mirror of
https://github.com/zyedidia/micro.git
synced 2026-03-03 03:10:22 +09:00
582 lines
15 KiB
Go
582 lines
15 KiB
Go
package main
|
|
|
|
import (
|
|
"encoding/json"
|
|
"io/ioutil"
|
|
"os"
|
|
"strings"
|
|
|
|
"github.com/atotto/clipboard"
|
|
"github.com/gdamore/tcell"
|
|
"github.com/mitchellh/go-homedir"
|
|
)
|
|
|
|
var bindings map[tcell.Key]func(*View) bool
|
|
|
|
// InitBindings initializes the keybindings for micro
|
|
func InitBindings() {
|
|
bindings = make(map[tcell.Key]func(*View) bool)
|
|
|
|
actions := map[string]func(*View) bool{
|
|
"CursorUp": CursorUp,
|
|
"CursorDown": CursorDown,
|
|
"CursorLeft": CursorLeft,
|
|
"CursorRight": CursorRight,
|
|
"InsertEnter": InsertEnter,
|
|
"InsertSpace": InsertSpace,
|
|
"Backspace": Backspace,
|
|
"Delete": Delete,
|
|
"InsertTab": InsertTab,
|
|
"Save": Save,
|
|
"Find": Find,
|
|
"FindNext": FindNext,
|
|
"FindPrevious": FindPrevious,
|
|
"Undo": Undo,
|
|
"Redo": Redo,
|
|
"Copy": Copy,
|
|
"Cut": Cut,
|
|
"Paste": Paste,
|
|
"SelectAll": SelectAll,
|
|
"OpenFile": OpenFile,
|
|
"Beginning": Beginning,
|
|
"End": End,
|
|
"PageUp": PageUp,
|
|
"PageDown": PageDown,
|
|
"HalfPageUp": HalfPageUp,
|
|
"HalfPageDown": HalfPageDown,
|
|
"ToggleRuler": ToggleRuler,
|
|
}
|
|
|
|
keys := map[string]tcell.Key{
|
|
"Up": tcell.KeyUp,
|
|
"Down": tcell.KeyDown,
|
|
"Right": tcell.KeyRight,
|
|
"Left": tcell.KeyLeft,
|
|
"UpLeft": tcell.KeyUpLeft,
|
|
"UpRight": tcell.KeyUpRight,
|
|
"DownLeft": tcell.KeyDownLeft,
|
|
"DownRight": tcell.KeyDownRight,
|
|
"Center": tcell.KeyCenter,
|
|
"PgUp": tcell.KeyPgUp,
|
|
"PgDn": tcell.KeyPgDn,
|
|
"Home": tcell.KeyHome,
|
|
"End": tcell.KeyEnd,
|
|
"Insert": tcell.KeyInsert,
|
|
"Delete": tcell.KeyDelete,
|
|
"Help": tcell.KeyHelp,
|
|
"Exit": tcell.KeyExit,
|
|
"Clear": tcell.KeyClear,
|
|
"Cancel": tcell.KeyCancel,
|
|
"Print": tcell.KeyPrint,
|
|
"Pause": tcell.KeyPause,
|
|
"Backtab": tcell.KeyBacktab,
|
|
"F1": tcell.KeyF1,
|
|
"F2": tcell.KeyF2,
|
|
"F3": tcell.KeyF3,
|
|
"F4": tcell.KeyF4,
|
|
"F5": tcell.KeyF5,
|
|
"F6": tcell.KeyF6,
|
|
"F7": tcell.KeyF7,
|
|
"F8": tcell.KeyF8,
|
|
"F9": tcell.KeyF9,
|
|
"F10": tcell.KeyF10,
|
|
"F11": tcell.KeyF11,
|
|
"F12": tcell.KeyF12,
|
|
"F13": tcell.KeyF13,
|
|
"F14": tcell.KeyF14,
|
|
"F15": tcell.KeyF15,
|
|
"F16": tcell.KeyF16,
|
|
"F17": tcell.KeyF17,
|
|
"F18": tcell.KeyF18,
|
|
"F19": tcell.KeyF19,
|
|
"F20": tcell.KeyF20,
|
|
"F21": tcell.KeyF21,
|
|
"F22": tcell.KeyF22,
|
|
"F23": tcell.KeyF23,
|
|
"F24": tcell.KeyF24,
|
|
"F25": tcell.KeyF25,
|
|
"F26": tcell.KeyF26,
|
|
"F27": tcell.KeyF27,
|
|
"F28": tcell.KeyF28,
|
|
"F29": tcell.KeyF29,
|
|
"F30": tcell.KeyF30,
|
|
"F31": tcell.KeyF31,
|
|
"F32": tcell.KeyF32,
|
|
"F33": tcell.KeyF33,
|
|
"F34": tcell.KeyF34,
|
|
"F35": tcell.KeyF35,
|
|
"F36": tcell.KeyF36,
|
|
"F37": tcell.KeyF37,
|
|
"F38": tcell.KeyF38,
|
|
"F39": tcell.KeyF39,
|
|
"F40": tcell.KeyF40,
|
|
"F41": tcell.KeyF41,
|
|
"F42": tcell.KeyF42,
|
|
"F43": tcell.KeyF43,
|
|
"F44": tcell.KeyF44,
|
|
"F45": tcell.KeyF45,
|
|
"F46": tcell.KeyF46,
|
|
"F47": tcell.KeyF47,
|
|
"F48": tcell.KeyF48,
|
|
"F49": tcell.KeyF49,
|
|
"F50": tcell.KeyF50,
|
|
"F51": tcell.KeyF51,
|
|
"F52": tcell.KeyF52,
|
|
"F53": tcell.KeyF53,
|
|
"F54": tcell.KeyF54,
|
|
"F55": tcell.KeyF55,
|
|
"F56": tcell.KeyF56,
|
|
"F57": tcell.KeyF57,
|
|
"F58": tcell.KeyF58,
|
|
"F59": tcell.KeyF59,
|
|
"F60": tcell.KeyF60,
|
|
"F61": tcell.KeyF61,
|
|
"F62": tcell.KeyF62,
|
|
"F63": tcell.KeyF63,
|
|
"F64": tcell.KeyF64,
|
|
"CtrlSpace": tcell.KeyCtrlSpace,
|
|
"CtrlA": tcell.KeyCtrlA,
|
|
"CtrlB": tcell.KeyCtrlB,
|
|
"CtrlC": tcell.KeyCtrlC,
|
|
"CtrlD": tcell.KeyCtrlD,
|
|
"CtrlE": tcell.KeyCtrlE,
|
|
"CtrlF": tcell.KeyCtrlF,
|
|
"CtrlG": tcell.KeyCtrlG,
|
|
"CtrlH": tcell.KeyCtrlH,
|
|
"CtrlI": tcell.KeyCtrlI,
|
|
"CtrlJ": tcell.KeyCtrlJ,
|
|
"CtrlK": tcell.KeyCtrlK,
|
|
"CtrlL": tcell.KeyCtrlL,
|
|
"CtrlM": tcell.KeyCtrlM,
|
|
"CtrlN": tcell.KeyCtrlN,
|
|
"CtrlO": tcell.KeyCtrlO,
|
|
"CtrlP": tcell.KeyCtrlP,
|
|
"CtrlQ": tcell.KeyCtrlQ,
|
|
"CtrlR": tcell.KeyCtrlR,
|
|
"CtrlS": tcell.KeyCtrlS,
|
|
"CtrlT": tcell.KeyCtrlT,
|
|
"CtrlU": tcell.KeyCtrlU,
|
|
"CtrlV": tcell.KeyCtrlV,
|
|
"CtrlW": tcell.KeyCtrlW,
|
|
"CtrlX": tcell.KeyCtrlX,
|
|
"CtrlY": tcell.KeyCtrlY,
|
|
"CtrlZ": tcell.KeyCtrlZ,
|
|
"CtrlLeftSq": tcell.KeyCtrlLeftSq,
|
|
"CtrlBackslash": tcell.KeyCtrlBackslash,
|
|
"CtrlRightSq": tcell.KeyCtrlRightSq,
|
|
"CtrlCarat": tcell.KeyCtrlCarat,
|
|
"CtrlUnderscore": tcell.KeyCtrlUnderscore,
|
|
"Backspace": tcell.KeyBackspace,
|
|
"Tab": tcell.KeyTab,
|
|
"Esc": tcell.KeyEsc,
|
|
"Escape": tcell.KeyEscape,
|
|
"Enter": tcell.KeyEnter,
|
|
"Space": tcell.KeySpace,
|
|
"Backspace2": tcell.KeyBackspace2,
|
|
}
|
|
|
|
var parsed map[string]string
|
|
|
|
filename := configDir + "/bindings.json"
|
|
if _, e := os.Stat(filename); e == nil {
|
|
input, err := ioutil.ReadFile(filename)
|
|
if err != nil {
|
|
TermMessage("Error reading settings.json file: " + err.Error())
|
|
return
|
|
}
|
|
|
|
json.Unmarshal(input, &parsed)
|
|
} else {
|
|
parsed = DefaultBindings()
|
|
if _, e := os.Stat(configDir); e == nil {
|
|
txt, _ := json.MarshalIndent(parsed, "", " ")
|
|
err := ioutil.WriteFile(filename, txt, 0644)
|
|
if err != nil {
|
|
TermMessage("Error writing bindings.json file: " + err.Error())
|
|
}
|
|
}
|
|
}
|
|
|
|
for k, v := range parsed {
|
|
bindings[keys[k]] = actions[v]
|
|
}
|
|
}
|
|
|
|
// DefaultBindings returns a map containing micro's default keybindings
|
|
func DefaultBindings() map[string]string {
|
|
return map[string]string{
|
|
"Up": "CursorUp",
|
|
"Down": "CursorDown",
|
|
"Right": "CursorRight",
|
|
"Left": "CursorLeft",
|
|
"Enter": "InsertEnter",
|
|
"Space": "InsertSpace",
|
|
"Backspace": "Backspace",
|
|
"Backspace2": "Backspace",
|
|
"Tab": "InsertTab",
|
|
"CtrlO": "OpenFile",
|
|
"CtrlS": "Save",
|
|
"CtrlF": "Find",
|
|
"CtrlN": "FindNext",
|
|
"CtrlP": "FindPrevious",
|
|
"CtrlZ": "Undo",
|
|
"CtrlY": "Redo",
|
|
"CtrlC": "Copy",
|
|
"CtrlX": "Cut",
|
|
"CtrlV": "Paste",
|
|
"CtrlA": "SelectAll",
|
|
"Home": "Beginning",
|
|
"End": "End",
|
|
"PageUp": "PageUp",
|
|
"PageDown": "PageDown",
|
|
"CtrlU": "HalfPageUp",
|
|
"CtrlD": "HalfPageDown",
|
|
"CtrlR": "ToggleRuler",
|
|
"Delete": "Delete",
|
|
}
|
|
}
|
|
|
|
// CursorUp moves the cursor up
|
|
func CursorUp(v *View) bool {
|
|
v.cursor.ResetSelection()
|
|
v.cursor.Up()
|
|
return true
|
|
}
|
|
|
|
// CursorDown moves the cursor down
|
|
func CursorDown(v *View) bool {
|
|
v.cursor.ResetSelection()
|
|
v.cursor.Down()
|
|
return true
|
|
}
|
|
|
|
// CursorLeft moves the cursor left
|
|
func CursorLeft(v *View) bool {
|
|
v.cursor.ResetSelection()
|
|
v.cursor.Left()
|
|
return true
|
|
}
|
|
|
|
// CursorRight moves the cursor right
|
|
func CursorRight(v *View) bool {
|
|
v.cursor.ResetSelection()
|
|
v.cursor.Right()
|
|
return true
|
|
}
|
|
|
|
// InsertSpace inserts a space
|
|
func InsertSpace(v *View) bool {
|
|
// Insert a space
|
|
if v.cursor.HasSelection() {
|
|
v.cursor.DeleteSelection()
|
|
v.cursor.ResetSelection()
|
|
}
|
|
v.eh.Insert(v.cursor.Loc(), " ")
|
|
v.cursor.Right()
|
|
return true
|
|
}
|
|
|
|
// InsertEnter inserts a newline plus possible some whitespace if autoindent is on
|
|
func InsertEnter(v *View) bool {
|
|
// Insert a newline
|
|
if v.cursor.HasSelection() {
|
|
v.cursor.DeleteSelection()
|
|
v.cursor.ResetSelection()
|
|
}
|
|
|
|
v.eh.Insert(v.cursor.Loc(), "\n")
|
|
ws := GetLeadingWhitespace(v.buf.lines[v.cursor.y])
|
|
v.cursor.Right()
|
|
|
|
if settings.AutoIndent {
|
|
v.eh.Insert(v.cursor.Loc(), ws)
|
|
for i := 0; i < len(ws); i++ {
|
|
v.cursor.Right()
|
|
}
|
|
}
|
|
v.cursor.lastVisualX = v.cursor.GetVisualX()
|
|
return true
|
|
}
|
|
|
|
// Backspace deletes the previous character
|
|
func Backspace(v *View) bool {
|
|
// Delete a character
|
|
if v.cursor.HasSelection() {
|
|
v.cursor.DeleteSelection()
|
|
v.cursor.ResetSelection()
|
|
} else if v.cursor.Loc() > 0 {
|
|
// We have to do something a bit hacky here because we want to
|
|
// delete the line by first moving left and then deleting backwards
|
|
// but the undo redo would place the cursor in the wrong place
|
|
// So instead we move left, save the position, move back, delete
|
|
// and restore the position
|
|
|
|
// If the user is using spaces instead of tabs and they are deleting
|
|
// whitespace at the start of the line, we should delete as if its a
|
|
// tab (tabSize number of spaces)
|
|
lineStart := v.buf.lines[v.cursor.y][:v.cursor.x]
|
|
if settings.TabsToSpaces && IsSpaces(lineStart) && len(lineStart) != 0 && len(lineStart)%settings.TabSize == 0 {
|
|
loc := v.cursor.Loc()
|
|
v.cursor.SetLoc(loc - settings.TabSize)
|
|
cx, cy := v.cursor.x, v.cursor.y
|
|
v.cursor.SetLoc(loc)
|
|
v.eh.Remove(loc-settings.TabSize, loc)
|
|
v.cursor.x, v.cursor.y = cx, cy
|
|
} else {
|
|
v.cursor.Left()
|
|
cx, cy := v.cursor.x, v.cursor.y
|
|
v.cursor.Right()
|
|
loc := v.cursor.Loc()
|
|
v.eh.Remove(loc-1, loc)
|
|
v.cursor.x, v.cursor.y = cx, cy
|
|
}
|
|
}
|
|
v.cursor.lastVisualX = v.cursor.GetVisualX()
|
|
return true
|
|
}
|
|
|
|
// Delete deletes the next character
|
|
func Delete(v *View) bool {
|
|
if v.cursor.HasSelection() {
|
|
v.cursor.DeleteSelection()
|
|
v.cursor.ResetSelection()
|
|
} else {
|
|
loc := v.cursor.Loc()
|
|
if loc < len(v.buf.text) {
|
|
v.eh.Remove(loc, loc+1)
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
// InsertTab inserts a tab or spaces
|
|
func InsertTab(v *View) bool {
|
|
// Insert a tab
|
|
if v.cursor.HasSelection() {
|
|
v.cursor.DeleteSelection()
|
|
v.cursor.ResetSelection()
|
|
}
|
|
if settings.TabsToSpaces {
|
|
v.eh.Insert(v.cursor.Loc(), Spaces(settings.TabSize))
|
|
for i := 0; i < settings.TabSize; i++ {
|
|
v.cursor.Right()
|
|
}
|
|
} else {
|
|
v.eh.Insert(v.cursor.Loc(), "\t")
|
|
v.cursor.Right()
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Save the buffer to disk
|
|
func Save(v *View) bool {
|
|
// If this is an empty buffer, ask for a filename
|
|
if v.buf.path == "" {
|
|
filename, canceled := messenger.Prompt("Filename: ")
|
|
if !canceled {
|
|
v.buf.path = filename
|
|
v.buf.name = filename
|
|
} else {
|
|
return true
|
|
}
|
|
}
|
|
err := v.buf.Save()
|
|
if err != nil {
|
|
messenger.Error(err.Error())
|
|
} else {
|
|
messenger.Message("Saved " + v.buf.path)
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Find opens a prompt and searches forward for the input
|
|
func Find(v *View) bool {
|
|
if v.cursor.HasSelection() {
|
|
searchStart = v.cursor.curSelection[1]
|
|
} else {
|
|
searchStart = ToCharPos(v.cursor.x, v.cursor.y, v.buf)
|
|
}
|
|
BeginSearch()
|
|
return true
|
|
}
|
|
|
|
// FindNext searches forwards for the last used search term
|
|
func FindNext(v *View) bool {
|
|
if v.cursor.HasSelection() {
|
|
searchStart = v.cursor.curSelection[1]
|
|
} else {
|
|
searchStart = ToCharPos(v.cursor.x, v.cursor.y, v.buf)
|
|
}
|
|
messenger.Message("Find: " + lastSearch)
|
|
Search(lastSearch, v, true)
|
|
return true
|
|
}
|
|
|
|
// FindPrevious searches backwards for the last used search term
|
|
func FindPrevious(v *View) bool {
|
|
if v.cursor.HasSelection() {
|
|
searchStart = v.cursor.curSelection[0]
|
|
} else {
|
|
searchStart = ToCharPos(v.cursor.x, v.cursor.y, v.buf)
|
|
}
|
|
messenger.Message("Find: " + lastSearch)
|
|
Search(lastSearch, v, false)
|
|
return true
|
|
}
|
|
|
|
// Undo undoes the last action
|
|
func Undo(v *View) bool {
|
|
v.eh.Undo()
|
|
return true
|
|
}
|
|
|
|
// Redo redoes the last action
|
|
func Redo(v *View) bool {
|
|
v.eh.Redo()
|
|
return true
|
|
}
|
|
|
|
// Copy the selection to the system clipboard
|
|
func Copy(v *View) bool {
|
|
if v.cursor.HasSelection() {
|
|
if !clipboard.Unsupported {
|
|
clipboard.WriteAll(v.cursor.GetSelection())
|
|
} else {
|
|
messenger.Error("Clipboard is not supported on your system")
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Cut the selection to the system clipboard
|
|
func Cut(v *View) bool {
|
|
if v.cursor.HasSelection() {
|
|
if !clipboard.Unsupported {
|
|
clipboard.WriteAll(v.cursor.GetSelection())
|
|
v.cursor.DeleteSelection()
|
|
v.cursor.ResetSelection()
|
|
} else {
|
|
messenger.Error("Clipboard is not supported on your system")
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Paste whatever is in the system clipboard into the buffer
|
|
// Delete and paste if the user has a selection
|
|
func Paste(v *View) bool {
|
|
if !clipboard.Unsupported {
|
|
if v.cursor.HasSelection() {
|
|
v.cursor.DeleteSelection()
|
|
v.cursor.ResetSelection()
|
|
}
|
|
clip, _ := clipboard.ReadAll()
|
|
v.eh.Insert(v.cursor.Loc(), clip)
|
|
v.cursor.SetLoc(v.cursor.Loc() + Count(clip))
|
|
} else {
|
|
messenger.Error("Clipboard is not supported on your system")
|
|
}
|
|
return true
|
|
}
|
|
|
|
// SelectAll selects the entire buffer
|
|
func SelectAll(v *View) bool {
|
|
v.cursor.curSelection[1] = 0
|
|
v.cursor.curSelection[0] = v.buf.Len()
|
|
// Put the cursor at the beginning
|
|
v.cursor.x = 0
|
|
v.cursor.y = 0
|
|
return true
|
|
}
|
|
|
|
// OpenFile opens a new file in the buffer
|
|
func OpenFile(v *View) bool {
|
|
if v.CanClose("Continue? (yes, no, save) ") {
|
|
filename, canceled := messenger.Prompt("File to open: ")
|
|
if canceled {
|
|
return true
|
|
}
|
|
home, _ := homedir.Dir()
|
|
filename = strings.Replace(filename, "~", home, 1)
|
|
file, err := ioutil.ReadFile(filename)
|
|
|
|
if err != nil {
|
|
messenger.Error(err.Error())
|
|
return true
|
|
}
|
|
buf := NewBuffer(string(file), filename)
|
|
v.OpenBuffer(buf)
|
|
}
|
|
return true
|
|
}
|
|
|
|
// Beginning moves the viewport to the start of the buffer
|
|
func Beginning(v *View) bool {
|
|
v.topline = 0
|
|
return false
|
|
}
|
|
|
|
// End moves the viewport to the end of the buffer
|
|
func End(v *View) bool {
|
|
if v.height > len(v.buf.lines) {
|
|
v.topline = 0
|
|
} else {
|
|
v.topline = len(v.buf.lines) - v.height
|
|
}
|
|
return false
|
|
}
|
|
|
|
// PageUp scrolls the view up a page
|
|
func PageUp(v *View) bool {
|
|
if v.topline > v.height {
|
|
v.ScrollUp(v.height)
|
|
} else {
|
|
v.topline = 0
|
|
}
|
|
return false
|
|
}
|
|
|
|
// PageDown scrolls the view down a page
|
|
func PageDown(v *View) bool {
|
|
if len(v.buf.lines)-(v.topline+v.height) > v.height {
|
|
v.ScrollDown(v.height)
|
|
} else {
|
|
if len(v.buf.lines) >= v.height {
|
|
v.topline = len(v.buf.lines) - v.height
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// HalfPageUp scrolls the view up half a page
|
|
func HalfPageUp(v *View) bool {
|
|
if v.topline > v.height/2 {
|
|
v.ScrollUp(v.height / 2)
|
|
} else {
|
|
v.topline = 0
|
|
}
|
|
return false
|
|
}
|
|
|
|
// HalfPageDown scrolls the view down half a page
|
|
func HalfPageDown(v *View) bool {
|
|
if len(v.buf.lines)-(v.topline+v.height) > v.height/2 {
|
|
v.ScrollDown(v.height / 2)
|
|
} else {
|
|
if len(v.buf.lines) >= v.height {
|
|
v.topline = len(v.buf.lines) - v.height
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
// ToggleRuler turns line numbers off and on
|
|
func ToggleRuler(v *View) bool {
|
|
if settings.Ruler == false {
|
|
settings.Ruler = true
|
|
} else {
|
|
settings.Ruler = false
|
|
}
|
|
return false
|
|
}
|