From 9fb791e9fad6c63fc1dac49f4d05ae63b8a3db9b Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 5 Jan 2016 11:55:15 +0200
Subject: Rename build directory/namespace to build2

---
 build2/context.txx | 141 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 build2/context.txx

(limited to 'build2/context.txx')

diff --git a/build2/context.txx b/build2/context.txx
new file mode 100644
index 0000000..cc37a97
--- /dev/null
+++ b/build2/context.txx
@@ -0,0 +1,141 @@
+// file      : build2/context.txx -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <system_error>
+
+#include <build2/diagnostics>
+
+namespace build2
+{
+  template <typename T>
+  fs_status<butl::rmfile_status>
+  rmfile (const path& f, const T& t)
+  {
+    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.
+    //
+    rmfile_status rs;
+
+    try
+    {
+      rs = try_rmfile (f);
+    }
+    catch (const std::system_error& e)
+    {
+      if (verb >= 2)
+        text << "rm " << f;
+      else if (verb)
+        text << "rm " << t;
+
+      fail << "unable to remove file " << f << ": " << e.what ();
+    }
+
+    if (rs == rmfile_status::success)
+    {
+      if (verb >= 2)
+        text << "rm " << f;
+      else if (verb)
+        text << "rm " << t;
+    }
+
+    return rs;
+  }
+
+  template <typename T>
+  fs_status<butl::rmdir_status>
+  rmdir (const dir_path& d, const T& t)
+  {
+    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.
+    //
+    try
+    {
+      rs = !w ? try_rmdir (d) : rmdir_status::not_empty;
+    }
+    catch (const std::system_error& e)
+    {
+      if (verb >= 2)
+        text << "rmdir " << d;
+      else if (verb)
+        text << "rmdir " << t;
+
+      fail << "unable to remove directory " << d << ": " << e.what ();
+    }
+
+    switch (rs)
+    {
+    case rmdir_status::success:
+      {
+        if (verb >= 2)
+          text << "rmdir " << d;
+        else if (verb)
+          text << "rmdir " << t;
+
+        break;
+      }
+    case rmdir_status::not_empty:
+      {
+        if (verb >= 2)
+          text << "directory " << d << " is "
+               << (w ? "current working directory" : "not empty")
+               << ", not removing";
+
+        break;
+      }
+    case rmdir_status::not_exist:
+      break;
+    }
+
+    return rs;
+  }
+
+  template <typename K>
+  basic_path<char, K>
+  relative (const basic_path<char, K>& p)
+  {
+    typedef basic_path<char, K> path;
+
+    const dir_path& b (*relative_base);
+
+    if (b.empty ())
+      return p;
+
+    if (p.sub (b))
+      return p.leaf (b);
+
+    // If base is a sub-path of {src,out}_root and this path is also a
+    // sub-path of it, then use '..' to form a relative path.
+    //
+    // Don't think this is a good heuristic. For example, why shouldn't
+    // we display paths from imported projects as relative if they are
+    // more readable than absolute?
+    //
+    /*
+    if ((work.sub (src_root) && p.sub (src_root)) ||
+        (work.sub (out_root) && p.sub (out_root)))
+      return p.relative (work);
+    */
+
+    if (p.root_directory () == b.root_directory ())
+    {
+      path r (p.relative (b));
+
+      if (r.string ().size () < p.string ().size ())
+        return r;
+    }
+
+    return p;
+  }
+}
-- 
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