conversion works

srcs/ft_convert.c

@@ -0,0 +1,78 @@
+
+#include "ft_printf.h"
+
+/*
+** FT_CONVERT :
+** -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;
+
+	s = ft_utoa(i);
+	if (c == 's')
+		return (strdup((char *)i));
+	if (c == 'u')
+		return (s);
+	if (c == 'x' || c == 'p')
+		return (ft_convertbase(s, "0123456789", "0123456789abcdef"));
+	if (c == 'X')
+		return (ft_convertbase(s, "0123456789", "0123456789ABCDEF"));
+	return (NULL);
+}
+
+char	*ft_convert(va_list ap, char *type)
+{
+	char	*s;
+
+	if ((s = ft_strchrset(type, "dic")) && ft_strchr(type, 'l'))
+		return (conv_i(s[0], va_arg(ap, long int)));
+	if ((s = ft_strchrset(type, "dic")))
+		return (conv_i(s[0], va_arg(ap, int)));
+	if ((s = ft_strchrset(type, "uxX")) && ft_strchr(type, 'l'))
+		return (conv_u(s[0], va_arg(ap, unsigned long int)));
+	if ((s = ft_strchrset(type, "uxXp")))
+		return (conv_u(s[0], va_arg(ap, unsigned int)));
+	if ((s = ft_strchrset(type, "s")))
+		return (conv_u(s[0], va_arg(ap, unsigned long int)));
+	if (ft_strchrset(type, "efgn"))
+		return (NULL);
+	return (NULL);
+}