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variables d'environnement dans le parsing

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This commit is contained in:
Tom Moron
2024-02-09 14:42:03 +01:00
parent 9b80cc758f
commit 22403b127e
13 changed files with 382 additions and 59 deletions
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8
Makefile
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@ -6,14 +6,18 @@
# By: tomoron <marvin@42.fr> +#+ +:+ +#+ #
# +#+#+#+#+#+ +#+ #
# Created: 2023/07/28 00:35:01 by tomoron #+# #+# #
# Updated: 2024/02/06 22:07:47 by tomoron ### ########.fr #
# Updated: 2024/02/08 16:18:42 by tomoron ### ########.fr #
# #
# **************************************************************************** #
CC = cc
SRCS = main.c\
ft_lst_cmd.c
ft_lst_cmd.c\
ft_lst_env.c\
ft_exec.c\
ft_exit.c\
ft_echo.c
OBJS = $(SRCS:.c=.o)

35
ft_echo.c Normal file
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@ -0,0 +1,35 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_echo.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/02/07 15:30:37 by tomoron #+# #+# */
/* Updated: 2024/02/07 23:15:04 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
int ft_echo(t_cmd *args)
{
int put_nl;
put_nl = 1;
while(args && !strcmp(args->token,"-n"))
{
put_nl = 0;
args = args->next;
}
while(args)
{
ft_putstr_fd(args->token, STDOUT_FILENO);
if(args->next)
ft_putchar_fd(' ',STDOUT_FILENO);
args = args->next;
}
if(put_nl)
ft_putchar_fd('\n',STDOUT_FILENO);
return(0);
}

37
ft_exec.c Normal file
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@ -0,0 +1,37 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_exec.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/02/07 14:12:49 by tomoron #+# #+# */
/* Updated: 2024/02/08 16:57:26 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
int exec_builtin(t_cmd *parsed_cmd, t_env *env)
{
if(!strcmp(parsed_cmd->token, "echo"))
g_return_code = ft_echo(parsed_cmd->next);
else if (!strcmp(parsed_cmd->token,"ret"))
g_return_code = ft_atoi(parsed_cmd->next->token);
else if(!strcmp(parsed_cmd->token, "env"))
g_return_code = ft_print_env(env);
else if(!strcmp(parsed_cmd->token, "exit"))
ft_exit(parsed_cmd);
else
return(STDIN_FILENO);
return(STDOUT_FILENO);
}
void ft_exec_command(t_cmd *parsed_cmd, t_env *env)
{
if(!parsed_cmd)
return;
if(exec_builtin(parsed_cmd, env))
return ;
ft_printf("not a builtin\n");
}

31
ft_exit.c Normal file
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@ -0,0 +1,31 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_exit.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/02/07 16:04:11 by tomoron #+# #+# */
/* Updated: 2024/02/07 16:48:07 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
void ft_exit(t_cmd *args)
{
t_cmd *start;
start = args;
args = args->next;
ft_printf("exit\n");
if(args && args->next)
ft_printf("minishell: exit: too many arguments\n");
else
{
ft_free_cmd(start);
if(args)
exit((unsigned char)ft_atoi(args->token));
exit(g_return_code);
}
}

11
ft_lst_cmd.c
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@ -6,7 +6,7 @@
/* By: tomoron <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/02/06 20:46:19 by tomoron #+# #+# */
/* Updated: 2024/02/06 22:09:09 by tomoron ### ########.fr */
/* Updated: 2024/02/08 12:42:12 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
@ -29,3 +29,12 @@ t_cmd *ft_cmd_add_back(t_cmd *cmd, char *token)
current->next = res;
return (cmd);
}
void ft_free_cmd(t_cmd *cmd)
{
if(cmd && cmd->next)
ft_free_cmd(cmd->next);
if(cmd)
free(cmd->token);
free(cmd);
}

54
ft_lst_env.c Normal file
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@ -0,0 +1,54 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_lst_env.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/02/06 20:46:19 by tomoron #+# #+# */
/* Updated: 2024/02/08 16:58:48 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
#include "minishell.h"
t_env *ft_env_add_back(t_env *env, char *name, char *value)
{
t_env *res;
t_env *current;
res = ft_calloc(1, sizeof(t_env));
if (!res)
return (env);
res->name = name;
res->value = value;
if (!env)
return (res);
current = env;
while (current->next)
current = current->next;
current->next = res;
return (env);
}
void ft_free_env(t_env *env)
{
if(env && env->next)
ft_free_env(env->next);
if(env)
{
free(env->name);
free(env->value);
}
free(env);
}
int ft_print_env(t_env *env)
{
while(env)
{
printf("%s=%s\n",env->name, env->value);
env = env->next;
}
return(0);
}

4
libft/ft_itoa.c
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@ -6,13 +6,13 @@
/* By: tomoron <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/11/01 02:36:12 by tomoron #+# #+# */
/* Updated: 2023/11/02 10:16:45 by tomoron ### ########.fr */
/* Updated: 2024/02/08 13:56:37 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
static int get_number_len(long int n)
int get_number_len(long int n)
{
int res;

4
libft/ft_strlen.c
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@ -6,7 +6,7 @@
/* By: tomoron <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/10/30 12:34:41 by tomoron #+# #+# */
/* Updated: 2023/10/31 14:53:10 by tomoron ### ########.fr */
/* Updated: 2024/02/08 17:54:36 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
@ -16,7 +16,7 @@ size_t ft_strlen(const char *str)
unsigned int n;
n = 0;
while (str[n])
while (str && str[n])
n++;
return (n);
}

3
libft/libft.h
View File

@ -6,7 +6,7 @@
/* By: tomoron <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2023/10/30 16:55:48 by tomoron #+# #+# */
/* Updated: 2024/02/06 22:15:58 by tomoron ### ########.fr */
/* Updated: 2024/02/08 18:44:22 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
@ -60,6 +60,7 @@ char *ft_strdup(const char *src);
void ft_bzero(void *s, size_t n);
void ft_putnbr_fd(int n, int fd);
void ft_free_str_arr(char **arr);
int get_number_len(long int n);
size_t ft_strlen(const char *str);
void ft_swap(int *n1, int *n2);
t_list *ft_lstnew(void *content);

210
main.c
View File

@ -6,7 +6,7 @@
/* By: tomoron <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/02/02 21:59:20 by tomoron #+# #+# */
/* Updated: 2024/02/06 22:21:44 by tomoron ### ########.fr */
/* Updated: 2024/02/09 14:37:48 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
@ -23,10 +23,62 @@ char *get_prompt(void)
res = ft_strjoin_free(res, getenv("USER"),1);
res = ft_strjoin_free(res, "@",1);
res = ft_strjoin_free(res, "minishell \001\033[0m\002$>",1);
return (res);
}
char *ft_getenv(t_env *env, char *name)
{
while(env)
{
if(!ft_strcmp(env->name, name))
return(env->value);
env = env->next;
}
return(0);
}
int get_var_name_len(char *command)
{
int res;
res = 0;
if(command[res] == '?')
return(1);
while(ft_isalnum(command[res]) || command[res] == '_')
res++;
return(res);
}
int ft_get_token_len(char *command)
char *get_var_name(char *command)
{
char *res;
int len;
len = get_var_name_len(command);
res = ft_substr(command,0, len);
return(res);
}
int ft_get_var_len(char **command, t_env *env)
{
char *var_name;
char *env_var;
(*command)++;
if (!ft_isalnum(**command) && **command != '_' && **command != '?')
return (1);
if (**command == '?')
return (get_number_len(g_return_code));
var_name = get_var_name(*command);
env_var = ft_getenv(env, var_name);
free(var_name);
if (!env_var)
return (0);
*command += get_var_name_len(*command) - 1;
return (ft_strlen(env_var));
}
int ft_get_token_len(char *command, t_env *env)
{
int in_quote;
int in_dquote;
@ -35,94 +87,160 @@ int ft_get_token_len(char *command)
in_quote = 0;
in_dquote = 0;
res = 0;
while(*command && (!isspace(*command) || in_quote || in_dquote))
while (*command && (!ft_isspace(*command) || in_quote || in_dquote))
{
if(*command == '"' && !in_quote)
if (*command == '"' && !in_quote)
in_dquote = !in_dquote;
if(*command == '\'' && !in_dquote)
if (*command == '\'' && !in_dquote)
in_quote = !in_quote;
if(*command != '\'' && *command != '"')
if (*command == '$' && !in_quote)
res += ft_get_var_len(&command, env);
else if (*command != '\'' && *command != '"')
res++;
if((*command == '\'' && in_dquote) || (*command == '"' && in_quote))
else if ((*command == '\'' && in_dquote) || (*command == '"' && in_quote))
res++;
command++;
}
return(res);
return (res);
}
void ft_skip_spaces(char **command)
int ft_add_var_to_str(char *res, char **command, t_env *env)
{
while (ft_isspace(**command))
(*command)++;
char *var_name;
char *var;
int i;
i = -1;
if (!ft_isalnum(**command) && **command != '_' && **command != '?')
{
*res = '$';
return(1);
}
if (**command == '?')
{
var = ft_itoa(g_return_code);
while(var && var[++i])
res[i] = var[i];
free(var);
return(i + 1);
}
var_name = get_var_name(*command);
var = ft_getenv(env, var_name);
free(var_name);
while(var && var[++i])
res[i] = var[i];
*command += get_var_name_len(*command) - 1;
return (i + !var);
}
char *ft_get_token(char **command)
char *ft_get_token(char **command, int *in_quote, int *in_dquote, t_env *env)
{
int in_quote;
int in_dquote;
char *res;
int i;
in_quote = 0;
in_dquote = 0;
i = 0;
while (ft_isspace(**command))
(*command)++;
res = malloc(ft_get_token_len(*command));
while(res && **command && (!isspace(**command) || in_quote || in_dquote))
res = ft_calloc(ft_get_token_len(*command, env) + 1, 1);
while (res && **command && (!ft_isspace(**command) || *in_quote || *in_dquote))
{
if(**command == '"' && !in_quote)
in_dquote = !in_dquote;
if(**command == '\'' && !in_dquote)
in_quote = !in_quote;
if(((**command == '\'' && in_dquote) || (**command == '"' && in_quote))
if (**command == '"' && !*in_quote)
*in_dquote = !*in_dquote;
if (**command == '\'' && !*in_dquote)
*in_quote = !*in_quote;
if (**command == '$' && !*in_quote)
{
(*command)++;
i += ft_add_var_to_str(res + i, command , env);
}
else if (((**command == '\'' && *in_dquote) || (**command == '"' && *in_quote))
|| (**command != '\'' && **command != '"'))
res[i++] = **command;
(*command)++;
}
return(res);
return (res);
}
t_cmd *ft_parse_command(char *command)
t_cmd *ft_parse_command(char *command, t_env *env)
{
int in_quote;
int in_dquote;
t_cmd *res;
char *token;
res = 0;
while(*command)
in_quote = 0;
in_dquote = 0;
res = STDIN_FILENO;
if (!command)
return (STDIN_FILENO);
while (*command)
{
token = ft_get_token(&command);
token = ft_get_token(&command, &in_quote, &in_dquote, env);
res = ft_cmd_add_back(res, token);
}
return(res);
if (in_quote || in_dquote)
{
ft_free_cmd(res);
ft_putstr_fd("minishell: syntax error\n", 2);
return (0);
}
return (res);
}
int main(void)
t_env *ft_get_env(char **envp)
{
t_env *env;
char *name;
char *value;
int i;
int j;
env = 0;
while (*envp)
{
i = 0;
j = 0;
while ((*envp)[i] && (*envp)[i] != '=')
i++;
while ((*envp)[i + 1 + j])
j++;
name = ft_substr(*envp, 0, i);
value = ft_substr(*envp, i + 1, j);
env = ft_env_add_back(env, name, value);
if (!name || !value)
ft_free_env(env);
if (!name || !value)
return (0);
envp++;
}
return (env);
}
int main(int argc, char **argv, char **envp)
{
char *command;
t_cmd *parsed_cmd;
t_env *env;
char *prompt;
command = (char *)1;
while(command)
command = (char *)STDOUT_FILENO;
(void)argc;
(void)argv;
env = ft_get_env(envp);
while (env && command)
{
prompt = get_prompt();
if(!prompt)
exit(0);
if (!prompt)
exit(STDIN_FILENO);
command = readline(prompt);
add_history(command);
free(prompt);
t_cmd *test;
test = ft_parse_command(command);
printf("%s\n",test->token);
printf("%s\n",command);
if(command && !ft_strcmp(command,"exit"))
{
rl_clear_history();
add_history(command);
parsed_cmd = ft_parse_command(command, env);
free(command);
printf("au revoir :,(\n");
exit(0);
ft_exec_command(parsed_cmd, env);
ft_free_cmd(parsed_cmd);
}
rl_clear_history();
free(command);
}
ft_free_env(env);
return (g_return_code);
}

19
minishell.h
View File

@ -6,7 +6,7 @@
/* By: tomoron <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/02/04 17:31:38 by tomoron #+# #+# */
/* Updated: 2024/02/06 22:09:30 by tomoron ### ########.fr */
/* Updated: 2024/02/08 16:58:15 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
@ -24,6 +24,21 @@ typedef struct s_cmd
struct s_cmd *next;
} t_cmd;
t_cmd *ft_cmd_add_back(t_cmd *res, char *token);
typedef struct s_env
{
char *name;
char *value;
struct s_env *next;
} t_env;
extern int g_return_code;
t_cmd *ft_cmd_add_back(t_cmd *res, char *token);
void ft_free_cmd(t_cmd *cmd);
void ft_exec_command(t_cmd *cmd, t_env *env);
int ft_echo(t_cmd *args);
void ft_exit(t_cmd *args);
t_env *ft_env_add_back(t_env *env, char *name, char *value);
void ft_free_env(t_env *env);
int ft_print_env(t_env *env);
#endif

4
test.c → other/test.c
View File

@ -6,7 +6,7 @@
/* By: tomoron <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/02/04 17:30:08 by tomoron #+# #+# */
/* Updated: 2024/02/06 12:41:57 by tomoron ### ########.fr */
/* Updated: 2024/02/07 14:29:12 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
@ -18,7 +18,7 @@ int main(int argc, char **argv)
int i = 0;
while(i < argc)
{
printf("%s\n",argv[i]);
printf("\"%s\"\n",argv[i]);
i++;
}
return(0);

19
other/test2.c Normal file
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@ -0,0 +1,19 @@
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* test2.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tomoron <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/02/07 13:30:04 by tomoron #+# #+# */
/* Updated: 2024/02/07 13:34:55 by tomoron ### ########.fr */
/* */
/* ************************************************************************** */
#include <stdlib.h>
#include <stdio.h>
int main(int argc,char **argv)
{
if(argc == 2)
return(atoi(argv[1]));
return(0);
}