Initial Unicode support for command line arguments on Windows

include/dwarfs/builtin_script.h

@@ -21,6 +21,7 @@
 
 #pragma once
 
+#include <filesystem>
 #include <iosfwd>
 #include <memory>
 #include <string>
@@ -38,7 +39,9 @@ class builtin_script : public script {
   builtin_script(logger& lgr);
   ~builtin_script();
 
-  void set_root_path(std::string const& path) { impl_->set_root_path(path); }
+  void set_root_path(std::filesystem::path const& path) {
+    impl_->set_root_path(path);
+  }
   void add_filter_rule(std::string const& rule) {
     impl_->add_filter_rule(rule);
   }
@@ -62,7 +65,7 @@ class builtin_script : public script {
    public:
     virtual ~impl() = default;
 
-    virtual void set_root_path(std::string const& path) = 0;
+    virtual void set_root_path(std::filesystem::path const& path) = 0;
     virtual void add_filter_rule(std::string const& rule) = 0;
     virtual void add_filter_rules(std::istream& is) = 0;
     virtual void add_transformer(std::unique_ptr<entry_transformer>&& xfm) = 0;

include/dwarfs/program_options_helpers.h

@@ -0,0 +1,42 @@
+/* vim:set ts=2 sw=2 sts=2 et: */
+/**
+ * \author     Marcus Holland-Moritz (github@mhxnet.de)
+ * \copyright  Copyright (c) Marcus Holland-Moritz
+ *
+ * This file is part of dwarfs.
+ *
+ * dwarfs is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * dwarfs is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with dwarfs.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <boost/program_options.hpp>
+
+#include "dwarfs/types.h"
+
+namespace dwarfs {
+
+#ifdef _WIN32
+template <typename T>
+auto po_sys_value(T* v) {
+  return boost::program_options::wvalue<T>(v);
+}
+#else
+template <typename T>
+auto po_sys_value(T* v) {
+  return boost::program_options::value<T>(v);
+}
+#endif
+
+} // namespace dwarfs

include/dwarfs/types.h

@@ -30,9 +30,11 @@ using file_off_t = int64_t;
 #ifdef _WIN32
 using sys_char = wchar_t;
 using sys_string = std::wstring;
+#define SYS_CERR std::wcerr
 #else
 using sys_char = char;
 using sys_string = std::string;
+#define SYS_CERR std::cerr
 #endif
 
 } // namespace dwarfs

src/dwarfs/builtin_script.cpp

@@ -30,6 +30,7 @@
 #include "dwarfs/entry_interface.h"
 #include "dwarfs/entry_transformer.h"
 #include "dwarfs/logger.h"
+#include "dwarfs/util.h"
 
 namespace dwarfs {
 
@@ -57,7 +58,7 @@ class builtin_script_ : public builtin_script::impl {
  public:
   builtin_script_(logger& lgr);
 
-  void set_root_path(std::string const& path) override;
+  void set_root_path(std::filesystem::path const& path) override;
   void add_filter_rule(std::string const& rule) override;
   void add_filter_rules(std::istream& is) override;
 
@@ -182,8 +183,10 @@ builtin_script_<LoggerPolicy>::builtin_script_(logger& lgr)
     : log_(lgr) {}
 
 template <typename LoggerPolicy>
-void builtin_script_<LoggerPolicy>::set_root_path(std::string const& path) {
-  root_path_ = path;
+void builtin_script_<LoggerPolicy>::set_root_path(
+    std::filesystem::path const& path) {
+  // TODO: this whole thing needs to be windowsized
+  root_path_ = u8string_to_string(path.u8string());
 }
 
 template <typename LoggerPolicy>

src/mkdwarfs_main.cpp

@@ -71,6 +71,7 @@
 #include "dwarfs/options.h"
 #include "dwarfs/options_interface.h"
 #include "dwarfs/os_access_generic.h"
+#include "dwarfs/program_options_helpers.h"
 #include "dwarfs/progress.h"
 #include "dwarfs/scanner.h"
 #include "dwarfs/script.h"
@@ -378,11 +379,11 @@ int mkdwarfs_main(int argc, sys_char** argv) {
   const size_t num_cpu = std::max(folly::hardware_concurrency(), 1u);
 
   block_manager::config cfg;
-  std::string path, output, memory_limit, script_arg, compression, header,
-      schema_compression, metadata_compression, log_level_str, timestamp,
-      time_resolution, order, progress_mode, recompress_opts, pack_metadata,
-      file_hash_algo, debug_filter, max_similarity_size, input_list_str,
-      chmod_str;
+  sys_string path_str, output_str;
+  std::string memory_limit, script_arg, compression, header, schema_compression,
+      metadata_compression, log_level_str, timestamp, time_resolution, order,
+      progress_mode, recompress_opts, pack_metadata, file_hash_algo,
+      debug_filter, max_similarity_size, input_list_str, chmod_str;
   std::vector<std::string> filter;
   size_t num_workers, num_scanner_workers;
   bool no_progress = false, remove_header = false, no_section_index = false,
@@ -416,13 +417,13 @@ int mkdwarfs_main(int argc, sys_char** argv) {
   po::options_description opts("Command line options");
   opts.add_options()
     ("input,i",
-        po::value<std::string>(&path),
+        po_sys_value<sys_string>(&path_str),
         "path to root directory or source filesystem")
     ("input-list",
         po::value<std::string>(&input_list_str),
         "file containing list of paths relative to root directory")
     ("output,o",
-        po::value<std::string>(&output),
+        po_sys_value<sys_string>(&output_str),
         "filesystem output name")
     ("force,f",
         po::value<bool>(&force_overwrite)->zero_tokens(),
@@ -549,6 +550,8 @@ int mkdwarfs_main(int argc, sys_char** argv) {
 
   po::variables_map vm;
 
+  auto& err_out = SYS_CERR;
+
   try {
     auto parsed = po::parse_command_line(argc, argv, opts);
 
@@ -559,8 +562,8 @@ int mkdwarfs_main(int argc, sys_char** argv) {
         po::collect_unrecognized(parsed.options, po::include_positional);
 
     if (!unrecognized.empty()) {
-      std::wcerr << "error: unrecognized argument(s) '"
-                 << boost::join(unrecognized, " ") << "'" << std::endl;
+      err_out << "error: unrecognized argument(s) '"
+              << boost::join(unrecognized, " ") << "'" << std::endl;
       return 1;
     }
   } catch (po::error const& e) {
@@ -663,6 +666,7 @@ int mkdwarfs_main(int argc, sys_char** argv) {
     return 1;
   }
 
+  std::filesystem::path path(path_str);
   std::optional<std::vector<std::filesystem::path>> input_list;
 
   if (vm.count("input-list")) {
@@ -676,7 +680,7 @@ int mkdwarfs_main(int argc, sys_char** argv) {
     options.with_specials = true;
 
     if (!vm.count("input")) {
-      path = std::filesystem::current_path().string();
+      path = std::filesystem::current_path();
     }
 
     std::unique_ptr<std::ifstream> ifs;
@@ -1046,6 +1050,8 @@ int mkdwarfs_main(int argc, sys_char** argv) {
              << " blocks with " << num_workers << " threads";
   }
 
+  std::filesystem::path output(output_str);
+
   std::unique_ptr<std::ostream> os;
 
   if (!options.debug_filter_function) {
@@ -1059,8 +1065,8 @@ int mkdwarfs_main(int argc, sys_char** argv) {
                                                            std::ios::trunc);
 
     if (ofs->bad() || !ofs->is_open()) {
-      std::cerr << "error: cannot open output file '" << output
-                << "': " << strerror(errno) << std::endl;
+      err_out << "error: cannot open output file '" << output
+              << "': " << strerror(errno) << std::endl;
       return 1;
     }