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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* file.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: agassin <agassin@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/07/20 10:47:14 by cacharle #+# #+# */
/* Updated: 2019/07/21 14:44:22 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include "include.h"
/*
** Open the dictionnary file, pass it to `parse_dict`
** return the dict, NULL if an error occurs
*/
t_dict parse_dict_file(char *filename)
{
char *file;
int fildes;
int file_size;
t_dict dict;
if ((fildes = open(filename, O_RDONLY)) < 0)
return (NULL);
file = NULL;
if ((file_size = read_file(fildes, &file)) < 0)
return (NULL);
if ((dict = parse_dict(file, file_size)) == NULL)
{
destroy_dict(dict, -1);
free(file);
return (NULL);
}
free(file);
if (close(fildes) < 0)
return (NULL);
return (dict);
}
/*
** Parse the file and return a dictionary where the keys are
** the numbers and the values the string attached to it
*/
t_dict parse_dict(char *file, int file_size)
{
int i;
int j;
t_dict dict;
dict = (t_dict)malloc(sizeof(t_entry) * (count_lines(file) + 1));
if (dict == NULL)
return (NULL);
i = 0;
j = 0;
while (i < file_size)
{
while (file[i] && file[i] == '\n')
i++;
if (file[i] && (set_entry(&file[i], &dict[j++])) == -1)
{
destroy_dict(dict, j - 1);
return (NULL);
}
while (file[i] && file[i] != '\n')
i++;
}
dict[j].key = -1;
dict[j].value = NULL;
return (dict);
}
/*
** Set the key and value of an entry based on the given line
** return -1 if an error occurs
*/
int set_entry(char *line, t_entry *entry)
{
int i;
char *tmp;
i = 0;
while (line[i] >= '0' && line[i] <= '9')
i++;
if (i == 0)
return (-1);
tmp = ft_strndup(line, i);
entry->key = strict_atoi(tmp);
free(tmp);
while (line[i] == ' ')
i++;
if (line[i] != ':')
return (-1);
i++;
while (line[i] == ' ')
i++;
entry->value = filtered_value(&line[i]);
if (entry->value == NULL)
return (-1);
return (0);
}
/*
** Duplicate the line and compress spaces until there is only one left
*/
char *filtered_value(char *str)
{
int i;
int j;
char *value;
i = 0;
while (str[i] != '\n')
i++;
if (i == 0)
return (NULL);
if ((value = (char*)malloc(sizeof(char) * (i + 1))) == NULL)
return (NULL);
i = 0;
j = 0;
while (str[i] && str[i] != '\n')
{
value[j++] = str[i++];
while (str[i] && str[i] == ' ')
{
if (str[i + 1] && str[i + 1] != ' ')
break ;
i++;
}
}
value[i] = '\0';
return (value);
}
/*
** count the number of line in the file
** without counting empty lines
*/
int count_lines(char *file)
{
int counter;
counter = 0;
while (*file)
{
if (*file == '\n')
{
counter++;
while (*file == '\n')
file++;
}
file++;
}
return (counter);
}
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