106 lines
2.7 KiB
C
106 lines
2.7 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_vsprintf.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: cchauvet <cchauvet@student.42angoulem +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2022/10/06 10:44:36 by cchauvet #+# #+# */
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/* Updated: 2022/10/10 19:32:04 by cchauvet ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "printf.h"
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static size_t ft_seglen(const char *str)
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{
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size_t i;
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i = 0;
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while ((str[i] != 0 && str[i] != '%') || (str[i] == '%' && i == 0))
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i++;
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return (i);
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}
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static char *ft_strfjoin(char *s1, char *s2)
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{
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size_t i;
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size_t j;
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char *out;
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out = malloc((ft_strlen(s1) + ft_seglen(s2) + 1) * sizeof(char));
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if (out == NULL)
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return (NULL);
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i = 0;
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while (s1[i] != 0)
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{
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out[i] = s1[i];
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i++;
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}
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free(s1);
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j = 0;
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while ((s2[j] != 0 && s2[j] != '%') || (s2[j] == '%' && j == 0))
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{
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out[i + j] = s2[j];
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j++;
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}
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free(s2);
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out[i + j] = 0;
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return (out);
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}
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static char *ft_argtoa(int c, va_list args)
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{
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char *out;
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if (c == 'c')
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return (ft_ctoa(va_arg(args, int)));
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if (c == 's')
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return (ft_strdup(va_arg(args, char *)));
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if (c == 'd' || c == 'i')
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return (ft_itoa(va_arg(args, long int)));
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if (c == 'p')
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return (ft_ptoa(va_arg(args, void *)));
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if (c == 'x')
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return (ft_ltoabase(va_arg(args, long int), "0123456789abcdef"));
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if (c == 'X')
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return (ft_ltoabase(va_arg(args, long int), "0123456789ABCDEF"));
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if (c == 'u')
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return (ft_ultoabase(va_arg(args, unsigned long int), "0123456789"));
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if (c == '%')
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return (ft_strdup("%"));
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out = ft_strdup("% ");
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if (out == NULL)
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return (NULL);
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out[1] = c;
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return (out);
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}
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char *ft_vsprintf(char *str, const char *format, va_list va)
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{
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char *cformat;
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char *ccformat;
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char *mid;
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cformat = ft_strdup(format);
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ccformat = cformat;
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if (str == NULL || cformat == NULL)
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return (0);
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while (cformat != NULL)
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{
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if (cformat[0] != '%')
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str = ft_strfjoin(str, ft_strdup(cformat));
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cformat = ft_strchr(cformat, '%');
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if (cformat == NULL)
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break ;
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cformat += 1;
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mid = ft_argtoa(cformat[0], va);
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while (mid == NULL)
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mid = ft_strdup("(null)");
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str = ft_strfjoin(str, mid);
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cformat += 1;
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}
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free(ccformat);
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return (str);
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}
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