From 1531206a1e5545824d76bf7a73249d6be9237c67 Mon Sep 17 00:00:00 2001
From: Charles <sircharlesaze@gmail.com>
Date: Sat, 12 Oct 2019 15:47:43 +0200
Subject: WIP parsing flags, happy path

---
 ft_printf.c |  5 +++++
 header.h    |  2 ++
 parse.c     | 42 +++++++++++++++++++++++++++++++++++++-----
 utils.c     |  9 +++++++--
 4 files changed, 51 insertions(+), 7 deletions(-)

diff --git a/ft_printf.c b/ft_printf.c
index 1c0d8ea..9540489 100644
--- a/ft_printf.c
+++ b/ft_printf.c
@@ -60,5 +60,10 @@ int main()
     ft_printf("hex lower: %x\n", 0xabcf012);
     ft_printf("hex upper: %X\n", 0xabcf012);
     ft_printf("percent: %%\n");
+
+	/* ft_printf("precision %.2d\n", 43); */
+	ft_printf("min width %4d\n", 43);
+	ft_printf("zero padding %04d\n", 43);
+	ft_printf("right adjusted %-4d\n", 43);
     return 0;
 }
diff --git a/header.h b/header.h
index 3c8aba9..52f20e0 100644
--- a/header.h
+++ b/header.h
@@ -58,6 +58,7 @@ int ft_printf(const char *format, ...);
 t_list		*parse(const char *format);
 char		*isolate_conversion(const char *conversion_start);
 t_pformat	*parse_conversion(char *conversion);
+char	*parse_arg_position(char *conversion, t_pformat *pformat);
 
 /*
 ** printer.c
@@ -78,6 +79,7 @@ char	*ft_strndup(const char *s1, int n);
 char	*ft_strrchr(const char *s, int c);
 int		strrchr_index(const char *s, char c);
 int		ft_strlen(char *str);
+t_bool	ft_isdigit(char c);
 
 /*
 ** list.c
diff --git a/parse.c b/parse.c
index 11316ba..4ca73bd 100644
--- a/parse.c
+++ b/parse.c
@@ -2,6 +2,7 @@
 #include "header.h"
 
 #define STRRCHR_CONVERSIONS(c) (ft_strrchr(CONVERSIONS_STR, c))
+#define IS_STANDALONE_FLAG(c) (c == '0' || c == '-')
 
 t_list			*parse(const char *format)
 {
@@ -37,9 +38,11 @@ char		*isolate_conversion(const char *conversion_start)
 	return (ft_strndup(conversion_start, i + 1));
 }
 
+// %[position][dollar][flags][width][.precision][length]type
 t_pformat	*parse_conversion(char *conversion)
 {
 	int i;
+	char	*start;
 	t_pformat	*pformat;
 
 	if (conversion == NULL)
@@ -47,12 +50,41 @@ t_pformat	*parse_conversion(char *conversion)
 	if ((pformat = (t_pformat*)malloc(sizeof(t_pformat))) == NULL)
 		return (NULL);
 	i = ft_strlen(conversion) - 1;
+	pformat->len = i + 1;
 	pformat->conversion = strrchr_index(CONVERSIONS_STR, conversion[i]);
 	i--;
-	pformat->arg_position = 0;
-	pformat->left_adjusted = FALSE;
-	pformat->zero_padding = FALSE;
-	pformat->min_field_width = -1;
-	pformat->len = 1;
+	if ((conversion = parse_arg_position(conversion, pformat)) == NULL)
+		return (NULL);
+	start = conversion;
+	while (IS_STANDALONE_FLAG(*start))
+	{
+		if (!pformat->zero_padding)
+			pformat->zero_padding = *start == '0';
+		if (!pformat->left_adjusted)
+			pformat->left_adjusted = *start == '-';
+		start++;
+	}
+	if (ft_isdigit(*start))
+		pformat->min_field_width = ft_atoi(start);
+	else
+		pformat->min_field_width = -1;
 	return (pformat);
 }
+
+char	*parse_arg_position(char *conversion, t_pformat *pformat)
+{
+	if (strrchr_index(conversion, '$') != -1)
+	{
+		if ((pformat->arg_position = ft_atoi(conversion)) == 0)
+		{
+			free(pformat);
+			return (NULL);
+		}
+		while (ft_isdigit(*conversion))
+			conversion++;
+		conversion++;
+	}
+	else
+		pformat->arg_position = -1;
+	return (conversion);
+}
diff --git a/utils.c b/utils.c
index 9e8d4e9..bf30662 100644
--- a/utils.c
+++ b/utils.c
@@ -64,7 +64,7 @@ char	*ft_strrchr(const char *s, int c)
 {
 	int i;
 
-	i = ft_strlen(s) - 1;
+	i = ft_strlen((char*)s) - 1;
 	while (s[i] != (char)c)
 	{
 		if (i == 0)
@@ -78,7 +78,7 @@ int		strrchr_index(const char *s, char c)
 {
 	int i;
 
-	i = ft_strlen(s) - 1;
+	i = ft_strlen((char*)s) - 1;
 	while (s[i] != c)
 	{
 		if (i == 0)
@@ -98,3 +98,8 @@ int		ft_strlen(char *str)
 		counter++;
 	return (counter);
 }
+
+t_bool	ft_isdigit(char c)
+{
+	return (c >= '0' && c <= '9');
+}
-- 
cgit