42/42_INT_07_minishell
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

commit pour merge

Browse Source
This commit is contained in:
hugogogo
2021-12-17 12:00:32 +01:00
parent 424e2563ac 59f0b7603b
commit 530027c0e8
32 changed files with 621 additions and 565 deletions
Download Patch File Download Diff File Expand all files Collapse all files

141
srcs/parsing/expansions/expand_token.c
View File

@@ -6,100 +6,125 @@
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/07 02:01:33 by lperrey #+# #+# */
/* Updated: 2021/12/10 10:27:50 by hulamy ### ########.fr */
/* Updated: 2021/12/16 14:51:33 by hulamy ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
static t_list *ret_parameter_expansion(char *content, int *i);
static t_list *content_copy(char *content, int *i, int *quotes_state);
static t_list *content_expand(char *content, int *i);
static char *env_var_expansion(char *content, int *i);
t_list *expand_token(char *content)
{
int in_quotes;
int quotes_state;
int i;
int i_exp;
t_list head;
t_list *expand;
in_quotes = 0;
i = 0;
head.next = NULL;
expand = &head;
quotes_state = 0;
i = 0;
while (content[i])
{
if (content[i] == '$')
{
expand->next = ret_parameter_expansion(content, &i);
expand = expand->next;
if (!expand)
{//todo wrap
perror("expand_token() error");
return (ft_lstclear(&head.next, free));
}
}
expand->next = content_expand(content, &i);
else
{
expand->next = ft_lstnew_generic(sizeof(t_list), ft_strlen(&content[i]) + 1);
expand = expand->next;
i_exp = 0;
if (!expand)
{//todo wrap
perror("expand_token() error");
return (ft_lstclear(&head.next, free));
}
while (content[i] && (content[i] != '$' || in_quotes == IN_QUOTES))
{
// quoting
if (content[i] == '\'' && in_quotes != IN_DQUOTES)
{
if (in_quotes == IN_QUOTES)
in_quotes = 0;
else
in_quotes = IN_QUOTES;
}
((char *)expand->content)[i_exp++] = content[i++];
}
expand->next = content_copy(content, &i, &quotes_state);
expand = expand->next;
if (!expand)
{//todo wrap
perror("expand_token() error");
return (ft_lstclear(&head.next, free));
}
}
return (head.next);
}
// a voir si je retourne pas plutot un "char *".
// Malloc la lst dans la fonction est peut-être un peu superflu et pas super clair.
static t_list *ret_parameter_expansion(char *content, int *i)
static t_list *content_copy(char *content, int *i, int *quotes_state)
{
int i_exp;
t_list *expand;
expand = ft_lstnew_generic(sizeof(t_list), ft_strlen(&content[*i]) + 1);
if (!expand)
return (NULL);
i_exp = 0;
while (content[*i] && (content[*i] != '$' || *quotes_state == IN_QUOTES))
{
if (content[*i] == '\'' && *quotes_state != IN_DQUOTES)
{
if (*quotes_state == IN_QUOTES)
*quotes_state = 0;
else
*quotes_state = IN_QUOTES;
}
((char *)expand->content)[i_exp++] = content[(*i)++];
}
return (expand);
}
static t_list *content_expand(char *content, int *i)
{
t_list *expand;
char *tmp;
int i_tmp;
tmp = ft_calloc(ft_strlen(&content[*i]) + 1, 1);
if (!tmp)
return (NULL);
expand = ft_lstnew(NULL);
if (!expand)
return (ft_retp_free(NULL, tmp, free));
return (NULL);
expand->content = env_var_expansion(content, i);
if (!expand->content)
{
free(expand);
return (NULL);
}
return (expand);
}
static char *retrieve_var(char *content, int *i);
static char *env_var_expansion(char *content, int *i)
{
char *expansion;
(*i)++; // skip '$'
if (content[*i] == '?')
{
(*i)++;
expand->content = ft_itoa(get_last_exit_status());
return (ft_retp_free(expand, tmp, free));
expansion = ft_itoa(get_last_exit_status());
}
else if (content[*i] != '_' && !ft_isalpha(content[*i]))
else if (content[*i] == '_' || ft_isalpha(content[*i]))
expansion = retrieve_var(content, i);
else
{
tmp[0] = '$';
expand->content = tmp;
return (expand);
expansion = ft_calloc(1 + 1, 1);
if (!expansion)
return (NULL);
expansion[0] = '$';
}
i_tmp = 0;
return (expansion);
}
static char *retrieve_var(char *content, int *i)
{
char *expansion;
char *tmp;
int i_exp;
expansion = ft_calloc(ft_strlen(&content[*i - 1]) + 1, 1); // *i - 1 for '$' skip
if (!expansion)
return (NULL);
i_exp = 0;
while (content[*i] == '_' || ft_isalnum(content[*i]))
tmp[i_tmp++] = content[(*i)++];
expand->content = getenv(tmp);
free(tmp);
if (expand->content)
expand->content = ft_strdup(expand->content);
return (expand);
expansion[i_exp++] = content[(*i)++];
tmp = getenv(expansion);
ft_free_null(&expansion);
if (tmp)
expansion = ft_strdup(tmp);
else
expansion = ft_calloc(1, 1);
return (expansion);
}
/*