cmd/micro/info/history.go

   1 package info
   2
   3 import (
   4         "encoding/gob"
   5         "os"
   6
   7         "github.com/zyedidia/micro/cmd/micro/config"
   8 )
   9
  10 // LoadHistory attempts to load user history from configDir/buffers/history
  11 // into the history map
  12 // The savehistory option must be on
  13 func (i *InfoBuf) LoadHistory() {
  14         if config.GetGlobalOption("savehistory").(bool) {
  15                 file, err := os.Open(config.ConfigDir + "/buffers/history")
  16                 defer file.Close()
  17                 var decodedMap map[string][]string
  18                 if err == nil {
  19                         decoder := gob.NewDecoder(file)
  20                         err = decoder.Decode(&decodedMap)
  21
  22                         if err != nil {
  23                                 i.Error("Error loading history:", err)
  24                                 return
  25                         }
  26                 }
  27
  28                 if decodedMap != nil {
  29                         i.History = decodedMap
  30                 } else {
  31                         i.History = make(map[string][]string)
  32                 }
  33         } else {
  34                 i.History = make(map[string][]string)
  35         }
  36 }
  37
  38 // SaveHistory saves the user's command history to configDir/buffers/history
  39 // only if the savehistory option is on
  40 func (i *InfoBuf) SaveHistory() {
  41         if config.GetGlobalOption("savehistory").(bool) {
  42                 // Don't save history past 100
  43                 for k, v := range i.History {
  44                         if len(v) > 100 {
  45                                 i.History[k] = v[len(i.History[k])-100:]
  46                         }
  47                 }
  48
  49                 file, err := os.Create(config.ConfigDir + "/buffers/history")
  50                 defer file.Close()
  51                 if err == nil {
  52                         encoder := gob.NewEncoder(file)
  53
  54                         err = encoder.Encode(i.History)
  55                         if err != nil {
  56                                 i.Error("Error saving history:", err)
  57                                 return
  58                         }
  59                 }
  60         }
  61 }