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/**
* Supported keybindings:
*
* Motion:
* h, j, k, l
* gj, gk
* e, E, w, W, b, B, ge, gE
* f<character>, F<character>, t<character>, T<character>
* $, ^, 0
* gg, G
* %
* '<character>, `<character>
*
* Operator:
* d, y, c
* dd, yy, cc
* g~, g~g~
* >, <, >>, <<
*
* Operator-Motion:
* x, X, D, Y, C, ~
*
* Action:
* a, i, s, A, I, S, o, O
* zz, z., z<CR>, zt, zb, z-
* J
* u, Ctrl-r
* m<character>
* r<character>
*
* Modes:
* ESC - leave insert mode, visual mode, and clear input state.
* Ctrl-[, Ctrl-c - same as ESC.
*
* Registers: unamed, -, a-z, A-Z, 0-9
* (Does not respect the special case for number registers when delete
* operator is made with these commands: %, (, ), , /, ?, n, N, {, } )
* TODO: Implement the remaining registers.
* Marks: a-z, A-Z, and 0-9
* TODO: Implement the remaining special marks. They have more complex
* behavior.
*
* Code structure:
* 1. Default keymap
* 2. Variable declarations and short basic helpers
* 3. Instance (External API) implementation
* 4. Internal state tracking objects (input state, counter) implementation
* and instanstiation
* 5. Key handler (the main command dispatcher) implementation
* 6. Motion, operator, and action implementations
* 7. Helper functions for the key handler, motions, operators, and actions
* 8. Set up Vim to work as a keymap for CodeMirror.
*/
(function() {
'use strict';
var defaultKeymap = [
// Key to key mapping. This goes first to make it possible to override
// existing mappings.
{ keys: ['Left'], type: 'keyToKey', toKeys: ['h'] },
{ keys: ['Right'], type: 'keyToKey', toKeys: ['l'] },
{ keys: ['Up'], type: 'keyToKey', toKeys: ['k'] },
{ keys: ['Down'], type: 'keyToKey', toKeys: ['j'] },
{ keys: ['Space'], type: 'keyToKey', toKeys: ['l'] },
{ keys: ['Backspace'], type: 'keyToKey', toKeys: ['h'] },
{ keys: ['Ctrl-Space'], type: 'keyToKey', toKeys: ['W'] },
{ keys: ['Ctrl-Backspace'], type: 'keyToKey', toKeys: ['B'] },
{ keys: ['Shift-Space'], type: 'keyToKey', toKeys: ['w'] },
{ keys: ['Shift-Backspace'], type: 'keyToKey', toKeys: ['b'] },
{ keys: ['Ctrl-n'], type: 'keyToKey', toKeys: ['j'] },
{ keys: ['Ctrl-p'], type: 'keyToKey', toKeys: ['k'] },
{ keys: ['Ctrl-['], type: 'keyToKey', toKeys: ['Esc'] },
{ keys: ['Ctrl-c'], type: 'keyToKey', toKeys: ['Esc'] },
{ keys: ['s'], type: 'keyToKey', toKeys: ['c', 'l'] },
{ keys: ['S'], type: 'keyToKey', toKeys: ['c', 'c'] },
{ keys: ['Home'], type: 'keyToKey', toKeys: ['0'] },
{ keys: ['End'], type: 'keyToKey', toKeys: ['$'] },
{ keys: ['PageUp'], type: 'keyToKey', toKeys: ['Ctrl-b'] },
{ keys: ['PageDown'], type: 'keyToKey', toKeys: ['Ctrl-f'] },
// Motions
{ keys: ['h'], type: 'motion',
motion: 'moveByCharacters',
motionArgs: { forward: false }},
{ keys: ['l'], type: 'motion',
motion: 'moveByCharacters',
motionArgs: { forward: true }},
{ keys: ['j'], type: 'motion',
motion: 'moveByLines',
motionArgs: { forward: true, linewise: true }},
{ keys: ['k'], type: 'motion',
motion: 'moveByLines',
motionArgs: { forward: false, linewise: true }},
{ keys: ['g','j'], type: 'motion',
motion: 'moveByDisplayLines',
motionArgs: { forward: true, linewise: true }},
{ keys: ['g','k'], type: 'motion',
motion: 'moveByDisplayLines',
motionArgs: { forward: false, linewise: true }},
{ keys: ['w'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: true, wordEnd: false }},
{ keys: ['W'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: true, wordEnd: false, bigWord: true }},
{ keys: ['e'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: true, wordEnd: true, inclusive: true }},
{ keys: ['E'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: true, wordEnd: true, bigWord: true,
inclusive: true }},
{ keys: ['b'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: false, wordEnd: false }},
{ keys: ['B'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: false, wordEnd: false, bigWord: true }},
{ keys: ['g', 'e'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: false, wordEnd: true, inclusive: true }},
{ keys: ['g', 'E'], type: 'motion',
motion: 'moveByWords',
motionArgs: { forward: false, wordEnd: true, bigWord: true,
inclusive: true }},
{ keys: ['{'], type: 'motion', motion: 'moveByParagraph',
motionArgs: { forward: false }},
{ keys: ['}'], type: 'motion', motion: 'moveByParagraph',
motionArgs: { forward: true }},
{ keys: ['Ctrl-f'], type: 'motion',
motion: 'moveByPage', motionArgs: { forward: true }},
{ keys: ['Ctrl-b'], type: 'motion',
motion: 'moveByPage', motionArgs: { forward: false }},
{ keys: ['g', 'g'], type: 'motion',
motion: 'moveToLineOrEdgeOfDocument',
motionArgs: { forward: false, explicitRepeat: true, linewise: true }},
{ keys: ['G'], type: 'motion',
motion: 'moveToLineOrEdgeOfDocument',
motionArgs: { forward: true, explicitRepeat: true, linewise: true }},
{ keys: ['0'], type: 'motion', motion: 'moveToStartOfLine' },
{ keys: ['^'], type: 'motion',
motion: 'moveToFirstNonWhiteSpaceCharacter' },
{ keys: ['$'], type: 'motion',
motion: 'moveToEol',
motionArgs: { inclusive: true }},
{ keys: ['%'], type: 'motion',
motion: 'moveToMatchedSymbol',
motionArgs: { inclusive: true }},
{ keys: ['f', 'character'], type: 'motion',
motion: 'moveToCharacter',
motionArgs: { forward: true , inclusive: true }},
{ keys: ['F', 'character'], type: 'motion',
motion: 'moveToCharacter',
motionArgs: { forward: false }},
{ keys: ['t', 'character'], type: 'motion',
motion: 'moveTillCharacter',
motionArgs: { forward: true, inclusive: true }},
{ keys: ['T', 'character'], type: 'motion',
motion: 'moveTillCharacter',
motionArgs: { forward: false }},
{ keys: ['\'', 'character'], type: 'motion', motion: 'goToMark' },
{ keys: ['`', 'character'], type: 'motion', motion: 'goToMark' },
{ keys: ['|'], type: 'motion',
motion: 'moveToColumn',
motionArgs: { }},
// Operators
{ keys: ['d'], type: 'operator', operator: 'delete' },
{ keys: ['y'], type: 'operator', operator: 'yank' },
{ keys: ['c'], type: 'operator', operator: 'change',
operatorArgs: { enterInsertMode: true } },
{ keys: ['>'], type: 'operator', operator: 'indent',
operatorArgs: { indentRight: true }},
{ keys: ['<'], type: 'operator', operator: 'indent',
operatorArgs: { indentRight: false }},
{ keys: ['g', '~'], type: 'operator', operator: 'swapcase' },
{ keys: ['n'], type: 'motion', motion: 'findNext' },
{ keys: ['N'], type: 'motion', motion: 'findPrev' },
// Operator-Motion dual commands
{ keys: ['x'], type: 'operatorMotion', operator: 'delete',
motion: 'moveByCharacters', motionArgs: { forward: true },
operatorMotionArgs: { visualLine: false }},
{ keys: ['X'], type: 'operatorMotion', operator: 'delete',
motion: 'moveByCharacters', motionArgs: { forward: false },
operatorMotionArgs: { visualLine: true }},
{ keys: ['D'], type: 'operatorMotion', operator: 'delete',
motion: 'moveToEol', motionArgs: { inclusive: true },
operatorMotionArgs: { visualLine: true }},
{ keys: ['Y'], type: 'operatorMotion', operator: 'yank',
motion: 'moveToEol', motionArgs: { inclusive: true },
operatorMotionArgs: { visualLine: true }},
{ keys: ['C'], type: 'operatorMotion',
operator: 'change', operatorArgs: { enterInsertMode: true },
motion: 'moveToEol', motionArgs: { inclusive: true },
operatorMotionArgs: { visualLine: true }},
{ keys: ['~'], type: 'operatorMotion', operator: 'swapcase',
motion: 'moveByCharacters', motionArgs: { forward: true }},
// Actions
{ keys: ['a'], type: 'action', action: 'enterInsertMode',
actionArgs: { insertAt: 'charAfter' }},
{ keys: ['A'], type: 'action', action: 'enterInsertMode',
actionArgs: { insertAt: 'eol' }},
{ keys: ['i'], type: 'action', action: 'enterInsertMode' },
{ keys: ['I'], type: 'action', action: 'enterInsertMode',
motion: 'moveToFirstNonWhiteSpaceCharacter' },
{ keys: ['o'], type: 'action', action: 'newLineAndEnterInsertMode',
actionArgs: { after: true }},
{ keys: ['O'], type: 'action', action: 'newLineAndEnterInsertMode',
actionArgs: { after: false }},
{ keys: ['v'], type: 'action', action: 'toggleVisualMode' },
{ keys: ['V'], type: 'action', action: 'toggleVisualMode',
actionArgs: { linewise: true }},
{ keys: ['J'], type: 'action', action: 'joinLines' },
{ keys: ['p'], type: 'action', action: 'paste',
actionArgs: { after: true }},
{ keys: ['P'], type: 'action', action: 'paste',
actionArgs: { after: false }},
{ keys: ['r', 'character'], type: 'action', action: 'replace' },
{ keys: ['u'], type: 'action', action: 'undo' },
{ keys: ['Ctrl-r'], type: 'action', action: 'redo' },
{ keys: ['m', 'character'], type: 'action', action: 'setMark' },
{ keys: ['\"', 'character'], type: 'action', action: 'setRegister' },
{ keys: ['z', 'z'], type: 'action', action: 'scrollToCursor',
actionArgs: { position: 'center' }},
{ keys: ['z', '.'], type: 'action', action: 'scrollToCursor',
actionArgs: { position: 'center' },
motion: 'moveToFirstNonWhiteSpaceCharacter' },
{ keys: ['z', 't'], type: 'action', action: 'scrollToCursor',
actionArgs: { position: 'top' }},
{ keys: ['z', 'Enter'], type: 'action', action: 'scrollToCursor',
actionArgs: { position: 'top' },
motion: 'moveToFirstNonWhiteSpaceCharacter' },
{ keys: ['z', '-'], type: 'action', action: 'scrollToCursor',
actionArgs: { position: 'bottom' }},
{ keys: ['z', 'b'], type: 'action', action: 'scrollToCursor',
actionArgs: { position: 'bottom' },
motion: 'moveToFirstNonWhiteSpaceCharacter' },
// Text object motions
{ keys: ['a', 'character'], type: 'motion',
motion: 'textObjectManipulation' },
{ keys: ['i', 'character'], type: 'motion',
motion: 'textObjectManipulation',
motionArgs: { textObjectInner: true }},
// Search
{ keys: ['/'], type: 'search',
searchArgs: { forward: true, querySrc: 'prompt' }},
{ keys: ['?'], type: 'search',
searchArgs: { forward: false, querySrc: 'prompt' }},
{ keys: ['*'], type: 'search',
searchArgs: { forward: true, querySrc: 'wordUnderCursor' }},
{ keys: ['#'], type: 'search',
searchArgs: { forward: false, querySrc: 'wordUnderCursor' }},
// Ex command
{ keys: [':'], type: 'ex' }
];
var Vim = function() {
var alphabetRegex = /[A-Za-z]/;
var numberRegex = /[\d]/;
var whiteSpaceRegex = /\s/;
var wordRegexp = [(/\w/), (/[^\w\s]/)], bigWordRegexp = [(/\S/)];
function makeKeyRange(start, size) {
var keys = [];
for (var i = start; i < start + size; i++) {
keys.push(String.fromCharCode(i));
}
return keys;
}
var upperCaseAlphabet = makeKeyRange(65, 26);
var lowerCaseAlphabet = makeKeyRange(97, 26);
var numbers = makeKeyRange(48, 10);
var SPECIAL_SYMBOLS = '~`!@#$%^&*()_-+=[{}]\\|/?.,<>:;\"\'';
var specialSymbols = SPECIAL_SYMBOLS.split('');
var specialKeys = ['Left', 'Right', 'Up', 'Down', 'Space', 'Backspace',
'Esc', 'Home', 'End', 'PageUp', 'PageDown', 'Enter'];
var validMarks = upperCaseAlphabet.concat(lowerCaseAlphabet).concat(
numbers).concat(['<', '>']);
var validRegisters = upperCaseAlphabet.concat(lowerCaseAlphabet).concat(
numbers).concat('-\"'.split(''));
function isAlphabet(k) {
return alphabetRegex.test(k);
}
function isLine(cm, line) {
return line >= cm.firstLine() && line <= cm.lastLine();
}
function isLowerCase(k) {
return (/^[a-z]$/).test(k);
}
function isMatchableSymbol(k) {
return '()[]{}'.indexOf(k) != -1;
}
function isNumber(k) {
return numberRegex.test(k);
}
function isUpperCase(k) {
return (/^[A-Z]$/).test(k);
}
function isAlphanumeric(k) {
return (/^[\w]$/).test(k);
}
function isWhiteSpace(k) {
return whiteSpaceRegex.test(k);
}
function isWhiteSpaceString(k) {
return (/^\s*$/).test(k);
}
function inRangeInclusive(x, start, end) {
return x >= start && x <= end;
}
function inArray(val, arr) {
for (var i = 0; i < arr.length; i++) {
if (arr[i] == val) {
return true;
}
}
return false;
}
// Global Vim state. Call getVimGlobalState to get and initialize.
var vimGlobalState;
function getVimGlobalState() {
if (!vimGlobalState) {
vimGlobalState = {
// The current search query.
searchQuery: null,
// Whether we are searching backwards.
searchIsReversed: false,
registerController: new RegisterController({})
};
}
return vimGlobalState;
}
function getVimState(cm) {
if (!cm.vimState) {
// Store instance state in the CodeMirror object.
cm.vimState = {
inputState: new InputState(),
// When using jk for navigation, if you move from a longer line to a
// shorter line, the cursor may clip to the end of the shorter line.
// If j is pressed again and cursor goes to the next line, the
// cursor should go back to its horizontal position on the longer
// line if it can. This is to keep track of the horizontal position.
lastHPos: -1,
// Doing the same with screen-position for gj/gk
lastHSPos: -1,
// The last motion command run. Cleared if a non-motion command gets
// executed in between.
lastMotion: null,
marks: {},
visualMode: false,
// If we are in visual line mode. No effect if visualMode is false.
visualLine: false
};
}
return cm.vimState;
}
var vimApi= {
buildKeyMap: function() {
// TODO: Convert keymap into dictionary format for fast lookup.
},
// Testing hook, though it might be useful to expose the register
// controller anyways.
getRegisterController: function() {
return getVimGlobalState().registerController;
},
// Testing hook.
clearVimGlobalState_: function() {
vimGlobalState = null;
},
map: function(lhs, rhs) {
// Add user defined key bindings.
exCommandDispatcher.map(lhs, rhs);
},
defineEx: function(name, prefix, func){
if (name.indexOf(prefix) === 0) {
exCommands[name]=func;
exCommandDispatcher.commandMap_[prefix]={name:name, shortName:prefix, type:'api'};
}else throw new Error("(Vim.defineEx) \""+prefix+"\" is not a prefix of \""+name+"\", command not registered");
},
// Initializes vim state variable on the CodeMirror object. Should only be
// called lazily by handleKey or for testing.
maybeInitState: function(cm) {
getVimState(cm);
},
// This is the outermost function called by CodeMirror, after keys have
// been mapped to their Vim equivalents.
handleKey: function(cm, key) {
var command;
var vim = getVimState(cm);
if (key == 'Esc') {
// Clear input state and get back to normal mode.
vim.inputState.reset();
if (vim.visualMode) {
exitVisualMode(cm, vim);
}
return;
}
if (vim.visualMode &&
cursorEqual(cm.getCursor('head'), cm.getCursor('anchor'))) {
// The selection was cleared. Exit visual mode.
exitVisualMode(cm, vim);
}
if (!vim.visualMode &&
!cursorEqual(cm.getCursor('head'), cm.getCursor('anchor'))) {
vim.visualMode = true;
vim.visualLine = false;
}
if (key != '0' || (key == '0' && vim.inputState.getRepeat() === 0)) {
// Have to special case 0 since it's both a motion and a number.
command = commandDispatcher.matchCommand(key, defaultKeymap, vim);
}
if (!command) {
if (isNumber(key)) {
// Increment count unless count is 0 and key is 0.
vim.inputState.pushRepeatDigit(key);
}
return;
}
if (command.type == 'keyToKey') {
// TODO: prevent infinite recursion.
for (var i = 0; i < command.toKeys.length; i++) {
this.handleKey(cm, command.toKeys[i]);
}
} else {
commandDispatcher.processCommand(cm, vim, command);
}
}
};
// Represents the current input state.
function InputState() {
this.reset();
}
InputState.prototype.reset = function() {
this.prefixRepeat = [];
this.motionRepeat = [];
this.operator = null;
this.operatorArgs = null;
this.motion = null;
this.motionArgs = null;
this.keyBuffer = []; // For matching multi-key commands.
this.registerName = null; // Defaults to the unamed register.
};
InputState.prototype.pushRepeatDigit = function(n) {
if (!this.operator) {
this.prefixRepeat = this.prefixRepeat.concat(n);
} else {
this.motionRepeat = this.motionRepeat.concat(n);
}
};
InputState.prototype.getRepeat = function() {
var repeat = 0;
if (this.prefixRepeat.length > 0 || this.motionRepeat.length > 0) {
repeat = 1;
if (this.prefixRepeat.length > 0) {
repeat *= parseInt(this.prefixRepeat.join(''), 10);
}
if (this.motionRepeat.length > 0) {
repeat *= parseInt(this.motionRepeat.join(''), 10);
}
}
return repeat;
};
/*
* Register stores information about copy and paste registers. Besides
* text, a register must store whether it is linewise (i.e., when it is
* pasted, should it insert itself into a new line, or should the text be
* inserted at the cursor position.)
*/
function Register(text, linewise) {
this.clear();
if (text) {
this.set(text, linewise);
}
}
Register.prototype = {
set: function(text, linewise) {
this.text = text;
this.linewise = !!linewise;
},
append: function(text, linewise) {
// if this register has ever been set to linewise, use linewise.
if (linewise || this.linewise) {
this.text += '\n' + text;
this.linewise = true;
} else {
this.text += text;
}
},
clear: function() {
this.text = '';
this.linewise = false;
},
toString: function() { return this.text; }
};
/*
* vim registers allow you to keep many independent copy and paste buffers.
* See http://usevim.com/2012/04/13/registers/ for an introduction.
*
* RegisterController keeps the state of all the registers. An initial
* state may be passed in. The unnamed register '"' will always be
* overridden.
*/
function RegisterController(registers) {
this.registers = registers;
this.unamedRegister = registers['\"'] = new Register();
}
RegisterController.prototype = {
pushText: function(registerName, operator, text, linewise) {
// Lowercase and uppercase registers refer to the same register.
// Uppercase just means append.
var register = this.isValidRegister(registerName) ?
this.getRegister(registerName) : null;
// if no register/an invalid register was specified, things go to the
// default registers
if (!register) {
switch (operator) {
case 'yank':
// The 0 register contains the text from the most recent yank.
this.registers['0'] = new Register(text, linewise);
break;
case 'delete':
case 'change':
if (text.indexOf('\n') == -1) {
// Delete less than 1 line. Update the small delete register.
this.registers['-'] = new Register(text, linewise);
} else {
// Shift down the contents of the numbered registers and put the
// deleted text into register 1.
this.shiftNumericRegisters_();
this.registers['1'] = new Register(text, linewise);
}
break;
}
// Make sure the unnamed register is set to what just happened
this.unamedRegister.set(text, linewise);
return;
}
// If we've gotten to this point, we've actually specified a register
var append = isUpperCase(registerName);
if (append) {
register.append(text, linewise);
// The unamed register always has the same value as the last used
// register.
this.unamedRegister.append(text, linewise);
} else {
register.set(text, linewise);
this.unamedRegister.set(text, linewise);
}
},
// Gets the register named @name. If one of @name doesn't already exist,
// create it. If @name is invalid, return the unamedRegister.
getRegister: function(name) {
if (!this.isValidRegister(name)) {
return this.unamedRegister;
}
name = name.toLowerCase();
if (!this.registers[name]) {
this.registers[name] = new Register();
}
return this.registers[name];
},
isValidRegister: function(name) {
return name && inArray(name, validRegisters);
},
shiftNumericRegisters_: function() {
for (var i = 9; i >= 2; i--) {
this.registers[i] = this.getRegister('' + (i - 1));
}
}
};
var commandDispatcher = {
matchCommand: function(key, keyMap, vim) {
var inputState = vim.inputState;
var keys = inputState.keyBuffer.concat(key);
for (var i = 0; i < keyMap.length; i++) {
var command = keyMap[i];
if (matchKeysPartial(keys, command.keys)) {
if (keys.length < command.keys.length) {
// Matches part of a multi-key command. Buffer and wait for next
// stroke.
inputState.keyBuffer.push(key);
return null;
} else {
if (inputState.operator && command.type == 'action') {
// Ignore matched action commands after an operator. Operators
// only operate on motions. This check is really for text
// objects since aW, a[ etcs conflicts with a.
continue;
}
// Matches whole comand. Return the command.
if (command.keys[keys.length - 1] == 'character') {
inputState.selectedCharacter = keys[keys.length - 1];
}
inputState.keyBuffer = [];
return command;
}
}
}
// Clear the buffer since there are no partial matches.
inputState.keyBuffer = [];
return null;
},
processCommand: function(cm, vim, command) {
switch (command.type) {
case 'motion':
this.processMotion(cm, vim, command);
break;
case 'operator':
this.processOperator(cm, vim, command);
break;
case 'operatorMotion':
this.processOperatorMotion(cm, vim, command);
break;
case 'action':
this.processAction(cm, vim, command);
break;
case 'search':
this.processSearch(cm, vim, command);
break;
case 'ex':
case 'keyToEx':
this.processEx(cm, vim, command);
break;
default:
break;
}
},
processMotion: function(cm, vim, command) {
vim.inputState.motion = command.motion;
vim.inputState.motionArgs = copyArgs(command.motionArgs);
this.evalInput(cm, vim);
},
processOperator: function(cm, vim, command) {
var inputState = vim.inputState;
if (inputState.operator) {
if (inputState.operator == command.operator) {
// Typing an operator twice like 'dd' makes the operator operate
// linewise
inputState.motion = 'expandToLine';
inputState.motionArgs = { linewise: true };
this.evalInput(cm, vim);
return;
} else {
// 2 different operators in a row doesn't make sense.
inputState.reset();
}
}
inputState.operator = command.operator;
inputState.operatorArgs = copyArgs(command.operatorArgs);
if (vim.visualMode) {
// Operating on a selection in visual mode. We don't need a motion.
this.evalInput(cm, vim);
}
},
processOperatorMotion: function(cm, vim, command) {
var visualMode = vim.visualMode;
var operatorMotionArgs = copyArgs(command.operatorMotionArgs);
if (operatorMotionArgs) {
// Operator motions may have special behavior in visual mode.
if (visualMode && operatorMotionArgs.visualLine) {
vim.visualLine = true;
}
}
this.processOperator(cm, vim, command);
if (!visualMode) {
this.processMotion(cm, vim, command);
}
},
processAction: function(cm, vim, command) {
var inputState = vim.inputState;
var repeat = inputState.getRepeat();
var repeatIsExplicit = !!repeat;
var actionArgs = copyArgs(command.actionArgs) || {};
if (inputState.selectedCharacter) {
actionArgs.selectedCharacter = inputState.selectedCharacter;
}
// Actions may or may not have motions and operators. Do these first.
if (command.operator) {
this.processOperator(cm, vim, command);
}
if (command.motion) {
this.processMotion(cm, vim, command);
}
if (command.motion || command.operator) {
this.evalInput(cm, vim);
}
actionArgs.repeat = repeat || 1;
actionArgs.repeatIsExplicit = repeatIsExplicit;
actionArgs.registerName = inputState.registerName;
inputState.reset();
vim.lastMotion = null,
actions[command.action](cm, actionArgs, vim);
},
processSearch: function(cm, vim, command) {
if (!cm.getSearchCursor) {
// Search depends on SearchCursor.
return;
}
var forward = command.searchArgs.forward;
getSearchState(cm).setReversed(!forward);
var promptPrefix = (forward) ? '/' : '?';
function handleQuery(query, ignoreCase, smartCase) {
updateSearchQuery(cm, query, ignoreCase, smartCase);
commandDispatcher.processMotion(cm, vim, {
type: 'motion',
motion: 'findNext'
});
}
function onPromptClose(query) {
handleQuery(query, true /** ignoreCase */, true /** smartCase */);
}
switch (command.searchArgs.querySrc) {
case 'prompt':
showPrompt(cm, onPromptClose, promptPrefix, searchPromptDesc);
break;
case 'wordUnderCursor':
var word = expandWordUnderCursor(cm, false /** inclusive */,
true /** forward */, false /** bigWord */,
true /** noSymbol */);
var isKeyword = true;
if (!word) {
word = expandWordUnderCursor(cm, false /** inclusive */,
true /** forward */, false /** bigWord */,
false /** noSymbol */);
isKeyword = false;
}
if (!word) {
return;
}
var query = cm.getLine(word.start.line).substring(word.start.ch,
word.end.ch + 1);
if (isKeyword) {
query = '\\b' + query + '\\b';
} else {
query = escapeRegex(query);
}
cm.setCursor(word.start);
handleQuery(query, true /** ignoreCase */, false /** smartCase */);
break;
}
},
processEx: function(cm, vim, command) {
function onPromptClose(input) {
exCommandDispatcher.processCommand(cm, input);
}
if (command.type == 'keyToEx') {
// Handle user defined Ex to Ex mappings
exCommandDispatcher.processCommand(cm, command.exArgs.input);
} else {
if (vim.visualMode) {
showPrompt(cm, onPromptClose, ':', undefined, '\'<,\'>');
} else {
showPrompt(cm, onPromptClose, ':');
}
}
},
evalInput: function(cm, vim) {
// If the motion comand is set, execute both the operator and motion.
// Otherwise return.
var inputState = vim.inputState;
var motion = inputState.motion;
var motionArgs = inputState.motionArgs || {};
var operator = inputState.operator;
var operatorArgs = inputState.operatorArgs || {};
var registerName = inputState.registerName;
var selectionEnd = cm.getCursor('head');
var selectionStart = cm.getCursor('anchor');
// The difference between cur and selection cursors are that cur is
// being operated on and ignores that there is a selection.
var curStart = copyCursor(selectionEnd);
var curOriginal = copyCursor(curStart);
var curEnd;
var repeat;
if (motionArgs.repeat !== undefined) {
// If motionArgs specifies a repeat, that takes precedence over the
// input state's repeat. Used by Ex mode and can be user defined.
repeat = inputState.motionArgs.repeat;
} else {
repeat = inputState.getRepeat();
}
if (repeat > 0 && motionArgs.explicitRepeat) {
motionArgs.repeatIsExplicit = true;
} else if (motionArgs.noRepeat ||
(!motionArgs.explicitRepeat && repeat === 0)) {
repeat = 1;
motionArgs.repeatIsExplicit = false;
}
if (inputState.selectedCharacter) {
// If there is a character input, stick it in all of the arg arrays.
motionArgs.selectedCharacter = operatorArgs.selectedCharacter =
inputState.selectedCharacter;
}
motionArgs.repeat = repeat;
inputState.reset();
if (motion) {
var motionResult = motions[motion](cm, motionArgs, vim);
vim.lastMotion = motions[motion];
if (!motionResult) {
return;
}
if (motionResult instanceof Array) {
curStart = motionResult[0];
curEnd = motionResult[1];
} else {
curEnd = motionResult;
}
// TODO: Handle null returns from motion commands better.
if (!curEnd) {
curEnd = { ch: curStart.ch, line: curStart.line };
}
if (vim.visualMode) {
// Check if the selection crossed over itself. Will need to shift
// the start point if that happened.
if (cursorIsBefore(selectionStart, selectionEnd) &&
(cursorEqual(selectionStart, curEnd) ||
cursorIsBefore(curEnd, selectionStart))) {
// The end of the selection has moved from after the start to
// before the start. We will shift the start right by 1.
selectionStart.ch += 1;
} else if (cursorIsBefore(selectionEnd, selectionStart) &&
(cursorEqual(selectionStart, curEnd) ||
cursorIsBefore(selectionStart, curEnd))) {
// The opposite happened. We will shift the start left by 1.
selectionStart.ch -= 1;
}
selectionEnd = curEnd;
if (vim.visualLine) {
if (cursorIsBefore(selectionStart, selectionEnd)) {
selectionStart.ch = 0;
selectionEnd.ch = lineLength(cm, selectionEnd.line);
} else {
selectionEnd.ch = 0;
selectionStart.ch = lineLength(cm, selectionStart.line);
}
}
cm.setSelection(selectionStart, selectionEnd);
updateMark(cm, vim, '<',
cursorIsBefore(selectionStart, selectionEnd) ? selectionStart
: selectionEnd);
updateMark(cm, vim, '>',
cursorIsBefore(selectionStart, selectionEnd) ? selectionEnd
: selectionStart);
} else if (!operator) {
curEnd = clipCursorToContent(cm, curEnd);
cm.setCursor(curEnd.line, curEnd.ch);
}
}
if (operator) {
var inverted = false;
vim.lastMotion = null;
operatorArgs.repeat = repeat; // Indent in visual mode needs this.
if (vim.visualMode) {
curStart = selectionStart;
curEnd = selectionEnd;
motionArgs.inclusive = true;
}
// Swap start and end if motion was backward.
if (cursorIsBefore(curEnd, curStart)) {
var tmp = curStart;
curStart = curEnd;
curEnd = tmp;
inverted = true;
}
if (motionArgs.inclusive && !(vim.visualMode && inverted)) {
// Move the selection end one to the right to include the last
// character.
curEnd.ch++;
}
var linewise = motionArgs.linewise ||
(vim.visualMode && vim.visualLine);
if (linewise) {
// Expand selection to entire line.
expandSelectionToLine(cm, curStart, curEnd);
} else if (motionArgs.forward) {
// Clip to trailing newlines only if we the motion goes forward.
clipToLine(cm, curStart, curEnd);
}
operatorArgs.registerName = registerName;
// Keep track of linewise as it affects how paste and change behave.
operatorArgs.linewise = linewise;
operators[operator](cm, operatorArgs, vim, curStart,
curEnd, curOriginal);
if (vim.visualMode) {
exitVisualMode(cm, vim);
}
if (operatorArgs.enterInsertMode) {
actions.enterInsertMode(cm);
}
}
}
};
/**
* typedef {Object{line:number,ch:number}} Cursor An object containing the
* position of the cursor.
*/
// All of the functions below return Cursor objects.
var motions = {
expandToLine: function(cm, motionArgs) {
// Expands forward to end of line, and then to next line if repeat is
// >1. Does not handle backward motion!
var cur = cm.getCursor();
return { line: cur.line + motionArgs.repeat - 1, ch: Infinity };
},
findNext: function(cm, motionArgs, vim) {
return findNext(cm, false /** prev */, motionArgs.repeat);
},
findPrev: function(cm, motionArgs, vim) {
return findNext(cm, true /** prev */, motionArgs.repeat);
},
goToMark: function(cm, motionArgs, vim) {
var mark = vim.marks[motionArgs.selectedCharacter];
if (mark) {
return mark.find();
}
return null;
},
moveByCharacters: function(cm, motionArgs) {
var cur = cm.getCursor();
var repeat = motionArgs.repeat;
var ch = motionArgs.forward ? cur.ch + repeat : cur.ch - repeat;
return { line: cur.line, ch: ch };
},
moveByLines: function(cm, motionArgs, vim) {
var cur = cm.getCursor();
var endCh = cur.ch;
// Depending what our last motion was, we may want to do different
// things. If our last motion was moving vertically, we want to
// preserve the HPos from our last horizontal move. If our last motion
// was going to the end of a line, moving vertically we should go to
// the end of the line, etc.
switch (vim.lastMotion) {
case this.moveByLines:
case this.moveByDisplayLines:
case this.moveToColumn:
case this.moveToEol:
endCh = vim.lastHPos;
break;
default:
vim.lastHPos = endCh;
}
var repeat = motionArgs.repeat;
var line = motionArgs.forward ? cur.line + repeat : cur.line - repeat;
if (line < cm.firstLine() || line > cm.lastLine() ) {
return null;
}
vim.lastHSPos = cm.charCoords({line:line, ch:endCh},"div").left;
return { line: line, ch: endCh };
},
moveByDisplayLines: function(cm, motionArgs, vim) {
var cur = cm.getCursor();
switch (vim.lastMotion) {
case this.moveByDisplayLines:
case this.moveByLines:
case this.moveToColumn:
case this.moveToEol:
break;
default:
vim.lastHSPos = cm.charCoords(cur,"div").left;
}
var repeat = motionArgs.repeat;
var res=cm.findPosV(cur,(motionArgs.forward ? repeat : -repeat),"line",vim.lastHSPos);
if(res.hitSide)return null;
vim.lastHPos = res.ch;
return res;
},
moveByPage: function(cm, motionArgs) {
// CodeMirror only exposes functions that move the cursor page down, so
// doing this bad hack to move the cursor and move it back. evalInput
// will move the cursor to where it should be in the end.
var curStart = cm.getCursor();
var repeat = motionArgs.repeat;
cm.moveV((motionArgs.forward ? repeat : -repeat), 'page');
var curEnd = cm.getCursor();
cm.setCursor(curStart);
return curEnd;
},
moveByParagraph: function(cm, motionArgs) {
var line = cm.getCursor().line;
var repeat = motionArgs.repeat;
var inc = motionArgs.forward ? 1 : -1;
for (var i = 0; i < repeat; i++) {
if ((!motionArgs.forward && line === cm.firstLine() ) ||
(motionArgs.forward && line == cm.lastLine())) {
break;
}
line += inc;
while (line !== cm.firstLine() && line != cm.lastLine() && cm.getLine(line)) {
line += inc;
}
}
return { line: line, ch: 0 };
},
moveByWords: function(cm, motionArgs) {
return moveToWord(cm, motionArgs.repeat, !!motionArgs.forward,
!!motionArgs.wordEnd, !!motionArgs.bigWord);
},
moveTillCharacter: function(cm, motionArgs) {
var repeat = motionArgs.repeat;
var curEnd = moveToCharacter(cm, repeat, motionArgs.forward,
motionArgs.selectedCharacter);
var increment = motionArgs.forward ? -1 : 1;
curEnd.ch += increment;
return curEnd;
},
moveToCharacter: function(cm, motionArgs) {
var repeat = motionArgs.repeat;
return moveToCharacter(cm, repeat, motionArgs.forward,
motionArgs.selectedCharacter);
},
moveToColumn: function(cm, motionArgs, vim) {
var repeat = motionArgs.repeat;
// repeat is equivalent to which column we want to move to!
vim.lastHPos = repeat - 1;
vim.lastHSPos = cm.charCoords(cm.getCursor(),"div").left;
return moveToColumn(cm, repeat);
},
moveToEol: function(cm, motionArgs, vim) {
var cur = cm.getCursor();
vim.lastHPos = Infinity;
var retval={ line: cur.line + motionArgs.repeat - 1, ch: Infinity }
var end=cm.clipPos(retval);
end.ch--;
vim.lastHSPos = cm.charCoords(end,"div").left;
return retval;
},
moveToFirstNonWhiteSpaceCharacter: function(cm) {
// Go to the start of the line where the text begins, or the end for
// whitespace-only lines
var cursor = cm.getCursor();
var line = cm.getLine(cursor.line);
return { line: cursor.line,
ch: findFirstNonWhiteSpaceCharacter(cm.getLine(cursor.line)) };
},
moveToMatchedSymbol: function(cm, motionArgs) {
var cursor = cm.getCursor();
var symbol = cm.getLine(cursor.line).charAt(cursor.ch);
if (isMatchableSymbol(symbol)) {
return findMatchedSymbol(cm, cm.getCursor(), motionArgs.symbol);
} else {
return cursor;
}
},
moveToStartOfLine: function(cm) {
var cursor = cm.getCursor();
return { line: cursor.line, ch: 0 };
},
moveToLineOrEdgeOfDocument: function(cm, motionArgs) {
var lineNum = motionArgs.forward ? cm.lastLine() : cm.firstLine();
if (motionArgs.repeatIsExplicit) {
lineNum = motionArgs.repeat - cm.getOption('firstLineNumber');
}
return { line: lineNum,
ch: findFirstNonWhiteSpaceCharacter(cm.getLine(lineNum)) };
},
textObjectManipulation: function(cm, motionArgs) {
var character = motionArgs.selectedCharacter;
// Inclusive is the difference between a and i
// TODO: Instead of using the additional text object map to perform text
// object operations, merge the map into the defaultKeyMap and use
// motionArgs to define behavior. Define separate entries for 'aw',
// 'iw', 'a[', 'i[', etc.
var inclusive = !motionArgs.textObjectInner;
if (!textObjects[character]) {
// No text object defined for this, don't move.
return null;
}
var tmp = textObjects[character](cm, inclusive);
var start = tmp.start;
var end = tmp.end;
return [start, end];
}
};
var operators = {
change: function(cm, operatorArgs, vim, curStart, curEnd) {
getVimGlobalState().registerController.pushText(
operatorArgs.registerName, 'change', cm.getRange(curStart, curEnd),
operatorArgs.linewise);
if (operatorArgs.linewise) {
// Delete starting at the first nonwhitespace character of the first
// line, instead of from the start of the first line. This way we get
// an indent when we get into insert mode. This behavior isn't quite
// correct because we should treat this as a completely new line, and
// indent should be whatever codemirror thinks is the right indent.
// But cm.indentLine doesn't seem work on empty lines.
// TODO: Fix the above.
curStart.ch =
findFirstNonWhiteSpaceCharacter(cm.getLine(curStart.line));
// Insert an additional newline so that insert mode can start there.
// curEnd should be on the first character of the new line.
cm.replaceRange('\n', curStart, curEnd);
} else {
cm.replaceRange('', curStart, curEnd);
}
cm.setCursor(curStart);
},
// delete is a javascript keyword.
'delete': function(cm, operatorArgs, vim, curStart, curEnd) {
getVimGlobalState().registerController.pushText(
operatorArgs.registerName, 'delete', cm.getRange(curStart, curEnd),
operatorArgs.linewise);
cm.replaceRange('', curStart, curEnd);
if (operatorArgs.linewise) {
cm.setCursor(motions.moveToFirstNonWhiteSpaceCharacter(cm));
} else {
cm.setCursor(curStart);
}
},
indent: function(cm, operatorArgs, vim, curStart, curEnd) {
var startLine = curStart.line;
var endLine = curEnd.line;
// In visual mode, n> shifts the selection right n times, instead of
// shifting n lines right once.
var repeat = (vim.visualMode) ? operatorArgs.repeat : 1;
if (operatorArgs.linewise) {
// The only way to delete a newline is to delete until the start of
// the next line, so in linewise mode evalInput will include the next
// line. We don't want this in indent, so we go back a line.
endLine--;
}
for (var i = startLine; i <= endLine; i++) {
for (var j = 0; j < repeat; j++) {
cm.indentLine(i, operatorArgs.indentRight);
}
}
cm.setCursor(curStart);
cm.setCursor(motions.moveToFirstNonWhiteSpaceCharacter(cm));
},
swapcase: function(cm, operatorArgs, vim, curStart, curEnd, curOriginal) {
var toSwap = cm.getRange(curStart, curEnd);
var swapped = '';
for (var i = 0; i < toSwap.length; i++) {
var character = toSwap.charAt(i);
swapped += isUpperCase(character) ? character.toLowerCase() :
character.toUpperCase();
}
cm.replaceRange(swapped, curStart, curEnd);
cm.setCursor(curOriginal);
},
yank: function(cm, operatorArgs, vim, curStart, curEnd, curOriginal) {
getVimGlobalState().registerController.pushText(
operatorArgs.registerName, 'yank',
cm.getRange(curStart, curEnd), operatorArgs.linewise);
cm.setCursor(curOriginal);
}
};
var actions = {
scrollToCursor: function(cm, actionArgs) {
var lineNum = cm.getCursor().line;
var heightProp = window.getComputedStyle(cm.getScrollerElement()).
getPropertyValue('height');
var height = parseInt(heightProp);
var y = cm.charCoords({line: lineNum, ch: 0}, "local").top;
var halfHeight = parseInt(height) / 2;
switch (actionArgs.position) {
case 'center': y = y - (height / 2) + 10;
break;
case 'bottom': y = y - height;
break;
case 'top': break;
}
cm.scrollTo(null, y);
// The calculations are slightly off, use scrollIntoView to nudge the
// view into the right place.
cm.scrollIntoView();
},
enterInsertMode: function(cm, actionArgs) {
var insertAt = (actionArgs) ? actionArgs.insertAt : null;
if (insertAt == 'eol') {
var cursor = cm.getCursor();
cursor = { line: cursor.line, ch: lineLength(cm, cursor.line) };
cm.setCursor(cursor);
} else if (insertAt == 'charAfter') {
cm.setCursor(offsetCursor(cm.getCursor(), 0, 1));
}
cm.setOption('keyMap', 'vim-insert');
},
toggleVisualMode: function(cm, actionArgs, vim) {
var repeat = actionArgs.repeat;
var curStart = cm.getCursor();
var curEnd;
// TODO: The repeat should actually select number of characters/lines
// equal to the repeat times the size of the previous visual
// operation.
if (!vim.visualMode) {
vim.visualMode = true;
vim.visualLine = !!actionArgs.linewise;
if (vim.visualLine) {
curStart.ch = 0;
curEnd = clipCursorToContent(cm, {
line: curStart.line + repeat - 1,
ch: lineLength(cm, curStart.line)
}, true /** includeLineBreak */);
} else {
curEnd = clipCursorToContent(cm, {
line: curStart.line,
ch: curStart.ch + repeat
}, true /** includeLineBreak */);
}
// Make the initial selection.
if (!actionArgs.repeatIsExplicit && !vim.visualLine) {
// This is a strange case. Here the implicit repeat is 1. The
// following commands lets the cursor hover over the 1 character
// selection.
cm.setCursor(curEnd);
cm.setSelection(curEnd, curStart);
} else {
cm.setSelection(curStart, curEnd);
}
} else {
curStart = cm.getCursor('anchor');
curEnd = cm.getCursor('head');
if (!vim.visualLine && actionArgs.linewise) {
// Shift-V pressed in characterwise visual mode. Switch to linewise
// visual mode instead of exiting visual mode.
vim.visualLine = true;
curStart.ch = cursorIsBefore(curStart, curEnd) ? 0 :
lineLength(cm, curStart.line);
curEnd.ch = cursorIsBefore(curStart, curEnd) ?
lineLength(cm, curEnd.line) : 0;
cm.setSelection(curStart, curEnd);
} else if (vim.visualLine && !actionArgs.linewise) {
// v pressed in linewise visual mode. Switch to characterwise visual
// mode instead of exiting visual mode.
vim.visualLine = false;
} else {
exitVisualMode(cm, vim);
}
}
updateMark(cm, vim, '<', cursorIsBefore(curStart, curEnd) ? curStart
: curEnd);
updateMark(cm, vim, '>', cursorIsBefore(curStart, curEnd) ? curEnd
: curStart);
},
joinLines: function(cm, actionArgs, vim) {
var curStart, curEnd;
if (vim.visualMode) {
curStart = cm.getCursor('anchor');
curEnd = cm.getCursor('head');
curEnd.ch = lineLength(cm, curEnd.line) - 1;
} else {
// Repeat is the number of lines to join. Minimum 2 lines.
var repeat = Math.max(actionArgs.repeat, 2);
curStart = cm.getCursor();
curEnd = clipCursorToContent(cm, { line: curStart.line + repeat - 1,
ch: Infinity });
}
var finalCh = 0;
cm.operation(function() {
for (var i = curStart.line; i < curEnd.line; i++) {
finalCh = lineLength(cm, curStart.line);
var tmp = { line: curStart.line + 1,
ch: lineLength(cm, curStart.line + 1) };
var text = cm.getRange(curStart, tmp);
text = text.replace(/\n\s*/g, ' ');
cm.replaceRange(text, curStart, tmp);
}
var curFinalPos = { line: curStart.line, ch: finalCh };
cm.setCursor(curFinalPos);
});
},
newLineAndEnterInsertMode: function(cm, actionArgs) {
var insertAt = cm.getCursor();
if (insertAt.line === cm.firstLine() && !actionArgs.after) {
// Special case for inserting newline before start of document.
cm.replaceRange('\n', { line: cm.firstLine(), ch: 0 });
cm.setCursor(cm.firstLine(), 0);
} else {
insertAt.line = (actionArgs.after) ? insertAt.line :
insertAt.line - 1;
insertAt.ch = lineLength(cm, insertAt.line);
cm.setCursor(insertAt);
var newlineFn = CodeMirror.commands.newlineAndIndentContinueComment ||
CodeMirror.commands.newlineAndIndent;
newlineFn(cm);
}
this.enterInsertMode(cm);
},
paste: function(cm, actionArgs, vim) {
var cur = cm.getCursor();
var register = getVimGlobalState().registerController.getRegister(
actionArgs.registerName);
if (!register.text) {
return;
}
for (var text = '', i = 0; i < actionArgs.repeat; i++) {
text += register.text;
}
var linewise = register.linewise;
if (linewise) {
if (actionArgs.after) {
// Move the newline at the end to the start instead, and paste just
// before the newline character of the line we are on right now.
text = '\n' + text.slice(0, text.length - 1);
cur.ch = lineLength(cm, cur.line);
} else {
cur.ch = 0;
}
} else {
cur.ch += actionArgs.after ? 1 : 0;
}
cm.replaceRange(text, cur);
// Now fine tune the cursor to where we want it.
var curPosFinal;
var idx;
if (linewise && actionArgs.after) {
curPosFinal = { line: cur.line + 1,
ch: findFirstNonWhiteSpaceCharacter(cm.getLine(cur.line + 1)) };
} else if (linewise && !actionArgs.after) {
curPosFinal = { line: cur.line,
ch: findFirstNonWhiteSpaceCharacter(cm.getLine(cur.line)) };
} else if (!linewise && actionArgs.after) {
idx = cm.indexFromPos(cur);
curPosFinal = cm.posFromIndex(idx + text.length - 1);
} else {
idx = cm.indexFromPos(cur);
curPosFinal = cm.posFromIndex(idx + text.length);
}
cm.setCursor(curPosFinal);
},
undo: function(cm, actionArgs) {
repeatFn(cm, CodeMirror.commands.undo, actionArgs.repeat)();
},
redo: function(cm, actionArgs) {
repeatFn(cm, CodeMirror.commands.redo, actionArgs.repeat)();
},
setRegister: function(cm, actionArgs, vim) {
vim.inputState.registerName = actionArgs.selectedCharacter;
},
setMark: function(cm, actionArgs, vim) {
var markName = actionArgs.selectedCharacter;
updateMark(cm, vim, markName, cm.getCursor());
},
replace: function(cm, actionArgs) {
var replaceWith = actionArgs.selectedCharacter;
var curStart = cm.getCursor();
var line = cm.getLine(curStart.line);
var replaceTo = curStart.ch + actionArgs.repeat;
if (replaceTo > line.length) {
return;
}
var curEnd = { line: curStart.line, ch: replaceTo };
var replaceWithStr = '';
for (var i = 0; i < curEnd.ch - curStart.ch; i++) {
replaceWithStr += replaceWith;
}
cm.replaceRange(replaceWithStr, curStart, curEnd);
cm.setCursor(offsetCursor(curEnd, 0, -1));
}
};
var textObjects = {
// TODO: lots of possible exceptions that can be thrown here. Try da(
// outside of a () block.
// TODO: implement text objects for the reverse like }. Should just be
// an additional mapping after moving to the defaultKeyMap.
'w': function(cm, inclusive) {
return expandWordUnderCursor(cm, inclusive, true /** forward */,
false /** bigWord */);
},
'W': function(cm, inclusive) {
return expandWordUnderCursor(cm, inclusive,
true /** forward */, true /** bigWord */);
},
'{': function(cm, inclusive) {
return selectCompanionObject(cm, '}', inclusive);
},
'(': function(cm, inclusive) {
return selectCompanionObject(cm, ')', inclusive);
},
'[': function(cm, inclusive) {
return selectCompanionObject(cm, ']', inclusive);
},
'\'': function(cm, inclusive) {
return findBeginningAndEnd(cm, "'", inclusive);
},
'\"': function(cm, inclusive) {
return findBeginningAndEnd(cm, '"', inclusive);
}
};
/*
* Below are miscellaneous utility functions used by vim.js
*/
/**
* Clips cursor to ensure that line is within the buffer's range
* If includeLineBreak is true, then allow cur.ch == lineLength.
*/
function clipCursorToContent(cm, cur, includeLineBreak) {
var line = Math.min(Math.max(cm.firstLine(), cur.line), cm.lastLine() );
var maxCh = lineLength(cm, line) - 1;
maxCh = (includeLineBreak) ? maxCh + 1 : maxCh;
var ch = Math.min(Math.max(0, cur.ch), maxCh);
return { line: line, ch: ch };
}
// Merge arguments in place, for overriding arguments.
function mergeArgs(to, from) {
for (var prop in from) {
if (from.hasOwnProperty(prop)) {
to[prop] = from[prop];
}
}
}
function copyArgs(args) {
var ret = {};
for (var prop in args) {
if (args.hasOwnProperty(prop)) {
ret[prop] = args[prop];
}
}
return ret;
}
function offsetCursor(cur, offsetLine, offsetCh) {
return { line: cur.line + offsetLine, ch: cur.ch + offsetCh };
}
function arrayEq(a1, a2) {
if (a1.length != a2.length) {
return false;
}
for (var i = 0; i < a1.length; i++) {
if (a1[i] != a2[i]) {
return false;
}
}
return true;
}
function matchKeysPartial(pressed, mapped) {
for (var i = 0; i < pressed.length; i++) {
// 'character' means any character. For mark, register commads, etc.
if (pressed[i] != mapped[i] && mapped[i] != 'character') {
return false;
}
}
return true;
}
function arrayIsSubsetFromBeginning(small, big) {
for (var i = 0; i < small.length; i++) {
if (small[i] != big[i]) {
return false;
}
}
return true;
}
function repeatFn(cm, fn, repeat) {
return function() {
for (var i = 0; i < repeat; i++) {
fn(cm);
}
};
}
function copyCursor(cur) {
return { line: cur.line, ch: cur.ch };
}
function cursorEqual(cur1, cur2) {
return cur1.ch == cur2.ch && cur1.line == cur2.line;
}
function cursorIsBefore(cur1, cur2) {
if (cur1.line < cur2.line) {
return true;
} else if (cur1.line == cur2.line && cur1.ch < cur2.ch) {
return true;
}
return false;
}
function lineLength(cm, lineNum) {
return cm.getLine(lineNum).length;
}
function reverse(s){
return s.split("").reverse().join("");
}
function trim(s) {
if (s.trim) {
return s.trim();
} else {
return s.replace(/^\s+|\s+$/g, '');
}
}
function escapeRegex(s) {
return s.replace(/([.?*+$\[\]\/\\(){}|\-])/g, "\\$1");
}
function exitVisualMode(cm, vim) {
vim.visualMode = false;
vim.visualLine = false;
var selectionStart = cm.getCursor('anchor');
var selectionEnd = cm.getCursor('head');
if (!cursorEqual(selectionStart, selectionEnd)) {
// Clear the selection and set the cursor only if the selection has not
// already been cleared. Otherwise we risk moving the cursor somewhere
// it's not supposed to be.
cm.setCursor(clipCursorToContent(cm, selectionEnd));
}
}
// Remove any trailing newlines from the selection. For
// example, with the caret at the start of the last word on the line,
// 'dw' should word, but not the newline, while 'w' should advance the
// caret to the first character of the next line.
function clipToLine(cm, curStart, curEnd) {
var selection = cm.getRange(curStart, curEnd);
var lines = selection.split('\n');
if (lines.length > 1 && isWhiteSpaceString(lines.pop())) {
curEnd.line--;
curEnd.ch = lineLength(cm, curEnd.line);
}
}
// Expand the selection to line ends.
function expandSelectionToLine(cm, curStart, curEnd) {
curStart.ch = 0;
curEnd.ch = 0;
curEnd.line++;
}
function findFirstNonWhiteSpaceCharacter(text) {
if (!text) {
return 0;
}
var firstNonWS = text.search(/\S/);
return firstNonWS == -1 ? text.length : firstNonWS;
}
function expandWordUnderCursor(cm, inclusive, forward, bigWord, noSymbol) {
var cur = cm.getCursor();
var line = cm.getLine(cur.line);
var idx = cur.ch;
// Seek to first word or non-whitespace character, depending on if
// noSymbol is true.
var textAfterIdx = line.substring(idx);
var firstMatchedChar;
if (noSymbol) {
firstMatchedChar = textAfterIdx.search(/\w/);
} else {
firstMatchedChar = textAfterIdx.search(/\S/);
}
if (firstMatchedChar == -1) {
return null;
}
idx += firstMatchedChar;
textAfterIdx = line.substring(idx);
var textBeforeIdx = line.substring(0, idx);
var matchRegex;
// Greedy matchers for the "word" we are trying to expand.
if (bigWord) {
matchRegex = /^\S+/;
} else {
if ((/\w/).test(line.charAt(idx))) {
matchRegex = /^\w+/;
} else {
matchRegex = /^[^\w\s]+/;
}
}
var wordAfterRegex = matchRegex.exec(textAfterIdx);
var wordStart = idx;
var wordEnd = idx + wordAfterRegex[0].length - 1;
// TODO: Find a better way to do this. It will be slow on very long lines.
var wordBeforeRegex = matchRegex.exec(reverse(textBeforeIdx));
if (wordBeforeRegex) {
wordStart -= wordBeforeRegex[0].length;
}
if (inclusive) {
wordEnd++;
}
return { start: { line: cur.line, ch: wordStart },
end: { line: cur.line, ch: wordEnd }};
}
/*
* Returns the boundaries of the next word. If the cursor in the middle of
* the word, then returns the boundaries of the current word, starting at
* the cursor. If the cursor is at the start/end of a word, and we are going
* forward/backward, respectively, find the boundaries of the next word.
*
* @param {CodeMirror} cm CodeMirror object.
* @param {Cursor} cur The cursor position.
* @param {boolean} forward True to search forward. False to search
* backward.
* @param {boolean} bigWord True if punctuation count as part of the word.
* False if only [a-zA-Z0-9] characters count as part of the word.
* @return {Object{from:number, to:number, line: number}} The boundaries of
* the word, or null if there are no more words.
*/
// TODO: Treat empty lines (with no whitespace) as words.
function findWord(cm, cur, forward, bigWord) {
var lineNum = cur.line;
var pos = cur.ch;
var line = cm.getLine(lineNum);
var dir = forward ? 1 : -1;
var regexps = bigWord ? bigWordRegexp : wordRegexp;
while (true) {
var stop = (dir > 0) ? line.length : -1;
var wordStart = stop, wordEnd = stop;
// Find bounds of next word.
while (pos != stop) {
var foundWord = false;
for (var i = 0; i < regexps.length && !foundWord; ++i) {
if (regexps[i].test(line.charAt(pos))) {
wordStart = pos;
// Advance to end of word.
while (pos != stop && regexps[i].test(line.charAt(pos))) {
pos += dir;
}
wordEnd = pos;
foundWord = wordStart != wordEnd;
if (wordStart == cur.ch && lineNum == cur.line &&
wordEnd == wordStart + dir) {
// We started at the end of a word. Find the next one.
continue;
} else {
return {
from: Math.min(wordStart, wordEnd + 1),
to: Math.max(wordStart, wordEnd),
line: lineNum };
}
}
}
if (!foundWord) {
pos += dir;
}
}
// Advance to next/prev line.
lineNum += dir;
if (!isLine(cm, lineNum)) {
return null;
}
line = cm.getLine(lineNum);
pos = (dir > 0) ? 0 : line.length;
}
// Should never get here.
throw 'The impossible happened.';
}
/**
* @param {CodeMirror} cm CodeMirror object.
* @param {int} repeat Number of words to move past.
* @param {boolean} forward True to search forward. False to search
* backward.
* @param {boolean} wordEnd True to move to end of word. False to move to
* beginning of word.
* @param {boolean} bigWord True if punctuation count as part of the word.
* False if only alphabet characters count as part of the word.
* @return {Cursor} The position the cursor should move to.
*/
function moveToWord(cm, repeat, forward, wordEnd, bigWord) {
var cur = cm.getCursor();
for (var i = 0; i < repeat; i++) {
var startCh = cur.ch, startLine = cur.line, word;
var movedToNextWord = false;
while (!movedToNextWord) {
// Search and advance.
word = findWord(cm, cur, forward, bigWord);
movedToNextWord = true;
if (word) {
// Move to the word we just found. If by moving to the word we end
// up in the same spot, then move an extra character and search
// again.
cur.line = word.line;
if (forward && wordEnd) {
// 'e'
cur.ch = word.to - 1;
} else if (forward && !wordEnd) {
// 'w'
if (inRangeInclusive(cur.ch, word.from, word.to) &&
word.line == startLine) {
// Still on the same word. Go to the next one.
movedToNextWord = false;
cur.ch = word.to - 1;
} else {
cur.ch = word.from;
}
} else if (!forward && wordEnd) {
// 'ge'
if (inRangeInclusive(cur.ch, word.from, word.to) &&
word.line == startLine) {
// still on the same word. Go to the next one.
movedToNextWord = false;
cur.ch = word.from;
} else {
cur.ch = word.to;
}
} else if (!forward && !wordEnd) {
// 'b'
cur.ch = word.from;
}
} else {
// No more words to be found. Move to the end.
if (forward) {
return { line: cur.line, ch: lineLength(cm, cur.line) };
} else {
return { line: cur.line, ch: 0 };
}
}
}
}
return cur;
}
function moveToCharacter(cm, repeat, forward, character) {
var cur = cm.getCursor();
var start = cur.ch;
var idx;
for (var i = 0; i < repeat; i ++) {
var line = cm.getLine(cur.line);
idx = charIdxInLine(start, line, character, forward, true);
if (idx == -1) {
return cur;
}
start = idx;
}
return { line: cm.getCursor().line, ch: idx };
}
function moveToColumn(cm, repeat) {
// repeat is always >= 1, so repeat - 1 always corresponds
// to the column we want to go to.
var line = cm.getCursor().line;
return clipCursorToContent(cm, { line: line, ch: repeat - 1 });
}
function updateMark(cm, vim, markName, pos) {
if (!inArray(markName, validMarks)) {
return;
}
if (vim.marks[markName]) {
vim.marks[markName].clear();
}
vim.marks[markName] = cm.setBookmark(pos);
}
function charIdxInLine(start, line, character, forward, includeChar) {
// Search for char in line.
// motion_options: {forward, includeChar}
// If includeChar = true, include it too.
// If forward = true, search forward, else search backwards.
// If char is not found on this line, do nothing
var idx;
if (forward) {
idx = line.indexOf(character, start + 1);
if (idx != -1 && !includeChar) {
idx -= 1;
}
} else {
idx = line.lastIndexOf(character, start - 1);
if (idx != -1 && !includeChar) {
idx += 1;
}
}
return idx;
}
function findMatchedSymbol(cm, cur, symb) {
var line = cur.line;
symb = symb ? symb : cm.getLine(line).charAt(cur.ch);
// Are we at the opening or closing char
var forwards = inArray(symb, ['(', '[', '{']);
var reverseSymb = ({
'(': ')', ')': '(',
'[': ']', ']': '[',
'{': '}', '}': '{'})[symb];
// Couldn't find a matching symbol, abort
if (!reverseSymb) {
return cur;
}
// set our increment to move forward (+1) or backwards (-1)
// depending on which bracket we're matching
var increment = ({'(': 1, '{': 1, '[': 1})[symb] || -1;
var depth = 1, nextCh = symb, index = cur.ch, lineText = cm.getLine(line);
// Simple search for closing paren--just count openings and closings till
// we find our match
// TODO: use info from CodeMirror to ignore closing brackets in comments
// and quotes, etc.
while (nextCh && depth > 0) {
index += increment;
nextCh = lineText.charAt(index);
if (!nextCh) {
line += increment;
lineText = cm.getLine(line) || '';
if (increment > 0) {
index = 0;
} else {
var lineLen = lineText.length;
index = (lineLen > 0) ? (lineLen-1) : 0;
}
nextCh = lineText.charAt(index);
}
if (nextCh === symb) {
depth++;
} else if (nextCh === reverseSymb) {
depth--;
}
}
if (nextCh) {
return { line: line, ch: index };
}
return cur;
}
function selectCompanionObject(cm, revSymb, inclusive) {
var cur = cm.getCursor();
var end = findMatchedSymbol(cm, cur, revSymb);
var start = findMatchedSymbol(cm, end);
start.ch += inclusive ? 1 : 0;
end.ch += inclusive ? 0 : 1;
return { start: start, end: end };
}
function regexLastIndexOf(string, pattern, startIndex) {
for (var i = !startIndex ? string.length : startIndex;
i >= 0; --i) {
if (pattern.test(string.charAt(i))) {
return i;
}
}
return -1;
}
// Takes in a symbol and a cursor and tries to simulate text objects that
// have identical opening and closing symbols
// TODO support across multiple lines
function findBeginningAndEnd(cm, symb, inclusive) {
var cur = cm.getCursor();
var line = cm.getLine(cur.line);
var chars = line.split('');
var start, end, i, len;
var firstIndex = chars.indexOf(symb);
// the decision tree is to always look backwards for the beginning first,
// but if the cursor is in front of the first instance of the symb,
// then move the cursor forward
if (cur.ch < firstIndex) {
cur.ch = firstIndex;
// Why is this line even here???
// cm.setCursor(cur.line, firstIndex+1);
}
// otherwise if the cursor is currently on the closing symbol
else if (firstIndex < cur.ch && chars[cur.ch] == symb) {
end = cur.ch; // assign end to the current cursor
--cur.ch; // make sure to look backwards
}
// if we're currently on the symbol, we've got a start
if (chars[cur.ch] == symb && !end) {
start = cur.ch + 1; // assign start to ahead of the cursor
} else {
// go backwards to find the start
for (i = cur.ch; i > -1 && !start; i--) {
if (chars[i] == symb) {
start = i + 1;
}
}
}
// look forwards for the end symbol
if (start && !end) {
for (i = start, len = chars.length; i < len && !end; i++) {
if (chars[i] == symb) {
end = i;
}
}
}
// nothing found
if (!start || !end) {
return { start: cur, end: cur };
}
// include the symbols
if (inclusive) {
--start; ++end;
}
return {
start: { line: cur.line, ch: start },
end: { line: cur.line, ch: end }
};
}
// Search functions
function SearchState() {
// Highlighted text that match the query.
this.marked = null;
}
SearchState.prototype = {
getQuery: function() {
return getVimGlobalState().query;
},
setQuery: function(query) {
getVimGlobalState().query = query;
},
getMarked: function() {
return this.marked;
},
setMarked: function(marked) {
this.marked = marked;
},
getOverlay: function() {
return this.searchOverlay;
},
setOverlay: function(overlay) {
this.searchOverlay = overlay;
},
isReversed: function() {
return getVimGlobalState().isReversed;
},
setReversed: function(reversed) {
getVimGlobalState().isReversed = reversed;
}
};
function getSearchState(cm) {
var vim = getVimState(cm);
return vim.searchState_ || (vim.searchState_ = new SearchState());
}
function dialog(cm, text, shortText, callback, initialValue) {
if (cm.openDialog) {
cm.openDialog(text, callback, { bottom: true, value: initialValue });
}
else {
callback(prompt(shortText, ""));
}
}
function findUnescapedSlashes(str) {
var escapeNextChar = false;
var slashes = [];
for (var i = 0; i < str.length; i++) {
var c = str.charAt(i);
if (!escapeNextChar && c == '/') {
slashes.push(i);
}
escapeNextChar = (c == '\\');
}
return slashes;
}
/**
* Extract the regular expression from the query and return a Regexp object.
* Returns null if the query is blank.
* If ignoreCase is passed in, the Regexp object will have the 'i' flag set.
* If smartCase is passed in, and the query contains upper case letters,
* then ignoreCase is overridden, and the 'i' flag will not be set.
* If the query contains the /i in the flag part of the regular expression,
* then both ignoreCase and smartCase are ignored, and 'i' will be passed
* through to the Regex object.
*/
function parseQuery(cm, query, ignoreCase, smartCase) {
// First try to extract regex + flags from the input. If no flags found,
// extract just the regex. IE does not accept flags directly defined in
// the regex string in the form /regex/flags
var slashes = findUnescapedSlashes(query);
var regexPart;
var forceIgnoreCase;
if (!slashes.length) {
// Query looks like 'regexp'
regexPart = query;
} else {
// Query looks like 'regexp/...'
regexPart = query.substring(0, slashes[0]);
var flagsPart = query.substring(slashes[0]);
forceIgnoreCase = (flagsPart.indexOf('i') != -1);
}
if (!regexPart) {
return null;
}
if (smartCase) {
ignoreCase = (/^[^A-Z]*$/).test(regexPart);
}
try {
var regexp = new RegExp(regexPart,
(ignoreCase || forceIgnoreCase) ? 'i' : undefined);
return regexp;
} catch (e) {
showConfirm(cm, 'Invalid regex: ' + regexPart);
}
}
function showConfirm(cm, text) {
if (cm.openConfirm) {
cm.openConfirm('<span style="color: red">' + text +
'</span> <button type="button">OK</button>', function() {},
{bottom: true});
} else {
alert(text);
}
}
function makePrompt(prefix, desc) {
var raw = '';
if (prefix) {
raw += '<span style="font-family: monospace">' + prefix + '</span>';
}
raw += '<input type="text"/> ' +
'<span style="color: #888">';
if (desc) {
raw += '<span style="color: #888">';
raw += desc;
raw += '</span>';
}
return raw;
}
var searchPromptDesc = '(Javascript regexp)';
function showPrompt(cm, onPromptClose, prefix, desc, initialValue) {
var shortText = (prefix || '') + ' ' + (desc || '');
dialog(cm, makePrompt(prefix, desc), shortText, onPromptClose,
initialValue);
}
function regexEqual(r1, r2) {
if (r1 instanceof RegExp && r2 instanceof RegExp) {
var props = ["global", "multiline", "ignoreCase", "source"];
for (var i = 0; i < props.length; i++) {
var prop = props[i];
if (r1[prop] !== r2[prop]) {
return(false);
}
}
return(true);
}
return(false);
}
function updateSearchQuery(cm, rawQuery, ignoreCase, smartCase) {
cm.operation(function() {
var state = getSearchState(cm);
if (!rawQuery) {
return;
}
var query = parseQuery(cm, rawQuery, !!ignoreCase, !!smartCase);
if (!query) {
return;
}
if (regexEqual(query, state.getQuery())) {
return;
}
clearSearchHighlight(cm);
highlightSearchMatches(cm, query);
state.setQuery(query);
});
}
function searchOverlay(query) {
return {
token: function(stream) {
var match = stream.match(query, false);
if (match) {
if (!stream.sol()) {
// Backtrack 1 to match \b
stream.backUp(1);
if (!query.exec(stream.next() + match[0])) {
stream.next();
return null;
}
}
stream.match(query);
return "searching";
}
while (!stream.eol()) {
stream.next();
if (stream.match(query, false)) break;
}
},
query: query
};
}
function highlightSearchMatches(cm, query) {
if (cm.addOverlay) {
var overlay = getSearchState(cm).getOverlay();
if (!overlay || query != overlay.query) {
if (overlay) {
cm.removeOverlay(overlay);
}
overlay = searchOverlay(query);
cm.addOverlay(overlay);
getSearchState(cm).setOverlay(overlay);
}
} else {
// TODO: Highlight only text inside the viewport. Highlighting everything
// is inefficient and expensive.
if (cm.lineCount() < 2000) { // This is too expensive on big documents.
var marked = [];
for (var cursor = cm.getSearchCursor(query);
cursor.findNext();) {
marked.push(cm.markText(cursor.from(), cursor.to(),
{ className: 'cm-searching' }));
}
getSearchState(cm).setMarked(marked);
}
}
}
function findNext(cm, prev, repeat) {
return cm.operation(function() {
var state = getSearchState(cm);
var query = state.getQuery();
if (!query) {
return;
}
if (!state.getMarked()) {
highlightSearchMatches(cm, query);
}
var pos = cm.getCursor();
// If search is initiated with ? instead of /, negate direction.
prev = (state.isReversed()) ? !prev : prev;
if (!prev) {
pos.ch += 1;
}
var cursor = cm.getSearchCursor(query, pos);
for (var i = 0; i < repeat; i++) {
if (!cursor.find(prev)) {
// SearchCursor may have returned null because it hit EOF, wrap
// around and try again.
cursor = cm.getSearchCursor(query,
(prev) ? { line: cm.lastLine() } : {line: cm.firstLine(), ch: 0} );
if (!cursor.find(prev)) {
return;
}
}
}
return cursor.from();
});}
function clearSearchHighlight(cm) {
if (cm.addOverlay) {
cm.removeOverlay(getSearchState(cm).getOverlay());
getSearchState(cm).setOverlay(null);
} else {
cm.operation(function() {
var state = getSearchState(cm);
if (!state.getQuery()) {
return;
}
var marked = state.getMarked();
if (!marked) {
return;
}
for (var i = 0; i < marked.length; ++i) {
marked[i].clear();
}
state.setMarked(null);
});
}
}
/**
* Check if pos is in the specified range, INCLUSIVE.
* Range can be specified with 1 or 2 arguments.
* If the first range argument is an array, treat it as an array of line
* numbers. Match pos against any of the lines.
* If the first range argument is a number,
* if there is only 1 range argument, check if pos has the same line
* number
* if there are 2 range arguments, then check if pos is in between the two
* range arguments.
*/
function isInRange(pos, start, end) {
if (typeof pos != 'number') {
// Assume it is a cursor position. Get the line number.
pos = pos.line;
}
if (start instanceof Array) {
return inArray(pos, start);
} else {
if (end) {
return (pos >= start && pos <= end);
} else {
return pos == start;
}
}
}
// Ex command handling
// Care must be taken when adding to the default Ex command map. For any
// pair of commands that have a shared prefix, at least one of their
// shortNames must not match the prefix of the other command.
var defaultExCommandMap = [
{ name: 'map', type: 'builtIn' },
{ name: 'write', shortName: 'w', type: 'builtIn' },
{ name: 'undo', shortName: 'u', type: 'builtIn' },
{ name: 'redo', shortName: 'red', type: 'builtIn' },
{ name: 'substitute', shortName: 's', type: 'builtIn'},
{ name: 'nohlsearch', shortName: 'noh', type: 'builtIn'}
];
Vim.ExCommandDispatcher = function() {
this.buildCommandMap_();
};
Vim.ExCommandDispatcher.prototype = {
processCommand: function(cm, input) {
var inputStream = new CodeMirror.StringStream(input);
var params = {};
params.input = input;
try {
this.parseInput_(cm, inputStream, params);
} catch(e) {
showConfirm(cm, e);
return;
}
var commandName;
if (!params.commandName) {
// If only a line range is defined, move to the line.
if (params.line !== undefined) {
commandName = 'move';
}
} else {
var command = this.matchCommand_(params.commandName);
if (command) {
commandName = command.name;
this.parseCommandArgs_(inputStream, params, command);
if (command.type == 'exToKey') {
// Handle Ex to Key mapping.
for (var i = 0; i < command.toKeys.length; i++) {
vim.handleKey(cm, command.toKeys[i]);
}
return;
} else if (command.type == 'exToEx') {
// Handle Ex to Ex mapping.
this.processCommand(cm, command.toInput);
return;
}
}
}
if (!commandName) {
showConfirm(cm, 'Not an editor command ":' + input + '"');
return;
}
exCommands[commandName](cm, params);
},
parseInput_: function(cm, inputStream, result) {
inputStream.eatWhile(':');
// Parse range.
if (inputStream.eat('%')) {
result.line = cm.firstLine();
result.lineEnd = cm.lastLine();
} else {
result.line = this.parseLineSpec_(cm, inputStream);
if (result.line !== undefined && inputStream.eat(',')) {
result.lineEnd = this.parseLineSpec_(cm, inputStream);
}
}
// Parse command name.
var commandMatch = inputStream.match(/^(\w+)/);
if (commandMatch) {
result.commandName = commandMatch[1];
} else {
result.commandName = inputStream.match(/.*/)[0];
}
return result;
},
parseLineSpec_: function(cm, inputStream) {
var numberMatch = inputStream.match(/^(\d+)/);
if (numberMatch) {
return parseInt(numberMatch[1], 10) - 1;
}
switch (inputStream.next()) {
case '.':
return cm.getCursor().line;
case '$':
return cm.lastLine();
case '\'':
var mark = getVimState(cm).marks[inputStream.next()];
if (mark && mark.find()) {
return mark.find().line;
} else {
throw "Mark not set";
}
break;
default:
inputStream.backUp(1);
return cm.getCursor().line;
}
},
parseCommandArgs_: function(inputStream, params, command) {
if (inputStream.eol()) {
return;
}
params.argString = inputStream.match(/.*/)[0];
// Parse command-line arguments
var delim = command.argDelimiter || /\s+/;
var args = trim(params.argString).split(delim);
if (args.length && args[0]) {
params.args = args;
}
},
matchCommand_: function(commandName) {
// Return the command in the command map that matches the shortest
// prefix of the passed in command name. The match is guaranteed to be
// unambiguous if the defaultExCommandMap's shortNames are set up
// correctly. (see @code{defaultExCommandMap}).
for (var i = commandName.length; i > 0; i--) {
var prefix = commandName.substring(0, i);
if (this.commandMap_[prefix]) {
var command = this.commandMap_[prefix];
if (command.name.indexOf(commandName) === 0) {
return command;
}
}
}
return null;
},
buildCommandMap_: function() {
this.commandMap_ = {};
for (var i = 0; i < defaultExCommandMap.length; i++) {
var command = defaultExCommandMap[i];
var key = command.shortName || command.name;
this.commandMap_[key] = command;
}
},
map: function(lhs, rhs) {
if (lhs != ':' && lhs.charAt(0) == ':') {
var commandName = lhs.substring(1);
if (rhs != ':' && rhs.charAt(0) == ':') {
// Ex to Ex mapping
this.commandMap_[commandName] = {
name: commandName,
type: 'exToEx',
toInput: rhs.substring(1)
};
} else {
// Ex to key mapping
this.commandMap_[commandName] = {
name: commandName,
type: 'exToKey',
toKeys: parseKeyString(rhs)
};
}
} else {
if (rhs != ':' && rhs.charAt(0) == ':') {
// Key to Ex mapping.
defaultKeymap.unshift({
keys: parseKeyString(lhs),
type: 'keyToEx',
exArgs: { input: rhs.substring(1) }});
} else {
// Key to key mapping
defaultKeymap.unshift({
keys: parseKeyString(lhs),
type: 'keyToKey',
toKeys: parseKeyString(rhs)
});
}
}
}
};
// Converts a key string sequence of the form a<C-w>bd<Left> into Vim's
// keymap representation.
function parseKeyString(str) {
var idx = 0;
var keys = [];
while (idx < str.length) {
if (str.charAt(idx) != '<') {
keys.push(str.charAt(idx));
idx++;
continue;
}
// Vim key notation here means desktop Vim key-notation.
// See :help key-notation in desktop Vim.
var vimKeyNotationStart = ++idx;
while (str.charAt(idx++) != '>') {}
var vimKeyNotation = str.substring(vimKeyNotationStart, idx - 1);
var mod='';
var match = (/^C-(.+)$/).exec(vimKeyNotation);
if (match) {
mod='Ctrl-';
vimKeyNotation=match[1];
}
var key;
switch (vimKeyNotation) {
case 'BS':
key = 'Backspace';
break;
case 'CR':
key = 'Enter';
break;
case 'Del':
key = 'Delete';
break;
default:
key = vimKeyNotation;
break;
}
keys.push(mod + key);
}
return keys;
}
var exCommands = {
map: function(cm, params) {
var mapArgs = params.args;
if (!mapArgs || mapArgs.length < 2) {
if (cm) {
showConfirm(cm, 'Invalid mapping: ' + params.input);
}
return;
}
exCommandDispatcher.map(mapArgs[0], mapArgs[1], cm);
},
move: function(cm, params) {
commandDispatcher.processMotion(cm, getVimState(cm), {
motion: 'moveToLineOrEdgeOfDocument',
motionArgs: { forward: false, explicitRepeat: true,
linewise: true, repeat: params.line+1 }});
},
substitute: function(cm, params) {
var argString = params.argString;
var slashes = findUnescapedSlashes(argString);
if (slashes[0] !== 0) {
showConfirm(cm, 'Substitutions should be of the form ' +
':s/pattern/replace/');
return;
}
var regexPart = argString.substring(slashes[0] + 1, slashes[1]);
var replacePart = '';
var flagsPart;
var count;
if (slashes[1]) {
replacePart = argString.substring(slashes[1] + 1, slashes[2]);
}
if (slashes[2]) {
// After the 3rd slash, we can have flags followed by a space followed
// by count.
var trailing = argString.substring(slashes[2] + 1).split(' ');
flagsPart = trailing[0];
count = parseInt(trailing[1]);
}
if (flagsPart) {
regexPart = regexPart + '/' + flagsPart;
}
if (regexPart) {
// If regex part is empty, then use the previous query. Otherwise use
// the regex part as the new query.
updateSearchQuery(cm, regexPart, true /** ignoreCase */,
true /** smartCase */);
}
var state = getSearchState(cm);
var query = state.getQuery();
var lineStart = params.line || cm.firstLine();
var lineEnd = params.lineEnd || lineStart;
if (count) {
lineStart = lineEnd;
lineEnd = lineStart + count - 1;
}
var startPos = clipCursorToContent(cm, { line: lineStart, ch: 0 });
function doReplace() {
for (var cursor = cm.getSearchCursor(query, startPos);
cursor.findNext() &&
isInRange(cursor.from(), lineStart, lineEnd);) {
var text = cm.getRange(cursor.from(), cursor.to());
var newText = text.replace(query, replacePart);
cursor.replace(newText);
}
var vim = getVimState(cm);
if (vim.visualMode) {
exitVisualMode(cm, vim);
}
}
if (cm.compoundChange) {
// Only exists in v2
cm.compoundChange(doReplace);
} else {
cm.operation(doReplace);
}
},
redo: CodeMirror.commands.redo,
undo: CodeMirror.commands.undo,
write: function(cm) {
if (CodeMirror.commands.save) {
// If a save command is defined, call it.
CodeMirror.commands.save(cm);
} else {
// Saves to text area if no save command is defined.
cm.save();
}
},
nohlsearch: function(cm) {
clearSearchHighlight(cm);
}
};
var exCommandDispatcher = new Vim.ExCommandDispatcher();
// Register Vim with CodeMirror
function buildVimKeyMap() {
/**
* Handle the raw key event from CodeMirror. Translate the
* Shift + key modifier to the resulting letter, while preserving other
* modifers.
*/
// TODO: Figure out a way to catch capslock.
function handleKeyEvent_(cm, key, modifier) {
if (isUpperCase(key)) {
// Convert to lower case if shift is not the modifier since the key
// we get from CodeMirror is always upper case.
if (modifier == 'Shift') {
modifier = null;
}
else {
key = key.toLowerCase();
}
}
if (modifier) {
// Vim will parse modifier+key combination as a single key.
key = modifier + '-' + key;
}
vim.handleKey(cm, key);
}
// Closure to bind CodeMirror, key, modifier.
function keyMapper(key, modifier) {
return function(cm) {
handleKeyEvent_(cm, key, modifier);
};
}
var modifiers = ['Shift', 'Ctrl'];
var keyMap = {
'nofallthrough': true,
'style': 'fat-cursor'
};
function bindKeys(keys, modifier) {
for (var i = 0; i < keys.length; i++) {
var key = keys[i];
if (!modifier && inArray(key, specialSymbols)) {
// Wrap special symbols with '' because that's how CodeMirror binds
// them.
key = "'" + key + "'";
}
if (modifier) {
keyMap[modifier + '-' + key] = keyMapper(keys[i], modifier);
} else {
keyMap[key] = keyMapper(keys[i]);
}
}
}
bindKeys(upperCaseAlphabet);
bindKeys(upperCaseAlphabet, 'Shift');
bindKeys(upperCaseAlphabet, 'Ctrl');
bindKeys(specialSymbols);
bindKeys(specialSymbols, 'Ctrl');
bindKeys(numbers);
bindKeys(numbers, 'Ctrl');
bindKeys(specialKeys);
bindKeys(specialKeys, 'Ctrl');
return keyMap;
}
CodeMirror.keyMap.vim = buildVimKeyMap();
function exitInsertMode(cm) {
cm.setCursor(cm.getCursor().line, cm.getCursor().ch-1, true);
cm.setOption('keyMap', 'vim');
}
CodeMirror.keyMap['vim-insert'] = {
// TODO: override navigation keys so that Esc will cancel automatic
// indentation from o, O, i_<CR>
'Esc': exitInsertMode,
'Ctrl-[': exitInsertMode,
'Ctrl-C': exitInsertMode,
'Ctrl-N': 'autocomplete',
'Ctrl-P': 'autocomplete',
'Enter': function(cm) {
var fn = CodeMirror.commands.newlineAndIndentContinueComment ||
CodeMirror.commands.newlineAndIndent;
fn(cm);
},
fallthrough: ['default']
};
return vimApi;
};
// Initialize Vim and make it available as an API.
var vim = Vim();
CodeMirror.Vim = vim;
}
)();
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