cmd/micro/clean.go

   1 package main
   2
   3 import (
   4         "bufio"
   5         "encoding/gob"
   6         "fmt"
   7         "io/ioutil"
   8         "os"
   9         "path/filepath"
  10         "sort"
  11         "strings"
  12
  13         "github.com/zyedidia/micro/internal/buffer"
  14         "github.com/zyedidia/micro/internal/config"
  15 )
  16
  17 func shouldContinue() bool {
  18         reader := bufio.NewReader(os.Stdin)
  19         fmt.Print("Continue [Y/n]: ")
  20         text, err := reader.ReadString('\n')
  21         if err != nil {
  22                 fmt.Println(err)
  23                 return false
  24         }
  25
  26         if len(text) <= 1 {
  27                 // default continue
  28                 return true
  29         }
  30
  31         return strings.ToLower(text)[0] == 'y'
  32 }
  33
  34 // CleanConfig performs cleanup in the user's configuration directory
  35 func CleanConfig() {
  36         fmt.Println("Cleaning your configuration directory at", config.ConfigDir)
  37         fmt.Printf("Please consider backing up %s before continuing\n", config.ConfigDir)
  38
  39         if !shouldContinue() {
  40                 fmt.Println("Stopping early")
  41                 return
  42         }
  43
  44         // detect unused options
  45         var unusedOptions []string
  46         defaultSettings := config.DefaultAllSettings()
  47         for k := range config.GlobalSettings {
  48                 if _, ok := defaultSettings[k]; !ok {
  49                         valid := false
  50                         for _, p := range config.Plugins {
  51                                 if strings.HasPrefix(k, p.Name+".") || k == p.Name {
  52                                         valid = true
  53                                 }
  54                         }
  55                         if !valid {
  56                                 unusedOptions = append(unusedOptions, k)
  57                         }
  58                 }
  59         }
  60
  61         if len(unusedOptions) > 0 {
  62                 fmt.Println("The following options are unused:")
  63
  64                 sort.Strings(unusedOptions)
  65
  66                 for _, s := range unusedOptions {
  67                         fmt.Printf("%s (value: %v)\n", s, config.GlobalSettings[s])
  68                 }
  69
  70                 fmt.Printf("These options will be removed from %s\n", filepath.Join(config.ConfigDir, "settings.json"))
  71
  72                 if shouldContinue() {
  73                         for _, s := range unusedOptions {
  74                                 delete(config.GlobalSettings, s)
  75                         }
  76
  77                         err := config.OverwriteSettings(filepath.Join(config.ConfigDir, "settings.json"))
  78                         if err != nil {
  79                                 fmt.Println("Error writing settings.json file: " + err.Error())
  80                         }
  81
  82                         fmt.Println("Removed unused options")
  83                         fmt.Print("\n\n")
  84                 }
  85         }
  86
  87         // detect incorrectly formatted buffer/ files
  88         files, err := ioutil.ReadDir(filepath.Join(config.ConfigDir, "buffers"))
  89         if err == nil {
  90                 var badFiles []string
  91                 var buffer buffer.SerializedBuffer
  92                 for _, f := range files {
  93                         fname := filepath.Join(config.ConfigDir, "buffers", f.Name())
  94                         file, err := os.Open(fname)
  95                         defer file.Close()
  96
  97                         decoder := gob.NewDecoder(file)
  98                         err = decoder.Decode(&buffer)
  99
 100                         if err != nil && f.Name() != "history" {
 101                                 badFiles = append(badFiles, fname)
 102                         }
 103                 }
 104
 105                 if len(badFiles) > 0 {
 106                         fmt.Printf("Detected %d files with an invalid format in %s\n", len(badFiles), filepath.Join(config.ConfigDir, "buffers"))
 107                         fmt.Println("These files store cursor and undo history.")
 108                         fmt.Printf("Removing badly formatted files in %s\n", filepath.Join(config.ConfigDir, "buffers"))
 109
 110                         if shouldContinue() {
 111                                 for _, f := range badFiles {
 112                                         err := os.Remove(f)
 113                                         if err != nil {
 114                                                 fmt.Println(err)
 115                                                 continue
 116                                         }
 117                                 }
 118
 119                                 fmt.Println("Removed badly formatted files")
 120                                 fmt.Print("\n\n")
 121                         }
 122                 }
 123         }
 124
 125         // detect plugins/ directory
 126         plugins := filepath.Join(config.ConfigDir, "plugins")
 127         if stat, err := os.Stat(plugins); err == nil && stat.IsDir() {
 128                 fmt.Printf("Found directory %s\n", plugins)
 129                 fmt.Printf("Plugins should now be stored in %s\n", filepath.Join(config.ConfigDir, "plug"))
 130                 fmt.Printf("Removing %s\n", plugins)
 131
 132                 if shouldContinue() {
 133                         os.RemoveAll(plugins)
 134                 }
 135
 136                 fmt.Print("\n\n")
 137         }
 138
 139         fmt.Println("Done cleaning")
 140 }