FAT16 directory enumeration, making many functions static, new 'log' functions to wrap vga and serial

1 files changed, 59 insertions, 0 deletions

diff --git a/src/kernel/main2.c b/src/kernel/main2.c
new file mode 100644
index 0000000..2b85592
--- /dev/null
+++ b/src/kernel/main2.c
@@ -0,0 +1,59 @@
+#include <stdint.h>
+#include "drive.h"
+#include "util.h"
+#include "log.h"
+
+static char nbuf2[11];
+
+static char path_builder[200] = "";
+static uint8_t path_builder_len = 0;
+
+static char indent_builder[20] = "  ";
+static uint8_t indent_builder_len = 2;
+
+void tree(struct drive *d) {
+  struct directory_content_info infos[100];
+  uint8_t n_infos = d->enumerate_dir(d, path_builder, infos, 100);
+
+  if (!n_infos) {
+    logsz(indent_builder);
+    logsz("(empty)\n");
+    return;
+  }
+
+  for (uint8_t i = 0; i < n_infos; ++i) {
+    logsz(indent_builder);
+    logsz(infos[i].name);
+
+    if (infos[i].is_dir) {
+      logsz(":\n");
+
+      indent_builder[indent_builder_len] = ' ';
+      indent_builder[indent_builder_len + 1] = ' ';
+      indent_builder[indent_builder_len + 2] = '\0';
+      indent_builder_len += 2;
+
+      uint8_t name_length = 0;
+      while (infos[i].name[name_length])
+        ++name_length;
+
+      memcpy(path_builder + path_builder_len, infos[i].name, name_length + 1);
+      path_builder_len += name_length;
+
+      tree(d);
+
+      path_builder_len -= name_length;
+      path_builder[path_builder_len] = '\0';
+
+      indent_builder_len -= 2;
+      indent_builder[indent_builder_len] = '\0';
+    }
+
+    else {
+      u32_dec(infos[i].size, nbuf2);
+      logsz(" (");
+      logsz(nbuf2);
+      logsz(" bytes)\n");
+    }
+  }
+}
\ No newline at end of file