From a2fdfee02a0bfca745102adf390f3fb3e52a4035 Mon Sep 17 00:00:00 2001
From: elasota <1137273+elasota@users.noreply.github.com>
Date: Tue, 6 Aug 2024 23:49:32 -0400
Subject: [PATCH] Remove unused functions from tool shim, add int64 file ops

---
 .../UnixUnicodeToolShim.cpp                   | 11 ++++
 .../WindowsUnicodeToolShim.cpp                | 51 ++-----------------
 .../WindowsUnicodeToolShim.h                  | 22 ++------
 unpacktool/unpacktool.cpp                     |  8 +--
 4 files changed, 22 insertions(+), 70 deletions(-)

diff --git a/WindowsUnicodeToolShim/UnixUnicodeToolShim.cpp b/WindowsUnicodeToolShim/UnixUnicodeToolShim.cpp
index 65f09c6..1021e8f 100644
--- a/WindowsUnicodeToolShim/UnixUnicodeToolShim.cpp
+++ b/WindowsUnicodeToolShim/UnixUnicodeToolShim.cpp
@@ -1,3 +1,4 @@
+#define _FILE_OFFSET_BITS 64
 #include "WindowsUnicodeToolShim.h"
 
 #include <cstdio>
@@ -97,3 +98,13 @@ void ScanDirectoryForExtension
 	}
 	closedir(dir);
 }
+
+int fseek_int64(FILE *f, int64_t offset, int origin)
+{
+	return fseeko(f, static_cast<off_t>(offset), origin);
+}
+
+int64_t ftell_int64(FILE *f)
+{
+	return static_cast<int64_t>(ftello(f));
+}
diff --git a/WindowsUnicodeToolShim/WindowsUnicodeToolShim.cpp b/WindowsUnicodeToolShim/WindowsUnicodeToolShim.cpp
index 5caae6a..c42af7c 100644
--- a/WindowsUnicodeToolShim/WindowsUnicodeToolShim.cpp
+++ b/WindowsUnicodeToolShim/WindowsUnicodeToolShim.cpp
@@ -123,57 +123,14 @@ void ScanDirectoryForExtension(std::vector<std::string> &outPaths, const char *p
 	FindClose(h);
 }
 
-struct DirectoryScanContext
+int fseek_int64(FILE *f, int64_t offset, int origin)
 {
-	WIN32_FIND_DATAW m_findDataW;
-	HANDLE m_handle;
-	bool m_first;
-
-	std::string m_utf8Name;
-	DirectoryScanEntry m_currentEntry;
-};
-
-static void ParseDirEntry(DirectoryScanContext &context)
-{
-	context.m_utf8Name = ConvertWStringToUTF8(context.m_findDataW.cFileName);
-	context.m_currentEntry.m_name = context.m_utf8Name.c_str();
+	return _fseeki64(f, offset, origin);
 }
 
-DirectoryScanContext *opendir_utf8(const char *name)
+int64_t ftell_int64(FILE *f)
 {
-	DirectoryScanContext *context = new DirectoryScanContext();
-
-	std::wstring dirFilter = std::wstring(L"\\\\?\\") + ConvertUTF8ToWString(name) + L"\\*";
-
-	context->m_handle = FindFirstFileW(dirFilter.c_str(), &context->m_findDataW);
-	if (context->m_handle == INVALID_HANDLE_VALUE)
-	{
-		delete context;
-		return nullptr;
-	}
-
-	context->m_first = true;
-	return context;
-}
-
-DirectoryScanEntry *readdir_utf8(DirectoryScanContext *dir)
-{
-	if (dir->m_first)
-		dir->m_first = false;
-	else
-	{
-		if (!FindNextFileW(dir->m_handle, &dir->m_findDataW))
-			return nullptr;
-	}
-
-	ParseDirEntry(*dir);
-	return &dir->m_currentEntry;
-}
-
-void closedir_utf8(DirectoryScanContext *context)
-{
-	FindClose(context->m_handle);
-	delete context;
+	return _ftelli64(f);
 }
 
 int toolMain(int argc, const char **argv);
diff --git a/WindowsUnicodeToolShim/WindowsUnicodeToolShim.h b/WindowsUnicodeToolShim/WindowsUnicodeToolShim.h
index 2396c69..1d4d863 100644
--- a/WindowsUnicodeToolShim/WindowsUnicodeToolShim.h
+++ b/WindowsUnicodeToolShim/WindowsUnicodeToolShim.h
@@ -1,28 +1,12 @@
 #include <string>
 #include <vector>
+#include <cstdint>
 #include <stdio.h>
 
 FILE *fopen_utf8(const char *path, const char *options);
+int fseek_int64(FILE *f, int64_t offset, int origin);
+int64_t ftell_int64(FILE *f);
 int fputs_utf8(const char *str, FILE *f);
 int mkdir_utf8(const char *path);
 void TerminateDirectoryPath(std::string &path);
 void ScanDirectoryForExtension(std::vector<std::string>& outPaths, const char *path, const char *ending, bool recursive);
-
-#ifdef _WIN32
-struct DirectoryScanContext;
-struct DirectoryScanEntry
-{
-	const char *m_name;
-};
-
-DirectoryScanContext *opendir_utf8(const char *name);
-DirectoryScanEntry *readdir_utf8(DirectoryScanContext *dir);
-void closedir_utf8(DirectoryScanContext *context);
-
-#else
-
-inline int _fseeki64(FILE *stream, long offset, int whence) {
-	return fseek(stream, offset, whence);
-}
-inline long _ftelli64(FILE *stream) { return ftell(stream); };
-#endif
diff --git a/unpacktool/unpacktool.cpp b/unpacktool/unpacktool.cpp
index 7defb39..855362b 100644
--- a/unpacktool/unpacktool.cpp
+++ b/unpacktool/unpacktool.cpp
@@ -70,22 +70,22 @@ size_t CFileReader::FileSize() const
 
 bool CFileReader::SeekStart(FilePos_t pos)
 {
-	return !_fseeki64(m_file, pos, SEEK_SET);
+	return !fseek_int64(m_file, pos, SEEK_SET);
 }
 
 bool CFileReader::SeekCurrent(FilePos_t pos)
 {
-	return !_fseeki64(m_file, pos, SEEK_CUR);
+	return !fseek_int64(m_file, pos, SEEK_CUR);
 }
 
 bool CFileReader::SeekEnd(FilePos_t pos)
 {
-	return !_fseeki64(m_file, pos, SEEK_END);
+	return !fseek_int64(m_file, pos, SEEK_END);
 }
 
 IFileReader::FilePos_t CFileReader::GetPosition() const
 {
-	return _ftelli64(m_file);
+	return ftell_int64(m_file);
 }
 
 StuffItParser g_stuffItParser;