1 | package org.expeditee.simple;
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2 |
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3 | import java.io.BufferedReader;
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4 | import java.io.BufferedWriter;
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5 | import java.io.File;
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6 | import java.io.FileReader;
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7 | import java.io.FileWriter;
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8 |
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9 | import org.expeditee.gui.Frame;
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10 | import org.expeditee.gui.FrameGraphics;
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11 | import org.expeditee.gui.FrameIO;
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12 | import org.expeditee.items.Text;
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13 |
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14 | public class Context {
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15 | private Primitives primitives_ = new Primitives();
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16 |
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17 | private Pointers pointers_ = new Pointers();
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18 |
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19 | public Primitives getPrimitives() {
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20 | return primitives_;
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21 | }
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22 |
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23 | public Pointers getPointers() {
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24 | return pointers_;
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25 | }
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26 |
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27 | public Context() {
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28 | }
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29 |
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30 | public int size() {
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31 | return primitives_.size() + pointers_.size();
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32 | }
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33 |
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34 | public void clear() {
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35 | primitives_.clear();
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36 | pointers_.clear();
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37 | }
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38 |
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39 | public void display() {
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40 | if (size() == 0) {
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41 | FrameGraphics.ErrorMessage("No variables exist!");
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42 | return;
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43 | }
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44 |
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45 | primitives_.display();
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46 | pointers_.display();
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47 | }
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48 |
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49 | /**
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50 | *
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51 | * @param var1
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52 | * @param var2
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53 | * @return
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54 | * @throws Exception
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55 | * if the variables could not be converted to the same type.
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56 | */
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57 | public boolean equalValues(String var1, String var2) throws Exception {
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58 | if (Primitives.isPrimitive(var1) && Primitives.isPrimitive(var2)) {
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59 | return primitives_.equalValues(var1, var2);
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60 | } else if (Pointers.isPointer(var1) && Pointers.isPointer(var2)) {
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61 | throw new UnsupportedOperationException(
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62 | "Pointer comparison not yet implemented");
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63 | }
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64 | return false;
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65 | }
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66 |
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67 | public void readFrame(String frameNameVar, String frameVar,
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68 | String successVar) throws Exception {
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69 | // Get the values to be set
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70 | String frameName = primitives_.getStringValue(frameNameVar);
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71 | Frame currentFrame = FrameIO.LoadFrame(frameName);
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72 |
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73 | pointers_.setObject(frameVar, currentFrame);
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74 |
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75 | if (successVar != null) {
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76 | Boolean success = currentFrame != null;
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77 | primitives_.setValue(successVar, new SBoolean(success));
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78 | }
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79 | }
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80 |
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81 | public void createFrame(String framesetNameVar, String frameVar,
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82 | String successVar) throws Exception {
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83 | // Get the values to be set
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84 | String framesetName = primitives_.getStringValue(framesetNameVar);
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85 | Frame currentFrame = FrameIO.CreateFrame(framesetName, "", null);
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86 | pointers_.setObject(frameVar, currentFrame);
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87 |
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88 | if (successVar != null) {
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89 | Boolean success = currentFrame != null;
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90 | primitives_.setValue(successVar, new SBoolean(success));
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91 | }
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92 | }
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93 |
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94 | public void closeFrame(String frameVar, String successVar) throws Exception {
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95 | // Get the values to be set
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96 | Frame frame = (Frame) pointers_.getVariable(frameVar).getValue();
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97 | frame.change();
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98 | String contents = FrameIO.SaveFrame(frame, false);
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99 |
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100 | if (successVar != null) {
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101 | Boolean success = contents != null;
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102 | primitives_.setValue(successVar, new SBoolean(success));
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103 | }
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104 | }
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105 |
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106 | public void closeWriteFile(String fileVar) throws Exception {
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107 | BufferedWriter bw = (BufferedWriter) pointers_.getVariable(fileVar)
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108 | .getValue();
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109 | bw.close();
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110 | }
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111 |
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112 | public void closeReadFile(String fileVar) throws Exception {
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113 | BufferedReader br = (BufferedReader) pointers_.getVariable(fileVar)
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114 | .getValue();
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115 | br.close();
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116 | }
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117 |
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118 | public void writeFile(String fileVar, String text) throws Exception {
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119 | BufferedWriter bw = (BufferedWriter) pointers_.getVariable(fileVar)
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120 | .getValue();
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121 | bw.write(text);
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122 | }
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123 |
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124 | public void openWriteFile(String fileNameVar, String fileVar)
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125 | throws Exception {
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126 | openWriteFile(fileNameVar, fileVar, null);
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127 | }
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128 |
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129 | public void openWriteFile(String fileNameVar, String fileVar,
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130 | String successVar) throws Exception {
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131 | // Get the values to be set
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132 | File filePath = new File(primitives_.getStringValue(fileNameVar));
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133 | BufferedWriter currentFile = new BufferedWriter(
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134 | new FileWriter(filePath));
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135 |
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136 | pointers_.setObject(fileVar, currentFile);
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137 |
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138 | if (successVar != null) {
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139 | Boolean success = currentFile != null;
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140 | primitives_.setValue(successVar, new SBoolean(success));
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141 | }
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142 | }
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143 |
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144 | public void readLineFile(String fileVar, String textVar) throws Exception {
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145 | readLineFile(fileVar, fileVar, null);
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146 | }
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147 |
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148 | public void readLineFile(String fileVar, String textVar, String successVar)
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149 | throws Exception {
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150 |
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151 | BufferedReader br = (BufferedReader) pointers_.getVariable(fileVar)
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152 | .getValue();
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153 |
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154 | String text = br.readLine();
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155 | boolean success = text != null;
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156 | primitives_.setValue(textVar, text);
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157 |
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158 | if (successVar != null) {
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159 | primitives_.setValue(successVar, new SBoolean(success));
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160 | }
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161 | }
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162 |
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163 | public void readItemFile(String fileVar, String itemVar) throws Exception {
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164 | readItemFile(fileVar, fileVar, null);
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165 | }
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166 |
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167 | public void readItemFile(String fileVar, String itemVar, String successVar)
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168 | throws Exception {
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169 |
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170 | BufferedReader br = (BufferedReader) pointers_.getVariable(fileVar)
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171 | .getValue();
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172 | boolean success = true;
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173 | try {
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174 | Text item = (Text) pointers_.getVariable(itemVar).getValue();
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175 | String nextLine = br.readLine();
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176 | String text = nextLine;
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177 | success = (text != null);
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178 | while ((nextLine = br.readLine()) != null)
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179 | text += '\n' + nextLine;
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180 | item.setText(text);
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181 | } catch (Exception e) {
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182 | success = false;
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183 | }
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184 |
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185 | if (successVar != null) {
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186 | primitives_.setValue(successVar, new SBoolean(success));
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187 | }
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188 | }
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189 |
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190 | public void openReadFile(String fileNameVar, String fileVar)
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191 | throws Exception {
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192 | openReadFile(fileNameVar, fileVar, null);
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193 | }
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194 |
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195 | public void openReadFile(String fileNameVar, String fileVar,
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196 | String successVar) throws Exception {
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197 | // Get the values to be set
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198 | File filePath = new File(primitives_.getStringValue(fileNameVar));
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199 | Boolean success = true;
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200 | BufferedReader currentFile = null;
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201 | try {
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202 | currentFile = new BufferedReader(new FileReader(filePath));
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203 | } catch (Exception e) {
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204 | success = false;
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205 | }
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206 | pointers_.setObject(fileVar, currentFile);
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207 |
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208 | if (successVar != null) {
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209 | primitives_.setValue(successVar, new SBoolean(success));
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210 | }
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211 | }
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212 |
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213 | public boolean isDefined(String varName) {
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214 | try {
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215 | if (Primitives.isPrimitive(varName)) {
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216 | getPrimitives().getVariable(varName);
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217 | } else {
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218 | getPointers().getVariable(varName);
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219 | }
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220 | return true;
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221 | } catch (Exception e) {
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222 | return false;
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223 | }
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224 | }
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225 |
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226 | public void createFrameset(String framesetNameVar, String successVar)
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227 | throws IncorrectTypeException {
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228 | boolean success = true;
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229 | try {
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230 | // Get the values to be set
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231 | String framesetName = primitives_.getStringValue(framesetNameVar);
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232 | Frame firstFrame = FrameIO.CreateNewFrameset(framesetName);
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233 | success = firstFrame != null;
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234 | } catch (Exception e) {
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235 | success = false;
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236 | }
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237 | if (successVar != null) {
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238 | primitives_.setValue(successVar, new SBoolean(success));
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239 | }
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240 |
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241 | }
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242 | } |
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