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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* printer.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/10/28 23:19:24 by cacharle #+# #+# */
/* Updated: 2019/10/29 05:20:14 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include <unistd.h>
#include <stdlib.h>
#include <stdarg.h>
#include "header.h"
#define ITOA_HEX_LOWER(x) (ft_itoa_base(x, "0123456789abcdef"))
#define ITOA_HEX_UPPER(x) (ft_itoa_base(x, "0123456789ABCDEF"))
#define IN_STR(str, c) (ft_strchr(str, c) != NULL)
char *convert(t_pformat *pformat, va_list ap)
{
char *str;
if (pformat->flags & FLAG_MIN_WIDTH_WILDCARD)
{
if (pformat->flags & FLAG_MIN_WIDTH_OVERWRITE)
(void)va_arg(ap, int);
else
pformat->min_width = va_arg(ap, int);
if (pformat->min_width < 0)
{
pformat->flags |= FLAG_LEFT_ADJUSTED;
pformat->min_width *= -1;
}
}
if (pformat->flags & FLAG_PRECISION_WILDCARD)
pformat->precision = va_arg(ap, int);
if ((str = convert_type(pformat->conversion, ap)) == NULL)
return (NULL);
if ((str = handle_precision(pformat, str)) == NULL)
return (NULL);
if (pformat->conversion == 'p')
if ((str = add_address_prefix(str)) == NULL)
return (NULL);
if ((str = handle_padding(pformat, str)) == NULL)
return (NULL);
return (str);
}
char *convert_type(t_conversion conversion, va_list ap)
{
char *str;
str = NULL;
if (conversion == 'c')
{
if ((str = ft_strnew(2)) == NULL)
return (NULL);
str[0] = (char)va_arg(ap, int);
}
else if (conversion == 's')
str = ft_strdup(va_arg(ap, char*));
else if (conversion == 'p')
str = ITOA_HEX_LOWER((long int)va_arg(ap, void*));
else if (conversion == 'd' || conversion == 'i')
str = ft_itoa(va_arg(ap, int));
else if (conversion == 'u')
str = ft_itoa(va_arg(ap, unsigned int));
else if (conversion == 'x')
str = ITOA_HEX_LOWER(va_arg(ap, unsigned int));
else if (conversion == 'X')
str = ITOA_HEX_UPPER(va_arg(ap, unsigned int));
else if (conversion == '%')
str = ft_strdup("%");
return (str);
}
char *handle_padding(t_pformat *pformat, char *str)
{
char *tmp;
int len;
int i;
if ((len = ft_strlen(str)) >= pformat->min_width)
return (str);
if ((tmp = (char*)malloc(sizeof(char) * (pformat->min_width + 1))) == NULL)
return (NULL);
if (pformat->flags & FLAG_LEFT_ADJUSTED)
{
ft_strcpy(tmp, str);
i = len;
while (i < pformat->min_width)
tmp[i++] = ' ';
ft_strcpy(str, tmp);
}
else
{
i = 0;
while (i <= pformat->min_width - len)
tmp[i++] = pformat->flags & FLAG_ZERO_PADDING ? '0' : ' ';
ft_strcpy(tmp + i - 1, str);
ft_strcpy(str, tmp);
}
free(tmp);
return (str);
}
char *handle_precision(t_pformat *pformat, char *str)
{
int len;
char *tmp;
len = ft_strlen(str);
if (pformat->conversion == 's' && pformat->precision < len)
str[pformat->precision] = '\0';
else if (IN_STR("diuxXp", pformat->conversion) && len < pformat->precision)
{
if ((tmp = (char*)malloc(sizeof(char) * (pformat->precision + 1))) == NULL)
return (NULL);
ft_strcpy(tmp + pformat->precision - len, str);
pformat->precision -= len;
while (pformat->precision-- > 0)
tmp[pformat->precision] = '0';
ft_strcpy(str, tmp);
free(tmp);
}
return (str);
}
char *add_address_prefix(char *addr)
{
char *tmp;
if ((tmp = ft_strdup(addr)) == NULL)
return (NULL);
if ((addr = ft_strjoin("0x", addr)) == NULL)
return (NULL);
free(tmp);
return (addr);
}
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