csv_reader_V2.c
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#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <stdlib.h>
typedef struct Personne Personne;
struct Personne {int athId; int regId; int divId; char* lastName; char* firstName; char gender; int age; char* weight; char* height; int affiliateId; char* affiliateName; int overallScrore; int overallRank; int score18_1; char* scoreDisplay18_1; int rank18_1; int score18_2; char* scoreDisplay18_2; int rank18_2;int score18_2a; char* scoreDisplay18_2a; int rank18_2a;int score18_3; char* scoreDisplay18_3; int rank18_3;int score18_4; char* scoreDisplay18_4; int rank18_4;int score18_5; char* scoreDisplay18_5; int rank18_5; Personne* suivant};
typedef Personne* Liste;
affiche_header_top50()
{
printf("Index nom prenom score");
}
affiche_header_recherche()
{
printf("athId nom prenom gender age taille poids score18.1 score18.2 score 18.2a score18.3 score18.4 score18.5");
}
affiche_top50(Personne P, int i)
{
printf("%d %s %s %d", i , P.lastName, P.firstName, P.score);
}
affiche_recherche(Personne P)
{
printf("%d %s %s %c %d %s %s %d %d %d %d %d %d", P.athId, P.lastName, P.firstName, P.gender, P.age, P.height, P.weight, P.score18_1, P.score18_2, P.score18_2a, P.score18_3, P.score18_4, P.score18_5);
}
// Conditionals
const bool IS_DEBUG = true;
// Constants
const unsigned int BUFFER_SIZE = 2048;
const unsigned int FIELD_SIZE = 20;
const char CSV_DELIMITERS[] = ",";
// Globals
char** CSV_HEADER_FIELDS;
unsigned int CSV_NB_FIELDS;
void display_header()
{
for(unsigned int i = 0; i < CSV_NB_FIELDS; i++)
{
printf("%d - %s\n", i, CSV_HEADER_FIELDS[i]);
}
}
void read_csv_header(char * header_line)
{
int line_length = strlen(header_line);
int nb_fields = 0;
char* string_ptr = header_line;
// Count the occurrences of delimiters
while (NULL != string_ptr)
{
nb_fields++;
string_ptr = strpbrk(string_ptr, CSV_DELIMITERS);
if (NULL != string_ptr)
{
string_ptr++;
}
}
// Globals allocation
CSV_NB_FIELDS = nb_fields;
CSV_HEADER_FIELDS = malloc( nb_fields * sizeof(char*) );
char* token = strtok(header_line, CSV_DELIMITERS); // strtok init.
// Re-read the line to get the header of the columns
for (unsigned int i = 0; i < nb_fields; i++)
{
CSV_HEADER_FIELDS[i] = malloc( FIELD_SIZE * sizeof(char) ); // alloc
memset(CSV_HEADER_FIELDS[i], 0, FIELD_SIZE); // 0 init.
strcpy(CSV_HEADER_FIELDS[i], token); // copy field in the structure
token = strtok(NULL, CSV_DELIMITERS); // loop to get a new field label
// printf("%s ", *token);
}
if (IS_DEBUG) display_header();
}
void read_csv_file(const char * filename)
{
FILE* fp = fopen(filename, "r");
char buffer[BUFFER_SIZE];
// Check if the file is really opened
if (NULL == fp)
{
fprintf(stderr, "Unable to open file: %s\n", filename);
return;
}
// 1st row is a header with field descriptions
fgets(buffer, BUFFER_SIZE, fp);
read_csv_header(buffer);
// Remaining rows are the entries
while ( NULL != fgets(buffer, BUFFER_SIZE, fp) )
{
char* token;
unsigned int i = 0;
// strtok init.
token = strtok(buffer, CSV_DELIMITERS);
while (NULL != token)
{
if (IS_DEBUG) printf("Field %d is %s\n", i++, token);
// ...
// you can strcpy the `token` string in your data structures
// ...
token = strtok(NULL, CSV_DELIMITERS);
}
}
fclose(fp);
}
void usage(const char * prog_name)
{
printf("Usage is %s your_csv_file\n\n", prog_name);
}
int main(int argc, char * argv[])
{
printf("test \n");
if (2 != argc)
{
usage(argv[0]);
return 0;
}
read_csv_file(argv[1]);
for(unsigned int i = 0; i < CSV_NB_FIELDS; i++)
{
free(CSV_HEADER_FIELDS[i]);
}
free(CSV_HEADER_FIELDS);
return 0;
}