From 7b0b3dabc4e1859fde1b171b777af5ec4411807a Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Wed, 29 Mar 2023 01:07:58 +0200
Subject: [PATCH] apps: Add ls

---
 apps/CMakeLists.txt |  1 +
 apps/ls.c           | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)
 create mode 100644 apps/ls.c

diff --git a/apps/CMakeLists.txt b/apps/CMakeLists.txt
index 7e009718..e86ebf70 100644
--- a/apps/CMakeLists.txt
+++ b/apps/CMakeLists.txt
@@ -11,3 +11,4 @@ luna_app(cat.c cat)
 luna_app(edit.c edit)
 luna_app(sh.c sh)
 luna_app(date.c date)
+luna_app(ls.c ls)
diff --git a/apps/ls.c b/apps/ls.c
new file mode 100644
index 00000000..f8a0a9ba
--- /dev/null
+++ b/apps/ls.c
@@ -0,0 +1,32 @@
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int main(int argc, char** argv)
+{
+    const char* pathname;
+    if (argc == 1) pathname = "/";
+    else
+        pathname = argv[1];
+
+    DIR* dp = opendir(pathname);
+    if (!dp)
+    {
+        perror("opendir");
+        return 1;
+    }
+
+    int first_ent = 1;
+    do {
+        struct dirent* ent = readdir(dp);
+        if (!ent) break;
+        printf(first_ent ? "%s" : " %s", ent->d_name);
+        first_ent = 0;
+    } while (1);
+
+    putchar('\n');
+
+    closedir(dp);
+    return 0;
+}