Add savehistory option

[micro.git] / cmd / micro / micro.go

diff --git a/cmd/micro/micro.go b/cmd/micro/micro.go
index f2c1e4668aca7832d09f4dca776ca0faa9eb2db4..35d1721d88f54c4c1cc24138788da0367955c01c 100644 (file)
--- a/cmd/micro/micro.go
+++ b/cmd/micro/micro.go
@@ -21,8 +21,6 @@ import (
 )
 
 const (
-       synLinesUp           = 75  // How many lines up to look to do syntax highlighting
-       synLinesDown         = 75  // How many lines down to look to do syntax highlighting
        doubleClickThreshold = 400 // How many milliseconds to wait before a second click is not a double click
        undoThreshold        = 500 // If two events are less than n milliseconds apart, undo both of them
        autosaveTime         = 8   // Number of seconds to wait before autosaving
@@ -50,10 +48,6 @@ var (
        CommitHash  = "Unknown"
        CompileDate = "Unknown"
 
-       // L is the lua state
-       // This is the VM that runs the plugins
-       L *lua.LState
-
        // The list of views
        tabs []*Tab
        // This is the currently open tab
@@ -149,6 +143,15 @@ func InitConfigDir() {
        }
        configDir = xdgHome + "/micro"
 
+       if len(*flagConfigDir) > 0 {
+               if _, err := os.Stat(*flagConfigDir); os.IsNotExist(err) {
+                       TermMessage("Error: " + *flagConfigDir + " does not exist. Defaulting to " + configDir + ".")
+               } else {
+                       configDir = *flagConfigDir
+                       return
+               }
+       }
+
        if _, err := os.Stat(xdgHome); os.IsNotExist(err) {
                // If the xdgHome doesn't exist we should create it
                err = os.Mkdir(xdgHome, os.ModePerm)
@@ -183,6 +186,10 @@ func InitScreen() {
        screen, err = tcell.NewScreen()
        if err != nil {
                fmt.Println(err)
+               if err == tcell.ErrTermNotFound {
+                       fmt.Println("Micro does not recognize your terminal:", oldTerm)
+                       fmt.Println("Please go to https://github.com/zyedidia/mkinfo to read about how to fix this problem (it should be easy to fix).")
+               }
                os.Exit(1)
        }
        if err = screen.Init(); err != nil {
@@ -195,8 +202,11 @@ func InitScreen() {
                os.Setenv("TERM", oldTerm)
        }
 
+       if GetGlobalOption("mouse").(bool) {
+               screen.EnableMouse()
+       }
+
        screen.SetStyle(defStyle)
-       screen.EnableMouse()
 }
 
 // RedrawAll redraws everything -- all the views and the messenger
@@ -215,6 +225,9 @@ func RedrawAll() {
        }
        DisplayTabs()
        messenger.Display()
+       if globalSettings["keymenu"].(bool) {
+               DisplayKeyMenu()
+       }
        screen.Show()
 }
 
@@ -243,12 +256,26 @@ func LoadAll() {
 // Passing -version as a flag will have micro print out the version number
 var flagVersion = flag.Bool("version", false, "Show the version number and information")
 var flagStartPos = flag.String("startpos", "", "LINE,COL to start the cursor at when opening a buffer.")
+var flagConfigDir = flag.String("config-dir", "", "Specify a custom location for the configuration directory")
+var flagOptions = flag.Bool("options", false, "Show all option help")
 
 func main() {
        flag.Usage = func() {
                fmt.Println("Usage: micro [OPTIONS] [FILE]...")
-               fmt.Print("Micro's options can be set via command line arguments for quick adjustments. For real configuration, please use the bindings.json file (see 'help options').\n\n")
-               flag.PrintDefaults()
+               fmt.Println("-config-dir dir")
+               fmt.Println("    \tSpecify a custom location for the configuration directory")
+               fmt.Println("-startpos LINE,COL")
+               fmt.Println("    \tSpecify a line and column to start the cursor at when opening a buffer")
+               fmt.Println("-options")
+               fmt.Println("    \tShow all option help")
+               fmt.Println("-version")
+               fmt.Println("    \tShow the version number and information")
+
+               fmt.Print("\nMicro's options can also be set via command line arguments for quick\nadjustments. For real configuration, please use the bindings.json\nfile (see 'help options').\n\n")
+               fmt.Println("-option value")
+               fmt.Println("    \tSet `option` to `value` for this session")
+               fmt.Println("    \tFor example: `micro -syntax off file.c`")
+               fmt.Println("\nUse `micro -options` to see the full list of configuration options")
        }
 
        optionFlags := make(map[string]*string)
@@ -267,6 +294,15 @@ func main() {
                os.Exit(0)
        }
 
+       if *flagOptions {
+               // If -options was passed
+               for k, v := range DefaultGlobalSettings() {
+                       fmt.Printf("-%s value\n", k)
+                       fmt.Printf("    \tThe %s option. Default value: '%v'\n", k, v)
+               }
+               os.Exit(0)
+       }
+
        // Start the Lua VM for running plugins
        L = lua.NewState()
        defer L.Close()
@@ -306,8 +342,7 @@ func main() {
        // Create a new messenger
        // This is used for sending the user messages in the bottom of the editor
        messenger = new(Messenger)
-       messenger.history = make(map[string][]string)
-       InitColorscheme()
+       messenger.LoadHistory()
 
        // Now we load the input
        buffers := LoadInput()
@@ -361,6 +396,7 @@ func main() {
        L.SetGlobal("Loc", luar.New(L, func(x, y int) Loc {
                return Loc{x, y}
        }))
+       L.SetGlobal("WorkingDirectory", luar.New(L, os.Getwd))
        L.SetGlobal("JoinPaths", luar.New(L, filepath.Join))
        L.SetGlobal("DirectoryName", luar.New(L, filepath.Dir))
        L.SetGlobal("configDir", luar.New(L, configDir))
@@ -381,6 +417,9 @@ func main() {
        L.SetGlobal("AddRuntimeFilesFromDirectory", luar.New(L, PluginAddRuntimeFilesFromDirectory))
        L.SetGlobal("AddRuntimeFileFromMemory", luar.New(L, PluginAddRuntimeFileFromMemory))
 
+       // Access to Go stdlib
+       L.SetGlobal("import", luar.New(L, Import))
+
        jobs = make(chan JobFunction, 100)
        events = make(chan tcell.Event, 100)
        autosave = make(chan bool)
@@ -399,10 +438,14 @@ func main() {
                }
        }
 
+       InitColorscheme()
+
        // Here is the event loop which runs in a separate thread
        go func() {
                for {
-                       events <- screen.PollEvent()
+                       if screen != nil {
+                               events <- screen.PollEvent()
+                       }
                }
        }()