Mercurial > baum

annotate baum.c @ 8:495a56e706dc

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input is now read from stdin
author meillo@marmaro.de
date Sat, 09 Feb 2008 12:42:11 +0100
parents 6a6152cf63f7
children c020b0d1cfca
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1 /*
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2 * baum - an esoteric programming language
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3 *
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4 * (c) markus schnalke <meillo@marmaro.de>
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5 * and julian forster
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6 *
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7 */
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8
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9
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10 #include <stdio.h>
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11 #include <stdlib.h>
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12 #include <string.h>
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13
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14 #include "baum.h"
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15 #include "actions.h"
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18 struct Node* root = 0;
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19
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20
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21 void logit(char* text) {
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22 fprintf(stderr, "[%s]\n", text);
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23 }
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24
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25
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26 /* new */
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27 struct Node* newNode(char* name, unsigned char value) {
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28 struct Node* node;
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29 node = (struct Node*) malloc(sizeof(struct Node));
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30 node->name = name;
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31 node->value = value;
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32 node->right = 0;
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33 node->down = 0;
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34 return node;
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35 }
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36
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37
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38 void setValue(struct Node* node, unsigned char value) {
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39 node->value = value;
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40 }
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41
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42
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43 struct Node* nextNode(struct Node* node) {
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44 return node->right;
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45 }
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46
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47 struct Node* lastNode(struct Node* node) {
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48 while (node->right != NULL) {
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49 node = node->right;
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50 }
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51 return node;
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52 }
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53
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54 void insertLast(struct Node* node, struct Node* insert) {
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55 node = lastNode(node);
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56 node->right = insert;
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57 }
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58
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59 /* delete */
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60 void delete(struct Node* node) {
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61 if (node != NULL) {
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62 if (node->down != NULL) {
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63 delete(node->down);
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64 }
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65 if (node->right != NULL) {
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66 delete(node->right);
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67 }
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68 free(node); node=0;
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69 }
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70 }
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72
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73 /* print */
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74 void printNode(struct Node* node) {
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75 if (node != NULL) {
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76 fprintf(stderr, "Node: %20s (%d|%c)\n", node->name, node->value, node->value);
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77 }
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78 }
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79
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80 void printTree(struct Node* root) {
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81 if (root != NULL) {
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82 printNode(root);
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83 fprintf(stderr, " down: ");
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84 if (root->down != NULL) {
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85 printTree(root->down);
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86 } else {
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87 fprintf(stderr, "NULL\n");
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88 }
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89 fprintf(stderr, " right: ");
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90 if (root->right != NULL) {
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91 printTree(root->right);
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92 } else {
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93 fprintf(stderr, "NULL\n");
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94 }
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95 }
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96 }
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100 /* traverse */
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101 void traverse(struct Node* root) {
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102 /* each node controlls the nodes below itself */
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103 action(root);
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104 }
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105
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106 /* init */
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107 void init() {
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108 /* add some numbers
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109 root = newNode("print", 'n');
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110 root->down = newNode("sum", 0);
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111
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112 root->down->down = newNode("number", 60);
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113
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114 root->down->down->right = newNode("number", 50);
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115
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116 root->down->down->right->right = newNode("sum", 0);
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117 root->down->down->right->right->down = newNode("number", 1);
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118 root->down->down->right->right->down->right = newNode("number", 5);
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119 */
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120
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121 /* input numbers and add them
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122 root = newNode("print", 'n');
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123 root->down = newNode("sum", 0);
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124 root->down->down = newNode("input", 0);
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125 root->down->down->right = newNode("input", 0);
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126 root->down->down->right->right = newNode("input", 0);
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127 */
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128
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129 /* prints HelloWorld
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130 */
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131 struct Node* np = 0;
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132
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133 root = newNode("blackhole", 0);
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134 root->down = newNode("sum", 0);
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135 root->down->down = newNode("print", 'c');
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136 np = root->down->down;
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137 np->down = newNode("number", 'H');
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138
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139 np->right = newNode("print", 'c');
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140 np->right->down = newNode("number", 'e');
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141 np = np->right;
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142
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143 np->right = newNode("print", 'c');
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144 np->right->down = newNode("number", 'l');
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145 np = np->right;
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146
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147 np->right = newNode("print", 'c');
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148 np->right->down = newNode("number", 'l');
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149 np = np->right;
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150
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151 np->right = newNode("print", 'c');
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152 np->right->down = newNode("number", 'o');
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153 np = np->right;
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154
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155 np->right = newNode("print", 'c');
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156 np->right->down = newNode("number", ' ');
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157 np = np->right;
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158
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159 np->right = newNode("print", 'c');
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160 np->right->down = newNode("number", 'L');
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161 np = np->right;
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162
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163 np->right = newNode("print", 'c');
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164 np->right->down = newNode("number", 'y');
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165 np = np->right;
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166
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167 np->right = newNode("print", 'c');
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168 np->right->down = newNode("number", 'd');
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169 np = np->right;
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170
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171 np->right = newNode("print", 'c');
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172 np->right->down = newNode("number", 'i');
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173 np = np->right;
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174
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175 np->right = newNode("print", 'c');
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176 np->right->down = newNode("number", 10);
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177 np = np->right;
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178
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179
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180 }
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181
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182
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183 /* read input */
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184 void read_input() {
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185 int c;
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186 int indent;
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187 char name[256];
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188 int value;
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189
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190 indent = 0;
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191 strcpy(name, "");
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192 value = 0;
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193
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194 while ((c = getchar()) != EOF) {
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195 if (c == '#') { /* comment */
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196 while ((c = getchar()) != '\n') {
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197 }
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198 }
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199
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200 if (c == ' ' || c == '\t') { /* indent if at start of line */
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201 if (strlen(name) == 0) {
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202 indent++;
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203 }
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204 }
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205
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206 if (c == '\n') { /* end of line: create node */
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207 if (strlen(name) > 0) {
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208 printf(" %d - %s - %d\n", indent, name, value);
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209 /* create node */
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210 }
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211 indent = 0;
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212 strcpy(name, "");
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213 value = 0;
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214 }
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215
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216 if (c >= 'a' && c <= 'z') { /* name */
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217 int i = 1;
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218 name[0] = (char) c;
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219 while ((c = getchar()) != '(') {
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220 name[i] = (char) c;
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221 i++;
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222 if (i > 255) {
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223 break;
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224 }
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225 }
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226 name[i] = '\0';
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227 }
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228
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229 if (c == '(') { /* value */
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230 scanf("%d)", &value);
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231 }
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232
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233 }
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234
6
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235 }
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236
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237 /* main */
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238 int main(int argc, char* argv[]) {
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239 unsigned char shell_return = 0;
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240 /*
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241 init();
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242
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243 printTree(root);
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244 fprintf(stderr, "\n\n");
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245
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246 shell_return = action(root);
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247
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248 fprintf(stderr, "\n\n");
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249 printTree(root);
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250
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251 delete(root);
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252 */
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253
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254 read_input();
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255 exit(shell_return);
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256 }