Mercurial > baum
annotate baum.c @ 13:bf660b45bba9
added commandline options (-v, -c, file); logging only if -v is set
author | meillo@marmaro.de |
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date | Wed, 13 Feb 2008 09:13:02 +0100 |
parents | 8e34daa80f64 |
children | e2048e569891 |
rev | line source |
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0 | 1 /* |
2 * baum - an esoteric programming language | |
3 * | |
4 * (c) markus schnalke <meillo@marmaro.de> | |
5 * and julian forster | |
6 * | |
7 */ | |
8 | |
9 | |
10 #include <stdio.h> | |
11 #include <stdlib.h> | |
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12 #include <string.h> |
0 | 13 |
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14 #include "baum.h" |
2 | 15 #include "actions.h" |
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16 |
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17 #define VERSION "0.1" |
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18 |
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19 int option_check = 0; |
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20 int option_verbose = 0; |
0 | 21 |
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22 struct Node* root = 0; |
10 | 23 struct Stackitem* stack = NULL; |
0 | 24 |
25 | |
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26 void logit(char* text) { |
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27 if (option_verbose) { |
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28 fprintf(stderr, "[%s]\n", text); |
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29 } |
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30 } |
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31 |
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32 |
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33 /* new */ |
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34 struct Node* newNode(char* name, unsigned char value) { |
0 | 35 struct Node* node; |
36 node = (struct Node*) malloc(sizeof(struct Node)); | |
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37 strcpy(node->name, name); |
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38 node->value = value; |
0 | 39 node->right = 0; |
40 node->down = 0; | |
41 return node; | |
42 } | |
43 | |
44 | |
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45 void setValue(struct Node* node, unsigned char value) { |
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46 node->value = value; |
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47 } |
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48 |
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49 |
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50 struct Node* nextNode(struct Node* node) { |
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51 return node->right; |
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52 } |
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53 |
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54 struct Node* lastNode(struct Node* node) { |
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55 while (node->right != NULL) { |
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56 node = node->right; |
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57 } |
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58 return node; |
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59 } |
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60 |
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61 void insertLast(struct Node* node, struct Node* insert) { |
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62 node = lastNode(node); |
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63 node->right = insert; |
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64 } |
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65 |
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66 /* delete */ |
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67 void delete(struct Node* node) { |
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68 if (node != NULL) { |
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69 if (node->down != NULL) { |
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70 delete(node->down); |
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71 } |
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72 if (node->right != NULL) { |
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73 delete(node->right); |
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74 } |
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75 free(node); node=0; |
0 | 76 } |
77 } | |
78 | |
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79 |
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80 /* print */ |
0 | 81 void printNode(struct Node* node) { |
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82 if (node != NULL) { |
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83 fprintf(stderr, "Node: %10s (%d|%c)\n", node->name, node->value, node->value); |
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84 } |
0 | 85 } |
86 | |
87 void printTree(struct Node* root) { | |
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88 if (root != NULL) { |
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89 printNode(root); |
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90 fprintf(stderr, " down: "); |
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91 if (root->down != NULL) { |
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92 printTree(root->down); |
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93 } else { |
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94 fprintf(stderr, "NULL\n"); |
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95 } |
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96 fprintf(stderr, " right: "); |
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97 if (root->right != NULL) { |
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98 printTree(root->right); |
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99 } else { |
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100 fprintf(stderr, "NULL\n"); |
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101 } |
0 | 102 } |
103 } | |
104 | |
105 | |
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106 |
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107 /* traverse */ |
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108 void traverse(struct Node* root) { |
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109 /* each node controlls the nodes below itself */ |
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110 action(root); |
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111 } |
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112 |
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113 |
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114 |
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115 |
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116 void push(struct Node* node) { |
10 | 117 struct Stackitem* tmp; |
118 struct Stackitem* new; | |
119 new = (struct Stackitem*) malloc(sizeof(struct Stackitem)); | |
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120 new->node = node; |
10 | 121 tmp = stack; |
122 stack = new; | |
123 stack->next = tmp; | |
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124 } |
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125 struct Node* pull() { |
10 | 126 if (stack == NULL) { |
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127 return NULL; |
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128 } |
10 | 129 struct Stackitem* tmp; |
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130 struct Node* node; |
10 | 131 tmp = stack; |
132 stack = stack->next; | |
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133 node = tmp->node; |
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134 free(tmp); tmp=0; |
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135 return node; |
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136 } |
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137 |
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138 |
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139 |
6 | 140 /* read input */ |
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141 void read_input(char* filename) { |
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142 int c; |
8 | 143 int indent; |
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144 char name[256]; |
6 | 145 int value; |
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146 int last_indent; |
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147 struct Node* last_node; |
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148 struct Node* node; |
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149 FILE* file; |
6 | 150 |
8 | 151 indent = 0; |
152 strcpy(name, ""); | |
153 value = 0; | |
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154 last_indent = -1; |
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155 root = newNode("blackhole", 0); |
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156 last_node = root; |
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157 file = fopen(filename, "r"); |
6 | 158 |
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159 while ((c = getc(file)) != EOF) { |
8 | 160 if (c == '#') { /* comment */ |
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161 while ((c = getc(file)) != '\n') { |
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162 } |
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163 } |
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164 |
8 | 165 if (c == ' ' || c == '\t') { /* indent if at start of line */ |
166 if (strlen(name) == 0) { | |
167 indent++; | |
168 } | |
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169 } |
6 | 170 |
8 | 171 if (c == '\n') { /* end of line: create node */ |
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172 if (strlen(name) > 0) { |
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173 if (option_verbose) { |
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174 fprintf(stderr, " %d - %s - %d\n", indent, name, value); |
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175 } |
8 | 176 /* create node */ |
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177 node = newNode((char*) name, value); |
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178 if (indent > last_indent) { /* down */ |
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179 last_node->down = node; |
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180 push(last_node); |
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181 } else if (indent == last_indent) { /* right */ |
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182 last_node->right = node; |
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183 } else if (indent < last_indent) { /* up */ |
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184 /* FIXME what if it goes more than one level up? */ |
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185 last_node = pull(); |
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186 last_node->right = node; |
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187 } |
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188 last_indent = indent; |
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189 last_node = node; |
6 | 190 } |
191 indent = 0; | |
192 strcpy(name, ""); | |
193 value = 0; | |
194 } | |
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195 |
8 | 196 if (c >= 'a' && c <= 'z') { /* name */ |
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197 int i = 1; |
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198 name[0] = (char) c; |
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199 while ((c = getc(file)) != '(') { |
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200 name[i] = (char) c; |
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201 i++; |
8 | 202 if (i > 255) { |
203 break; | |
204 } | |
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205 } |
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206 name[i] = '\0'; |
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207 } |
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208 |
8 | 209 if (c == '(') { /* value */ |
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210 fscanf(file, "%d)", &value); |
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211 } |
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212 |
6 | 213 } |
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214 |
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215 fclose(file); |
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216 |
6 | 217 } |
218 | |
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219 /* main */ |
0 | 220 int main(int argc, char* argv[]) { |
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221 unsigned char shell_return = 0; |
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222 |
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223 while (--argc > 0 && (*++argv)[0] == '-') { |
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224 if (strcmp(argv[0], "--version") == 0) { |
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225 printf("baum %s\n\ |
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226 an esoteric programming language\n\ |
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227 by markus schnalke and julian forster\n\ |
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228 http://prog.marmaro.de/baum\n", VERSION); |
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229 exit(0); |
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230 } else if (strcmp(argv[0], "--help") == 0) { |
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231 printf("\ |
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232 baum --version print version information and exit\n\ |
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233 baum --help print this output\n\ |
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234 baum [-v] -c <file> (verbosly) check file and return 1 if invalid\n\ |
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235 baum [-v] <file> (verbosly) run file\n\ |
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236 "); |
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237 exit(0); |
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238 } else if (strcmp(argv[0], "-c") == 0) { |
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239 option_check = 1; |
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240 } else if (strcmp(argv[0], "-v") == 0) { |
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241 option_verbose = 1; |
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242 /* |
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243 } else if (strcmp(argv[0], "-W") == 0) { |
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244 / * TODO: catch if no value given * / |
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245 iDWarn = atoi((++argv)[0]); |
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246 argc--; |
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247 */ |
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248 } else { |
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249 fprintf(stderr, "unknown option: %s\n", argv[0]); |
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250 exit(127); |
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251 } |
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252 } |
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253 |
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254 if (argc != 1) { |
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255 fprintf(stderr, "%d source files given, please specify one.\n", argc); |
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256 exit(3); |
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257 } |
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258 |
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259 read_input(argv[0]); |
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260 |
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261 if (option_verbose) { |
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262 printTree(root); |
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263 } |
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264 |
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265 shell_return = action(root); |
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266 |
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267 if (option_verbose) { |
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268 printTree(root); |
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269 } |
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270 |
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271 delete(root); |
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272 exit(shell_return); |
0 | 273 } |