switching away from using readline after realizing it was making things a little to easy, wouldnt give me the fullfilling feeling im looking for...

1 files changed, 49 insertions, 14 deletions

diff --git a/main.c b/main.c
index da1bd6c..f25e2d3 100644
--- a/main.c
+++ b/main.c
@@ -1,11 +1,8 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
-#include <readline/readline.h>
 #include <dirent.h>
 #include <unistd.h>
-#include <readline/readline.h>
-#include <readline/history.h>
 
 
 /* BOOLEANS */
@@ -13,6 +10,21 @@
 #define false 0
 #define _DEFAULT_SOURCE
 
+#define MAX_HISTORY 10
+#define MAX_COMMAND_LENGTH 256
+
+
+static int CURRENT_COMMAND_INDEX            = 0;
+static int CURRENT_COMMAND_HISTORY_INDEX    = 0;
+static char COMMAND_HISTORY[MAX_HISTORY][MAX_COMMAND_LENGTH];
+
+
+
+static char *line_read = (char*)NULL; 
+
+
+// DEFAULT SHELL COMMANDS
+// exit() command
 void exit_program(char *argv)
 {
     if (strcmp(argv, "exit"))
@@ -21,11 +33,7 @@ void exit_program(char *argv)
     }
 }
 
-void get_pid_parent_process()
-{
-    printf("PID %ld\n", (long)getpid());
-}
-
+// pwd command
 void list_directories()
 {
     struct dirent **namelist;
@@ -47,8 +55,7 @@ void list_directories()
     exit(EXIT_SUCCESS);
 }
 
-
-
+// echo emulation command, without variables
 void echo(char *command, char *argv)
 {
     if (strcmp(command, "echo") == 0)
@@ -57,12 +64,40 @@ void echo(char *command, char *argv)
     }
 }
 
-int main(void) 
+char *save_history(char *user_input)
 {
+    
+    while (CURRENT_COMMAND_HISTORY_INDEX < MAX_HISTORY)
+    {
+        while (CURRENT_COMMAND_INDEX < MAX_COMMAND_LENGTH)
+        {
+            COMMAND_HISTORY[CURRENT_COMMAND_HISTORY_INDEX][CURRENT_COMMAND_INDEX] = *user_input;
+            CURRENT_COMMAND_HISTORY_INDEX++;
+        }
+    }
+    return *COMMAND_HISTORY;
+}
+
+// GET USER INPUT
+char * get_line()
+{
+    if (line_read)
+    {
+        free(line_read);
+        line_read = (char *)NULL;
+    }
+    scanf("%s", &(*line_read));
 
-    char *input;
-    readline(input);
-     
+    if (line_read && *line_read)
+        save_history(line_read);
+
+    return line_read;
+}
+
+
+int main(void) 
+{
+    char *input;    
     while(strcmp(input, "exit") != 0)
     {
         list_directories();