rev |
line source |
jbe@352
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1 #include <stdlib.h>
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jbe@352
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2 #include <stdio.h>
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jbe@352
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3 #include <string.h>
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jbe@352
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4 #include <libpq-fe.h>
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jbe@352
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5 #include <search.h>
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jbe@352
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6
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jbe@352
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7 static char *escapeLiteral(PGconn *conn, const char *str, size_t len) {
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jbe@352
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8 // provides compatibility for PostgreSQL versions prior 9.0
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jbe@352
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9 // in future: return PQescapeLiteral(conn, str, len);
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jbe@352
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10 char *res;
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jbe@352
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11 size_t res_len;
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jbe@352
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12 res = malloc(2*len+3);
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jbe@358
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13 if (!res) return NULL;
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jbe@352
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14 res[0] = '\'';
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jbe@352
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15 res_len = PQescapeStringConn(conn, res+1, str, len, NULL);
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jbe@352
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16 res[res_len+1] = '\'';
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jbe@352
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17 res[res_len+2] = 0;
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jbe@352
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18 return res;
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jbe@352
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19 }
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jbe@352
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20
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jbe@352
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21 static void freemem(void *ptr) {
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jbe@352
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22 // to be used for "escapeLiteral" function
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jbe@352
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23 // provides compatibility for PostgreSQL versions prior 9.0
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jbe@352
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24 // in future: PQfreemem(ptr);
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jbe@352
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25 free(ptr);
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jbe@352
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26 }
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jbe@352
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27
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jbe@352
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28 #define COL_MEMBER_ID 0
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jbe@352
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29 #define COL_WEIGHT 1
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jbe@352
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30 #define COL_PREFERENCE 2
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jbe@352
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31 #define COL_SUGGESTION_ID 3
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32
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jbe@353
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33 struct candidate {
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34 char *key;
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jbe@356
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35 double score_per_step;
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jbe@353
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36 double score;
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jbe@353
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37 int seat;
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jbe@353
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38 };
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jbe@353
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39
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jbe@369
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40 static int compare_id(char *id1, char *id2) {
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jbe@369
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41 int ldiff;
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jbe@369
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42 ldiff = strlen(id1) - strlen(id2);
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jbe@369
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43 if (ldiff) return ldiff;
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jbe@369
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44 else return strcmp(id1, id2);
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jbe@369
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45 }
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jbe@369
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46
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jbe@353
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47 static int compare_candidate(struct candidate *c1, struct candidate *c2) {
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jbe@369
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48 return compare_id(c1->key, c2->key);
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jbe@353
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49 }
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jbe@352
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50
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jbe@353
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51 static int candidate_count;
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jbe@353
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52 static struct candidate *candidates;
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jbe@353
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53
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jbe@353
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54 static void register_candidate(char **candidate_key, VISIT visit, int level) {
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jbe@352
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55 if (visit == postorder || visit == leaf) {
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jbe@353
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56 struct candidate *candidate;
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jbe@353
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57 candidate = candidates + (candidate_count++);
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jbe@353
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58 candidate->key = *candidate_key;
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jbe@353
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59 candidate->seat = 0;
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jbe@352
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60 }
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jbe@352
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61 }
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jbe@352
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62
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jbe@353
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63 static struct candidate *candidate_by_key(char *candidate_key) {
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jbe@353
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64 struct candidate *candidate;
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jbe@353
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65 struct candidate compare;
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jbe@353
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66 compare.key = candidate_key;
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jbe@353
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67 candidate = bsearch(&compare, candidates, candidate_count, sizeof(struct candidate), (void *)compare_candidate);
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jbe@353
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68 if (!candidate) {
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jbe@356
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69 fprintf(stderr, "Candidate not found (should not happen).\n");
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jbe@352
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70 abort();
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jbe@352
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71 }
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jbe@353
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72 return candidate;
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jbe@352
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73 }
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jbe@352
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74
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jbe@352
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75 struct ballot_section {
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jbe@352
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76 int count;
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jbe@353
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77 struct candidate **candidates;
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jbe@352
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78 };
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jbe@352
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79
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jbe@352
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80 struct ballot {
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jbe@352
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81 int weight;
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jbe@352
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82 struct ballot_section sections[4];
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jbe@352
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83 };
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jbe@352
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84
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jbe@356
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85 static struct candidate *loser(int round_number, struct ballot *ballots, int ballot_count) {
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jbe@356
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86 int i, j, k;
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jbe@356
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87 int remaining;
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jbe@356
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88 for (i=0; i<candidate_count; i++) {
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jbe@356
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89 candidates[i].score = 0.0;
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jbe@356
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90 }
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jbe@356
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91 remaining = candidate_count - round_number;
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jbe@356
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92 while (1) {
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jbe@356
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93 double scale;
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jbe@356
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94 if (remaining <= 1) break;
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jbe@356
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95 for (i=0; i<candidate_count; i++) {
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jbe@356
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96 candidates[i].score_per_step = 0.0;
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jbe@356
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97 }
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jbe@356
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98 for (i=0; i<ballot_count; i++) {
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jbe@356
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99 for (j=0; j<4; j++) {
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jbe@356
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100 int matches = 0;
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jbe@356
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101 for (k=0; k<ballots[i].sections[j].count; k++) {
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jbe@356
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102 struct candidate *candidate;
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jbe@356
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103 candidate = ballots[i].sections[j].candidates[k];
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jbe@356
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104 if (candidate->score < 1.0 && !candidate->seat) matches++;
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jbe@356
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105 }
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jbe@356
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106 if (matches) {
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jbe@356
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107 double score_inc;
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jbe@368
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108 score_inc = (double)ballots[i].weight / (double)matches;
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jbe@356
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109 for (k=0; k<ballots[i].sections[j].count; k++) {
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jbe@356
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110 struct candidate *candidate;
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jbe@356
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111 candidate = ballots[i].sections[j].candidates[k];
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jbe@356
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112 if (candidate->score < 1.0 && !candidate->seat) {
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113 candidate->score_per_step += score_inc;
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jbe@356
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114 }
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jbe@356
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115 }
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jbe@356
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116 break;
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jbe@356
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117 }
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jbe@356
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118 }
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jbe@356
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119 }
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jbe@368
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120 scale = (double)0.0;
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jbe@356
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121 for (i=0; i<candidate_count; i++) {
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jbe@356
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122 double max_scale;
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jbe@356
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123 if (candidates[i].score_per_step > 0.0) {
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jbe@356
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124 max_scale = (1.0-candidates[i].score) / candidates[i].score_per_step;
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jbe@368
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125 if (scale == 0.0 || max_scale <= scale) {
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jbe@356
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126 scale = max_scale;
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jbe@356
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127 }
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jbe@356
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128 }
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jbe@356
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129 }
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jbe@356
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130 for (i=0; i<candidate_count; i++) {
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jbe@356
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131 if (candidates[i].score_per_step > 0.0) {
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jbe@370
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132 double max_scale;
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jbe@370
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133 max_scale = (1.0-candidates[i].score) / candidates[i].score_per_step;
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jbe@370
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134 if (max_scale == scale) {
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jbe@356
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135 candidates[i].score = 1.0;
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jbe@356
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136 remaining--;
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jbe@356
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137 } else {
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jbe@356
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138 candidates[i].score += scale * candidates[i].score_per_step;
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jbe@356
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139 if (candidates[i].score >= 1.0) remaining--;
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jbe@356
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140 }
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jbe@356
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141 if (remaining <= 1) break;
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jbe@356
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142 }
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jbe@356
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143 }
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jbe@356
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144 }
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jbe@356
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145 for (i=candidate_count-1; i>=0; i--) {
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jbe@356
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146 if (candidates[i].score < 1.0 && !candidates[i].seat) return candidates+i;
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jbe@356
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147 }
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jbe@356
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148 fprintf(stderr, "No remaining candidate (should not happen).");
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jbe@356
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149 abort();
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jbe@356
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150 }
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jbe@356
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151
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jbe@359
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152 static int write_ranks(PGconn *db, char *escaped_initiative_id, int final) {
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jbe@358
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153 PGresult *res;
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jbe@358
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154 char *cmd;
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jbe@358
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155 int i;
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jbe@359
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156 if (final) {
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jbe@359
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157 if (asprintf(&cmd, "BEGIN; UPDATE \"initiative\" SET \"final_suggestion_order_calculated\" = TRUE WHERE \"id\" = %s; UPDATE \"suggestion\" SET \"proportional_order\" = NULL WHERE \"initiative_id\" = %s", escaped_initiative_id, escaped_initiative_id) < 0) {
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jbe@359
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158 fprintf(stderr, "Could not prepare query string in memory.\n");
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jbe@359
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159 abort();
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jbe@359
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160 }
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jbe@359
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161 } else {
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jbe@359
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162 if (asprintf(&cmd, "BEGIN; UPDATE \"suggestion\" SET \"proportional_order\" = NULL WHERE \"initiative_id\" = %s", escaped_initiative_id) < 0) {
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jbe@359
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163 fprintf(stderr, "Could not prepare query string in memory.\n");
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jbe@359
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164 abort();
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jbe@359
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165 }
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jbe@358
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166 }
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jbe@358
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167 res = PQexec(db, cmd);
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jbe@358
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168 free(cmd);
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jbe@358
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169 if (!res) {
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jbe@358
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170 fprintf(stderr, "Error in pqlib while sending SQL command to initiate suggestion update.\n");
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jbe@358
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171 return 1;
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jbe@358
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172 } else if (
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jbe@358
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173 PQresultStatus(res) != PGRES_COMMAND_OK &&
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jbe@358
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174 PQresultStatus(res) != PGRES_TUPLES_OK
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jbe@358
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175 ) {
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jbe@358
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176 fprintf(stderr, "Error while executing SQL command to initiate suggestion update:\n%s", PQresultErrorMessage(res));
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jbe@358
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177 PQclear(res);
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jbe@358
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178 return 1;
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jbe@358
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179 } else {
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jbe@358
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180 PQclear(res);
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jbe@358
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181 }
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jbe@358
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182 for (i=0; i<candidate_count; i++) {
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jbe@358
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183 char *escaped_suggestion_id;
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jbe@358
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184 escaped_suggestion_id = escapeLiteral(db, candidates[i].key, strlen(candidates[i].key));
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jbe@358
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185 if (!escaped_suggestion_id) {
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jbe@358
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186 fprintf(stderr, "Could not escape literal in memory.\n");
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jbe@358
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187 abort();
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jbe@358
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188 }
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jbe@358
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189 if (asprintf(&cmd, "UPDATE \"suggestion\" SET \"proportional_order\" = %i WHERE \"id\" = %s", candidates[i].seat, escaped_suggestion_id) < 0) {
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jbe@358
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190 fprintf(stderr, "Could not prepare query string in memory.\n");
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jbe@358
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191 abort();
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jbe@358
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192 }
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jbe@358
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193 freemem(escaped_suggestion_id);
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jbe@358
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194 res = PQexec(db, cmd);
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jbe@358
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195 free(cmd);
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jbe@358
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196 if (!res) {
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jbe@358
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197 fprintf(stderr, "Error in pqlib while sending SQL command to update suggestion order.\n");
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jbe@358
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198 } else if (
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jbe@358
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199 PQresultStatus(res) != PGRES_COMMAND_OK &&
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jbe@358
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200 PQresultStatus(res) != PGRES_TUPLES_OK
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jbe@358
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201 ) {
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jbe@358
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202 fprintf(stderr, "Error while executing SQL command to update suggestion order:\n%s", PQresultErrorMessage(res));
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jbe@358
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203 PQclear(res);
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jbe@358
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204 } else {
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jbe@358
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205 PQclear(res);
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jbe@358
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206 continue;
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jbe@358
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207 }
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jbe@358
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208 res = PQexec(db, "ROLLBACK");
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jbe@358
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209 if (res) PQclear(res);
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jbe@358
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210 return 1;
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jbe@358
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211 }
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jbe@358
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212 res = PQexec(db, "COMMIT");
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jbe@358
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213 if (!res) {
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jbe@358
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214 fprintf(stderr, "Error in pqlib while sending SQL command to commit transaction.\n");
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jbe@358
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215 return 1;
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jbe@358
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216 } else if (
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jbe@358
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217 PQresultStatus(res) != PGRES_COMMAND_OK &&
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jbe@358
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218 PQresultStatus(res) != PGRES_TUPLES_OK
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jbe@358
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219 ) {
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jbe@358
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220 fprintf(stderr, "Error while executing SQL command to commit transaction:\n%s", PQresultErrorMessage(res));
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jbe@358
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221 PQclear(res);
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jbe@358
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222 return 1;
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jbe@358
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223 } else {
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jbe@358
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224 PQclear(res);
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jbe@358
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225 return 0;
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jbe@358
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226 }
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jbe@358
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227 }
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jbe@358
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228
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jbe@359
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229 static int process_initiative(PGconn *db, PGresult *res, char *escaped_initiative_id, int final) {
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jbe@358
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230 int err;
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jbe@366
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231 int ballot_count = 1;
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jbe@356
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232 struct ballot *ballots;
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jbe@355
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233 int i;
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jbe@355
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234 {
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jbe@355
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235 void *candidate_tree = NULL;
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jbe@355
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236 int tuple_count;
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jbe@355
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237 char *old_member_id = NULL;
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jbe@355
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238 struct ballot *ballot;
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jbe@355
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239 int candidates_in_sections[4] = {0, };
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jbe@367
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240 candidate_count = 0;
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jbe@359
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241 tuple_count = PQntuples(res);
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jbe@359
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242 if (!tuple_count) {
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jbe@359
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243 if (final) {
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jbe@359
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244 printf("No suggestions found, but marking initiative as finally calculated.\n");
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jbe@359
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245 err = write_ranks(db, escaped_initiative_id, final);
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jbe@359
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246 printf("Done.\n");
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jbe@359
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247 return err;
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jbe@359
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248 } else {
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jbe@359
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249 printf("Nothing to do.\n");
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jbe@359
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250 return 0;
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jbe@359
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251 }
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jbe@359
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252 }
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jbe@366
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253 for (i=0; i<tuple_count; i++) {
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jbe@355
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254 char *member_id, *suggestion_id;
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jbe@366
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255 member_id = PQgetvalue(res, i, COL_MEMBER_ID);
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jbe@366
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256 suggestion_id = PQgetvalue(res, i, COL_SUGGESTION_ID);
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jbe@369
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257 if (!candidate_tree || !tfind(suggestion_id, &candidate_tree, (void *)compare_id)) {
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jbe@366
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258 candidate_count++;
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jbe@369
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259 if (!tsearch(suggestion_id, &candidate_tree, (void *)compare_id)) {
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jbe@366
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260 fprintf(stderr, "Insufficient memory while inserting into candidate tree.\n");
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jbe@366
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261 abort();
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jbe@352
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262 }
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jbe@352
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263 }
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jbe@366
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264 if (old_member_id && strcmp(old_member_id, member_id)) ballot_count++;
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jbe@355
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265 old_member_id = member_id;
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jbe@352
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266 }
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jbe@355
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267 printf("Candidate count: %i\n", candidate_count);
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jbe@355
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268 candidates = malloc(candidate_count * sizeof(struct candidate));
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jbe@355
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269 if (!candidates) {
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jbe@356
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270 fprintf(stderr, "Insufficient memory while creating candidate list.\n");
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jbe@353
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271 abort();
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jbe@352
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272 }
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jbe@355
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273 candidate_count = 0;
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jbe@355
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274 twalk(candidate_tree, (void *)register_candidate);
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jbe@369
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275 while (candidate_tree) tdelete(*(void **)candidate_tree, &candidate_tree, (void *)compare_id);
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jbe@355
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276 printf("Ballot count: %i\n", ballot_count);
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jbe@355
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277 ballots = calloc(ballot_count, sizeof(struct ballot));
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jbe@355
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278 if (!ballots) {
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jbe@356
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279 fprintf(stderr, "Insufficient memory while creating ballot list.\n");
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jbe@353
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280 abort();
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jbe@352
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281 }
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jbe@355
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282 ballot = ballots;
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jbe@365
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283 old_member_id = NULL;
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jbe@355
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284 for (i=0; i<tuple_count; i++) {
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jbe@363
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285 char *member_id;
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jbe@355
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286 int weight, preference;
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jbe@352
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287 member_id = PQgetvalue(res, i, COL_MEMBER_ID);
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jbe@355
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288 weight = (int)strtol(PQgetvalue(res, i, COL_WEIGHT), (char **)NULL, 10);
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jbe@355
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289 if (weight <= 0) {
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jbe@356
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290 fprintf(stderr, "Unexpected weight value.\n");
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jbe@358
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291 free(ballots);
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jbe@358
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292 free(candidates);
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jbe@358
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293 return 1;
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jbe@355
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294 }
|
jbe@352
|
295 preference = (int)strtol(PQgetvalue(res, i, COL_PREFERENCE), (char **)NULL, 10);
|
jbe@352
|
296 if (preference < 1 || preference > 4) {
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jbe@356
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297 fprintf(stderr, "Unexpected preference value.\n");
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jbe@358
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298 free(ballots);
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jbe@358
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299 free(candidates);
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jbe@358
|
300 return 1;
|
jbe@352
|
301 }
|
jbe@352
|
302 preference--;
|
jbe@366
|
303 if (old_member_id && strcmp(old_member_id, member_id)) ballot++;
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jbe@355
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304 ballot->weight = weight;
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jbe@355
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305 ballot->sections[preference].count++;
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jbe@355
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306 old_member_id = member_id;
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jbe@355
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307 }
|
jbe@355
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308 for (i=0; i<ballot_count; i++) {
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jbe@355
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309 int j;
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jbe@355
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310 for (j=0; j<4; j++) {
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jbe@355
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311 if (ballots[i].sections[j].count) {
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jbe@355
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312 ballots[i].sections[j].candidates = malloc(ballots[i].sections[j].count * sizeof(struct candidate *));
|
jbe@355
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313 if (!ballots[i].sections[j].candidates) {
|
jbe@356
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314 fprintf(stderr, "Insufficient memory while creating ballot section.\n");
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jbe@355
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315 abort();
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jbe@355
|
316 }
|
jbe@355
|
317 }
|
jbe@355
|
318 }
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jbe@352
|
319 }
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jbe@365
|
320 old_member_id = NULL;
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jbe@355
|
321 ballot = ballots;
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jbe@365
|
322 for (i=0; i<tuple_count; i++) {
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jbe@355
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323 char *member_id, *suggestion_id;
|
jbe@355
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324 int preference;
|
jbe@366
|
325 member_id = PQgetvalue(res, i, COL_MEMBER_ID);
|
jbe@366
|
326 suggestion_id = PQgetvalue(res, i, COL_SUGGESTION_ID);
|
jbe@366
|
327 preference = (int)strtol(PQgetvalue(res, i, COL_PREFERENCE), (char **)NULL, 10);
|
jbe@366
|
328 preference--;
|
jbe@366
|
329 if (old_member_id && strcmp(old_member_id, member_id)) {
|
jbe@366
|
330 ballot++;
|
jbe@366
|
331 candidates_in_sections[0] = 0;
|
jbe@366
|
332 candidates_in_sections[1] = 0;
|
jbe@366
|
333 candidates_in_sections[2] = 0;
|
jbe@366
|
334 candidates_in_sections[3] = 0;
|
jbe@355
|
335 }
|
jbe@366
|
336 ballot->sections[preference].candidates[candidates_in_sections[preference]++] = candidate_by_key(suggestion_id);
|
jbe@355
|
337 old_member_id = member_id;
|
jbe@352
|
338 }
|
jbe@352
|
339 }
|
jbe@355
|
340
|
jbe@356
|
341 for (i=0; i<candidate_count; i++) {
|
jbe@356
|
342 struct candidate *candidate = loser(i, ballots, ballot_count);
|
jbe@356
|
343 candidate->seat = candidate_count - i;
|
jbe@358
|
344 printf("Assigning rank #%i to suggestion #%s.\n", candidate_count - i, candidate->key);
|
jbe@356
|
345 }
|
jbe@356
|
346
|
jbe@354
|
347 for (i=0; i<ballot_count; i++) {
|
jbe@354
|
348 int j;
|
jbe@354
|
349 for (j=0; j<4; j++) {
|
jbe@354
|
350 if (ballots[i].sections[j].count) {
|
jbe@354
|
351 free(ballots[i].sections[j].candidates);
|
jbe@354
|
352 }
|
jbe@354
|
353 }
|
jbe@354
|
354 }
|
jbe@354
|
355 free(ballots);
|
jbe@358
|
356
|
jbe@361
|
357 if (final) {
|
jbe@361
|
358 printf("Writing final ranks to database.\n");
|
jbe@361
|
359 } else {
|
jbe@361
|
360 printf("Writing ranks to database.\n");
|
jbe@361
|
361 }
|
jbe@359
|
362 err = write_ranks(db, escaped_initiative_id, final);
|
jbe@358
|
363 printf("Done.\n");
|
jbe@358
|
364
|
jbe@358
|
365 free(candidates);
|
jbe@358
|
366
|
jbe@358
|
367 return err;
|
jbe@352
|
368 }
|
jbe@352
|
369
|
jbe@352
|
370 int main(int argc, char **argv) {
|
jbe@352
|
371
|
jbe@352
|
372 // variable declarations:
|
jbe@352
|
373 int err = 0;
|
jbe@352
|
374 int i, count;
|
jbe@352
|
375 char *conninfo;
|
jbe@352
|
376 PGconn *db;
|
jbe@352
|
377 PGresult *res;
|
jbe@352
|
378
|
jbe@352
|
379 // parse command line:
|
jbe@352
|
380 if (argc == 0) return 1;
|
jbe@352
|
381 if (argc == 1 || !strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) {
|
jbe@352
|
382 FILE *out;
|
jbe@352
|
383 out = argc == 1 ? stderr : stdout;
|
jbe@362
|
384 fprintf(out, "\n");
|
jbe@362
|
385 fprintf(out, "Usage: %s <conninfo>\n", argv[0]);
|
jbe@362
|
386 fprintf(out, "\n");
|
jbe@362
|
387 fprintf(out, "<conninfo> is specified by PostgreSQL's libpq,\n");
|
jbe@362
|
388 fprintf(out, "see http://www.postgresql.org/docs/9.1/static/libpq-connect.html\n");
|
jbe@362
|
389 fprintf(out, "\n");
|
jbe@362
|
390 fprintf(out, "Example: %s dbname=liquid_feedback\n", argv[0]);
|
jbe@362
|
391 fprintf(out, "\n");
|
jbe@352
|
392 return argc == 1 ? 1 : 0;
|
jbe@352
|
393 }
|
jbe@352
|
394 {
|
jbe@352
|
395 size_t len = 0;
|
jbe@352
|
396 for (i=1; i<argc; i++) len += strlen(argv[i]) + 1;
|
jbe@352
|
397 conninfo = malloc(len * sizeof(char));
|
jbe@352
|
398 if (!conninfo) {
|
jbe@358
|
399 fprintf(stderr, "Error: Could not allocate memory for conninfo string.\n");
|
jbe@358
|
400 abort();
|
jbe@352
|
401 }
|
jbe@352
|
402 conninfo[0] = 0;
|
jbe@352
|
403 for (i=1; i<argc; i++) {
|
jbe@352
|
404 if (i>1) strcat(conninfo, " ");
|
jbe@352
|
405 strcat(conninfo, argv[i]);
|
jbe@352
|
406 }
|
jbe@352
|
407 }
|
jbe@352
|
408
|
jbe@352
|
409 // connect to database:
|
jbe@352
|
410 db = PQconnectdb(conninfo);
|
jbe@352
|
411 if (!db) {
|
jbe@358
|
412 fprintf(stderr, "Error: Could not create database handle.\n");
|
jbe@352
|
413 return 1;
|
jbe@352
|
414 }
|
jbe@352
|
415 if (PQstatus(db) != CONNECTION_OK) {
|
jbe@352
|
416 fprintf(stderr, "Could not open connection:\n%s", PQerrorMessage(db));
|
jbe@352
|
417 return 1;
|
jbe@352
|
418 }
|
jbe@352
|
419
|
jbe@352
|
420 // check initiatives:
|
jbe@352
|
421 res = PQexec(db, "SELECT \"initiative_id\", \"final\" FROM \"initiative_suggestion_order_calculation\"");
|
jbe@352
|
422 if (!res) {
|
jbe@358
|
423 fprintf(stderr, "Error in pqlib while sending SQL command selecting initiatives to process.\n");
|
jbe@352
|
424 err = 1;
|
jbe@352
|
425 } else if (PQresultStatus(res) != PGRES_TUPLES_OK) {
|
jbe@358
|
426 fprintf(stderr, "Error while executing SQL command selecting initiatives to process:\n%s", PQresultErrorMessage(res));
|
jbe@352
|
427 err = 1;
|
jbe@352
|
428 PQclear(res);
|
jbe@359
|
429 } else if (PQnfields(res) < 2) {
|
jbe@359
|
430 fprintf(stderr, "Too few columns returned by SQL command selecting initiatives to process.\n");
|
jbe@359
|
431 err = 1;
|
jbe@359
|
432 PQclear(res);
|
jbe@352
|
433 } else {
|
jbe@352
|
434 count = PQntuples(res);
|
jbe@352
|
435 printf("Number of initiatives to process: %i\n", count);
|
jbe@352
|
436 for (i=0; i<count; i++) {
|
jbe@352
|
437 char *initiative_id, *escaped_initiative_id;
|
jbe@359
|
438 int final;
|
jbe@352
|
439 char *cmd;
|
jbe@352
|
440 PGresult *res2;
|
jbe@352
|
441 initiative_id = PQgetvalue(res, i, 0);
|
jbe@359
|
442 final = (PQgetvalue(res, i, 1)[0] == 't') ? 1 : 0;
|
jbe@352
|
443 printf("Processing initiative_id: %s\n", initiative_id);
|
jbe@352
|
444 escaped_initiative_id = escapeLiteral(db, initiative_id, strlen(initiative_id));
|
jbe@358
|
445 if (!escaped_initiative_id) {
|
jbe@358
|
446 fprintf(stderr, "Could not escape literal in memory.\n");
|
jbe@358
|
447 abort();
|
jbe@358
|
448 }
|
jbe@352
|
449 if (asprintf(&cmd, "SELECT \"member_id\", \"weight\", \"preference\", \"suggestion_id\" FROM \"individual_suggestion_ranking\" WHERE \"initiative_id\" = %s ORDER BY \"member_id\", \"preference\"", escaped_initiative_id) < 0) {
|
jbe@352
|
450 fprintf(stderr, "Could not prepare query string in memory.\n");
|
jbe@355
|
451 abort();
|
jbe@352
|
452 }
|
jbe@352
|
453 res2 = PQexec(db, cmd);
|
jbe@352
|
454 free(cmd);
|
jbe@352
|
455 if (!res2) {
|
jbe@358
|
456 fprintf(stderr, "Error in pqlib while sending SQL command selecting individual suggestion rankings.\n");
|
jbe@352
|
457 err = 1;
|
jbe@352
|
458 } else if (PQresultStatus(res2) != PGRES_TUPLES_OK) {
|
jbe@358
|
459 fprintf(stderr, "Error while executing SQL command selecting individual suggestion rankings:\n%s", PQresultErrorMessage(res));
|
jbe@352
|
460 err = 1;
|
jbe@352
|
461 PQclear(res2);
|
jbe@356
|
462 } else if (PQnfields(res2) < 4) {
|
jbe@358
|
463 fprintf(stderr, "Too few columns returned by SQL command selecting individual suggestion rankings.\n");
|
jbe@356
|
464 err = 1;
|
jbe@356
|
465 PQclear(res2);
|
jbe@352
|
466 } else {
|
jbe@359
|
467 if (process_initiative(db, res2, escaped_initiative_id, final)) err = 1;
|
jbe@352
|
468 PQclear(res2);
|
jbe@352
|
469 }
|
jbe@352
|
470 freemem(escaped_initiative_id);
|
jbe@352
|
471 }
|
jbe@352
|
472 PQclear(res);
|
jbe@352
|
473 }
|
jbe@352
|
474
|
jbe@352
|
475 // cleanup and exit
|
jbe@352
|
476 PQfinish(db);
|
jbe@358
|
477 if (!err) printf("Successfully terminated.\n");
|
jbe@358
|
478 else fprintf(stderr, "Exiting with error code #%i.\n", err);
|
jbe@352
|
479 return err;
|
jbe@352
|
480
|
jbe@352
|
481 }
|