88: Add nob_delete_dir

nob.h

@@ -285,6 +285,7 @@ NOBDEF bool nob_read_entire_dir(const char *parent, Nob_File_Paths *children);
 NOBDEF bool nob_write_entire_file(const char *path, const void *data, size_t size);
 NOBDEF Nob_File_Type nob_get_file_type(const char *path);
 NOBDEF bool nob_delete_file(const char *path);
+NOBDEF bool nob_delete_dir(const char *path);
 
 #define nob_return_defer(value) do { result = (value); goto defer; } while(0)
 
@@ -1422,6 +1423,47 @@ NOBDEF bool nob_delete_file(const char *path)
 #endif // _WIN32
 }
 
+NOBDEF bool nob_delete_dir(const char *path)
+{
+    bool result = true;
+    nob_log(NOB_INFO, "deleting %s", path);
+    Nob_File_Paths children = {0};
+    if (!nob_read_entire_dir(path, &children)) return false;
+    for (size_t i = 0; i < children.count; ++i) {
+        const char *child = children.items[i];
+        Nob_String_Builder child_path = {0};
+        nob_sb_append_cstr(&child_path, path);
+        nob_sb_append_cstr(&child_path, "/");
+        nob_sb_append_cstr(&child_path, child);
+        nob_sb_append_null(&child_path);
+        Nob_File_Type type = nob_get_file_type(child_path.items);
+        if (type < 0) {
+            nob_return_defer(false);
+        }
+        if (type == NOB_FILE_DIRECTORY) {
+            if (strcmp(child, ".") != 0 && strcmp(child, "..") != 0) {
+                if (!nob_delete_dir(child_path.items)) {
+                    nob_return_defer(false);
+                }
+            }
+        } else {
+            if (!nob_delete_file(child_path.items)) {
+                nob_return_defer(false);
+            }
+        }
+        nob_sb_free(child_path);
+        continue;
+
+        defer:
+            nob_sb_free(child_path);
+            return result;
+    }
+    if (!nob_delete_file(path)) {
+        result = false;
+    }
+    return result;
+}
+
 NOBDEF bool nob_copy_directory_recursively(const char *src_path, const char *dst_path)
 {
     bool result = true;
@@ -2003,6 +2045,7 @@ NOBDEF int closedir(DIR *dirp)
         #define write_entire_file nob_write_entire_file
         #define get_file_type nob_get_file_type
         #define delete_file nob_delete_file
+        #define delete_dir nob_delete_dir
         #define return_defer nob_return_defer
         #define da_append nob_da_append
         #define da_free nob_da_free

tests/delete_dir.c

@@ -0,0 +1,41 @@
+#include "shared.h"
+#define NOB_IMPLEMENTATION
+#define NOB_STRIP_PREFIX
+#include "nob.h"
+
+bool create_dirs()
+{
+    if (!nob_mkdir_if_not_exists("delete_dir")) return false;
+    if (!nob_mkdir_if_not_exists("delete_dir/nested")) return false;
+    if (!write_entire_file("delete_dir/bar.txt", NULL, 0)) return false;
+    if (!write_entire_file("delete_dir/baz.txt", NULL, 0)) return false;
+    if (!write_entire_file("delete_dir/nested/foo.txt", NULL, 0)) return false;
+    if (!write_entire_file("delete_dir/nested/bar.txt", NULL, 0)) return false;
+    if (!write_entire_file("delete_dir/nested/baz.txt", NULL, 0)) return false;
+    return true;
+}
+
+bool delete_dir_without_symlinks()
+{
+    if (!create_dirs()) return false;
+    if (!nob_delete_dir("delete_dir")) return false;
+    if (nob_file_exists("delete_dir")) return false;
+    return true;
+}
+
+bool delete_dir_with_symlinks()
+{
+    if (!create_dirs()) return false;
+    if (symlink("delete_dir/nested", "delete_dir/nested/link") != 0) return false;
+    if (!nob_delete_dir("delete_dir")) return false;
+    if (nob_file_exists("delete_dir")) return false;
+    return true;
+}
+
+int main(void)
+{
+    if (!delete_dir_without_symlinks()) return 1;
+    if (!delete_dir_with_symlinks()) return 1;
+
+    return 0;
+}