/* Output generating routines for GDB CLI.

   Copyright (C) 1999, 2000, 2001, 2002, 2003, 2005, 2007, 2008, 2009, 2010
   Free Software Foundation, Inc.

   Contributed by Cygnus Solutions.
   Written by Fernando Nasser for Cygnus.

   This file is part of GDB.

   This program 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 of the License, or
   (at your option) any later version.

   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include "defs.h"
#include "ui-out.h"
#include "cli-out.h"
#include "tui.h"
#include "gdb_string.h"
#include "gdb_assert.h"

struct tui_ui_out_data
  {
    struct cli_ui_out_data base;

    int line;
    int start_of_line;
  };
typedef struct tui_ui_out_data tui_out_data;

/* This is the TUI ui-out implementation functions vector.  It is
   initialized below in _initialize_tui_out, inheriting the CLI
   version, and overriding a few methods.  */

static struct ui_out_impl tui_ui_out_impl;

/* Output an int field.  */

static void
tui_field_int (struct ui_out *uiout, 
	       int fldno, int width,
	       enum ui_align alignment,
	       const char *fldname, 
	       int value)
{
  tui_out_data *data = ui_out_data (uiout);

  if (data->base.suppress_output)
    return;

  /* Don't print line number, keep it for later.  */
  if (data->start_of_line == 0 && strcmp (fldname, "line") == 0)
    {
      data->start_of_line ++;
      data->line = value;
      return;
    }
  data->start_of_line ++;

  (*cli_ui_out_impl.field_int) (uiout, fldno,
				width, alignment, fldname, value);
}

/* Other cli_field_* end up here so alignment and field separators are
   both handled by tui_field_string.  */

static void
tui_field_string (struct ui_out *uiout,
		  int fldno, int width,
		  enum ui_align align,
		  const char *fldname,
		  const char *string)
{
  tui_out_data *data = ui_out_data (uiout);

  if (data->base.suppress_output)
    return;

  if (fldname && data->line > 0 && strcmp (fldname, "file") == 0)
    {
      data->start_of_line ++;
      if (data->line > 0)
        {
          tui_show_source (string, data->line);
        }
      return;
    }
  
  data->start_of_line++;

  (*cli_ui_out_impl.field_string) (uiout, fldno,
				   width, align,
				   fldname, string);
}

/* This is the only field function that does not align.  */

static void
tui_field_fmt (struct ui_out *uiout, int fldno,
	       int width, enum ui_align align,
	       const char *fldname,
	       const char *format,
	       va_list args)
{
  tui_out_data *data = ui_out_data (uiout);

  if (data->base.suppress_output)
    return;

  data->start_of_line++;

  (*cli_ui_out_impl.field_fmt) (uiout, fldno,
				width, align,
				fldname, format, args);
}

static void
tui_text (struct ui_out *uiout, const char *string)
{
  tui_out_data *data = ui_out_data (uiout);

  if (data->base.suppress_output)
    return;
  data->start_of_line ++;
  if (data->line > 0)
    {
      if (strchr (string, '\n') != 0)
        {
          data->line = -1;
          data->start_of_line = 0;
        }
      return;
    }
  if (strchr (string, '\n'))
    data->start_of_line = 0;

  (*cli_ui_out_impl.text) (uiout, string);
}

struct ui_out *
tui_out_new (struct ui_file *stream)
{
  int flags = 0;

  tui_out_data *data = XMALLOC (tui_out_data);

  /* Initialize base "class".  */
  cli_out_data_ctor (&data->base, stream);

  /* Initialize our fields.  */
  data->line = -1;
  data->start_of_line = 0;

  return ui_out_new (&tui_ui_out_impl, data, flags);
}

/* Standard gdb initialization hook.  */

extern void _initialize_tui_out (void);

void
_initialize_tui_out (void)
{
  /* Inherit the CLI version.  */
  tui_ui_out_impl = cli_ui_out_impl;

  /* Override a few methods.  */
  tui_ui_out_impl.field_int = tui_field_int;
  tui_ui_out_impl.field_string = tui_field_string;
  tui_ui_out_impl.field_fmt = tui_field_fmt;
  tui_ui_out_impl.text = tui_text;
}