Move filesystem-related functions from context to new filesystem files

1 files changed, 89 insertions, 0 deletions

diff --git a/build2/filesystem b/build2/filesystem
new file mode 100644
index 0000000..1dcf8bd
--- /dev/null
+++ b/build2/filesystem
@@ -0,0 +1,89 @@
+// file      : build2/filesystem -*- C++ -*-
+// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#ifndef BUILD2_FILESYSTEM
+#define BUILD2_FILESYSTEM
+
+#include <butl/filesystem>
+
+#include <build2/types>
+#include <build2/utility>
+
+// Higher-level filesystem utilities built on top of <butl/filesystem>.
+//
+namespace build2
+{
+  // The dual interface wrapper for the {mk,rm}{file,dir}() functions
+  // below that allows you to use it as a true/false return or a more
+  // detailed enum from <butl/filesystem>
+  //
+  template <typename T>
+  struct fs_status
+  {
+    T v;
+    fs_status (T v): v (v) {};
+    operator T () const {return v;}
+    explicit operator bool () const {return v == T::success;}
+  };
+
+  // Create the directory and print the standard diagnostics starting from
+  // the specified verbosity level.
+  //
+  // Note that this implementation is not suitable if it is expected that the
+  // directory will exist in the majority of cases and performance is
+  // important. See the fsdir{} rule for details.
+  //
+  using mkdir_status = butl::mkdir_status;
+
+  fs_status<mkdir_status>
+  mkdir (const dir_path&, uint16_t verbosity = 1);
+
+  fs_status<mkdir_status>
+  mkdir_p (const dir_path&, uint16_t verbosity = 1);
+
+  // Remove the file and print the standard diagnostics starting from the
+  // specified verbosity level. The second argument is only used in
+  // diagnostics, to print the target name. Passing the path for target will
+  // result in the relative path being printed.
+  //
+  using rmfile_status = butl::rmfile_status;
+
+  template <typename T>
+  fs_status<rmfile_status>
+  rmfile (const path&, const T& target, uint16_t verbosity = 1);
+
+  inline fs_status<rmfile_status>
+  rmfile (const path& f, int verbosity = 1) // Literal overload (int).
+  {
+    return rmfile (f, f, static_cast<uint16_t> (verbosity));
+  }
+
+  // Similar to rmfile() but for directories (note: not -r).
+  //
+  using rmdir_status = butl::rmdir_status;
+
+  template <typename T>
+  fs_status<rmdir_status>
+  rmdir (const dir_path&, const T& target, uint16_t verbosity = 1);
+
+  inline fs_status<rmdir_status>
+  rmdir (const dir_path& d, int verbosity = 1) // Literal overload (int).
+  {
+    return rmdir (d, d, static_cast<uint16_t> (verbosity));
+  }
+
+  // Remove the directory recursively and print the standard diagnostics
+  // starting from the specified verbosity level. Note that this function
+  // returns not_empty if we try to remove a working directory. If the dir
+  // argument is false, then the directory itself is not removed.
+  //
+  // @@ Collides (via ADL) with butl::rmdir_r(), which sucks.
+  //
+  fs_status<rmdir_status>
+  rmdir_r (const dir_path&, bool dir = true, uint16_t verbosity = 1);
+}
+
+#include <build2/filesystem.txx>
+
+#endif // BUILD2_FILESYSTEM