]> git.lizzy.rs Git - micro.git/blobdiff - cmd/micro/micro.go
Fix v2 import path for go mod
[micro.git] / cmd / micro / micro.go
index 9799ef70f2870289a7fbe6befa67f3f6c52f0702..45e0e25bffbff332bedeea4cbaef1c8d03710f3a 100644 (file)
@@ -5,15 +5,20 @@ import (
        "fmt"
        "io/ioutil"
        "os"
-       "strings"
+       "regexp"
+       "runtime"
+       "sort"
+       "time"
 
        "github.com/go-errors/errors"
        isatty "github.com/mattn/go-isatty"
-       "github.com/zyedidia/micro/internal/action"
-       "github.com/zyedidia/micro/internal/buffer"
-       "github.com/zyedidia/micro/internal/config"
-       "github.com/zyedidia/micro/internal/screen"
-       "github.com/zyedidia/micro/internal/util"
+       lua "github.com/yuin/gopher-lua"
+       "github.com/zyedidia/micro/v2/internal/action"
+       "github.com/zyedidia/micro/v2/internal/buffer"
+       "github.com/zyedidia/micro/v2/internal/config"
+       "github.com/zyedidia/micro/v2/internal/screen"
+       "github.com/zyedidia/micro/v2/internal/shell"
+       "github.com/zyedidia/micro/v2/internal/util"
        "github.com/zyedidia/tcell"
 )
 
@@ -24,26 +29,45 @@ var (
 
        // Command line flags
        flagVersion   = flag.Bool("version", false, "Show the version number and information")
-       flagStartPos  = flag.String("startpos", "", "LINE,COL to start the cursor at when opening a buffer.")
        flagConfigDir = flag.String("config-dir", "", "Specify a custom location for the configuration directory")
        flagOptions   = flag.Bool("options", false, "Show all option help")
+       flagDebug     = flag.Bool("debug", false, "Enable debug mode (prints debug info to ./log.txt)")
+       flagPlugin    = flag.String("plugin", "", "Plugin command")
+       flagClean     = flag.Bool("clean", false, "Clean configuration directory")
        optionFlags   map[string]*string
 )
 
 func InitFlags() {
        flag.Usage = func() {
                fmt.Println("Usage: micro [OPTIONS] [FILE]...")
+               fmt.Println("-clean")
+               fmt.Println("    \tCleans the configuration directory")
                fmt.Println("-config-dir dir")
                fmt.Println("    \tSpecify a custom location for the configuration directory")
-               fmt.Println("-startpos LINE,COL")
+               fmt.Println("[FILE]:LINE:COL")
                fmt.Println("+LINE:COL")
                fmt.Println("    \tSpecify a line and column to start the cursor at when opening a buffer")
-               fmt.Println("    \tThis can also be done by opening file:LINE:COL")
                fmt.Println("-options")
                fmt.Println("    \tShow all option help")
+               fmt.Println("-debug")
+               fmt.Println("    \tEnable debug mode (enables logging to ./log.txt)")
                fmt.Println("-version")
                fmt.Println("    \tShow the version number and information")
 
+               fmt.Print("\nMicro's plugin's can be managed at the command line with the following commands.\n")
+               fmt.Println("-plugin install [PLUGIN]...")
+               fmt.Println("    \tInstall plugin(s)")
+               fmt.Println("-plugin remove [PLUGIN]...")
+               fmt.Println("    \tRemove plugin(s)")
+               fmt.Println("-plugin update [PLUGIN]...")
+               fmt.Println("    \tUpdate plugin(s) (if no argument is given, updates all plugins)")
+               fmt.Println("-plugin search [PLUGIN]...")
+               fmt.Println("    \tSearch for a plugin")
+               fmt.Println("-plugin list")
+               fmt.Println("    \tList installed plugins")
+               fmt.Println("-plugin available")
+               fmt.Println("    \tList available plugins")
+
                fmt.Print("\nMicro's options can also be set via command line arguments for quick\nadjustments. For real configuration, please use the settings.json\nfile (see 'help options').\n\n")
                fmt.Println("-option value")
                fmt.Println("    \tSet `option` to `value` for this session")
@@ -53,8 +77,8 @@ func InitFlags() {
 
        optionFlags = make(map[string]*string)
 
-       for k, v := range config.DefaultGlobalSettings() {
-               optionFlags[k] = flag.String(k, "", fmt.Sprintf("The %s option. Default value: '%v'", k, v))
+       for k, v := range config.DefaultAllSettings() {
+               optionFlags[k] = flag.String(k, "", fmt.Sprintf("The %s option. Default value: '%v'.", k, v))
        }
 
        flag.Parse()
@@ -69,12 +93,40 @@ func InitFlags() {
 
        if *flagOptions {
                // If -options was passed
-               for k, v := range config.DefaultGlobalSettings() {
+               var keys []string
+               m := config.DefaultAllSettings()
+               for k := range m {
+                       keys = append(keys, k)
+               }
+               sort.Strings(keys)
+               for _, k := range keys {
+                       v := m[k]
                        fmt.Printf("-%s value\n", k)
                        fmt.Printf("    \tDefault value: '%v'\n", v)
                }
                os.Exit(0)
        }
+
+       if util.Debug == "OFF" && *flagDebug {
+               util.Debug = "ON"
+       }
+}
+
+// DoPluginFlags parses and executes any flags that require LoadAllPlugins (-plugin and -clean)
+func DoPluginFlags() {
+       if *flagClean || *flagPlugin != "" {
+               config.LoadAllPlugins()
+
+               if *flagPlugin != "" {
+                       args := flag.Args()
+
+                       config.PluginCommand(os.Stdout, *flagPlugin, args)
+               } else if *flagClean {
+                       CleanConfig()
+               }
+
+               os.Exit(0)
+       }
 }
 
 // LoadInput determines which files should be loaded into buffers
@@ -97,21 +149,32 @@ func LoadInput() []*buffer.Buffer {
        args := flag.Args()
        buffers := make([]*buffer.Buffer, 0, len(args))
 
-       if len(args) > 0 {
-               // Option 1
-               // We go through each file and load it
-               for i := 0; i < len(args); i++ {
-                       if strings.HasPrefix(args[i], "+") {
-                               if strings.Contains(args[i], ":") {
-                                       split := strings.Split(args[i], ":")
-                                       *flagStartPos = split[0][1:] + "," + split[1]
-                               } else {
-                                       *flagStartPos = args[i][1:] + ",0"
-                               }
-                               continue
+       btype := buffer.BTDefault
+       if !isatty.IsTerminal(os.Stdout.Fd()) {
+               btype = buffer.BTStdout
+       }
+
+       files := make([]string, 0, len(args))
+       flagStartPos := ""
+       flagr := regexp.MustCompile(`^\+\d+(:\d+)?$`)
+       for _, a := range args {
+               if flagr.MatchString(a) {
+                       flagStartPos = a[1:]
+               } else {
+                       if flagStartPos != "" {
+                               files = append(files, a+":"+flagStartPos)
+                               flagStartPos = ""
+                       } else {
+                               files = append(files, a)
                        }
+               }
+       }
 
-                       buf, err := buffer.NewBufferFromFile(args[i], buffer.BTDefault)
+       if len(files) > 0 {
+               // Option 1
+               // We go through each file and load it
+               for i := 0; i < len(files); i++ {
+                       buf, err := buffer.NewBufferFromFile(files[i], btype)
                        if err != nil {
                                screen.TermMessage(err)
                                continue
@@ -128,22 +191,34 @@ func LoadInput() []*buffer.Buffer {
                        screen.TermMessage("Error reading from stdin: ", err)
                        input = []byte{}
                }
-               buffers = append(buffers, buffer.NewBufferFromString(string(input), filename, buffer.BTDefault))
+               buffers = append(buffers, buffer.NewBufferFromString(string(input), filename, btype))
        } else {
                // Option 3, just open an empty buffer
-               buffers = append(buffers, buffer.NewBufferFromString(string(input), filename, buffer.BTDefault))
+               buffers = append(buffers, buffer.NewBufferFromString(string(input), filename, btype))
        }
 
        return buffers
 }
 
 func main() {
-       var err error
+       defer func() {
+               if util.Stdout.Len() > 0 {
+                       fmt.Fprint(os.Stdout, util.Stdout.String())
+               }
+               os.Exit(0)
+       }()
 
-       InitLog()
+       // runtime.SetCPUProfileRate(400)
+       // f, _ := os.Create("micro.prof")
+       // pprof.StartCPUProfile(f)
+       // defer pprof.StopCPUProfile()
+
+       var err error
 
        InitFlags()
 
+       InitLog()
+
        err = config.InitConfigDir(*flagConfigDir)
        if err != nil {
                screen.TermMessage(err)
@@ -159,7 +234,7 @@ func main() {
        // flag options
        for k, v := range optionFlags {
                if *v != "" {
-                       nativeValue, err := config.GetNativeValue(k, config.GlobalSettings[k], *v)
+                       nativeValue, err := config.GetNativeValue(k, config.DefaultAllSettings()[k], *v)
                        if err != nil {
                                screen.TermMessage(err)
                                continue
@@ -168,42 +243,57 @@ func main() {
                }
        }
 
-       action.InitBindings()
-       action.InitCommands()
-
-       err = config.InitColorscheme()
-       if err != nil {
-               screen.TermMessage(err)
-       }
-
-       config.LoadAllPlugins()
-       err = config.RunPluginFn("init")
-       if err != nil {
-               screen.TermMessage(err)
-       }
+       DoPluginFlags()
 
        screen.Init()
 
-       // If we have an error, we can exit cleanly and not completely
-       // mess up the terminal being worked in
-       // In other words we need to shut down tcell before the program crashes
        defer func() {
                if err := recover(); err != nil {
                        screen.Screen.Fini()
                        fmt.Println("Micro encountered an error:", err)
+                       // backup all open buffers
+                       for _, b := range buffer.OpenBuffers {
+                               b.Backup(false)
+                       }
                        // Print the stack trace too
                        fmt.Print(errors.Wrap(err, 2).ErrorStack())
                        os.Exit(1)
                }
        }()
 
+       err = config.LoadAllPlugins()
+       if err != nil {
+               screen.TermMessage(err)
+       }
+
+       action.InitBindings()
+       action.InitCommands()
+
+       err = config.InitColorscheme()
+       if err != nil {
+               screen.TermMessage(err)
+       }
+
        b := LoadInput()
+
+       if len(b) == 0 {
+               // No buffers to open
+               screen.Screen.Fini()
+               runtime.Goexit()
+       }
+
        action.InitTabs(b)
        action.InitGlobals()
 
+       err = config.RunPluginFn("init")
+       if err != nil {
+               screen.TermMessage(err)
+       }
+
+       events = make(chan tcell.Event)
+
        // Here is the event loop which runs in a separate thread
        go func() {
-               events = make(chan tcell.Event)
                for {
                        screen.Lock()
                        e := screen.Screen.PollEvent()
@@ -214,32 +304,70 @@ func main() {
                }
        }()
 
-       for {
-               // Display everything
-               screen.Screen.Fill(' ', config.DefStyle)
-               screen.Screen.HideCursor()
-               action.Tabs.Display()
-               for _, ep := range action.MainTab().Panes {
-                       ep.Display()
-               }
-               action.MainTab().Display()
-               action.InfoBar.Display()
-               screen.Screen.Show()
+       // clear the drawchan so we don't redraw excessively
+       // if someone requested a redraw before we started displaying
+       for len(screen.DrawChan()) > 0 {
+               <-screen.DrawChan()
+       }
 
-               var event tcell.Event
+       // wait for initial resize event
+       select {
+       case event := <-events:
+               action.Tabs.HandleEvent(event)
+       case <-time.After(10 * time.Millisecond):
+               // time out after 10ms
+       }
 
-               // Check for new events
-               select {
-               case event = <-events:
-               case <-screen.DrawChan:
-               }
+       // Since this loop is very slow (waits for user input every time) it's
+       // okay to be inefficient and run it via a function every time
+       // We do this so we can recover from panics without crashing the editor
+       for {
+               DoEvent()
+       }
+}
+
+// DoEvent runs the main action loop of the editor
+func DoEvent() {
+       var event tcell.Event
 
-               if event != nil {
-                       if action.InfoBar.HasPrompt {
-                               action.InfoBar.HandleEvent(event)
+       // recover from errors without crashing the editor
+       defer func() {
+               if err := recover(); err != nil {
+                       if e, ok := err.(*lua.ApiError); ok {
+                               screen.TermMessage("Lua API error:", e)
                        } else {
-                               action.Tabs.HandleEvent(event)
+                               screen.TermMessage("Micro encountered an error:", errors.Wrap(err, 2).ErrorStack(), "\nIf you can reproduce this error, please report it at https://github.com/zyedidia/micro/issues")
                        }
                }
+       }()
+       // Display everything
+       screen.Screen.Fill(' ', config.DefStyle)
+       screen.Screen.HideCursor()
+       action.Tabs.Display()
+       for _, ep := range action.MainTab().Panes {
+               ep.Display()
+       }
+       action.MainTab().Display()
+       action.InfoBar.Display()
+       screen.Screen.Show()
+
+       // Check for new events
+       select {
+       case f := <-shell.Jobs:
+               // If a new job has finished while running in the background we should execute the callback
+               f.Function(f.Output, f.Args)
+       case <-config.Autosave:
+               for _, b := range buffer.OpenBuffers {
+                       b.Save()
+               }
+       case <-shell.CloseTerms:
+       case event = <-events:
+       case <-screen.DrawChan():
+       }
+
+       if action.InfoBar.HasPrompt {
+               action.InfoBar.HandleEvent(event)
+       } else {
+               action.Tabs.HandleEvent(event)
        }
 }