From 0e56fe29a9afeee00e02e722496678df89d37d50 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 17 Nov 2009 13:59:39 +0200
Subject: Complete the implementation of the option documentation

Add the man page generator. Port CLI usage, HTML documentation and the man
page to the auto-generated version. Update examples and documentation.
---
 cli/man.cxx | 163 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 163 insertions(+)
 create mode 100644 cli/man.cxx

(limited to 'cli/man.cxx')

diff --git a/cli/man.cxx b/cli/man.cxx
new file mode 100644
index 0000000..cb7822c
--- /dev/null
+++ b/cli/man.cxx
@@ -0,0 +1,163 @@
+// file      : cli/man.cxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009 Code Synthesis Tools CC
+// license   : MIT; see accompanying LICENSE file
+
+#include "man.hxx"
+
+namespace
+{
+  struct option: traversal::option, context
+  {
+    option (context& c) : context (c) {}
+
+    virtual void
+    traverse (type& o)
+    {
+      using semantics::names;
+
+      names& n (o.named ());
+
+      os << ".IP \"\\fB";
+
+      for (names::name_iterator i (n.name_begin ()); i != n.name_end (); ++i)
+      {
+        if (i != n.name_begin ())
+          os << "\\fP|\\fB";
+
+        os << *i;
+      }
+
+      os << "\\fP";
+
+      type::doc_list const& doc (o.doc ());
+      string type (o.type ().name ());
+
+      std::set<string> arg_set;
+
+      if (type != "bool")
+      {
+        string s (
+          translate_arg (
+            doc.size () > 0 ? doc[0] : string ("<arg>"), arg_set));
+
+        os << ' ' << format (s, ot_man);
+      }
+
+      os << "\"" << endl;
+
+      string d;
+
+      // If we have both the long and the short descriptions, use
+      // the long one.
+      //
+      if (type == "bool")
+      {
+        if (doc.size () > 1)
+          d = doc[1];
+        else if (doc.size () > 0)
+          d = doc[0];
+      }
+      else
+      {
+        if (doc.size () > 2)
+          d = doc[2];
+        else if (doc.size () > 1)
+          d = doc[1];
+      }
+
+      // Format the documentation string.
+      //
+      d = format (translate (d, arg_set), ot_man);
+
+      if (!d.empty ())
+      {
+        size_t b (0), e (0), i (0);
+
+        for (size_t n (d.size ()); i < n; ++i)
+        {
+          if (d[i] == ' ' || d[i] == '\n')
+            e = i;
+
+          if (d[i] == '\n' || (i - b >= 76 && e != b))
+          {
+            if (b != 0)
+              os << endl;
+
+            os << string (d, b, e - b);
+
+            if (d[i] == '\n')
+              os << endl;
+
+            b = e = e + 1;
+          }
+        }
+
+        // Flush the last line.
+        //
+        if (b != i)
+        {
+          if (b != 0)
+            os << endl;
+
+          os << string (d, b, i - b);
+        }
+      }
+
+      os << endl
+         << endl;
+    }
+  };
+
+  //
+  //
+  struct class_: traversal::class_, context
+  {
+    class_ (context& c)
+        : context (c), option_ (c)
+    {
+      names_option_ >> option_;
+    }
+
+    virtual void
+    traverse (type& c)
+    {
+      string const& n (options.class_ ());
+
+      if (!n.empty ())
+      {
+        string fqn (fq_name (c, false));
+        fqn = string (fqn, 2, fqn.size () - 2); // Get rid of leading ::.
+
+        if (n != fqn)
+          return;
+      }
+
+      names (c, names_option_);
+    }
+
+  private:
+    bool generated_;
+    option option_;
+    traversal::names names_option_;
+  };
+}
+
+void
+generate_man (context& ctx)
+{
+  traversal::cli_unit unit;
+  traversal::names unit_names;
+  traversal::namespace_ ns;
+  class_ cl (ctx);
+
+  unit >> unit_names >> ns;
+  unit_names >> cl;
+
+  traversal::names ns_names;
+
+  ns >> ns_names >> ns;
+  ns_names >> cl;
+
+  unit.dispatch (ctx.unit);
+}
-- 
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