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ft_printf_utils.c
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/* ************************************************************************** */
/* */
/* :::::::: */
/* ft_printf_utils.c :+: :+: */
/* +:+ */
/* By: jvan-hal <[email protected]> +#+ */
/* +#+ */
/* Created: 2022/10/27 16:09:23 by jvan-hal #+# #+# */
/* Updated: 2023/01/11 10:58:37 by jvan-hal ######## odam.nl */
/* */
/* ************************************************************************** */
#include "libft.h"
#include <stdlib.h>
#include <unistd.h>
static int getlength(unsigned int n, t_padding *padinfo)
{
int count;
count = 0;
if (padinfo->prec > -1)
padinfo->padc = ' ';
if (padinfo->prec == 0 && n == 0)
return (0);
while ((n / 10) > 0)
{
++count;
n /= 10;
}
if (n < 10)
++count;
if (count < padinfo->prec)
count = padinfo->prec;
if (padinfo->padc == '0' && padinfo->prec < 1 && padinfo->width > count)
{
padinfo->prec += (padinfo->width - count);
count = padinfo->width;
}
return (count);
}
char *ft_uitoa(unsigned int n, t_padding *padinfo)
{
int i;
char *c;
i = getlength(n, padinfo);
c = ft_calloc(i + 1, 1);
if (!c)
return (NULL);
--i;
while (n > 9)
{
c[i] = (n % 10) + '0';
n /= 10;
--i;
}
c[i] = n + '0';
while (i > 0)
{
--i;
c[i] = '0';
}
return (c);
}
static int printpreformatting(int strlen, t_padding *padinfo)
{
int i;
int formlen;
char *form;
formlen = 0;
if (padinfo->width > -1 && padinfo->adj == 'r' && strlen < padinfo->width)
{
i = padinfo->width - strlen;
form = ft_calloc(i + 1, 1);
if (!form)
return (-1);
formlen = i;
while (i > 0)
{
--i;
form[i] = padinfo->padc;
}
write(1, form, formlen);
free(form);
}
return (formlen);
}
static int printpostformatting(int strlen, t_padding *padinfo)
{
int i;
int formlen;
char *form;
formlen = 0;
if (padinfo->width > -1 && padinfo->adj == 'l' && strlen < padinfo->width)
{
i = padinfo->width - strlen;
form = ft_calloc(i + 1, 1);
if (!form)
return (-1);
formlen = i;
while (i > 0)
{
--i;
form[i] = padinfo->padc;
}
write(1, form, formlen);
free(form);
}
return (formlen);
}
int ft_writestr(char *s, char type, t_padding *padinfo)
{
int len;
int preformlen;
int postformlen;
if (!s)
s = ft_strdup("(null)");
if (!s)
return (-1);
len = ft_strlen(s);
if (type == 'c')
len = 1;
if (type == 's' && padinfo->prec > -1 && len > padinfo->prec)
len = padinfo->prec;
preformlen = printpreformatting(len, padinfo);
write(1, s, len);
if (type != 's' || ft_strnstr(s, "(null)", 6))
free(s);
if (preformlen == -1)
return (-1);
postformlen = printpostformatting(len, padinfo);
if (postformlen == -1)
return (-1);
return (len + preformlen + postformlen);
}