nova versao em c

tps/fonte/musica_gustavo.cpp

@@ -0,0 +1,230 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+
+#define TOTAL_MUSIC_NUMBER 170625
+#define MAX_LINE_LENGTH 1000
+#define MAX_PLAYLIST_LENGTH 500
+#define MAX_ID_LENGTH 25
+
+typedef struct{
+  char list[500];
+  int list_length;
+}Artists_list;
+
+//struct Date
+typedef struct{
+  int day;
+  int month;
+  int year;
+}Date;
+
+//struct Music
+typedef struct{
+  char id[MAX_ID_LENGTH];
+  char name[200];
+  char key[200];
+  Artists_list artists;
+  Date release_date;
+  double acousticness;
+  double danceability;
+  double energy;
+  int duration_ms;
+  double instrumentalness;
+  double valence;
+  int popularity;
+  float tempo;
+  double liveness;
+  double loudness;
+  double speechiness;
+  int year;
+}Music;
+
+//display que adequa a formatacao de datas
+void displayFormattedDate(Date *d){
+  printf("%0*d/%0*d/%0*d", 2, d->day, 2, d->month, 4, d->year);
+}
+
+//ler todo o arquivo
+void ler(char* filepath,char** totalMusicList){
+  FILE *f = fopen(filepath,"r");
+  
+  if(f == NULL){
+    perror("Error opening file");   //checagem de erro ao abrir o arquivo
+    printf("\n Sorry:(\n ");
+  }
+
+  else {
+    int i = 0;
+    char aux[MAX_LINE_LENGTH];
+    fgets(aux, MAX_LINE_LENGTH, f);
+    while(fgets(aux, MAX_LINE_LENGTH, f) != NULL){
+      strcpy(totalMusicList[i], aux);
+      i++;
+    } 
+    fclose(f);
+  }
+}
+
+//impressao padrao dos elementos relevantes da classe
+void imprimir(Music *m){
+ printf("%s ## %s ## %s ## ", m->id, m->artists.list, m->name);
+ displayFormattedDate(&m->release_date);
+ printf(" ## %lg ## %lg ## %lg ## %lg ",m->acousticness, m->danceability, m->instrumentalness, m->liveness);
+ printf("## %lg ## %lg ## %lg ## %d\n", m->loudness, m->speechiness, m->energy, m->duration_ms); 
+}
+
+//imprimir na tela
+void displayPlaylist(Music playlist[], int n){
+  for (int i = 0; i < n; i++)
+    imprimir(&playlist[i]);
+}
+
+//funcao de entrada de dados padronizada
+int standartInput(char inputs[MAX_PLAYLIST_LENGTH][MAX_ID_LENGTH]){
+  char aux[MAX_ID_LENGTH];
+  int input_quantity = 0;
+  do{
+    scanf(" %s", aux);
+    if(strcmp(aux, "FIM")!= 0){
+      strcpy(inputs[input_quantity], aux);
+      input_quantity++;
+    }
+  }while(strcmp(aux, "FIM") != 0 && input_quantity <= MAX_PLAYLIST_LENGTH);
+  return input_quantity;
+}
+
+//pesquisa sequencial do cadastro
+void searchById(char id[MAX_ID_LENGTH], char **totalMusicList, char* resp){
+  for(int i = 0; i < TOTAL_MUSIC_NUMBER; i++){
+    if(strstr(totalMusicList[i], id) != NULL){
+      strcpy(resp, totalMusicList[i]);
+      i = TOTAL_MUSIC_NUMBER;
+    }
+  }
+}
+
+//funcao que faz o split dos artibutos corretamente
+void readAtribute(int *stringIndex, char *infos, char* output){
+  int i = *stringIndex;
+  int j = 0;
+  while(infos[i] != '\0' && ((infos[i] != ',') || !(infos[i] == ',' && infos[i + 1] != ' '))){ //pulamos virgulas e quotes desnecessarios
+    if(infos[i] != '"') 
+      output[j++] = infos[i];  
+    i++;
+  }
+   output[j] = '\0';
+  *stringIndex = ++i;
+}
+
+//funcoes referente a manipulacao de datas  aaaa-mm-dd
+void insertDate(Date* d, char* not_formatted_date){
+ char day[3];
+ char month[3];
+ char year[5];
+  
+ strncpy(year,not_formatted_date,4);
+ d->year = atoi(year);
+ 
+ if(not_formatted_date[4] != '-'){
+    strcpy(month,"01");
+ } 
+
+ else{
+    month[0] = not_formatted_date[5];
+    month[1] = not_formatted_date[6];
+ }
+
+ if(not_formatted_date[7] != '-'){
+  strcpy(day,"01");
+ }
+ else {
+    day[0] = not_formatted_date[8];
+    day[1] = not_formatted_date[9];
+ }
+ d->month = atof(month);
+ d->year = atof(year);
+ d->day = atof(day);
+} 
+
+//leitura dos artistas
+void insertArtists(Artists_list* a,char* input){
+  int i = 0;
+  a->list_length = 0;
+  while(i < strlen(input)){
+    if(!(input[i] == 39 && (input[i - 1] == 91 || input[i+1] == 93 || input[i + 1] == 44 || input[i - 2] == 44))){
+      a->list[a->list_length] = input[i];
+      a->list_length++;
+    }
+    i++;
+  }
+}
+
+//funcao que simula um construtor
+void cadastra(char *music_info, Music *m){
+  int lineIndex = 0;
+  char fields[19][MAX_LINE_LENGTH];
+
+  //split dos atributos
+  for (int i = 0; i < 19; i++)
+    readAtribute(&lineIndex, music_info, fields[i]);
+
+  //cadastro individual
+  m->valence = atof(fields[0]);
+  m->year = atoi(fields[1]);
+  m->acousticness = atof(fields[2]);
+  insertArtists(&m->artists, fields[3]);
+  m->danceability = atof(fields[4]);
+  m->duration_ms = atof(fields[5]);
+  m->energy = atof(fields[6]);
+  //explicit nao utilizado
+  strcpy(m->id, fields[8]);
+  m->instrumentalness = atof(fields[9]);
+  strcpy(m->key, fields[10]);
+  m->liveness = atof(fields[11]);
+  m->loudness = atof(fields[12]);
+  //mode nao utilizado
+  strcpy(m->name, fields[14]);
+  m->popularity = atoi(fields[15]);
+  insertDate(&m->release_date, fields[16]);
+  m->speechiness = atof(fields[17]);
+  m->tempo = atof(fields[18]);
+}
+
+void insertOnPlaylist(int insert_quantity, char idList[MAX_PLAYLIST_LENGTH][MAX_ID_LENGTH], char **totalMusicList, Music playlist[]){
+  for (int i = 0; i < insert_quantity; i++)
+  {
+    char music_data[MAX_LINE_LENGTH];
+    searchById(idList[i], totalMusicList, music_data);
+    cadastra(music_data, &playlist[i]);
+  }
+}
+
+int main() {
+  //vetor que armazena os ids do input
+  char idList[MAX_PLAYLIST_LENGTH][MAX_ID_LENGTH];
+  // musicas que serao lidas pelo pub.in
+  Music playlist[MAX_PLAYLIST_LENGTH];
+  // numero de musicas de entrada
+  int playlist_length;
+
+  //alocacao do array de strings
+  char **totalMusicList;
+  totalMusicList = (char **)malloc(sizeof(char *) * TOTAL_MUSIC_NUMBER);
+
+  //alocacao das strings contidas no array
+  for (int i = 0; i < TOTAL_MUSIC_NUMBER; i++)
+    totalMusicList[i] = (char *)malloc(sizeof(char *) * MAX_LINE_LENGTH);
+
+  ler("/tmp/data.csv", totalMusicList);
+
+  playlist_length = standartInput(idList);
+
+  insertOnPlaylist(playlist_length, idList, totalMusicList, playlist);
+
+  displayPlaylist(playlist, playlist_length);
+
+  free(totalMusicList);
+  return 0;
+}