--- /dev/null
+/**
+ * Jexer - Java Text User Interface
+ *
+ * License: LGPLv3 or later
+ *
+ * This module is licensed under the GNU Lesser General Public License
+ * Version 3. Please see the file "COPYING" in this directory for more
+ * information about the GNU Lesser General Public License Version 3.
+ *
+ * Copyright (C) 2015 Kevin Lamonte
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see
+ * http://www.gnu.org/licenses/, or write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ * @author Kevin Lamonte [kevin.lamonte@gmail.com]
+ * @version 1
+ */
+package jexer.tterminal;
+
+/**
+ * This class contains a collection of the DEC VT100 and VT220 character set
+ * mappings into Unicode.
+ */
+public final class DECCharacterSets {
+
+ /**
+ * Private constructor prevents accidental creation of this class.
+ */
+ private DECCharacterSets() {
+ }
+
+ /**
+ * US - Normal "international" (ASCII).
+ */
+ public static final char [] US_ASCII = {
+ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
+ 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
+ 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
+ 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+ 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+ 0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+ 0x0058, 0x0059, 0x005A, 0x005B, 0x005C, 0x005D, 0x005E, 0x005F,
+ 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+ 0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F,
+ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
+ 0x0078, 0x0079, 0x007A, 0x007B, 0x007C, 0x007D, 0x007E, 0x0020
+ };
+
+ /**
+ * DEC Supplemental Graphics (VT100 drawing characters).
+ */
+ public static final char [] SPECIAL_GRAPHICS = {
+ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
+ 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
+ 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
+ 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+ 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+ 0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+ 0x0058, 0x0059, 0x005A, 0x005B, 0x005C, 0x005D, 0x005E, 0x005F,
+ 0x2666, 0x2592, 0x2409, 0x240C, 0x240D, 0x240A, 0x00B0, 0x00B1,
+ 0x2424, 0x240B, 0x2518, 0x2510, 0x250C, 0x2514, 0x253C, 0x23BA,
+ 0x23BB, 0x2500, 0x23BC, 0x23BD, 0x251C, 0x2524, 0x2534, 0x252C,
+ 0x2502, 0x2264, 0x2265, 0x03C0, 0x2260, 0x00A3, 0x00B7, 0x0020
+ };
+
+ /**
+ * Dec Supplemental (DEC multinational).
+ */
+ public static final char [] DEC_SUPPLEMENTAL = {
+ 0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x0085, 0x0086, 0x0087,
+ 0x0088, 0x0089, 0x008A, 0x008B, 0x008C, 0x008D, 0x008E, 0x008F,
+ 0x0090, 0x0091, 0x0092, 0x0093, 0x0094, 0x0095, 0x0096, 0x0097,
+ 0x0098, 0x0099, 0x009A, 0x009B, 0x009C, 0x009D, 0x009E, 0x009F,
+ 0x0020, 0x00A1, 0x00A2, 0x00A3, 0x00A8, 0x00A5, 0x0020, 0x00A7,
+ 0x00A4, 0x00A9, 0x00AA, 0x00AB, 0x0020, 0x0020, 0x0020, 0x0020,
+ 0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x0020, 0x00B5, 0x00B6, 0x00B7,
+ 0x0020, 0x00B9, 0x00BA, 0x00BB, 0x00BC, 0x00BD, 0x0020, 0x00BF,
+ 0x00C0, 0x00C1, 0x00C2, 0x00C3, 0x00C4, 0x00C5, 0x00C6, 0x00C7,
+ 0x00C8, 0x00C9, 0x00CA, 0x00CB, 0x00CC, 0x00CD, 0x00CE, 0x00CF,
+ 0x0020, 0x00D1, 0x00D2, 0x00D3, 0x00D4, 0x00D5, 0x00D6, 0x0157,
+ 0x00D8, 0x00D9, 0x00DA, 0x00DB, 0x00DC, 0x0178, 0x0020, 0x00DF,
+ 0x00E0, 0x00E1, 0x00E2, 0x00E3, 0x00E4, 0x00E5, 0x00E6, 0x00E7,
+ 0x00E8, 0x00E9, 0x00EA, 0x00EB, 0x00EC, 0x00ED, 0x00EE, 0x00EF,
+ 0x0020, 0x00F1, 0x00F2, 0x00F3, 0x00F4, 0x00F5, 0x00F6, 0x0153,
+ 0x00F8, 0x00F9, 0x00FA, 0x00FB, 0x00FC, 0x00FF, 0x0020, 0x0020
+ };
+
+ /**
+ * UK.
+ */
+ public static final char [] UK = {
+ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
+ 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
+ 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
+ 0x0020, 0x0021, 0x0022, 0x00A3, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+ 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+ 0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+ 0x0058, 0x0059, 0x005A, 0x005B, 0x005C, 0x005D, 0x005E, 0x005F,
+ 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+ 0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F,
+ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
+ 0x0078, 0x0079, 0x007A, 0x007B, 0x007C, 0x007D, 0x007E, 0x0020
+ };
+
+ /**
+ * DUTCH.
+ */
+ public static final char [] NL = {
+ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
+ 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
+ 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
+ 0x0020, 0x0021, 0x0022, 0x00A3, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+ 0x00BE, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+ 0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+ 0x0058, 0x0059, 0x005A, 0x0133, 0x00BD, 0x007C, 0x005E, 0x005F,
+ 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+ 0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F,
+ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
+ 0x0078, 0x0079, 0x007A, 0x00A8, 0x0066, 0x00BC, 0x00B4, 0x0020
+ };
+
+ /**
+ * FINNISH.
+ */
+ public static final char [] FI = {
+ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
+ 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
+ 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
+ 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+ 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+ 0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+ 0x0058, 0x0059, 0x005A, 0x00C4, 0x00D6, 0x00C5, 0x00DC, 0x005F,
+ 0x00E9, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+ 0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F,
+ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
+ 0x0078, 0x0079, 0x007A, 0x00E4, 0x00F6, 0x00E5, 0x00FC, 0x0020
+ };
+
+ /**
+ * FRENCH.
+ */
+ public static final char [] FR = {
+ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
+ 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
+ 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
+ 0x0020, 0x0021, 0x0022, 0x00A3, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+ 0x00E0, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+ 0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+ 0x0058, 0x0059, 0x005A, 0x00B0, 0x00E7, 0x00A7, 0x005E, 0x005F,
+ 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+ 0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F,
+ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
+ 0x0078, 0x0079, 0x007A, 0x00E9, 0x00F9, 0x00E8, 0x00A8, 0x0020
+ };
+
+ /**
+ * FRENCH_CA.
+ */
+ public static final char [] FR_CA = {
+ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
+ 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
+ 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
+ 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+ 0x00E0, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+ 0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+ 0x0058, 0x0059, 0x005A, 0x00E2, 0x00E7, 0x00EA, 0x00EE, 0x005F,
+ 0x00F4, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+ 0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F,
+ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
+ 0x0078, 0x0079, 0x007A, 0x00E9, 0x00F9, 0x00E8, 0x00FB, 0x0020
+ };
+
+ /**
+ * GERMAN.
+ */
+ public static final char [] DE = {
+ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
+ 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
+ 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
+ 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+ 0x00A7, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+ 0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+ 0x0058, 0x0059, 0x005A, 0x00C4, 0x00D6, 0x00DC, 0x005E, 0x005F,
+ 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+ 0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F,
+ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
+ 0x0078, 0x0079, 0x007A, 0x00E4, 0x00F6, 0x00FC, 0x00DF, 0x0020
+ };
+
+ /**
+ * ITALIAN.
+ */
+ public static final char [] IT = {
+ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
+ 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
+ 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
+ 0x0020, 0x0021, 0x0022, 0x00A3, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+ 0x00A7, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+ 0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+ 0x0058, 0x0059, 0x005A, 0x00B0, 0x00E7, 0x00E9, 0x005E, 0x005F,
+ 0x00F9, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+ 0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F,
+ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
+ 0x0078, 0x0079, 0x007A, 0x00E0, 0x00F2, 0x00E8, 0x00EC, 0x0020
+ };
+
+ /**
+ * NORWEGIAN.
+ */
+ public static final char [] NO = {
+ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
+ 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
+ 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
+ 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+ 0x00C4, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+ 0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+ 0x0058, 0x0059, 0x005A, 0x00C6, 0x00D8, 0x00C5, 0x00DC, 0x005F,
+ 0x00E4, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+ 0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F,
+ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
+ 0x0078, 0x0079, 0x007A, 0x00E6, 0x00F8, 0x00E5, 0x00FC, 0x0020
+ };
+
+ /**
+ * SPANISH.
+ */
+ public static final char [] ES = {
+ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
+ 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
+ 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
+ 0x0020, 0x0021, 0x0022, 0x00A3, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+ 0x00A7, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+ 0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+ 0x0058, 0x0059, 0x005A, 0x00A1, 0x00D1, 0x00BF, 0x005E, 0x005F,
+ 0x0060, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+ 0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F,
+ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
+ 0x0078, 0x0079, 0x007A, 0x00B0, 0x00F1, 0x00E7, 0x007E, 0x0020
+ };
+
+ /**
+ * SWEDISH.
+ */
+ public static final char [] SV = {
+ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
+ 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
+ 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
+ 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+ 0x00C9, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+ 0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+ 0x0058, 0x0059, 0x005A, 0x00C4, 0x00D6, 0x00C5, 0x00DC, 0x005F,
+ 0x00E9, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+ 0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F,
+ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
+ 0x0078, 0x0079, 0x007A, 0x00E4, 0x00F6, 0x00E5, 0x00FC, 0x0020
+ };
+
+ /**
+ * SWISS.
+ */
+ public static final char [] SWISS = {
+ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
+ 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
+ 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
+ 0x0020, 0x0021, 0x0022, 0x00F9, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+ 0x00E0, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+ 0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+ 0x0058, 0x0059, 0x005A, 0x00E9, 0x00E7, 0x00EA, 0x00EE, 0x00E8,
+ 0x00F4, 0x0061, 0x0062, 0x0063, 0x0064, 0x0065, 0x0066, 0x0067,
+ 0x0068, 0x0069, 0x006A, 0x006B, 0x006C, 0x006D, 0x006E, 0x006F,
+ 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
+ 0x0078, 0x0079, 0x007A, 0x00E4, 0x00F6, 0x00FC, 0x00FB, 0x0020
+ };
+
+ /**
+ * VT52 drawing characters.
+ */
+ public static final char [] VT52_SPECIAL_GRAPHICS = {
+ 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
+ 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x000F,
+ 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
+ 0x0018, 0x0019, 0x001A, 0x001B, 0x001C, 0x001D, 0x001E, 0x001F,
+ 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
+ 0x0028, 0x0029, 0x002A, 0x002B, 0x002C, 0x002D, 0x002E, 0x002F,
+ 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
+ 0x0038, 0x0039, 0x003A, 0x003B, 0x003C, 0x003D, 0x003E, 0x003F,
+ 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, 0x0046, 0x0047,
+ 0x0048, 0x0049, 0x004A, 0x004B, 0x004C, 0x004D, 0x004E, 0x004F,
+ 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057,
+ 0x0058, 0x0059, 0x005A, 0x005B, 0x005C, 0x005D, 0x0020, 0x0020,
+ 0x0020, 0x2588, 0x215F, 0x2592, 0x2592, 0x2592, 0x00B0, 0x00B1,
+ 0x2190, 0x2026, 0x00F7, 0x2193, 0x23BA, 0x23BA, 0x23BB, 0x23BB,
+ 0x2500, 0x2500, 0x23BC, 0x23BC, 0x2080, 0x2081, 0x2082, 0x2083,
+ 0x2084, 0x2085, 0x2086, 0x2087, 0x2088, 0x2089, 0x00B6, 0x0020
+ };
+
+}
--- /dev/null
+/**
+ * Jexer - Java Text User Interface
+ *
+ * License: LGPLv3 or later
+ *
+ * This module is licensed under the GNU Lesser General Public License
+ * Version 3. Please see the file "COPYING" in this directory for more
+ * information about the GNU Lesser General Public License Version 3.
+ *
+ * Copyright (C) 2015 Kevin Lamonte
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see
+ * http://www.gnu.org/licenses/, or write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ * @author Kevin Lamonte [kevin.lamonte@gmail.com]
+ * @version 1
+ */
+package jexer.tterminal;
+
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.Reader;
+import java.io.UnsupportedEncodingException;
+import java.io.Writer;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
+
+import jexer.bits.Color;
+import jexer.bits.Cell;
+import jexer.bits.CellAttributes;
+import jexer.TKeypress;
+import static jexer.TKeypress.*;
+
+/**
+ * This implements a complex ANSI ECMA-48/ISO 6429/ANSI X3.64 type consoles,
+ * including a scrollback buffer.
+ *
+ * <p>
+ * It currently implements VT100, VT102, VT220, and XTERM with the following
+ * caveats:
+ *
+ * <p>
+ * - Smooth scrolling, printing, keyboard locking, keyboard leds, and tests
+ * from VT100 are not supported.
+ *
+ * <p>
+ * - User-defined keys (DECUDK), downloadable fonts (DECDLD), and VT100/ANSI
+ * compatibility mode (DECSCL) from VT220 are not supported. (Also,
+ * because DECSCL is not supported, it will fail the last part of the
+ * vttest "Test of VT52 mode" if DeviceType is set to VT220.)
+ *
+ * <p>
+ * - Numeric/application keys from the number pad are not supported because
+ * they are not exposed from the TKeypress API.
+ *
+ * <p>
+ * - VT52 HOLD SCREEN mode is not supported.
+ *
+ * <p>
+ * - In VT52 graphics mode, the 3/, 5/, and 7/ characters (fraction
+ * numerators) are not rendered correctly.
+ *
+ * <p>
+ * - All data meant for the 'printer' (CSI Pc ? i) is discarded.
+ */
+public class ECMA48 implements Runnable {
+
+ /**
+ * The emulator can emulate several kinds of terminals.
+ */
+ public enum DeviceType {
+ /**
+ * DEC VT100 but also including the three VT102 functions.
+ */
+ VT100,
+
+ /**
+ * DEC VT102.
+ */
+ VT102,
+
+ /**
+ * DEC VT220.
+ */
+ VT220,
+
+ /**
+ * A subset of xterm.
+ */
+ XTERM
+ }
+
+ /**
+ * Return the proper primary Device Attributes string.
+ *
+ * @return string to send to remote side that is appropriate for the
+ * this.type
+ */
+ private String deviceTypeResponse() {
+ switch (type) {
+ case VT100:
+ // "I am a VT100 with advanced video option" (often VT102)
+ return "\033[?1;2c";
+
+ case VT102:
+ // "I am a VT102"
+ return "\033[?6c";
+
+ case VT220:
+ // "I am a VT220" - 7 bit version
+ if (!s8c1t) {
+ return "\033[?62;1;6c";
+ }
+ // "I am a VT220" - 8 bit version
+ return "\u009b?62;1;6c";
+ case XTERM:
+ // "I am a VT100 with advanced video option" (often VT102)
+ return "\033[?1;2c";
+ default:
+ throw new IllegalArgumentException("Invalid device type: " + type);
+ }
+ }
+
+ /**
+ * Return the proper TERM environment variable for this device type.
+ *
+ * @return "TERM=vt100", "TERM=xterm", etc.
+ */
+ public String deviceTypeTerm() {
+ switch (type) {
+ case VT100:
+ return "TERM=vt100";
+
+ case VT102:
+ return "TERM=vt102";
+
+ case VT220:
+ return "TERM=vt220";
+
+ case XTERM:
+ return "TERM=xterm";
+
+ default:
+ throw new IllegalArgumentException("Invalid device type: " + type);
+ }
+ }
+
+ /**
+ * Return the proper LANG for this device type. Only XTERM devices know
+ * about UTF-8, the others are defined by their standard to be either
+ * 7-bit or 8-bit characters only.
+ *
+ * @param baseLang a base language without UTF-8 flag such as "C" or
+ * "en_US"
+ * @return "LANG=en_US", "LANG=en_US.UTF-8", etc.
+ */
+ public String deviceTypeLang(final String baseLang) {
+ switch (type) {
+
+ case VT100:
+ return "LANG=" + baseLang;
+
+ case VT102:
+ return "LANG=" + baseLang;
+
+ case VT220:
+ return "LANG=" + baseLang;
+
+ case XTERM:
+ return "LANG=" + baseLang + ".UTF-8";
+
+ default:
+ throw new IllegalArgumentException("Invalid device type: " + type);
+ }
+ }
+
+ /**
+ * Write a string directly to the remote side.
+ *
+ * @param str string to send
+ */
+ private void writeRemote(final String str) {
+ if (stopReaderThread) {
+ // Reader hit EOF, bail out now.
+ close();
+ return;
+ }
+
+ // System.err.printf("writeRemote() '%s'\n", str);
+
+ switch (type) {
+ case VT100:
+ case VT102:
+ case VT220:
+ if (outputStream == null) {
+ return;
+ }
+ try {
+ for (int i = 0; i < str.length(); i++) {
+ outputStream.write(str.charAt(i));
+ }
+ outputStream.flush();
+ } catch (IOException e) {
+ // Assume EOF
+ close();
+ }
+ break;
+ case XTERM:
+ if (output == null) {
+ return;
+ }
+ try {
+ output.write(str);
+ output.flush();
+ } catch (IOException e) {
+ // Assume EOF
+ close();
+ }
+ break;
+ default:
+ throw new IllegalArgumentException("Invalid device type: " + type);
+ }
+ }
+
+ /**
+ * Close the input and output streams and stop the reader thread. Note
+ * that it is safe to call this multiple times.
+ */
+ public final void close() {
+
+ // Synchronize so we don't stomp on the reader thread.
+ synchronized (this) {
+
+ // Tell the reader thread to stop looking at input. It will
+ // close the input stream as it exits.
+ if (stopReaderThread == false) {
+ stopReaderThread = true;
+ try {
+ readerThread.join();
+ } catch (InterruptedException e) {
+ e.printStackTrace();
+ }
+ }
+
+ // Close the output stream.
+ switch (type) {
+ case VT100:
+ case VT102:
+ case VT220:
+ if (outputStream != null) {
+ try {
+ outputStream.close();
+ } catch (IOException e) {
+ // SQUASH
+ }
+ outputStream = null;
+ }
+ break;
+ case XTERM:
+ if (output != null) {
+ try {
+ output.close();
+ } catch (IOException e) {
+ // SQUASH
+ }
+ output = null;
+ }
+ break;
+ default:
+ throw new IllegalArgumentException("Invalid device type: "
+ + type);
+ }
+ } // synchronized (this)
+ }
+
+ /**
+ * When true, the reader thread is expected to exit.
+ */
+ private boolean stopReaderThread = false;
+
+ /**
+ * The reader thread.
+ */
+ private Thread readerThread = null;
+
+ /**
+ * See if the reader thread is still running.
+ *
+ * @return if true, we are still connected to / reading from the remote
+ * side
+ */
+ public final boolean isReading() {
+ return (!stopReaderThread);
+ }
+
+ /**
+ * The type of emulator to be.
+ */
+ private DeviceType type = DeviceType.VT102;
+
+ /**
+ * Obtain a new blank display line for an external user
+ * (e.g. TTerminalWindow).
+ *
+ * @return new blank line
+ */
+ public final DisplayLine getBlankDisplayLine() {
+ return new DisplayLine(currentState.attr);
+ }
+
+ /**
+ * The scrollback buffer characters + attributes.
+ */
+ private List<DisplayLine> scrollback;
+
+ /**
+ * Get the scrollback buffer.
+ *
+ * @return the scrollback buffer
+ */
+ public final List<DisplayLine> getScrollbackBuffer() {
+ return scrollback;
+ }
+
+ /**
+ * The raw display buffer characters + attributes.
+ */
+ private List<DisplayLine> display;
+
+ /**
+ * Get the display buffer.
+ *
+ * @return the display buffer
+ */
+ public final List<DisplayLine> getDisplayBuffer() {
+ return display;
+ }
+
+ /**
+ * The terminal's input. For type == XTERM, this is an InputStreamReader
+ * with UTF-8 encoding.
+ */
+ private Reader input;
+
+ /**
+ * The terminal's raw InputStream. This is used for type != XTERM.
+ */
+ private volatile InputStream inputStream;
+
+ /**
+ * The terminal's output. For type == XTERM, this wraps an
+ * OutputStreamWriter with UTF-8 encoding.
+ */
+ private Writer output;
+
+ /**
+ * The terminal's raw OutputStream. This is used for type != XTERM.
+ */
+ private OutputStream outputStream;
+
+ /**
+ * Parser character scan states.
+ */
+ enum ScanState {
+ GROUND,
+ ESCAPE,
+ ESCAPE_INTERMEDIATE,
+ CSI_ENTRY,
+ CSI_PARAM,
+ CSI_INTERMEDIATE,
+ CSI_IGNORE,
+ DCS_ENTRY,
+ DCS_INTERMEDIATE,
+ DCS_PARAM,
+ DCS_PASSTHROUGH,
+ DCS_IGNORE,
+ SOSPMAPC_STRING,
+ OSC_STRING,
+ VT52_DIRECT_CURSOR_ADDRESS
+ }
+
+ /**
+ * Current scanning state.
+ */
+ private ScanState scanState;
+
+ /**
+ * The selected number pad mode (DECKPAM, DECKPNM). We record this, but
+ * can't really use it in keypress() because we do not see number pad
+ * events from TKeypress.
+ */
+ private enum KeypadMode {
+ Application,
+ Numeric
+ }
+
+ /**
+ * Arrow keys can emit three different sequences (DECCKM or VT52
+ * submode).
+ */
+ private enum ArrowKeyMode {
+ VT52,
+ ANSI,
+ VT100
+ }
+
+ /**
+ * Available character sets for GL, GR, G0, G1, G2, G3.
+ */
+ private enum CharacterSet {
+ US,
+ UK,
+ DRAWING,
+ ROM,
+ ROM_SPECIAL,
+ VT52_GRAPHICS,
+ DEC_SUPPLEMENTAL,
+ NRC_DUTCH,
+ NRC_FINNISH,
+ NRC_FRENCH,
+ NRC_FRENCH_CA,
+ NRC_GERMAN,
+ NRC_ITALIAN,
+ NRC_NORWEGIAN,
+ NRC_SPANISH,
+ NRC_SWEDISH,
+ NRC_SWISS
+ }
+
+ /**
+ * Single-shift states used by the C1 control characters SS2 (0x8E) and
+ * SS3 (0x8F).
+ */
+ private enum Singleshift {
+ NONE,
+ SS2,
+ SS3
+ }
+
+ /**
+ * VT220+ lockshift states.
+ */
+ private enum LockshiftMode {
+ NONE,
+ G1_GR,
+ G2_GR,
+ G2_GL,
+ G3_GR,
+ G3_GL
+ }
+
+ /**
+ * Physical display width. We start at 80x24, but the user can resize us
+ * bigger/smaller.
+ */
+ private int width;
+
+ /**
+ * Get the display width.
+ *
+ * @return the width (usually 80 or 132)
+ */
+ public final int getWidth() {
+ return width;
+ }
+
+ /**
+ * Physical display height. We start at 80x24, but the user can resize
+ * us bigger/smaller.
+ */
+ private int height;
+
+ /**
+ * Get the display height.
+ *
+ * @return the height (usually 24)
+ */
+ public final int getHeight() {
+ return height;
+ }
+
+ /**
+ * Top margin of the scrolling region.
+ */
+ private int scrollRegionTop;
+
+ /**
+ * Bottom margin of the scrolling region.
+ */
+ private int scrollRegionBottom;
+
+ /**
+ * Right margin column number. This can be selected by the remote side
+ * to be 80/132 (rightMargin values 79/131), or it can be (width - 1).
+ */
+ private int rightMargin;
+
+ /**
+ * Last character printed.
+ */
+ private char repCh;
+
+ /**
+ * VT100-style line wrapping: a character is placed in column 80 (or
+ * 132), but the line does NOT wrap until another character is written to
+ * column 1 of the next line, after which the cursor moves to column 2.
+ */
+ private boolean wrapLineFlag;
+
+ /**
+ * VT220 single shift flag.
+ */
+ private Singleshift singleshift = Singleshift.NONE;
+
+ /**
+ * true = insert characters, false = overwrite.
+ */
+ private boolean insertMode = false;
+
+ /**
+ * VT52 mode as selected by DECANM. True means VT52, false means
+ * ANSI. Default is ANSI.
+ */
+ private boolean vt52Mode = false;
+
+ /**
+ * Visible cursor (DECTCEM).
+ */
+ private boolean cursorVisible = true;
+
+ /**
+ * Get visible cursor flag.
+ *
+ * @return if true, the cursor is visible
+ */
+ public final boolean visibleCursor() {
+ return cursorVisible;
+ }
+
+ /**
+ * Screen title as set by the xterm OSC sequence. Lots of applications
+ * send a screenTitle regardless of whether it is an xterm client or not.
+ */
+ private String screenTitle = "";
+
+ /**
+ * Get the screen title as set by the xterm OSC sequence. Lots of
+ * applications send a screenTitle regardless of whether it is an xterm
+ * client or not.
+ *
+ * @return screen title
+ */
+ public final String getScreenTitle() {
+ return screenTitle;
+ }
+
+ /**
+ * Array of flags that have come in, e.g. '?' (DEC private mode), '=',
+ * '>' (<), ...
+ */
+ private List<Character> csiFlags;
+
+ /**
+ * Parameter characters being collected.
+ */
+ private List<Integer> csiParams;
+
+ /**
+ * Non-csi collect buffer.
+ */
+ private List<Character> collectBuffer;
+
+ /**
+ * When true, use the G1 character set.
+ */
+ private boolean shiftOut = false;
+
+ /**
+ * Horizontal tab stop locations.
+ */
+ private List<Integer> tabStops;
+
+ /**
+ * S8C1T. True means 8bit controls, false means 7bit controls.
+ */
+ private boolean s8c1t = false;
+
+ /**
+ * Printer mode. True means send all output to printer, which discards
+ * it.
+ */
+ private boolean printerControllerMode = false;
+
+ /**
+ * LMN line mode. If true, linefeed() puts the cursor on the first
+ * column of the next line. If false, linefeed() puts the cursor one
+ * line down on the current line. The default is false.
+ */
+ private boolean newLineMode = false;
+
+ /**
+ * Whether arrow keys send ANSI, VT100, or VT52 sequences.
+ */
+ private ArrowKeyMode arrowKeyMode;
+
+ /**
+ * Whether number pad keys send VT100 or VT52, application or numeric
+ * sequences.
+ */
+ private KeypadMode keypadMode;
+
+ /**
+ * When true, the terminal is in 132-column mode (DECCOLM).
+ */
+ private boolean columns132 = false;
+
+ /**
+ * true = reverse video. Set by DECSCNM.
+ */
+ private boolean reverseVideo = false;
+
+ /**
+ * false = echo characters locally.
+ */
+ private boolean fullDuplex = true;
+
+ /**
+ * DECSC/DECRC save/restore a subset of the total state. This class
+ * encapsulates those specific flags/modes.
+ */
+ private class SaveableState {
+
+ /**
+ * When true, cursor positions are relative to the scrolling region.
+ */
+ public boolean originMode = false;
+
+ /**
+ * The current editing X position.
+ */
+ public int cursorX = 0;
+
+ /**
+ * The current editing Y position.
+ */
+ public int cursorY = 0;
+
+ /**
+ * Which character set is currently selected in G0.
+ */
+ public CharacterSet g0Charset = CharacterSet.US;
+
+ /**
+ * Which character set is currently selected in G1.
+ */
+ public CharacterSet g1Charset = CharacterSet.DRAWING;
+
+ /**
+ * Which character set is currently selected in G2.
+ */
+ public CharacterSet g2Charset = CharacterSet.US;
+
+ /**
+ * Which character set is currently selected in G3.
+ */
+ public CharacterSet g3Charset = CharacterSet.US;
+
+ /**
+ * Which character set is currently selected in GR.
+ */
+ public CharacterSet grCharset = CharacterSet.DRAWING;
+
+ /**
+ * The current drawing attributes.
+ */
+ public CellAttributes attr;
+
+ /**
+ * GL lockshift mode.
+ */
+ public LockshiftMode glLockshift = LockshiftMode.NONE;
+
+ /**
+ * GR lockshift mode.
+ */
+ public LockshiftMode grLockshift = LockshiftMode.NONE;
+
+ /**
+ * Line wrap.
+ */
+ public boolean lineWrap = true;
+
+ /**
+ * Reset to defaults.
+ */
+ public void reset() {
+ originMode = false;
+ cursorX = 0;
+ cursorY = 0;
+ g0Charset = CharacterSet.US;
+ g1Charset = CharacterSet.DRAWING;
+ g2Charset = CharacterSet.US;
+ g3Charset = CharacterSet.US;
+ grCharset = CharacterSet.DRAWING;
+ attr = new CellAttributes();
+ glLockshift = LockshiftMode.NONE;
+ grLockshift = LockshiftMode.NONE;
+ lineWrap = true;
+ }
+
+ /**
+ * Copy attributes from another instance.
+ *
+ * @param that the other instance to match
+ */
+ public void setTo(final SaveableState that) {
+ this.originMode = that.originMode;
+ this.cursorX = that.cursorX;
+ this.cursorY = that.cursorY;
+ this.g0Charset = that.g0Charset;
+ this.g1Charset = that.g1Charset;
+ this.g2Charset = that.g2Charset;
+ this.g3Charset = that.g3Charset;
+ this.grCharset = that.grCharset;
+ this.attr = new CellAttributes();
+ this.attr.setTo(that.attr);
+ this.glLockshift = that.glLockshift;
+ this.grLockshift = that.grLockshift;
+ this.lineWrap = that.lineWrap;
+ }
+
+ /**
+ * Public constructor.
+ */
+ public SaveableState() {
+ reset();
+ }
+ }
+
+ /**
+ * The current terminal state.
+ */
+ private SaveableState currentState;
+
+ /**
+ * The last saved terminal state.
+ */
+ private SaveableState savedState;
+
+ /**
+ * Clear the CSI parameters and flags.
+ */
+ private void toGround() {
+ csiParams.clear();
+ csiFlags.clear();
+ collectBuffer.clear();
+ scanState = ScanState.GROUND;
+ }
+
+ /**
+ * Reset the tab stops list.
+ */
+ private void resetTabStops() {
+ tabStops.clear();
+ for (int i = 0; (i * 8) <= rightMargin; i++) {
+ tabStops.add(new Integer(i * 8));
+ }
+ }
+
+ /**
+ * Reset the emulation state.
+ */
+ private void reset() {
+
+ currentState = new SaveableState();
+ savedState = new SaveableState();
+ scanState = ScanState.GROUND;
+ width = 80;
+ height = 24;
+ scrollRegionTop = 0;
+ scrollRegionBottom = height - 1;
+ rightMargin = width - 1;
+ newLineMode = false;
+ arrowKeyMode = ArrowKeyMode.ANSI;
+ keypadMode = KeypadMode.Numeric;
+ wrapLineFlag = false;
+
+ // Flags
+ shiftOut = false;
+ vt52Mode = false;
+ insertMode = false;
+ columns132 = false;
+ newLineMode = false;
+ reverseVideo = false;
+ fullDuplex = true;
+ cursorVisible = true;
+
+ // VT220
+ singleshift = Singleshift.NONE;
+ s8c1t = false;
+ printerControllerMode = false;
+
+ // Tab stops
+ resetTabStops();
+
+ // Clear CSI stuff
+ toGround();
+ }
+
+ /**
+ * Public constructor.
+ *
+ * @param type one of the DeviceType constants to select VT100, VT102,
+ * VT220, or XTERM
+ * @param inputStream an InputStream connected to the remote side. For
+ * type == XTERM, inputStrem is converted to a Reader with UTF-8
+ * encoding.
+ * @param outputStream an OutputStream connected to the remote user. For
+ * type == XTERM, outputStream is converted to a Writer with UTF-8
+ * encoding.
+ * @throws UnsupportedEncodingException if an exception is thrown when
+ * creating the InputStreamReader
+ */
+ public ECMA48(final DeviceType type, final InputStream inputStream,
+ final OutputStream outputStream) throws UnsupportedEncodingException {
+
+ assert (inputStream != null);
+ assert (outputStream != null);
+
+ csiFlags = new ArrayList<Character>();
+ csiParams = new ArrayList<Integer>();
+ collectBuffer = new ArrayList<Character>();
+ tabStops = new ArrayList<Integer>();
+ scrollback = new LinkedList<DisplayLine>();
+ display = new LinkedList<DisplayLine>();
+
+ this.type = type;
+ this.inputStream = inputStream;
+ if (type == DeviceType.XTERM) {
+ this.input = new InputStreamReader(inputStream, "UTF-8");
+ this.output = new OutputStreamWriter(outputStream, "UTF-8");
+ this.outputStream = null;
+ } else {
+ this.output = null;
+ this.outputStream = outputStream;
+ }
+
+ reset();
+ for (int i = 0; i < height; i++) {
+ display.add(new DisplayLine(currentState.attr));
+ }
+
+ // Spin up the input reader
+ readerThread = new Thread(this);
+ readerThread.start();
+ }
+
+ /**
+ * Append a new line to the bottom of the display, adding lines off the
+ * top to the scrollback buffer.
+ */
+ private void newDisplayLine() {
+ // Scroll the top line off into the scrollback buffer
+ scrollback.add(display.get(0));
+ display.remove(0);
+ DisplayLine line = new DisplayLine(currentState.attr);
+ line.setReverseColor(reverseVideo);
+ display.add(line);
+ }
+
+ /**
+ * Wraps the current line.
+ */
+ private void wrapCurrentLine() {
+ if (currentState.cursorY == height - 1) {
+ newDisplayLine();
+ }
+ if (currentState.cursorY < height - 1) {
+ currentState.cursorY++;
+ }
+ currentState.cursorX = 0;
+ }
+
+ /**
+ * Handle a carriage return.
+ */
+ private void carriageReturn() {
+ currentState.cursorX = 0;
+ wrapLineFlag = false;
+ }
+
+ /**
+ * Reverse the color of the visible display.
+ */
+ private void invertDisplayColors() {
+ for (DisplayLine line: display) {
+ line.setReverseColor(!line.isReverseColor());
+ }
+ }
+
+ /**
+ * Handle a linefeed.
+ */
+ private void linefeed() {
+ int i;
+
+ if (currentState.cursorY < scrollRegionBottom) {
+ // Increment screen y
+ currentState.cursorY++;
+ } else {
+
+ // Screen y does not increment
+
+ /*
+ * Two cases: either we're inside a scrolling region or not. If
+ * the scrolling region bottom is the bottom of the screen, then
+ * push the top line into the buffer. Else scroll the scrolling
+ * region up.
+ */
+ if ((scrollRegionBottom == height - 1) && (scrollRegionTop == 0)) {
+
+ // We're at the bottom of the scroll region, AND the scroll
+ // region is the entire screen.
+
+ // New line
+ newDisplayLine();
+
+ } else {
+ // We're at the bottom of the scroll region, AND the scroll
+ // region is NOT the entire screen.
+ scrollingRegionScrollUp(scrollRegionTop, scrollRegionBottom, 1);
+ }
+ }
+
+ if (newLineMode) {
+ currentState.cursorX = 0;
+ }
+ wrapLineFlag = false;
+ }
+
+ /**
+ * Prints one character to the display buffer.
+ *
+ * @param ch character to display
+ */
+ private void printCharacter(final char ch) {
+ int rightMargin = this.rightMargin;
+
+ // Check if we have double-width, and if so chop at 40/66 instead of
+ // 80/132
+ if (display.get(currentState.cursorY).isDoubleWidth()) {
+ rightMargin = ((rightMargin + 1) / 2) - 1;
+ }
+
+ // Check the unusually-complicated line wrapping conditions...
+ if (currentState.cursorX == rightMargin) {
+
+ if (currentState.lineWrap == true) {
+ /*
+ * This case happens when: the cursor was already on the
+ * right margin (either through printing or by an explicit
+ * placement command), and a character was printed.
+ *
+ * The line wraps only when a new character arrives AND the
+ * cursor is already on the right margin AND has placed a
+ * character in its cell. Easier to see than to explain.
+ */
+ if (wrapLineFlag == false) {
+ /*
+ * This block marks the case that we are in the margin
+ * and the first character has been received and printed.
+ */
+ wrapLineFlag = true;
+ } else {
+ /*
+ * This block marks the case that we are in the margin
+ * and the second character has been received and
+ * printed.
+ */
+ wrapLineFlag = false;
+ wrapCurrentLine();
+ }
+ }
+ } else if (currentState.cursorX <= rightMargin) {
+ /*
+ * This is the normal case: a character came in and was printed
+ * to the left of the right margin column.
+ */
+
+ // Turn off VT100 special-case flag
+ wrapLineFlag = false;
+ }
+
+ // "Print" the character
+ Cell newCell = new Cell(ch);
+ CellAttributes newCellAttributes = (CellAttributes) newCell;
+ newCellAttributes.setTo(currentState.attr);
+ DisplayLine line = display.get(currentState.cursorY);
+ // Insert mode special case
+ if (insertMode == true) {
+ line.insert(currentState.cursorX, newCell);
+ } else {
+ // Replace an existing character
+ line.replace(currentState.cursorX, newCell);
+ }
+
+ // Increment horizontal
+ if (wrapLineFlag == false) {
+ currentState.cursorX++;
+ if (currentState.cursorX > rightMargin) {
+ currentState.cursorX--;
+ }
+ }
+ }
+
+ /**
+ * Translate the keyboard press to a VT100, VT220, or XTERM sequence and
+ * send to the remote side.
+ *
+ * @param keypress keypress received from the local user
+ */
+ public void keypress(final TKeypress keypress) {
+ writeRemote(keypressToString(keypress));
+ }
+
+ /**
+ * Translate the keyboard press to a VT100, VT220, or XTERM sequence.
+ *
+ * @param keypress keypress received from the local user
+ * @return string to transmit to the remote side
+ */
+ private String keypressToString(final TKeypress keypress) {
+
+ if ((fullDuplex == false) && (!keypress.getIsKey())) {
+ /*
+ * If this is a control character, process it like it came from
+ * the remote side.
+ */
+ if (keypress.getCh() < 0x20) {
+ handleControlChar(keypress.getCh());
+ } else {
+ // Local echo for everything else
+ printCharacter(keypress.getCh());
+ }
+ }
+
+ if ((newLineMode == true) && (keypress.equals(kbEnter))) {
+ // NLM: send CRLF
+ return "\015\012";
+ }
+
+ // Handle control characters
+ if ((keypress.getCtrl()) && (!keypress.getIsKey())) {
+ StringBuilder sb = new StringBuilder();
+ char ch = keypress.getCh();
+ ch -= 0x40;
+ sb.append(ch);
+ return sb.toString();
+ }
+
+ // Handle alt characters
+ if ((keypress.getAlt()) && (!keypress.getIsKey())) {
+ StringBuilder sb = new StringBuilder("\033");
+ char ch = keypress.getCh();
+ sb.append(ch);
+ return sb.toString();
+ }
+
+ if (keypress.equals(kbBackspace)) {
+ switch (type) {
+ case VT100:
+ return "\010";
+ case VT102:
+ return "\010";
+ case VT220:
+ return "\177";
+ case XTERM:
+ return "\177";
+ }
+ }
+
+ if (keypress.equals(kbLeft)) {
+ switch (arrowKeyMode) {
+ case ANSI:
+ return "\033[D";
+ case VT52:
+ return "\033D";
+ case VT100:
+ return "\033OD";
+ }
+ }
+
+ if (keypress.equals(kbRight)) {
+ switch (arrowKeyMode) {
+ case ANSI:
+ return "\033[C";
+ case VT52:
+ return "\033C";
+ case VT100:
+ return "\033OC";
+ }
+ }
+
+ if (keypress.equals(kbUp)) {
+ switch (arrowKeyMode) {
+ case ANSI:
+ return "\033[A";
+ case VT52:
+ return "\033A";
+ case VT100:
+ return "\033OA";
+ }
+ }
+
+ if (keypress.equals(kbDown)) {
+ switch (arrowKeyMode) {
+ case ANSI:
+ return "\033[B";
+ case VT52:
+ return "\033B";
+ case VT100:
+ return "\033OB";
+ }
+ }
+
+ if (keypress.equals(kbHome)) {
+ switch (arrowKeyMode) {
+ case ANSI:
+ return "\033[H";
+ case VT52:
+ return "\033H";
+ case VT100:
+ return "\033OH";
+ }
+ }
+
+ if (keypress.equals(kbEnd)) {
+ switch (arrowKeyMode) {
+ case ANSI:
+ return "\033[F";
+ case VT52:
+ return "\033F";
+ case VT100:
+ return "\033OF";
+ }
+ }
+
+ if (keypress.equals(kbF1)) {
+ // PF1
+ if (vt52Mode) {
+ return "\033P";
+ }
+ return "\033OP";
+ }
+
+ if (keypress.equals(kbF2)) {
+ // PF2
+ if (vt52Mode) {
+ return "\033Q";
+ }
+ return "\033OQ";
+ }
+
+ if (keypress.equals(kbF3)) {
+ // PF3
+ if (vt52Mode) {
+ return "\033R";
+ }
+ return "\033OR";
+ }
+
+ if (keypress.equals(kbF4)) {
+ // PF4
+ if (vt52Mode) {
+ return "\033S";
+ }
+ return "\033OS";
+ }
+
+ if (keypress.equals(kbF5)) {
+ switch (type) {
+ case VT100:
+ return "\033Ot";
+ case VT102:
+ return "\033Ot";
+ case VT220:
+ return "\033[15~";
+ case XTERM:
+ return "\033[15~";
+ }
+ }
+
+ if (keypress.equals(kbF6)) {
+ switch (type) {
+ case VT100:
+ return "\033Ou";
+ case VT102:
+ return "\033Ou";
+ case VT220:
+ return "\033[17~";
+ case XTERM:
+ return "\033[17~";
+ }
+ }
+
+ if (keypress.equals(kbF7)) {
+ switch (type) {
+ case VT100:
+ return "\033Ov";
+ case VT102:
+ return "\033Ov";
+ case VT220:
+ return "\033[18~";
+ case XTERM:
+ return "\033[18~";
+ }
+ }
+
+ if (keypress.equals(kbF8)) {
+ switch (type) {
+ case VT100:
+ return "\033Ol";
+ case VT102:
+ return "\033Ol";
+ case VT220:
+ return "\033[19~";
+ case XTERM:
+ return "\033[19~";
+ }
+ }
+
+ if (keypress.equals(kbF9)) {
+ switch (type) {
+ case VT100:
+ return "\033Ow";
+ case VT102:
+ return "\033Ow";
+ case VT220:
+ return "\033[20~";
+ case XTERM:
+ return "\033[20~";
+ }
+ }
+
+ if (keypress.equals(kbF10)) {
+ switch (type) {
+ case VT100:
+ return "\033Ox";
+ case VT102:
+ return "\033Ox";
+ case VT220:
+ return "\033[21~";
+ case XTERM:
+ return "\033[21~";
+ }
+ }
+
+ if (keypress.equals(kbF11)) {
+ return "\033[23~";
+ }
+
+ if (keypress.equals(kbF12)) {
+ return "\033[24~";
+ }
+
+ if (keypress.equals(kbShiftF1)) {
+ // Shifted PF1
+ if (vt52Mode) {
+ return "\0332P";
+ }
+ return "\033O2P";
+ }
+
+ if (keypress.equals(kbShiftF2)) {
+ // Shifted PF2
+ if (vt52Mode) {
+ return "\0332Q";
+ }
+ return "\033O2Q";
+ }
+
+ if (keypress.equals(kbShiftF3)) {
+ // Shifted PF3
+ if (vt52Mode) {
+ return "\0332R";
+ }
+ return "\033O2R";
+ }
+
+ if (keypress.equals(kbShiftF4)) {
+ // Shifted PF4
+ if (vt52Mode) {
+ return "\0332S";
+ }
+ return "\033O2S";
+ }
+
+ if (keypress.equals(kbShiftF5)) {
+ // Shifted F5
+ return "\033[15;2~";
+ }
+
+ if (keypress.equals(kbShiftF6)) {
+ // Shifted F6
+ return "\033[17;2~";
+ }
+
+ if (keypress.equals(kbShiftF7)) {
+ // Shifted F7
+ return "\033[18;2~";
+ }
+
+ if (keypress.equals(kbShiftF8)) {
+ // Shifted F8
+ return "\033[19;2~";
+ }
+
+ if (keypress.equals(kbShiftF9)) {
+ // Shifted F9
+ return "\033[20;2~";
+ }
+
+ if (keypress.equals(kbShiftF10)) {
+ // Shifted F10
+ return "\033[21;2~";
+ }
+
+ if (keypress.equals(kbShiftF11)) {
+ // Shifted F11
+ return "\033[23;2~";
+ }
+
+ if (keypress.equals(kbShiftF12)) {
+ // Shifted F12
+ return "\033[24;2~";
+ }
+
+ if (keypress.equals(kbCtrlF1)) {
+ // Control PF1
+ if (vt52Mode) {
+ return "\0335P";
+ }
+ return "\033O5P";
+ }
+
+ if (keypress.equals(kbCtrlF2)) {
+ // Control PF2
+ if (vt52Mode) {
+ return "\0335Q";
+ }
+ return "\033O5Q";
+ }
+
+ if (keypress.equals(kbCtrlF3)) {
+ // Control PF3
+ if (vt52Mode) {
+ return "\0335R";
+ }
+ return "\033O5R";
+ }
+
+ if (keypress.equals(kbCtrlF4)) {
+ // Control PF4
+ if (vt52Mode) {
+ return "\0335S";
+ }
+ return "\033O5S";
+ }
+
+ if (keypress.equals(kbCtrlF5)) {
+ // Control F5
+ return "\033[15;5~";
+ }
+
+ if (keypress.equals(kbCtrlF6)) {
+ // Control F6
+ return "\033[17;5~";
+ }
+
+ if (keypress.equals(kbCtrlF7)) {
+ // Control F7
+ return "\033[18;5~";
+ }
+
+ if (keypress.equals(kbCtrlF8)) {
+ // Control F8
+ return "\033[19;5~";
+ }
+
+ if (keypress.equals(kbCtrlF9)) {
+ // Control F9
+ return "\033[20;5~";
+ }
+
+ if (keypress.equals(kbCtrlF10)) {
+ // Control F10
+ return "\033[21;5~";
+ }
+
+ if (keypress.equals(kbCtrlF11)) {
+ // Control F11
+ return "\033[23;5~";
+ }
+
+ if (keypress.equals(kbCtrlF12)) {
+ // Control F12
+ return "\033[24;5~";
+ }
+
+ if (keypress.equals(kbPgUp)) {
+ // Page Up
+ return "\033[5~";
+ }
+
+ if (keypress.equals(kbPgDn)) {
+ // Page Down
+ return "\033[6~";
+ }
+
+ if (keypress.equals(kbIns)) {
+ // Ins
+ return "\033[2~";
+ }
+
+ if (keypress.equals(kbShiftIns)) {
+ // This is what xterm sends for SHIFT-INS
+ return "\033[2;2~";
+ // This is what xterm sends for CTRL-INS
+ // return "\033[2;5~";
+ }
+
+ if (keypress.equals(kbShiftDel)) {
+ // This is what xterm sends for SHIFT-DEL
+ return "\033[3;2~";
+ // This is what xterm sends for CTRL-DEL
+ // return "\033[3;5~";
+ }
+
+ if (keypress.equals(kbDel)) {
+ // Delete sends real delete for VTxxx
+ return "\177";
+ // return "\033[3~";
+ }
+
+ if (keypress.equals(kbEnter)) {
+ return "\015";
+ }
+
+ if (keypress.equals(kbEsc)) {
+ return "\033";
+ }
+
+ if (keypress.equals(kbAltEsc)) {
+ return "\033\033";
+ }
+
+ if (keypress.equals(kbTab)) {
+ return "\011";
+ }
+
+ // Non-alt, non-ctrl characters
+ if (!keypress.getIsKey()) {
+ StringBuilder sb = new StringBuilder();
+ sb.append(keypress.getCh());
+ return sb.toString();
+ }
+ return "";
+ }
+
+ /**
+ * Map a symbol in any one of the VT100/VT220 character sets to a Unicode
+ * symbol.
+ *
+ * @param ch 8-bit character from the remote side
+ * @param charsetGl character set defined for GL
+ * @param charsetGr character set defined for GR
+ * @return character to display on the screen
+ */
+ private char mapCharacterCharset(final char ch,
+ final CharacterSet charsetGl,
+ final CharacterSet charsetGr) {
+
+ int lookupChar = ch;
+ CharacterSet lookupCharset = charsetGl;
+
+ if (ch >= 0x80) {
+ assert ((type == DeviceType.VT220) || (type == DeviceType.XTERM));
+ lookupCharset = charsetGr;
+ lookupChar &= 0x7F;
+ }
+
+ switch (lookupCharset) {
+
+ case DRAWING:
+ return DECCharacterSets.SPECIAL_GRAPHICS[lookupChar];
+
+ case UK:
+ return DECCharacterSets.UK[lookupChar];
+
+ case US:
+ return DECCharacterSets.US_ASCII[lookupChar];
+
+ case NRC_DUTCH:
+ return DECCharacterSets.NL[lookupChar];
+
+ case NRC_FINNISH:
+ return DECCharacterSets.FI[lookupChar];
+
+ case NRC_FRENCH:
+ return DECCharacterSets.FR[lookupChar];
+
+ case NRC_FRENCH_CA:
+ return DECCharacterSets.FR_CA[lookupChar];
+
+ case NRC_GERMAN:
+ return DECCharacterSets.DE[lookupChar];
+
+ case NRC_ITALIAN:
+ return DECCharacterSets.IT[lookupChar];
+
+ case NRC_NORWEGIAN:
+ return DECCharacterSets.NO[lookupChar];
+
+ case NRC_SPANISH:
+ return DECCharacterSets.ES[lookupChar];
+
+ case NRC_SWEDISH:
+ return DECCharacterSets.SV[lookupChar];
+
+ case NRC_SWISS:
+ return DECCharacterSets.SWISS[lookupChar];
+
+ case DEC_SUPPLEMENTAL:
+ return DECCharacterSets.DEC_SUPPLEMENTAL[lookupChar];
+
+ case VT52_GRAPHICS:
+ return DECCharacterSets.VT52_SPECIAL_GRAPHICS[lookupChar];
+
+ case ROM:
+ return DECCharacterSets.US_ASCII[lookupChar];
+
+ case ROM_SPECIAL:
+ return DECCharacterSets.US_ASCII[lookupChar];
+
+ default:
+ throw new IllegalArgumentException("Invalid character set value: "
+ + lookupCharset);
+ }
+ }
+
+ /**
+ * Map an 8-bit byte into a printable character.
+ *
+ * @param ch either 8-bit or Unicode character from the remote side
+ * @return character to display on the screen
+ */
+ private char mapCharacter(final char ch) {
+ if (ch >= 0x100) {
+ // Unicode character, just return it
+ return ch;
+ }
+
+ CharacterSet charsetGl = currentState.g0Charset;
+ CharacterSet charsetGr = currentState.grCharset;
+
+ if (vt52Mode == true) {
+ if (shiftOut == true) {
+ // Shifted out character, pull from VT52 graphics
+ charsetGl = currentState.g1Charset;
+ charsetGr = CharacterSet.US;
+ } else {
+ // Normal
+ charsetGl = currentState.g0Charset;
+ charsetGr = CharacterSet.US;
+ }
+
+ // Pull the character
+ return mapCharacterCharset(ch, charsetGl, charsetGr);
+ }
+
+ // shiftOout
+ if (shiftOut == true) {
+ // Shifted out character, pull from G1
+ charsetGl = currentState.g1Charset;
+ charsetGr = currentState.grCharset;
+
+ // Pull the character
+ return mapCharacterCharset(ch, charsetGl, charsetGr);
+ }
+
+ // SS2
+ if (singleshift == Singleshift.SS2) {
+
+ singleshift = Singleshift.NONE;
+
+ // Shifted out character, pull from G2
+ charsetGl = currentState.g2Charset;
+ charsetGr = currentState.grCharset;
+ }
+
+ // SS3
+ if (singleshift == Singleshift.SS3) {
+
+ singleshift = Singleshift.NONE;
+
+ // Shifted out character, pull from G3
+ charsetGl = currentState.g3Charset;
+ charsetGr = currentState.grCharset;
+ }
+
+ if ((type == DeviceType.VT220) || (type == DeviceType.XTERM)) {
+ // Check for locking shift
+
+ switch (currentState.glLockshift) {
+
+ case G1_GR:
+ assert (false);
+
+ case G2_GR:
+ assert (false);
+
+ case G3_GR:
+ assert (false);
+
+ case G2_GL:
+ // LS2
+ charsetGl = currentState.g2Charset;
+ break;
+
+ case G3_GL:
+ // LS3
+ charsetGl = currentState.g3Charset;
+ break;
+
+ case NONE:
+ // Normal
+ charsetGl = currentState.g0Charset;
+ break;
+ }
+
+ switch (currentState.grLockshift) {
+
+ case G2_GL:
+ assert (false);
+
+ case G3_GL:
+ assert (false);
+
+ case G1_GR:
+ // LS1R
+ charsetGr = currentState.g1Charset;
+ break;
+
+ case G2_GR:
+ // LS2R
+ charsetGr = currentState.g2Charset;
+ break;
+
+ case G3_GR:
+ // LS3R
+ charsetGr = currentState.g3Charset;
+ break;
+
+ case NONE:
+ // Normal
+ charsetGr = CharacterSet.DEC_SUPPLEMENTAL;
+ break;
+ }
+
+
+ }
+
+ // Pull the character
+ return mapCharacterCharset(ch, charsetGl, charsetGr);
+ }
+
+ /**
+ * Scroll the text within a scrolling region up n lines.
+ *
+ * @param regionTop top row of the scrolling region
+ * @param regionBottom bottom row of the scrolling region
+ * @param n number of lines to scroll
+ */
+ private void scrollingRegionScrollUp(final int regionTop,
+ final int regionBottom, final int n) {
+
+ if (regionTop >= regionBottom) {
+ return;
+ }
+
+ // Sanity check: see if there will be any characters left after the
+ // scroll
+ if (regionBottom + 1 - regionTop <= n) {
+ // There won't be anything left in the region, so just call
+ // eraseScreen() and return.
+ eraseScreen(regionTop, 0, regionBottom, width - 1, false);
+ return;
+ }
+
+ int remaining = regionBottom + 1 - regionTop - n;
+ List<DisplayLine> displayTop = display.subList(0, regionTop);
+ List<DisplayLine> displayBottom = display.subList(regionBottom + 1,
+ display.size());
+ List<DisplayLine> displayMiddle = display.subList(regionBottom + 1
+ - remaining, regionBottom + 1);
+ display = new LinkedList<DisplayLine>(displayTop);
+ display.addAll(displayMiddle);
+ for (int i = 0; i < n; i++) {
+ DisplayLine line = new DisplayLine(currentState.attr);
+ line.setReverseColor(reverseVideo);
+ display.add(line);
+ }
+ display.addAll(displayBottom);
+
+ assert (display.size() == height);
+ }
+
+ /**
+ * Scroll the text within a scrolling region down n lines.
+ *
+ * @param regionTop top row of the scrolling region
+ * @param regionBottom bottom row of the scrolling region
+ * @param n number of lines to scroll
+ */
+ private void scrollingRegionScrollDown(final int regionTop,
+ final int regionBottom, final int n) {
+
+ if (regionTop >= regionBottom) {
+ return;
+ }
+
+ // Sanity check: see if there will be any characters left after the
+ // scroll
+ if (regionBottom + 1 - regionTop <= n) {
+ // There won't be anything left in the region, so just call
+ // eraseScreen() and return.
+ eraseScreen(regionTop, 0, regionBottom, width - 1, false);
+ return;
+ }
+
+ int remaining = regionBottom + 1 - regionTop - n;
+ List<DisplayLine> displayTop = display.subList(0, regionTop);
+ List<DisplayLine> displayBottom = display.subList(regionBottom + 1,
+ display.size());
+ List<DisplayLine> displayMiddle = display.subList(regionTop,
+ regionTop + remaining);
+ display = new LinkedList<DisplayLine>(displayTop);
+ for (int i = 0; i < n; i++) {
+ DisplayLine line = new DisplayLine(currentState.attr);
+ line.setReverseColor(reverseVideo);
+ display.add(line);
+ }
+ display.addAll(displayMiddle);
+ display.addAll(displayBottom);
+
+ assert (display.size() == height);
+ }
+
+ /**
+ * Process a control character.
+ *
+ * @param ch 8-bit character from the remote side
+ */
+ private void handleControlChar(final char ch) {
+ assert ((ch <= 0x1F) || ((ch >= 0x7F) && (ch <= 0x9F)));
+
+ switch (ch) {
+
+ case 0x00:
+ // NUL - discard
+ return;
+
+ case 0x05:
+ // ENQ
+
+ // Transmit the answerback message.
+ // Not supported
+ break;
+
+ case 0x07:
+ // BEL
+ // Not supported
+ break;
+
+ case 0x08:
+ // BS
+ cursorLeft(1, false);
+ break;
+
+ case 0x09:
+ // HT
+ advanceToNextTabStop();
+ break;
+
+ case 0x0A:
+ // LF
+ linefeed();
+ break;
+
+ case 0x0B:
+ // VT
+ linefeed();
+ break;
+
+ case 0x0C:
+ // FF
+ linefeed();
+ break;
+
+ case 0x0D:
+ // CR
+ carriageReturn();
+ break;
+
+ case 0x0E:
+ // SO
+ shiftOut = true;
+ currentState.glLockshift = LockshiftMode.NONE;
+ break;
+
+ case 0x0F:
+ // SI
+ shiftOut = false;
+ currentState.glLockshift = LockshiftMode.NONE;
+ break;
+
+ case 0x84:
+ // IND
+ ind();
+ break;
+
+ case 0x85:
+ // NEL
+ nel();
+ break;
+
+ case 0x88:
+ // HTS
+ hts();
+ break;
+
+ case 0x8D:
+ // RI
+ ri();
+ break;
+
+ case 0x8E:
+ // SS2
+ singleshift = Singleshift.SS2;
+ break;
+
+ case 0x8F:
+ // SS3
+ singleshift = Singleshift.SS3;
+ break;
+
+ default:
+ break;
+ }
+
+ }
+
+ /**
+ * Advance the cursor to the next tab stop.
+ */
+ private void advanceToNextTabStop() {
+ if (tabStops.size() == 0) {
+ // Go to the rightmost column
+ cursorRight(rightMargin - currentState.cursorX, false);
+ return;
+ }
+ for (Integer stop: tabStops) {
+ if (stop > currentState.cursorX) {
+ cursorRight(stop - currentState.cursorX, false);
+ return;
+ }
+ }
+ /*
+ * We got here, meaning there isn't a tab stop beyond the current
+ * cursor position. Place the cursor of the right-most edge of the
+ * screen.
+ */
+ cursorRight(rightMargin - currentState.cursorX, false);
+ }
+
+ /**
+ * Save a character into the collect buffer.
+ *
+ * @param ch character to save
+ */
+ private void collect(final char ch) {
+ collectBuffer.add(new Character(ch));
+ }
+
+ /**
+ * Save a byte into the CSI parameters buffer.
+ *
+ * @param ch byte to save
+ */
+ private void param(final byte ch) {
+ if (csiParams.size() == 0) {
+ csiParams.add(new Integer(0));
+ }
+ Integer x = csiParams.get(csiParams.size() - 1);
+ if ((ch >= '0') && (ch <= '9')) {
+ x *= 10;
+ x += (ch - '0');
+ csiParams.set(csiParams.size() - 1, x);
+ }
+
+ if (ch == ';') {
+ csiParams.add(new Integer(0));
+ }
+ }
+
+ /**
+ * Get a CSI parameter value, with a default.
+ *
+ * @param position parameter index. 0 is the first parameter.
+ * @param defaultValue value to use if csiParams[position] doesn't exist
+ * @return parameter value
+ */
+ private int getCsiParam(final int position, final int defaultValue) {
+ if (csiParams.size() < position + 1) {
+ return defaultValue;
+ }
+ return csiParams.get(position).intValue();
+ }
+
+ /**
+ * Get a CSI parameter value, clamped to within min/max.
+ *
+ * @param position parameter index. 0 is the first parameter.
+ * @param defaultValue value to use if csiParams[position] doesn't exist
+ * @param minValue minimum value inclusive
+ * @param maxValue maximum value inclusive
+ * @return parameter value
+ */
+ private int getCsiParam(final int position, final int defaultValue,
+ final int minValue, final int maxValue) {
+
+ assert (minValue <= maxValue);
+ int value = getCsiParam(position, defaultValue);
+ if (value < minValue) {
+ value = minValue;
+ }
+ if (value > maxValue) {
+ value = maxValue;
+ }
+ return value;
+ }
+
+ /**
+ * Set or unset a toggle. value is 'true' for set ('h'), false for reset
+ * ('l').
+ */
+ private void setToggle(final boolean value) {
+ boolean decPrivateModeFlag = false;
+ for (Character ch: collectBuffer) {
+ if (ch == '?') {
+ decPrivateModeFlag = true;
+ }
+ }
+
+ for (Integer i: csiParams) {
+
+ switch (i) {
+
+ case 1:
+ if (decPrivateModeFlag == true) {
+ // DECCKM
+ if (value == true) {
+ // Use application arrow keys
+ arrowKeyMode = ArrowKeyMode.VT100;
+ } else {
+ // Use ANSI arrow keys
+ arrowKeyMode = ArrowKeyMode.ANSI;
+ }
+ }
+ break;
+ case 2:
+ if (decPrivateModeFlag == true) {
+ if (value == false) {
+
+ // DECANM
+ vt52Mode = true;
+ arrowKeyMode = ArrowKeyMode.VT52;
+
+ /*
+ * From the VT102 docs: "You use ANSI mode to select
+ * most terminal features; the terminal uses the same
+ * features when it switches to VT52 mode. You
+ * cannot, however, change most of these features in
+ * VT52 mode."
+ *
+ * In other words, do not reset any other attributes
+ * when switching between VT52 submode and ANSI.
+ *
+ * HOWEVER, the real vt100 does switch the character
+ * set according to Usenet.
+ */
+ currentState.g0Charset = CharacterSet.US;
+ currentState.g1Charset = CharacterSet.DRAWING;
+ shiftOut = false;
+
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ // VT52 mode is explicitly 7-bit
+ s8c1t = false;
+ singleshift = Singleshift.NONE;
+ }
+ }
+ } else {
+ // KAM
+ if (value == true) {
+ // Turn off keyboard
+ // Not supported
+ } else {
+ // Turn on keyboard
+ // Not supported
+ }
+ }
+ break;
+ case 3:
+ if (decPrivateModeFlag == true) {
+ // DECCOLM
+ if (value == true) {
+ // 132 columns
+ columns132 = true;
+ rightMargin = 131;
+ } else {
+ // 80 columns
+ columns132 = false;
+ rightMargin = 79;
+ }
+ width = rightMargin + 1;
+ // Entire screen is cleared, and scrolling region is
+ // reset
+ eraseScreen(0, 0, height - 1, width - 1, false);
+ scrollRegionTop = 0;
+ scrollRegionBottom = height - 1;
+ // Also home the cursor
+ cursorPosition(0, 0);
+ }
+ break;
+ case 4:
+ if (decPrivateModeFlag == true) {
+ // DECSCLM
+ if (value == true) {
+ // Smooth scroll
+ // Not supported
+ } else {
+ // Jump scroll
+ // Not supported
+ }
+ } else {
+ // IRM
+ if (value == true) {
+ insertMode = true;
+ } else {
+ insertMode = false;
+ }
+ }
+ break;
+ case 5:
+ if (decPrivateModeFlag == true) {
+ // DECSCNM
+ if (value == true) {
+ /*
+ * Set selects reverse screen, a white screen
+ * background with black characters.
+ */
+ if (reverseVideo != true) {
+ /*
+ * If in normal video, switch it back
+ */
+ invertDisplayColors();
+ }
+ reverseVideo = true;
+ } else {
+ /*
+ * Reset selects normal screen, a black screen
+ * background with white characters.
+ */
+ if (reverseVideo == true) {
+ /*
+ * If in reverse video already, switch it back
+ */
+ invertDisplayColors();
+ }
+ reverseVideo = false;
+ }
+ }
+ break;
+ case 6:
+ if (decPrivateModeFlag == true) {
+ // DECOM
+ if (value == true) {
+ // Origin is relative to scroll region cursor.
+ // Cursor can NEVER leave scrolling region.
+ currentState.originMode = true;
+ cursorPosition(0, 0);
+ } else {
+ // Origin is absolute to entire screen. Cursor can
+ // leave the scrolling region via cup() and hvp().
+ currentState.originMode = false;
+ cursorPosition(0, 0);
+ }
+ }
+ break;
+ case 7:
+ if (decPrivateModeFlag == true) {
+ // DECAWM
+ if (value == true) {
+ // Turn linewrap on
+ currentState.lineWrap = true;
+ } else {
+ // Turn linewrap off
+ currentState.lineWrap = false;
+ }
+ }
+ break;
+ case 8:
+ if (decPrivateModeFlag == true) {
+ // DECARM
+ if (value == true) {
+ // Keyboard auto-repeat on
+ // Not supported
+ } else {
+ // Keyboard auto-repeat off
+ // Not supported
+ }
+ }
+ break;
+ case 12:
+ if (decPrivateModeFlag == false) {
+ // SRM
+ if (value == true) {
+ // Local echo off
+ fullDuplex = true;
+ } else {
+ // Local echo on
+ fullDuplex = false;
+ }
+ }
+ break;
+ case 18:
+ if (decPrivateModeFlag == true) {
+ // DECPFF
+ // Not supported
+ }
+ break;
+ case 19:
+ if (decPrivateModeFlag == true) {
+ // DECPEX
+ // Not supported
+ }
+ break;
+ case 20:
+ if (decPrivateModeFlag == false) {
+ // LNM
+ if (value == true) {
+ /*
+ * Set causes a received linefeed, form feed, or
+ * vertical tab to move cursor to first column of
+ * next line. RETURN transmits both a carriage return
+ * and linefeed. This selection is also called new
+ * line option.
+ */
+ newLineMode = true;
+ } else {
+ /*
+ * Reset causes a received linefeed, form feed, or
+ * vertical tab to move cursor to next line in
+ * current column. RETURN transmits a carriage
+ * return.
+ */
+ newLineMode = false;
+ }
+ }
+ break;
+
+ case 25:
+ if ((type == DeviceType.VT220) || (type == DeviceType.XTERM)) {
+ if (decPrivateModeFlag == true) {
+ // DECTCEM
+ if (value == true) {
+ // Visible cursor
+ cursorVisible = true;
+ } else {
+ // Invisible cursor
+ cursorVisible = false;
+ }
+ }
+ }
+ break;
+
+ case 42:
+ if ((type == DeviceType.VT220) || (type == DeviceType.XTERM)) {
+ if (decPrivateModeFlag == true) {
+ // DECNRCM
+ if (value == true) {
+ // Select national mode NRC
+ // Not supported
+ } else {
+ // Select multi-national mode
+ // Not supported
+ }
+ }
+ }
+
+ break;
+
+ default:
+ break;
+
+ }
+ }
+ }
+
+ /**
+ * DECSC - Save cursor.
+ */
+ private void decsc() {
+ savedState.setTo(currentState);
+ }
+
+ /**
+ * DECRC - Restore cursor.
+ */
+ private void decrc() {
+ currentState.setTo(savedState);
+ }
+
+ /**
+ * IND - Index.
+ */
+ private void ind() {
+ // Move the cursor and scroll if necessary. If at the bottom line
+ // already, a scroll up is supposed to be performed.
+ if (currentState.cursorY == scrollRegionBottom) {
+ scrollingRegionScrollUp(scrollRegionTop, scrollRegionBottom, 1);
+ }
+ cursorDown(1, true);
+ }
+
+ /**
+ * RI - Reverse index.
+ */
+ private void ri() {
+ // Move the cursor and scroll if necessary. If at the top line
+ // already, a scroll down is supposed to be performed.
+ if (currentState.cursorY == scrollRegionTop) {
+ scrollingRegionScrollDown(scrollRegionTop, scrollRegionBottom, 1);
+ }
+ cursorUp(1, true);
+ }
+
+ /**
+ * NEL - Next line.
+ */
+ private void nel() {
+ // Move the cursor and scroll if necessary. If at the bottom line
+ // already, a scroll up is supposed to be performed.
+ if (currentState.cursorY == scrollRegionBottom) {
+ scrollingRegionScrollUp(scrollRegionTop, scrollRegionBottom, 1);
+ }
+ cursorDown(1, true);
+
+ // Reset to the beginning of the next line
+ currentState.cursorX = 0;
+ }
+
+ /**
+ * DECKPAM - Keypad application mode.
+ */
+ private void deckpam() {
+ keypadMode = KeypadMode.Application;
+ }
+
+ /**
+ * DECKPNM - Keypad numeric mode.
+ */
+ private void deckpnm() {
+ keypadMode = KeypadMode.Numeric;
+ }
+
+ /**
+ * Move up n spaces.
+ *
+ * @param n number of spaces to move
+ * @param honorScrollRegion if true, then do nothing if the cursor is
+ * outside the scrolling region
+ */
+ private void cursorUp(final int n, final boolean honorScrollRegion) {
+ int top;
+
+ /*
+ * Special case: if a user moves the cursor from the right margin, we
+ * have to reset the VT100 right margin flag.
+ */
+ if (n > 0) {
+ wrapLineFlag = false;
+ }
+
+ for (int i = 0; i < n; i++) {
+ if (honorScrollRegion == true) {
+ // Honor the scrolling region
+ if ((currentState.cursorY < scrollRegionTop)
+ || (currentState.cursorY > scrollRegionBottom)
+ ) {
+ // Outside region, do nothing
+ return;
+ }
+ // Inside region, go up
+ top = scrollRegionTop;
+ } else {
+ // Non-scrolling case
+ top = 0;
+ }
+
+ if (currentState.cursorY > top) {
+ currentState.cursorY--;
+ }
+ }
+ }
+
+ /**
+ * Move down n spaces.
+ *
+ * @param n number of spaces to move
+ * @param honorScrollRegion if true, then do nothing if the cursor is
+ * outside the scrolling region
+ */
+ private void cursorDown(final int n, final boolean honorScrollRegion) {
+ int bottom;
+
+ /*
+ * Special case: if a user moves the cursor from the right margin, we
+ * have to reset the VT100 right margin flag.
+ */
+ if (n > 0) {
+ wrapLineFlag = false;
+ }
+
+ for (int i = 0; i < n; i++) {
+
+ if (honorScrollRegion == true) {
+ // Honor the scrolling region
+ if (currentState.cursorY > scrollRegionBottom) {
+ // Outside region, do nothing
+ return;
+ }
+ // Inside region, go down
+ bottom = scrollRegionBottom;
+ } else {
+ // Non-scrolling case
+ bottom = height - 1;
+ }
+
+ if (currentState.cursorY < bottom) {
+ currentState.cursorY++;
+ }
+ }
+ }
+
+ /**
+ * Move left n spaces.
+ *
+ * @param n number of spaces to move
+ * @param honorScrollRegion if true, then do nothing if the cursor is
+ * outside the scrolling region
+ */
+ private void cursorLeft(final int n, final boolean honorScrollRegion) {
+ /*
+ * Special case: if a user moves the cursor from the right margin, we
+ * have to reset the VT100 right margin flag.
+ */
+ if (n > 0) {
+ wrapLineFlag = false;
+ }
+
+ for (int i = 0; i < n; i++) {
+ if (honorScrollRegion == true) {
+ // Honor the scrolling region
+ if ((currentState.cursorY < scrollRegionTop)
+ || (currentState.cursorY > scrollRegionBottom)
+ ) {
+ // Outside region, do nothing
+ return;
+ }
+ }
+
+ if (currentState.cursorX > 0) {
+ currentState.cursorX--;
+ }
+ }
+ }
+
+ /**
+ * Move right n spaces.
+ *
+ * @param n number of spaces to move
+ * @param honorScrollRegion if true, then do nothing if the cursor is
+ * outside the scrolling region
+ */
+ private void cursorRight(final int n, final boolean honorScrollRegion) {
+ int rightMargin = this.rightMargin;
+
+ /*
+ * Special case: if a user moves the cursor from the right margin, we
+ * have to reset the VT100 right margin flag.
+ */
+ if (n > 0) {
+ wrapLineFlag = false;
+ }
+
+ if (display.get(currentState.cursorY).isDoubleWidth()) {
+ rightMargin = ((rightMargin + 1) / 2) - 1;
+ }
+
+ for (int i = 0; i < n; i++) {
+ if (honorScrollRegion == true) {
+ // Honor the scrolling region
+ if ((currentState.cursorY < scrollRegionTop)
+ || (currentState.cursorY > scrollRegionBottom)
+ ) {
+ // Outside region, do nothing
+ return;
+ }
+ }
+
+ if (currentState.cursorX < rightMargin) {
+ currentState.cursorX++;
+ }
+ }
+ }
+
+ /**
+ * Move cursor to (col, row) where (0, 0) is the top-left corner.
+ *
+ * @param row row to move to
+ * @param col column to move to
+ */
+ private void cursorPosition(int row, final int col) {
+ int rightMargin = this.rightMargin;
+
+ assert (col >= 0);
+ assert (row >= 0);
+
+ if (display.get(currentState.cursorY).isDoubleWidth()) {
+ rightMargin = ((rightMargin + 1) / 2) - 1;
+ }
+
+ // Set column number
+ currentState.cursorX = col;
+
+ // Sanity check, bring column back to margin.
+ if (currentState.cursorX > rightMargin) {
+ currentState.cursorX = rightMargin;
+ }
+
+ // Set row number
+ if (currentState.originMode == true) {
+ row += scrollRegionTop;
+ }
+ if (currentState.cursorY < row) {
+ cursorDown(row - currentState.cursorY, false);
+ } else if (currentState.cursorY > row) {
+ cursorUp(currentState.cursorY - row, false);
+ }
+
+ wrapLineFlag = false;
+ }
+
+ /**
+ * HTS - Horizontal tabulation set.
+ */
+ private void hts() {
+ for (Integer stop: tabStops) {
+ if (stop == currentState.cursorX) {
+ // Already have a tab stop here
+ return;
+ }
+ }
+
+ // Append a tab stop to the end of the array and resort them
+ tabStops.add(currentState.cursorX);
+ Collections.sort(tabStops);
+ }
+
+ /**
+ * DECSWL - Single-width line.
+ */
+ private void decswl() {
+ display.get(currentState.cursorY).setDoubleWidth(false);
+ display.get(currentState.cursorY).setDoubleHeight(0);
+ }
+
+ /**
+ * DECDWL - Double-width line.
+ */
+ private void decdwl() {
+ display.get(currentState.cursorY).setDoubleWidth(true);
+ display.get(currentState.cursorY).setDoubleHeight(0);
+ }
+
+ /**
+ * DECHDL - Double-height + double-width line.
+ *
+ * @param topHalf if true, this sets the row to be the top half row of a
+ * double-height row
+ */
+ private void dechdl(final boolean topHalf) {
+ display.get(currentState.cursorY).setDoubleWidth(true);
+ if (topHalf == true) {
+ display.get(currentState.cursorY).setDoubleHeight(1);
+ } else {
+ display.get(currentState.cursorY).setDoubleHeight(2);
+ }
+ }
+
+ /**
+ * DECALN - Screen alignment display.
+ */
+ private void decaln() {
+ Cell newCell = new Cell();
+ newCell.setChar('E');
+ for (DisplayLine line: display) {
+ for (int i = 0; i < line.length(); i++) {
+ line.replace(i, newCell);
+ }
+ }
+ }
+
+ /**
+ * DECSCL - Compatibility level.
+ */
+ private void decscl() {
+ int i = getCsiParam(0, 0);
+ int j = getCsiParam(1, 0);
+
+ if (i == 61) {
+ // Reset fonts
+ currentState.g0Charset = CharacterSet.US;
+ currentState.g1Charset = CharacterSet.DRAWING;
+ s8c1t = false;
+ } else if (i == 62) {
+
+ if ((j == 0) || (j == 2)) {
+ s8c1t = true;
+ } else if (j == 1) {
+ s8c1t = false;
+ }
+ }
+ }
+
+ /**
+ * CUD - Cursor down.
+ */
+ private void cud() {
+ cursorDown(getCsiParam(0, 1, 1, height), true);
+ }
+
+ /**
+ * CUF - Cursor forward.
+ */
+ private void cuf() {
+ cursorRight(getCsiParam(0, 1, 1, rightMargin + 1), true);
+ }
+
+ /**
+ * CUB - Cursor backward.
+ */
+ private void cub() {
+ cursorLeft(getCsiParam(0, 1, 1, currentState.cursorX + 1), true);
+ }
+
+ /**
+ * CUU - Cursor up.
+ */
+ private void cuu() {
+ cursorUp(getCsiParam(0, 1, 1, currentState.cursorY + 1), true);
+ }
+
+ /**
+ * CUP - Cursor position.
+ */
+ private void cup() {
+ cursorPosition(getCsiParam(0, 1, 1, height) - 1,
+ getCsiParam(1, 1, 1, rightMargin + 1) - 1);
+ }
+
+ /**
+ * CNL - Cursor down and to column 1.
+ */
+ private void cnl() {
+ cursorDown(getCsiParam(0, 1, 1, height), true);
+ // To column 0
+ cursorLeft(currentState.cursorX, true);
+ }
+
+ /**
+ * CPL - Cursor up and to column 1.
+ */
+ private void cpl() {
+ cursorUp(getCsiParam(0, 1, 1, currentState.cursorY + 1), true);
+ // To column 0
+ cursorLeft(currentState.cursorX, true);
+ }
+
+ /**
+ * CHA - Cursor to column # in current row.
+ */
+ private void cha() {
+ cursorPosition(currentState.cursorY,
+ getCsiParam(0, 1, 1, rightMargin + 1) - 1);
+ }
+
+ /**
+ * VPA - Cursor to row #, same column.
+ */
+ private void vpa() {
+ cursorPosition(getCsiParam(0, 1, 1, height) - 1,
+ currentState.cursorX);
+ }
+
+ /**
+ * ED - Erase in display.
+ */
+ private void ed() {
+ boolean honorProtected = false;
+ boolean decPrivateModeFlag = false;
+
+ for (Character ch: collectBuffer) {
+ if (ch == '?') {
+ decPrivateModeFlag = true;
+ }
+ }
+
+ if (((type == DeviceType.VT220) || (type == DeviceType.XTERM))
+ && (decPrivateModeFlag == true)
+ ) {
+ honorProtected = true;
+ }
+
+ int i = getCsiParam(0, 0);
+
+ if (i == 0) {
+ // Erase from here to end of screen
+ if (currentState.cursorY < height - 1) {
+ eraseScreen(currentState.cursorY + 1, 0, height - 1, width - 1,
+ honorProtected);
+ }
+ eraseLine(currentState.cursorX, width - 1, honorProtected);
+ } else if (i == 1) {
+ // Erase from beginning of screen to here
+ eraseScreen(0, 0, currentState.cursorY - 1, width - 1,
+ honorProtected);
+ eraseLine(0, currentState.cursorX, honorProtected);
+ } else if (i == 2) {
+ // Erase entire screen
+ eraseScreen(0, 0, height - 1, width - 1, honorProtected);
+ }
+ }
+
+ /**
+ * EL - Erase in line.
+ */
+ private void el() {
+ boolean honorProtected = false;
+ boolean decPrivateModeFlag = false;
+
+ for (Character ch: collectBuffer) {
+ if (ch == '?') {
+ decPrivateModeFlag = true;
+ }
+ }
+
+ if (((type == DeviceType.VT220) || (type == DeviceType.XTERM))
+ && (decPrivateModeFlag == true)
+ ) {
+ honorProtected = true;
+ }
+
+ int i = getCsiParam(0, 0);
+
+ if (i == 0) {
+ // Erase from here to end of line
+ eraseLine(currentState.cursorX, width - 1, honorProtected);
+ } else if (i == 1) {
+ // Erase from beginning of line to here
+ eraseLine(0, currentState.cursorX, honorProtected);
+ } else if (i == 2) {
+ // Erase entire line
+ eraseLine(0, width - 1, honorProtected);
+ }
+ }
+
+ /**
+ * ECH - Erase # of characters in current row.
+ */
+ private void ech() {
+ int i = getCsiParam(0, 1, 1, width);
+
+ // Erase from here to i characters
+ eraseLine(currentState.cursorX, currentState.cursorX + i - 1, false);
+ }
+
+ /**
+ * IL - Insert line.
+ */
+ private void il() {
+ int i = getCsiParam(0, 1);
+
+ if ((currentState.cursorY >= scrollRegionTop)
+ && (currentState.cursorY <= scrollRegionBottom)
+ ) {
+
+ // I can get the same effect with a scroll-down
+ scrollingRegionScrollDown(currentState.cursorY,
+ scrollRegionBottom, i);
+ }
+ }
+
+ /**
+ * DCH - Delete char.
+ */
+ private void dch() {
+ int n = getCsiParam(0, 1);
+ DisplayLine line = display.get(currentState.cursorY);
+ Cell blank = new Cell();
+ for (int i = 0; i < n; i++) {
+ line.delete(currentState.cursorX, blank);
+ }
+ }
+
+ /**
+ * ICH - Insert blank char at cursor.
+ */
+ private void ich() {
+ int n = getCsiParam(0, 1);
+ DisplayLine line = display.get(currentState.cursorY);
+ Cell blank = new Cell();
+ for (int i = 0; i < n; i++) {
+ line.insert(currentState.cursorX, blank);
+ }
+ }
+
+ /**
+ * DL - Delete line.
+ */
+ private void dl() {
+ int i = getCsiParam(0, 1);
+
+ if ((currentState.cursorY >= scrollRegionTop)
+ && (currentState.cursorY <= scrollRegionBottom)) {
+
+ // I can get the same effect with a scroll-down
+ scrollingRegionScrollUp(currentState.cursorY,
+ scrollRegionBottom, i);
+ }
+ }
+
+ /**
+ * HVP - Horizontal and vertical position.
+ */
+ private void hvp() {
+ cup();
+ }
+
+ /**
+ * REP - Repeat character.
+ */
+ private void rep() {
+ int n = getCsiParam(0, 1);
+ for (int i = 0; i < n; i++) {
+ printCharacter(repCh);
+ }
+ }
+
+ /**
+ * SU - Scroll up.
+ */
+ private void su() {
+ scrollingRegionScrollUp(scrollRegionTop, scrollRegionBottom,
+ getCsiParam(0, 1, 1, height));
+ }
+
+ /**
+ * SD - Scroll down.
+ */
+ private void sd() {
+ scrollingRegionScrollDown(scrollRegionTop, scrollRegionBottom,
+ getCsiParam(0, 1, 1, height));
+ }
+
+ /**
+ * CBT - Go back X tab stops.
+ */
+ private void cbt() {
+ int tabsToMove = getCsiParam(0, 1);
+ int tabI;
+
+ for (int i = 0; i < tabsToMove; i++) {
+ int j = currentState.cursorX;
+ for (tabI = 0; tabI < tabStops.size(); tabI++) {
+ if (tabStops.get(tabI) >= currentState.cursorX) {
+ break;
+ }
+ }
+ tabI--;
+ if (tabI <= 0) {
+ j = 0;
+ } else {
+ j = tabStops.get(tabI);
+ }
+ cursorPosition(currentState.cursorY, j);
+ }
+ }
+
+ /**
+ * CHT - Advance X tab stops.
+ */
+ private void cht() {
+ int n = getCsiParam(0, 1);
+ for (int i = 0; i < n; i++) {
+ advanceToNextTabStop();
+ }
+ }
+
+ /**
+ * SGR - Select graphics rendition.
+ */
+ private void sgr() {
+
+ if (csiParams.size() == 0) {
+ currentState.attr.reset();
+ return;
+ }
+
+ for (Integer i: csiParams) {
+
+ switch (i) {
+
+ case 0:
+ // Normal
+ currentState.attr.reset();
+ break;
+
+ case 1:
+ // Bold
+ currentState.attr.setBold(true);
+ break;
+
+ case 4:
+ // Underline
+ currentState.attr.setUnderline(true);
+ break;
+
+ case 5:
+ // Blink
+ currentState.attr.setBlink(true);
+ break;
+
+ case 7:
+ // Reverse
+ currentState.attr.setReverse(true);
+ break;
+
+ default:
+ break;
+ }
+
+ if (type == DeviceType.XTERM) {
+
+ switch (i) {
+
+ case 8:
+ // Invisible
+ // TODO
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ switch (i) {
+
+ case 22:
+ // Normal intensity
+ currentState.attr.setBold(false);
+ break;
+
+ case 24:
+ // No underline
+ currentState.attr.setUnderline(false);
+ break;
+
+ case 25:
+ // No blink
+ currentState.attr.setBlink(false);
+ break;
+
+ case 27:
+ // Un-reverse
+ currentState.attr.setReverse(false);
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ // A true VT100/102/220 does not support color, however everyone
+ // is used to their terminal emulator supporting color so we will
+ // unconditionally support color for all DeviceType's.
+
+ switch (i) {
+
+ case 30:
+ // Set black foreground
+ currentState.attr.setForeColor(Color.BLACK);
+ break;
+ case 31:
+ // Set red foreground
+ currentState.attr.setForeColor(Color.RED);
+ break;
+ case 32:
+ // Set green foreground
+ currentState.attr.setForeColor(Color.GREEN);
+ break;
+ case 33:
+ // Set yellow foreground
+ currentState.attr.setForeColor(Color.YELLOW);
+ break;
+ case 34:
+ // Set blue foreground
+ currentState.attr.setForeColor(Color.BLUE);
+ break;
+ case 35:
+ // Set magenta foreground
+ currentState.attr.setForeColor(Color.MAGENTA);
+ break;
+ case 36:
+ // Set cyan foreground
+ currentState.attr.setForeColor(Color.CYAN);
+ break;
+ case 37:
+ // Set white foreground
+ currentState.attr.setForeColor(Color.WHITE);
+ break;
+ case 38:
+ // Underscore on, default foreground color
+ currentState.attr.setUnderline(true);
+ currentState.attr.setForeColor(Color.WHITE);
+ break;
+ case 39:
+ // Underscore off, default foreground color
+ currentState.attr.setUnderline(false);
+ currentState.attr.setForeColor(Color.WHITE);
+ break;
+ case 40:
+ // Set black background
+ currentState.attr.setBackColor(Color.BLACK);
+ break;
+ case 41:
+ // Set red background
+ currentState.attr.setBackColor(Color.RED);
+ break;
+ case 42:
+ // Set green background
+ currentState.attr.setBackColor(Color.GREEN);
+ break;
+ case 43:
+ // Set yellow background
+ currentState.attr.setBackColor(Color.YELLOW);
+ break;
+ case 44:
+ // Set blue background
+ currentState.attr.setBackColor(Color.BLUE);
+ break;
+ case 45:
+ // Set magenta background
+ currentState.attr.setBackColor(Color.MAGENTA);
+ break;
+ case 46:
+ // Set cyan background
+ currentState.attr.setBackColor(Color.CYAN);
+ break;
+ case 47:
+ // Set white background
+ currentState.attr.setBackColor(Color.WHITE);
+ break;
+ case 49:
+ // Default background
+ currentState.attr.setBackColor(Color.BLACK);
+ break;
+
+ default:
+ break;
+ }
+ }
+ }
+
+ /**
+ * DA - Device attributes.
+ */
+ private void da() {
+ int extendedFlag = 0;
+ int i = 0;
+ Character [] chars = collectBuffer.toArray(new Character[0]);
+ StringBuilder args = new StringBuilder();
+ for (int j = 1; j < chars.length; j++) {
+ args.append(chars[j]);
+ }
+
+ if (chars.length > 0) {
+ if (chars[0] == '>') {
+ extendedFlag = 1;
+ if (chars.length >= 2) {
+ i = Integer.parseInt(args.toString());
+ }
+ } else if (chars[0] == '=') {
+ extendedFlag = 2;
+ if (chars.length >= 2) {
+ i = Integer.parseInt(args.toString());
+ }
+ } else {
+ // Unknown code, bail out
+ return;
+ }
+ }
+
+ if ((i != 0) && (i != 1)) {
+ return;
+ }
+
+ if ((extendedFlag == 0) && (i == 0)) {
+ // Send string directly to remote side
+ writeRemote(deviceTypeResponse());
+ return;
+ }
+
+ if ((type == DeviceType.VT220) || (type == DeviceType.XTERM)) {
+
+ if ((extendedFlag == 1) && (i == 0)) {
+ /*
+ * Request "What type of terminal are you, what is your
+ * firmware version, and what hardware options do you have
+ * installed?"
+ *
+ * Respond: "I am a VT220 (identification code of 1), my
+ * firmware version is _____ (Pv), and I have _____ Po
+ * options installed."
+ *
+ * (Same as xterm)
+ *
+ */
+
+ if (s8c1t == true) {
+ writeRemote("\u009b>1;10;0c");
+ } else {
+ writeRemote("\033[>1;10;0c");
+ }
+ }
+ }
+
+ // VT420 and up
+ if ((extendedFlag == 2) && (i == 0)) {
+
+ /*
+ * Request "What is your unit ID?"
+ *
+ * Respond: "I was manufactured at site 00 and have a unique ID
+ * number of 123."
+ *
+ */
+ writeRemote("\033P!|00010203\033\\");
+ }
+ }
+
+ /**
+ * DECSTBM - Set top and bottom margins.
+ */
+ private void decstbm() {
+ int top = getCsiParam(0, 1, 1, height) - 1;
+ int bottom = getCsiParam(1, height, 1, height) - 1;
+
+ if (top > bottom) {
+ top = bottom;
+ }
+ scrollRegionTop = top;
+ scrollRegionBottom = bottom;
+
+ // Home cursor
+ cursorPosition(0, 0);
+ }
+
+ /**
+ * DECREQTPARM - Request terminal parameters.
+ */
+ private void decreqtparm() {
+ int i = getCsiParam(0, 0);
+
+ if ((i != 0) && (i != 1)) {
+ return;
+ }
+
+ String str = "";
+
+ /*
+ * Request terminal parameters.
+ *
+ * Respond with:
+ *
+ * Parity NONE, 8 bits, xmitspeed 38400, recvspeed 38400.
+ * (CLoCk MULtiplier = 1, STP option flags = 0)
+ *
+ * (Same as xterm)
+ */
+ if (((type == DeviceType.VT220) || (type == DeviceType.XTERM))
+ && (s8c1t == true)
+ ) {
+ str = String.format("\u009b%d;1;1;128;128;1;0x", i + 2);
+ } else {
+ str = String.format("\033[%d;1;1;128;128;1;0x", i + 2);
+ }
+ writeRemote(str);
+ }
+
+ /**
+ * DECSCA - Select Character Attributes.
+ */
+ private void decsca() {
+ int i = getCsiParam(0, 0);
+
+ if ((i == 0) || (i == 2)) {
+ // Protect mode OFF
+ currentState.attr.setProtect(false);
+ }
+ if (i == 1) {
+ // Protect mode ON
+ currentState.attr.setProtect(true);
+ }
+ }
+
+ /**
+ * DECSTR - Soft Terminal Reset.
+ */
+ private void decstr() {
+ // Do exactly like RIS - Reset to initial state
+ reset();
+ // Do I clear screen too? I think so...
+ eraseScreen(0, 0, height - 1, width - 1, false);
+ cursorPosition(0, 0);
+ }
+
+ /**
+ * DSR - Device status report.
+ */
+ private void dsr() {
+ boolean decPrivateModeFlag = false;
+
+ for (Character ch: collectBuffer) {
+ if (ch == '?') {
+ decPrivateModeFlag = true;
+ }
+ }
+
+ int i = getCsiParam(0, 0);
+
+ switch (i) {
+
+ case 5:
+ // Request status report. Respond with "OK, no malfunction."
+
+ // Send string directly to remote side
+ if (((type == DeviceType.VT220) || (type == DeviceType.XTERM))
+ && (s8c1t == true)
+ ) {
+ writeRemote("\u009b0n");
+ } else {
+ writeRemote("\033[0n");
+ }
+ break;
+
+ case 6:
+ // Request cursor position. Respond with current position.
+ String str = "";
+ if (((type == DeviceType.VT220) || (type == DeviceType.XTERM))
+ && (s8c1t == true)
+ ) {
+ str = String.format("\u009b%d;%dR",
+ currentState.cursorY + 1, currentState.cursorX + 1);
+ } else {
+ str = String.format("\033[%d;%dR",
+ currentState.cursorY + 1, currentState.cursorX + 1);
+ }
+
+ // Send string directly to remote side
+ writeRemote(str);
+ break;
+
+ case 15:
+ if (decPrivateModeFlag == true) {
+
+ // Request printer status report. Respond with "Printer not
+ // connected."
+
+ if (((type == DeviceType.VT220) || (type == DeviceType.XTERM))
+ && (s8c1t == true)) {
+ writeRemote("\u009b?13n");
+ } else {
+ writeRemote("\033[?13n");
+ }
+ }
+ break;
+
+ case 25:
+ if (((type == DeviceType.VT220) || (type == DeviceType.XTERM))
+ && (decPrivateModeFlag == true)
+ ) {
+
+ // Request user-defined keys are locked or unlocked. Respond
+ // with "User-defined keys are locked."
+
+ if (s8c1t == true) {
+ writeRemote("\u009b?21n");
+ } else {
+ writeRemote("\033[?21n");
+ }
+ }
+ break;
+
+ case 26:
+ if (((type == DeviceType.VT220) || (type == DeviceType.XTERM))
+ && (decPrivateModeFlag == true)
+ ) {
+
+ // Request keyboard language. Respond with "Keyboard
+ // language is North American."
+
+ if (s8c1t == true) {
+ writeRemote("\u009b?27;1n");
+ } else {
+ writeRemote("\033[?27;1n");
+ }
+
+ }
+ break;
+
+ default:
+ // Some other option, ignore
+ break;
+ }
+ }
+
+ /**
+ * TBC - Tabulation clear.
+ */
+ private void tbc() {
+ int i = getCsiParam(0, 0);
+ if (i == 0) {
+ List<Integer> newStops = new ArrayList<Integer>();
+ for (Integer stop: tabStops) {
+ if (stop == currentState.cursorX) {
+ continue;
+ }
+ newStops.add(stop);
+ }
+ tabStops = newStops;
+ }
+ if (i == 3) {
+ tabStops.clear();
+ }
+ }
+
+ /**
+ * Erase the characters in the current line from the start column to the
+ * end column, inclusive.
+ *
+ * @param start starting column to erase (between 0 and width - 1)
+ * @param end ending column to erase (between 0 and width - 1)
+ * @param honorProtected if true, do not erase characters with the
+ * protected attribute set
+ */
+ private void eraseLine(int start, int end, final boolean honorProtected) {
+
+ if (start > end) {
+ return;
+ }
+ if (end > width - 1) {
+ end = width - 1;
+ }
+ if (start < 0) {
+ start = 0;
+ }
+
+ for (int i = start; i <= end; i++) {
+ DisplayLine line = display.get(currentState.cursorY);
+ if ((!honorProtected)
+ || ((honorProtected) && (!line.charAt(i).getProtect()))) {
+
+ switch (type) {
+ case VT100:
+ case VT102:
+ case VT220:
+ /*
+ * From the VT102 manual:
+ *
+ * Erasing a character also erases any character
+ * attribute of the character.
+ */
+ line.setBlank(i);
+ break;
+ case XTERM:
+ /*
+ * Erase with the current color a.k.a. back-color erase
+ * (bce).
+ */
+ line.setChar(i, ' ');
+ line.setAttr(i, currentState.attr);
+ break;
+ }
+ }
+ }
+ }
+
+ /**
+ * Erase a rectangular section of the screen, inclusive. end column,
+ * inclusive.
+ *
+ * @param startRow starting row to erase (between 0 and height - 1)
+ * @param startCol starting column to erase (between 0 and width - 1)
+ * @param endRow ending row to erase (between 0 and height - 1)
+ * @param endCol ending column to erase (between 0 and width - 1)
+ * @param honorProtected if true, do not erase characters with the
+ * protected attribute set
+ */
+ private void eraseScreen(final int startRow, final int startCol,
+ final int endRow, final int endCol, final boolean honorProtected) {
+
+ int oldCursorY;
+
+ if ((startRow < 0)
+ || (startCol < 0)
+ || (endRow < 0)
+ || (endCol < 0)
+ || (endRow < startRow)
+ || (endCol < startCol)
+ ) {
+ return;
+ }
+
+ oldCursorY = currentState.cursorY;
+ for (int i = startRow; i <= endRow; i++) {
+ currentState.cursorY = i;
+ eraseLine(startCol, endCol, honorProtected);
+
+ // Erase display clears the double attributes
+ display.get(i).setDoubleWidth(false);
+ display.get(i).setDoubleHeight(0);
+ }
+ currentState.cursorY = oldCursorY;
+ }
+
+ /**
+ * VT220 printer functions. All of these are parsed, but won't do
+ * anything.
+ */
+ private void printerFunctions() {
+ boolean decPrivateModeFlag = false;
+ for (Character ch: collectBuffer) {
+ if (ch == '?') {
+ decPrivateModeFlag = true;
+ }
+ }
+
+ int i = getCsiParam(0, 0);
+
+ switch (i) {
+
+ case 0:
+ if (decPrivateModeFlag == false) {
+ // Print screen
+ }
+ break;
+
+ case 1:
+ if (decPrivateModeFlag == true) {
+ // Print cursor line
+ }
+ break;
+
+ case 4:
+ if (decPrivateModeFlag == true) {
+ // Auto print mode OFF
+ } else {
+ // Printer controller OFF
+
+ // Characters re-appear on the screen
+ printerControllerMode = false;
+ }
+ break;
+
+ case 5:
+ if (decPrivateModeFlag == true) {
+ // Auto print mode
+
+ } else {
+ // Printer controller
+
+ // Characters get sucked into oblivion
+ printerControllerMode = true;
+ }
+ break;
+
+ default:
+ break;
+
+ }
+ }
+
+ /**
+ * Handle the SCAN_OSC_STRING state. Handle this in VT100 because lots
+ * of remote systems will send an XTerm title sequence even if TERM isn't
+ * xterm.
+ *
+ * @param xtermChar the character received from the remote side
+ */
+ private void oscPut(final char xtermChar) {
+ // Collect first
+ collectBuffer.add(new Character(xtermChar));
+
+ // Xterm cases...
+ if (xtermChar == 0x07) {
+ Character [] chars = collectBuffer.toArray(new Character[0]);
+ StringBuilder args = new StringBuilder();
+ for (int j = 0; j < chars.length - 1; j++) {
+ args.append(chars[j]);
+ }
+ String [] p = args.toString().split(";");
+ if (p.length > 0) {
+ if ((p[0].equals("0")) || (p[0].equals("2"))) {
+ if (p.length > 1) {
+ // Screen title
+ screenTitle = p[1];
+ }
+ }
+ }
+
+ // Go to SCAN_GROUND state
+ toGround();
+ return;
+ }
+ }
+
+ /**
+ * Run this input character through the ECMA48 state machine.
+ *
+ * @param ch character from the remote side
+ */
+ public void consume(char ch) {
+
+ // DEBUG
+ // System.err.printf("%c", ch);
+
+ // Special case for VT10x: 7-bit characters only
+ if ((type == DeviceType.VT100) || (type == DeviceType.VT102)) {
+ ch = (char)(ch & 0x7F);
+ }
+
+ // Special "anywhere" states
+
+ // 18, 1A --> execute, then switch to SCAN_GROUND
+ if ((ch == 0x18) || (ch == 0x1A)) {
+ // CAN and SUB abort escape sequences
+ toGround();
+ return;
+ }
+
+ // 80-8F, 91-97, 99, 9A, 9C --> execute, then switch to SCAN_GROUND
+
+ // 0x1B == ESCAPE
+ if ((ch == 0x1B)
+ && (scanState != ScanState.DCS_ENTRY)
+ && (scanState != ScanState.DCS_INTERMEDIATE)
+ && (scanState != ScanState.DCS_IGNORE)
+ && (scanState != ScanState.DCS_PARAM)
+ && (scanState != ScanState.DCS_PASSTHROUGH)
+ ) {
+
+ scanState = ScanState.ESCAPE;
+ return;
+ }
+
+ // 0x9B == CSI 8-bit sequence
+ if (ch == 0x9B) {
+ scanState = ScanState.CSI_ENTRY;
+ return;
+ }
+
+ // 0x9D goes to ScanState.OSC_STRING
+ if (ch == 0x9D) {
+ scanState = ScanState.OSC_STRING;
+ return;
+ }
+
+ // 0x90 goes to DCS_ENTRY
+ if (ch == 0x90) {
+ scanState = ScanState.DCS_ENTRY;
+ return;
+ }
+
+ // 0x98, 0x9E, and 0x9F go to SOSPMAPC_STRING
+ if ((ch == 0x98) || (ch == 0x9E) || (ch == 0x9F)) {
+ scanState = ScanState.SOSPMAPC_STRING;
+ return;
+ }
+
+ // 0x7F (DEL) is always discarded
+ if (ch == 0x7F) {
+ return;
+ }
+
+ switch (scanState) {
+
+ case GROUND:
+ // 00-17, 19, 1C-1F --> execute
+ // 80-8F, 91-9A, 9C --> execute
+ if ((ch <= 0x1F) || ((ch >= 0x80) && (ch <= 0x9F))) {
+ handleControlChar(ch);
+ }
+
+ // 20-7F --> print
+ if (((ch >= 0x20) && (ch <= 0x7F))
+ || (ch >= 0xA0)
+ ) {
+
+ // VT220 printer --> trash bin
+ if (((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM))
+ && (printerControllerMode == true)
+ ) {
+ return;
+ }
+
+ // Hang onto this character
+ repCh = mapCharacter(ch);
+
+ // Print this character
+ printCharacter(repCh);
+ }
+ return;
+
+ case ESCAPE:
+ // 00-17, 19, 1C-1F --> execute
+ if (ch <= 0x1F) {
+ handleControlChar(ch);
+ return;
+ }
+
+ // 20-2F --> collect, then switch to ESCAPE_INTERMEDIATE
+ if ((ch >= 0x20) && (ch <= 0x2F)) {
+ collect(ch);
+ scanState = ScanState.ESCAPE_INTERMEDIATE;
+ return;
+ }
+
+ // 30-4F, 51-57, 59, 5A, 5C, 60-7E --> dispatch, then switch to GROUND
+ if ((ch >= 0x30) && (ch <= 0x4F)) {
+ switch (ch) {
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ break;
+ case '7':
+ // DECSC - Save cursor
+ // Note this code overlaps both ANSI and VT52 mode
+ decsc();
+ break;
+
+ case '8':
+ // DECRC - Restore cursor
+ // Note this code overlaps both ANSI and VT52 mode
+ decrc();
+ break;
+
+ case '9':
+ case ':':
+ case ';':
+ break;
+ case '<':
+ if (vt52Mode == true) {
+ // DECANM - Enter ANSI mode
+ vt52Mode = false;
+ arrowKeyMode = ArrowKeyMode.VT100;
+
+ /*
+ * From the VT102 docs: "You use ANSI mode to select
+ * most terminal features; the terminal uses the same
+ * features when it switches to VT52 mode. You
+ * cannot, however, change most of these features in
+ * VT52 mode."
+ *
+ * In other words, do not reset any other attributes
+ * when switching between VT52 submode and ANSI.
+ */
+
+ // Reset fonts
+ currentState.g0Charset = CharacterSet.US;
+ currentState.g1Charset = CharacterSet.DRAWING;
+ s8c1t = false;
+ singleshift = Singleshift.NONE;
+ currentState.glLockshift = LockshiftMode.NONE;
+ currentState.grLockshift = LockshiftMode.NONE;
+ }
+ break;
+ case '=':
+ // DECKPAM - Keypad application mode
+ // Note this code overlaps both ANSI and VT52 mode
+ deckpam();
+ break;
+ case '>':
+ // DECKPNM - Keypad numeric mode
+ // Note this code overlaps both ANSI and VT52 mode
+ deckpnm();
+ break;
+ case '?':
+ case '@':
+ break;
+ case 'A':
+ if (vt52Mode == true) {
+ // Cursor up, and stop at the top without scrolling
+ cursorUp(1, false);
+ }
+ break;
+ case 'B':
+ if (vt52Mode == true) {
+ // Cursor down, and stop at the bottom without scrolling
+ cursorDown(1, false);
+ }
+ break;
+ case 'C':
+ if (vt52Mode == true) {
+ // Cursor right, and stop at the right without scrolling
+ cursorRight(1, false);
+ }
+ break;
+ case 'D':
+ if (vt52Mode == true) {
+ // Cursor left, and stop at the left without scrolling
+ cursorLeft(1, false);
+ } else {
+ // IND - Index
+ ind();
+ }
+ break;
+ case 'E':
+ if (vt52Mode == true) {
+ // Nothing
+ } else {
+ // NEL - Next line
+ nel();
+ }
+ break;
+ case 'F':
+ if (vt52Mode == true) {
+ // G0 --> Special graphics
+ currentState.g0Charset = CharacterSet.VT52_GRAPHICS;
+ }
+ break;
+ case 'G':
+ if (vt52Mode == true) {
+ // G0 --> ASCII set
+ currentState.g0Charset = CharacterSet.US;
+ }
+ break;
+ case 'H':
+ if (vt52Mode == true) {
+ // Cursor to home
+ cursorPosition(0, 0);
+ } else {
+ // HTS - Horizontal tabulation set
+ hts();
+ }
+ break;
+ case 'I':
+ if (vt52Mode == true) {
+ // Reverse line feed. Same as RI.
+ ri();
+ }
+ break;
+ case 'J':
+ if (vt52Mode == true) {
+ // Erase to end of screen
+ eraseLine(currentState.cursorX, width - 1, false);
+ eraseScreen(currentState.cursorY + 1, 0, height - 1,
+ width - 1, false);
+ }
+ break;
+ case 'K':
+ if (vt52Mode == true) {
+ // Erase to end of line
+ eraseLine(currentState.cursorX, width - 1, false);
+ }
+ break;
+ case 'L':
+ break;
+ case 'M':
+ if (vt52Mode == true) {
+ // Nothing
+ } else {
+ // RI - Reverse index
+ ri();
+ }
+ break;
+ case 'N':
+ if (vt52Mode == false) {
+ // SS2
+ singleshift = Singleshift.SS2;
+ }
+ break;
+ case 'O':
+ if (vt52Mode == false) {
+ // SS3
+ singleshift = Singleshift.SS3;
+ }
+ break;
+ }
+ toGround();
+ return;
+ }
+ if ((ch >= 0x51) && (ch <= 0x57)) {
+ switch (ch) {
+ case 'Q':
+ case 'R':
+ case 'S':
+ case 'T':
+ case 'U':
+ case 'V':
+ case 'W':
+ break;
+ }
+ toGround();
+ return;
+ }
+ if (ch == 0x59) {
+ // 'Y'
+ if (vt52Mode == true) {
+ scanState = ScanState.VT52_DIRECT_CURSOR_ADDRESS;
+ } else {
+ toGround();
+ }
+ return;
+ }
+ if (ch == 0x5A) {
+ // 'Z'
+ if (vt52Mode == true) {
+ // Identify
+ // Send string directly to remote side
+ writeRemote("\033/Z");
+ } else {
+ // DECID
+ // Send string directly to remote side
+ writeRemote(deviceTypeResponse());
+ }
+ toGround();
+ return;
+ }
+ if (ch == 0x5C) {
+ // '\'
+ toGround();
+ return;
+ }
+
+ // VT52 cannot get to any of these other states
+ if (vt52Mode == true) {
+ toGround();
+ return;
+ }
+
+ if ((ch >= 0x60) && (ch <= 0x7E)) {
+ switch (ch) {
+ case '`':
+ case 'a':
+ case 'b':
+ break;
+ case 'c':
+ // RIS - Reset to initial state
+ reset();
+ // Do I clear screen too? I think so...
+ eraseScreen(0, 0, height - 1, width - 1, false);
+ cursorPosition(0, 0);
+ break;
+ case 'd':
+ case 'e':
+ case 'f':
+ case 'g':
+ case 'h':
+ case 'i':
+ case 'j':
+ case 'k':
+ case 'l':
+ case 'm':
+ break;
+ case 'n':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ // VT220 lockshift G2 into GL
+ currentState.glLockshift = LockshiftMode.G2_GL;
+ shiftOut = false;
+ }
+ break;
+ case 'o':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ // VT220 lockshift G3 into GL
+ currentState.glLockshift = LockshiftMode.G3_GL;
+ shiftOut = false;
+ }
+ break;
+ case 'p':
+ case 'q':
+ case 'r':
+ case 's':
+ case 't':
+ case 'u':
+ case 'v':
+ case 'w':
+ case 'x':
+ case 'y':
+ case 'z':
+ case '{':
+ break;
+ case '|':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ // VT220 lockshift G3 into GR
+ currentState.grLockshift = LockshiftMode.G3_GR;
+ shiftOut = false;
+ }
+ break;
+ case '}':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ // VT220 lockshift G2 into GR
+ currentState.grLockshift = LockshiftMode.G2_GR;
+ shiftOut = false;
+ }
+ break;
+
+ case '~':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ // VT220 lockshift G1 into GR
+ currentState.grLockshift = LockshiftMode.G1_GR;
+ shiftOut = false;
+ }
+ break;
+ }
+ toGround();
+ }
+
+ // 7F --> ignore
+
+ // 0x5B goes to CSI_ENTRY
+ if (ch == 0x5B) {
+ scanState = ScanState.CSI_ENTRY;
+ }
+
+ // 0x5D goes to OSC_STRING
+ if (ch == 0x5D) {
+ scanState = ScanState.OSC_STRING;
+ }
+
+ // 0x50 goes to DCS_ENTRY
+ if (ch == 0x50) {
+ scanState = ScanState.DCS_ENTRY;
+ }
+
+ // 0x58, 0x5E, and 0x5F go to SOSPMAPC_STRING
+ if ((ch == 0x58) || (ch == 0x5E) || (ch == 0x5F)) {
+ scanState = ScanState.SOSPMAPC_STRING;
+ }
+
+ return;
+
+ case ESCAPE_INTERMEDIATE:
+ // 00-17, 19, 1C-1F --> execute
+ if (ch <= 0x1F) {
+ handleControlChar(ch);
+ }
+
+ // 20-2F --> collect
+ if ((ch >= 0x20) && (ch <= 0x2F)) {
+ collect(ch);
+ }
+
+ // 30-7E --> dispatch, then switch to GROUND
+ if ((ch >= 0x30) && (ch <= 0x7E)) {
+ switch (ch) {
+ case '0':
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> Special graphics
+ currentState.g0Charset = CharacterSet.DRAWING;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> Special graphics
+ currentState.g1Charset = CharacterSet.DRAWING;
+ }
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> Special graphics
+ currentState.g2Charset = CharacterSet.DRAWING;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> Special graphics
+ currentState.g3Charset = CharacterSet.DRAWING;
+ }
+ }
+ break;
+ case '1':
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> Alternate character ROM standard character set
+ currentState.g0Charset = CharacterSet.ROM;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> Alternate character ROM standard character set
+ currentState.g1Charset = CharacterSet.ROM;
+ }
+ break;
+ case '2':
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> Alternate character ROM special graphics
+ currentState.g0Charset = CharacterSet.ROM_SPECIAL;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> Alternate character ROM special graphics
+ currentState.g1Charset = CharacterSet.ROM_SPECIAL;
+ }
+ break;
+ case '3':
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '#')) {
+ // DECDHL - Double-height line (top half)
+ dechdl(true);
+ }
+ break;
+ case '4':
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '#')) {
+ // DECDHL - Double-height line (bottom half)
+ dechdl(false);
+ }
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> DUTCH
+ currentState.g0Charset = CharacterSet.NRC_DUTCH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> DUTCH
+ currentState.g1Charset = CharacterSet.NRC_DUTCH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> DUTCH
+ currentState.g2Charset = CharacterSet.NRC_DUTCH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> DUTCH
+ currentState.g3Charset = CharacterSet.NRC_DUTCH;
+ }
+ }
+ break;
+ case '5':
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '#')) {
+ // DECSWL - Single-width line
+ decswl();
+ }
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> FINNISH
+ currentState.g0Charset = CharacterSet.NRC_FINNISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> FINNISH
+ currentState.g1Charset = CharacterSet.NRC_FINNISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> FINNISH
+ currentState.g2Charset = CharacterSet.NRC_FINNISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> FINNISH
+ currentState.g3Charset = CharacterSet.NRC_FINNISH;
+ }
+ }
+ break;
+ case '6':
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '#')) {
+ // DECDWL - Double-width line
+ decdwl();
+ }
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> NORWEGIAN
+ currentState.g0Charset = CharacterSet.NRC_NORWEGIAN;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> NORWEGIAN
+ currentState.g1Charset = CharacterSet.NRC_NORWEGIAN;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> NORWEGIAN
+ currentState.g2Charset = CharacterSet.NRC_NORWEGIAN;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> NORWEGIAN
+ currentState.g3Charset = CharacterSet.NRC_NORWEGIAN;
+ }
+ }
+ break;
+ case '7':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> SWEDISH
+ currentState.g0Charset = CharacterSet.NRC_SWEDISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> SWEDISH
+ currentState.g1Charset = CharacterSet.NRC_SWEDISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> SWEDISH
+ currentState.g2Charset = CharacterSet.NRC_SWEDISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> SWEDISH
+ currentState.g3Charset = CharacterSet.NRC_SWEDISH;
+ }
+ }
+ break;
+ case '8':
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '#')) {
+ // DECALN - Screen alignment display
+ decaln();
+ }
+ break;
+ case '9':
+ case ':':
+ case ';':
+ break;
+ case '<':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> DEC_SUPPLEMENTAL
+ currentState.g0Charset = CharacterSet.DEC_SUPPLEMENTAL;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> DEC_SUPPLEMENTAL
+ currentState.g1Charset = CharacterSet.DEC_SUPPLEMENTAL;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> DEC_SUPPLEMENTAL
+ currentState.g2Charset = CharacterSet.DEC_SUPPLEMENTAL;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> DEC_SUPPLEMENTAL
+ currentState.g3Charset = CharacterSet.DEC_SUPPLEMENTAL;
+ }
+ }
+ break;
+ case '=':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> SWISS
+ currentState.g0Charset = CharacterSet.NRC_SWISS;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> SWISS
+ currentState.g1Charset = CharacterSet.NRC_SWISS;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> SWISS
+ currentState.g2Charset = CharacterSet.NRC_SWISS;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> SWISS
+ currentState.g3Charset = CharacterSet.NRC_SWISS;
+ }
+ }
+ break;
+ case '>':
+ case '?':
+ case '@':
+ break;
+ case 'A':
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> United Kingdom set
+ currentState.g0Charset = CharacterSet.UK;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> United Kingdom set
+ currentState.g1Charset = CharacterSet.UK;
+ }
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> United Kingdom set
+ currentState.g2Charset = CharacterSet.UK;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> United Kingdom set
+ currentState.g3Charset = CharacterSet.UK;
+ }
+ }
+ break;
+ case 'B':
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> ASCII set
+ currentState.g0Charset = CharacterSet.US;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> ASCII set
+ currentState.g1Charset = CharacterSet.US;
+ }
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> ASCII
+ currentState.g2Charset = CharacterSet.US;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> ASCII
+ currentState.g3Charset = CharacterSet.US;
+ }
+ }
+ break;
+ case 'C':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> FINNISH
+ currentState.g0Charset = CharacterSet.NRC_FINNISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> FINNISH
+ currentState.g1Charset = CharacterSet.NRC_FINNISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> FINNISH
+ currentState.g2Charset = CharacterSet.NRC_FINNISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> FINNISH
+ currentState.g3Charset = CharacterSet.NRC_FINNISH;
+ }
+ }
+ break;
+ case 'D':
+ break;
+ case 'E':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> NORWEGIAN
+ currentState.g0Charset = CharacterSet.NRC_NORWEGIAN;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> NORWEGIAN
+ currentState.g1Charset = CharacterSet.NRC_NORWEGIAN;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> NORWEGIAN
+ currentState.g2Charset = CharacterSet.NRC_NORWEGIAN;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> NORWEGIAN
+ currentState.g3Charset = CharacterSet.NRC_NORWEGIAN;
+ }
+ }
+ break;
+ case 'F':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ' ')) {
+ // S7C1T
+ s8c1t = false;
+ }
+ }
+ break;
+ case 'G':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ' ')) {
+ // S8C1T
+ s8c1t = true;
+ }
+ }
+ break;
+ case 'H':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> SWEDISH
+ currentState.g0Charset = CharacterSet.NRC_SWEDISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> SWEDISH
+ currentState.g1Charset = CharacterSet.NRC_SWEDISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> SWEDISH
+ currentState.g2Charset = CharacterSet.NRC_SWEDISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> SWEDISH
+ currentState.g3Charset = CharacterSet.NRC_SWEDISH;
+ }
+ }
+ break;
+ case 'I':
+ case 'J':
+ break;
+ case 'K':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> GERMAN
+ currentState.g0Charset = CharacterSet.NRC_GERMAN;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> GERMAN
+ currentState.g1Charset = CharacterSet.NRC_GERMAN;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> GERMAN
+ currentState.g2Charset = CharacterSet.NRC_GERMAN;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> GERMAN
+ currentState.g3Charset = CharacterSet.NRC_GERMAN;
+ }
+ }
+ break;
+ case 'L':
+ case 'M':
+ case 'N':
+ case 'O':
+ case 'P':
+ break;
+ case 'Q':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> FRENCH_CA
+ currentState.g0Charset = CharacterSet.NRC_FRENCH_CA;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> FRENCH_CA
+ currentState.g1Charset = CharacterSet.NRC_FRENCH_CA;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> FRENCH_CA
+ currentState.g2Charset = CharacterSet.NRC_FRENCH_CA;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> FRENCH_CA
+ currentState.g3Charset = CharacterSet.NRC_FRENCH_CA;
+ }
+ }
+ break;
+ case 'R':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> FRENCH
+ currentState.g0Charset = CharacterSet.NRC_FRENCH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> FRENCH
+ currentState.g1Charset = CharacterSet.NRC_FRENCH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> FRENCH
+ currentState.g2Charset = CharacterSet.NRC_FRENCH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> FRENCH
+ currentState.g3Charset = CharacterSet.NRC_FRENCH;
+ }
+ }
+ break;
+ case 'S':
+ case 'T':
+ case 'U':
+ case 'V':
+ case 'W':
+ case 'X':
+ break;
+ case 'Y':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> ITALIAN
+ currentState.g0Charset = CharacterSet.NRC_ITALIAN;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> ITALIAN
+ currentState.g1Charset = CharacterSet.NRC_ITALIAN;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> ITALIAN
+ currentState.g2Charset = CharacterSet.NRC_ITALIAN;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> ITALIAN
+ currentState.g3Charset = CharacterSet.NRC_ITALIAN;
+ }
+ }
+ break;
+ case 'Z':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '(')) {
+ // G0 --> SPANISH
+ currentState.g0Charset = CharacterSet.NRC_SPANISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == ')')) {
+ // G1 --> SPANISH
+ currentState.g1Charset = CharacterSet.NRC_SPANISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '*')) {
+ // G2 --> SPANISH
+ currentState.g2Charset = CharacterSet.NRC_SPANISH;
+ }
+ if ((collectBuffer.size() == 1)
+ && (collectBuffer.get(0) == '+')) {
+ // G3 --> SPANISH
+ currentState.g3Charset = CharacterSet.NRC_SPANISH;
+ }
+ }
+ break;
+ case '[':
+ case '\\':
+ case ']':
+ case '^':
+ case '_':
+ case '`':
+ case 'a':
+ case 'b':
+ case 'c':
+ case 'd':
+ case 'e':
+ case 'f':
+ case 'g':
+ case 'h':
+ case 'i':
+ case 'j':
+ case 'k':
+ case 'l':
+ case 'm':
+ case 'n':
+ case 'o':
+ case 'p':
+ case 'q':
+ case 'r':
+ case 's':
+ case 't':
+ case 'u':
+ case 'v':
+ case 'w':
+ case 'x':
+ case 'y':
+ case 'z':
+ case '{':
+ case '|':
+ case '}':
+ case '~':
+ break;
+ }
+ toGround();
+ }
+
+ // 7F --> ignore
+
+ // 0x9C goes to GROUND
+ if (ch == 0x9C) {
+ toGround();
+ }
+
+ return;
+
+ case CSI_ENTRY:
+ // 00-17, 19, 1C-1F --> execute
+ if (ch <= 0x1F) {
+ handleControlChar(ch);
+ }
+
+ // 20-2F --> collect, then switch to CSI_INTERMEDIATE
+ if ((ch >= 0x20) && (ch <= 0x2F)) {
+ collect(ch);
+ scanState = ScanState.CSI_INTERMEDIATE;
+ }
+
+ // 30-39, 3B --> param, then switch to CSI_PARAM
+ if ((ch >= '0') && (ch <= '9')) {
+ param((byte) ch);
+ scanState = ScanState.CSI_PARAM;
+ }
+ if (ch == ';') {
+ param((byte) ch);
+ scanState = ScanState.CSI_PARAM;
+ }
+
+ // 3C-3F --> collect, then switch to CSI_PARAM
+ if ((ch >= 0x3C) && (ch <= 0x3F)) {
+ collect(ch);
+ scanState = ScanState.CSI_PARAM;
+ }
+
+ // 40-7E --> dispatch, then switch to GROUND
+ if ((ch >= 0x40) && (ch <= 0x7E)) {
+ switch (ch) {
+ case '@':
+ // ICH - Insert character
+ ich();
+ break;
+ case 'A':
+ // CUU - Cursor up
+ cuu();
+ break;
+ case 'B':
+ // CUD - Cursor down
+ cud();
+ break;
+ case 'C':
+ // CUF - Cursor forward
+ cuf();
+ break;
+ case 'D':
+ // CUB - Cursor backward
+ cub();
+ break;
+ case 'E':
+ // CNL - Cursor down and to column 1
+ if (type == DeviceType.XTERM) {
+ cnl();
+ }
+ break;
+ case 'F':
+ // CPL - Cursor up and to column 1
+ if (type == DeviceType.XTERM) {
+ cpl();
+ }
+ break;
+ case 'G':
+ // CHA - Cursor to column # in current row
+ if (type == DeviceType.XTERM) {
+ cha();
+ }
+ break;
+ case 'H':
+ // CUP - Cursor position
+ cup();
+ break;
+ case 'I':
+ // CHT - Cursor forward X tab stops (default 1)
+ if (type == DeviceType.XTERM) {
+ cht();
+ }
+ break;
+ case 'J':
+ // ED - Erase in display
+ ed();
+ break;
+ case 'K':
+ // EL - Erase in line
+ el();
+ break;
+ case 'L':
+ // IL - Insert line
+ il();
+ break;
+ case 'M':
+ // DL - Delete line
+ dl();
+ break;
+ case 'N':
+ case 'O':
+ break;
+ case 'P':
+ // DCH - Delete character
+ dch();
+ break;
+ case 'Q':
+ case 'R':
+ break;
+ case 'S':
+ // Scroll up X lines (default 1)
+ if (type == DeviceType.XTERM) {
+ su();
+ }
+ break;
+ case 'T':
+ // Scroll down X lines (default 1)
+ if (type == DeviceType.XTERM) {
+ sd();
+ }
+ break;
+ case 'U':
+ case 'V':
+ case 'W':
+ break;
+ case 'X':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ // ECH - Erase character
+ ech();
+ }
+ break;
+ case 'Y':
+ break;
+ case 'Z':
+ // CBT - Cursor backward X tab stops (default 1)
+ if (type == DeviceType.XTERM) {
+ cbt();
+ }
+ break;
+ case '[':
+ case '\\':
+ case ']':
+ case '^':
+ case '_':
+ break;
+ case '`':
+ // HPA - Cursor to column # in current row. Same as CHA
+ if (type == DeviceType.XTERM) {
+ cha();
+ }
+ break;
+ case 'a':
+ // HPR - Cursor right. Same as CUF
+ if (type == DeviceType.XTERM) {
+ cuf();
+ }
+ break;
+ case 'b':
+ // REP - Repeat last char X times
+ if (type == DeviceType.XTERM) {
+ rep();
+ }
+ break;
+ case 'c':
+ // DA - Device attributes
+ da();
+ break;
+ case 'd':
+ // VPA - Cursor to row, current column.
+ if (type == DeviceType.XTERM) {
+ vpa();
+ }
+ break;
+ case 'e':
+ // VPR - Cursor down. Same as CUD
+ if (type == DeviceType.XTERM) {
+ cud();
+ }
+ break;
+ case 'f':
+ // HVP - Horizontal and vertical position
+ hvp();
+ break;
+ case 'g':
+ // TBC - Tabulation clear
+ tbc();
+ break;
+ case 'h':
+ // Sets an ANSI or DEC private toggle
+ setToggle(true);
+ break;
+ case 'i':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ // Printer functions
+ printerFunctions();
+ }
+ break;
+ case 'j':
+ case 'k':
+ break;
+ case 'l':
+ // Sets an ANSI or DEC private toggle
+ setToggle(false);
+ break;
+ case 'm':
+ // SGR - Select graphics rendition
+ sgr();
+ break;
+ case 'n':
+ // DSR - Device status report
+ dsr();
+ break;
+ case 'o':
+ case 'p':
+ break;
+ case 'q':
+ // DECLL - Load leds
+ // Not supported
+ break;
+ case 'r':
+ // DECSTBM - Set top and bottom margins
+ decstbm();
+ break;
+ case 's':
+ // Save cursor (ANSI.SYS)
+ if (type == DeviceType.XTERM) {
+ savedState.cursorX = currentState.cursorX;
+ savedState.cursorY = currentState.cursorY;
+ }
+ break;
+ case 't':
+ break;
+ case 'u':
+ // Restore cursor (ANSI.SYS)
+ if (type == DeviceType.XTERM) {
+ cursorPosition(savedState.cursorY, savedState.cursorX);
+ }
+ break;
+ case 'v':
+ case 'w':
+ break;
+ case 'x':
+ // DECREQTPARM - Request terminal parameters
+ decreqtparm();
+ break;
+ case 'y':
+ case 'z':
+ case '{':
+ case '|':
+ case '}':
+ case '~':
+ break;
+ }
+ toGround();
+ }
+
+ // 7F --> ignore
+
+ // 0x9C goes to GROUND
+ if (ch == 0x9C) {
+ toGround();
+ }
+
+ // 0x3A goes to CSI_IGNORE
+ if (ch == 0x3A) {
+ scanState = ScanState.CSI_IGNORE;
+ }
+ return;
+
+ case CSI_PARAM:
+ // 00-17, 19, 1C-1F --> execute
+ if (ch <= 0x1F) {
+ handleControlChar(ch);
+ }
+
+ // 20-2F --> collect, then switch to CSI_INTERMEDIATE
+ if ((ch >= 0x20) && (ch <= 0x2F)) {
+ collect(ch);
+ scanState = ScanState.CSI_INTERMEDIATE;
+ }
+
+ // 30-39, 3B --> param
+ if ((ch >= '0') && (ch <= '9')) {
+ param((byte) ch);
+ }
+ if (ch == ';') {
+ param((byte) ch);
+ }
+
+ // 0x3A goes to CSI_IGNORE
+ if (ch == 0x3A) {
+ scanState = ScanState.CSI_IGNORE;
+ }
+ // 0x3C-3F goes to CSI_IGNORE
+ if ((ch >= 0x3C) && (ch <= 0x3F)) {
+ scanState = ScanState.CSI_IGNORE;
+ }
+
+ // 40-7E --> dispatch, then switch to GROUND
+ if ((ch >= 0x40) && (ch <= 0x7E)) {
+ switch (ch) {
+ case '@':
+ // ICH - Insert character
+ ich();
+ break;
+ case 'A':
+ // CUU - Cursor up
+ cuu();
+ break;
+ case 'B':
+ // CUD - Cursor down
+ cud();
+ break;
+ case 'C':
+ // CUF - Cursor forward
+ cuf();
+ break;
+ case 'D':
+ // CUB - Cursor backward
+ cub();
+ break;
+ case 'E':
+ // CNL - Cursor down and to column 1
+ if (type == DeviceType.XTERM) {
+ cnl();
+ }
+ break;
+ case 'F':
+ // CPL - Cursor up and to column 1
+ if (type == DeviceType.XTERM) {
+ cpl();
+ }
+ break;
+ case 'G':
+ // CHA - Cursor to column # in current row
+ if (type == DeviceType.XTERM) {
+ cha();
+ }
+ break;
+ case 'H':
+ // CUP - Cursor position
+ cup();
+ break;
+ case 'I':
+ // CHT - Cursor forward X tab stops (default 1)
+ if (type == DeviceType.XTERM) {
+ cht();
+ }
+ break;
+ case 'J':
+ // ED - Erase in display
+ ed();
+ break;
+ case 'K':
+ // EL - Erase in line
+ el();
+ break;
+ case 'L':
+ // IL - Insert line
+ il();
+ break;
+ case 'M':
+ // DL - Delete line
+ dl();
+ break;
+ case 'N':
+ case 'O':
+ break;
+ case 'P':
+ // DCH - Delete character
+ dch();
+ break;
+ case 'Q':
+ case 'R':
+ break;
+ case 'S':
+ // Scroll up X lines (default 1)
+ if (type == DeviceType.XTERM) {
+ su();
+ }
+ break;
+ case 'T':
+ // Scroll down X lines (default 1)
+ if (type == DeviceType.XTERM) {
+ sd();
+ }
+ break;
+ case 'U':
+ case 'V':
+ case 'W':
+ break;
+ case 'X':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ // ECH - Erase character
+ ech();
+ }
+ break;
+ case 'Y':
+ break;
+ case 'Z':
+ // CBT - Cursor backward X tab stops (default 1)
+ if (type == DeviceType.XTERM) {
+ cbt();
+ }
+ break;
+ case '[':
+ case '\\':
+ case ']':
+ case '^':
+ case '_':
+ break;
+ case '`':
+ // HPA - Cursor to column # in current row. Same as CHA
+ if (type == DeviceType.XTERM) {
+ cha();
+ }
+ break;
+ case 'a':
+ // HPR - Cursor right. Same as CUF
+ if (type == DeviceType.XTERM) {
+ cuf();
+ }
+ break;
+ case 'b':
+ // REP - Repeat last char X times
+ if (type == DeviceType.XTERM) {
+ rep();
+ }
+ break;
+ case 'c':
+ // DA - Device attributes
+ da();
+ break;
+ case 'd':
+ // VPA - Cursor to row, current column.
+ if (type == DeviceType.XTERM) {
+ vpa();
+ }
+ break;
+ case 'e':
+ // VPR - Cursor down. Same as CUD
+ if (type == DeviceType.XTERM) {
+ cud();
+ }
+ break;
+ case 'f':
+ // HVP - Horizontal and vertical position
+ hvp();
+ break;
+ case 'g':
+ // TBC - Tabulation clear
+ tbc();
+ break;
+ case 'h':
+ // Sets an ANSI or DEC private toggle
+ setToggle(true);
+ break;
+ case 'i':
+ if ((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM)) {
+
+ // Printer functions
+ printerFunctions();
+ }
+ break;
+ case 'j':
+ case 'k':
+ break;
+ case 'l':
+ // Sets an ANSI or DEC private toggle
+ setToggle(false);
+ break;
+ case 'm':
+ // SGR - Select graphics rendition
+ sgr();
+ break;
+ case 'n':
+ // DSR - Device status report
+ dsr();
+ break;
+ case 'o':
+ case 'p':
+ break;
+ case 'q':
+ // DECLL - Load leds
+ // Not supported
+ break;
+ case 'r':
+ // DECSTBM - Set top and bottom margins
+ decstbm();
+ break;
+ case 's':
+ case 't':
+ case 'u':
+ case 'v':
+ case 'w':
+ break;
+ case 'x':
+ // DECREQTPARM - Request terminal parameters
+ decreqtparm();
+ break;
+ case 'y':
+ case 'z':
+ case '{':
+ case '|':
+ case '}':
+ case '~':
+ break;
+ }
+ toGround();
+ }
+
+ // 7F --> ignore
+ return;
+
+ case CSI_INTERMEDIATE:
+ // 00-17, 19, 1C-1F --> execute
+ if (ch <= 0x1F) {
+ handleControlChar(ch);
+ }
+
+ // 20-2F --> collect
+ if ((ch >= 0x20) && (ch <= 0x2F)) {
+ collect(ch);
+ }
+
+ // 0x30-3F goes to CSI_IGNORE
+ if ((ch >= 0x30) && (ch <= 0x3F)) {
+ scanState = ScanState.CSI_IGNORE;
+ }
+
+ // 40-7E --> dispatch, then switch to GROUND
+ if ((ch >= 0x40) && (ch <= 0x7E)) {
+ switch (ch) {
+ case '@':
+ case 'A':
+ case 'B':
+ case 'C':
+ case 'D':
+ case 'E':
+ case 'F':
+ case 'G':
+ case 'H':
+ case 'I':
+ case 'J':
+ case 'K':
+ case 'L':
+ case 'M':
+ case 'N':
+ case 'O':
+ case 'P':
+ case 'Q':
+ case 'R':
+ case 'S':
+ case 'T':
+ case 'U':
+ case 'V':
+ case 'W':
+ case 'X':
+ case 'Y':
+ case 'Z':
+ case '[':
+ case '\\':
+ case ']':
+ case '^':
+ case '_':
+ case '`':
+ case 'a':
+ case 'b':
+ case 'c':
+ case 'd':
+ case 'e':
+ case 'f':
+ case 'g':
+ case 'h':
+ case 'i':
+ case 'j':
+ case 'k':
+ case 'l':
+ case 'm':
+ case 'n':
+ case 'o':
+ break;
+ case 'p':
+ if (((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM))
+ && (collectBuffer.get(collectBuffer.size() - 1) == '\"')
+ ) {
+ // DECSCL - compatibility level
+ decscl();
+ }
+ if ((type == DeviceType.XTERM)
+ && (collectBuffer.get(collectBuffer.size() - 1) == '!')
+ ) {
+ // DECSTR - Soft terminal reset
+ decstr();
+ }
+ break;
+ case 'q':
+ if (((type == DeviceType.VT220)
+ || (type == DeviceType.XTERM))
+ && (collectBuffer.get(collectBuffer.size() - 1) == '\"')
+ ) {
+ // DECSCA
+ decsca();
+ }
+ break;
+ case 'r':
+ case 's':
+ case 't':
+ case 'u':
+ case 'v':
+ case 'w':
+ case 'x':
+ case 'y':
+ case 'z':
+ case '{':
+ case '|':
+ case '}':
+ case '~':
+ break;
+ }
+ toGround();
+ }
+
+ // 7F --> ignore
+ return;
+
+ case CSI_IGNORE:
+ // 00-17, 19, 1C-1F --> execute
+ if (ch <= 0x1F) {
+ handleControlChar(ch);
+ }
+
+ // 20-2F --> collect
+ if ((ch >= 0x20) && (ch <= 0x2F)) {
+ collect(ch);
+ }
+
+ // 40-7E --> ignore, then switch to GROUND
+ if ((ch >= 0x40) && (ch <= 0x7E)) {
+ toGround();
+ }
+
+ // 20-3F, 7F --> ignore
+
+ return;
+
+ case DCS_ENTRY:
+
+ // 0x9C goes to GROUND
+ if (ch == 0x9C) {
+ toGround();
+ }
+
+ // 0x1B 0x5C goes to GROUND
+ if (ch == 0x1B) {
+ collect(ch);
+ }
+ if (ch == 0x5C) {
+ if ((collectBuffer.size() > 0)
+ && (collectBuffer.get(collectBuffer.size() - 1) == 0x1B)) {
+ toGround();
+ }
+ }
+
+ // 20-2F --> collect, then switch to DCS_INTERMEDIATE
+ if ((ch >= 0x20) && (ch <= 0x2F)) {
+ collect(ch);
+ scanState = ScanState.DCS_INTERMEDIATE;
+ }
+
+ // 30-39, 3B --> param, then switch to DCS_PARAM
+ if ((ch >= '0') && (ch <= '9')) {
+ param((byte) ch);
+ scanState = ScanState.DCS_PARAM;
+ }
+ if (ch == ';') {
+ param((byte) ch);
+ scanState = ScanState.DCS_PARAM;
+ }
+
+ // 3C-3F --> collect, then switch to DCS_PARAM
+ if ((ch >= 0x3C) && (ch <= 0x3F)) {
+ collect(ch);
+ scanState = ScanState.DCS_PARAM;
+ }
+
+ // 00-17, 19, 1C-1F, 7F --> ignore
+
+ // 0x3A goes to DCS_IGNORE
+ if (ch == 0x3F) {
+ scanState = ScanState.DCS_IGNORE;
+ }
+
+ // 0x40-7E goes to DCS_PASSTHROUGH
+ if ((ch >= 0x40) && (ch <= 0x7E)) {
+ scanState = ScanState.DCS_PASSTHROUGH;
+ }
+ return;
+
+ case DCS_INTERMEDIATE:
+
+ // 0x9C goes to GROUND
+ if (ch == 0x9C) {
+ toGround();
+ }
+
+ // 0x1B 0x5C goes to GROUND
+ if (ch == 0x1B) {
+ collect(ch);
+ }
+ if (ch == 0x5C) {
+ if ((collectBuffer.size() > 0) &&
+ (collectBuffer.get(collectBuffer.size() - 1) == 0x1B)) {
+ toGround();
+ }
+ }
+
+ // 0x30-3F goes to DCS_IGNORE
+ if ((ch >= 0x30) && (ch <= 0x3F)) {
+ scanState = ScanState.DCS_IGNORE;
+ }
+
+ // 0x40-7E goes to DCS_PASSTHROUGH
+ if ((ch >= 0x40) && (ch <= 0x7E)) {
+ scanState = ScanState.DCS_PASSTHROUGH;
+ }
+
+ // 00-17, 19, 1C-1F, 7F --> ignore
+ return;
+
+ case DCS_PARAM:
+
+ // 0x9C goes to GROUND
+ if (ch == 0x9C) {
+ toGround();
+ }
+
+ // 0x1B 0x5C goes to GROUND
+ if (ch == 0x1B) {
+ collect(ch);
+ }
+ if (ch == 0x5C) {
+ if ((collectBuffer.size() > 0) &&
+ (collectBuffer.get(collectBuffer.size() - 1) == 0x1B)) {
+ toGround();
+ }
+ }
+
+ // 20-2F --> collect, then switch to DCS_INTERMEDIATE
+ if ((ch >= 0x20) && (ch <= 0x2F)) {
+ collect(ch);
+ scanState = ScanState.DCS_INTERMEDIATE;
+ }
+
+ // 30-39, 3B --> param
+ if ((ch >= '0') && (ch <= '9')) {
+ param((byte) ch);
+ }
+ if (ch == ';') {
+ param((byte) ch);
+ }
+
+ // 00-17, 19, 1C-1F, 7F --> ignore
+
+ // 0x3A, 3C-3F goes to DCS_IGNORE
+ if (ch == 0x3F) {
+ scanState = ScanState.DCS_IGNORE;
+ }
+ if ((ch >= 0x3C) && (ch <= 0x3F)) {
+ scanState = ScanState.DCS_IGNORE;
+ }
+
+ // 0x40-7E goes to DCS_PASSTHROUGH
+ if ((ch >= 0x40) && (ch <= 0x7E)) {
+ scanState = ScanState.DCS_PASSTHROUGH;
+ }
+ return;
+
+ case DCS_PASSTHROUGH:
+ // 0x9C goes to GROUND
+ if (ch == 0x9C) {
+ toGround();
+ }
+
+ // 0x1B 0x5C goes to GROUND
+ if (ch == 0x1B) {
+ collect(ch);
+ }
+ if (ch == 0x5C) {
+ if ((collectBuffer.size() > 0)
+ && (collectBuffer.get(collectBuffer.size() - 1) == 0x1B)
+ ) {
+ toGround();
+ }
+ }
+
+ // 00-17, 19, 1C-1F, 20-7E --> put
+ // TODO
+ if (ch <= 0x17) {
+ return;
+ }
+ if (ch == 0x19) {
+ return;
+ }
+ if ((ch >= 0x1C) && (ch <= 0x1F)) {
+ return;
+ }
+ if ((ch >= 0x20) && (ch <= 0x7E)) {
+ return;
+ }
+
+ // 7F --> ignore
+
+ return;
+
+ case DCS_IGNORE:
+ // 00-17, 19, 1C-1F, 20-7F --> ignore
+
+ // 0x9C goes to GROUND
+ if (ch == 0x9C) {
+ toGround();
+ }
+
+ return;
+
+ case SOSPMAPC_STRING:
+ // 00-17, 19, 1C-1F, 20-7F --> ignore
+
+ // 0x9C goes to GROUND
+ if (ch == 0x9C) {
+ toGround();
+ }
+
+ return;
+
+ case OSC_STRING:
+ // Special case for Xterm: OSC can pass control characters
+ if ((ch == 0x9C) || (ch <= 0x07)) {
+ oscPut(ch);
+ }
+
+ // 00-17, 19, 1C-1F --> ignore
+
+ // 20-7F --> osc_put
+ if ((ch >= 0x20) && (ch <= 0x7F)) {
+ oscPut(ch);
+ }
+
+ // 0x9C goes to GROUND
+ if (ch == 0x9C) {
+ toGround();
+ }
+
+ return;
+
+ case VT52_DIRECT_CURSOR_ADDRESS:
+ // This is a special case for the VT52 sequence "ESC Y l c"
+ if (collectBuffer.size() == 0) {
+ collect(ch);
+ } else if (collectBuffer.size() == 1) {
+ // We've got the two characters, one in the buffer and the
+ // other in ch.
+ cursorPosition(collectBuffer.get(0) - '\040', ch - '\040');
+ toGround();
+ }
+ return;
+ }
+
+ }
+
+ /**
+ * Expose current cursor X to outside world.
+ *
+ * @return current cursor X
+ */
+ public final int getCursorX() {
+ return currentState.cursorX;
+ }
+
+ /**
+ * Expose current cursor Y to outside world.
+ *
+ * @return current cursor Y
+ */
+ public final int getCursorY() {
+ return currentState.cursorY;
+ }
+
+ /**
+ * Read function runs on a separate thread.
+ */
+ public void run() {
+ boolean utf8 = false;
+ boolean done = false;
+
+ if (type == DeviceType.XTERM) {
+ utf8 = true;
+ }
+
+ // available() will often return > 1, so we need to read in chunks to
+ // stay caught up.
+ char [] readBufferUTF8 = null;
+ byte [] readBuffer = null;
+ if (utf8) {
+ readBufferUTF8 = new char[128];
+ } else {
+ readBuffer = new byte[128];
+ }
+
+ while (!done && !stopReaderThread) {
+ try {
+ // We assume that if inputStream has bytes available, then
+ // input won't block on read().
+ int n = inputStream.available();
+ if (n > 0) {
+ // System.err.printf("available() %d\n", n); System.err.flush();
+ if (utf8) {
+ if (readBufferUTF8.length < n) {
+ // The buffer wasn't big enough, make it huger
+ int newSize = Math.max(readBufferUTF8.length * 2, n);
+
+ readBufferUTF8 = new char[newSize];
+ }
+ } else {
+ if (readBuffer.length < n) {
+ // The buffer wasn't big enough, make it huger
+ int newSize = Math.max(readBuffer.length * 2, n);
+ readBuffer = new byte[newSize];
+ }
+ }
+
+ int rc = -1;
+ if (utf8) {
+ rc = input.read(readBufferUTF8, 0, n);
+ } else {
+ rc = inputStream.read(readBuffer, 0, n);
+ }
+ // System.err.printf("read() %d\n", rc); System.err.flush();
+ if (rc == -1) {
+ // This is EOF
+ done = true;
+ } else {
+ for (int i = 0; i < rc; i++) {
+ int ch = 0;
+ if (utf8) {
+ ch = readBufferUTF8[i];
+ } else {
+ ch = readBuffer[i];
+ }
+ // Don't step on UI events
+ synchronized (this) {
+ consume((char)ch);
+ }
+ }
+ }
+ } else {
+ // Wait 10 millis for more data
+ Thread.sleep(10);
+ }
+ // System.err.println("end while loop"); System.err.flush();
+ } catch (InterruptedException e) {
+ // SQUASH
+ } catch (IOException e) {
+ e.printStackTrace();
+ done = true;
+ }
+ } // while ((done == false) && (stopReaderThread == false))
+
+ // Close the input stream
+ try {
+ if (utf8) {
+ input.close();
+ input = null;
+ inputStream = null;
+ } else {
+ inputStream.close();
+ inputStream = null;
+ }
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+
+ // Let the rest of the world know that I am done.
+ stopReaderThread = true;
+
+ // System.err.println("*** run() exiting..."); System.err.flush();
+ }
+
+}
git://git.nikiroo.be / fanfix-jexer.git / commitdiff