168 lines
4.3 KiB
C
168 lines
4.3 KiB
C
/* ************************************************************************** */
|
|
/* */
|
|
/* ::: :::::::: */
|
|
/* ft_flag_transform.c :+: :+: :+: */
|
|
/* +:+ +:+ +:+ */
|
|
/* By: hulamy <marvin@42.fr> +#+ +:+ +#+ */
|
|
/* +#+#+#+#+#+ +#+ */
|
|
/* Created: 2020/02/27 11:55:43 by hulamy #+# #+# */
|
|
/* Updated: 2020/02/27 11:55:45 by hulamy ### ########.fr */
|
|
/* */
|
|
/* ************************************************************************** */
|
|
|
|
#include "ft_printf.h"
|
|
|
|
/*
|
|
** -function that modify the string 'print' according to the precision flag :
|
|
** if length(s) < precision, add x '0' bfr nbr, but after '-' if negative
|
|
*/
|
|
|
|
char *precision_int(char *print, int precision)
|
|
{
|
|
int i;
|
|
char *tmp;
|
|
|
|
i = ft_strlen(print);
|
|
if (print[0] == '-')
|
|
precision++;
|
|
if (precision > i)
|
|
{
|
|
if (!(tmp = (char *)malloc(sizeof(char) * (precision + 1))))
|
|
return (NULL);
|
|
tmp[precision] = '\0';
|
|
if (print[0] == '-')
|
|
tmp[0] = '-';
|
|
while (i)
|
|
tmp[--precision] = print[--i];
|
|
if (print[0] == '-')
|
|
precision++;
|
|
while (precision)
|
|
tmp[--precision] = '0';
|
|
if (print[0] == '-')
|
|
tmp[0] = '-';
|
|
free(print);
|
|
print = tmp;
|
|
}
|
|
return (print);
|
|
}
|
|
|
|
/*
|
|
** -it first verify if there is a precision point, and if so, it execute a
|
|
** serie of action listed below, otherwise return print as it is
|
|
** ACTIONS :
|
|
** -look for a '.'
|
|
** -if followed by numbers, extract an int version of those numbers
|
|
** -if the '.' is alone, gives value '0' to the int
|
|
** -then removes the '.' and the numbers from the %string
|
|
** -if flag '0' is present in %string, removes it (actually turn each occurence
|
|
** in a '.')
|
|
** -and transform 'print' according to the precision :
|
|
** -0 if .precision == 0 and print == "0": return (print[0] = '\0') (print nothing)
|
|
** -1 if type is s: if length(s) > precision, removes end of 'print' to print
|
|
** only x chars, with x = precision
|
|
** -2 if type is "diouxX": call fonction 'precision_int' that return :
|
|
** if length(s) < precision, add x '0' bfr nbr, but after '-' if negative
|
|
** -3 if type is "aAeEfF": not covered
|
|
** -4 if type is "gG": not covered
|
|
** -5 else: error
|
|
*/
|
|
|
|
char *ft_precision(char *s, char *print, char *type)
|
|
{
|
|
char *tmp;
|
|
int precision;
|
|
int i;
|
|
|
|
if ((tmp = ft_strchr(s, '.')))
|
|
{
|
|
precision = ft_atoi(tmp + 1);
|
|
*tmp = '\0';
|
|
while (ft_strchr("#- +'0", *(++s)))
|
|
if (*s == '0')
|
|
*s = '.';
|
|
i = 0;
|
|
if (precision == 0 && !ft_strcmp(print, "0"))
|
|
print[0] = '\0';
|
|
else if (ft_strchr(type, 's'))
|
|
{
|
|
while (i < precision && print[i])
|
|
i++;
|
|
if (print[i])
|
|
print[i] = '\0';
|
|
}
|
|
else if (ft_strchrset(type, "diouxX"))
|
|
print = precision_int(print, precision);
|
|
}
|
|
return (print);
|
|
}
|
|
|
|
/*
|
|
** -if flag '-' is present, put extra width as ' ' to right of 'print'
|
|
** -if flag '0' is present, put extra width as '0' to left of 'print'
|
|
** -else, put extra width as ' ' to left of 'print'
|
|
*/
|
|
|
|
char *width_flags(char *print, char *tmp, char *s, int width)
|
|
{
|
|
char c;
|
|
int i;
|
|
int j;
|
|
|
|
i = 0;
|
|
j = 0;
|
|
if (ft_strchr(s, '-'))
|
|
{
|
|
while (print[j])
|
|
tmp[i++] = print[j++];
|
|
while (i < width)
|
|
tmp[i++] = ' ';
|
|
}
|
|
else
|
|
{
|
|
c = (ft_strchr(s, '0')) ? '0' : ' ' ;
|
|
while (i < (width - ft_strlen(print)))
|
|
tmp[i++] = c;
|
|
while (print[j])
|
|
tmp[i++] = print[j++];
|
|
}
|
|
free(print);
|
|
return (tmp);
|
|
}
|
|
|
|
/*
|
|
** -if there is a minimal width field, calculate it and add it to print
|
|
** according to the flags '-' and '0' if present
|
|
*/
|
|
|
|
char *ft_width(char *s, char *print)
|
|
{
|
|
char *tmp;
|
|
int width;
|
|
|
|
tmp = s;
|
|
while (*tmp != '\0' && ft_strchr("%#- +'0.", *tmp))
|
|
tmp++;
|
|
width = ft_atoi(tmp);
|
|
tmp[0] = '\0';
|
|
if (width > ft_strlen(print))
|
|
{
|
|
if (!(tmp = (char *)malloc(sizeof(char) * (width + 1))))
|
|
return (NULL);
|
|
tmp[width] = '\0';
|
|
print = width_flags(print, tmp, s, width);
|
|
}
|
|
return (print);
|
|
}
|
|
|
|
|
|
/*
|
|
** go through all the transformation flags needs
|
|
*/
|
|
|
|
char *ft_flag_transform(char *s, char *print, char *type)
|
|
{
|
|
print = ft_precision(s, print, type);
|
|
print = ft_width(s, print);
|
|
return (print);
|
|
}
|