2015-11-24 22:00:46 +08:00

769 lines
22 KiB
JavaScript

/**
* Created by nuintun on 2015/11/24.
*/
'use strict';
var states = require('./states');
function fixLinefeed(data){
return data.replace(/([^\r])\n/g, '$1\r\n');
}
function fixIndent(data){
if (!/(^|\n) /.test(data)) return data;
// not very efficient, but works and would only become a problem
// once we render huge amounts of data
return data
.split('\n')
.map(function (line){
var count = 0;
while (line.charAt(0) === ' ') {
line = line.slice(1);
count++;
}
while (count--) {
line = ' ' + line;
}
return line;
})
.join('\r\n');
}
module.exports = function (Terminal){
Terminal.prototype.bell = function (){
var snd = new Audio("bell.wav"); // buffers automatically when created
snd.play();
if (!Terminal.visualBell) return;
var self = this;
this.element.style.borderColor = 'white';
setTimeout(function (){
self.element.style.borderColor = '';
}, 10);
if (Terminal.popOnBell) this.focus();
};
Terminal.prototype.write = function (data){
data = fixLinefeed(data);
data = fixIndent(data);
var l = data.length;
var i = 0;
var cs, ch;
this.refreshStart = this.y;
this.refreshEnd = this.y;
if (this.ybase !== this.ydisp) {
this.ydisp = this.ybase;
this.maxRange();
}
for (; i < l; i++) {
ch = data[i];
switch (this.state) {
case states.normal:
switch (ch) {
// '\a'
case '\x07':
this.bell();
break;
// '\n', '\v', '\f'
case '\n':
case '\x0b':
case '\x0c':
if (this.convertEol) {
this.x = 0;
}
this.y++;
break;
// '\r'
case '\r':
this.x = 0;
break;
// '\b'
case '\x08':
if (this.x > 0) {
this.x--;
}
break;
// '\t'
case '\t':
this.x = this.nextStop();
break;
// shift out
case '\x0e':
this.setgLevel(1);
break;
// shift in
case '\x0f':
this.setgLevel(0);
break;
// '\e'
case '\x1b':
this.state = states.escaped;
break;
default:
// ' '
if (ch >= ' ') {
if (this.charset && this.charset[ch]) {
ch = this.charset[ch];
}
if (this.x >= this.cols) {
this.x = 0;
this.y++;
}
// FIXME: this prevents errors from being thrown, but needs a proper fix
if (this.lines[this.y + this.ybase])
this.lines[this.y + this.ybase][this.x] = [this.curAttr, ch];
this.x++;
this.updateRange(this.y);
}
break;
}
break;
case states.escaped:
switch (ch) {
// ESC [ Control Sequence Introducer ( CSI is 0x9b).
case '[':
this.params = [];
this.currentParam = 0;
this.state = states.csi;
break;
// ESC ] Operating System Command ( OSC is 0x9d).
case ']':
this.params = [];
this.currentParam = 0;
this.state = states.osc;
break;
// ESC P Device Control String ( DCS is 0x90).
case 'P':
this.params = [];
this.currentParam = 0;
this.state = states.dcs;
break;
// ESC _ Application Program Command ( APC is 0x9f).
case '_':
this.stateType = 'apc';
this.state = states.ignore;
break;
// ESC ^ Privacy Message ( PM is 0x9e).
case '^':
this.stateType = 'pm';
this.state = states.ignore;
break;
// ESC c Full Reset (RIS).
case 'c':
this.reset();
break;
// ESC E Next Line ( NEL is 0x85).
// ESC D Index ( IND is 0x84).
case 'E':
this.x = 0;
break;
case 'D':
this.index();
break;
// ESC M Reverse Index ( RI is 0x8d).
case 'M':
this.reverseIndex();
break;
// ESC % Select default/utf-8 character set.
// @ = default, G = utf-8
case '%':
//this.charset = null;
this.setgLevel(0);
this.setgCharset(0, Terminal.charsets.US);
this.state = states.normal;
i++;
break;
// ESC (,),*,+,-,. Designate G0-G2 Character Set.
case '(':
// <-- this seems to get all the attention
case ')':
case '*':
case '+':
case '-':
case '.':
switch (ch) {
case '(':
this.gcharset = 0;
break;
case ')':
this.gcharset = 1;
break;
case '*':
this.gcharset = 2;
break;
case '+':
this.gcharset = 3;
break;
case '-':
this.gcharset = 1;
break;
case '.':
this.gcharset = 2;
break;
}
this.state = states.charset;
break;
// Designate G3 Character Set (VT300).
// A = ISO Latin-1 Supplemental.
// Not implemented.
case '/':
this.gcharset = 3;
this.state = states.charset;
i--;
break;
// ESC N
// Single Shift Select of G2 Character Set
// ( SS2 is 0x8e). This affects next character only.
case 'N':
break;
// ESC O
// Single Shift Select of G3 Character Set
// ( SS3 is 0x8f). This affects next character only.
case 'O':
break;
// ESC n
// Invoke the G2 Character Set as GL (LS2).
case 'n':
this.setgLevel(2);
break;
// ESC o
// Invoke the G3 Character Set as GL (LS3).
case 'o':
this.setgLevel(3);
break;
// ESC |
// Invoke the G3 Character Set as GR (LS3R).
case '|':
this.setgLevel(3);
break;
// ESC }
// Invoke the G2 Character Set as GR (LS2R).
case '}':
this.setgLevel(2);
break;
// ESC ~
// Invoke the G1 Character Set as GR (LS1R).
case '~':
this.setgLevel(1);
break;
// ESC 7 Save Cursor (DECSC).
case '7':
this.saveCursor();
this.state = states.normal;
break;
// ESC 8 Restore Cursor (DECRC).
case '8':
this.restoreCursor();
this.state = states.normal;
break;
// ESC # 3 DEC line height/width
case '#':
this.state = states.normal;
i++;
break;
// ESC H Tab Set (HTS is 0x88).
case 'H':
this.tabSet();
break;
// ESC = Application Keypad (DECPAM).
case '=':
this.log('Serial port requested application keypad.');
this.applicationKeypad = true;
this.state = states.normal;
break;
// ESC > Normal Keypad (DECPNM).
case '>':
this.log('Switching back to normal keypad.');
this.applicationKeypad = false;
this.state = states.normal;
break;
default:
this.state = states.normal;
this.error('Unknown ESC control: %s.', ch);
break;
}
break;
case states.charset:
switch (ch) {
case '0':
// DEC Special Character and Line Drawing Set.
cs = Terminal.charsets.SCLD;
break;
case 'A':
// UK
cs = Terminal.charsets.UK;
break;
case 'B':
// United States (USASCII).
cs = Terminal.charsets.US;
break;
case '4':
// Dutch
cs = Terminal.charsets.Dutch;
break;
case 'C':
// Finnish
case '5':
cs = Terminal.charsets.Finnish;
break;
case 'R':
// French
cs = Terminal.charsets.French;
break;
case 'Q':
// FrenchCanadian
cs = Terminal.charsets.FrenchCanadian;
break;
case 'K':
// German
cs = Terminal.charsets.German;
break;
case 'Y':
// Italian
cs = Terminal.charsets.Italian;
break;
case 'E':
// NorwegianDanish
case '6':
cs = Terminal.charsets.NorwegianDanish;
break;
case 'Z':
// Spanish
cs = Terminal.charsets.Spanish;
break;
case 'H':
// Swedish
case '7':
cs = Terminal.charsets.Swedish;
break;
case '=':
// Swiss
cs = Terminal.charsets.Swiss;
break;
case '/':
// ISOLatin (actually /A)
cs = Terminal.charsets.ISOLatin;
i++;
break;
default:
// Default
cs = Terminal.charsets.US;
break;
}
this.setgCharset(this.gcharset, cs);
this.gcharset = null;
this.state = states.normal;
break;
case states.osc:
// OSC Ps ; Pt ST
// OSC Ps ; Pt BEL
// Set Text Parameters.
if (ch === '\x1b' || ch === '\x07') {
if (ch === '\x1b') i++;
this.params.push(this.currentParam);
switch (this.params[0]) {
case 0:
case 1:
case 2:
if (this.params[1]) {
this.title = this.params[1];
//handlers could not be installed
if (this.handleTitle) {
this.handleTitle(this.title);
}
}
break;
case 3:
// set X property
break;
case 4:
case 5:
// change dynamic colors
break;
case 10:
case 11:
case 12:
case 13:
case 14:
case 15:
case 16:
case 17:
case 18:
case 19:
// change dynamic ui colors
break;
case 46:
// change log file
break;
case 50:
// dynamic font
break;
case 51:
// emacs shell
break;
case 52:
// manipulate selection data
break;
case 104:
case 105:
case 110:
case 111:
case 112:
case 113:
case 114:
case 115:
case 116:
case 117:
case 118:
// reset colors
break;
}
this.params = [];
this.currentParam = 0;
this.state = states.normal;
} else {
if (!this.params.length) {
if (ch >= '0' && ch <= '9') {
this.currentParam = this.currentParam * 10 + ch.charCodeAt(0) - 48;
} else if (ch === ';') {
this.params.push(this.currentParam);
this.currentParam = '';
}
} else {
this.currentParam += ch;
}
}
break;
case states.csi:
// '?', '>', '!'
if (ch === '?' || ch === '>' || ch === '!') {
this.prefix = ch;
break;
}
// 0 - 9
if (ch >= '0' && ch <= '9') {
this.currentParam = this.currentParam * 10 + ch.charCodeAt(0) - 48;
break;
}
// '$', '"', ' ', '\''
if (ch === '$' || ch === '"' || ch === ' ' || ch === '\'') {
this.postfix = ch;
break;
}
this.params.push(this.currentParam);
this.currentParam = 0;
// ';'
if (ch === ';') break;
this.state = states.normal;
switch (ch) {
// CSI Ps A
// Cursor Up Ps Times (default = 1) (CUU).
case 'A':
this.cursorUp(this.params);
break;
// CSI Ps B
// Cursor Down Ps Times (default = 1) (CUD).
case 'B':
this.cursorDown(this.params);
break;
// CSI Ps C
// Cursor Forward Ps Times (default = 1) (CUF).
case 'C':
this.cursorForward(this.params);
break;
// CSI Ps D
// Cursor Backward Ps Times (default = 1) (CUB).
case 'D':
this.cursorBackward(this.params);
break;
// CSI Ps ; Ps H
// Cursor Position [row;column] (default = [1,1]) (CUP).
case 'H':
this.cursorPos(this.params);
break;
// CSI Ps J Erase in Display (ED).
case 'J':
this.eraseInDisplay(this.params);
break;
// CSI Ps K Erase in Line (EL).
case 'K':
this.eraseInLine(this.params);
break;
// CSI Pm m Character Attributes (SGR).
case 'm':
this.charAttributes(this.params);
break;
// CSI Ps n Device Status Report (DSR).
case 'n':
this.deviceStatus(this.params);
break;
/**
* Additions
*/
// CSI Ps @
// Insert Ps (Blank) Character(s) (default = 1) (ICH).
case '@':
this.insertChars(this.params);
break;
// CSI Ps E
// Cursor Next Line Ps Times (default = 1) (CNL).
case 'E':
this.cursorNextLine(this.params);
break;
// CSI Ps F
// Cursor Preceding Line Ps Times (default = 1) (CNL).
case 'F':
this.cursorPrecedingLine(this.params);
break;
// CSI Ps G
// Cursor Character Absolute [column] (default = [row,1]) (CHA).
case 'G':
this.cursorCharAbsolute(this.params);
break;
// CSI Ps L
// Insert Ps Line(s) (default = 1) (IL).
case 'L':
this.insertLines(this.params);
break;
// CSI Ps M
// Delete Ps Line(s) (default = 1) (DL).
case 'M':
this.deleteLines(this.params);
break;
// CSI Ps P
// Delete Ps Character(s) (default = 1) (DCH).
case 'P':
this.deleteChars(this.params);
break;
// CSI Ps X
// Erase Ps Character(s) (default = 1) (ECH).
case 'X':
this.eraseChars(this.params);
break;
// CSI Pm ` Character Position Absolute
// [column] (default = [row,1]) (HPA).
case '`':
this.charPosAbsolute(this.params);
break;
// 141 61 a * HPR -
// Horizontal Position Relative
case 'a':
this.HPositionRelative(this.params);
break;
// CSI P s c
// Send Device Attributes (Primary DA).
// CSI > P s c
// Send Device Attributes (Secondary DA)
case 'c':
//- this.sendDeviceAttributes(this.params);
break;
// CSI Pm d
// Line Position Absolute [row] (default = [1,column]) (VPA).
case 'd':
this.linePosAbsolute(this.params);
break;
// 145 65 e * VPR - Vertical Position Relative
case 'e':
this.VPositionRelative(this.params);
break;
// CSI Ps ; Ps f
// Horizontal and Vertical Position [row;column] (default =
// [1,1]) (HVP).
case 'f':
this.HVPosition(this.params);
break;
// CSI Pm h Set Mode (SM).
// CSI ? Pm h - mouse escape codes, cursor escape codes
case 'h':
//- this.setMode(this.params);
break;
// CSI Pm l Reset Mode (RM).
// CSI ? Pm l
case 'l':
//- this.resetMode(this.params);
break;
// CSI Ps ; Ps r
// Set Scrolling Region [top;bottom] (default = full size of win-
// dow) (DECSTBM).
// CSI ? Pm r
case 'r':
//- this.setScrollRegion(this.params);
break;
// CSI s
// Save cursor (ANSI.SYS).
case 's':
this.saveCursor(this.params);
break;
// CSI u
// Restore cursor (ANSI.SYS).
case 'u':
this.restoreCursor(this.params);
break;
/**
* Lesser Used
*/
// CSI Ps I
// Cursor Forward Tabulation Ps tab stops (default = 1) (CHT).
case 'I':
this.cursorForwardTab(this.params);
break;
// CSI Ps S Scroll up Ps lines (default = 1) (SU).
case 'S':
//- this.scrollUp(this.params);
break;
// CSI Ps T Scroll down Ps lines (default = 1) (SD).
// CSI Ps ; Ps ; Ps ; Ps ; Ps T
// CSI > Ps; Ps T
case 'T':
if (this.params.length < 2 && !this.prefix) {
//- this.scrollDown(this.params);
}
break;
// CSI Ps Z
// Cursor Backward Tabulation Ps tab stops (default = 1) (CBT).
case 'Z':
this.cursorBackwardTab(this.params);
break;
// CSI Ps b Repeat the preceding graphic character Ps times (REP).
case 'b':
this.repeatPrecedingCharacter(this.params);
break;
// CSI Ps g Tab Clear (TBC).
case 'g':
this.tabClear(this.params);
break;
case 'p':
switch (this.prefix) {
case '!':
this.softReset(this.params);
break;
}
break;
default:
this.error('Unknown CSI code: %s.', ch);
break;
}
this.prefix = '';
this.postfix = '';
break;
case states.dcs:
if (ch === '\x1b' || ch === '\x07') {
if (ch === '\x1b') i++;
switch (this.prefix) {
// User-Defined Keys (DECUDK).
case '':
break;
// Request Status String (DECRQSS).
// test: echo -e '\eP$q"p\e\\'
case '$q':
var pt = this.currentParam,
valid = false;
switch (pt) {
// DECSCA
case '"q':
pt = '0"q';
break;
// DECSCL
case '"p':
pt = '61"p';
break;
// DECSTBM
case 'r':
pt = '' + (this.scrollTop + 1) + ';' + (this.scrollBottom + 1) + 'r';
break;
// SGR
case 'm':
pt = '0m';
break;
default:
this.error('Unknown DCS Pt: %s.', pt);
pt = '';
break;
}
break;
// Set Termcap/Terminfo Data (xterm, experimental).
case '+p':
break;
default:
this.error('Unknown DCS prefix: %s.', this.prefix);
break;
}
this.currentParam = 0;
this.prefix = '';
this.state = states.normal;
} else if (!this.currentParam) {
if (!this.prefix && ch !== '$' && ch !== '+') {
this.currentParam = ch;
} else if (this.prefix.length === 2) {
this.currentParam = ch;
} else {
this.prefix += ch;
}
} else {
this.currentParam += ch;
}
break;
case states.ignore:
// For PM and APC.
if (ch === '\x1b' || ch === '\x07') {
if (ch === '\x1b') i++;
this.stateData = '';
this.state = states.normal;
} else {
if (!this.stateData) this.stateData = '';
this.stateData += ch;
}
break;
}
}
this.updateRange(this.y);
this.refresh(this.refreshStart, this.refreshEnd);
};
Terminal.prototype.writeln = function (data){
// at times spaces appear in between escape chars and fixIndent fails us, so we fix it here
data = data.replace(/ /g, '&nbsp;');
// adding empty char before line break ensures that empty lines render properly
this.write(data + ' \r\n');
};
};