/usr/include/Wt/WMessageResources is in libwt-dev 3.3.3+dfsg-4.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 | // This may look like C code, but it's really -*- C++ -*-
/*
 * Copyright (C) 2008 Emweb bvba, Kessel-Lo, Belgium.
 *
 * See the LICENSE file for terms of use.
 */
#ifndef WMESSAGE_RESOURCES_
#define WMESSAGE_RESOURCES_
#include <string>
#include <vector>
#include <map>
#include <set>
#include <Wt/WFlags>
#include <Wt/WMessageResourceBundle>
#include <Wt/WDllDefs.h>
namespace Wt {
class WString;
class WT_API WMessageResources
{
public:
  WMessageResources(const std::string& path, bool loadInMemory = true);
  WMessageResources(const char *builtin);
  void hibernate();
  bool isBuiltin(const char *data) const { return builtin_ == data; }
  const std::string& path() const { return path_; }
  bool resolveKey(const std::string& key, std::string& result);
  bool resolvePluralKey(const std::string& key, 
			std::string& result, 
			::uint64_t amount);
  static int evalPluralCase(const std::string &expression, ::uint64_t n);
 
  void refresh();
  std::set<std::string> keys(WFlags<WMessageResourceBundle::Scope> scope) const;
  typedef std::map<std::string, std::vector<std::string> > KeyValuesMap;
private:
  const bool loadInMemory_;
  bool loaded_;
  const std::string path_;
  const char *builtin_;
  struct Resource {
    KeyValuesMap map_;
    std::string pluralExpression_;
    unsigned pluralCount_;
  };
  Resource local_;
  Resource defaults_;
  bool readResourceFile(const std::string& locale, Resource& resource);
  bool readResourceStream(std::istream &s, Resource& resource,
                          const std::string &fileName);
  std::string findCase(const std::vector<std::string> &cases,
		       std::string pluralExpression,
		       ::uint64_t amount);
};
}
#endif // WMESSAGE_RESOURCES_
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