csv_converter .h

#ifndef __CSV_CONVERTER_H_
#define __CSV_CONVERTER_H_


#define CSVC_NUMBER_OF_FIELDS 300
#define CSVC_NUMBER_OF_CHARACTERS_IN_FIELD 2000


/*
 * Structure of a record
 *
 * fp -> file pointer to where the catch records
 * index -> current record number
 * length -> number of fields
 * eof -> TRUE if fp came to end
 * fields -> array with values of the fields
 */
typedef struct {
        FILE* fp;
        int index;
        int length;
        int last_char;
        char fields[CSVC_NUMBER_OF_FIELDS][CSVC_NUMBER_OF_CHARACTERS_IN_FIELD];
} CSVC_RECORD;

/*
 * External declaration of the variable global_record defined in c_carmentito.c
 */
extern CSVC_RECORD csvc_record;

/*
 * Set the file pointer in global_record
 *
 * fp -> file pointer that will be set in global_record
 *
 * Returns: fp
 */
FILE* csvc_open_file(char* file_name);

/*
 * Set NULL to the fp in global_record
 *
 *
 *
 * Returns:
 * what fclose() returns
 */
int csvc_close_file(void);

/*
 * Points to next record (after RECORD_SEPARATOR) in fp
 *
 * Returns:
 * if csvc_record.last_char is EOF, returns EOF otherwise it returns RECORD_SEPARATOR
 */
int csvc_next_record(void);

/*
 * Read all the record fields and stores in global_record
 *
 * Returns:
 * if csvc_record.last_char is EOF, returns EOF otherwise it returns RECORD_SEPARATOR
 */
int csvc_load_record(void);

/*
 * Get value of the field that is in the position field_number at the RECORD struct
 *
 * field_number -> position of the field
 *
 * Returns:
 * value of the field
 */
char* csvc_field_value(unsigned int field_number);

/*
 * Get the first non-empty field in the current record starting in field_number at the RECORD struct
 *
 * field_number -> variable that contains the field position
 *
 * Returns:
 * position of the first field non-empty at this record
 */
int csvc_next_field_nonempty(unsigned int field_number);

#endif