Move config, dist, test, and install modules into library

1 files changed, 309 insertions, 0 deletions

diff --git a/libbuild2/install/init.cxx b/libbuild2/install/init.cxx
new file mode 100644
index 0000000..fb3d9ea
--- /dev/null
+++ b/libbuild2/install/init.cxx
@@ -0,0 +1,309 @@
+// file      : libbuild2/install/init.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <libbuild2/install/init.hxx>
+
+#include <libbuild2/scope.hxx>
+#include <libbuild2/target.hxx>
+#include <libbuild2/rule.hxx>
+#include <libbuild2/function.hxx>
+#include <libbuild2/operation.hxx>
+#include <libbuild2/diagnostics.hxx>
+
+#include <libbuild2/config/utility.hxx>
+
+#include <libbuild2/install/rule.hxx>
+#include <libbuild2/install/utility.hxx>
+#include <libbuild2/install/operation.hxx>
+
+using namespace std;
+using namespace butl;
+
+namespace build2
+{
+  namespace install
+  {
+    // Set install.<name>.* values based on config.install.<name>.* ones
+    // or the defaults. If none of config.install.* values were specified,
+    // then we do omitted/delayed configuration. Note that we still need
+    // to set all the install.* values to defaults, as if we had the
+    // default configuration.
+    //
+    // If override is true, then override values that came from outer
+    // configurations. We have to do this for paths that contain the
+    // package name.
+    //
+    // For global values we only set config.install.* variables. Non-global
+    // values with NULL defaults are omitted.
+    //
+    template <typename T, typename CT>
+    static void
+    set_var (bool spec,
+             scope& r,
+             const char* name,
+             const char* var,
+             const CT* dv,
+             bool override = false)
+    {
+      string vn;
+      lookup l;
+
+      bool global (*name == '\0');
+
+      if (spec)
+      {
+        // Note: overridable.
+        //
+        vn = "config.install";
+        if (!global)
+        {
+          vn += '.';
+          vn += name;
+        }
+        vn += var;
+        const variable& vr (var_pool.rw (r).insert<CT> (move (vn), true));
+
+        l = dv != nullptr
+          ? config::required (r, vr, *dv, override).first
+          : (global
+             ? config::optional (r, vr)
+             : config::omitted (r, vr).first);
+      }
+
+      if (global)
+        return;
+
+      // Note: not overridable.
+      //
+      vn = "install.";
+      vn += name;
+      vn += var;
+      const variable& vr (var_pool.rw (r).insert<T> (move (vn)));
+
+      value& v (r.assign (vr));
+
+      if (spec)
+      {
+        if (l)
+          v = cast<T> (l); // Strip CT to T.
+      }
+      else
+      {
+        if (dv != nullptr)
+          v = *dv;
+      }
+    }
+
+    template <typename T>
+    static void
+    set_dir (bool s,                                  // specified
+             scope& r,                                // root scope
+             const char* n,                           // var name
+             const T& p,                              // path
+             bool o = false,                          // override
+             const string& fm = string (),            // file mode
+             const string& dm = string (),            // dir mode
+             const build2::path& c = build2::path ()) // command
+    {
+      using build2::path;
+
+      bool global (*n == '\0');
+
+      if (!global)
+        set_var<dir_path> (s, r, n, "",        p.empty ()  ? nullptr : &p, o);
+
+      set_var<path>     (s, r, n, ".cmd",      c.empty ()  ? nullptr : &c);
+      set_var<strings>  (s, r, n, ".options",  (strings*) (nullptr));
+      set_var<string>   (s, r, n, ".mode",     fm.empty () ? nullptr : &fm);
+      set_var<string>   (s, r, n, ".dir_mode", dm.empty () ? nullptr : &dm);
+      set_var<string>   (s, r, n, ".sudo",     (string*) (nullptr));
+
+      // This one doesn't have config.* value (only set in a buildfile).
+      //
+      if (!global)
+        var_pool.rw (r).insert<bool> (string ("install.") + n + ".subdirs");
+    }
+
+    void
+    functions (); // functions.cxx
+
+    bool
+    boot (scope& rs, const location&, unique_ptr<module_base>&)
+    {
+      tracer trace ("install::boot");
+      l5 ([&]{trace << "for " << rs;});
+
+      // Register install function family if this is the first instance of the
+      // install modules.
+      //
+      if (!function_family::defined ("install"))
+        functions ();
+
+      // Register our operations.
+      //
+      rs.insert_operation (install_id,            op_install);
+      rs.insert_operation (uninstall_id,          op_uninstall);
+      rs.insert_operation (update_for_install_id, op_update_for_install);
+
+      return false;
+    }
+
+    static const path cmd ("install");
+
+    static const dir_path dir_root ("root");
+
+    static const dir_path dir_sbin      (dir_path ("exec_root") /= "sbin");
+    static const dir_path dir_bin       (dir_path ("exec_root") /= "bin");
+    static const dir_path dir_lib       (dir_path ("exec_root") /= "lib");
+    static const dir_path dir_libexec   (dir_path ("exec_root") /= "libexec");
+    static const dir_path dir_pkgconfig (dir_path ("lib") /= "pkgconfig");
+
+    static const dir_path dir_data    (dir_path ("data_root") /= "share");
+    static const dir_path dir_include (dir_path ("data_root") /= "include");
+
+    static const dir_path dir_doc  (dir_path (dir_data) /= "doc");
+    static const dir_path dir_man  (dir_path (dir_data) /= "man");
+    static const dir_path dir_man1 (dir_path ("man") /= "man1");
+
+    static const group_rule group_rule_ (true /* see_through_only */);
+
+    bool
+    init (scope& rs,
+          scope& bs,
+          const location& l,
+          unique_ptr<module_base>&,
+          bool first,
+          bool,
+          const variable_map& config_hints)
+    {
+      tracer trace ("install::init");
+
+      if (!first)
+      {
+        warn (l) << "multiple install module initializations";
+        return true;
+      }
+
+      const dir_path& out_root (rs.out_path ());
+      l5 ([&]{trace << "for " << out_root;});
+
+      assert (config_hints.empty ()); // We don't known any hints.
+
+      // Enter module variables.
+      //
+      auto& vp (var_pool.rw (rs));
+
+      // Note that the set_dir() calls below enter some more.
+      //
+      {
+        // Note: not overridable.
+        //
+        // The install variable is a path, not dir_path, since it can be used
+        // to both specify the target directory (to install with the same file
+        // name) or target file (to install with a different name). And the
+        // way we distinguish between the two is via the presence/absence of
+        // the trailing directory separator.
+        //
+        vp.insert<path>   ("install",         variable_visibility::target);
+        vp.insert<string> ("install.mode",    variable_visibility::project);
+        vp.insert<bool>   ("install.subdirs", variable_visibility::project);
+      }
+
+      // Register our rules.
+      //
+      {
+        auto& r (bs.rules);
+
+        const auto& ar (alias_rule::instance);
+        const auto& dr (fsdir_rule::instance);
+        const auto& fr (file_rule::instance);
+        const auto& gr (group_rule_);
+
+        r.insert<alias> (perform_install_id,   "install.alias", ar);
+        r.insert<alias> (perform_uninstall_id, "uninstall.alias", ar);
+
+        r.insert<fsdir> (perform_install_id,   "install.fsdir", dr);
+        r.insert<fsdir> (perform_uninstall_id, "install.fsdir", dr);
+
+        r.insert<file> (perform_install_id,   "install.file", fr);
+        r.insert<file> (perform_uninstall_id, "uninstall.file", fr);
+
+        r.insert<target> (perform_install_id,   "install.file", gr);
+        r.insert<target> (perform_uninstall_id, "uninstall.file", gr);
+     }
+
+      // Configuration.
+      //
+      // Note that we don't use any defaults for root -- the location
+      // must be explicitly specified or the installer will complain
+      // if and when we try to install.
+      //
+      {
+        using build2::path;
+
+        bool s (config::specified (rs, "install"));
+
+        // Adjust module priority so that the (numerous) config.install.*
+        // values are saved at the end of config.build.
+        //
+        if (s)
+          config::save_module (rs, "install", INT32_MAX);
+
+        const string& n (project (rs).string ());
+
+        // Global config.install.* values.
+        //
+        set_dir (s, rs, "",          abs_dir_path (), false, "644", "755", cmd);
+
+        set_dir (s, rs, "root",      abs_dir_path ());
+
+        set_dir (s, rs, "data_root", dir_root);
+        set_dir (s, rs, "exec_root", dir_root, false, "755");
+
+        set_dir (s, rs, "sbin",      dir_sbin);
+        set_dir (s, rs, "bin",       dir_bin);
+        set_dir (s, rs, "lib",       dir_lib);
+        set_dir (s, rs, "libexec",   dir_path (dir_libexec) /= n, true);
+        set_dir (s, rs, "pkgconfig", dir_pkgconfig, false, "644");
+
+        set_dir (s, rs, "data",      dir_path (dir_data) /= n, true);
+        set_dir (s, rs, "include",   dir_include);
+
+        set_dir (s, rs, "doc",       dir_path (dir_doc) /= n, true);
+        set_dir (s, rs, "man",       dir_man);
+        set_dir (s, rs, "man1",      dir_man1);
+
+        // Support for chroot'ed install (aka DESTDIR).
+        //
+        {
+          auto& var  (vp.insert<dir_path>     (       "install.chroot"));
+          auto& cvar (vp.insert<abs_dir_path> ("config.install.chroot", true));
+
+          value& v (rs.assign (var));
+
+          if (s)
+          {
+            if (lookup l = config::optional (rs, cvar))
+              v = cast<dir_path> (l); // Strip abs_dir_path.
+          }
+        }
+      }
+
+      // Configure "installability" for built-in target types.
+      //
+      install_path<exe>  (bs, dir_path ("bin"));  // Install into install.bin.
+      install_path<doc>  (bs, dir_path ("doc"));  // Install into install.doc.
+      install_path<man>  (bs, dir_path ("man"));  // Install into install.man.
+      install_path<man1> (bs, dir_path ("man1")); // Install into install.man1.
+
+      return true;
+    }
+
+    module_functions
+    build2_install_load ()
+    {
+      return module_functions {&boot, &init};
+    }
+  }
+}