From c09cd7512491cee1e82c1ad8128ce9fd4bc3f79b Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 22 Sep 2017 23:32:28 +0200
Subject: Initial modularization with both Clang and VC hacks

Note: gave up on VC about half way though.
---
 libbutl/pager.cxx | 51 +++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 43 insertions(+), 8 deletions(-)

(limited to 'libbutl/pager.cxx')

diff --git a/libbutl/pager.cxx b/libbutl/pager.cxx
index 3910443..6453120 100644
--- a/libbutl/pager.cxx
+++ b/libbutl/pager.cxx
@@ -2,24 +2,59 @@
 // copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
 // license   : MIT; see accompanying LICENSE file
 
-#include <libbutl/pager.hxx>
+#ifndef __cpp_modules
+#include <libbutl/pager.mxx>
+#endif
+
+#include <errno.h> // E*
 
 #ifndef _WIN32
 #  include <unistd.h>    // STDOUT_FILENO
 #  include <sys/ioctl.h> // ioctl()
+#else
+#  include <libbutl/win32-utility.hxx>
+#endif
 
+#ifndef __cpp_lib_modules
+#include <string>
+#include <vector>
+#include <iostream>
+
+#include <cstring> // strchr()
+#include <utility> // move()
+#ifndef _WIN32
 #  include <chrono>
 #  include <thread> // this_thread::sleep_for()
-#else
-#  include <libbutl/win32-utility.hxx>
+#endif
 #endif
 
-#include <cstring>      // strchr()
-#include <utility>      // move()
+// Other includes.
 
-#include <libbutl/utility.hxx>  // operator<<(ostream, exception),
-                                // throw_generic_error()
-#include <libbutl/fdstream.hxx> // fdclose()
+#ifdef __cpp_modules
+module butl.pager;
+
+// Only imports additional to interface.
+#ifdef __clang__
+#ifdef __cpp_lib_modules
+import std.core;
+import std.io;
+#endif
+import butl.process;
+import butl.fdstream;
+#endif
+
+#ifndef _WIN32
+import std.core; //@@ MOD TODO: import std.threading.
+#endif
+
+import butl.utility;  // operator<<(ostream, exception), throw_generic_error()
+import butl.optional;
+import butl.fdstream; // fdclose()
+#else
+#include <libbutl/utility.mxx>
+#include <libbutl/optional.mxx>
+#include <libbutl/fdstream.mxx>
+#endif
 
 using namespace std;
 
-- 
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