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3
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1 /**
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2 * Title: ScreenPlanes.java
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3 * Copyright: Copyright (c) 2001
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4 * Company:
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5 * @author Kenneth J. Pouncey
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6 * @version 0.5
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7 *
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8 * Description:
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9 *
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10 * This program is free software; you can redistribute it and/or modify
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11 * it under the terms of the GNU General Public License as published by
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12 * the Free Software Foundation; either version 2, or (at your option)
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13 * any later version.
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14 *
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15 * This program is distributed in the hope that it will be useful,
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16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 * GNU General Public License for more details.
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19 *
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20 * You should have received a copy of the GNU General Public License
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21 * along with this software; see the file COPYING. If not, write to
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22 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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23 * Boston, MA 02111-1307 USA
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24 *
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25 */
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26 package org.tn5250j.framework.tn5250;
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27
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28 import static org.tn5250j.TN5250jConstants.*;
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29
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30 import java.util.Properties;
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31
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32 public class ScreenPlanes {
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33
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34 private final Screen5250 scr;
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35 private int screenSize;
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36 private int numRows;
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37 private int numCols;
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38 private int errorLineNum;
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39
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40 private static final int initAttr = 32;
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41 private static final char initChar = 0;
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42
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43 protected char[] screen; // text plane
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44 private char[] screenAttr; // attribute plane
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45 private char[] screenGUI; // gui plane
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46 private char[] screenIsAttr;
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47 private char[] fieldExtended;
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48 private char[] screenField;
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49 private char[] screenColor; // color plane
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50 protected char[] screenExtended; // extended plane
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51 private char[] screenIsChanged;
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52
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53 private char[] initArray;
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54
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55 private char[] errorLine;
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56 private char[] errorLineAttr;
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57 private char[] errorLineIsAttr;
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58 private char[] errorLineGui;
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59
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60 public ScreenPlanes(Screen5250 s5250, int size) {
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61
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62 scr = s5250;
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63 setSize(size);
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64 }
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65
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66 protected void setSize(int newSize) {
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67
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68 screenSize = newSize;
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69
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70 numCols = 80;
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71 switch (newSize) {
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72 case 24:
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73 numRows = 24;
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74 break;
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75 case 27:
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76 numRows = 27;
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77 numCols = 132;
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78 break;
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79
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80 }
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81
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82 // this is used here when size changes
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83 setErrorLine(numRows);
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84
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85 screenSize = numRows * numCols;
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86 screen = new char[screenSize];
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87 screenAttr = new char[screenSize];
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88 screenIsAttr = new char[screenSize];
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89 screenGUI = new char[screenSize];
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90 screenColor = new char[screenSize];
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91 screenExtended = new char[screenSize];
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92 fieldExtended = new char[screenSize];
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93 screenIsChanged = new char[screenSize];
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94 screenField = new char[screenSize];
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95
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96 initArray = new char[screenSize];
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97
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98 initalizePlanes();
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99 }
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100
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101 protected void setErrorLine (int line) {
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102
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103 // * NOTE * for developers I have changed the send qry to pass different
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104 // parameters to the host so check setsize for setting error line as well.
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105 //
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106 if (line == 0 || line > numRows)
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107 errorLineNum = numRows;
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108 else
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109 errorLineNum = line;
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110 }
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111
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112 /**
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113 * Returns the current error line number
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114 *
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115 * @return current error line number
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116 */
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117 protected int getErrorLine() {
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118 return errorLineNum;
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119 }
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120
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121 protected void saveErrorLine() {
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122
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123 // if there is already an error line saved then do not save it again
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124 // This signifies that there was a previous error and the original error
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125 // line was not restored yet.
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126 if (errorLine == null) {
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127 errorLine = new char[numCols];
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128 errorLineAttr = new char[numCols];
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129 errorLineIsAttr = new char[numCols];
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130 errorLineGui = new char[numCols];
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131
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132 int r = scr.getPos(errorLineNum-1,0);
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133
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134 for (int x = 0;x < numCols; x++) {
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135 errorLine[x] = screen[r+x];
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136 errorLineAttr[x] = screenAttr[r+x];
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137 errorLineIsAttr[x] = screenIsAttr[r+x];
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138 errorLineGui[x] = screenGUI[r+x];
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139 }
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140 }
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141 }
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142
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143 /**
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144 * Restores the error line characters from the save buffer.
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145 *
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146 * @see #saveErrorLine()
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147 */
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148 protected void restoreErrorLine() {
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149
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150 if (errorLine != null) {
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151 int r = scr.getPos(errorLineNum - 1, 0);
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152
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153 for (int x = 0; x < numCols - 1; x++) {
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154 setScreenCharAndAttr(r+x,errorLine[x],errorLineAttr[x],
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155 (errorLineIsAttr[x] == '1' ? true : false));
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156 screenGUI[x] = errorLineGui[x];
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157 }
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158
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159 errorLine = null;
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160 errorLineAttr = null;
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161 errorLineIsAttr = null;
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162 errorLineGui = null;
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163 }
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164 }
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165
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166 protected boolean isErrorLineSaved() {
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167 return errorLine == null ? false : true;
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168 }
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169
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170 protected void setScreenCharAndAttr(int pos, char c, int attr, boolean isAttr) {
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171
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172 screen[pos] = c;
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173 screenAttr[pos] = (char)attr;
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174 disperseAttribute(pos,attr);
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175 screenIsAttr[pos] = (isAttr ? (char)1 : (char)0);
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176 screenGUI[pos] = NO_GUI;
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177
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178 }
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179
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180 protected void setScreenAttr(int pos, int attr, boolean isAttr) {
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181
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182 screenAttr[pos] = (char)attr;
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183 screenIsAttr[pos] = isAttr ? (char)1 : (char)0;
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184 disperseAttribute(pos,attr);
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185 screenGUI[pos] = initChar;
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186
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187 }
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188
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189 protected void setScreenAttr(int pos, int attr) {
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190
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191 screenAttr[pos] = (char)attr;
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192 //screenGUI[pos] = initChar;
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193 disperseAttribute(pos,attr);
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194
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195 }
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196
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197 protected void setScreenFieldAttr(int pos, int attr) {
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198
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199 screenField[pos] = (char)attr;
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200
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201 }
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202
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203 protected final void setChar(int pos, char c) {
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204 screenIsChanged[pos] = screen[pos] == c ? '0' : '1';
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205 screen[pos] = c;
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206 if (screenIsAttr[pos] == 1)
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207 setScreenCharAndAttr(pos,c,32,false);
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208
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209 }
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210
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211 protected final char getChar(int pos) {
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212 return screen[pos];
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213 }
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214
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215 protected final int getCharAttr(int pos) {
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216 return screenAttr[pos];
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217 }
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218
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219 protected final boolean isAttributePlace(int pos) {
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220 return screenIsAttr[pos] == 1 ? true : false;
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221 }
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222
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223 public final void setUseGUI(int pos, int which) {
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224
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225 screenIsChanged[pos] = screenGUI[pos] == which ? '0' : '1';
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226 screenGUI[pos] = (char)which;
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227 }
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228
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229 private void disperseAttribute(int pos, int attr) {
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230
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231 char c = 0;
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232 char cs = 0;
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233 char ul = 0;
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234 char nd = 0;
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235
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236 if(attr == 0)
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237 return;
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238
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239 switch(attr) {
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240 case 32: // green normal
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241 c = ATTR_32;
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242 break;
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243
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244 case 33: // green/revers
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245 c = ATTR_33;
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246 break;
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247
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248 case 34: // white normal
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249 c = ATTR_34;
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250 break;
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251
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252 case 35: // white/reverse
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253 c = ATTR_35;
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254 break;
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255
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256 case 36: // green/underline
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257 c = ATTR_36;
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258 ul = EXTENDED_5250_UNDERLINE;
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259 break;
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260
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261 case 37: // green/reverse/underline
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262 c = ATTR_37;
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263 ul = EXTENDED_5250_UNDERLINE;
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264 break;
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265
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266 case 38: // white/underline
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267 c = ATTR_38;
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268 ul = EXTENDED_5250_UNDERLINE;
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269 break;
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270
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271 case 39:
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272 nd = EXTENDED_5250_NON_DSP;
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273 break;
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274
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275 case 40:
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276 case 42: // red/normal
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277 c = ATTR_40;
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278 break;
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279
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280 case 41:
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281 case 43: // red/reverse
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282 c = ATTR_41;
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283 break;
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284
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285 case 44:
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286 case 46: // red/underline
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287 c = ATTR_44;
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288 ul = EXTENDED_5250_UNDERLINE;
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289 break;
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290
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291 case 45: // red/reverse/underline
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292 c = ATTR_45;
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293 ul = EXTENDED_5250_UNDERLINE;
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294 break;
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295
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296 case 47:
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297 nd = EXTENDED_5250_NON_DSP;
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298 break;
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299
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300 case 48:
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301 c = ATTR_48;
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302 cs = EXTENDED_5250_COL_SEP;
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303 break;
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304
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305 case 49:
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306 c = ATTR_49;
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307 cs = EXTENDED_5250_COL_SEP;
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308 break;
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309
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310 case 50:
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311 c = ATTR_50;
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312 cs = EXTENDED_5250_COL_SEP;
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313 break;
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314
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315 case 51:
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316 c = ATTR_51;
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317 cs = EXTENDED_5250_COL_SEP;
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318 break;
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319
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320 case 52:
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321 c = ATTR_52;
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322 // colSep = true;
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323 ul = EXTENDED_5250_UNDERLINE;
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324 break;
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325
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326 case 53:
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327 c = ATTR_53;
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328 // colSep = true;
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329 ul = EXTENDED_5250_UNDERLINE;
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330 break;
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331
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332 case 54:
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333 c = ATTR_54;
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334 // colSep = true;
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335 ul = EXTENDED_5250_UNDERLINE;
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336 break;
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337
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338 case 55:
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339 nd = EXTENDED_5250_NON_DSP;
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340 break;
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341
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342 case 56: // pink
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343 c = ATTR_56;
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344 break;
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345
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346 case 57: // pink/reverse
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347 c = ATTR_57;
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348 break;
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349
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350 case 58: // blue/reverse
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351 c = ATTR_58;
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352 break;
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353
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354 case 59: // blue
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355 c = ATTR_59;
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356 break;
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357
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358 case 60: // pink/underline
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359 c = ATTR_60;
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360 ul = EXTENDED_5250_UNDERLINE;
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361 break;
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362
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363 case 61: // pink/reverse/underline
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364 c = ATTR_61;
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365 ul = EXTENDED_5250_UNDERLINE;
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366 break;
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367
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368 case 62: // blue/underline
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369 c = ATTR_62;
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370 ul = EXTENDED_5250_UNDERLINE;
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371 break;
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372
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373 case 63: // nondisplay
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374 nd = EXTENDED_5250_NON_DSP;
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375 cs = EXTENDED_5250_COL_SEP;
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376 break;
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377 default:
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378 c = ( COLOR_BG_BLACK << 8 & 0xff00) |
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379 ( COLOR_FG_YELLOW & 0xff);
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380 break;
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381
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382 }
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383
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384 screenColor[pos] = c;
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385 screenExtended[pos] = (char)(ul | cs | nd);
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386 }
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387
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388 protected void initalizePlanes () {
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389
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390 char c = (COLOR_BG_BLACK << 8 & 0xff00) |
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391 (COLOR_FG_GREEN & 0xff);
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392
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393 for (int y = 0;y < screenSize; y++) {
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394
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395 screenAttr[y] = initAttr;
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396 screenColor[y] = c;
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397
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398 }
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399
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400 // here we will just copy the initialized plane onto the other planes
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401 // using arraycopy which will be faster. I hope.
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402
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403 System.arraycopy(initArray,0,screen,0,screenSize);
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404 System.arraycopy(initArray,0,screenGUI,0,screenSize);
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405 System.arraycopy(initArray,0,screenIsAttr,0,screenSize);
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406 System.arraycopy(initArray,0,screenExtended,0,screenSize);
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407 System.arraycopy(initArray,0,fieldExtended,0,screenSize);
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408 System.arraycopy(initArray,0,screenField,0,screenSize);
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409 }
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410
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411 protected void initalizeFieldPlanes () {
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412 System.arraycopy(initArray,0,fieldExtended,0,screenSize);
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413 System.arraycopy(initArray,0,screenField,0,screenSize);
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414 }
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415
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416 protected final int getWhichGUI(int pos) {
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417
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418 return screenGUI[pos];
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419 }
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420
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421 protected final boolean isChanged(int pos) {
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422 return screenIsChanged[pos] == 0 ? false : true;
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423 }
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424
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425 protected final boolean isUseGui(int pos) {
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426 return screenGUI[pos] == NO_GUI ? false : true;
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427 }
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428
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429 /**
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430 * Return the data associated with the plane that is passed.
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431 *
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432 * @param from Position from which to start
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433 * @param to Position to end
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434 * @param plane From which plane to obtain the data
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435 * @return Character array containing the data requested
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436 */
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437 protected synchronized char[] getPlaneData(int from, int to, int plane) {
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438
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439 int len = (to - from);
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440
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441 char[] planeChars = new char[len + 1];
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442
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443 switch (plane) {
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444 case PLANE_TEXT:
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445 System.arraycopy(screen, from, planeChars, 0, len);
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446 break;
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447 case PLANE_ATTR:
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448 System.arraycopy(screenAttr, from, planeChars, 0, len);
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449 break;
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450 case PLANE_COLOR:
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451 System.arraycopy(screenColor, from, planeChars, 0, len);
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452 break;
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453 case PLANE_EXTENDED:
|
|
|
454 System.arraycopy(screenExtended, from, planeChars, 0, len);
|
|
|
455 break;
|
|
|
456 case PLANE_EXTENDED_GRAPHIC:
|
|
|
457 System.arraycopy(screenGUI, from, planeChars, 0, len);
|
|
|
458 break;
|
|
|
459 case PLANE_FIELD:
|
|
|
460 System.arraycopy(screenField, from, planeChars, 0, len);
|
|
|
461 break;
|
|
|
462 case PLANE_IS_ATTR_PLACE:
|
|
|
463 System.arraycopy(screenIsAttr, from, planeChars, 0, len);
|
|
|
464 break;
|
|
|
465 default:
|
|
|
466 System.arraycopy(screen, from, planeChars, 0, len);
|
|
|
467
|
|
|
468 }
|
|
|
469 return planeChars;
|
|
|
470
|
|
|
471 }
|
|
|
472
|
|
|
473 /**
|
|
|
474 * Converts a linear presentation space position to its corresponding row.
|
|
|
475 *
|
|
|
476 * @param pos The position to be converted
|
|
|
477 * @return The row which corresponds to the position given
|
|
|
478 * @throws OhioException
|
|
|
479 */
|
|
|
480 private int convertPosToRow(int pos) {
|
|
|
481
|
|
|
482 return (pos / numCols) + 1;
|
|
|
483
|
|
|
484 }
|
|
|
485
|
|
|
486 /**
|
|
|
487 * Converts a linear presentation space position to its corresponding column.
|
|
|
488 *
|
|
|
489 * @param pos The position to be converted
|
|
|
490 * @return The column which corresponds to the position given
|
|
|
491 * @throws OhioException
|
|
|
492 */
|
|
|
493 private int convertPosToColumn(int pos) {
|
|
|
494
|
|
|
495 return (pos % numCols) + 1;
|
|
|
496
|
|
|
497 }
|
|
|
498
|
|
|
499 /**
|
|
|
500 *
|
|
|
501 * Converts a row and column coordinate to its corresponding linear position.
|
|
|
502 *
|
|
|
503 * @param row - The row of the coordinate
|
|
|
504 * @param col - The column of the coordinate
|
|
|
505 * @return The linear position which corresponds to the coordinate given.
|
|
|
506 * @throws OhioException
|
|
|
507 */
|
|
|
508 private int convertRowColToPos(int row, int col) {
|
|
|
509
|
|
|
510
|
|
|
511 return (row - 1) * numCols + col -1;
|
|
|
512
|
|
|
513 }
|
|
|
514
|
|
|
515
|
|
|
516 /**
|
|
|
517 * <p>
|
|
|
518 * GetScreen retrieves the various planes associated with the presentation
|
|
|
519 * space. The data is returned as a linear array of character values in the
|
|
|
520 * array provided. The array is not terminated by a null character except
|
|
|
521 * when data is retrieved from the text plane, in which case a single null
|
|
|
522 * character is appended.
|
|
|
523 * </p>
|
|
|
524 * <p>
|
|
|
525 * The application must supply a buffer for the returned data and the length
|
|
|
526 * of the buffer. Data is returned starting from the beginning of the
|
|
|
527 * presentation space and continuing until the buffer is full or the entire
|
|
|
528 * plane has been copied. For text plane data, the buffer must include one
|
|
|
529 * extra position for the terminating null character.
|
|
|
530 * <p>
|
|
|
531 *
|
|
|
532 * @param buffer
|
|
|
533 * @param bufferLength
|
|
|
534 * @param plane
|
|
|
535 * @return The number of characters copied to the buffer
|
|
|
536 * @throws OhioException
|
|
|
537 */
|
|
|
538 public synchronized int GetScreen(char buffer[], int bufferLength, int plane) {
|
|
|
539
|
|
|
540 return GetScreen(buffer,bufferLength,0,screenSize,plane);
|
|
|
541
|
|
|
542 }
|
|
|
543
|
|
|
544 /**
|
|
|
545 * <p>
|
|
|
546 * GetScreen retrieves the various planes associated with the presentation
|
|
|
547 * space. The data is returned as a linear array of character values in the
|
|
|
548 * array provided. The array is not terminated by a null character except
|
|
|
549 * when data is retrieved from the text plane, in which case a single null
|
|
|
550 * character is appended.
|
|
|
551 * </p>
|
|
|
552 * <p>
|
|
|
553 * The application must supply a buffer for the returned data and the length
|
|
|
554 * of the buffer. Data is returned starting from the given position and
|
|
|
555 * continuing until the specified number of characters have been copied, the
|
|
|
556 * buffer is full or the entire plane has been copied. For text plane data,
|
|
|
557 * the buffer must include one extra position for the terminating null character.
|
|
|
558 * </p>
|
|
|
559 *
|
|
|
560 * @param buffer
|
|
|
561 * @param bufferLength
|
|
|
562 * @param from
|
|
|
563 * @param length
|
|
|
564 * @param plane
|
|
|
565 * @return The number of characters copied to the buffer
|
|
|
566 * @throws OhioException
|
|
|
567 */
|
|
|
568 public synchronized int GetScreen(char buffer[], int bufferLength, int from,
|
|
|
569 int length, int plane)
|
|
|
570 {
|
|
|
571 // if(buffer == null)
|
|
|
572 // throw new OhioException(sessionVT.getSessionConfiguration(),
|
|
|
573 // OhioScreen.class.getName(), "osohio.screen.ohio00300", 1);
|
|
|
574 if(buffer == null)
|
|
|
575 return 0;
|
|
|
576
|
|
|
577 int min = Math.min(Math.min(buffer.length, bufferLength), screenSize);
|
|
|
578 if ((from + min) > screenSize) {
|
|
|
579 min = screenSize - from;
|
|
|
580 }
|
|
|
581
|
|
|
582 char[] pd = getPlaneData(from,from + min,plane);
|
|
|
583 if(pd != null) {
|
|
|
584 System.arraycopy(pd, 0, buffer, 0, min);
|
|
|
585 return pd.length;
|
|
|
586 }
|
|
|
587
|
|
|
588 return 0;
|
|
|
589 }
|
|
|
590
|
|
|
591 /**
|
|
|
592 * <p>
|
|
|
593 * GetScreen retrieves the various planes associated with the presentation
|
|
|
594 * space. The data is returned as a linear array of character values in the
|
|
|
595 * array provided. The array is not terminated by a null character except
|
|
|
596 * when data is retrieved from the text plane, in which case a single null
|
|
|
597 * character is appended.
|
|
|
598 * </p>
|
|
|
599 * <p>
|
|
|
600 * The application must supply a buffer for the returned data and the length
|
|
|
601 * of the buffer. Data is returned starting from the given coordinates and
|
|
|
602 * continuing until the specified number of characters have been copied,
|
|
|
603 * the buffer is full, or the entire plane has been copied. For text plane
|
|
|
604 * data, the buffer must include one extra position for the terminating null
|
|
|
605 * character.
|
|
|
606 * </p>
|
|
|
607 *
|
|
|
608 * @param buffer
|
|
|
609 * @param bufferLength
|
|
|
610 * @param row
|
|
|
611 * @param col
|
|
|
612 * @param length
|
|
|
613 * @param plane
|
|
|
614 * @return The number of characters copied to the buffer.
|
|
|
615 * @throws OhioException
|
|
|
616 */
|
|
|
617 public synchronized int GetScreen(char buffer[], int bufferLength, int row,
|
|
|
618 int col, int length, int plane)
|
|
|
619 // throws OhioException {
|
|
|
620 {
|
|
|
621 // Call GetScreen function after converting row and column to
|
|
|
622 // a position.
|
|
|
623 return GetScreen(buffer,bufferLength, convertRowColToPos(row,col),
|
|
|
624 length, plane);
|
|
|
625 }
|
|
|
626
|
|
|
627 /**
|
|
|
628 * <p>
|
|
|
629 * GetScreenRect retrieves data from the various planes associated with the
|
|
|
630 * presentation space. The data is returned as a linear array of character
|
|
|
631 * values in the buffer provided.
|
|
|
632 * </p>
|
|
|
633 *
|
|
|
634 * <p>
|
|
|
635 * The application supplies two positions that represent opposing corners of
|
|
|
636 * a rectangle within the presentation space. The starting and ending
|
|
|
637 * positions can have any spatial relationship to each other. The data
|
|
|
638 * returned starts from the row containing the upper-most point to the row
|
|
|
639 * containing the lower-most point, and from the left-most column to the
|
|
|
640 * right-most column.
|
|
|
641 * </p>
|
|
|
642 * <p>
|
|
|
643 * The specified buffer must be at least large enough to contain the number
|
|
|
644 * of characters in the rectangle. If the buffer is too small, no data is
|
|
|
645 * copied and zero is returned by the method. Otherwise, the method returns
|
|
|
646 * the number of characters copied.
|
|
|
647 * </p>
|
|
|
648 *
|
|
|
649 * @param buffer
|
|
|
650 * @param bufferLength
|
|
|
651 * @param startPos
|
|
|
652 * @param endPos
|
|
|
653 * @param plane
|
|
|
654 * @return The number of characters copied to the buffer
|
|
|
655 * @throws OhioException
|
|
|
656 */
|
|
|
657 protected int GetScreenRect(char buffer[], int bufferLength,
|
|
|
658 int startPos, int endPos, int plane)
|
|
|
659 // throws OhioException {
|
|
|
660 {
|
|
|
661 // We will use the row,col routine here because it is easier to use
|
|
|
662 // row colum than it is for position since I wrote the other first and
|
|
|
663 // am to lazy to implement it here
|
|
|
664 // Maybe it would be faster to do it the other way?
|
|
|
665 int startRow = convertPosToRow(startPos);
|
|
|
666 int startCol = convertPosToColumn(startPos);
|
|
|
667 int endRow = convertPosToRow(endPos);
|
|
|
668 int endCol = convertPosToColumn(endPos);
|
|
|
669 return GetScreenRect(buffer, bufferLength, startRow, startCol,
|
|
|
670 endRow, endCol, plane);
|
|
|
671
|
|
|
672 }
|
|
|
673
|
|
|
674 /**
|
|
|
675 * <p>
|
|
|
676 * GetScreenRect retrieves data from the various planes associated with the
|
|
|
677 * presentation space. The data is returned as a linear array of character
|
|
|
678 * values in the buffer provided. The buffer is not terminated by a null
|
|
|
679 * character.
|
|
|
680 * </p>
|
|
|
681 * <p>
|
|
|
682 * The application supplies two coordinates that represent opposing corners
|
|
|
683 * of a rectangle within the presentation space. The starting and ending
|
|
|
684 * coordinates can have any spatial relationship to each other. The data
|
|
|
685 * returned starts from the row containing the upper-most point to the row
|
|
|
686 * containing the lower-most point, and from the left-most column to the
|
|
|
687 * right-most column.
|
|
|
688 * </p>
|
|
|
689 * <p>
|
|
|
690 * The specified buffer must be at least large enough to contain the number
|
|
|
691 * of characters in the rectangle. If the buffer is too small, no data is
|
|
|
692 * copied and zero is returned by the method. Otherwise, the method returns
|
|
|
693 * the number of characters copied.
|
|
|
694 * </p>
|
|
|
695 *
|
|
|
696 * @param buffer
|
|
|
697 * @param bufferLength
|
|
|
698 * @param startRow
|
|
|
699 * @param startCol
|
|
|
700 * @param endRow
|
|
|
701 * @param endCol
|
|
|
702 * @param plane
|
|
|
703 * @return The number characters copied to the buffer
|
|
|
704 * @throws OhioException
|
|
|
705 */
|
|
|
706 protected int GetScreenRect(char buffer[], int bufferLength,
|
|
|
707 int startRow, int startCol,
|
|
|
708 int endRow, int endCol, int plane)
|
|
|
709 // throws OhioException {
|
|
|
710 {
|
|
|
711 // number of bytes obtained
|
|
|
712 int numBytes = 0;
|
|
|
713
|
|
|
714 // lets check the row range. If they are reversed then we need to
|
|
|
715 // place them in the correct order.
|
|
|
716 if(startRow > endRow) {
|
|
|
717 int r = startRow;
|
|
|
718 startRow = endRow;
|
|
|
719 endRow = r;
|
|
|
720 }
|
|
|
721 // lets check the column range. If they are reversed then we need to
|
|
|
722 // place them in the correct order.
|
|
|
723 if(startCol > endCol) {
|
|
|
724 int c = startCol;
|
|
|
725 startCol = endCol;
|
|
|
726 endCol = c;
|
|
|
727 }
|
|
|
728 int numCols = (endCol - startCol) + 1;
|
|
|
729 int numRows = (endRow - startRow) + 1;
|
|
|
730
|
|
|
731 // lets make sure it is within the bounds of the character array passed
|
|
|
732 // if not the return as zero bytes where read as per documentation.
|
|
|
733 if(numCols * numRows <= bufferLength) {
|
|
|
734
|
|
|
735 // make sure it is one larger. I guess for other languanges to
|
|
|
736 // reference like in C which is terminated by a zero byte at the end
|
|
|
737 // of strings.
|
|
|
738 char cb[] = new char[numCols + 1];
|
|
|
739 int charOffset = 0;
|
|
|
740 int bytes = 0;
|
|
|
741
|
|
|
742 // now let's loop through and get the screen information for
|
|
|
743 // each row;
|
|
|
744 for(int row = startRow; row <= endRow;) {
|
|
|
745 if((bytes = GetScreen(cb, cb.length, row, startCol, numCols, plane)) != 0) {
|
|
|
746 System.arraycopy(cb, 0, buffer, charOffset, numCols);
|
|
|
747 }
|
|
|
748 row++;
|
|
|
749 charOffset += numCols;
|
|
|
750 // make sure we count the number of bytes returned
|
|
|
751 numBytes += bytes;
|
|
|
752 }
|
|
|
753
|
|
|
754 }
|
|
|
755
|
|
|
756 return numBytes;
|
|
|
757 }
|
|
|
758
|
|
|
759 private int isOption(char[] screen,
|
|
|
760 int x,
|
|
|
761 int lenScreen,
|
|
|
762 int numPref,
|
|
|
763 int numSuff,
|
|
|
764 char suff) {
|
|
|
765 boolean hs =true;
|
|
|
766 int sp = x;
|
|
|
767 int os = 0;
|
|
|
768 // check to the left for option
|
|
|
769 while (--sp >=0 && screen[sp] <= ' ' ) {
|
|
|
770
|
|
|
771 if (x - sp > numPref || screen[sp] == suff||
|
|
|
772 screen[sp] == '.' ||
|
|
|
773 screen[sp] == '*') {
|
|
|
774 hs =false;
|
|
|
775 break;
|
|
|
776 }
|
|
|
777 }
|
|
|
778
|
|
|
779 // now lets check for how long the option is it has to be numPref or less
|
|
|
780 os = sp;
|
|
|
781 while (hs && --os > 0 && screen[os] > ' ' ) {
|
|
|
782
|
|
|
783 if (sp - os >= numPref || screen[os] == suff ||
|
|
|
784 screen[os] == '.' ||
|
|
|
785 screen[os] == '*') {
|
|
|
786 hs = false;
|
|
|
787 break;
|
|
|
788 }
|
|
|
789 }
|
|
|
790 if (sp - os > 1 && !Character.isDigit(screen[os+1])) {
|
|
|
791 hs = false;
|
|
|
792 }
|
|
|
793
|
|
|
794 sp = x;
|
|
|
795
|
|
|
796 if (Character.isDigit(screen[sp+1]))
|
|
|
797 hs = false;
|
|
|
798 // now lets make sure there are no more than numSuff spaces after option
|
|
|
799 while (hs && (++sp < lenScreen && screen[sp] <= ' '
|
|
|
800 || screen[sp] == suff )) {
|
|
|
801 if (sp - x >= numSuff || screen[sp] == suff ||
|
|
|
802 screen[sp] == '.' ||
|
|
|
803 screen[sp] == '*') {
|
|
|
804 hs =false;
|
|
|
805 break;
|
|
|
806 }
|
|
|
807 }
|
|
|
808 if (hs && !Character.isLetterOrDigit(screen[sp]))
|
|
|
809 hs = false;
|
|
|
810 if (hs) {
|
|
|
811 return os;
|
|
|
812 }
|
|
|
813 return -1;
|
|
|
814 }
|
|
|
815
|
|
|
816 } |
