nicolas-arnaud
/
Minishell
1
0
Fork 1
Code Issues Pull Requests Projects 1 Releases Wiki Activity
Browse Source

header cleaning and staticing

master
narnaud 3 years ago
parent
eb971e6542
commit
f38efabccf
7 changed files with 254 additions and 250 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Unified View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 79
      caller.c
  2. 76
      env.c
  3. 148
      lexer.c
  4. 12
      minishell.c
  5. 25
      minishell.h
  6. 107
      parser.c
  7. 55
      utils_2.c

79
caller.c
View File

@ -12,6 +12,23 @@
#include "minishell.h" #include "minishell.h"
static void exe(t_datas *datas, t_command *cmd);
static pid_t caller(t_datas *datas, t_command *cmd);
int is_builtin(char *cmd)
{
if (!ft_strncmp(cmd, "echo", 5) ||
!ft_strncmp(cmd, "pwd", 4) ||
!ft_strncmp(cmd, "cd", 3) ||
!ft_strncmp(cmd, "export", 7) ||
!ft_strncmp(cmd, "unset", 6) ||
!ft_strncmp(cmd, "env", 4) ||
!ft_strncmp(cmd, "exit", 5))
return (1);
else
return (0);
}
int builtin_call(t_datas *datas, t_command *cmd) int builtin_call(t_datas *datas, t_command *cmd)
{ {
if (ft_strncmp(cmd->argv[0], "echo", 5) == 0) if (ft_strncmp(cmd->argv[0], "echo", 5) == 0)
@ -32,21 +49,32 @@ int builtin_call(t_datas *datas, t_command *cmd)
return (-1); return (-1);
} }
int is_builtin(char *cmd) int piper(t_datas *datas, t_command *cmd)
{ {
if (!ft_strncmp(cmd, "echo", 5) || int pip[2];
!ft_strncmp(cmd, "pwd", 4) || int status;
!ft_strncmp(cmd, "cd", 3) || pid_t pid;
!ft_strncmp(cmd, "export", 7) ||
!ft_strncmp(cmd, "unset", 6) || if (cmd->fd[1] == 0 && cmd->next && cmd->next->fd[0] == 0)
!ft_strncmp(cmd, "env", 4) || {
!ft_strncmp(cmd, "exit", 5)) pipe(pip);
return (1); cmd->fd[1] = pip[1];
else cmd->next->fd[0] = pip[0];
return (0); }
pid = caller(datas, cmd);
if (cmd->fd[1])
close(cmd->fd[1]);
if (cmd->next)
piper(datas, cmd->next);
waitpid(pid, &status, 0);
if (!cmd->next)
handle_status(datas, status);
if (cmd->fd[0])
close(cmd->fd[0]);
return (1);
} }
void exe(t_datas *datas, t_command *cmd) static void exe(t_datas *datas, t_command *cmd)
{ {
char **path_dirs; char **path_dirs;
char *path; char *path;
@ -71,7 +99,7 @@ void exe(t_datas *datas, t_command *cmd)
} }
} }
pid_t caller(t_datas *datas, t_command *cmd) static pid_t caller(t_datas *datas, t_command *cmd)
{ {
pid_t pid; pid_t pid;
@ -90,28 +118,3 @@ pid_t caller(t_datas *datas, t_command *cmd)
} }
return pid; return pid;
} }
int piper(t_datas *datas, t_command *cmd)
{
int pip[2];
int status;
pid_t pid;
if (cmd->fd[1] == 0 && cmd->next && cmd->next->fd[0] == 0)
{
pipe(pip);
cmd->fd[1] = pip[1];
cmd->next->fd[0] = pip[0];
}
pid = caller(datas, cmd);
if (cmd->fd[1])
close(cmd->fd[1]);
if (cmd->next)
piper(datas, cmd->next);
waitpid(pid, &status, 0);
if (!cmd->next)
handle_status(datas, status);
if (cmd->fd[0])
close(cmd->fd[0]);
return (1);
}

76
env.c
View File

@ -12,42 +12,7 @@
#include "minishell.h" #include "minishell.h"
int is_valid_identifier(char *ident) static void clean_env(t_datas *datas);
{
if (ft_isalpha(ident[0]) || ident[0] == '_')
{
while (*ident)
{
if (!ft_isalpha(*ident) && !ft_isdigit(*ident) && *ident != '_')
return (0);
ident++;
}
return (1);
}
return (0);
}
void clean_env(t_datas *datas)
{
int i;
int j;
i = 0;
j = 0;
while (i < 1024)
{
if (!datas->envp[i])
{
j = 1;
while (!datas->envp[i + j] && (i + j) < 1024)
j++;
if (i + j == 1024)
return ;
datas->envp[i] = datas->envp[i + j];
datas->envp[i + j] = NULL;
}
i++;
}
}
int ft_unset(t_datas *datas, t_command *cmd) int ft_unset(t_datas *datas, t_command *cmd)
{ {
char **env; char **env;
@ -100,6 +65,7 @@ int ft_env(t_datas *datas, t_command *cmd)
return (0); return (0);
} }
static int is_valid_identifier(char *ident);
int ft_export(t_datas *datas, t_command *cmd) int ft_export(t_datas *datas, t_command *cmd)
{ {
char **new; char **new;
@ -133,3 +99,41 @@ int ft_export(t_datas *datas, t_command *cmd)
datas->envp[i] = ft_strdup(cmd->argv[1]); datas->envp[i] = ft_strdup(cmd->argv[1]);
return (1); return (1);
} }
static void clean_env(t_datas *datas)
{
int i;
int j;
i = 0;
j = 0;
while (i < ENVP_MAX_SIZE)
{
if (!datas->envp[i])
{
j = 1;
while (!datas->envp[i + j] && (i + j) < ENVP_MAX_SIZE)
j++;
if (i + j == ENVP_MAX_SIZE)
return ;
datas->envp[i] = datas->envp[i + j];
datas->envp[i + j] = NULL;
}
i++;
}
}
static int is_valid_identifier(char *ident)
{
if (ft_isalpha(ident[0]) || ident[0] == '_')
{
while (*ident)
{
if (!ft_isalpha(*ident) && !ft_isdigit(*ident) && *ident != '_')
return (0);
ident++;
}
return (1);
}
return (0);
}

148
lexer.c
View File

@ -12,7 +12,68 @@
#include "minishell.h" #include "minishell.h"
int create_token(t_lexer *lex, char str[]) static int check_state(t_lexer *lex, char **line);
static int create_token(t_lexer *lex, char str[]);
static int check_register(t_lexer *lex, char **line, char *tmp);
t_token *lexer(t_datas *datas, char *line)
{
t_lexer *lex;
t_token *ret;
char *tmp;
int tmp_i;
lex = ft_calloc(1, sizeof *lex);
lex->state = ROOT_ST;
tmp = ft_calloc(STR_MAX_SIZE, sizeof *tmp);
tmp_i = 0;
while (*line)
{
if (check_state(lex, &line))
continue;
if (lex->state != S_QUOTE_ST && *line == '$')
tmp_i = replace_var(datas, &line, tmp, tmp_i);
else if (check_register(lex, &line, tmp))
tmp_i = (ft_bzero(tmp, STR_MAX_SIZE), 0);
else
tmp[tmp_i++] = *(line++);
}
create_token(lex, tmp);
free(tmp);
ret = lex->tokens;
free(lex);
return (ret);
}
static int check_state(t_lexer *lex, char **line)
{
t_state new;
new = OLD_ST;
if (**line == '"')
{
if (lex->state == D_QUOTE_ST)
new = ROOT_ST;
else if (lex->state == ROOT_ST)
new = D_QUOTE_ST;
}
else if (**line == '\'')
{
if (lex->state == S_QUOTE_ST)
new = ROOT_ST;
else if (lex->state == ROOT_ST)
new = S_QUOTE_ST;
}
if (new)
{
(*line)++;
lex->state = new;
return (1);
}
return (0);
}
static int create_token(t_lexer *lex, char str[])
{ {
t_token *tok; t_token *tok;
t_token *tmp; t_token *tmp;
@ -39,28 +100,9 @@ int create_token(t_lexer *lex, char str[])
return (1); return (1);
} }
int set_redir(t_lexer *lex, char **line, char ch) static int set_redir(t_lexer *lex, char **line, char ch);
{
static t_type type_out[2] = {OUT, ADD};
static t_type type_in[2] = {IN, HD};
t_type *type;
if (ch == '>')
type = type_out;
else
type = type_in;
if (**line == ch && (*line)++)
{
if (**line == ch && (*line)++)
lex->next_type = type[1];
else
lex->next_type = type[0];
return (1);
}
return (0);
}
int check_register(t_lexer *lex, char **line, char *tmp) static int check_register(t_lexer *lex, char **line, char *tmp)
{ {
int spaces; int spaces;
@ -88,59 +130,23 @@ int check_register(t_lexer *lex, char **line, char *tmp)
return (create_token(lex, tmp)); return (create_token(lex, tmp));
} }
int check_state(t_lexer *lex, char **line) static int set_redir(t_lexer *lex, char **line, char ch)
{ {
t_state new; static t_type type_out[2] = {OUT, ADD};
static t_type type_in[2] = {IN, HD};
t_type *type;
new = OLD_ST; if (ch == '>')
if (**line == '"') type = type_out;
{ else
if (lex->state == D_QUOTE_ST) type = type_in;
new = ROOT_ST; if (**line == ch && (*line)++)
else if (lex->state == ROOT_ST)
new = D_QUOTE_ST;
}
else if (**line == '\'')
{
if (lex->state == S_QUOTE_ST)
new = ROOT_ST;
else if (lex->state == ROOT_ST)
new = S_QUOTE_ST;
}
if (new)
{ {
(*line)++; if (**line == ch && (*line)++)
lex->state = new; lex->next_type = type[1];
else
lex->next_type = type[0];
return (1); return (1);
} }
return (0); return (0);
} }
t_token *lexer(t_datas *datas, char *line)
{
t_lexer *lex;
t_token *ret;
char *tmp;
int tmp_i;
lex = ft_calloc(1, sizeof *lex);
lex->state = ROOT_ST;
tmp = ft_calloc(1024, sizeof *tmp);
tmp_i = 0;
while (*line)
{
if (check_state(lex, &line))
continue;
if (lex->state != S_QUOTE_ST && *line == '$')
tmp_i = replace_var(datas, &line, tmp, tmp_i);
else if (check_register(lex, &line, tmp))
tmp_i = (ft_bzero(tmp, 1024), 0);
else
tmp[tmp_i++] = *(line++);
}
create_token(lex, tmp);
free(tmp);
ret = lex->tokens;
free(lex);
return (ret);
}

12
minishell.c
View File

@ -18,8 +18,7 @@ void termios(int ctl)
int tty; int tty;
tty = ttyslot(); tty = ttyslot();
if (tcgetattr(tty, &termios_p) < 0) tcgetattr(tty, &termios_p);
exit ((perror("stdin"), EXIT_FAILURE));
if (ctl) if (ctl)
{ {
termios_p.c_lflag |= ECHOCTL; termios_p.c_lflag |= ECHOCTL;
@ -62,7 +61,7 @@ void prompt(t_datas *datas)
line = readline("$ "); line = readline("$ ");
termios(1); termios(1);
if (line == NULL) if (line == NULL)
halt(datas, EXIT_FAILURE); halt(datas, EXIT_SUCCESS);
if (is_empty(line)) if (is_empty(line))
return ; return ;
cmd = parser(datas, lexer(datas, line), NULL); cmd = parser(datas, lexer(datas, line), NULL);
@ -76,11 +75,10 @@ void prompt(t_datas *datas)
int main(int argc, char **argv, char **envp) int main(int argc, char **argv, char **envp)
{ {
t_datas datas; static t_datas datas;
int i; static int i = 0;
i = 0; datas.envp = ft_calloc(ENVP_MAX_SIZE, sizeof(char *));
datas.envp = ft_calloc(ENVP_LIMIT, sizeof(char *));
while (*envp) while (*envp)
datas.envp[i++] = ft_strdup(*(envp++)); datas.envp[i++] = ft_strdup(*(envp++));
datas.exit_code = 0; datas.exit_code = 0;

25
minishell.h
View File

@ -12,11 +12,9 @@
#ifndef MINISHELL_H #ifndef MINISHELL_H
# define MINISHELL_H # define MINISHELL_H
# define ENVP_LIMIT 1024 # define ENVP_MAX_SIZE 1024
# define PIPE_MAX_SIZE 8192 # define STR_MAX_SIZE 1024
# define PATHS_MAX_SIZE 126 # define PATHS_MAX_SIZE 126
# define PROMPT_PREFIX 0
# define DEBUG 0
# include "libft/libft.h" # include "libft/libft.h"
# include <fcntl.h> # include <fcntl.h>
@ -55,10 +53,9 @@ void sigs_handler(int sig_num);
void halt(t_datas *datas, int ret_code); void halt(t_datas *datas, int ret_code);
// ----------------------------------Utils_2.c // ----------------------------------Utils_2.c
int replace_var(t_datas *datas, char **line, \
char *tmp, int tmp_i);
int file_error(char *cmd, char *file, char *msg); int file_error(char *cmd, char *file, char *msg);
char *expend_str(t_datas *datas, char *line); int replace_var(t_datas *datas, char **line, char *tmp, int tmp_i);
char *expend_str(t_datas *datas, char *line);
// ----------------------------------Builtins.c // ----------------------------------Builtins.c
int ft_echo(t_command *cmd); int ft_echo(t_command *cmd);
@ -67,16 +64,13 @@ int ft_cd(t_command *cmd);
int ft_exit(t_datas *datas, t_command *cmd); int ft_exit(t_datas *datas, t_command *cmd);
// ----------------------------------Env.c // ----------------------------------Env.c
int is_valid_identifier(char *ident);
int ft_unset(t_datas *datas, t_command *cmd); int ft_unset(t_datas *datas, t_command *cmd);
int ft_env(t_datas *datas, t_command *cmd); int ft_env(t_datas *datas, t_command *cmd);
int ft_export(t_datas *datas, t_command *cmd); int ft_export(t_datas *datas, t_command *cmd);
// ----------------------------------Caller.c // ----------------------------------Caller.c
void exe(t_datas *datas, t_command *cmd);
int builtin_call(t_datas *datas, t_command *cmd);
int is_builtin(char *cmd); int is_builtin(char *cmd);
pid_t caller(t_datas *datas, t_command *cmd); int builtin_call(t_datas *datas, t_command *cmd);
int piper(t_datas *datas, t_command *cmd); int piper(t_datas *datas, t_command *cmd);
// ----------------------------------Parser.c // ----------------------------------Parser.c
@ -97,11 +91,7 @@ typedef struct s_token
struct s_token *next; struct s_token *next;
} t_token; } t_token;
size_t count_arguments(t_token *tok); t_command *parser(t_datas *datas, t_token *tok,t_command *prev);
void update_redir(t_datas *datas, t_command *cmd,\
t_token *tok);
t_command *parser(t_datas *datas, t_token *tok,\
t_command *prev);
// ----------------------------------Lexer.c // ----------------------------------Lexer.c
typedef enum e_state typedef enum e_state
@ -121,9 +111,6 @@ typedef struct s_lex
int n_elem; int n_elem;
} t_lexer; } t_lexer;
int create_token(t_lexer *lex, char str[]);
int check_register(t_lexer *lex, char **line, char *tmp);
int check_state(t_lexer *lex, char **line);
t_token *lexer(t_datas *datas, char *line); t_token *lexer(t_datas *datas, char *line);
#endif #endif

107
parser.c
View File

@ -12,25 +12,32 @@
#include "minishell.h" #include "minishell.h"
int push_heredoc(t_datas *datas, char *str) static size_t count_arguments(t_token *tok);
static t_token *parse_cmd(t_datas *datas, t_token *tok, t_command *cmd);
t_command *parser(t_datas *datas, t_token *tok, t_command *prev)
{ {
char *line; t_command *cmd;
int pip[2];
pipe(pip); if (!tok)
while(1) return (NULL);
cmd = ft_calloc(1, sizeof *cmd);
if (prev)
cmd->prev = prev;
cmd->argv = ft_calloc(count_arguments(tok) + 1, sizeof(char *));
cmd->argc = 0;
while(tok && tok->type != PIPE)
tok = parse_cmd(datas, tok, cmd);
if (tok)
{ {
line = readline(">"); cmd->next = parser(datas, tok->next, cmd);
if (!ft_strncmp(line, str, ft_strlen(str) + 1)) free(tok->value);
break; free(tok);
ft_putstr_fd(expend_str(datas, line), pip[1]);
write(pip[1], "\n", 1);
} }
close(pip[1]); return(cmd);
return (pip[0]);
} }
size_t count_arguments(t_token *tok) static size_t count_arguments(t_token *tok)
{ {
size_t ret; size_t ret;
@ -44,7 +51,42 @@ size_t count_arguments(t_token *tok)
return (ret); return (ret);
} }
void update_redir(t_datas *datas, t_command *cmd, t_token *tok) static void update_redir(t_datas *datas, t_command *cmd, t_token *tok);
static t_token *parse_cmd(t_datas *datas, t_token *tok, t_command *cmd)
{
t_token *prev_tok;
if (tok->type)
update_redir(datas, cmd, tok);
else
cmd->argv[cmd->argc++] = ft_strdup(tok->value);
prev_tok = tok;
tok = tok->next;
free(prev_tok->value);
free(prev_tok);
return (tok);
}
static int push_heredoc(t_datas *datas, char *str)
{
char *line;
int pip[2];
pipe(pip);
while(1)
{
line = readline(">");
if (!ft_strncmp(line, str, ft_strlen(str) + 1))
break;
ft_putstr_fd(expend_str(datas, line), pip[1]);
write(pip[1], "\n", 1);
}
close(pip[1]);
return (pip[0]);
}
static void update_redir(t_datas *datas, t_command *cmd, t_token *tok)
{ {
if (tok->type == OUT) if (tok->type == OUT)
{ {
@ -71,40 +113,3 @@ void update_redir(t_datas *datas, t_command *cmd, t_token *tok)
cmd->fd[0] = push_heredoc(datas, tok->value); cmd->fd[0] = push_heredoc(datas, tok->value);
} }
} }
t_token *parse_cmd(t_datas *datas, t_token *tok, t_command *cmd)
{
t_token *prev_tok;
if (tok->type)
update_redir(datas, cmd, tok);
else
cmd->argv[cmd->argc++] = ft_strdup(tok->value);
prev_tok = tok;
tok = tok->next;
free(prev_tok->value);
free(prev_tok);
return (tok);
}
t_command *parser(t_datas *datas, t_token *tok, t_command *prev)
{
t_command *cmd;
if (!tok)
return (NULL);
cmd = ft_calloc(1, sizeof(t_command));
if (prev)
cmd->prev = prev;
cmd->argv = ft_calloc(count_arguments(tok) + 1, sizeof(char *));
cmd->argc = 0;
while(tok && tok->type != PIPE)
tok = parse_cmd(datas, tok, cmd);
if (tok)
{
cmd->next = parser(datas, tok->next, cmd);
free(tok->value);
free(tok);
}
return(cmd);
}

55
utils_2.c
View File

@ -24,32 +24,7 @@ int file_error(char *cmd, char *file, char *msg)
return (0); return (0);
} }
char *get_var_value(t_datas *datas, char **line, int name_len) static char *get_var_value(t_datas *datas, char **line, int name_len);
{
int i;
char **env;
char *name;
char *value;
name = ft_substr(*line, 1, name_len - 1);
i = 0;
value = NULL;
while (datas->envp[i] && !value)
{
env = ft_split(datas->envp[i], '=');
if (!ft_strncmp(name, env[0], name_len + 1))
value = (free(env[0]), env[1]);
else if (++i)
ft_free_split(env);
}
free(name);
if (value)
free(env);
else
value = strdup("");
return (value);
}
int replace_var(t_datas *datas, char **line, char *tmp, int tmp_i) int replace_var(t_datas *datas, char **line, char *tmp, int tmp_i)
{ {
int name_len; int name_len;
@ -83,7 +58,7 @@ char *expend_str(t_datas *datas, char *line)
char *tmp; char *tmp;
int tmp_i; int tmp_i;
tmp = ft_calloc(1024, sizeof *tmp); tmp = ft_calloc(STR_MAX_SIZE, sizeof *tmp);
if (!tmp) if (!tmp)
free(tmp); free(tmp);
tmp_i = 0; tmp_i = 0;
@ -96,3 +71,29 @@ char *expend_str(t_datas *datas, char *line)
} }
return (tmp); return (tmp);
} }
static char *get_var_value(t_datas *datas, char **line, int name_len)
{
int i;
char **env;
char *name;
char *value;
name = ft_substr(*line, 1, name_len - 1);
i = 0;
value = NULL;
while (datas->envp[i] && !value)
{
env = ft_split(datas->envp[i], '=');
if (!ft_strncmp(name, env[0], name_len + 1))
value = (free(env[0]), env[1]);
else if (++i)
ft_free_split(env);
}
free(name);
if (value)
free(env);
else
value = strdup("");
return (value);
}

Write Preview
Loading…
Cancel
Save