Implement manifests

1 files changed, 260 insertions, 0 deletions

diff --git a/bbot/bootstrap-manifest.cxx b/bbot/bootstrap-manifest.cxx
new file mode 100644
index 0000000..7d635ca
--- /dev/null
+++ b/bbot/bootstrap-manifest.cxx
@@ -0,0 +1,260 @@
+// file      : bbot/bootstrap-manifest.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <bbot/bootstrap-manifest>
+
+#include <butl/manifest-parser>
+#include <butl/manifest-serializer>
+
+using namespace butl;
+
+namespace bbot
+{
+  using parser = manifest_parser;
+  using parsing = manifest_parsing;
+  using serializer = manifest_serializer;
+  using serialization = manifest_serialization;
+  using name_value = manifest_name_value;
+
+  // toolchain_manifest
+  //
+  toolchain_manifest::
+  toolchain_manifest (parser& p, bool iu)
+      : toolchain_manifest (p, p.next (), iu)
+  {
+    // Make sure this is the end.
+    //
+    name_value nv (p.next ());
+    if (!nv.empty ())
+      throw parsing (p.name (), nv.name_line, nv.name_column,
+                     "single toolchain manifest expected");
+  }
+
+  toolchain_manifest::
+  toolchain_manifest (parser& p, name_value nv, bool iu)
+  {
+    auto bad_name = [&p, &nv] (const string& d)
+    {
+      throw parsing (p.name (), nv.name_line, nv.name_column, d);
+    };
+
+    auto bad_value = [&p, &nv] (const string& d)
+    {
+      throw parsing (p.name (), nv.value_line, nv.value_column, d);
+    };
+
+    // Make sure this is the start and we support the version.
+    //
+    if (!nv.name.empty ())
+      bad_name ("start of toolchain manifest expected");
+
+    if (nv.value != "1")
+      bad_value ("unsupported format version");
+
+    // Parse the toolchain manifest.
+    //
+    for (nv = p.next (); !nv.empty (); nv = p.next ())
+    {
+      string& n (nv.name);
+      string& v (nv.value);
+
+      if (n == "id")
+      {
+        if (!id.empty ())
+          bad_name ("toolchain id redefinition");
+
+        if (v.empty ())
+          bad_value ("empty toolchain id");
+
+        id = move (v);
+      }
+      else if (!iu)
+        bad_name ("unknown name '" + n + "' in toolchain manifest");
+    }
+
+    // Verify all non-optional values were specified.
+    //
+    if (id.empty ())
+      bad_value ("no toolchain id specified");
+  }
+
+  void toolchain_manifest::
+  serialize (serializer& s) const
+  {
+    // @@ Should we check that all non-optional values are specified?
+    //
+    s.next ("", "1"); // Start of manifest.
+    s.next ("id", id);
+    s.next ("", ""); // End of manifest.
+  }
+
+  // bootstrap_manifest
+  //
+  bootstrap_manifest::
+  bootstrap_manifest (parser& p, bool iu)
+      : bootstrap_manifest (p, p.next (), iu)
+  {
+    // Make sure this is the end.
+    //
+    name_value nv (p.next ());
+    if (!nv.empty ())
+      throw parsing (p.name (), nv.name_line, nv.name_column,
+                     "single bootstrap manifest expected");
+  }
+
+  bootstrap_manifest::
+  bootstrap_manifest (parser& p, name_value nv, bool iu)
+  {
+    auto bad_name = [&p, &nv] (const string& d)
+    {
+      throw parsing (p.name (), nv.name_line, nv.name_column, d);
+    };
+
+    auto bad_value = [&p, &nv] (const string& d)
+    {
+      throw parsing (p.name (), nv.value_line, nv.value_column, d);
+    };
+
+    // Make sure this is the start and we support the version.
+    //
+    if (!nv.name.empty ())
+      bad_name ("start of bootstrap manifest expected");
+
+    if (nv.value != "1")
+      bad_value ("unsupported format version");
+
+    // Parse the bootstrap manifest.
+    //
+    for (nv = p.next (); !nv.empty (); nv = p.next ())
+    {
+      string& n (nv.name);
+      string& v (nv.value);
+
+      size_t nn (n.size ()); // Name length.
+
+      // Note: returns false if nothing preceeds a suffix.
+      //
+      auto suffix = [&n, nn] (const char* s, size_t sn) -> bool
+      {
+        return nn > sn && n.compare (nn - sn, sn, s) == 0;
+      };
+
+      size_t sn;
+      if (suffix ("-version", sn = 8))
+      {
+        string pn (n, 0, nn - sn); // Package name.
+
+        // Package version.
+        //
+        size_t vn;
+        uint64_t pv (stoull (v, &vn));
+        if (vn != v.size ())
+          bad_value ("invalid package version");
+
+        // Make sure the package version is not redefined.
+        //
+        if (!versions.emplace (move (pn), pv).second)
+          bad_name (n + " redefinition");
+      }
+      else if (!iu)
+        bad_name ("unknown name '" + n + "' in bootstrap manifest");
+    }
+
+    // Verify all non-optional values were specified.
+    //
+    if (versions.empty ())
+      bad_value ("no package versions specified");
+  }
+
+  void bootstrap_manifest::
+  serialize (serializer& s) const
+  {
+    // @@ Should we check that all non-optional values are specified?
+    //
+    s.next ("", "1"); // Start of manifest.
+
+    // Serialize *-version values.
+    //
+    for (const auto& v: versions)
+      s.next (v.first + "-version", to_string (v.second));
+
+    s.next ("", ""); // End of manifest.
+  }
+
+  // bootstrapped_machine_manifest
+  //
+  bootstrapped_machine_manifest::
+  bootstrapped_machine_manifest (parser& p, bool iu)
+  {
+    name_value nv (p.next ());
+
+    auto bad_name = [&p, &nv] (const string& d)
+    {
+      throw parsing (p.name (), nv.name_line, nv.name_column, d);
+    };
+
+    auto bad_value = [&p, &nv] (const string& d)
+    {
+      throw parsing (p.name (), nv.value_line, nv.value_column, d);
+    };
+
+    // Make sure this is the start and we support the version.
+    //
+    if (!nv.name.empty ())
+      bad_name ("start of bootstrapped machine manifest expected");
+
+    if (nv.value != "1")
+      bad_value ("unsupported format version");
+
+    // Parse the bootstrapped machine manifest. Currently there is no values
+    // expected.
+    //
+    for (nv = p.next (); !nv.empty (); nv = p.next ())
+    {
+      if (!iu)
+        bad_name ("unknown name '" + nv.name +
+                  "' in bootstrapped machine manifest");
+    }
+
+    nv = p.next ();
+    if (nv.empty ())
+      bad_value ("machine manifest expected");
+
+    machine = machine_manifest (p, nv, false, iu);
+
+    nv = p.next ();
+    if (nv.empty ())
+      bad_value ("toolchain manifest expected");
+
+    toolchain = toolchain_manifest (p, nv, iu);
+
+    nv = p.next ();
+    if (nv.empty ())
+      bad_value ("bootstrap manifest expected");
+
+    bootstrap = bootstrap_manifest (p, nv, iu);
+
+    // Make sure this is the end.
+    //
+    nv = p.next ();
+    if (!nv.empty ())
+      throw parsing (p.name (), nv.name_line, nv.name_column,
+                     "single bootstrapped machine manifest expected");
+  }
+
+  void bootstrapped_machine_manifest::
+  serialize (serializer& s) const
+  {
+    // @@ Should we check that all non-optional values are specified?
+    //
+    s.next ("", "1"); // Start of manifest.
+    s.next ("", "");  // End of manifest.
+
+    machine.serialize (s);
+    toolchain.serialize (s);
+    bootstrap.serialize (s);
+
+    s.next ("", ""); // End of stream.
+  }
+}