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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* collect_redirs.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: chuhlig <chuhlig@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/08/02 13:49:31 by dkaiser #+# #+# */
/* Updated: 2025/01/13 09:52:00 by chuhlig ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
static void collect_and_check_redir(t_redirection *result, t_token **cur);
static void set_redir(t_redirection *redir, int type, char *specifier);
static char *read_heredoc(char *delimiter)
{
char *line;
char *result;
char *temp;
size_t total_length;
size_t line_length;
total_length = 0;
result = NULL;
while (1)
{
line = readline("> ");
if (!line || ft_strcmp(line, delimiter) == 0)
{
free(line);
break ;
}
line_length = ft_strlen(line) + 1;
temp = malloc(total_length + line_length + 1);
if (!temp)
{
perror("malloc");
free(result);
return (NULL);
}
if (result)
{
ft_strcpy(temp, result);
free(result);
}
else
{
temp[0] = '\0';
}
ft_strcat(temp, line);
ft_strcat(temp, "\n");
result = temp;
total_length += line_length;
free(line);
}
return (result);
}
t_redirection *collect_redirs(t_token **tokens)
{
t_redirection *result;
t_token *cur;
cur = *tokens;
result = malloc(sizeof(t_redirection) * 2);
if (result == NULL)
return (free_tokens(*tokens), 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)
collect_and_check_redir(result, &cur);
else if (cur->type == REDIR_TOKEN)
return (free(result), NULL);
else
cur = cur->next;
}
if (cur && cur->type == REDIR_TOKEN)
return (free(result), NULL);
return (result);
}
static void set_redir(t_redirection *redir, int type, char *specifier)
{
redir->type = type;
redir->specifier = specifier;
}
static void collect_and_check_redir(t_redirection *result, t_token **cur)
{
char *heredoc_data;
t_token *next_token;
heredoc_data = NULL;
if ((*cur)->content.redir_type == INPUT_LIMITER)
{
heredoc_data = read_heredoc((*cur)->next->content.string);
if (!heredoc_data)
{
perror("Heredoc allocation failed");
return ;
}
set_redir(&result[0], INPUT_LIMITER, heredoc_data);
}
else if ((*cur)->content.redir_type == INPUT_FILE)
set_redir(&result[0], INPUT_FILE, ft_strdup((*cur)->next->content.string));
else if ((*cur)->content.redir_type == OUTPUT_OVERRIDE)
set_redir(&result[1], OUTPUT_OVERRIDE, ft_strdup((*cur)->next->content.string));
else if ((*cur)->content.redir_type == OUTPUT_APPEND)
set_redir(&result[1], OUTPUT_APPEND, ft_strdup((*cur)->next->content.string));
else
printf("Unknown redirection type encountered\n");
next_token = (*cur)->next;
free_token_and_connect(*cur);
if (next_token)
{
*cur = next_token->next;
free_token_and_connect(next_token);
}
else
*cur = NULL;
}
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