add windows implementation of path_parent()

1 files changed, 16 insertions, 1 deletions

diff --git a/src/platform/path.c b/src/platform/path.c
index 31fa59c..3607089 100644
--- a/src/platform/path.c
+++ b/src/platform/path.c
@@ -16,5 +16,20 @@ path_opt path_parent(arena* a, const char* path) {
 }
 #endif
 #ifdef CEL_PLATFORM_WINDOWS
-path_opt path_parent(arena* a, const char* path) {}
+#include <windows.h>
+#include <shlwapi.h>
+#pragma comment(lib, "Shlwapi.lib")
+
+path_opt path_parent(arena* a, const char* path) {
+  // Duplicate the string because PathRemoveFileSpec mutates in-place
+  size_t len = strlen(path) + 1;
+  char* path_copy = arena_alloc(a, len);
+  strcpy_s(path_copy, len, path);
+
+  if (PathRemoveFileSpecA(path_copy)) {
+    return (path_opt){ .path = Str8_cstr_view(path_copy), .has_value = true };
+  } else {
+    return (path_opt){ .has_value = false};
+  }
+}
 #endif