Add command line option to set verbosity level

-v sets it to 1 (shows actual command lines)
--verbose sets it to any value in the 0-5 range

1 files changed, 290 insertions, 0 deletions

diff --git a/build/options b/build/options
new file mode 100644
index 0000000..053c066
--- /dev/null
+++ b/build/options
@@ -0,0 +1,290 @@
+// -*- C++ -*-
+//
+// This file was generated by CLI, a command line interface
+// compiler for C++.
+//
+
+#ifndef BUILD_OPTIONS
+#define BUILD_OPTIONS
+
+// Begin prologue.
+//
+//
+// End prologue.
+
+#include <iosfwd>
+#include <string>
+#include <cstddef>
+#include <exception>
+
+namespace cli
+{
+  class unknown_mode
+  {
+    public:
+    enum value
+    {
+      skip,
+      stop,
+      fail
+    };
+
+    unknown_mode (value v);
+
+    operator value () const 
+    {
+      return v_;
+    }
+
+    private:
+    value v_;
+  };
+
+  // Exceptions.
+  //
+
+  class exception: public std::exception
+  {
+    public:
+    virtual void
+    print (::std::ostream&) const = 0;
+  };
+
+  ::std::ostream&
+  operator<< (::std::ostream&, const exception&);
+
+  class unknown_option: public exception
+  {
+    public:
+    virtual
+    ~unknown_option () throw ();
+
+    unknown_option (const std::string& option);
+
+    const std::string&
+    option () const;
+
+    virtual void
+    print (::std::ostream&) const;
+
+    virtual const char*
+    what () const throw ();
+
+    private:
+    std::string option_;
+  };
+
+  class unknown_argument: public exception
+  {
+    public:
+    virtual
+    ~unknown_argument () throw ();
+
+    unknown_argument (const std::string& argument);
+
+    const std::string&
+    argument () const;
+
+    virtual void
+    print (::std::ostream&) const;
+
+    virtual const char*
+    what () const throw ();
+
+    private:
+    std::string argument_;
+  };
+
+  class missing_value: public exception
+  {
+    public:
+    virtual
+    ~missing_value () throw ();
+
+    missing_value (const std::string& option);
+
+    const std::string&
+    option () const;
+
+    virtual void
+    print (::std::ostream&) const;
+
+    virtual const char*
+    what () const throw ();
+
+    private:
+    std::string option_;
+  };
+
+  class invalid_value: public exception
+  {
+    public:
+    virtual
+    ~invalid_value () throw ();
+
+    invalid_value (const std::string& option,
+                   const std::string& value);
+
+    const std::string&
+    option () const;
+
+    const std::string&
+    value () const;
+
+    virtual void
+    print (::std::ostream&) const;
+
+    virtual const char*
+    what () const throw ();
+
+    private:
+    std::string option_;
+    std::string value_;
+  };
+
+  class eos_reached: public exception
+  {
+    public:
+    virtual void
+    print (::std::ostream&) const;
+
+    virtual const char*
+    what () const throw ();
+  };
+
+  class scanner
+  {
+    public:
+    virtual
+    ~scanner ();
+
+    virtual bool
+    more () = 0;
+
+    virtual const char*
+    peek () = 0;
+
+    virtual const char*
+    next () = 0;
+
+    virtual void
+    skip () = 0;
+  };
+
+  class argv_scanner: public scanner
+  {
+    public:
+    argv_scanner (int& argc, char** argv, bool erase = false);
+    argv_scanner (int start, int& argc, char** argv, bool erase = false);
+
+    int
+    end () const;
+
+    virtual bool
+    more ();
+
+    virtual const char*
+    peek ();
+
+    virtual const char*
+    next ();
+
+    virtual void
+    skip ();
+
+    private:
+    int i_;
+    int& argc_;
+    char** argv_;
+    bool erase_;
+  };
+
+  template <typename X>
+  struct parser;
+}
+
+#include <cstdint>
+
+class options
+{
+  public:
+  options (int& argc,
+           char** argv,
+           bool erase = false,
+           ::cli::unknown_mode option = ::cli::unknown_mode::fail,
+           ::cli::unknown_mode argument = ::cli::unknown_mode::stop);
+
+  options (int start,
+           int& argc,
+           char** argv,
+           bool erase = false,
+           ::cli::unknown_mode option = ::cli::unknown_mode::fail,
+           ::cli::unknown_mode argument = ::cli::unknown_mode::stop);
+
+  options (int& argc,
+           char** argv,
+           int& end,
+           bool erase = false,
+           ::cli::unknown_mode option = ::cli::unknown_mode::fail,
+           ::cli::unknown_mode argument = ::cli::unknown_mode::stop);
+
+  options (int start,
+           int& argc,
+           char** argv,
+           int& end,
+           bool erase = false,
+           ::cli::unknown_mode option = ::cli::unknown_mode::fail,
+           ::cli::unknown_mode argument = ::cli::unknown_mode::stop);
+
+  options (::cli::scanner&,
+           ::cli::unknown_mode option = ::cli::unknown_mode::fail,
+           ::cli::unknown_mode argument = ::cli::unknown_mode::stop);
+
+  options ();
+
+  // Option accessors.
+  //
+  const bool&
+  help () const;
+
+  const bool&
+  version () const;
+
+  const bool&
+  v () const;
+
+  const std::uint16_t&
+  verbose () const;
+
+  // Print usage information.
+  //
+  static void
+  print_usage (::std::ostream&);
+
+  // Implementation details.
+  //
+  protected:
+  bool
+  _parse (const char*, ::cli::scanner&);
+
+  private:
+  void
+  _parse (::cli::scanner&,
+          ::cli::unknown_mode option,
+          ::cli::unknown_mode argument);
+
+  public:
+  bool help_;
+  bool version_;
+  bool v_;
+  std::uint16_t verbose_;
+};
+
+#include <build/options.ixx>
+
+// Begin epilogue.
+//
+//
+// End epilogue.
+
+#endif // BUILD_OPTIONS