Merge pull request #54 from AnonymusRaccoon/echo2

Echo

Makefile

@@ -26,6 +26,7 @@ SRC = src/shell.c \
 	src/builtin/builtin_where.c \
 	src/builtin/builtin_alias.c \
 	src/builtin/builtin_unalias.c \
+	src/builtin/builtin_echo.c \
 	src/signal.c \
 	src/free_env.c \
 	src/utility/same_var.c \
@@ -54,6 +55,8 @@ TESTS = tests/tenv.c \
 	tests/targc.c \
 	tests/texecute.c \
 	tests/tcd.c \
+  tests/tsource.c \
+	tests/techo.c
 
 COVERAGE = -lcriterion --coverage
 

include/builtin.h

@@ -28,6 +28,7 @@ int builtin_source(char **argv, env_t *env);
 int builtin_history(char **args, env_t *env);
 int builtin_alias(char **args, env_t *env);
 int builtin_unalias(char **args, env_t *env);
+int builtin_echo(char **args, env_t *env);
 //utility
 bool find_path_in_builtins(char *cmd);
 char **get_envpath(env_t *env);
@@ -52,4 +53,7 @@ void print_aliases(alias_t *list);
 int add_alias_to_list(alias_t **list, alias_t *elem, char *alias);
 
 //unalias
-void remove_alias(char *alias, alias_t **list);
+void remove_alias(char *alias, alias_t **list);
+
+//echo
+int print_char(char *str, int i);

src/builtin/builtin_echo.c

@@ -0,0 +1,50 @@
+/*
+** EPITECH PROJECT, 2020
+** builtin_echo.c
+** File description:
+** builtin_echo
+*/
+
+#include "builtin.h"
+#include <shell.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int builtin_echo(char **argv, env_t *env)
+{
+    for (int i = 1; argv[i]; i++) {
+        for (int j = 0; argv[i][j]; j++)
+            j += print_char(argv[i], j);
+        if (argv[i + 1])
+            printf(" ");
+    }
+    printf("\n");
+    fflush(stdout);
+    env->vars = my_setenv(env->vars, "?", "0");
+    return (0);
+}
+
+int print_char(char *str, int i)
+{
+    if (str[i] == '\\' && str[i + 1] == 'a')
+        return (printf("\a"));
+    if (str[i] == '\\' && str[i + 1] == 'b')
+        return (printf("\b"));
+    if (str[i] == '\\' && str[i + 1] == 't')
+        return (printf("\t"));
+    if (str[i] == '\\' && str[i + 1] == 'n')
+        return (printf("\n"));
+    if (str[i] == '\\' && str[i + 1] == 'v')
+        return (printf("\v"));
+    if (str[i] == '\\' && str[i + 1] == 'f')
+        return (printf("\f"));
+    if (str[i] == '\\' && str[i + 1] == 'r')
+        return (printf("\r"));
+    if (str[i] == '\\') {
+        printf("\\%c", str[i + 1]);
+        return (1);
+    }
+    printf("%c", str[i]);
+    return (0);
+}

src/prompt.c

@@ -27,6 +27,7 @@ const builtin builtins[] = {
     {"source", &builtin_source},
     {"alias", &builtin_alias},
     {"unalias", &builtin_unalias},
+    {"echo", &builtin_echo},
     {NULL, NULL}
 };
 

tests/techo.c

@@ -0,0 +1,42 @@
+/*
+** EPITECH PROJECT, 2020
+** test_echo.c
+** File description:
+** techo
+*/
+
+#include <criterion/redirect.h>
+#include <criterion/criterion.h>
+#include "builtin.h"
+
+Test(echo, normal_message, .init = cr_redirect_stdout)
+{
+    env_t env = {};
+    char *av[] = {"echo", "hello", NULL};
+    builtin_echo(av, &env);
+    cr_assert_stdout_eq_str("hello\n");
+}
+
+Test(echo, with_simple_backslash, .init = cr_redirect_stdout)
+{
+    env_t env = {};
+    char *av[] = {"echo", "\\n", NULL};
+    builtin_echo(av, &env);
+    cr_assert_stdout_eq_str("\n\n");
+}
+
+Test(echo, incorrect_ascii, .init = cr_redirect_stdout)
+{
+    env_t env = {};
+    char *av[] = {"echo", "\\q", NULL};
+    builtin_echo(av, &env);
+    cr_assert_stdout_eq_str("\\q\n");
+}
+
+Test(echo, multiple_args, .init = cr_redirect_stdout)
+{
+    env_t env = {};
+    char *av[] = {"echo", "Hello", "I\'m", "Marvin", NULL};
+    builtin_echo(av, &env);
+    cr_assert_stdout_eq_str("Hello I\'m Marvin\n");
+}