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un pipe fonctionne pour sleep et ls, code tres incomplet et brouillon dans main et readme

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This commit is contained in:
hugogogo
2021-10-19 00:17:34 +02:00
parent 25d159410f
commit c225a51199
2 changed files with 29 additions and 19 deletions
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3
README.md
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@@ -59,6 +59,9 @@
## 2. lexer (lexique analyser :
---
[wait for all childs to terminate](https://stackoverflow.com/questions/19461744/how-to-make-parent-wait-for-all-child-processes-to-finish)
[close pipes in child AND parents](https://stackoverflow.com/questions/33884291/pipes-dup2-and-exec)
### 2.1 methode arbre binaire :
[transformer arbre normal en arbre binaire](https://fr.wikipedia.org/wiki/Arbre_binaire#Transformation_d'un_arbre_quelconque_en_un_arbre_binaire)

45
srcs/main.c
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@@ -6,7 +6,7 @@
/* By: lperrey <lperrey@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/10/04 05:59:26 by lperrey #+# #+# */
/* Updated: 2021/10/18 22:29:02 by hulamy ### ########.fr */
/* Updated: 2021/10/18 23:44:34 by hulamy ### ########.fr */
/* */
/* ************************************************************************** */
@@ -96,47 +96,54 @@ while (++i < pipes->nb_pipes)
void execute_cmd(t_all *c, t_pipe *pipes)
{
pid_t pid;
pid_t wpid;
int status;
int i;
int stdout_bak;
status = 0;
if (pipes->nb_pipes)
stdout_bak = dup(STDOUT_FILENO);
i = 0;
while (i <= pipes->nb_pipes)
{
if (pipes->nb_pipes)
{
printf("%i\n", stdout_bak);
if (i == 0)
{
dup2(pipes->pipes_fd[0][1], STDOUT_FILENO);
}
if (i == 1)
{
dup2(pipes->pipes_fd[0][0], STDIN_FILENO);
dup2(stdout_bak, STDOUT_FILENO);
}
close(pipes->pipes_fd[0][0]);
close(pipes->pipes_fd[0][1]);
close(stdout_bak);
}
pid = fork();
if (pid == 0) // child
{
if (pipes->nb_pipes)
{
if (i == 0)
{
dup2(pipes->pipes_fd[0][1], STDOUT_FILENO);
}
if (i == 1)
{
dup2(pipes->pipes_fd[0][0], STDIN_FILENO);
dup2(stdout_bak, STDOUT_FILENO);
}
close(pipes->pipes_fd[0][0]);
close(pipes->pipes_fd[0][1]);
close(stdout_bak);
}
if (!ft_strncmp(pipes->input_split[i], "sleep ", 6))
execve("/bin/sleep", ft_split(pipes->input_split[i], ' '), c->envp);
if (!ft_strncmp(pipes->input_split[i], "ls ", 3))
{
write(1, "\na\n\n", 4);
execve("/bin/ls", ft_split(pipes->input_split[i], ' '), c->envp);
}
}
if (pid > 0) // parent
{
wait(0);
if (pipes->nb_pipes)
{
close(pipes->pipes_fd[0][0]);
close(pipes->pipes_fd[0][1]);
close(stdout_bak);
}
}
i++;
}
while ((wpid = wait(&status)) > 0);
}
void shell_loop(t_all *c)