10 files changed, 134 insertions, 10 deletions
diff --git a/src/ft_d_define.h b/src/ft_d_define.h
index 89e1106..b1e9a72 100644
--- a/src/ft_d_define.h
+++ b/src/ft_d_define.h
@@ -33,6 +33,13 @@
 #define FT_OPT_COMMAND			"-c"
 
 /*
+** ====== VARS ======
+*/
+
+#define FT_ZER_VAR	"$0"
+#define FT_RET_VAR	"$?"
+
+/*
 ** ====== FAIL MSG ======
 */
 
diff --git a/src/ft_p_lcom.c b/src/ft_p_lcom.c
index a08e8c2..9a7a1b8 100644
--- a/src/ft_p_lcom.c
+++ b/src/ft_p_lcom.c
@@ -134,7 +134,7 @@ int8_t
 		return (-1);
 	while (i <= count)
 	{
-		if (!(link = ft_lcom_new(words[i])))
+		if (!(link = ft_lcom_new(words[i], msh)))
 		{
 			return (-1);
 		}
diff --git a/src/ft_p_lcom_next.c b/src/ft_p_lcom_next.c
index df312bc..d1ab206 100644
--- a/src/ft_p_lcom_next.c
+++ b/src/ft_p_lcom_next.c
@@ -14,6 +14,44 @@
 #include <stdlib.h>
 #include <stdint.h>
 
+#include "ft_s_struct.h"
+#include "ft_u_utils.h"
+
+char
+	**ft_subst_vars(char *words[],
+					t_msh *msh)
+{
+	/* TODO: norme */
+	char	**p_words;
+	char	**p_env;
+	char	*s_varname;
+	int64_t	i;
+	size_t	varlen;
+
+	p_words = words;
+	varlen = 0;
+	while (*p_words)
+	{
+		while (varlen < ft_strlen(*p_words) &&
+			(i = ft_strlchr((*p_words) + varlen, '$')))
+		{
+			if (i == -1)
+				break ;
+			varlen = i + 1;
+			while ((*p_words)[varlen] != '\0' && (*p_words)[varlen] != '$')
+				varlen += 1;
+			if (!(s_varname = ft_substr(*p_words, (uint32_t)i, varlen)))
+				return (NULL);
+			ft_printf("{%s} | {%s}\n", s_varname, ft_subst_var_value(s_varname, msh));
+			p_env = msh->envp;
+			ft_memdel((void*)&s_varname);
+			varlen += 1;
+		}
+		p_words += 1;
+	}
+	return (words);
+}
+
 char
 	**ft_subst_args(const char word[],
 					int8_t redir)
diff --git a/src/ft_p_lcom_next.h b/src/ft_p_lcom_next.h
index 6f0c2a8..54eefd2 100644
--- a/src/ft_p_lcom_next.h
+++ b/src/ft_p_lcom_next.h
@@ -15,6 +15,10 @@
 
 #include <stdint.h>
 
+#include "ft_s_struct.h"
+
+char	**ft_subst_vars(char *words[],
+						t_msh *msh);
 char	**ft_subst_args(const char word[],
 						int8_t redir);
 
diff --git a/src/ft_p_line.c b/src/ft_p_line.c
index 07c5fac..b1ba6b2 100644
--- a/src/ft_p_line.c
+++ b/src/ft_p_line.c
@@ -17,6 +17,7 @@
 #include "ft_f_fail.h"
 #include "ft_p_lcom.h"
 #include "ft_p_line.h"
+#include "ft_s_destroy.h"
 #include "ft_s_struct.h"
 
 void
@@ -42,6 +43,7 @@ void
 	}
 	if (ft_p_lcom(line, count, msh) < 0)
 	{
+		ft_s_destroy(msh);
 		ft_fail_alloc(msh);
 	}
 }
diff --git a/src/ft_s_lcom.c b/src/ft_s_lcom.c
index 03b2f67..ab63414 100644
--- a/src/ft_s_lcom.c
+++ b/src/ft_s_lcom.c
@@ -106,12 +106,27 @@ void
 	*lcom = NULL;
 }
 
+/* !!!!!!!!!! ATTENTION !!!!!!!!!!! */
+/* TODO: remove this after tests */
+/* !!!!!!!!!! ATTENTION !!!!!!!!!!! */
+static void
+ft_print_words(char *words[])
+{
+	while (*words)
+	{
+		ft_printf("[%s]\n", *words);
+		words++;
+	}
+}
+
 t_lcom
-	*ft_lcom_new(const char word[])
+	*ft_lcom_new(const char word[],
+				t_msh *msh)
 {
 	t_lcom	*link;
 	char	**words;
 
+	(void)msh;
 	if (!(link = (t_lcom*)malloc(sizeof(t_lcom))))
 		return (NULL);
 	link->redir = 0;
@@ -123,6 +138,13 @@ t_lcom
 		return (NULL);
 	if (!(words = ft_subst_args(word, link->redir)))
 		return (NULL);
+	if (!(words = ft_subst_vars(words, msh)))
+		return (NULL);
+	/* !!!!!!!!!! ATTENTION !!!!!!!!!!! */
+	/* TODO: remove this after tests */
+	ft_print_words(words);
+	/* TODO: remove this after tests */
+	/* !!!!!!!!!! ATTENTION !!!!!!!!!!! */
 	if (ft_fill_lcom(words, &link) < 0)
 	{
 		ft_delwords(words);
diff --git a/src/ft_s_lcom.h b/src/ft_s_lcom.h
index eae0501..6db58d3 100644
--- a/src/ft_s_lcom.h
+++ b/src/ft_s_lcom.h
@@ -18,7 +18,8 @@
 void	ft_lcom_add_back(t_lcom **alcom,
 						t_lcom *new);
 void	ft_lcom_clear(t_lcom **lcom);
-t_lcom	*ft_lcom_new(const char word[]);
+t_lcom	*ft_lcom_new(const char word[],
+					t_msh *msh);
 t_lcom	*ft_lcom_last(t_lcom *lcom);
 
 #endif
diff --git a/src/ft_u_utils.c b/src/ft_u_utils.c
index cd9e53f..594f2c8 100644
--- a/src/ft_u_utils.c
+++ b/src/ft_u_utils.c
@@ -14,8 +14,24 @@
 #include <stdlib.h>
 #include <stdint.h>
 
+#include "ft_f_fail.h"
+#include "ft_s_destroy.h"
+#include "ft_s_lcom.h"
 #include "ft_s_struct.h"
 
+uint64_t
+	ft_get_argc(const char *args[])
+{
+	uint64_t	argc;
+
+	argc = 0;
+	while (args[argc])
+	{
+		argc++;
+	}
+	return (argc);
+}
+
 char
 	*ft_get_home_dir(char **envp)
 {
@@ -35,15 +51,46 @@ char
 	return (NULL);
 }
 
-uint64_t
-	ft_get_argc(const char *args[])
+/*
+** char *
+** ft_subst_var_value(const char varname[], const t_msh *msh);
+**
+** DESCRIPTION
+** The ft_subst_var_value() function returns
+** a heap-allocated, null-terminated string
+** that may later be free'd containing the
+** value of the variable varname[] including
+** the '$' prefix. NULL is returned if varname[]
+** wasn't found.
+*/
+
+char
+	*ft_subst_var_value(const char varname[],
+						t_msh *msh)
 {
-	uint64_t	argc;
+	char	**p_env;
+	char	*varval;
 
-	argc = 0;
-	while (args[argc])
+	p_env = msh->envp;
+	varval = NULL;
+	while (*p_env)
 	{
-		argc++;
+		if (!ft_strncmp(*p_env, varname + 1, ft_strlen(varname + 1) + 1))
+		{
+			ft_printf("(%s)\n", *p_env);
+			while (**p_env != '\0' && **p_env != '=')
+				**p_env += 1;
+			if (**p_env == '=')
+				**p_env += 1;
+			if (!(varval = ft_strdup(*p_env)))
+			{
+				ft_lcom_clear(&msh->curr);
+				ft_s_destroy(msh);
+				ft_fail_alloc(msh);
+			}
+			return (varval);
+		}
+		p_env += 1;
 	}
-	return (argc);
+	return (NULL);
 }
diff --git a/src/ft_u_utils.h b/src/ft_u_utils.h
index d025cb2..05b3ab3 100644
--- a/src/ft_u_utils.h
+++ b/src/ft_u_utils.h
@@ -17,5 +17,7 @@
 
 uint64_t	ft_get_argc(const char *args[]);
 char		*ft_get_home_dir(char *envp[]);
+char		*ft_subst_var_value(const char varname[],
+								t_msh *msh);
 
 #endif
diff --git a/src/minishell.c b/src/minishell.c
index 1df809b..36ba25a 100644
--- a/src/minishell.c
+++ b/src/minishell.c
@@ -30,6 +30,7 @@ int
 	int32_t	ret;
 
 	/* TODO: increment $SHLVL */
+	/* TODO: handle general variables | $var */
 	if (!(msh = ft_init_msh(envp)))
 	{
 		ft_dprintf(2, "%s\n", strerror(errno));