LinuxOsRelease

CMakeLists.txt

@@ -76,6 +76,10 @@ if(WIN32 AND NOT UNIX)
   set(MIKTEX_NATIVE_WINDOWS TRUE)
 else()
   set(MIKTEX_UNIX_ALIKE TRUE)
+  if(NOT APPLE)
+    set(MIKTEX_LINUX TRUE)
+endif()
+
 endif()
 
 if(CMAKE_SYSTEM_NAME MATCHES "BSD/OS")

Libraries/MiKTeX/Core/CMakeLists.txt

@@ -216,6 +216,14 @@ if(MIKTEX_NATIVE_WINDOWS)
   list(APPEND public_headers ${public_headers_win})
 endif()
 
+if(MIKTEX_LINUX)
+  set(public_headers_tux
+    ${CMAKE_CURRENT_SOURCE_DIR}/include/miktex/Core/tux/LinuxOsRelease
+    ${CMAKE_CURRENT_SOURCE_DIR}/include/miktex/Core/tux/LinuxOsRelease.h
+  )
+  list(APPEND public_headers ${public_headers_tux})
+endif()
+
 set(cfg_sources
   ${CMAKE_CURRENT_SOURCE_DIR}/Cfg/Cfg.cpp
 )
@@ -334,6 +342,11 @@ else()
   list(APPEND misc_sources
     ${CMAKE_CURRENT_SOURCE_DIR}/unx/unx.cpp
   )
+  if(MIKTEX_LINUX)
+    list(APPEND misc_sources
+      ${CMAKE_CURRENT_SOURCE_DIR}/tux/LinuxOsRelease.cpp
+    )
+  endif()
 endif()
 
 set(pathname_sources
@@ -573,6 +586,14 @@ if(INSTALL_MIKTEX_HEADERS)
         ${MIKTEX_HEADER_DESTINATION_DIR}/miktex/Core/win
     )
   endif()
+  if(MIKTEX_LINUX)
+    install(
+      FILES
+        ${public_headers_tux}
+      DESTINATION
+        ${MIKTEX_HEADER_DESTINATION_DIR}/miktex/Core/tux
+    )
+  endif()
 endif()
 
 if(NOT LINK_EVERYTHING_STATICALLY)

Libraries/MiKTeX/Core/include/miktex/Core/tux/LinuxOsRelease

@@ -0,0 +1,24 @@
+/* miktex/Core/LinuxOsVersion:                          -*- C++ -*-
+
+   Copyright (C) 2018 Christian Schenk
+
+   This file is part of the MiKTeX Core Library.
+
+   The MiKTeX Core Library 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 2, or
+   (at your option) any later version.
+
+   The MiKTeX Core Library 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 the MiKTeX Core Library; if not, write to the Free
+   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA. */
+
+#pragma once
+
+#include "LinuxOsRelease.h"

Libraries/MiKTeX/Core/include/miktex/Core/tux/LinuxOsRelease.h

@@ -0,0 +1,47 @@
+/* LinuxOsRelease.h:                                    -*- C++ -*-
+
+   Copyright (C) 2018 Christian Schenk
+
+   This file is part of the MiKTeX Core Library.
+
+   The MiKTeX Core Library 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 2, or
+   (at your option) any later version.
+   
+   The MiKTeX Core Library 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 the MiKTeX Core Library; if not, write to the Free
+   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA. */
+
+#pragma once
+
+#include <miktex/Core/config.h>
+
+#include <string>
+
+class LinuxOsRelease
+{
+public:
+  std::string id;
+
+public:
+  std::string name;
+
+public:
+  std::string pretty_name;
+
+ public:
+  std::string version_id;
+
+public:
+  std::string version;
+
+public:
+  static MIKTEXCORECEEAPI(LinuxOsRelease) Get();
+};

Libraries/MiKTeX/Core/tux/LinuxOsRelease.cpp

@@ -0,0 +1,92 @@
+/* LinuxOsRelease.cpp: 
+
+   Copyright (C) 2018 Christian Schenk
+
+   This file is part of the MiKTeX Core Library.
+
+   The MiKTeX Core Library 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 2, or
+   (at your option) any later version.
+
+   The MiKTeX Core Library 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 the MiKTeX Core Library; if not, write to the Free
+   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA. */
+
+#include "StdAfx.h"
+
+#include "internal.h"
+
+#include "miktex/Core/Cfg.h"
+#include "miktex/Core/tux/LinuxOsRelease.h"
+
+using namespace MiKTeX::Core;
+using namespace std;
+
+
+string Unquote(const string& s)
+{
+  size_t len = s.length();
+  if (len < 2 || s[0] != '"' || s[len - 1] != '"')
+  {
+    return s;
+  }
+  return s.substr(1, len - 1);
+}
+
+LinuxOsRelease ReadOsRelease()
+{
+  LinuxOsRelease result;
+  unique_ptr<Cfg> cfg = Cfg::Create();
+  cfg->Read("/etc/os-release");
+  for (const shared_ptr<Cfg::Key>& key : cfg->GetKeys())
+  {
+    for (const shared_ptr<Cfg::Value>& val : key->GetValues())
+    {
+      if (val->GetName() == "ID")
+      {
+        result.id = Unquote(val->GetValue());
+      }
+      else if (val->GetName() == "PRETTY_NAME")
+      {
+        result.pretty_name = Unquote(val->GetValue());
+      }
+      else if (val->GetName() == "VERSION_ID")
+      {
+        result.version_id = Unquote(val->GetValue());
+      }
+      else if (val->GetName() == "VERSION")
+      {
+        result.version = Unquote(val->GetValue());
+      }
+    }
+  }
+  return result;
+}
+
+class LazyLinuxOsRelease
+{
+private:
+  LinuxOsRelease linuxOsRelease;
+public:
+  operator LinuxOsRelease()
+  {
+    if (linuxOsRelease.id.empty())
+    {
+      linuxOsRelease = ReadOsRelease();
+    }
+  }
+};
+
+LazyLinuxOsRelease linuxOsRelease;
+
+LinuxOsRelease LinuxOsRelease::Get()
+{
+  return linuxOsRelease;
+}