From 4fcd32b536f3d29755b1fecc7e3f06be64f996ca Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Sat, 24 Feb 2018 18:21:39 +0300
Subject: Add support for rep-list and rep-remove, update rep-add

---
 bpkg/rep-list.cxx | 124 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 bpkg/rep-list.cxx

(limited to 'bpkg/rep-list.cxx')

diff --git a/bpkg/rep-list.cxx b/bpkg/rep-list.cxx
new file mode 100644
index 0000000..f2aca2c
--- /dev/null
+++ b/bpkg/rep-list.cxx
@@ -0,0 +1,124 @@
+// file      : bpkg/rep-list.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <bpkg/rep-list.hxx>
+
+#include <set>
+#include <iostream>  // cout
+
+#include <bpkg/package.hxx>
+#include <bpkg/package-odb.hxx>
+#include <bpkg/database.hxx>
+#include <bpkg/diagnostics.hxx>
+
+using namespace std;
+
+namespace bpkg
+{
+  // Print the repository dependencies, recursively.
+  //
+  // Each line has the following form:
+  //
+  // [(complement|prerequisite) ]<name> <location>
+  //
+  // and is indented with 2 additional spaces for each recursion level.
+  //
+  // Note that we can end up with a repository dependency cycle via
+  // prerequisites. Thus we need to make sure that the repository is not in
+  // the dependency chain yet.
+  //
+  using repositories = set<reference_wrapper<const shared_ptr<repository>>,
+                           compare_reference_target>;
+
+  static void
+  print_dependencies (const rep_list_options& o,
+                      const shared_ptr<repository>& r,
+                      string& indent,
+                      repositories& chain)
+  {
+    assert (!r->name.empty ()); // Can't be the root repository.
+
+    if (!chain.insert (r).second) // Is already in the chain.
+      return;
+
+    indent += "  ";
+
+    if (o.complements ())
+    {
+      for (const lazy_shared_ptr<repository>& rp: r->complements)
+      {
+        // Skip the root complement (see rep_fetch() for details).
+        //
+        if (rp.object_id () == "")
+          continue;
+
+        shared_ptr<repository> r (rp.load ());
+
+        cout << indent << "complement "
+             << r->location.canonical_name () << " " << r->location << endl;
+
+        print_dependencies (o, r, indent, chain);
+      }
+    }
+
+    if (o.prerequisites ())
+    {
+      for (const lazy_weak_ptr<repository>& rp: r->prerequisites)
+      {
+        shared_ptr<repository> r (rp.load ());
+
+        cout << indent << "prerequisite "
+             << r->location.canonical_name () << " " << r->location << endl;
+
+        print_dependencies (o, r, indent, chain);
+      }
+    }
+
+    indent.pop_back ();
+    indent.pop_back ();
+
+    chain.erase (r);
+  }
+
+  static inline void
+  print_dependencies (const rep_list_options& o,
+                      const shared_ptr<repository>& r)
+  {
+    string indent;
+    repositories chain;
+    print_dependencies (o, r, indent, chain);
+  }
+
+  int
+  rep_list (const rep_list_options& o, cli::scanner& args)
+  {
+    tracer trace ("rep_list");
+
+    dir_path c (o.directory ());
+    l4 ([&]{trace << "configuration: " << c;});
+
+    if (args.more ())
+      fail << "unexpected argument '" << args.next () << "'" <<
+        info << "run 'bpkg help rep-list' for more information";
+
+    database db (open (c, trace));
+    transaction t (db.begin ());
+    session s; // Repository dependencies can have cycles.
+
+    shared_ptr<repository> root (db.load<repository> (""));
+
+    for (const lazy_shared_ptr<repository>& rp: root->complements)
+    {
+      shared_ptr<repository> r (rp.load ());
+      cout << r->location.canonical_name () << " " << r->location << endl;
+
+      if (o.complements () || o.prerequisites ())
+        print_dependencies (o, r);
+    }
+
+    t.commit ();
+
+    return 0;
+  }
+}
-- 
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