Add infobar

cmd/micro/info/history.go

@@ -0,0 +1,61 @@
+package info
+
+import (
+	"encoding/gob"
+	"os"
+
+	"github.com/zyedidia/micro/cmd/micro/config"
+)
+
+// LoadHistory attempts to load user history from configDir/buffers/history
+// into the history map
+// The savehistory option must be on
+func (i *Bar) LoadHistory() {
+	if config.GetGlobalOption("savehistory").(bool) {
+		file, err := os.Open(config.ConfigDir + "/buffers/history")
+		defer file.Close()
+		var decodedMap map[string][]string
+		if err == nil {
+			decoder := gob.NewDecoder(file)
+			err = decoder.Decode(&decodedMap)
+
+			if err != nil {
+				i.Error("Error loading history:", err)
+				return
+			}
+		}
+
+		if decodedMap != nil {
+			i.History = decodedMap
+		} else {
+			i.History = make(map[string][]string)
+		}
+	} else {
+		i.History = make(map[string][]string)
+	}
+}
+
+// SaveHistory saves the user's command history to configDir/buffers/history
+// only if the savehistory option is on
+func (i *Bar) SaveHistory() {
+	if config.GetGlobalOption("savehistory").(bool) {
+		// Don't save history past 100
+		for k, v := range i.History {
+			if len(v) > 100 {
+				i.History[k] = v[len(i.History[k])-100:]
+			}
+		}
+
+		file, err := os.Create(config.ConfigDir + "/buffers/history")
+		defer file.Close()
+		if err == nil {
+			encoder := gob.NewEncoder(file)
+
+			err = encoder.Encode(i.History)
+			if err != nil {
+				i.Error("Error saving history:", err)
+				return
+			}
+		}
+	}
+}