1 files changed, 249 insertions, 0 deletions
diff --git a/gnuradio-runtime/lib/error_handler.cc b/gnuradio-runtime/lib/error_handler.cc
new file mode 100644
index 0000000000..50db15d049
--- /dev/null
+++ b/gnuradio-runtime/lib/error_handler.cc
@@ -0,0 +1,249 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005,2013 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+/*
+ * This code is based on error.cc from the "Click Modular Router".
+ * Original copyright follows:
+ */
+/*
+ * error.{cc,hh} -- flexible classes for error reporting
+ * Eddie Kohler
+ *
+ * Copyright (c) 1999-2000 Massachusetts Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, subject to the conditions
+ * listed in the Click LICENSE file. These conditions include: you must
+ * preserve this copyright notice, and you cannot mention the copyright
+ * holders in advertising related to the Software without their permission.
+ * The Software is provided WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED. This
+ * notice is a summary of the Click LICENSE file; the license in that file is
+ * legally binding.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gnuradio/error_handler.h>
+#include <assert.h>
+#include <stdexcept>
+#include <unistd.h>
+
+#ifdef HAVE_IO_H
+#include <io.h>
+#endif
+
+namespace gr {
+
+  static error_handler *s_default_handler = 0;
+  static error_handler *s_silent_handler = 0;
+
+  bool
+  error_handler::has_default_handler()
+  {
+    return s_default_handler != 0;
+  }
+
+  void
+  error_handler::set_default_handler(error_handler *errh)
+  {
+    s_default_handler = errh;
+  }
+
+  error_handler *
+  error_handler::default_handler()
+  {
+    assert(s_default_handler != 0);
+    return s_default_handler;
+  }
+
+  error_handler *
+  error_handler::silent_handler()
+  {
+    assert(s_silent_handler != 0);
+    return s_silent_handler;
+  }
+
+  // ----------------------------------------------------------------
+
+  error_handler::~error_handler()
+  {
+    // nop
+  }
+
+  void
+  error_handler::debug(const char *format, ...)
+  {
+    va_list val;
+    va_start(val, format);
+    verror(ERR_DEBUG, format, val);
+    va_end(val);
+  }
+
+  void
+  error_handler::message(const char *format, ...)
+  {
+    va_list val;
+    va_start(val, format);
+    verror(ERR_MESSAGE, format, val);
+    va_end(val);
+  }
+
+  void
+  error_handler::warning(const char *format, ...)
+  {
+    va_list val;
+    va_start(val, format);
+    verror(ERR_WARNING, format, val);
+    va_end(val);
+  }
+
+  void
+  error_handler::error(const char *format, ...)
+  {
+    va_list val;
+    va_start(val, format);
+    verror(ERR_ERROR, format, val);
+    va_end(val);
+  }
+
+  void
+  error_handler::fatal(const char *format, ...)
+  {
+    va_list val;
+    va_start(val, format);
+    verror(ERR_FATAL, format, val);
+    va_end(val);
+  }
+
+  void
+  error_handler::verror(seriousness s, const char *format, va_list val)
+  {
+    std::string text = make_text(s, format, val);
+    handle_text(s, text);
+    count_error(s);
+  }
+
+  void
+  error_handler::verror_text(seriousness s, const std::string &text)
+  {
+    // text is already made
+    handle_text(s, text);
+    count_error(s);
+  }
+
+  std::string
+  error_handler::make_text(seriousness s, const char *format, va_list val)
+  {
+    char text_buf[4096];
+    vsnprintf(text_buf, sizeof(text_buf), format, val);
+    text_buf[sizeof(text_buf)-1] = 0;
+    return text_buf;
+  }
+
+  // ----------------------------------------------------------------
+
+  void
+  base_error_handler::count_error(seriousness s)
+  {
+    if(s < ERR_WARNING)
+      /* do nothing */;
+    else if(s < ERR_ERROR)
+      d_nwarnings++;
+    else
+      d_nerrors++;
+  }
+
+  // ----------------------------------------------------------------
+
+  file_error_handler::file_error_handler(FILE *file)
+    : d_file(file), d_fd(-1)
+  {
+  }
+
+  file_error_handler::file_error_handler(int file_descriptor)
+  {
+    d_fd = dup(file_descriptor);	// so we can fclose it
+    if(d_fd == -1){
+      perror("gr::file_error_handler:dup");
+      throw std::invalid_argument("gr::file_error_handler:dup");
+    }
+    d_file = fdopen(d_fd, "w");
+    if(d_file == 0){
+      perror("gr::file_error_handler:fdopen");
+      throw std::invalid_argument("gr::file_error_handler:fdopen");
+    }
+  }
+
+  file_error_handler::~file_error_handler()
+  {
+    if(d_fd != -1){
+      fclose(d_file);
+    }
+  }
+
+  void
+  file_error_handler::handle_text(seriousness s, const std::string &text)
+  {
+    if(text.length() <= 0)
+      return;
+
+    fwrite(text.data(), 1, text.length(), d_file);
+    if(text[text.length()-1] != '\n')
+      fwrite("\n", 1, 1, d_file);
+
+    if(d_fd != -1)
+      fflush(d_file);	// keep synced with any other users of fd
+  }
+
+
+  // ----------------------------------------------------------------
+  // static error handlers
+  //
+
+  class silent_error_handler : public base_error_handler
+  {
+  public:
+    silent_error_handler() {}
+    void handle_text(seriousness s, const std::string &str);
+  };
+
+  void
+  silent_error_handler::handle_text(seriousness s, const std::string &str)
+  {
+    // nop
+  }
+
+  class force_init
+  {
+  public:
+    force_init()
+    {
+      s_default_handler = new file_error_handler(stdout);
+      s_silent_handler = new silent_error_handler();
+    }
+  };
+
+  static force_init kludge;
+
+} /* namespace gr */