rectifs à la con

TP1/ex1.c

@@ -1,12 +1,50 @@
 #include <unistd.h>
 #include <stdlib.h>
 
+int	my_strlen(char *str)
+{
+	int	len;
+
+	len = 0;
+	while (str[len] != '\0')
+		len++;
+	return (len);
+}
+
+void	my_putnbr(int nb)
+{
+	char c;
+
+	if (nb < 0)
+	{
+		if (nb == -2147483648)
+		{
+			write(1, "-", 1);
+			write(1, "2", 1);
+			my_putnbr(147483648);
+			return ;
+		}
+		nb = nb * -1;
+		write(1, "-", 1);
+	}
+	if (nb >= 0 && nb < 10)
+	{
+		c = nb + '0';
+		write(1, &c, 1);
+	}
+	if (nb >= 10)
+	{
+		my_putnbr(nb / 10);
+		my_putnbr(nb % 10);
+	}
+}
+
 int		main(int argc, char *argv[])
 {
 	int	i;
 	int	j;
-	char	c;
 	char	*path = getenv("PATH");
+	
 	i = 0;
 	j = 0;
 	if(!path)
@@ -16,13 +54,10 @@ int		main(int argc, char *argv[])
 	}
 	while (i < argc)
 	{
-		c = i + '0';
 		write(1, "arg[", 4);
-		write(1, &c, 1);
+		my_putnbr(i);
 		write(1, "]=", 2);
-		j = 0;
+		j = my_strlen(argv[i]);
-		while (argv[i][j])
-			j++;
 		write(1, argv[i], j);
 		write(1, "\n", 1);
 		i++;

TP1/ex2.c

@@ -6,6 +6,5 @@ int main() {
     system("ps -f");
     write(1, "\nRecouvrement par la même commande 'ps -f' via execlp :\n", 57);
     execlp("ps", "ps", "-f", (char *)NULL);
-    // Cette partie ne sera atteinte qu'en cas d'erreur dans execlp
     return 0;
 }

TP2/tp2.c

@@ -0,0 +1,170 @@
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <time.h>
+#include <limits.h>
+#include <errno.h>
+
+void	my_putnbr(int nb)
+{
+	char c;
+
+	if (nb < 0)
+	{
+		if (nb == -2147483648)
+		{
+			write(1, "-", 1);
+			write(1, "2", 1);
+			my_putnbr(147483648);
+			return ;
+		}
+		nb = nb * -1;
+		write(1, "-", 1);
+	}
+	if (nb >= 0 && nb < 10)
+	{
+		c = nb + '0';
+		write(1, &c, 1);
+	}
+	if (nb >= 10)
+	{
+		my_putnbr(nb / 10);
+		my_putnbr(nb % 10);
+	}
+}
+
+void	my_putnbrUnsignedLong(long nb)
+{
+	char c;
+
+	if (nb >= 0 && nb < 10)
+	{
+		c = nb + '0';
+		write(1, &c, 1);
+	}
+	if (nb >= 10)
+	{
+		my_putnbr(nb / 10);
+		my_putnbr(nb % 10);
+	}
+}
+
+int	my_strlen(char *str)
+{
+	int	len;
+
+	len = 0;
+	while (str[len] != '\0')
+		len++;
+	return (len);
+}
+
+char	*my_strcat(char *dest, char *src, int len)
+{
+	int	i;
+	int	j;
+	char	*final;
+	
+	i = 0;
+	j = 0;
+	final = (char*)malloc(len);
+	while (dest[i] != '\0')
+	{
+		final[i] = dest[i];
+		i++;
+	}
+	final[i] = '/';
+	i++;
+	while (src[j] != '\0')
+	{
+		final[i] = src[j];
+		i++;
+		j++;
+	}
+	final[i] = '\0';
+	return (final);
+}
+
+void	showFileInfos(char *fileName)
+{
+	struct	stat fileStat;
+
+	if(lstat(fileName, &fileStat) == -1)
+	{
+		write(1, "Foirage du statage\n", 20);
+		exit(1);
+	}
+	write(1, fileName, my_strlen(fileName));
+	write(1, " ", 1);	
+	my_putnbr(fileStat.st_size);
+	write(1, " ", 1);	
+	my_putnbrUnsignedLong(fileStat.st_mtim.tv_sec);
+	write(1, "\n", 2);
+}
+
+int	my_strcmp(char *s1, char *s2)
+{
+	int i;
+
+	i = 0;
+	while (s1[i])
+	{
+		if (s1[i] != s2[i])
+			return (s1[i] - s2[i]);
+		i++;
+	}
+	return (s1[i] - s2[i]);
+}
+
+void	listDirContent(char *leDossier)
+{
+	DIR	*dir;
+	struct	dirent *lesEntrees;
+	char	*fileAbsolPath;
+	size_t	path_length;
+
+	dir = opendir(leDossier);
+	if(!dir)
+	{
+		if(errno == ENOTDIR) //C'est quand meme pas mal errno, je decouvre
+		{
+			write(1, "t'es bourré, on veut le nom d'un dossier et pas autre chose\n", 61);
+			exit(1);
+		}
+		write(1, "Probleme ouverture dossier, droit d'acces ?\n", 45);
+		return;
+	}
+	path_length = my_strlen(leDossier) + NAME_MAX + 2;
+	fileAbsolPath = (char*)malloc(path_length);
+	while((lesEntrees = readdir(dir)))
+	{
+		if(lesEntrees->d_type == DT_DIR && my_strcmp(lesEntrees->d_name,".") && my_strcmp(lesEntrees->d_name,".."))
+		{
+			fileAbsolPath = my_strcat((char *)leDossier, lesEntrees->d_name, path_length);
+			showFileInfos(fileAbsolPath);
+			listDirContent(fileAbsolPath);
+		}
+		else
+		{
+
+			fileAbsolPath = my_strcat((char *)leDossier, lesEntrees->d_name, path_length);
+			showFileInfos(fileAbsolPath);
+		}
+	}
+	free(fileAbsolPath);
+	closedir(dir);
+}
+
+int	main(int argc, char **argv)
+{
+	if(argc != 2)
+	{
+		write(1, "t'es bourré, on veut le nom d'un dossier qu'on t'dis\n", 54);
+		exit(1);
+	}
+	listDirContent(argv[1]);
+	return 0;
+}
+

tubes/tp3.c

@@ -0,0 +1,65 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define MAX_MSG_LEN 2048
+#define MAX_PROC 10
+
+int	my_strlen(char *str)
+{
+	int	len;
+
+	len = 0;
+	while (str[len] != '\0')
+		len++;
+	return (len);
+}
+
+int	main(void)
+{
+	const int	N = MAX_PROC;
+	int		fd[MAX_PROC][2];
+	pid_t		pid[MAX_PROC];
+	int		dest;
+	char		msg[MAX_MSG_LEN];
+	int		i;
+
+	i = 0;
+	dest = 0;
+	while(i < N)
+    	{
+		if(pipe(fd[i]) == -1)
+		{
+			perror("foirage du pipage");
+			exit(EXIT_FAILURE);
+		}
+		pid[i] = fork();
+		if (pid[i] == -1)
+		{
+			perror("foirage du forkage");
+			exit(EXIT_FAILURE);
+		}
+        	if(pid[i] == 0)
+		{
+			dup2(fd[i][1], 1);
+			close(fd[i][0]);
+		}
+		i++;
+	}
+	while(scanf("%d %[^\n]", &dest, msg) != EOF)
+	{
+		if(dest >= 0 && dest < N)
+		{
+			printf("Processus %d a reçu: %s\n", dest, msg);
+			write(fd[dest][1], msg, my_strlen(msg) + 1);
+		}
+	}
+	i = 0;
+	while(i < N)
+	{
+		close(fd[i][1]);
+		i++;
+	}
+	return 0;
+}
+