add: line parsing via getchar

src/const.h

@@ -0,0 +1 @@
+#define BUFSIZE 1024

src/exec.c

@@ -0,0 +1,3 @@
+#include "exec.h"
+
+void execute_cmd(void) {}

src/exec.h

@@ -0,0 +1,4 @@
+#pragma once
+
+int is_builtin_cmd(void);
+void execute_cmd(void);

src/main.c

@@ -1,8 +1,16 @@
+#include "parsing.h"
 #include <stdio.h>
+#include <stdlib.h>
 
 int main(int argc, char *argv[], char *envp[]) {
+  (void)argc;
+  (void)argv;
+
   int index = 0;
   while (envp[index]) {
     printf("%s\n", envp[index++]);
   }
+  shell_loop();
+
+  return EXIT_SUCCESS;
 }

src/parsing.c

@@ -0,0 +1,51 @@
+#include "parsing.h"
+#include "const.h"
+#include "exec.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+char *read_line() {
+  char c;
+  int i = 0;
+  char *buffer = malloc(BUFSIZE * sizeof(char));
+  if (buffer == NULL) {
+    dprintf(STDERR_FILENO, "Line read buffer allocation error !");
+    exit(EXIT_FAILURE);
+  }
+
+  while (1) {
+    c = getchar();
+
+    if (c == EOF || c == '\n') {
+      buffer[i] = '\0';
+      return buffer;
+    } else {
+      buffer[i] = c;
+    }
+    i++;
+    // TODO: realoc quand le buffer est dépassé
+  }
+}
+
+char **split_line(char *line) {
+  (void)line;
+  return NULL;
+}
+
+void shell_loop(void) {
+  char *line;
+  char **args;
+  int status = 1;
+
+  do {
+    dprintf(STDOUT_FILENO, "> ");
+    line = read_line();
+    dprintf(STDOUT_FILENO, "%s\n", line);
+    args = split_line(line);
+    execute_cmd();
+
+    // free(line);
+    free(args);
+  } while (status);
+}

src/parsing.h

@@ -0,0 +1,5 @@
+#pragma once
+#include <stdio.h>
+#include <unistd.h>
+
+void shell_loop(void);