]> git.lizzy.rs Git - micro.git/blobdiff - cmd/micro/micro.go
Add savehistory option
[micro.git] / cmd / micro / micro.go
index 1ac7d5a03bd7f365e3a70536ee8615764af47d59..35d1721d88f54c4c1cc24138788da0367955c01c 100644 (file)
@@ -11,18 +11,16 @@ import (
        "time"
 
        "github.com/go-errors/errors"
-       "github.com/layeh/gopher-luar"
        "github.com/mattn/go-isatty"
        "github.com/mitchellh/go-homedir"
        "github.com/yuin/gopher-lua"
        "github.com/zyedidia/clipboard"
        "github.com/zyedidia/tcell"
        "github.com/zyedidia/tcell/encoding"
+       "layeh.com/gopher-luar"
 )
 
 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
@@ -46,14 +44,10 @@ var (
 
        // Version is the version number or commit hash
        // These variables should be set by the linker when compiling
-       Version     = "Unknown"
+       Version     = "0.0.0-unknown"
        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
@@ -84,26 +78,37 @@ func LoadInput() []*Buffer {
        var filename string
        var input []byte
        var err error
-       var buffers []*Buffer
+       args := flag.Args()
+       buffers := make([]*Buffer, 0, len(args))
 
-       if len(flag.Args()) > 0 {
+       if len(args) > 0 {
                // Option 1
                // We go through each file and load it
-               for i := 0; i < len(flag.Args()); i++ {
-                       filename = flag.Args()[i]
+               for i := 0; i < len(args); i++ {
+                       filename = args[i]
 
                        // Check that the file exists
+                       var input *os.File
                        if _, e := os.Stat(filename); e == nil {
                                // If it exists we load it into a buffer
-                               input, err = ioutil.ReadFile(filename)
+                               input, err = os.Open(filename)
+                               stat, _ := input.Stat()
+                               defer input.Close()
                                if err != nil {
                                        TermMessage(err)
-                                       input = []byte{}
-                                       filename = ""
+                                       continue
+                               }
+                               if stat.IsDir() {
+                                       TermMessage("Cannot read", filename, "because it is a directory")
+                                       continue
                                }
                        }
                        // If the file didn't exist, input will be empty, and we'll open an empty buffer
-                       buffers = append(buffers, NewBuffer(input, filename))
+                       if input != nil {
+                               buffers = append(buffers, NewBuffer(input, FSize(input), filename))
+                       } else {
+                               buffers = append(buffers, NewBufferFromString("", filename))
+                       }
                }
        } else if !isatty.IsTerminal(os.Stdin.Fd()) {
                // Option 2
@@ -114,10 +119,10 @@ func LoadInput() []*Buffer {
                        TermMessage("Error reading from stdin: ", err)
                        input = []byte{}
                }
-               buffers = append(buffers, NewBuffer(input, filename))
+               buffers = append(buffers, NewBufferFromString(string(input), filename))
        } else {
                // Option 3, just open an empty buffer
-               buffers = append(buffers, NewBuffer(input, filename))
+               buffers = append(buffers, NewBufferFromString(string(input), filename))
        }
 
        return buffers
@@ -138,6 +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)
@@ -172,6 +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 {
@@ -184,18 +202,32 @@ 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
 func RedrawAll() {
        messenger.Clear()
+
+       w, h := screen.Size()
+       for x := 0; x < w; x++ {
+               for y := 0; y < h; y++ {
+                       screen.SetContent(x, y, ' ', nil, defStyle)
+               }
+       }
+
        for _, v := range tabs[curTab].views {
                v.Display()
        }
        DisplayTabs()
        messenger.Display()
+       if globalSettings["keymenu"].(bool) {
+               DisplayKeyMenu()
+       }
        screen.Show()
 }
 
@@ -212,14 +244,11 @@ func LoadAll() {
        InitCommands()
        InitBindings()
 
-       LoadSyntaxFiles()
+       InitColorscheme()
 
        for _, tab := range tabs {
                for _, v := range tab.views {
                        v.Buf.UpdateRules()
-                       if v.Buf.Settings["syntax"].(bool) {
-                               v.matches = Match(v)
-                       }
                }
        }
 }
@@ -227,12 +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)
@@ -251,6 +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()
@@ -259,7 +311,17 @@ func main() {
        encoding.Register()
        tcell.SetEncodingFallback(tcell.EncodingFallbackASCII)
 
-       LoadAll()
+       // Find the user's configuration directory (probably $XDG_CONFIG_HOME/micro)
+       InitConfigDir()
+
+       // Build a list of available Extensions (Syntax, Colorscheme etc.)
+       InitRuntimeFiles()
+
+       // Load the user's settings
+       InitGlobalSettings()
+
+       InitCommands()
+       InitBindings()
 
        // Start the screen
        InitScreen()
@@ -280,10 +342,15 @@ 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)
+       messenger.LoadHistory()
 
        // Now we load the input
        buffers := LoadInput()
+       if len(buffers) == 0 {
+               screen.Fini()
+               os.Exit(1)
+       }
+
        for _, buf := range buffers {
                // For each buffer we create a new tab and place the view in that tab
                tab := NewTabFromView(NewView(buf))
@@ -292,9 +359,6 @@ func main() {
                for _, t := range tabs {
                        for _, v := range t.views {
                                v.Center(false)
-                               if globalSettings["syntax"].(bool) {
-                                       v.matches = Match(v)
-                               }
                        }
 
                        t.Resize()
@@ -325,19 +389,24 @@ func main() {
        L.SetGlobal("HandleShellCommand", luar.New(L, HandleShellCommand))
        L.SetGlobal("GetLeadingWhitespace", luar.New(L, GetLeadingWhitespace))
        L.SetGlobal("MakeCompletion", luar.New(L, MakeCompletion))
-       L.SetGlobal("NewBuffer", luar.New(L, NewBuffer))
+       L.SetGlobal("NewBuffer", luar.New(L, NewBufferFromString))
        L.SetGlobal("RuneStr", luar.New(L, func(r rune) string {
                return string(r)
        }))
        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))
        L.SetGlobal("Reload", luar.New(L, LoadAll))
+       L.SetGlobal("ByteOffset", luar.New(L, ByteOffset))
+       L.SetGlobal("ToCharPos", luar.New(L, ToCharPos))
 
        // Used for asynchronous jobs
        L.SetGlobal("JobStart", luar.New(L, JobStart))
+       L.SetGlobal("JobSpawn", luar.New(L, JobSpawn))
        L.SetGlobal("JobSend", luar.New(L, JobSend))
        L.SetGlobal("JobStop", luar.New(L, JobStop))
 
@@ -346,6 +415,10 @@ func main() {
        L.SetGlobal("ListRuntimeFiles", luar.New(L, PluginListRuntimeFiles))
        L.SetGlobal("AddRuntimeFile", luar.New(L, PluginAddRuntimeFile))
        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)
@@ -353,30 +426,26 @@ func main() {
 
        LoadPlugins()
 
-       // Load the syntax files, including the colorscheme
-       LoadSyntaxFiles()
-
        for _, t := range tabs {
                for _, v := range t.views {
-                       v.Buf.FindFileType()
-                       v.Buf.UpdateRules()
-                       for _, pl := range loadedPlugins {
+                       for pl := range loadedPlugins {
                                _, err := Call(pl+".onViewOpen", v)
                                if err != nil && !strings.HasPrefix(err.Error(), "function does not exist") {
                                        TermMessage(err)
                                        continue
                                }
                        }
-                       if v.Buf.Settings["syntax"].(bool) {
-                               v.matches = Match(v)
-                       }
                }
        }
 
+       InitColorscheme()
+
        // Here is the event loop which runs in a separate thread
        go func() {
                for {
-                       events <- screen.PollEvent()
+                       if screen != nil {
+                               events <- screen.PollEvent()
+                       }
                }
        }()
 
@@ -408,26 +477,32 @@ func main() {
 
                for event != nil {
                        switch e := event.(type) {
+                       case *tcell.EventResize:
+                               for _, t := range tabs {
+                                       t.Resize()
+                               }
                        case *tcell.EventMouse:
-                               if e.Buttons() == tcell.Button1 {
-                                       // If the user left clicked we check a couple things
-                                       _, h := screen.Size()
-                                       x, y := e.Position()
-                                       if y == h-1 && messenger.message != "" && globalSettings["infobar"].(bool) {
-                                               // If the user clicked in the bottom bar, and there is a message down there
-                                               // we copy it to the clipboard.
-                                               // Often error messages are displayed down there so it can be useful to easily
-                                               // copy the message
-                                               clipboard.WriteAll(messenger.message, "primary")
-                                               break
-                                       }
+                               if !searching {
+                                       if e.Buttons() == tcell.Button1 {
+                                               // If the user left clicked we check a couple things
+                                               _, h := screen.Size()
+                                               x, y := e.Position()
+                                               if y == h-1 && messenger.message != "" && globalSettings["infobar"].(bool) {
+                                                       // If the user clicked in the bottom bar, and there is a message down there
+                                                       // we copy it to the clipboard.
+                                                       // Often error messages are displayed down there so it can be useful to easily
+                                                       // copy the message
+                                                       clipboard.WriteAll(messenger.message, "primary")
+                                                       break
+                                               }
 
-                                       if CurView().mouseReleased {
-                                               // We loop through each view in the current tab and make sure the current view
-                                               // is the one being clicked in
-                                               for _, v := range tabs[curTab].views {
-                                                       if x >= v.x && x < v.x+v.width && y >= v.y && y < v.y+v.height {
-                                                               tabs[curTab].curView = v.Num
+                                               if CurView().mouseReleased {
+                                                       // We loop through each view in the current tab and make sure the current view
+                                                       // is the one being clicked in
+                                                       for _, v := range tabs[curTab].views {
+                                                               if x >= v.x && x < v.x+v.Width && y >= v.y && y < v.y+v.Height {
+                                                                       tabs[curTab].CurView = v.Num
+                                                               }
                                                        }
                                                }
                                        }
@@ -455,7 +530,6 @@ func main() {
                        default:
                                event = nil
                        }
-
                }
        }
 }