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Merge branch 'master' of bitbucket.org:LuckyLaszlo/minishell into hugogogo

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This commit is contained in:
hugogogo
2021-11-17 15:28:09 +01:00
parent 493ac0bd40 26993144cc
commit 6a4b1f54b2
30 changed files with 1620 additions and 476 deletions
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10
Makefile
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@@ -5,7 +5,9 @@ CC = clang
CFLAGS = -Wall -Wextra $(INCLUDES) -g # add -Werror, del -g CFLAGS = -Wall -Wextra $(INCLUDES) -g # add -Werror, del -g
VPATH = $(DIR_SRCS) VPATH = $(DIR_SRCS)
DIR_SRCS = srcs srcs/builtins srcs/lexing srcs/parsing DIR_SRCS = srcs srcs/builtins srcs/lexing \
srcs/parsing srcs/parsing/valid_syntax \
srcs/parsing/expansions srcs/parsing/redirections
INCLUDES = -I$(HEADERS_D) -I$(LIBFT_D) INCLUDES = -I$(HEADERS_D) -I$(LIBFT_D)
@@ -25,8 +27,12 @@ SRCS = main.c init.c free.c generic.c \
signals.c \ signals.c \
shell_loop.c shell_script.c \ shell_loop.c shell_script.c \
lexing.c fill_token.c check_operators.c \ lexing.c fill_token.c check_operators.c \
parsing.c \ parsing.c cmd_array.c \
valid_syntax.c valid_pipeline.c valid_command.c valid_io_redirect.c \ valid_syntax.c valid_pipeline.c valid_command.c valid_io_redirect.c \
words_expansions.c expand_token.c rejoin_after_expand.c new_token_for_each_field.c \
ft_split_quotes.c ft_strdup_quotes.c \
redirections.c here_doc.c \
exec_cmd_line.c \
cd.c pwd.c export.c unset.c exit.c env.c echo.c cd.c pwd.c export.c unset.c exit.c env.c echo.c
DIR_OBJS = builds DIR_OBJS = builds

33
headers/minishell_prototypes.h
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@@ -6,7 +6,7 @@
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */ /* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2021/10/08 02:59:58 by lperrey #+# #+# */ /* Created: 2021/10/08 02:59:58 by lperrey #+# #+# */
/* Updated: 2021/11/15 19:23:23 by hulamy ### ########.fr */ /* Updated: 2021/11/16 22:58:35 by lperrey ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
@@ -15,6 +15,10 @@
// Init // Init
int init(t_all *c, char *envp[]); int init(t_all *c, char *envp[]);
char **retrieve_path(char *envp[]);
int set_terminal_attributes(struct termios *ori_termios,
struct termios *interactive_termios,
int *termios_changed); // WIP, TEST, TEMP, PLACEHOLDER, NOT IMPORTANT, :)
int set_signals_handling(struct sigaction *signal_behaviour); int set_signals_handling(struct sigaction *signal_behaviour);
// Shell modes // Shell modes
@@ -25,12 +29,19 @@ void shell_script(t_all *c);
t_token *input_to_tokens(char *input); t_token *input_to_tokens(char *input);
// Parser // Parser
t_cmd **parsing(t_token *token_list, char **envp); t_cmd **parsing(t_token *token_list);
int valid_syntax(t_token *token_list); int valid_syntax(t_token *token_list);
int valid_token(t_token **token_list, enum e_token_id token_id); int valid_token(t_token **token_list, enum e_token_id token_id);
int valid_command_separator(const t_token *token_list); int valid_command_separator(const t_token *token_list);
t_cmd **fill_cmd(t_token *token, char **envp); size_t count_pipes(t_token *token_list);
void cmd_expansion(t_cmd **cmd_arr, char **envp); t_cmd **cmd_array_alloc(size_t cmd_nbr);
int cmd_array_fill_argv(t_token *token_list, t_cmd **cmd_arr);
int words_expansions(t_token *token_list);
int token_expansions(t_token **t);
int redirections(t_token *token_list, t_cmd **cmd_arr);
// Exec
int exec_cmd_line(t_all *c);
// Builtins // Builtins
int builtin_cd(int argc, char *argv[], t_all *c); int builtin_cd(int argc, char *argv[], t_all *c);
@@ -44,6 +55,9 @@ int getenv_position(char **envp, char *name);
// Free // Free
int free_exit(t_all *c, int exit_status); int free_exit(t_all *c, int exit_status);
void free_pipeline(t_cmd **pipeline_ptr[]);
void close_pipeline_fd(t_cmd *pipeline[]);
typedef void (*t_free_f)(void *); // generic
// Generic // Generic
char *ft_strjoinfree(char *s1, char *s2); char *ft_strjoinfree(char *s1, char *s2);
@@ -56,9 +70,16 @@ char **ft_dup_2d_char_arr(char **ptr);
void *ft_resize_2d_arr(void *ptr, size_t add_nbr); void *ft_resize_2d_arr(void *ptr, size_t add_nbr);
void print_matrix(char **matrix, char *sep); void print_matrix(char **matrix, char *sep);
t_list *ft_lstbeforelast(t_list *lst); t_list *ft_lstbeforelast(t_list *lst);
t_list *ft_lstnew_generic(size_t lst_sizse, size_t content_size);
typedef void *(*t_dup_f)(void *);
void *ft_dup_2d_arr(void *ptr, void *(*dup_func)(void *));
void ft_perror_io(char *err_str, char *io_file);
int ft_reti_perror_io(int ret, char *err_str, char *io_file);
char **ft_split_quotes(char const *s, char c);
char *ft_strdup_quotes(const char *s);
// signals.c // signals.c
void sigint_handler_interactiv(int signum); void sigint_handler_interactive(int signum);
void sigint_handler_execution(int signum);
#endif #endif

14
headers/minishell_structs.h
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@@ -6,7 +6,7 @@
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */ /* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2021/10/08 02:35:52 by lperrey #+# #+# */ /* Created: 2021/10/08 02:35:52 by lperrey #+# #+# */
/* Updated: 2021/11/10 17:33:37 by hulamy ### ########.fr */ /* Updated: 2021/11/16 21:38:28 by lperrey ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
@@ -23,7 +23,8 @@ enum e_token_id
T_PIPE = '|', T_PIPE = '|',
T_DLESS, T_DLESS,
T_DGREAT, T_DGREAT,
T_WORD T_WORD,
T_REDIRECTION_WORD
}; };
// T_DLESS == '<<' // T_DLESS == '<<'
// T_DGREAT == '>>' // T_DGREAT == '>>'
@@ -35,21 +36,24 @@ typedef struct s_token
enum e_token_id id; enum e_token_id id;
} t_token; } t_token;
typedef int t_builtin_ptr(int,char **,struct s_all *); typedef int (*t_builtin_f)(int,char **,struct s_all *);
typedef struct s_cmd typedef struct s_cmd
{ {
char **argv; char **argv;
pid_t pid; char *path;
t_builtin_ptr *builtin_command; t_builtin_f builtin_func;
int fd_in; int fd_in;
int fd_out; int fd_out;
pid_t pid;
int error;
} t_cmd; } t_cmd;
typedef struct s_all typedef struct s_all
{ {
t_cmd **cmd_arr; t_cmd **cmd_arr;
char **envp; char **envp;
char **path;
char *prompt_base; char *prompt_base;
char *prompt; char *prompt;
t_token *token_list; t_token *token_list;

183
srcs/exec_cmd_line.c Normal file
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@@ -0,0 +1,183 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* exec_cmd_line.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/16 01:57:38 by lperrey #+# #+# */
/* Updated: 2021/11/17 01:08:38 by lperrey ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
// https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_09_01_01
// Bien penser à mettre les ptr à NULL aprés free en cas d'erreur (pour ne pas double free si appel à free_exit())
int pipeline(t_all *c);
int open_pipes(t_cmd *pipeline[]);
int pipeline_access_cmd(t_cmd *pipeline[], char *path[]);
pid_t pipeline_exec(t_cmd *pipeline[], t_all *c);
int cmd_exec_in_subshell(t_cmd *cmd, t_all *c);
int simple_cmd_builtin(t_cmd *cmd, t_all *c);
void wait_subshell(pid_t last_cmd_pid, int *last_exit_status);
int exec_cmd_line(t_all *c)
{
if (!pipeline(c))
{
free_pipeline(&c->cmd_arr);
return (0);
}
return (1);
}
int pipeline(t_all *c)
{
if (!open_pipes(c->cmd_arr))
return (0);
if (!pipeline_access_cmd(c->cmd_arr, c->path))
return (0);
if (ft_2d_arrlen(pipeline) == 1 && c->cmd_arr[0]->builtin_func)
{
simple_cmd_builtin(c->cmd_arr[0], c);
free_pipeline(&c->cmd_arr);
}
else
{
wait_subshell(pipeline_exec(c->cmd_arr, c), &c->last_exit_status);
free_pipeline(&c->cmd_arr);
}
return (1);
}
int open_pipes(t_cmd *pipeline[])
{
int i;
int pipes[2];
i = 0;
while (pipeline[i] && pipeline[i + 1])
{
if (pipe(pipes) == -1)
return (ft_reti_perror(0, "pipe()"));
if (pipeline[i]->fd_out == STDOUT_FILENO)
pipeline[i]->fd_out = pipes[STDOUT_FILENO];
else
if (close(pipes[STDOUT_FILENO]) == -1)
perror("close()");
if (pipeline[i]->fd_in == STDIN_FILENO)
pipeline[i + 1]->fd_in = pipes[STDIN_FILENO];
else
if (close(pipes[STDIN_FILENO]) == -1)
perror("close()");
i++;
}
return (1);
}
int pipeline_access_cmd(t_cmd *pipeline[], char *path[])
{
// TODO
// Penser à : path = strdup(argv[0]);
// et non : path = argv[0];
// pour ne pas double free
return (1);
}
int simple_cmd_builtin(t_cmd *cmd, t_all *c)
{
// TODO
return (1);
}
// TODO : Change exit status as in documentation :
// https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_08_02
pid_t pipeline_exec(t_cmd *pipeline[], t_all *c)
{
int i;
int ret;
i = 0;
while (pipeline[i])
{
if (!pipeline[i]->error)
{
ret = cmd_exec_in_subshell(pipeline[i], c);
if (ret != EXIT_SUCCESS)
free_exit(c, ret);
}
i++;
}
close_pipeline_fd(c->cmd_arr);
i -= 1;
if (pipeline[i]->error)
c->last_exit_status = pipeline[i]->error;
return (pipeline[i]->pid);
}
int handle_wait_error(void)
{
if (errno == ECHILD)
return (-1);
else if (errno == EINTR)
return (0);
else
perror("wait()");
return (-1);
}
void wait_subshell(pid_t last_cmd_pid, int *last_exit_status)
{
int wstatus;
int ret;
//wstatus = 0;
if (last_cmd_pid > 0)
{
if (waitpid(last_cmd_pid, &wstatus, 0) == -1)
perror("waitpid()");
if (WIFEXITED(wstatus))
*last_exit_status = WEXITSTATUS(wstatus);
}
ret = 0;
while (ret != -1)
{
ret = wait(&wstatus);
if (ret == -1)
ret = handle_wait_error();
}
if (WIFSIGNALED(wstatus))
{
write(STDIN_FILENO, "\n", 1);
*last_exit_status = 128 + WTERMSIG(wstatus);
}
}
int cmd_exec_in_subshell(t_cmd *cmd, t_all *c)
{
cmd->pid = fork();
if (cmd->pid == -1)
perror("fork()");
if (cmd->pid == 0)
{
c->signal_behaviour.sa_handler = SIG_DFL;
sigaction(SIGINT, &c->signal_behaviour, NULL);
if (cmd->fd_in != STDIN_FILENO)
if (dup2(cmd->fd_in, STDIN_FILENO) == -1)
return (ft_reti_perror(EXIT_FAILURE, "dup2()"));
if (cmd->fd_out != STDOUT_FILENO)
if (dup2(cmd->fd_out, STDOUT_FILENO) == -1)
return (ft_reti_perror(EXIT_FAILURE, "dup2()"));
close_pipeline_fd(c->cmd_arr);
if (cmd->builtin_func)
free_exit(c, cmd->builtin_func(ft_2d_arrlen(cmd->argv), cmd->argv,c));
else if (execve("/bin/echo", cmd->argv, c->envp) == -1) // WIP, TEST
return (ft_reti_perror_io(EXIT_FAILURE, "execve() ", cmd->argv[0]));
//else if (execve(cmd->path, cmd->argv, c->envp) == -1)
// return (ft_reti_perror_io(EXIT_FAILURE, "execve() ", cmd->argv[0]));
}
return (EXIT_SUCCESS);
}

53
srcs/free.c
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@@ -6,7 +6,7 @@
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */ /* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2021/10/10 23:53:17 by lperrey #+# #+# */ /* Created: 2021/10/10 23:53:17 by lperrey #+# #+# */
/* Updated: 2021/11/10 17:15:44 by hulamy ### ########.fr */ /* Updated: 2021/11/17 01:25:35 by lperrey ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
@@ -18,8 +18,55 @@ int free_exit(t_all *c, int exit_status)
free(c->prompt); free(c->prompt);
ft_lstclear((t_list **)&c->token_list, free); // a voir avec Hugo, il y a un truc qui me semble superflu dans la fonction ft_lstclear((t_list **)&c->token_list, free); // a voir avec Hugo, il y a un truc qui me semble superflu dans la fonction
ft_free_2d_arr(c->envp); ft_free_2d_arr(c->envp);
// if (c->termios_changed) ft_free_2d_arr(c->path);
// tcsetattr(STDIN_FILENO, TCSANOW, &c->ori_termios); free_pipeline(&c->cmd_arr);
//if (c->termios_changed)
// tcsetattr(STDIN_FILENO, TCSANOW, &c->ori_termios);
rl_clear_history(); rl_clear_history();
exit(exit_status); exit(exit_status);
} }
void free_pipeline(t_cmd **pipeline_ptr[])
{
int i;
t_cmd **pipeline;
pipeline = *pipeline_ptr;
if (!pipeline)
return ;
close_pipeline_fd(pipeline);
i = 0;
while (pipeline[i])
{
ft_free_2d_arr(pipeline[i]->argv);
free(pipeline[i]->path);
i++;
}
ft_free_2d_arr(pipeline);
*pipeline_ptr = NULL;
}
void close_pipeline_fd(t_cmd *pipeline[])
{
int i;
if (!pipeline)
return ;
i = 0;
while (pipeline[i])
{
if (pipeline[i]->fd_in != STDIN_FILENO && pipeline[i]->fd_in > 0)
{
if (close(pipeline[i]->fd_in) == -1)
perror("close()");
pipeline[i]->fd_in = 0;
}
if (pipeline[i]->fd_out != STDOUT_FILENO && pipeline[i]->fd_out > 0)
{
if (close(pipeline[i]->fd_out) == -1)
perror("close()");
pipeline[i]->fd_out = 0;
}
i++;
}
}

64
srcs/generic.c
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@@ -6,7 +6,7 @@
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */ /* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2021/10/08 09:25:35 by lperrey #+# #+# */ /* Created: 2021/10/08 09:25:35 by lperrey #+# #+# */
/* Updated: 2021/11/02 13:52:23 by hulamy ### ########.fr */ /* Updated: 2021/11/14 08:27:40 by lperrey ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
@@ -85,7 +85,7 @@ size_t ft_2d_arrlen(void *ptr) // Replace ft_arrlen()
return (len); return (len);
} }
char **ft_dup_2d_char_arr(char **ptr) char **ft_dup_2d_char_arr(char **ptr) // Superflu si ft_dup_2d_arr() fonctionne
{ {
unsigned int i; unsigned int i;
char **arr; char **arr;
@@ -107,6 +107,29 @@ char **ft_dup_2d_char_arr(char **ptr)
return (new_arr); return (new_arr);
} }
// Test generic. Pas certain que ça fonctionne bien avec le pointeur sur fonction
void *ft_dup_2d_arr(void *ptr, void *(*dup_func)(void *))
{
unsigned int i;
char **arr;
char **new_arr;
new_arr = malloc((ft_2d_arrlen(ptr) + 1) * sizeof (void *));
if (!new_arr)
return (NULL);
arr = (char **)ptr;
i = 0;
while (arr[i])
{
new_arr[i] = dup_func(arr[i]);
if (!new_arr[i])
return (ft_retp_free(NULL, new_arr, ft_free_2d_arr));
i++;
}
new_arr[i] = NULL;
return (new_arr);
}
void *ft_resize_2d_arr(void *ptr, size_t add_nbr) void *ft_resize_2d_arr(void *ptr, size_t add_nbr)
{ {
unsigned int i; unsigned int i;
@@ -150,3 +173,40 @@ t_list *ft_lstbeforelast(t_list *lst)
lst = lst->next; lst = lst->next;
return (lst); return (lst);
} }
t_list *ft_lstnew_generic(size_t lst_size, size_t content_size)
{
t_list *elem;
void *content;
if (content_size == 0)
content = NULL;
else
{
content = ft_calloc(content_size, 1);
if (!content)
return (NULL);
}
elem = ft_calloc(1, lst_size);
if (!elem)
{
free(content);
return (NULL);
}
elem->content = content;
elem->next = NULL;
return (elem);
}
void ft_perror_io(char *err_str, char *io_file)
{
ft_putstr_fd(err_str, 2);
perror(io_file);
}
int ft_reti_perror_io(int ret, char *err_str, char *io_file)
{
ft_putstr_fd(err_str, 2);
perror(io_file);
return (ret);
}

27
srcs/init.c
View File

@@ -6,7 +6,7 @@
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */ /* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2021/10/08 09:22:12 by lperrey #+# #+# */ /* Created: 2021/10/08 09:22:12 by lperrey #+# #+# */
/* Updated: 2021/11/10 13:43:59 by hulamy ### ########.fr */ /* Updated: 2021/11/16 21:06:18 by lperrey ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
@@ -19,9 +19,11 @@ int init(t_all *c, char *envp[])
{ {
g_all = c; g_all = c;
ft_bzero(c, sizeof (*c)); ft_bzero(c, sizeof (*c));
c->envp = ft_dup_2d_char_arr(envp); c->envp = ft_dup_2d_arr(envp, (t_dup_f)ft_strdup); // TEST WIP
if (!c->envp) if (!c->envp)
return (ft_reti_perror(0, "ft_dup_2d_char_arr(envp) error")); return (ft_reti_perror(0, "ft_dup_2d_char_arr(envp) error"));
//print_matrix(c->envp, "\n --- \n"); // TEST WIP
c->path = retrieve_path(c->envp); // No return check. Its intended. PATH is optional
c->prompt_base = init_prompt_base(); c->prompt_base = init_prompt_base();
if (!c->prompt_base) if (!c->prompt_base)
return (ft_reti_perror(0, "init_prompt_base() error")); return (ft_reti_perror(0, "init_prompt_base() error"));
@@ -32,7 +34,24 @@ int init(t_all *c, char *envp[])
return (1); return (1);
} }
static char *init_prompt_base(void) // TODO : Un appel à builtin_export() modifiant $PATH doit aussi entrainer un appel à "c->path = retrieve_path()"
char **retrieve_path(char *envp[])
{
char *path;
char **path_split;
(void)envp;
//path = search_env_var(envp, "PATH"); // A reprendre du projet pipex si besoin de remplacer getenv()
path = getenv("PATH");
if (!path)
return (ft_retp_print(NULL, "minishell: Warning, $PATH not set\n", 2));
path_split = ft_split(path, ':');
if (!path_split)
return (ft_retp_perror(NULL, "retrieve_path()"));
return (path_split);
}
static char *init_prompt_base(void) // WIP, error return TODO
{ {
char *prompt_base; char *prompt_base;
char *tmp; char *tmp;
@@ -52,7 +71,7 @@ static char *init_prompt_base(void)
return (prompt_base); return (prompt_base);
} }
static char *init_prompt(char *prompt_base) static char *init_prompt(char *prompt_base) // WIP, error return TODO
{ {
char *prompt; char *prompt;

6
srcs/lexing/lexing.c
View File

@@ -6,7 +6,7 @@
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */ /* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2021/10/19 08:38:55 by lperrey #+# #+# */ /* Created: 2021/10/19 08:38:55 by lperrey #+# #+# */
/* Updated: 2021/10/30 22:37:48 by lperrey ### ########.fr */ /* Updated: 2021/11/07 03:18:38 by lperrey ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
@@ -14,7 +14,7 @@
int fill_token(t_token *t, char *input, int *i, int *t_i); int fill_token(t_token *t, char *input, int *i, int *t_i);
static t_token *alloc_token(size_t content_len); static t_token *alloc_token(size_t content_len); // TODO, a remplacer par ft_lstnew_generic()
static int tokenize_input(t_token *t, char *input, size_t input_len); static int tokenize_input(t_token *t, char *input, size_t input_len);
t_token *input_to_tokens(char *input) t_token *input_to_tokens(char *input)
@@ -30,7 +30,7 @@ t_token *input_to_tokens(char *input)
if (!tokenize_input(t_head, input, input_len)) if (!tokenize_input(t_head, input, input_len))
return (ft_lstclear((t_list **)&t_head, free)); return (ft_lstclear((t_list **)&t_head, free));
t_tmp = (t_token *)ft_lstbeforelast((t_list *)t_head); t_tmp = (t_token *)ft_lstbeforelast((t_list *)t_head);
if (t_tmp && !t_tmp->next->id) if (t_tmp && t_tmp->next && !t_tmp->next->id)
{ {
ft_lstdelone((t_list *)t_tmp->next, free); ft_lstdelone((t_list *)t_tmp->next, free);
t_tmp->next = NULL; t_tmp->next = NULL;

9
srcs/main.c
View File

@@ -6,7 +6,7 @@
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */ /* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2021/10/04 05:59:26 by lperrey #+# #+# */ /* Created: 2021/10/04 05:59:26 by lperrey #+# #+# */
/* Updated: 2021/11/02 14:03:31 by hulamy ### ########.fr */ /* Updated: 2021/11/08 04:05:41 by lperrey ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
@@ -20,9 +20,10 @@ int main(int argc, char *argv[], char *envp[])
(void)argv; (void)argv;
if (!init(&c, envp)) if (!init(&c, envp))
free_exit(&c, EXIT_FAILURE); free_exit(&c, EXIT_FAILURE);
if (isatty(STDIN_FILENO)) putenv("VAR=W1 W2 W3"); // TEMP TEST
//if (isatty(STDIN_FILENO))
shell_loop(&c); shell_loop(&c);
else //else
shell_script(&c); // shell_script(&c);
return (0); return (0);
} }

189
srcs/parsing/HUGO_WIP.c Normal file
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@@ -0,0 +1,189 @@
#include "minishell.h"
int is_redirection(enum e_token_id id)
{
if (id == T_LESS) // <
return (1);
else if (id == T_GREAT) // >
return (1);
else if (id == T_DLESS) // <<
return (1);
else if (id == T_DGREAT) // >>
return (1);
else
return (0);
}
// count nbr word in cmd, minus redirection and heredoc
int next_cmd(t_token *token)
{
int i;
i = 0;
while (token && token->id != T_PIPE)
{
if (is_redirection(token->id))
i--;
else
i++;
token = token->next;
}
if (token && token->id == T_PIPE)
token = token->next;
return (i);
}
void handle_argv(t_token *token, t_cmd **cmd, size_t cmd_nbr)
{
int argc;
int j;
int i;
int redirection;
i = 0;
while (cmd_nbr)
{
argc = next_cmd(token);
cmd[i]->argv = calloc(argc + 1, sizeof(char *));
cmd[i]->argv[argc] = NULL;
j = 0;
redirection = is_redirection(token->id);
while (token && token->id != T_PIPE)
{
if (!redirection && token->id == T_WORD)
{
cmd[i]->argv[j] = ft_strdup(token->content);
j++;
}
redirection = is_redirection(token->id);
token = token->next;
}
if (token && token->id == T_PIPE)
token = token->next;
cmd_nbr--;
i++;
}
}
int fill_builtin(t_cmd *cmd, int (*builtin)(int, char **, t_all *))
{
cmd->builtin_command = &builtin;
return (1);
}
int handle_builtin(t_cmd *cmd)
{ // Il faut penser à comparer un char de plus (\0 inclus)
if (!ft_strncmp(cmd->argv[0], "echo", 4))
return (fill_builtin(cmd, &builtin_echo));
// else if (!ft_strncmp(cmd->argv[0], "cd", 2))
// return (fill_builtin(cmd, &builtin_cd));
// else if (!ft_strncmp(cmd->argv[0], "pwd", 3))
// return (fill_builtin(cmd, &builtin_pwd));
// else if (!ft_strncmp(cmd->argv[0], "export", 6))
// return (fill_builtin(cmd, &builtin_export));
// else if (!ft_strncmp(cmd->argv[0], "unset", 5))
// return (fill_builtin(cmd, &builtin_unset));
else if (!ft_strncmp(cmd->argv[0], "env", 3))
return (fill_builtin(cmd, &builtin_env));
else if (!ft_strncmp(cmd->argv[0], "exit", 4))
return (fill_builtin(cmd, &builtin_exit));
return (0);
}
void find_path(char **argv, char **envp)
{
int i;
char **path;
char *cmd;
i = 0;
while (envp[i] && ft_strncmp(envp[i], "PATH=", 5))
i++;
path = ft_split(envp[i] + 5, ':'); // 5 = lentgh of "PATH="
i = -1;
while (*path && i != 0)
{
cmd = ft_strjoin(path[0], "/");
cmd = ft_strjoin(cmd, argv[0]);
i = access(cmd, X_OK);
path++;
}
if (!(*path))
exit(0); // gerer erreur
argv[0] = cmd;
}
void handle_path(t_cmd **cmd_arr, char **envp)
{
int i;
i = 0;
while (cmd_arr[i])
{
if (!handle_builtin(cmd_arr[i]))
find_path(cmd_arr[i]->argv, envp);
i++;
}
}
void fd_redirection(t_token *token, t_cmd *cmd)
{
int flag;
if (token->id == T_LESS) // '<'
{
flag = O_RDONLY | O_CREAT; // O_CREAT ? Pourquoi donc ?
if (cmd->fd_in != 0)
close(cmd->fd_in);
cmd->fd_in = open(token->next->content, flag);
}
else if (token->id == T_GREAT) // '>'
{
flag = O_WRONLY | O_CREAT | O_TRUNC;
cmd->fd_out = open(token->next->content, flag, S_IRWXU);
}
else if (token->id == T_DGREAT) // '>>'
{
flag = O_WRONLY | O_CREAT | O_APPEND;
cmd->fd_out = open(token->next->content, flag, S_IRWXU);
}
}
void fd_heredoc(t_token *token, t_cmd *cmd)
{
(void)token;
(void)cmd;
}
void handle_fd(t_token *token, t_cmd **cmd_arr)
{
int *pipes_fd;
int i;
i = 0;
while (cmd_arr[i])
{
cmd_arr[i]->fd_out = 1;
while (token && token->id != T_PIPE)
{
if (token->id == T_DGREAT) // '<<'
fd_heredoc(token, cmd_arr[i]);
else
fd_redirection(token, cmd_arr[i]);
token = token->next;
}
if (token && token->id == T_PIPE)
{
token = token->next;
pipes_fd = calloc(2, sizeof(int));
pipe(pipes_fd);
if (cmd_arr[i]->fd_out == 1)
cmd_arr[i]->fd_out = pipes_fd[1];
else
close(pipes_fd[1]);
cmd_arr[i + 1]->fd_in = pipes_fd[0];
}
i++;
}
}

95
srcs/parsing/cmd_array.c Normal file
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@@ -0,0 +1,95 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* cmd_array.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/02 22:46:23 by lperrey #+# #+# */
/* Updated: 2021/11/14 12:24:39 by lperrey ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
static size_t cmd_words_count(t_token *t);
size_t count_pipes(t_token *t)
{
size_t count;
count = 0;
while (t)
{
if (t->id == T_PIPE)
count++;
t = t->next;
}
return (count);
}
t_cmd **cmd_array_alloc(size_t cmd_nbr)
{
t_cmd **cmd_arr;
size_t i;
cmd_arr = ft_calloc(cmd_nbr + 1, sizeof (void *));
if (!cmd_arr)
return (ft_retp_perror(NULL, "cmd_array_alloc()"));
i = 0;
while (i < cmd_nbr)
{
cmd_arr[i] = ft_calloc(1, sizeof (*cmd_arr[i]));
if (!cmd_arr[i])
{
ft_free_2d_arr(cmd_arr);
return (ft_retp_perror(NULL, "cmd_array_alloc()"));
}
cmd_arr[i]->fd_in = STDIN_FILENO;
cmd_arr[i]->fd_out = STDOUT_FILENO;
i++;
}
return (cmd_arr);
}
int cmd_array_fill_argv(t_token *t, t_cmd **cmd_arr)
{
size_t i;
size_t arg_i;
i = 0;
while (cmd_arr[i])
{
cmd_arr[i]->argv = ft_calloc(cmd_words_count(t) + 1, sizeof (char *));
if (!cmd_arr[i]->argv)
return (ft_reti_perror(0, "cmd_array_fill_argv()"));
arg_i = 0;
while (t && t->id != '|')
{
if (t->id == T_WORD)
{
cmd_arr[i]->argv[arg_i++] = t->content;
t->content = NULL;
}
t = t->next;
}
if (t && t->id == '|')
t = t->next;
i++;
}
return (1);
}
static size_t cmd_words_count(t_token *t)
{
size_t count;
count = 0;
while (t && t->id != '|')
{
if (t->id == T_WORD)
count++;
t = t->next;
}
return (count);
}

116
srcs/parsing/expansions/expand_token.c Normal file
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@@ -0,0 +1,116 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* expand_token.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/07 02:01:33 by lperrey #+# #+# */
/* Updated: 2021/11/11 21:04:41 by lperrey ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
t_list *ft_lstnew_generic(size_t lst_sizse, size_t content_size);
enum e_in_quote_state
{
NOT_IN = 0,
IN_QUOTES = '\'',
IN_DQUOTES = '\"'
};
static t_list *ret_parameter_expansion(char *content, int *i);
t_list *expand_token(char *content)
{
int in_quotes;
int i;
int i_exp;
t_list head;
t_list *expand;
in_quotes = 0;
i = 0;
head.next = NULL;
expand = &head;
while (content[i])
{
if (content[i] == '$')
{
expand->next = ret_parameter_expansion(content, &i);
expand = expand->next;
if (!expand)
{//todo wrap
perror("expand_token() error");
return (ft_lstclear(&head.next, free));
}
}
else
{
expand->next = ft_lstnew_generic(sizeof(t_list), ft_strlen(&content[i]) + 1);
expand = expand->next;
i_exp = 0;
if (!expand)
{//todo wrap
perror("expand_token() error");
return (ft_lstclear(&head.next, free));
}
while (content[i] && (content[i] != '$' || 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++];
}
}
}
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)
{
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));
(*i)++; // skip '$'
if (content[*i] == '?')
{
(*i)++;
expand->content = ft_itoa(g_all->last_exit_status);
return (ft_retp_free(expand, tmp, free));
}
else if (content[*i] != '_' && !ft_isalpha(content[*i]))
{
tmp[0] = '$';
expand->content = tmp;
return (expand);
}
i_tmp = 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);
else
expand->content = ft_calloc(1, 1);
if (!expand->content)
return (ft_retp_free(NULL, expand, free));
return (expand);
}

106
srcs/parsing/expansions/ft_split_MODIF.c Normal file
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@@ -0,0 +1,106 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_split_MODIF.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/13 07:08:40 by lperrey #+# #+# */
/* Updated: 2021/11/13 20:24:33 by lperrey ### ########.fr */
/* */
/* ************************************************************************** */
// FT_SPLIT LEGEREMENT REMANIER.
// A REMPLACER DANS LA LIBFT
#include "libft.h"
static size_t count_word(char const *s, char c);
static char **alloc_words(char const *s, char c, char **str_arr,
size_t words_count);
static void fill_arr(char const *s, char c, char **str_arr);
char **ft_split(char const *s, char c)
{
char **str_arr;
size_t words_count;
if (s == NULL)
return (NULL);
words_count = count_word(s, c);
str_arr = ft_calloc(words_count + 1, sizeof(char *));
if (!str_arr)
return (NULL);
if (!(alloc_words(s, c, str_arr, words_count)))
{
ft_free_2d_arr(str_arr);
return (NULL);
}
fill_arr(s, c, str_arr);
return (str_arr);
}
static size_t count_word(char const *s, char c)
{
unsigned int i;
size_t count;
count = 0;
i = 0;
while (s[i])
{
while (s[i] == c)
i++;
if (s[i])
count++;
while (s[i] && s[i] != c)
i++;
}
return (count);
}
static char **alloc_words(char const *s, char c, char **str_arr,
size_t words_count)
{
unsigned int i;
size_t len;
unsigned int arr_i;
i = 0;
arr_i = 0;
while (arr_i < words_count)
{
len = 0;
while (s[i] == c)
i++;
while (s[i] && s[i] != c)
{
len++;
i++;
}
str_arr[arr_i] = malloc(len + 1);
if (!str_arr[arr_i])
return (NULL);
arr_i++;
}
return (str_arr);
}
static void fill_arr(char const *s, char c, char **str_arr)
{
unsigned int i;
unsigned int arr_i;
unsigned int char_i;
i = 0;
arr_i = 0;
while (str_arr[arr_i])
{
while (s[i] == c)
i++;
char_i = 0;
while (s[i] && s[i] != c)
str_arr[arr_i][char_i++] = s[i++];
str_arr[arr_i][char_i] = '\0';
arr_i++;
}
}

186
srcs/parsing/expansions/ft_split_quotes.c Normal file
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@@ -0,0 +1,186 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_split_quotes.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/13 07:08:40 by lperrey #+# #+# */
/* Updated: 2021/11/13 22:35:34 by lperrey ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
enum e_in_quote_state
{
NOT_IN = 0,
IN_QUOTES = '\'',
IN_DQUOTES = '\"'
};
static size_t count_word(char const *s, char c);
static char **alloc_words(char const *s, char c, char **str_arr,
size_t words_count);
static void fill_arr(char const *s, char c, char **str_arr);
static int quote_state_change(int *quote_state, const char *s);
char **ft_split_quotes(char const *s, char c)
{
char **str_arr;
size_t words_count;
if (s == NULL)
return (NULL);
words_count = count_word(s, c);
str_arr = ft_calloc(words_count + 1, sizeof(char *));
if (!str_arr)
return (NULL);
if (!(alloc_words(s, c, str_arr, words_count)))
{
ft_free_2d_arr(str_arr);
return (NULL);
}
fill_arr(s, c, str_arr);
return (str_arr);
}
static size_t count_word(char const *s, char c)
{
unsigned int i;
size_t count;
int quote_state;
i = 0;
count = 0;
quote_state = 0;
while (s[i])
{
while (s[i] == c)
i++;
if (s[i])
count++;
while (s[i] && (s[i] != c || quote_state))
{
while (quote_state_change(&quote_state, &s[i]))
i++;
if (s[i] && (s[i] != c || quote_state))
i++;
}
}
return (count);
}
static char **alloc_words(char const *s, char c, char **str_arr,
size_t words_count)
{
unsigned int i;
size_t len;
unsigned int arr_i;
int quote_state;
i = 0;
arr_i = 0;
quote_state = 0;
while (arr_i < words_count)
{
len = 0;
while (s[i] == c)
i++;
while (s[i + len]
&& (quote_state_change(&quote_state, &s[i + len])
|| (s[i + len] != c || quote_state)))
len++;
i = i + len;
str_arr[arr_i] = ft_calloc(len + 1, 1);
if (!str_arr[arr_i])
return (NULL);
arr_i++;
}
return (str_arr);
}
// Plus clair, plus de 25 lignes :(
/* static char **alloc_words(char const *s, char c, char **str_arr,
size_t words_count)
{
unsigned int i;
size_t len;
unsigned int arr_i;
int quote_state;
i = 0;
arr_i = 0;
quote_state = 0;
while (arr_i < words_count)
{
len = 0;
while (s[i] == c)
i++;
while (s[i + len] && (s[i + len] != c || quote_state))
{
while (quote_state_change(&quote_state, &s[i + len]))
len++;
if (s[i + len] != c || quote_state)
len++;
}
i = i + len;
str_arr[arr_i] = ft_calloc(len + 1, 1);
if (!str_arr[arr_i])
return (NULL);
arr_i++;
}
return (str_arr);
} */
static void fill_arr(char const *s, char c, char **str_arr)
{
unsigned int i;
unsigned int arr_i;
unsigned int char_i;
int quote_state;
i = 0;
arr_i = 0;
quote_state = 0;
while (str_arr[arr_i])
{
while (s[i] == c)
i++;
char_i = 0;
while (s[i] && (s[i] != c || quote_state))
{
while (quote_state_change(&quote_state, &s[i]))
str_arr[arr_i][char_i++] = s[i++];
if (s[i] && (s[i] != c || quote_state))
str_arr[arr_i][char_i++] = s[i++];
}
str_arr[arr_i][char_i] = '\0'; //superflu si ft_calloc
arr_i++;
}
}
static int quote_state_change(int *quote_state, const char *s)
{
if (s[0] == '\'' && *quote_state != IN_DQUOTES)
{
if (*quote_state == IN_QUOTES)
*quote_state = 0;
else if (ft_strchr(&s[1], '\'')) // if closed quotes
*quote_state = IN_QUOTES;
else
return (0);
return (1);
}
else if (s[0] == '\"' && *quote_state != IN_QUOTES)
{
if (*quote_state == IN_DQUOTES)
*quote_state = 0;
else if (ft_strchr(&s[1], '\"')) // if closed quotes
*quote_state = IN_DQUOTES;
else
return (0);
return (1);
}
return (0);
}

70
srcs/parsing/expansions/ft_strdup_quotes.c Normal file
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@@ -0,0 +1,70 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strdup_quotes.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/13 04:35:06 by lperrey #+# #+# */
/* Updated: 2021/11/14 06:01:45 by lperrey ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
enum e_in_quote_state
{
NOT_IN = 0,
IN_QUOTES = '\'',
IN_DQUOTES = '\"'
};
static int quote_state_change(int *quote_state, const char *s);
/* Duplicate a string minus the quoting characters ['] and ["]*/
char *ft_strdup_quotes(const char *s)
{
unsigned int i;
unsigned int i_dup;
char *dup;
int quote_state;
dup = ft_calloc(ft_strlen(s) + 1, 1);
if (!dup)
return (NULL);
i = 0;
i_dup = 0;
quote_state = 0;
while (s[i])
{
while (quote_state_change(&quote_state, &s[i]))
i++;
if (s[i])
dup[i_dup++] = s[i++];
}
return (dup);
}
static int quote_state_change(int *quote_state, const char *s)
{
if (s[0] == '\'' && *quote_state != IN_DQUOTES)
{
if (*quote_state == IN_QUOTES)
*quote_state = 0;
else if (ft_strchr(&s[1], '\'')) // if closed quotes
*quote_state = IN_QUOTES;
else
return (0);
return (1);
}
else if (s[0] == '\"' && *quote_state != IN_QUOTES)
{
if (*quote_state == IN_DQUOTES)
*quote_state = 0;
else if (ft_strchr(&s[1], '\"')) // if closed quotes
*quote_state = IN_DQUOTES;
else
return (0);
return (1);
}
return (0);
}

69
srcs/parsing/expansions/new_token_for_each_field.c Normal file
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@@ -0,0 +1,69 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* new_token_for_each_field.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/07 02:01:33 by lperrey #+# #+# */
/* Updated: 2021/11/07 04:33:04 by lperrey ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
t_list *ft_lstnew_generic(size_t lst_sizse, size_t content_size);
static t_token *insert_tokens(t_token *t, t_token *insert_lst);
int new_token_for_each_field(char **fields, t_token **t)
{
t_token head;
t_token *insert_lst;
int i;
head.next = NULL;
insert_lst = &head;
i = 0;
while (fields[i])
{
if (fields[i][0])
{
insert_lst->next = (t_token *)ft_lstnew_generic(sizeof(t_token), 0);
insert_lst = insert_lst->next;
if (!insert_lst)
{//todo wrap
perror("insert_token_for_each_field() error");
ft_free_2d_arr(fields);
return ((int)ft_lstclear((t_list **)&head.next, NULL));
}
insert_lst->content = fields[i];
insert_lst->id = T_WORD;
}
else
free(fields[i]);
i++;
}
free(fields);
*t = insert_tokens(*t, head.next);
return (1);
}
static t_token *insert_tokens(t_token *t, t_token *insert_lst)
{
t_token *tmp;
t_token *insert_lst_last;
t->id = 0;
free(t->content);
t->content = NULL;
if (!insert_lst)
return (t);
tmp = t->next;
t->next = insert_lst;
insert_lst_last = (t_token *)ft_lstlast((t_list *)insert_lst);
insert_lst_last->next = tmp;
return (insert_lst_last);
}

39
srcs/parsing/expansions/rejoin_after_expand.c Normal file
View File

@@ -0,0 +1,39 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* rejoin_after_expand.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/07 02:01:33 by lperrey #+# #+# */
/* Updated: 2021/11/07 04:03:02 by lperrey ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
char *rejoin_after_expand(t_list *expand_lst)
{
t_list *head;
char *result;
head = expand_lst;
result = ft_calloc(1, 1);
if (!result)
{//todo wrap
perror("rejoin_after_expand() error");
return (ft_lstclear(&head, free));
}
while (expand_lst)
{
result = ft_strjoinfree_s1(result, expand_lst->content);
if (!result)
{//todo wrap
perror("rejoin_after_expand() error");
return (ft_lstclear(&head, free));
}
expand_lst = expand_lst->next;
}
ft_lstclear(&head, free);
return (result);
}

75
srcs/parsing/expansions/words_expansions.c Normal file
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@@ -0,0 +1,75 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* words_expansions.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/07 02:01:33 by lperrey #+# #+# */
/* Updated: 2021/11/16 03:45:15 by lperrey ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
enum e_in_quote_state
{
NOT_IN = 0,
IN_QUOTES = '\'',
IN_DQUOTES = '\"'
};
t_list *ft_lstnew_generic(size_t lst_sizse, size_t content_size);
t_list *expand_token(char *content);
char *rejoin_after_expand(t_list *expand_lst);
int new_token_for_each_field(char **fields, t_token **t);
// 1 - chaque bout dans un element d'une t_list
// (telle quelle si non expand, ou VARIABLE de env)
// 2 - strjoin() le tout
// 3 - split avec un ft_strplit() modifié (ne splitant pas dans les quotes)
// 4 - quotes removal, ft_strdup_quotes() le tableau split
// 5 - creer un token T_WORD pour chaque *string du **split_arr
// (ft_lstadd_front() sur le token original, puis set le token orignal à :
// t->id = 0 ; free(t->content) ; t->content = NULL ; pour qu'il soit ignoré sur la suite du parsing)
int words_expansions(t_token *token_list)
{
while (token_list)
{
if (token_list->id == T_WORD)
token_expansions(&token_list);
token_list = token_list->next;
}
return (1);
}
int token_expansions(t_token **t)
{
void *tmp;
char **tmp_split;
// 1
tmp = expand_token((*t)->content);
if (!tmp)
return (0);
// 2
tmp = rejoin_after_expand(tmp);
if (!tmp)
return (0);
// 3
tmp_split = ft_split_quotes(tmp, ' ');
free(tmp);
if (!tmp_split)
return (0);
// 4
tmp = ft_dup_2d_arr(tmp_split, (t_dup_f)ft_strdup_quotes);
ft_free_2d_arr(tmp_split);
tmp_split = tmp;
if (!tmp_split)
return (0);
// 5
if (!new_token_for_each_field(tmp_split, t))
return (0);
return (1);
}

305
srcs/parsing/parsing.c
View File

@@ -6,261 +6,92 @@
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */ /* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2021/10/24 10:52:40 by lperrey #+# #+# */ /* Created: 2021/10/24 10:52:40 by lperrey #+# #+# */
/* Updated: 2021/11/11 13:11:55 by hulamy ### ########.fr */ /* Updated: 2021/11/16 21:18:27 by lperrey ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
#include "minishell.h" #include "minishell.h"
size_t count_pipes(t_token *token); // HUGO WIP
t_cmd **create_cmd(t_token *token_list, size_t cmd_nbr);
void handle_argv(t_token *token, t_cmd **cmd, size_t cmd_nbr);
void handle_path(t_cmd **cmd_arr, char **envp); void handle_path(t_cmd **cmd_arr, char **envp);
void handle_fd(t_token *token, t_cmd **cmd_arr);
void fd_heredoc(t_token *token, t_cmd *cmd);
void fd_redirection(t_token *token, t_cmd *cmd);
void find_path(char **argv, char **envp); void find_path(char **argv, char **envp);
int handle_builtin(t_cmd *cmd); int handle_builtin(t_cmd *cmd);
int fill_builtin(t_cmd *cmd, int (*builtin)(int, char **, t_all *)); int fill_builtin(t_cmd *cmd, int (*builtin)(int, char **, t_all *));
int next_cmd(t_token *token); // HUGO WIP
int is_redirection(enum e_token_id id);
t_cmd **parsing(t_token *token_list, char **envp) void save_redirections_words(t_token *t)
{
while (t)
{
if (t->id == '>' || t->id == T_DGREAT
|| t->id == '<' || t->id == T_DLESS)
{
t = t->next;
t->id = T_REDIRECTION_WORD;
}
t = t->next;
}
}
void print_cmd_array(t_cmd **cmd_arr)
{
int i;
i = 0;
while (cmd_arr[i])
{
printf("CMD %i, fd_in=%i, fd_out=%i\n", i, cmd_arr[i]->fd_in, cmd_arr[i]->fd_out);
ft_putstr_fd(" |", 1);
print_matrix(cmd_arr[i]->argv, "|\n |");
i++;
if (cmd_arr[i])
ft_putstr_fd("----------------\n", 1);
}
}
t_cmd **parsing(t_token *token_list)
{ {
t_cmd **cmd_arr; t_cmd **cmd_arr;
size_t cmd_nbr;
if (!valid_syntax(token_list)) if (!valid_syntax(token_list))
return (NULL); return (NULL);
cmd_nbr = count_pipes(token_list);
cmd_arr = create_cmd(token_list, cmd_nbr); // 2.9.1 - 1) Save Words
// cmd_expansion(cmd_arr, envp); save_redirections_words(token_list);
handle_argv(token_list, cmd_arr, cmd_nbr);
handle_path(cmd_arr, envp); // 2.9.1 - 2) Expansion
handle_fd(token_list, cmd_arr); // TEST TOKENS PRINT
//ft_putstr_fd("TOKENS LIST :\n-----------\n", 1);
//ft_lstprint((t_list *)token_list, 1);
//
// getenv() ne va pas fonctionner avec le changement d'environnement prévu jusqu'ici.
// TODO : Revoir le changement d'environnement (avec extern char **environ ?)
// OU Integrer un equivalent perso comme dans pipex
if (!words_expansions(token_list))
return (NULL);
//
//ft_putstr_fd("TOKENS LIST EXPANDED :\n-----------\n", 1);
//ft_lstprint((t_list *)token_list, 1);
// Struct CMD alloc
cmd_arr = cmd_array_alloc(1 + count_pipes(token_list));
if (!cmd_arr)
return (NULL);
// 2.9.1 - 3) Redirection
if (!redirections(token_list, cmd_arr))
return (ft_retp_free(NULL, &cmd_arr, (t_free_f)free_pipeline));
// Struct CMD fill
if (!cmd_array_fill_argv(token_list, cmd_arr))
return (ft_retp_free(NULL, &cmd_arr, (t_free_f)free_pipeline));
print_cmd_array(cmd_arr);
// HUGO WIP
// handle_path(cmd_arr, envp);
return (cmd_arr); return (cmd_arr);
} }
size_t count_pipes(t_token *token)
{
size_t nb;
nb = 0;
while (token)
{
if (token->id == T_PIPE)
nb++;
token = token->next;
}
return (nb + 1);
}
t_cmd **create_cmd(t_token *token_list, size_t cmd_nbr)
{
t_cmd **cmd_arr;
size_t i;
(void)token_list;
cmd_arr = ft_calloc(cmd_nbr + 1, sizeof(t_cmd *));
cmd_arr[cmd_nbr] = NULL;
i = 0;
while (i < cmd_nbr)
{
cmd_arr[i] = ft_calloc(1, sizeof(t_cmd));
ft_bzero(cmd_arr[i], sizeof(t_cmd));
i++;
}
return (cmd_arr);
}
int is_redirection(enum e_token_id id)
{
if (id == T_LESS) // <
return (1);
else if (id == T_GREAT) // >
return (1);
else if (id == T_DLESS) // <<
return (1);
else if (id == T_DGREAT) // >>
return (1);
else
return (0);
}
// count nbr word in cmd, minus redirection and heredoc
int next_cmd(t_token *token)
{
int i;
i = 0;
while (token && token->id != T_PIPE)
{
if (is_redirection(token->id))
i--;
else
i++;
token = token->next;
}
if (token && token->id == T_PIPE)
token = token->next;
return (i);
}
void handle_argv(t_token *token, t_cmd **cmd, size_t cmd_nbr)
{
int argc;
int j;
int i;
int redirection;
i = 0;
while (cmd_nbr)
{
argc = next_cmd(token);
cmd[i]->argv = calloc(argc + 1, sizeof(char *));
cmd[i]->argv[argc] = NULL;
j = 0;
redirection = is_redirection(token->id);
while (token && token->id != T_PIPE)
{
if (!redirection && token->id == T_WORD)
{
cmd[i]->argv[j] = ft_strdup(token->content);
j++;
}
redirection = is_redirection(token->id);
token = token->next;
}
if (token && token->id == T_PIPE)
token = token->next;
cmd_nbr--;
i++;
}
}
int fill_builtin(t_cmd *cmd, int (*builtin)(int, char **, t_all *))
{
cmd->builtin_command = builtin;
return (1);
}
int handle_builtin(t_cmd *cmd)
{
if (!ft_strncmp(cmd->argv[0], "echo", 4))
return (fill_builtin(cmd, builtin_echo));
else if (!ft_strncmp(cmd->argv[0], "cd", 2))
return (fill_builtin(cmd, &builtin_cd));
else if (!ft_strncmp(cmd->argv[0], "pwd", 3))
return (fill_builtin(cmd, builtin_pwd));
else if (!ft_strncmp(cmd->argv[0], "export", 6))
return (fill_builtin(cmd, &builtin_export));
else if (!ft_strncmp(cmd->argv[0], "unset", 5))
return (fill_builtin(cmd, &builtin_unset));
else if (!ft_strncmp(cmd->argv[0], "env", 3))
return (fill_builtin(cmd, builtin_env));
else if (!ft_strncmp(cmd->argv[0], "exit", 4))
return (fill_builtin(cmd, builtin_exit));
return (0);
}
void find_path(char **argv, char **envp)
{
int i;
char **path;
char *cmd;
i = 0;
while (envp[i] && ft_strncmp(envp[i], "PATH=", 5))
i++;
path = ft_split(envp[i] + 5, ':'); // 5 = lentgh of "PATH="
i = -1;
while (*path && i != 0)
{
cmd = ft_strjoin(path[0], "/");
cmd = ft_strjoin(cmd, argv[0]);
i = access(cmd, X_OK);
path++;
}
if (!(*path))
exit(0); // gerer erreur
argv[0] = cmd;
}
void handle_path(t_cmd **cmd_arr, char **envp)
{
int i;
i = 0;
while (cmd_arr[i])
{
if (!handle_builtin(cmd_arr[i]))
find_path(cmd_arr[i]->argv, envp);
i++;
}
}
void fd_redirection(t_token *token, t_cmd *cmd)
{
int flag;
if (token->id == T_LESS) // '<'
{
flag = O_RDONLY | O_CREAT;
if (cmd->fd_in != 0)
close(cmd->fd_in);
cmd->fd_in = open(token->next->content, flag);
}
else if (token->id == T_GREAT) // '>'
{
flag = O_WRONLY | O_CREAT | O_TRUNC;
cmd->fd_out = open(token->next->content, flag, S_IRWXU);
}
else if (token->id == T_DGREAT) // '>>'
{
flag = O_WRONLY | O_CREAT | O_APPEND;
cmd->fd_out = open(token->next->content, flag, S_IRWXU);
}
}
void fd_heredoc(t_token *token, t_cmd *cmd)
{
(void)token;
(void)cmd;
}
void handle_fd(t_token *token, t_cmd **cmd_arr)
{
int *pipes_fd;
int i;
i = 0;
while (cmd_arr[i])
{
cmd_arr[i]->fd_out = 1;
while (token && token->id != T_PIPE)
{
if (token->id == T_DGREAT) // '<<'
fd_heredoc(token, cmd_arr[i]);
else
fd_redirection(token, cmd_arr[i]);
token = token->next;
}
if (token && token->id == T_PIPE)
{
token = token->next;
pipes_fd = calloc(2, sizeof(int));
pipe(pipes_fd);
if (cmd_arr[i]->fd_out == 1)
cmd_arr[i]->fd_out = pipes_fd[1];
else
close(pipes_fd[1]);
cmd_arr[i + 1]->fd_in = pipes_fd[0];
}
i++;
}
}
/* ------------------------------------------------------- /* -------------------------------------------------------
The grammar symbols The grammar symbols
------------------------------------------------------- */ ------------------------------------------------------- */

114
srcs/parsing/redirections/here_doc.c Normal file
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@@ -0,0 +1,114 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* here_doc.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/11 18:46:43 by lperrey #+# #+# */
/* Updated: 2021/11/16 22:29:01 by lperrey ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
#define TMP_HERE_DOC "/tmp/minishell_here_doc"
static int here_doc_write(char *delimiter, int doc_fd);
int here_doc(char *delimiter)
{
// https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_07_04
// https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_02
/* If any part of word is quoted,
the delimiter shall be formed by performing quote removal on word,
and the here-document lines shall not be expanded.
Otherwise, the delimiter shall be the word itself. */
// TODO : A voir si on fait les expansions de variables dans le here_doc.
// implementer une gestion des signaux pour here_doc (verifier comportement bash et doc POSIX).
// Peut-être remplacer gnl() par readline() pour avoir une gestion correct
// du terminal (actuellement l'affichage lors du changement de ligne est foireux).
int here_doc;
here_doc = open(TMP_HERE_DOC, O_WRONLY | O_CREAT | O_TRUNC, S_IRWXU);
if (here_doc == -1)
return (ft_reti_perror_io(-1, "open() ", TMP_HERE_DOC));
delimiter = ft_strdup_quotes(delimiter);
if (!delimiter)
return (ft_reti_perror(-1, "ft_strdup_quotes()"));
if (!here_doc_write(delimiter, here_doc))
{
free(delimiter);
return (0);
}
free(delimiter);
if (close(here_doc) == -1)
ft_perror_io("close() ", TMP_HERE_DOC);
here_doc = open(TMP_HERE_DOC, O_RDONLY);
if (here_doc == -1)
ft_perror_io("open() ", TMP_HERE_DOC);
if (unlink(TMP_HERE_DOC) == -1)
return (ft_reti_perror_io(-1, "unlink() ", TMP_HERE_DOC));
return (here_doc);
}
static int here_doc_write(char *delimiter, int doc_fd)
{
char *line;
size_t line_count;
line_count = 0;
while (1)
{
line_count++;
line = NULL;
line = readline("> ");
if (!line)
{ // TODO : error print wrapper
ft_putstr_fd("minishell: ", 2);
ft_putstr_fd("warning: here-document at line ", 2);
ft_putnbr_fd(line_count, 2);
ft_putstr_fd(" delimited by end-of-file (wanted `", 2);
ft_putstr_fd(delimiter, 2);
ft_putstr_fd("')\n", 2);
return (0);
}
if (ft_strncmp(line, delimiter, ft_strlen(line) + 1) == 0) // Ou ft_strlen(delimiter) + 1 ? Ça devrais être identique et ça peux se calculer une seul fois.
break ;
if (write(doc_fd, line, ft_strlen(line)) == -1)
return (ft_reti_perror_free(0, line, free, "write() "TMP_HERE_DOC));
if (write(doc_fd, "\n", 1) == -1)
return (ft_reti_perror_free(0, line, free, "write() "TMP_HERE_DOC));
free(line);
}
free(line);
return (1);
}
/*
static int here_doc_write(char *delimiter, int doc_fd)
{
char *line;
int ret;
line = NULL;
ret = 1;
while (ret)
{
ret = gnl(STDIN_FILENO, &line, 0);
if (ret == -1)
return (ft_reti_perror_free(0, line, free, "gnl() STDIN"));
if (ft_strncmp(line, delimiter, ft_strlen(line) + 1) == 0) // Ou ft_strlen(delimiter) + 1 ? Ça devrais être identique et ça peux se calculer une seul fois.
break ;
if (write(doc_fd, line, ft_strlen(line)) == -1)
return (ft_reti_perror_free(0, line, free, "write() "TMP_HERE_DOC));
if (write(doc_fd, "\n", 1) == -1)
return (ft_reti_perror_free(0, line, free, "write() "TMP_HERE_DOC));
free(line);
line = NULL;
}
free(line);
gnl(STDIN_FILENO, NULL, 1);
return (1);
}
*/

99
srcs/parsing/redirections/redirections.c Normal file
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@@ -0,0 +1,99 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* redirections.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/11/11 18:46:43 by lperrey #+# #+# */
/* Updated: 2021/11/16 22:29:52 by lperrey ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
int here_doc(char *delimiter);
static int redirect_cmd_input(t_token *t, t_cmd *cmd);
static int redirect_cmd_output(t_token *t, t_cmd *cmd);
int redirections(t_token *t, t_cmd **cmd_arr)
{
int i;
i = 0;
while (t)
{
if (!cmd_arr[i]->error)
{
if (t->id == '<' || t->id == T_DLESS)
{
if (!redirect_cmd_input(t, cmd_arr[i]))
return (0);
}
else if (t->id == '>' || t->id == T_DGREAT)
{
if (!redirect_cmd_output(t, cmd_arr[i]))
return (0);
}
}
else if (t->id == '|')
i++;
t = t->next;
}
return (1);
}
static int redirect_cmd_input(t_token *t, t_cmd *cmd)
{
if (cmd->fd_in != STDIN_FILENO)
if (close(cmd->fd_in) == -1)
perror("close()");
if (t->id == '<')
{
// TODO : Expansion + quote removal sur le word t->next->content.
// si plus d'un champ ou aucun champ aprés expansion,
// message d'erreur comme bash "bash: $VAR: ambiguous redirect"
// OU prise en compte seulement du premier champ.
//EXPAND_AND_QUOTE_REMOVAL_PLACEHOLDER();
cmd->fd_in = open(t->next->content, O_RDONLY);
if (cmd->fd_in == -1)
{
ft_perror_io("open() ", t->next->content); // todo error
cmd->error = 42; // WIP error status
}
}
else if (t->id == T_DLESS)
{
cmd->fd_in = here_doc(t->next->content);
if (cmd->fd_in == -1)
return (ft_reti_print(0, "minishell: heredoc error\n", 2));
}
return (1);
}
static int redirect_cmd_output(t_token *t, t_cmd *cmd)
{
int flags;
if (cmd->fd_out != STDOUT_FILENO)
if (close(cmd->fd_out) == -1)
perror("close()");
// TODO : Expansion + quote removal sur le word t->next->content.
// si plus d'un champ ou aucun champ aprés expansion,
// message d'erreur comme bash "bash: $VAR: ambiguous redirect"
// OU prise en compte seulement du premier champ.
//EXPAND_AND_QUOTE_REMOVAL_PLACEHOLDER();
flags = O_WRONLY | O_CREAT;
if (t->id == '>')
flags = flags | O_TRUNC;
else if (t->id == T_DGREAT)
flags = flags | O_APPEND;
cmd->fd_out = open(t->next->content, flags, S_IRWXU);
if (cmd->fd_out == -1)
{
ft_perror_io("open() ", t->next->content);
cmd->error = 42; // WIP error status
}
return (1);
}

0
srcs/parsing/valid_command.c → srcs/parsing/valid_syntax/valid_command.c
View File

0
srcs/parsing/valid_io_redirect.c → srcs/parsing/valid_syntax/valid_io_redirect.c
View File

0
srcs/parsing/valid_pipeline.c → srcs/parsing/valid_syntax/valid_pipeline.c
View File

0
srcs/parsing/valid_syntax.c → srcs/parsing/valid_syntax/valid_syntax.c
View File

82
srcs/shell_loop.c
View File

@@ -6,7 +6,7 @@
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */ /* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2021/10/04 05:59:26 by lperrey #+# #+# */ /* Created: 2021/10/04 05:59:26 by lperrey #+# #+# */
/* Updated: 2021/11/16 13:12:52 by hulamy ### ########.fr */ /* Updated: 2021/11/17 01:30:27 by lperrey ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
@@ -24,82 +24,30 @@ void shell_loop(t_all *c)
{ {
if (line_input) if (line_input)
free(line_input); free(line_input);
c->signal_behaviour.sa_handler = sigint_handler_interactive;
sigaction(SIGINT, &c->signal_behaviour, NULL);
line_input = readline(c->prompt); line_input = readline(c->prompt);
if (line_input && *line_input) if (line_input && *line_input)
{ {
c->signal_behaviour.sa_handler = SIG_IGN;
sigaction(SIGINT, &c->signal_behaviour, NULL);
add_history(line_input); add_history(line_input);
// Lexing
c->token_list = input_to_tokens(line_input); c->token_list = input_to_tokens(line_input);
c->cmd_arr = parsing(c->token_list, c->envp); if (!c->token_list)
execute_cmd(c->envp, c->cmd_arr, c); continue ;
// Parsing
c->cmd_arr = parsing(c->token_list);
ft_lstclear((t_list **)&c->token_list, free); ft_lstclear((t_list **)&c->token_list, free);
if (!c->cmd_arr)
continue ;
// Exec Pipeline
exec_cmd_line(c);
} }
else if (!line_input) else if (!line_input)
{ {
write(1, "exit\n", 5); write(1, "exit\n", 5);
exit(0); free_exit(c, c->last_exit_status);
} }
} }
} }
void close_fd(t_cmd *cmd)
{
if (cmd->fd_in != 0)
close(cmd->fd_in);
if (cmd->fd_out != 1)
close(cmd->fd_out);
}
void execute_cmd(char **envp, t_cmd **cmd_arr, t_all *c)
{
pid_t pid;
pid_t wpid;
int wstatus;
int i;
int argc;
// put signal handling for SIGINT to ignore so parent process will not activate signal_handling_executiv while childs are in process
c->signal_behaviour.sa_handler = SIG_IGN;
sigaction(SIGINT, &c->signal_behaviour, NULL);
i = 0;
while(cmd_arr[i])
{
pid = fork();
if (pid == 0)
{
// activate singal handling for execution mode
c->signal_behaviour.sa_handler = sigint_handler_execution;
sigaction(SIGINT, &c->signal_behaviour, NULL);
if (cmd_arr[i]->fd_in != 0)
dup2(cmd_arr[i]->fd_in, STDIN_FILENO);
if (cmd_arr[i]->fd_out != 1)
dup2(cmd_arr[i]->fd_out, STDOUT_FILENO);
close_fd(cmd_arr[i]);
if (cmd_arr[i]->builtin_command)
{
argc = 0;
while (cmd_arr[i]->argv[argc])
argc++;
cmd_arr[i]->builtin_command(argc, cmd_arr[i]->argv, c);
exit(0);
}
else
{
write(1, "1", 1);
execve(cmd_arr[i]->argv[0], cmd_arr[i]->argv, envp);
}
}
else
close_fd(cmd_arr[i]);
i++;
}
// waitpid pour la derniere commande (pour '$?')
wpid = 1;
while (wpid > 0)
wpid = wait(&wstatus);
// to print a \n after execve was terminated by a signal
if (WIFSIGNALED(wstatus))
write(1, "\n", 1);
// put signal handling for sigint back to the signal handler for interactiv mode
c->signal_behaviour.sa_handler = sigint_handler_interactiv;
sigaction(SIGINT, &c->signal_behaviour, NULL);
}

15
srcs/signals.c
View File

@@ -6,31 +6,24 @@
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */ /* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */ /* +#+#+#+#+#+ +#+ */
/* Created: 2021/10/23 18:56:53 by lperrey #+# #+# */ /* Created: 2021/10/23 18:56:53 by lperrey #+# #+# */
/* Updated: 2021/11/15 20:08:26 by hulamy ### ########.fr */ /* Updated: 2021/11/16 22:58:29 by lperrey ### ########.fr */
/* */ /* */
/* ************************************************************************** */ /* ************************************************************************** */
#include "minishell.h" #include "minishell.h"
void sigint_handler_interactiv(int signum) void sigint_handler_interactive(int signum)
{ {
(void)signum; (void)signum;
write(1, "\n", 1); write(1, "\n", 1);
rl_replace_line("", 1);
rl_on_new_line(); rl_on_new_line();
rl_replace_line("", 1);
rl_redisplay(); rl_redisplay();
} }
void sigint_handler_execution(int signum)
{
(void)signum;
write(1, "\n", 1);
// exit(0);
}
int set_signals_handling(struct sigaction *signal_behaviour) int set_signals_handling(struct sigaction *signal_behaviour)
{ {
signal_behaviour->sa_handler = sigint_handler_interactiv; signal_behaviour->sa_handler = sigint_handler_interactive;
sigaction(SIGINT, signal_behaviour, NULL); sigaction(SIGINT, signal_behaviour, NULL);
signal_behaviour->sa_handler = SIG_IGN; signal_behaviour->sa_handler = SIG_IGN;
sigaction(SIGQUIT, signal_behaviour, NULL); sigaction(SIGQUIT, signal_behaviour, NULL);

29
test_rl_base.c
View File

@@ -1,29 +0,0 @@
# include <stdlib.h>
# include <unistd.h>
# include <readline/readline.h>
int main(int argc, char *argv[], char *envp[])
{
(void)argc;
(void)argv;
char *line_input;
char *prompt;
line_input = NULL;
prompt = strdup("\e[0;31mtest>\e[0m ");
while (1)
{
if (line_input)
free(line_input);
line_input = readline(prompt);
if (line_input && *line_input)
{
write(1, line_input, strlen(line_input));
write(1, "\n", 1);
}
else if (!line_input)
write(1, "\n", 1);
}
return (0);
}

98
test_rl_modif.c
View File

@@ -1,98 +0,0 @@
# include <stdlib.h>
# include <unistd.h>
# include <readline/readline.h>
# include <signal.h>
# include <sys/wait.h>
void handler_sigint(int id)
{
(void)id;
write(1, "\n", 1);
rl_replace_line("", 1);
rl_on_new_line();
rl_redisplay();
}
void handler_sigint_execution(int id)
{
(void)id;
write(1, "\n", 1);
exit(0);
}
int main(int argc, char *argv[], char *envp[])
{
(void)argc;
(void)argv;
char *line_input;
char *prompt;
pid_t pid;
char **argvtmp;
int wstatus;
signal(SIGINT, handler_sigint); // signal handling for SINGINT while interactive mode
line_input = NULL;
prompt = strdup("\e[0;31m>\e[0m ");
while (1)
{
if (line_input)
free(line_input);
line_input = readline(prompt);
if (line_input && *line_input)
{
signal(SIGINT, SIG_IGN); // stop signal handling for SIGINT because end of interactive mode
pid = fork();
if (pid == 0)
{
signal(SIGINT, handler_sigint_execution); // start signal handling for SIGINT in child process
if (!strncmp("sleep", line_input, 5))
{
argvtmp = malloc(sizeof(char*) * 3);
argvtmp[0] = strdup("sleep");
argvtmp[1] = strdup("2");
argvtmp[2] = NULL;
execve("/bin/sleep", argvtmp, envp);
}
else if (!strncmp("echo", line_input, 4))
{
write(1, "3", 2);
sleep(1);
write(1, "\b2", 2);
sleep(1);
write(1, "\b1", 2);
sleep(1);
write(1, "\b0\n", 3);
execve("/bin/echo", argv, envp);
}
else
{
write(1, line_input, strlen(line_input));
write(1, " 3", 2);
sleep(1);
write(1, "\b2", 2);
sleep(1);
write(1, "\b1", 2);
sleep(1);
write(1, "\b0\n", 3);
exit(0);
}
}
else
{
wait(&wstatus);
if (WIFEXITED(wstatus))
write(1, "the child terminated normally\n", 30);
if (WIFSIGNALED(wstatus))
write(1, "the child was terminated by a signal\n", 37);
}
signal(SIGINT, handler_sigint); // restart signal handling for SIGINT because re-entring in interactive mode
}
else if (!line_input)
{
write(1, "exit\n", 5);
exit(0);
}
}
return (0);
}