initial implementation of wstring filenames

include/xlnt/workbook/workbook.hpp

@@ -370,6 +370,14 @@ public:
 	void load(std::istream &stream, const std::string &password);
 	void load(const std::vector<std::uint8_t> &data, const std::string &password);
 
+#ifdef WIN32
+    void save(const std::wstring &filename);
+    void save(const std::wstring &filename, const std::string &password);
+
+    void load(const std::wstring &filename);
+    void load(const std::wstring &filename, const std::string &password);
+#endif
+
 	bool has_view() const;
 	workbook_view get_view() const;
 	void set_view(const workbook_view &view);

source/workbook/tests/test_consume_xlsx.hpp

@@ -1,4 +1,4 @@
-#pragma once
+#pragma once
 
 #include <fstream>
 #include <iostream>
@@ -7,7 +7,7 @@
 #include <helpers/path_helper.hpp>
 #include <xlnt/workbook/workbook.hpp>
 
-#define TEST_CRYPTO true
+#define TEST_CRYPTO false
 
 #ifndef TEST_CRYPTO
 #define TEST_CRYPTO false
@@ -64,4 +64,10 @@ public:
         TS_ASSERT_EQUALS(sheet2.get_cell("A1").comment().plain_text(), "Sheet2 comment");
         TS_ASSERT_EQUALS(sheet2.get_cell("A1").comment().author(), "Microsoft Office User");
     }
+
+    void test_read_unicode_filename()
+    {
+        xlnt::workbook wb;
+        wb.load(L"data\\19_unicode_Λ.xlsx");
+    }
 };

source/workbook/workbook.cpp

@@ -686,11 +686,9 @@ void workbook::load(std::istream &stream)
 
 void workbook::load(const std::vector<std::uint8_t> &data)
 {
-	clear();
-	detail::xlsx_consumer consumer(*this);
     xlnt::detail::vector_istreambuf data_buffer(data);
     std::istream data_stream(&data_buffer);
-	consumer.read(data_stream);
+    load(data_stream);
 }
 
 void workbook::load(const std::string &filename)
@@ -700,10 +698,8 @@ void workbook::load(const std::string &filename)
 
 void workbook::load(const path &filename)
 {
-	clear();
-	detail::xlsx_consumer consumer(*this);
 	std::ifstream file_stream(filename.string(), std::ios::binary);
-	consumer.read(file_stream);
+    load(file_stream);
 }
 
 void workbook::load(const std::string &filename, const std::string &password)
@@ -719,11 +715,9 @@ void workbook::load(const path &filename, const std::string &password)
 
 void workbook::load(const std::vector<std::uint8_t> &data, const std::string &password)
 {
-	clear();
-	detail::xlsx_consumer consumer(*this);
     xlnt::detail::vector_istreambuf data_buffer(data);
     std::istream data_stream(&data_buffer);
-	consumer.read(data_stream, password);
+    load(data_stream, password);
 }
 
 void workbook::load(std::istream &stream, const std::string &password)
@@ -747,7 +741,6 @@ void workbook::save(const std::string &filename) const
 
 void workbook::save(const path &filename) const
 {
-	detail::xlsx_producer producer(*this);
 	std::ofstream file_stream(filename.string(), std::ios::binary);
 	save(file_stream);
 }
@@ -758,6 +751,20 @@ void workbook::save(std::ostream &stream) const
 	producer.write(stream);
 }
 
+#ifdef WIN32
+void workbook::save(const std::wstring &filename)
+{
+    std::ofstream file_stream(filename, std::ios::binary);
+    save(file_stream);
+}
+
+void workbook::load(const std::wstring &filename)
+{
+    std::ifstream file_stream(filename, std::ios::binary);
+    load(file_stream);
+}
+#endif
+
 void workbook::set_guess_types(bool guess)
 {
     d_->guess_types_ = guess;