ajout de ft_printf a la librairie

srcs/ft_printf_files/ft_convert.c

@@ -0,0 +1,105 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_convert.c                                       :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/03/12 22:30:05 by hulamy            #+#    #+#             */
+/*   Updated: 2020/06/30 00:40:49 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+/*
+** -convert the next argument into a string according to the following
+**  correspondances for diuxXcspefgn :
+**  [char]				[hhd, hhi, c]			[int]			[d i c]
+**  [short]				[hd, hi]				[int]
+**  [int]				[d, i]					[int]
+**  [long]				[ld, li]				[long]			[ld li]
+**  [long long]			[lld, lli]				[long]
+**  [unsigned char]		[hhu, hhx, hhX]			[unsigned int]	[u x X p s]
+**  [unsigned short]	[hu, hx, hX]			[unsigned int]
+**  [unsigned int]		[u, x, X, p]			[unsigned int]
+**  [unsigned long]		[lu, lx, lX]			[unsigned long]	[lu lx lX]
+**  [unsigned long long][llu, llx, llX]			[unsigned long]
+**  [char *]			[s, hhn]
+**  [double]			[e, le, f, lf, g, lg]
+**  [wint_t]			[lc]
+**  [wchar_t]			[ls]
+**  [short *]			[hn]
+**  [int *]				[n]
+**  [long *]			[ln]
+**  [long long *]		[lln]
+** -'h' and 'hh', are traited just like regular size because of
+**  default promotion, that promote smaller type than int into int
+*/
+
+char	*conv_i(char c, long int i)
+{
+	char	*s;
+
+	if (c == 'c')
+	{
+		s = ft_strdup("0");
+		s[0] = i;
+		return (s);
+	}
+	if (c == 'd' || c == 'i')
+		return (ft_itoa(i));
+	return (NULL);
+}
+
+char	*conv_u(char c, unsigned long int i)
+{
+	char	*s;
+
+	if (c == 's')
+		return (i == 0 ? ft_strdup("(null)") : ft_strdup((char *)i));
+	s = ft_utoa(i);
+	if (c == 'u')
+		return (s);
+	if (c == 'x' || c == 'p')
+		return (ft_convertbase_free(s, "0123456789", "0123456789abcdef"));
+	if (c == 'X')
+		return (ft_convertbase_free(s, "0123456789", "0123456789ABCDEF"));
+	return (NULL);
+}
+
+/*
+** -first a loop to expand all the stars from width and .precision
+**  they always expand into int type
+**  it's done first because those are the first next args on the va_list
+** -for each kind of specifier there is finally four kinds of conversion :
+**  int / long int / unsigned int / unsingned long int
+** -the conversion 'uxX' associated with 'l' are converted with lu, but
+**  also are 'p' and 's', without an 'l' flag, that's why there is this little
+**  trick on line the line for unsigned int :
+** -'uxXps' && 'lps' will make it looks for 'uxX' and for 'l'
+**  (because it will never find a 'p' or a 's' if there are 'uxX' already)
+**  or for 'p' and again for 'p', or 's' twice similarly
+*/
+
+char	*ft_convert(va_list ap, char *type, char **s)
+{
+	char	*tmp;
+
+	while (ft_strchr(*s, '*'))
+		if (!(ft_expand_star(va_arg(ap, int), s)))
+			return (NULL);
+	if ((tmp = ft_strchrset(type, "dic")) && ft_strchr(type, 'l'))
+		return (conv_i(tmp[0], va_arg(ap, long int)));
+	if ((tmp = ft_strchrset(type, "dic")))
+		return (conv_i(tmp[0], va_arg(ap, int)));
+	if ((tmp = ft_strchrset(type, "uxXps")) && ft_strchrset(type, "lps"))
+		return (conv_u(tmp[0], va_arg(ap, unsigned long int)));
+	if ((tmp = ft_strchrset(type, "uxX")))
+		return (conv_u(tmp[0], va_arg(ap, unsigned int)));
+	if (ft_strchr(type, '%'))
+		return (ft_strdup("%"));
+	if (ft_strchrset(type, "efgn"))
+		return (NULL);
+	return (NULL);
+}