first ideas of my understanding

diff --git a/src/builtins_part_one.c b/src/builtins_part_one.c
new file mode 100644 (file)
index 0000000..d7ab540
--- /dev/null
+++ b/src/builtins_part_one.c
@@ -0,0 +1,173 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   builtins_part_one.c                                :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: chuhlig <chuhlig@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/08/09 17:01:16 by chuhlig           #+#    #+#             */
+/*   Updated: 2024/08/09 19:07:31 by chuhlig          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+int    echo(char **av)
+{
+       int     i;
+       int     f;
+
+       i = 1;
+       if (av[1][0] == '\0')
+       {
+               write(1, "\n", 1);
+               return (1);
+       }
+       if (ft_strcmp(av[1], "-n"))
+       {
+               i++;
+               f = 1;
+       }
+       while (av[i])
+       {
+               write(1, &av[1], ft_strlen(av[i]));
+               i++;
+       }
+       if (f)
+               write(1, "\n", 1);
+       return (0);
+}
+// Und args wären bei
+// echo Hello World
+// dann
+// echo, Hello und World 
+
+
+// Die Builtins haben bitte int als return type. 0 = Success, 1 = Error usw.
+// Als Parameter kann ich dir die das hier geben:
+// char **args
+// Aufpassen: args[0] ist der Name des Commands.
+// t_env *env
+// Hier hast du alle Variablen drin.
+// Schau dir dafür am besten env.h an.
+
+
+
+// 2-G-4:~ chuhlig$ echo -n hello
+// hello2-G-4:~ chuhlig$ echo test -n hello
+// test -n hello
+   
+
+
+// minishell % echo -n "Das ist"
+// echo -n " ein Beispiel"
+// echo " für echo -n."
+
+// 2-G-4:~ chuhlig$ echo 'hello world'
+// hello world
+// 2-G-4:~ chuhlig$ echo hello'world'
+// helloworld
+// 2-G-4:~ chuhlig$ echo hello""world
+// helloworld
+// 2-G-4:~ chuhlig$ echo ''
+
+// 2-G-4:~ chuhlig$ echo "$PWD"
+// /Users/chuhlig
+// 2-G-4:~ chuhlig$ echo '$PWD'
+// $PWD
+// 2-G-4:~ chuhlig$ echo "aspas ->'"
+// aspas ->'
+// 2-G-4:~ chuhlig$ echo "aspas -> ' "
+// aspas -> ' 
+// 2-G-4:~ chuhlig$ echo 'aspas ->"'
+// aspas ->"
+// 2-G-4:~ chuhlig$ echo 'aspas -> " '
+// aspas -> " 
+// 2-G-4:~ chuhlig$ echo "> >> < * ? [ ] | ; [ ] || && ( ) & # $ \ <<"
+// > >> < * ? [ ] | ; [ ] || && ( ) & # $ \ <<
+// 2-G-4:~ chuhlig$ echo '> >> < * ? [ ] | ; [ ] || && ( ) & # $ \ <<'
+// > >> < * ? [ ] | ; [ ] || && ( ) & # $ \ <<
+// 2-G-4:~ chuhlig$ echo "exit_code ->$? user ->$USER home -> $HOME"
+// exit_code ->0 user ->chuhlig home -> /Users/chuhlig
+// 2-G-4:~ chuhlig$ echo 'exit_code ->$? user ->$USER home -> $HOME'
+// exit_code ->$? user ->$USER home -> $HOME
+// 2-G-4:~ chuhlig$ echo "$"
+// $
+// 2-G-4:~ chuhlig$ echo '$'
+// $
+// 2-G-4:~ chuhlig$ echo $
+// $
+
+// 2-G-4:~ chuhlig$ echo "test" -n hello
+// test -n hello
+// 2-G-4:~ chuhlig$ echo -n "test" -n hello
+// test -n hello2-G-4:~ chuhlig$ echo -n "test" echo -n hello
+// test echo -n hello2-G-4:~ chuhlig$ 
+
+
+
+// 2-G-4:~ chuhlig$ echo -n "test1 test2" test3
+// test1 test2 test32-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n " test1 test2 " 'test3 '
+//  test1 test2  test3 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n test1test2
+// test1test22-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo test1 -n
+// test1 -n
+// 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo "test1 -n"
+// test1 -n
+// 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n -n test1
+// test12-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n -n -n -n -n test1
+// test12-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -
+// -
+// 2-G-4:~ chuhlig$ echo --
+// --
+// 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo "  -nn "
+//   -nn 
+// 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo "-n test1 -n test2"
+// -n test1 -n test2
+// 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo "test1 -n test2"
+// test1 -n test2
+// 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo ~42
+// ~42
+// 2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n -n -nasd
+// -nasd2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n -n -n-nnnnn
+// -n-nnnnn2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n -nnnnnnn -n -nnn -nnnnn -n-n
+// -n-n2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n -nnnnnnn -n -nnn -nnnnn -n feel my pain
+// feel my pain2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo -n -n -n-n
+// -n-n2-G-4:~ chuhlig$ 
+// 2-G-4:~ chuhlig$ echo "'totally logical'"
+// 'totally logical'
+// 2-G-4:~ chuhlig$ echo 'totally logical'
+// totally logical
+// 2-G-4:~ chuhlig$ echo ''totally logical''
+// totally logical
+// 2-G-4:~ chuhlig$ echo ""'totally logical'""
+// totally logical
+
+// 2-G-4:~ chuhlig$ eCho
+
+// 2-G-4:~ chuhlig$ eChO
+
+// 2-G-4:~ chuhlig$ eCHO
+
+// 2-G-4:~ chuhlig$ ECHO
+int    pwd_builtin(void)
+{
+       char    cwd[1028];
+
+       getcwd(cwd, sizeof(cwd));
+       printf("%s\n", cwd);
+       return (0);
+}
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