"fmt"
"io/ioutil"
"os"
+ "runtime"
- "github.com/gdamore/tcell"
- "github.com/gdamore/tcell/encoding"
"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/tcell"
+ "github.com/zyedidia/tcell/encoding"
)
const (
// Object to send messages and prompts to the user
messenger *Messenger
- // The default style
+ // The default highlighting style
+ // This simply defines the default foreground and background colors
defStyle tcell.Style
// Where the user's configuration is
// If $XDG_CONFIG_HOME is not set, it is ~/.config/micro
configDir string
- // Version is the version number.
+ // Version is the version number or commit hash
// This should be set by the linker
Version = "Unknown"
- // Is the help screen open
- helpOpen = false
+ // L is the lua state
+ // This is the VM that runs the plugins
+ L *lua.LState
+
+ // The list of views
+ views []*View
+ // This is the currently open view
+ // It's just an index to the view in the views array
+ mainView int
)
// LoadInput loads the file input for the editor
func LoadInput() (string, []byte, error) {
// There are a number of ways micro should start given its input
+
// 1. If it is given a file in os.Args, it should open that
// 2. If there is no input file and the input is not a terminal, that means
return filename, input, err
}
-// InitConfigDir finds the configuration directory for micro according to the
-// XDG spec.
+// InitConfigDir finds the configuration directory for micro according to the XDG spec.
// If no directory is found, it creates one.
func InitConfigDir() {
xdgHome := os.Getenv("XDG_CONFIG_HOME")
if xdgHome == "" {
+ // The user has not set $XDG_CONFIG_HOME so we should act like it was set to ~/.config
home, err := homedir.Dir()
if err != nil {
- TermMessage("Error finding your home directory\nCan't load syntax files")
+ TermMessage("Error finding your home directory\nCan't load config files")
return
}
xdgHome = home + "/.config"
configDir = xdgHome + "/micro"
if _, err := os.Stat(xdgHome); os.IsNotExist(err) {
+ // If the xdgHome doesn't exist we should create it
err = os.Mkdir(xdgHome, os.ModePerm)
if err != nil {
TermMessage("Error creating XDG_CONFIG_HOME directory: " + err.Error())
}
if _, err := os.Stat(configDir); os.IsNotExist(err) {
+ // If the micro specific config directory doesn't exist we should create that too
err = os.Mkdir(configDir, os.ModePerm)
if err != nil {
TermMessage("Error creating configuration directory: " + err.Error())
Background(tcell.ColorDefault)
// There may be another default style defined in the colorscheme
+ // In that case we should use that one
if style, ok := colorscheme["default"]; ok {
defStyle = style
}
screen.EnableMouse()
}
-// Redraw redraws the screen and the given view
-func Redraw(view *View) {
+// RedrawAll redraws everything -- all the views and the messenger
+func RedrawAll() {
screen.Clear()
- view.Display()
+ for _, v := range views {
+ v.Display()
+ }
messenger.Display()
screen.Show()
}
os.Exit(1)
}
+ L = lua.NewState()
+ defer L.Close()
+
+ // Some encoding stuff in case the user isn't using UTF-8
encoding.Register()
tcell.SetEncodingFallback(tcell.EncodingFallbackASCII)
InitConfigDir()
// Load the user's settings
InitSettings()
+ InitCommands()
InitBindings()
// Load the syntax files, including the colorscheme
LoadSyntaxFiles()
+ // Load the help files
+ LoadHelp()
buf := NewBuffer(string(input), filename)
// This is just so 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.Fini()
}()
messenger = new(Messenger)
- view := NewView(buf)
+ messenger.history = make(map[string][]string)
+ views = make([]*View, 1)
+ views[0] = NewView(buf)
+
+ L.SetGlobal("OS", luar.New(L, runtime.GOOS))
+ L.SetGlobal("views", luar.New(L, views))
+ L.SetGlobal("mainView", luar.New(L, mainView))
+ L.SetGlobal("messenger", luar.New(L, messenger))
+ L.SetGlobal("GetOption", luar.New(L, GetOption))
+ L.SetGlobal("AddOption", luar.New(L, AddOption))
+ L.SetGlobal("BindKey", luar.New(L, BindKey))
+ L.SetGlobal("MakeCommand", luar.New(L, MakeCommand))
+
+ LoadPlugins()
for {
// Display everything
- Redraw(view)
+ RedrawAll()
// Wait for the user's action
event := screen.PollEvent()
if searching {
- HandleSearchEvent(event, view)
+ // Since searching is done in real time, we need to redraw every time
+ // there is a new event in the search bar
+ HandleSearchEvent(event, views[mainView])
} else {
- // Check if we should quit
- switch e := event.(type) {
- case *tcell.EventKey:
- switch e.Key() {
- case tcell.KeyCtrlQ:
- // Make sure not to quit if there are unsaved changes
- if helpOpen {
- view.OpenBuffer(buf)
- helpOpen = false
- } else {
- if view.CanClose("Quit anyway? (yes, no, save) ") {
- screen.Fini()
- os.Exit(0)
- }
- }
- case tcell.KeyCtrlE:
- input, canceled := messenger.Prompt("> ")
- if !canceled {
- HandleCommand(input, view)
- }
- case tcell.KeyCtrlB:
- input, canceled := messenger.Prompt("$ ")
- if !canceled {
- HandleShellCommand(input, view, true)
- }
- case tcell.KeyCtrlG:
- if !helpOpen {
- helpBuffer := NewBuffer(helpTxt, "")
- helpBuffer.name = "Help"
- helpOpen = true
- view.OpenBuffer(helpBuffer)
- } else {
- view.OpenBuffer(buf)
- helpOpen = false
- }
- }
- }
-
// Send it to the view
- view.HandleEvent(event)
+ views[mainView].HandleEvent(event)
}
}
}
projects / micro.git / blobdiff