Added basic command support

3 files changed, 33 insertions, 7 deletions

diff --git a/src/commands/command.c b/src/commands/command.c
new file mode 100644
index 0000000..ee53c90
--- /dev/null
+++ b/src/commands/command.c
@@ -0,0 +1,17 @@
+#include "../graphics/graphics.h"
+#include "../lib/lib.h"
+
+int32_t starts_with(const char *a, const char *b) {
+    if (strcmp(a, b, strlen(b)) == 0)
+        return 1
+    return 0
+}
+
+void exec_command(char *command) {
+    if (starts_with(command, "ls"))
+        terminal_write_string("// listing files");
+    else if (starts_with(command, "help"))
+	terminal_write_string("I can't help you write now");
+    else if (starts_with(command, "ping"))
+	terminal_write_string("pong!")
+}
diff --git a/src/commands/command.h b/src/commands/command.h
new file mode 100644
index 0000000..2a43416
--- /dev/null
+++ b/src/commands/command.h
@@ -0,0 +1,6 @@
+#ifndef MELVIX_COMMAND_H
+#define MELVIX_COMMAND_H
+
+void exec_command(char *command);
+
+#endif
diff --git a/src/graphics/vga.c b/src/graphics/vga.c
index cf04027..603a579 100644
--- a/src/graphics/vga.c
+++ b/src/graphics/vga.c
@@ -1,6 +1,7 @@
 #include <stddef.h>
 #include <stdint.h>
 #include "../io/io.h"
+#include "../lib/lib.h"
 
 // Hardware text mode color constants
 enum vga_color {
@@ -30,13 +31,6 @@ static inline uint16_t vga_entry(unsigned char uc, uint8_t color) {
     return (uint16_t) uc | (uint16_t) color << 8;
 }
 
-size_t strlen(const char *str) {
-    size_t len = 0;
-    while (str[len])
-        len++;
-    return len;
-}
-
 static const size_t VGA_WIDTH = 80;
 static const size_t VGA_HEIGHT = 25;
 
@@ -99,6 +93,14 @@ void terminal_put_entry_at(char c, uint8_t color, size_t x, size_t y) {
     terminal_buffer[index] = vga_entry(c, color);
 }
 
+char* terminal_get_line() {
+    char* line = "";
+    for (size_t x = 0; x < terminal_column; i++) {
+	line += terminal_buffer[terminal_row * VGA_WIDTH + x];	
+    // TODO: Fix returning line..
+    return line;
+}
+
 void terminal_put_char(char c) {
     if (c == 0x08) {
         if (terminal_column != 0) terminal_column--;
@@ -107,6 +109,7 @@ void terminal_put_char(char c) {
     } else if (c == '\r') {
         terminal_column = 0;
     } else if (c == '\n') {
+	exec_command(line);
         terminal_column = 0;
         terminal_row++;
         terminal_scroll();