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expand + bug fixes

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This commit is contained in:
Loic Deridder
2025-02-08 14:13:24 +01:00
parent 373e240e85
commit c1d3992fc2
6 changed files with 345 additions and 51 deletions
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92
srcs/expander/expand_tilde.c Normal file
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@@ -0,0 +1,92 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* expand_tilde.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/02/07 12:56:32 by lderidde #+# #+# */
/* Updated: 2025/02/08 13:15:52 by lderidde ### ########.fr */
/* */
/* ************************************************************************** */
#include "../../includes/minishell.h"
static int get_new_len(t_ast_n *node, int j)
{
int i;
int len;
i = -1;
len = ft_strlen(node->args[j]);
while (node->args[j][++i])
{
if (node->args[j][i] == '~')
{
len += ft_strlen(get_var_value("HOME", node->msh->env)) - 1;
}
}
return (len);
}
size_t ft_astrlcat(char *dst, const char *src, size_t dstsize)
{
size_t dst_len;
size_t src_len;
size_t i;
if (!dst || !src)
return (0);
dst_len = ft_strlen(dst);
src_len = ft_strlen(src);
if (dstsize <= dst_len)
return (dstsize + src_len);
i = -1;
while (src[++i] && (dst_len + i) < (dstsize - 1))
dst[dst_len + i] = src[i];
dst[dst_len + i] = '\0';
return (dst_len + src_len);
}
void expander_tilde(t_ast_n *node, int j)
{
int i;
int len;
int save;
char *new;
i = -1;
len = get_new_len(node, j);
new = ft_calloc(len + 1, sizeof(char));
if (!new)
return ;
save = len;
len = 0;
while (++i < save)
{
if (node->args[j][len] != '~')
new[i] = node->args[j][len++];
else
{
ft_astrlcat(new, get_var_value("HOME", node->msh->env), -1);
i = ft_strlen(new) - 1;
len++;
}
}
ft_free(&node->args[j]);
node->args[j] = new;
}
int expand_tilde(t_ast_n *node, int j)
{
int i;
i = 0;
while (node->args[j][i])
{
if (node->args[j][i] == '~')
return (expander_tilde(node, j), 1);
i++;
}
return (0);
}

121
srcs/expander/expand_var.c Normal file
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@@ -0,0 +1,121 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* expand_var.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/02/07 12:58:25 by lderidde #+# #+# */
/* Updated: 2025/02/08 10:53:48 by lderidde ### ########.fr */
/* */
/* ************************************************************************** */
#include "../../includes/minishell.h"
static int is_validchar(char c)
{
if (ft_isalnum(c) || c == '_')
return (1);
return (0);
}
static int get_var_len(t_ast_n *node, int j , int *i)
{
int len;
int ret;
char *str;
len = *i + 1;
while (node->args[j][len] && is_validchar(node->args[j][len]))
len++;
str = ft_substr(node->args[j], *i + 1, (size_t)len - (*i + 1));
*i = len;
ret = ft_strlen(get_var_value(str, node->msh->env));
ft_free(&str);
return (ret - (len - (*i + 1)));
}
static char *extract_env(char *str, char **envp)
{
int i;
char *var;
char *tmp;
i = 1;
while (str[i] && is_validchar(str[i]))
i++;
if (i > 1)
tmp = ft_substr(str, 1, i - 1);
var = get_var_value(tmp, envp);
free(tmp);
return (var);
}
static int get_new_len(t_ast_n *node, int j)
{
int i;
int len;
i = 0;
len = ft_strlen(node->args[j]);
while (node->args[j][i])
{
if (node->args[j][i] == '$')
{
len += get_var_len(node, j , &i);
i--;
}
i++;
}
return (len);
}
int valid_next(char c)
{
if (c != '\0' && is_validchar(c))
return (1);
return (0);
}
void expander_var(t_ast_n *node, int j)
{
int i;
int k;
int len;
char *new;
i = -1;
len = get_new_len(node, j);
new = ft_calloc(len + 1, sizeof(char));
if (!new)
return ;
k = 0;
while (node->args[j][k] && ++i < len)
{
if (node->args[j][k] != '$')
new[i] = node->args[j][k++];
else if (node->args[j][k] == '$' && valid_next(node->args[j][k + 1]))
{
ft_strlcat(new, extract_env(&node->args[j][k], node->msh->env), -1);
i = ft_strlen(new) - 1;
while (node->args[j][++k] && is_validchar(node->args[j][k]))
continue ;
}
}
ft_free(&node->args[j]);
node->args[j] = new;
}
int expand_var(t_ast_n *node, int j)
{
int i;
i = 0;
while (node->args[j][i])
{
if (node->args[j][i] == '$')
return (expander_var(node, j), 1);
i++;
}
return (0);
}

99
srcs/expander/expander.c
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@@ -6,66 +6,85 @@
/* By: lderidde <lderidde@student.s19.be> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2025/02/07 10:23:02 by lderidde #+# #+# */
/* Updated: 2025/02/07 12:31:57 by lderidde ### ########.fr */
/* Updated: 2025/02/08 14:10:50 by lderidde ### ########.fr */
/* */
/* ************************************************************************** */
#include "../../includes/minishell.h"
#include "../../includes/exec/expander.h"
int get_new_len(t_ast_n *node, int j)
int remove_quote(t_ast_n *node, int j)
{
int i;
int len;
i = 0;
len = ft_strlen(node->args[j]);
while (node->args[j][++i])
{
if (node->args[j][i] == '~')
{
len += ft_strlen(get_var_value("HOME", node->msh->env)) - 1;
}
}
return (len);
}
void expand_tilde(t_ast_n *node, int j)
{
int i;
int len;
int save;
char *new;
int ret;
i = -1;
len = get_new_len(node, j);
new = ft_calloc(len + 1, sizeof(char));
if (!new)
return ;
save = len;
len = 0;
while (++i < save)
ret = 0;
if (node->args[j][0])
{
if (node->args[j][len] != '~')
new[i] = node->args[j][len++];
else
{
ft_strlcat(new, get_var_value("HOME", node->msh->env), -1);
i = ft_strlen(new) - 1;
len++;
}
if (node->args[j][0] == '\'' || node->args[j][0] == '\"')
ret = 1;
}
new = ft_strtrim(node->args[j], "'\"");
ft_free(&node->args[j]);
node->args[j] = new;
return (ret);
}
char **arrange_tabs(t_ast_n *node, char **tab, int j)
{
int save;
int i;
int k;
int len;
char **new_arg;
i = 0;
k = 0;
len = 0;
save = count_var(node->args) + count_var(tab);
new_arg = ft_calloc(sizeof(char *), save);
while (i < save - 1)
{
if (i == j)
{
while (tab[k])
new_arg[i++] = ft_strdup(tab[k++]);
len++;
}
else
new_arg[i++] = ft_strdup(node->args[len++]);
}
return (new_arg);
}
void split_tab(t_ast_n *node, int j)
{
char **tab;
char **new_arg;
tab =ft_split(node->args[j], " ");
new_arg = arrange_tabs(node, tab, j);
free_tab(tab);
free_tab(node->args);
node->args = new_arg;
}
t_ast_n *expand_node(t_ast_n *node)
{
int i;
int check;
i = -1;
while (node->args[++i])
{
expand_tilde(node, i);
check = 0;
if (expand_tilde(node, i))
check = 1;
if (expand_var(node, i))
check = 1;
if (check && !remove_quote(node, i))
split_tab(node, i);
(void)check;
}
return (node);
}