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/* Output generating routines for GDB CLI.

   Copyright 1999-2000 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 2 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, write to the Free Software

   Foundation, Inc., 59 Temple Place - Suite 330,

   Boston, MA 02111-1307, USA.  */

#include "defs.h"

#include "ui-out.h"

#include "cli-out.h"

#include "gdb_string.h"

/* Convenience macro for allocting typesafe memory. */

#ifndef XMALLOC

#define XMALLOC(TYPE) (TYPE*) xmalloc (sizeof (TYPE))

#endif

struct ui_out_data

  {

    struct ui_file *stream;

  };

/* These are the CLI output functions */

static void cli_table_begin (struct ui_out *uiout, int nbrofcols, char *tblid);

static void cli_table_body (struct ui_out *uiout);

static void cli_table_end (struct ui_out *uiout);

static void cli_table_header (struct ui_out *uiout, int width,

                              enum ui_align alig, char *colhdr);

static void cli_list_begin (struct ui_out *uiout, int list_flag, char *lstid);

static void cli_list_end (struct ui_out *uiout, int list_flag);

static void cli_field_int (struct ui_out *uiout, int fldno, int width,

                           enum ui_align alig, char *fldname, int value);

static void cli_field_skip (struct ui_out *uiout, int fldno, int width,

                            enum ui_align alig, char *fldname);

static void cli_field_string (struct ui_out *uiout, int fldno, int width,

                           enum ui_align alig, char *fldname,

                              const char *string);

static void cli_field_fmt (struct ui_out *uiout, int fldno,

                           int width, enum ui_align align,

                           char *fldname, char *format, va_list args);

static void cli_spaces (struct ui_out *uiout, int numspaces);

static void cli_text (struct ui_out *uiout, char *string);

static void cli_message (struct ui_out *uiout, int verbosity, char *format,

                         va_list args);

static void cli_wrap_hint (struct ui_out *uiout, char *identstring);

static void cli_flush (struct ui_out *uiout);

/* This is the CLI ui-out implementation functions vector */

/* FIXME: This can be initialized dynamically after default is set to

   handle initial output in main.c */

static struct ui_out_impl cli_ui_out_impl =

{

  cli_table_begin,

  cli_table_body,

  cli_table_end,

  cli_table_header,

  cli_list_begin,

  cli_list_end,

  cli_field_int,

  cli_field_skip,

  cli_field_string,

  cli_field_fmt,

  cli_spaces,

  cli_text,

  cli_message,

  cli_wrap_hint,

  cli_flush

};

/* Prototypes for local functions */

extern void _initialize_cli_out PARAMS ((void));

static void field_separator (void);

static void out_field_fmt (struct ui_out *uiout, int fldno, char *fldname,

                           char *format,...);

/* local variables */

/* (none yet) */

/* Mark beginning of a table */

void

cli_table_begin (uiout, nbrofcols, tblid)

     struct ui_out *uiout;

     int nbrofcols;

     char *tblid;

{

}

/* Mark beginning of a table body */

void

cli_table_body (uiout)

     struct ui_out *uiout;

{

  /* first, close the table header line */

  cli_text (uiout, "\n");

}

/* Mark end of a table */

void

cli_table_end (uiout)

     struct ui_out *uiout;

{

}

/* Specify table header */

void

cli_table_header (uiout, width, alignment, colhdr)

     struct ui_out *uiout;

     int width;

     enum ui_align alignment;

     char *colhdr;

{

  cli_field_string (uiout, 0, width, alignment, 0, colhdr);

}

/* Mark beginning of a list */

void

cli_list_begin (uiout, list_flag, lstid)

     struct ui_out *uiout;

     int list_flag;

     char *lstid;

{

}

/* Mark end of a list */

void

cli_list_end (uiout, list_flag)

     struct ui_out *uiout;

     int list_flag;

{

}

/* output an int field */

void

cli_field_int (uiout, fldno, width, alignment, fldname, value)

     struct ui_out *uiout;

     int fldno;

     int width;

     enum ui_align alignment;

     char *fldname;

     int value;

{

  char buffer[20];              /* FIXME: how many chars long a %d can become? */

  sprintf (buffer, "%d", value);

  cli_field_string (uiout, fldno, width, alignment, fldname, buffer);

}

/* used to ommit a field */

void

cli_field_skip (uiout, fldno, width, alignment, fldname)

     struct ui_out *uiout;

     int fldno;

     int width;

     enum ui_align alignment;

     char *fldname;

{

  cli_field_string (uiout, fldno, width, alignment, fldname, "");

}

/* other specific cli_field_* end up here so alignment and field

   separators are both handled by cli_field_string */

void

cli_field_string (struct ui_out *uiout,

                  int fldno,

                  int width,

                  enum ui_align align,

                  char *fldname,

                  const char *string)

{

  int before = 0;

  int after = 0;

  if ((align != ui_noalign) && string)

    {

      before = width - strlen (string);

      if (before <= 0)

        before = 0;

      else

        {

          if (align == ui_right)

            after = 0;

          else if (align == ui_left)

            {

              after = before;

              before = 0;

            }

          else

            /* ui_center */

            {

              after = before / 2;

              before -= after;

            }

        }

    }

  if (before)

    ui_out_spaces (uiout, before);

  if (string)

    out_field_fmt (uiout, fldno, fldname, "%s", string);

  if (after)

    ui_out_spaces (uiout, after);

  if (align != ui_noalign)

    field_separator ();

}

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

void

cli_field_fmt (struct ui_out *uiout, int fldno,

               int width, enum ui_align align,

               char *fldname, char *format, va_list args)

{

  struct ui_out_data *data = ui_out_data (uiout);

  vfprintf_filtered (data->stream, format, args);

  if (align != ui_noalign)

    field_separator ();

}

void

cli_spaces (uiout, numspaces)

     struct ui_out *uiout;

     int numspaces;

{

  struct ui_out_data *data = ui_out_data (uiout);

  print_spaces_filtered (numspaces, data->stream);

}

void

cli_text (uiout, string)

     struct ui_out *uiout;

     char *string;

{

  struct ui_out_data *data = ui_out_data (uiout);

  fputs_filtered (string, data->stream);

}

void

cli_message (struct ui_out *uiout, int verbosity, char *format, va_list args)

{

  struct ui_out_data *data = ui_out_data (uiout);

  if (ui_out_get_verblvl (uiout) >= verbosity)

    vfprintf_unfiltered (data->stream, format, args);

}

void

cli_wrap_hint (uiout, identstring)

     struct ui_out *uiout;

     char *identstring;

{

  wrap_here (identstring);

}

void

cli_flush (uiout)

     struct ui_out *uiout;

{

  struct ui_out_data *data = ui_out_data (uiout);

  gdb_flush (data->stream);

}

/* local functions */

/* Like cli_field_fmt, but takes a variable number of args

   and makes a va_list and does not insert a separator */

/* VARARGS */

static void

out_field_fmt (struct ui_out *uiout, int fldno, char *fldname,

               char *format,...)

{

  struct ui_out_data *data = ui_out_data (uiout);

  va_list args;

  va_start (args, format);

  vfprintf_filtered (data->stream, format, args);

  va_end (args);

}

/* access to ui_out format private members */

static void

field_separator ()

{

  struct ui_out_data *data = ui_out_data (uiout);

  fputc_filtered (' ', data->stream);

}

/* initalize private members at startup */

struct ui_out *

cli_out_new (struct ui_file *stream)

{

  int flags = ui_source_list;

  struct ui_out_data *data = XMALLOC (struct ui_out_data);

  data->stream = stream;

  return ui_out_new (&cli_ui_out_impl, data, flags);

}

/* standard gdb initialization hook */

void

_initialize_cli_out ()

{

  /* nothing needs to be done */

}