Implement publish command for publishing packages to archive repositories

1 files changed, 66 insertions, 0 deletions

diff --git a/bdep/git.cxx b/bdep/git.cxx
new file mode 100644
index 0000000..c26d257
--- /dev/null
+++ b/bdep/git.cxx
@@ -0,0 +1,66 @@
+// file      : bdep/git.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2018 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <bdep/git.hxx>
+
+#include <libbutl/filesystem.mxx>
+
+#include <bdep/diagnostics.hxx>
+
+using namespace butl;
+
+namespace bdep
+{
+  bool
+  git (const dir_path& d)
+  {
+    // .git can be either a directory or a file in case of a submodule.
+    //
+    return entry_exists (d / ".git",
+                         true /* follow_symlinks */,
+                         true /* ignore_errors   */);
+  }
+
+  optional<string>
+  git_line (process&& pr, fdpipe&& pipe, bool ie)
+  {
+    optional<string> r;
+
+    bool io (false);
+    try
+    {
+      pipe.out.close ();
+      ifdstream is (move (pipe.in), fdstream_mode::skip, ifdstream::badbit);
+
+      string l;
+      if (!eof (getline (is, l)))
+        r = move (l);
+
+      is.close (); // Detect errors.
+    }
+    catch (const io_error&)
+    {
+      io = true; // Presumably git failed so check that first.
+    }
+
+    // Note: cannot use finish() since ignoring normal error.
+    //
+    if (!pr.wait ())
+    {
+      const process_exit& e (*pr.exit);
+
+      if (!e.normal ())
+        fail << "process git " << e;
+
+      if (ie)
+        r = nullopt;
+      else
+        throw failed (); // Assume git issued diagnostics.
+    }
+    else if (io)
+      fail << "unable to read git output";
+
+    return r;
+  }
+}