From 56eead92419a902b8ac6f4ac5c16a1289cf6295a Mon Sep 17 00:00:00 2001
From: Camille Chauvet <cchauvet@1E1.42angouleme.fr>
Date: Wed, 15 Feb 2023 21:31:49 +0100
Subject: [PATCH] fix: empty input segfault

---
 .infile.c.swp                      | Bin 12288 -> 0 bytes
 .heredoc.c.swp => .syntatics.c.swp | Bin 12288 -> 12288 bytes
 cmds.c                             |   4 +-
 infile.c                           |   4 +-
 outfile.c                          |   4 +-
 syntatics.c                        |  68 +++++++++++++++++++++--------
 t                                  |   0
 7 files changed, 57 insertions(+), 23 deletions(-)
 delete mode 100644 .infile.c.swp
 rename .heredoc.c.swp => .syntatics.c.swp (83%)
 delete mode 100644 t

diff --git a/.infile.c.swp b/.infile.c.swp
deleted file mode 100644
index c2bfbc114ea909bea81034aadb2b06bf28f8c35c..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001

literal 12288
zcmeI2J#5oJ6vwZK#ia#A1xT=5)1mHHQirN4tvd42sxW}sg`y~R&dnjm364#Hs+0u=
zR3tVA1Op3FE7S$4FtL>ZQL%tPY)GAeg{1=n{GG(ElR6n-s(6-uy1Vz@y?6efZ7Isl
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z;0h3691MXN_|?qVPw)eL1aH6^SOqJ<1rDH#6d(mi0aAbzAO%Q)|3ZNUrr5%9ZHuc$
zrfY;LFa(x9&9f+qZsv=k;#Z`>Rd1F*({KF@HRGD0U!Y_Td_kx2Dx$-DtKa$yiMW-h
zkiWMrl&^XUMkTID+rY)ukm?I86dCGPw#v8o?T$N#qpr`}@=&Sz8@wZHu=Q1*`h@~d
z&}qEQ`8sit=161Zk&gEHR==&fi|BjvUy*3NA`?X#ZBfTuegmV@M^5mJ6$hHC5Iizf
z<EnQ$^gK0)vPucUS;GC&SHf^ohAo7ha?&#?*K}kq?Fd!t<rw=FWlxXy^<c_8Q|7Wb
zSI$*<FG=3RwadJHl%JoRnCN1P<fFVFkwylcJ`FvTtNjL{peWeVatt*VoL3*_xwL8K
zb#A1QJ~M5_yxJ(|eWOr|j|N3bBaSS^f+?NURX6X5jA}|t^zu&LiFr)H8GBpl?nWrG
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LhI2hpZami?QL5g5

diff --git a/.heredoc.c.swp b/.syntatics.c.swp
similarity index 83%
rename from .heredoc.c.swp
rename to .syntatics.c.swp
index 476a49528d1c71d81b73fcb4f5ad4a08f1705c81..0f707c906c8bb95833122b4c4f19ce09b064e274 100644
GIT binary patch
literal 12288
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znr@TUlZZkODjxJGMlTjT_y;`*;=zNqhqll|p?K-RgY+nfpx^gqcHA{-Xz3~N3w$!W
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literal 12288
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K^YY$HUGWQkhn`aa

diff --git a/cmds.c b/cmds.c
index 65ee907..2c39eb7 100644
--- a/cmds.c
+++ b/cmds.c
@@ -6,7 +6,7 @@
 /*   By: cchauvet <cchauvet@student.42angoulem      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/02/15 14:17:26 by cchauvet          #+#    #+#             */
-/*   Updated: 2023/02/15 17:53:59 by cchauvet         ###   ########.fr       */
+/*   Updated: 2023/02/15 21:21:42 by cchauvet         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -109,7 +109,7 @@ t_list	**ft_parse_cmds(char *line)
 	cmds = malloc(sizeof(t_list *));
 	outfile = ft_outfile(line);
 	infile = ft_infile(line);
-	if (infile == -2)
+	if (infile == -2 || outfile == -2)
 		return (NULL);
 	if (ft_syntatic_verif(line) == 1)
 		return (NULL);
diff --git a/infile.c b/infile.c
index 95b922a..805ab12 100644
--- a/infile.c
+++ b/infile.c
@@ -6,7 +6,7 @@
 /*   By: cchauvet <cchauvet@student.42angoulem      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/02/15 17:52:10 by cchauvet          #+#    #+#             */
-/*   Updated: 2023/02/15 20:47:19 by cchauvet         ###   ########.fr       */
+/*   Updated: 2023/02/15 21:22:24 by cchauvet         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -25,6 +25,8 @@ static int	ft_infile_is_valid(const char *line)
 		ft_eprintf("minishell: malloc failed\n");
 		return (0);
 	}
+	if (tab[0] == NULL)
+		return (1);
 	i = 0;
 	while (tab[i + 1] != NULL)
 		i++;
diff --git a/outfile.c b/outfile.c
index b8e370f..f2e3c6b 100644
--- a/outfile.c
+++ b/outfile.c
@@ -6,7 +6,7 @@
 /*   By: cchauvet <cchauvet@student.42angoulem      +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/02/15 18:01:07 by cchauvet          #+#    #+#             */
-/*   Updated: 2023/02/15 20:48:39 by cchauvet         ###   ########.fr       */
+/*   Updated: 2023/02/15 21:22:51 by cchauvet         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -24,6 +24,8 @@ static int	ft_outfile_is_valid(const char *line)
 		ft_eprintf("minishell: malloc failed\n");
 		return (0);
 	}
+	if (tab[0] == NULL)
+		return (1);
 	i = 0;
 	while (tab[i + 1] != NULL)
 		i++;
diff --git a/syntatics.c b/syntatics.c
index f09460a..12e5939 100644
--- a/syntatics.c
+++ b/syntatics.c
@@ -1,5 +1,6 @@
 #include "libftx/libftx.h"
 #include "minishell.h"
+#include "utils/utils.h"
 
 static int	ft_quote_verif(const char *str)
 {
@@ -12,7 +13,33 @@ static int	ft_quote_verif(const char *str)
 		return (0);
 }
 
-static int	ft_multipipe(const char *str)
+static int	ft_pipe_is_alone(const char *str)
+{
+	size_t	i;
+	int		check;
+
+	check = 0;
+	i = 0;
+	while (str[i] != '\0')
+	{
+		if (str[i] != '|')
+			check = 1;
+		else
+		{
+			if (check == 0)
+			{
+				ft_eprintf("minishell: Pipe must be followed and ");
+				ft_eprintf("preced by a command or redirection\n");
+				return (1);
+			}
+			check = 0;
+		}
+		i++;
+	}
+	return (0);
+}
+
+static int	ft_special_char_dub(const char *str)
 {
 	size_t	i;
 	size_t	y;
@@ -20,39 +47,42 @@ static int	ft_multipipe(const char *str)
 	i = 0;
 	while (str[i] != '\0')
 	{
-		y = 0;
-		while (str[i + y] == '|' && !ft_is_in_quote(str, i))
+		if (ft_is_in_quote(str, i))
+			continue ;
+		if (ft_is_in("|<>", str[i]))
 		{
-			if (y > 0)
+			y = 0;
+			while (str[i] == str[i + y])
+				y++;
+			if ((y > 2 && (str[i] == '>' || str[i] == '<'))
+				|| (y > 1 && str[i] == '|'))
 			{
-				ft_eprintf("minishell: Multiple pipes is not supported\n");
+				ft_eprintf("minishell: to many %c in a row", str, str[i]);
 				return (1);
 			}
-			y++;
+			i = i + y;
 		}
 		i++;
 	}
 	return (0);
 }
 
-static int	ft_pipe_is_alone(const char *str)
+int	ft_empty_verif(const char *str)
 {
 	size_t	i;
 
-	i = ft_strlen(str) - 1;
-	while (str[i] != '|' && i > 0)
-	{
-		if (str[i] != ' ')
-			return (0);
-		i--;
-	}
-	if (i == 0)
-		return (0);
-	ft_eprintf("minishell: Pipe must be followed by a command or redirection\n");
-	return (1);
+	i = 0;
+	while (str[i] == ' ')
+		i++;
+	if (str[i] == '\0')
+		ft_eprintf("minishell: %s: command not found \n", str);
+	return (str[i] == '\0');
 }
 
 int	ft_syntatic_verif(const char *str)
 {
-	return (ft_quote_verif(str) || ft_multipipe(str) || ft_pipe_is_alone(str));
+	return (ft_quote_verif(str)
+		|| ft_pipe_is_alone(str)
+		|| ft_empty_verif(str)
+		|| ft_special_char_dub(str));
 }
diff --git a/t b/t
deleted file mode 100644
index e69de29..0000000