start working on streaming write

arrow/xlntarrow/xlntarrow.cpp

@@ -30,9 +30,29 @@ void xlsx2arrow(std::istream &s, ::arrow::Table &table)
     reader.end_worksheet();
 }
 
-void arrow2xlsx(const ::arrow::Table &table, std::istream &s)
+void arrow2xlsx(const ::arrow::Table &table, std::ostream &s)
 {
+  xlnt::streaming_workbook_writer writer;
+  writer.open(s);
 
+  writer.begin_worksheet();
+
+  while (reader.has_cell())
+  {
+      auto cell = reader.read_cell();
+
+      if (first_row < 1)
+      {
+          first_row = cell.row();
+      }
+
+      if (cell.reference().row() % 1000 == 1)
+      {
+          std::cout << cell.reference().to_string() << std::endl;
+      }
+  }
+
+  reader.end_worksheet();
 }
 
 }

arrow/xlntarrow/xlntarrow.hpp

@@ -6,7 +6,7 @@ namespace xlnt {
 namespace arrow {
 
 void XLNT_API xlsx2arrow(std::istream &s, ::arrow::Table &table);
-void XLNT_API arrow2xlsx(const ::arrow::Table &table, std::istream &s);
+void XLNT_API arrow2xlsx(const ::arrow::Table &table, std::ostream &s);
 
 }
 }

include/xlnt/workbook/streaming_workbook_writer.hpp

@@ -28,14 +28,23 @@
 
 #include <xlnt/xlnt_config.hpp>
 
+namespace xml {
+class serializer;
+}
+
 namespace xlnt {
 
+namespace detail {
+class xlsx_producer;
+} // namespace detail
+
 /// <summary>
 /// workbook is the container for all other parts of the document.
 /// </summary>
 class XLNT_API streaming_workbook_writer
 {
 public:
+    streaming_workbook_writer();
     ~streaming_workbook_writer();
 
     /// <summary>
@@ -56,38 +65,46 @@ public:
     /// Ends writing of data to the current sheet and begins writing a new sheet
     /// with the given title.
     /// </summary>
-    worksheet add_sheet(const std::string &title);
+    worksheet add_worksheet(const std::string &title);
 
     /// <summary>
     /// Serializes the workbook into an XLSX file and saves the bytes into
     /// byte vector data.
     /// </summary>
-    void open(std::vector<std::uint8_t> &data) const;
+    void open(std::vector<std::uint8_t> &data);
 
     /// <summary>
     /// Serializes the workbook into an XLSX file and saves the data into a file
     /// named filename.
     /// </summary>
-    void open(const std::string &filename) const;
+    void open(const std::string &filename);
 
 #ifdef _MSC_VER
     /// <summary>
     /// Serializes the workbook into an XLSX file and saves the data into a file
     /// named filename.
     /// </summary>
-    void open(const std::wstring &filename) const;
+    void open(const std::wstring &filename);
 #endif
 
     /// <summary>
     /// Serializes the workbook into an XLSX file and saves the data into a file
     /// named filename.
     /// </summary>
-    void open(const xlnt::path &filename) const;
+    void open(const xlnt::path &filename);
 
     /// <summary>
     /// Serializes the workbook into an XLSX file and saves the data into stream.
     /// </summary>
-    void open(std::ostream &stream) const;
+    void open(std::ostream &stream);
+
+    std::unique_ptr<xlnt::detail::xlsx_producer> producer_;
+    std::unique_ptr<workbook> workbook_;
+    std::unique_ptr<std::ostream> stream_;
+    std::unique_ptr<std::streambuf> stream_buffer_;
+    std::unique_ptr<std::ostream> part_stream_;
+    std::unique_ptr<std::streambuf> part_stream_buffer_;
+    std::unique_ptr<xml::serializer> serializer_;
 };
 
 } // namespace xlnt

source/detail/cryptography/xlsx_crypto_producer.cpp

@@ -32,6 +32,7 @@
 #include <detail/external/include_libstudxml.hpp>
 #include <detail/serialization/vector_streambuf.hpp>
 #include <detail/serialization/xlsx_producer.hpp>
+#include <detail/serialization/zstream.hpp>
 #include <xlnt/utils/exceptions.hpp>
 
 namespace {
@@ -314,6 +315,7 @@ void xlsx_producer::write(std::ostream &destination, const std::string &password
     vector_ostreambuf plaintext_buffer(plaintext);
     std::ostream decrypted_stream(&plaintext_buffer);
     write(decrypted_stream);
+    archive_.reset();
 
     const auto ciphertext = ::encrypt_xlsx(plaintext, utf8_to_utf16(password));
     vector_istreambuf encrypted_buffer(ciphertext);

source/detail/serialization/open_stream.cpp

@@ -0,0 +1,63 @@
+// Copyright (c) 2017 Thomas Fussell
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, WRISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE
+//
+// @license: http://www.opensource.org/licenses/mit-license.php
+// @author: see AUTHORS file
+
+#include <detail/serialization/open_stream.hpp>
+#include <xlnt/utils/path.hpp>
+
+namespace xlnt {
+namespace detail {
+
+#ifdef _MSC_VER
+void open_stream(std::ifstream &stream, const std::wstring &path)
+{
+    stream.open(path, std::ios::binary);
+}
+
+void open_stream(std::ofstream &stream, const std::wstring &path)
+{
+    stream.open(path, std::ios::binary);
+}
+
+void open_stream(std::ifstream &stream, const std::string &path)
+{
+    open_stream(stream, xlnt::path(path).wstring());
+}
+
+void open_stream(std::ofstream &stream, const std::string &path)
+{
+    open_stream(stream, xlnt::path(path).wstring());
+}
+#else
+void open_stream(std::ifstream &stream, const std::string &path)
+{
+    stream.open(path, std::ios::binary);
+}
+
+void open_stream(std::ofstream &stream, const std::string &path)
+{
+    stream.open(path, std::ios::binary);
+}
+#endif
+
+} // namespace detail
+} // namespace xlnt

source/detail/serialization/open_stream.hpp

@@ -0,0 +1,48 @@
+// Copyright (c) 2017 Thomas Fussell
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, WRISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE
+//
+// @license: http://www.opensource.org/licenses/mit-license.php
+// @author: see AUTHORS file
+
+#pragma once
+
+#include <fstream>
+#include <iostream>
+#include <string>
+
+namespace xlnt {
+namespace detail {
+
+#ifdef _MSC_VER
+void open_stream(std::ifstream &stream, const std::wstring &path);
+
+void open_stream(std::ofstream &stream, const std::wstring &path);
+
+void open_stream(std::ifstream &stream, const std::string &path);
+
+void open_stream(std::ofstream &stream, const std::string &path);
+#else
+void open_stream(std::ifstream &stream, const std::string &path);
+
+void open_stream(std::ofstream &stream, const std::string &path);
+#endif
+
+} // namespace detail
+} // namespace xlnt

source/detail/serialization/xlsx_producer.cpp

@@ -90,17 +90,40 @@ xlsx_producer::xlsx_producer(const workbook &target)
 {
 }
 
+xlsx_producer::~xlsx_producer()
+{
+    end_part();
+    archive_.reset();
+}
+
 void xlsx_producer::write(std::ostream &destination)
 {
-    ozstream archive(destination);
+    archive_.reset(new ozstream(destination));
-    archive_ = &archive;
+    populate_archive(false);
-    populate_archive();
+}
+
+void xlsx_producer::open(std::ostream &destination)
+{
+    archive_.reset(new ozstream(destination));
+    populate_archive(true);
+}
+
+cell xlsx_producer::add_cell(const cell_reference &ref)
+{
+    return cell(current_cell_);
+}
+
+worksheet xlsx_producer::add_worksheet(const std::string &title)
+{
+    return worksheet(current_worksheet_);
 }
 
 // Part Writing Methods
 
-void xlsx_producer::populate_archive()
+void xlsx_producer::populate_archive(bool streaming)
 {
+    streaming_ = streaming;
+
     write_content_types();
 
     const auto root_rels = source_.manifest().relationships(path("/"));

source/detail/serialization/xlsx_producer.hpp

@@ -38,12 +38,14 @@ class serializer;
 namespace xlnt {
 
 class border;
+class cell;
 class cell_reference;
 class color;
 class fill;
 class font;
 class path;
 class relationship;
+class streaming_workbook_writer;
 class variant;
 class workbook;
 class worksheet;
@@ -51,6 +53,8 @@ class worksheet;
 namespace detail {
 
 class ozstream;
+struct cell_impl;
+struct worksheet_impl;
 
 /// <summary>
 /// Handles writing a workbook into an XLSX file.
@@ -60,16 +64,26 @@ class xlsx_producer
 public:
 	xlsx_producer(const workbook &target);
 
+    ~xlsx_producer();
+
 	void write(std::ostream &destination);
 
     void write(std::ostream &destination, const std::string &password);
 
 private:
+    friend class xlnt::streaming_workbook_writer;
+
+    void open(std::ostream &destination);
+
+    cell add_cell(const cell_reference &ref);
+
+    worksheet add_worksheet(const std::string &title);
+
 	/// <summary>
 	/// Write all files needed to create a valid XLSX file which represents all
 	/// data contained in workbook.
 	/// </summary>
-	void populate_archive();
+	void populate_archive(bool streaming);
 
     void begin_part(const path &part);
     void end_part();
@@ -179,10 +193,18 @@ private:
 	/// </summary>
 	const workbook &source_;
     
-	ozstream *archive_;
+	std::unique_ptr<ozstream> archive_;
     std::unique_ptr<xml::serializer> current_part_serializer_;
     std::unique_ptr<std::streambuf> current_part_streambuf_;
     std::ostream current_part_stream_;
+
+    bool streaming_ = false;
+
+    std::unique_ptr<detail::cell_impl> streaming_cell_;
+
+    detail::cell_impl *current_cell_;
+
+    detail::worksheet_impl *current_worksheet_;
 };
 
 } // namespace detail

source/workbook/streaming_workbook_reader.cpp

@@ -23,6 +23,7 @@
 
 #include <fstream>
 
+#include <detail/serialization/open_stream.hpp>
 #include <detail/serialization/vector_streambuf.hpp>
 #include <detail/serialization/xlsx_consumer.hpp>
 #include <xlnt/cell/cell.hpp>
@@ -32,45 +33,6 @@
 #include <xlnt/workbook/workbook.hpp>
 #include <xlnt/worksheet/worksheet.hpp>
 
-
-namespace {
-
-//TODO: (important) this is duplicated from workbook.cpp, find a common place to keep it
-#ifdef _MSC_VER
-void open_stream(std::ifstream &stream, const std::wstring &path)
-{
-    stream.open(path, std::ios::binary);
-}
-
-void open_stream(std::ofstream &stream, const std::wstring &path)
-{
-    stream.open(path, std::ios::binary);
-}
-
-void open_stream(std::ifstream &stream, const std::string &path)
-{
-    open_stream(stream, xlnt::path(path).wstring());
-}
-
-void open_stream(std::ofstream &stream, const std::string &path)
-{
-    open_stream(stream, xlnt::path(path).wstring());
-}
-#else
-void open_stream(std::ifstream &stream, const std::string &path)
-{
-    stream.open(path, std::ios::binary);
-}
-
-void open_stream(std::ofstream &stream, const std::string &path)
-{
-    stream.open(path, std::ios::binary);
-}
-#endif
-
-} // namespace
-
-
 namespace xlnt {
 
 streaming_workbook_reader::streaming_workbook_reader()
@@ -145,7 +107,7 @@ void streaming_workbook_reader::open(const std::vector<std::uint8_t> &data)
 void streaming_workbook_reader::open(const std::string &filename)
 {
     stream_.reset(new std::ifstream());
-    open_stream((std::ifstream &)stream_, filename);
+    xlnt::detail::open_stream((std::ifstream &)stream_, filename);
     open(*stream_);
 }
 
@@ -153,7 +115,7 @@ void streaming_workbook_reader::open(const std::string &filename)
 void streaming_workbook_reader::open(const std::wstring &filename)
 {
     stream_.reset(new std::ifstream());
-    open_stream((std::ifstream &)*stream_, filename);
+    xlnt::detail::open_stream((std::ifstream &)*stream_, filename);
     open(*stream_);
 }
 #endif
@@ -161,7 +123,7 @@ void streaming_workbook_reader::open(const std::wstring &filename)
 void streaming_workbook_reader::open(const xlnt::path &filename)
 {
     stream_.reset(new std::ifstream());
-    open_stream((std::ifstream &)*stream_, filename.string());
+    xlnt::detail::open_stream((std::ifstream &)*stream_, filename.string());
     open(*stream_);
 }
 

source/workbook/streaming_workbook_writer.cpp

@@ -0,0 +1,109 @@
+// Copyright (c) 2017 Thomas Fussell
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, WRISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE
+//
+// @license: http://www.opensource.org/licenses/mit-license.php
+// @author: see AUTHORS file
+
+#include <fstream>
+
+#include <detail/implementations/cell_impl.hpp>
+#include <detail/implementations/worksheet_impl.hpp>
+#include <detail/serialization/open_stream.hpp>
+#include <detail/serialization/vector_streambuf.hpp>
+#include <detail/serialization/xlsx_producer.hpp>
+#include <xlnt/cell/cell.hpp>
+#include <xlnt/packaging/manifest.hpp>
+#include <xlnt/utils/optional.hpp>
+#include <xlnt/workbook/streaming_workbook_writer.hpp>
+#include <xlnt/workbook/workbook.hpp>
+#include <xlnt/worksheet/worksheet.hpp>
+
+namespace xlnt {
+
+streaming_workbook_writer::streaming_workbook_writer()
+{
+
+}
+
+streaming_workbook_writer::~streaming_workbook_writer()
+{
+    close();
+}
+
+void streaming_workbook_writer::close()
+{
+    if (producer_)
+    {
+        producer_.reset(nullptr);
+        stream_buffer_.reset(nullptr);
+    }
+}
+
+cell streaming_workbook_writer::add_cell(const cell_reference &ref)
+{
+    return producer_->add_cell(ref);
+}
+
+worksheet streaming_workbook_writer::add_worksheet(const std::string &title)
+{
+    return producer_->add_worksheet(title);
+}
+
+void streaming_workbook_writer::open(std::vector<std::uint8_t> &data)
+{
+    stream_buffer_.reset(new detail::vector_ostreambuf(data));
+    stream_.reset(new std::ostream(stream_buffer_.get()));
+    open(*stream_);
+}
+
+void streaming_workbook_writer::open(const std::string &filename)
+{
+    stream_.reset(new std::ofstream());
+    xlnt::detail::open_stream(static_cast<std::ofstream &>(*stream_), filename);
+    open(*stream_);
+}
+
+#ifdef _MSC_VER
+void streaming_workbook_writer::open(const std::wstring &filename)
+{
+    stream_.reset(new std::ofstream());
+    xlnt::detail::open_stream(static_cast<std::ofstream &>(*stream_), filename);
+    open(*stream_);
+}
+#endif
+
+void streaming_workbook_writer::open(const xlnt::path &filename)
+{
+    stream_.reset(new std::ofstream());
+    xlnt::detail::open_stream(static_cast<std::ofstream &>(*stream_), filename.string());
+    open(*stream_);
+}
+
+void streaming_workbook_writer::open(std::ostream &stream)
+{
+    workbook_.reset(new workbook());
+    producer_.reset(new detail::xlsx_producer(*workbook_));
+    producer_->open(stream);
+    producer_->current_worksheet_ = new detail::worksheet_impl(workbook_.get(), 1, "Sheet1");
+    producer_->current_cell_ = new detail::cell_impl();
+    producer_->current_cell_->parent_ = producer_->current_worksheet_;
+}
+
+} // namespace xlnt

source/workbook/workbook.cpp

@@ -35,6 +35,7 @@
 #include <detail/implementations/worksheet_impl.hpp>
 #include <detail/serialization/excel_thumbnail.hpp>
 #include <detail/serialization/vector_streambuf.hpp>
+#include <detail/serialization/open_stream.hpp>
 #include <detail/serialization/xlsx_consumer.hpp>
 #include <detail/serialization/xlsx_producer.hpp>
 #include <xlnt/cell/cell.hpp>
@@ -63,37 +64,7 @@
 
 namespace {
 
-#ifdef _MSC_VER
+using xlnt::detail::open_stream;
-void open_stream(std::ifstream &stream, const std::wstring &path)
-{
-    stream.open(path, std::ios::binary);
-}
-
-void open_stream(std::ofstream &stream, const std::wstring &path)
-{
-    stream.open(path, std::ios::binary);
-}
-
-void open_stream(std::ifstream &stream, const std::string &path)
-{
-    open_stream(stream, xlnt::path(path).wstring());
-}
-
-void open_stream(std::ofstream &stream, const std::string &path)
-{
-    open_stream(stream, xlnt::path(path).wstring());
-}
-#else
-void open_stream(std::ifstream &stream, const std::string &path)
-{
-    stream.open(path, std::ios::binary);
-}
-
-void open_stream(std::ofstream &stream, const std::string &path)
-{
-    stream.open(path, std::ios::binary);
-}
-#endif
 
 template<typename T>
 std::vector<T> keys(const std::vector<std::pair<T, xlnt::variant>> &container)

tests/workbook/serialization_test_suite.hpp

@@ -59,7 +59,7 @@ public:
         register_test(test_round_trip_rw);
         register_test(test_round_trip_rw_encrypted);
         register_test(test_streaming_read);
-        //register_test(test_streaming_write);
+        register_test(test_streaming_write);
     }
 
 	bool workbook_matches_file(xlnt::workbook &wb, const xlnt::path &file)
@@ -494,7 +494,7 @@ public:
 
         writer.open(path);
 
-        writer.add_sheet("stream");
+        writer.add_worksheet("stream");
 
         auto b2 = writer.add_cell("B2");
         b2.value("B2!");