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annotate actions.c @ 48:f9fc4c4f9e3d 0.3

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documented nodes in man page
author meillo@marmaro.de
date Sun, 02 Mar 2008 11:04:52 +0100
parents c31b5bb6d493
children 0870e261bf28
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1 #include <stdio.h>
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2 #include <stdlib.h>
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3 #include <string.h>
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4 #include "baum.h"
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5
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6 unsigned char action_print(struct Node* node);
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7 unsigned char action_sum(struct Node* node);
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8 unsigned char action_number(struct Node* node);
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9 unsigned char action_input(struct Node* node);
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10 unsigned char action_times(struct Node* node);
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14 unsigned char action(struct Node* node) {
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15 if (node == NULL) {
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16 if (option_verbose) {
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17 fprintf(stderr, "warning: action of non existing node\n");
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18 }
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19 return 0;
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20 }
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22 if (strcmp(node->name, "print") == 0) {
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23 return action_print(node);
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25 } else if (strcmp(node->name, "sum") == 0) {
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26 return action_sum(node);
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28 } else if (strcmp(node->name, "number") == 0) {
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29 return action_number(node);
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31 } else if (strcmp(node->name, "input") == 0) {
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32 return action_input(node);
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34 } else if (strcmp(node->name, "times") == 0) {
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35 return action_times(node);
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37 } else {
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38 fprintf(stderr, "unknown kind of node\n");
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39 exit(4);
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40 }
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41 }
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45 unsigned char action_print(struct Node* node) {
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46 unsigned char result;
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47 result = action(node->down);
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48 if (node->value == 'c') {
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49 printf("%c", result);
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50 } else {
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51 printf("%d", result);
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52 }
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53 return result;
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54 }
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57 unsigned char action_sum(struct Node* node) {
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58 struct Node* tp;
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59 tp = node->down;
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60 while (tp != NULL) {
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61 node->value += action(tp);
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62 tp = tp->right;
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63 }
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64 return node->value;
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65 }
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68 unsigned char action_number(struct Node* node) {
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69 if (node->down != NULL) {
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70 action(node->down);
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71 }
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72 return node->value;
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73 }
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76 unsigned char action_input(struct Node* node) {
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77 int input;
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78 printf("input: ");
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79 scanf("%d", &input);
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80 input = input % 256;
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81 insertLast(node, newNode("number", (char) input));
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82 return 0;
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83 }
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86 unsigned char action_times(struct Node* node) {
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87 unsigned char i;
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88 for (i = 0; i < node->value; i++) {
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89 insertLast(node, copyTree(node->down));
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90 }
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91 return 0;
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92 }