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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* parse_cmd.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dkaiser <dkaiser@student.42heilbronn.de +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/07/08 15:06:25 by dkaiser #+# #+# */
/* Updated: 2024/08/02 13:22:18 by dkaiser ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
static t_redirection *collect_redirs(t_token **tokens);
static t_assign **collect_assigns(t_token **tokens);
static char **collect_args(t_token **tokens);
static t_assign *to_assign(char *str);
static void set_redir(t_redirection *redir, int type,
char *specifier);
t_node *parse_cmd(t_token *tokens)
{
char **args;
t_assign **assigns;
t_redirection *redirs;
redirs = collect_redirs(&tokens);
assigns = collect_assigns(&tokens);
args = collect_args(&tokens);
return (new_cmd_node(args, assigns, redirs));
}
static t_redirection *collect_redirs(t_token **tokens)
{
t_redirection *result;
t_token *cur;
int idx;
cur = *tokens;
result = malloc(sizeof(t_redirection) * 2);
if (result == NULL)
{
// free all tokens
return (NULL);
}
set_redir(&result[0], 0, NULL);
set_redir(&result[1], 0, NULL);
while (cur != NULL && cur->next != NULL)
{
if (cur->type == REDIR_TOKEN && cur->next->type == STRING_TOKEN)
{
if (cur->content.redir_type & (INPUT_FILE | INPUT_LIMITER))
idx = 0;
else if (cur->content.redir_type & (OUTPUT_APPEND | OUTPUT_OVERRIDE))
idx = 1;
set_redir(&result[idx], cur->content.redir_type,
cur->next->content.string);
cur = cur->next;
free_token_and_connect(cur->previous);
if (cur->next != NULL)
{
if (cur->previous == NULL)
*tokens = cur->next;
cur = cur->next;
free_token_and_connect(cur->previous);
}
else
{
free_token(cur);
}
}
else if (cur->type == REDIR_TOKEN)
{
// err Parsing error
free(result);
return (NULL);
}
else
{
cur = cur->next;
}
}
return (result);
}
static t_assign **collect_assigns(t_token **tokens)
{
t_token *cur;
t_assign **result;
int i;
cur = *tokens;
i = 0;
while (cur != NULL && cur->type == STRING_TOKEN
&& cur->content.string[0] != '"' && cur->content.string[0] != '\''
&& ft_strchr(cur->content.string, '=') != NULL)
{
i++;
cur = cur->next;
}
result = malloc(sizeof(t_assign *) * (i + 1));
if (!result)
{
// free all tokens
return (NULL);
}
cur = *tokens;
i = 0;
while (cur != NULL && cur->type == STRING_TOKEN
&& cur->content.string[0] != '"' && cur->content.string[0] != '\''
&& ft_strchr(cur->content.string, '=') != NULL)
{
result[i] = to_assign(cur->content.string);
i++;
if (cur->next != NULL)
{
cur = cur->next;
free_token(cur->previous);
}
else
{
free_token(cur);
}
}
*tokens = cur;
result[i] = NULL;
return (result);
}
static t_assign *to_assign(char *str)
{
t_assign *result;
char *split_pos;
split_pos = ft_strchr(str, '=');
*split_pos = '\0';
result = malloc(sizeof(t_assign));
if (result == NULL)
{
return (NULL);
}
result->var = str;
result->value = split_pos + 1;
return (result);
}
static char **collect_args(t_token **tokens)
{
t_token *cur;
char **result;
int i;
cur = *tokens;
i = 0;
while (cur != NULL)
{
i++;
cur = cur->next;
}
result = malloc(sizeof(char *) * (i + 1));
if (!result)
{
// free all tokens;
return (NULL);
}
cur = *tokens;
i = 0;
while (cur != NULL && cur->type == STRING_TOKEN)
{
result[i] = cur->content.string;
// free token
i++;
cur = cur->next;
}
result[i] = NULL;
return (result);
}
static void set_redir(t_redirection *redir, int type, char *specifier)
{
redir->type = type;
redir->specifier = specifier;
}
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