From fe6aa3aa87bdff77ca667e012a9d1cc34f1fb8ea Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 24 Aug 2018 13:33:01 +0200
Subject: Implement bdep-ci command

---
 bdep/project.cxx | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)

(limited to 'bdep/project.cxx')

diff --git a/bdep/project.cxx b/bdep/project.cxx
index cd4f029..8178b01 100644
--- a/bdep/project.cxx
+++ b/bdep/project.cxx
@@ -381,4 +381,71 @@ namespace bdep
       }
     }
   }
+
+  standard_version
+  package_version (const common_options& o,
+                   const dir_path& cfg,
+                   const package_name& p)
+  {
+    // We could have used bpkg-pkg-status but then we would have to deal with
+    // iterations. So we use the build system's info meta-operation directly.
+    //
+    string v;
+    {
+      process pr;
+      bool io (false);
+      try
+      {
+        fdpipe pipe (fdopen_pipe ()); // Text mode seems appropriate.
+
+        // Note: the package directory inside the configuration is a bit of an
+        // assumption.
+        //
+        pr = start_b (
+          o,
+          pipe /* stdout */,
+          2    /* stderr */,
+          "info:", (dir_path (cfg) /= p.string ()).representation ());
+
+        pipe.out.close ();
+        ifdstream is (move (pipe.in), fdstream_mode::skip, ifdstream::badbit);
+
+        for (string l; !eof (getline (is, l)); )
+        {
+          // Verify the name for good measure (comes before version).
+          //
+          if (l.compare (0, 9, "project: ") == 0)
+          {
+            if (l.compare (9, string::npos, p.string ()) != 0)
+              fail << "name mismatch for package " << p;
+          }
+          else if (l.compare (0, 9, "version: ") == 0)
+          {
+            v = string (l, 9);
+            break;
+          }
+        }
+
+        is.close (); // Detect errors.
+      }
+      catch (const io_error&)
+      {
+        // Presumably the child process failed and issued diagnostics so let
+        // finish_b() try to deal with that first.
+        //
+        io = true;
+      }
+
+      finish_b (o, pr, io);
+    }
+
+    try
+    {
+      return standard_version (v);
+    }
+    catch (const invalid_argument& e)
+    {
+      fail << "invalid package " << p << " version " << v << ": " << e << endf;
+    }
+  }
 }
-- 
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