conversion works

2020-02-20 19:06:16 +01:00
parent 4e56af0f8a
commit 5369c77126
7 changed files with 925 additions and 992 deletions
--- a/srcs/ft_next_word.c
+++ b/srcs/ft_next_word.c
@@ -0,0 +1,102 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   next_word.c                                        :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/02/10 13:58:30 by hulamy            #+#    #+#             */
+/*   Updated: 2020/02/10 16:36:35 by hulamy           ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "ft_printf.h"
+
+/*
+** -placed outside of "word_length" for lake of space
+** -check if there is a '*' or a number
+** -usefull as such for the 'width', and after a check
+**  for a '.' for the 'precision' flag
+*/
+
+int		width_precision(char *s)
+{
+	int		i;
+
+	i = 0;
+	if (ft_strchr("*", s[i]) != NULL)
+		i++;
+	else if (ft_strchr("123456789", s[i]) != NULL)
+	{
+		i++;
+		while (ft_strchr("0123456789", s[i]) != NULL)
+			i++;
+	}
+	return (i);
+}
+
+/*
+** -return the length of the next word to print
+** -for that it got through the characters expecting
+**  in the following order :
+**  [%][flags][width][.precision][length][specifier]
+**  knowing that 'flags' can repeat themselves
+** -a single '%' is treated as a word of length 1
+**  (unlike the real printf)
+** -it's written :
+**   i += width_precision(s + i + 1) + 1;
+**  instead of :
+**   i++;
+**   i += width_precision(s + i);
+**  to save a line (3 with the brackets)
+*/
+
+int		word_length(char *s)
+{
+	int		i;
+
+	i = 1;
+	if (s[0] == '\0')
+		return (0);
+	if (s[0] != '%')
+	{
+		while (s[i] != '%' && s[i] != '\0')
+			i++;
+		return (i);
+	}
+	while (ft_strchr("#0- +'", s[i]) != NULL)
+		i++;
+	i += width_precision(s + i);
+	if (ft_strchr(".", s[i]) != NULL)
+		i += width_precision(s + i + 1) + 1;
+	while (ft_strchr("hl", s[i]) != NULL)
+		i++;
+	if (ft_strchr("diuxXcspefgn%", s[i]) != NULL)
+		i++;
+	return (i);
+}
+
+/*
+** -return the next sequence to be print
+**  (either a string, or a conversion)
+** -a single '%' is an error in real printf
+**  but is treated as a '%' here
+*/
+
+char	*next_word(char **string)
+{
+	char	*s;
+	char	*word;
+	int		i;
+
+	s = *string;
+	if (*s == '\0')
+		return (NULL);
+	if ((i = word_length(s)) < 0)
+		return (NULL);
+	word = (char *)malloc(sizeof(char) * (i + 1));
+	word[i] = '\0';
+	ft_memmove(word, s, i);
+	*string += i;
+	return (word);
+}