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extension := args["extension"].(string)
text := args["text"].(string)
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founds := []*Snippet{}
if util.File.IsDir(dir) {
founds = search(dir, extension, text, []*Snippet{})
} else {
founds = searchInFile(dir, text)
}
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result.Data = founds
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}
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// walk traverses the specified path to build a file tree.
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func walk(path string, node *Node, creatable, removable, isGOAPI bool) {
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files := listFiles(path)
for _, filename := range files {
fpath := filepath.Join(path, filename)
fio, _ := os.Lstat(fpath)
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child := Node{
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Id: filepath.ToSlash(fpath), // jQuery API can't accept "\", so we convert it to "/"
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Name: filename,
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Path: filepath.ToSlash(fpath),
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Removable: removable,
IsGoAPI: isGOAPI,
Children: []*Node{}}
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node.Children = append(node.Children, &child)
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if nil == fio {
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logger.Warnf("Path [%s] is nil", fpath)
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continue
}
if fio.IsDir() {
child.Type = "d"
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child.Creatable = creatable
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child.IconSkin = "ico-ztree-dir "
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child.IsParent = true
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walk(fpath, &child, creatable, removable, isGOAPI)
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} else {
child.Type = "f"
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child.Creatable = creatable
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ext := filepath.Ext(fpath)
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child.IconSkin = getIconSkin(ext)
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}
}
return
}
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// listFiles lists names of files under the specified dirname.
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func listFiles(dirname string) []string {
f, _ := os.Open(dirname)
names, _ := f.Readdirnames(-1)
f.Close()
sort.Strings(names)
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dirs := []string{}
files := []string{}
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// sort: directories in front of files
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for _, name := range names {
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path := filepath.Join(dirname, name)
fio, err := os.Lstat(path)
if nil != err {
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logger.Warnf("Can't read file info [%s]", path)
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continue
}
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if fio.IsDir() {
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// exclude the .git direcitory
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if ".git" == fio.Name() {
continue
}
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dirs = append(dirs, name)
} else {
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// exclude the .DS_Store directory on Mac OS X
if ".DS_Store" == fio.Name() {
continue
}
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files = append(files, name)
}
}
return append(dirs, files...)
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}
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// getIconSkin gets CSS class name of icon with the specified filename extension.
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//
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// Refers to the zTree document for CSS class names.
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func getIconSkin(filenameExtension string) string {
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if util.File.IsImg(filenameExtension) {
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return "ico-ztree-img "
}
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switch filenameExtension {
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case ".html", ".htm":
return "ico-ztree-html "
case ".go":
return "ico-ztree-go "
case ".css":
return "ico-ztree-css "
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case ".txt":
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return "ico-ztree-text "
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case ".sql":
return "ico-ztree-sql "
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case ".properties":
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return "ico-ztree-pro "
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case ".md":
return "ico-ztree-md "
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case ".js", ".json":
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return "ico-ztree-js "
case ".xml":
return "ico-ztree-xml "
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default:
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return "ico-ztree-other "
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}
}
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// createFile creates file on the specified path.
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//
// fileType:
//
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// "f": file
// "d": directory
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func createFile(path, fileType string) bool {
switch fileType {
case "f":
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file, err := os.OpenFile(path, os.O_CREATE, 0775)
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if nil != err {
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logger.Error(err)
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return false
}
defer file.Close()
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logger.Tracef("Created file [%s]", path)
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return true
case "d":
err := os.Mkdir(path, 0775)
if nil != err {
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logger.Error(err)
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return false
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}
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logger.Tracef("Created directory [%s]", path)
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return true
default:
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logger.Errorf("Unsupported file type [%s]", fileType)
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return false
}
}
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// removeFile removes file on the specified path.
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func removeFile(path string) bool {
if err := os.RemoveAll(path); nil != err {
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logger.Errorf("Removes [%s] failed: [%s]", path, err.Error())
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return false
}
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logger.Tracef("Removed [%s]", path)
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return true
}
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// renameFile renames (moves) a file from the specified old path to the specified new path.
func renameFile(oldPath, newPath string) bool {
if err := os.Rename(oldPath, newPath); nil != err {
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logger.Errorf("Renames [%s] failed: [%s]", oldPath, err.Error())
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return false
}
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logger.Tracef("Renamed [%s] to [%s]", oldPath, newPath)
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return true
}
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// Default exclude file name patterns when find.
var defaultExcludesFind = []string{".git", ".svn", ".repository", "CVS", "RCS", "SCCS", ".bzr", ".metadata", ".hg"}
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// find finds files under the specified dir and its sub-directoryies with the specified name,
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// likes the command 'find dir -name name'.
func find(dir, name string, results []*string) []*string {
if !strings.HasSuffix(dir, conf.PathSeparator) {
dir += conf.PathSeparator
}
f, _ := os.Open(dir)
fileInfos, err := f.Readdir(-1)
f.Close()
if nil != err {
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logger.Errorf("Read dir [%s] failed: [%s]", dir, err.Error())
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return results
}
for _, fileInfo := range fileInfos {
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fname := fileInfo.Name()
path := dir + fname
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if fileInfo.IsDir() {
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if util.Str.Contains(fname, defaultExcludesFind) {
continue
}
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// enter the directory recursively
results = find(path, name, results)
} else {
// match filename
pattern := filepath.Dir(path) + conf.PathSeparator + name
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match, err := filepath.Match(strings.ToLower(pattern), strings.ToLower(path))
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if nil != err {
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logger.Errorf("Find match filename failed: [%s]", err.Error())
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continue
}
if match {
results = append(results, &path)
}
}
}
return results
}
// search finds file under the specified dir and its sub-directories with the specified text, likes the command 'grep'
// or 'findstr'.
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func search(dir, extension, text string, snippets []*Snippet) []*Snippet {
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if !strings.HasSuffix(dir, conf.PathSeparator) {
dir += conf.PathSeparator
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}
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f, _ := os.Open(dir)
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fileInfos, err := f.Readdir(-1)
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f.Close()
if nil != err {
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logger.Errorf("Read dir [%s] failed: [%s]", dir, err.Error())
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return snippets
}
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for _, fileInfo := range fileInfos {
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path := dir + fileInfo.Name()
2014-10-11 10:45:44 +04:00
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if fileInfo.IsDir() {
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// enter the directory recursively
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snippets = search(path, extension, text, snippets)
} else if strings.HasSuffix(path, extension) {
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// grep in file
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ss := searchInFile(path, text)
snippets = append(snippets, ss...)
}
}
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return snippets
}
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// searchInFile finds file with the specified path and text.
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func searchInFile(path string, text string) []*Snippet {
ret := []*Snippet{}
bytes, err := ioutil.ReadFile(path)
if nil != err {
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logger.Errorf("Read file [%s] failed: [%s]", path, err.Error())
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return ret
}
content := string(bytes)
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if util.File.IsBinary(content) {
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return ret
}
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lines := strings.Split(content, "\n")
for idx, line := range lines {
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ch := strings.Index(strings.ToLower(line), strings.ToLower(text))
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if -1 != ch {
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snippet := &Snippet{Path: filepath.ToSlash(path),
Line: idx + 1, Ch: ch + 1, Contents: []string{line}}
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ret = append(ret, snippet)
}
}
return ret
}