From 86576cdd3c8d959ffe93f49b7744a99164f172ee Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 8 Jul 2016 16:13:58 +0200
Subject: Move filesystem-related functions from context to new filesystem
 files

---
 build2/filesystem.txx | 108 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 build2/filesystem.txx

(limited to 'build2/filesystem.txx')

diff --git a/build2/filesystem.txx b/build2/filesystem.txx
new file mode 100644
index 0000000..a3366ba
--- /dev/null
+++ b/build2/filesystem.txx
@@ -0,0 +1,108 @@
+// file      : build2/filesystem.txx -*- C++ -*-
+// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <build2/context>     // work
+#include <build2/diagnostics>
+
+namespace build2
+{
+  template <typename T>
+  fs_status<butl::rmfile_status>
+  rmfile (const path& f, const T& t, uint16_t v)
+  {
+    using namespace butl;
+
+    // We don't want to print the command if we couldn't remove the file
+    // because it does not exist (just like we don't print the update command
+    // if the file is up to date). This makes the below code a bit ugly.
+    //
+    auto print = [&f, &t, v] ()
+    {
+      if (verb >= v)
+      {
+        if (verb >= 2)
+          text << "rm " << f;
+        else if (verb)
+          text << "rm " << t;
+      }
+    };
+
+    rmfile_status rs;
+
+    try
+    {
+      rs = try_rmfile (f);
+    }
+    catch (const system_error& e)
+    {
+      print ();
+      error << "unable to remove file " << f << ": " << e.what ();
+      throw failed ();
+    }
+
+    if (rs == rmfile_status::success)
+      print ();
+
+    return rs;
+  }
+
+  template <typename T>
+  fs_status<butl::rmdir_status>
+  rmdir (const dir_path& d, const T& t, uint16_t v)
+  {
+    using namespace butl;
+
+    bool w (work.sub (d)); // Don't try to remove working directory.
+    rmdir_status rs;
+
+    // We don't want to print the command if we couldn't remove the directory
+    // because it does not exist (just like we don't print mkdir if it already
+    // exists) or if it is not empty. This makes the below code a bit ugly.
+    //
+    auto print = [&d, &t, v] ()
+    {
+      if (verb >= v)
+      {
+        if (verb >= 2)
+          text << "rm " << d;
+        else if (verb)
+          text << "rm " << t;
+      }
+    };
+
+    try
+    {
+      rs = !w ? try_rmdir (d) : rmdir_status::not_empty;
+    }
+    catch (const system_error& e)
+    {
+      print ();
+      error << "unable to remove directory " << d << ": " << e.what ();
+      throw failed ();
+    }
+
+    switch (rs)
+    {
+    case rmdir_status::success:
+      {
+        print ();
+        break;
+      }
+    case rmdir_status::not_empty:
+      {
+        if (verb >= v && verb >= 2)
+        {
+          text << d << " is "
+               << (w ? "current working directory" : "not empty")
+               << ", not removing";
+        }
+        break;
+      }
+    case rmdir_status::not_exist:
+      break;
+    }
+
+    return rs;
+  }
+}
-- 
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