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/* MI Command Set - output generating routines.

   Copyright 2000 Free Software Foundation, Inc.

   Contributed by Cygnus Solutions (a Red Hat company).

   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 "mi-out.h"

/* Convenience macro for allocting typesafe memory. */

#ifndef XMALLOC

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

#endif

struct ui_out_data

  {

    int suppress_field_separator;

    int suppress_output;

    int mi_version;

    struct ui_file *buffer;

  };

/* These are the MI output functions */

static void mi_table_begin (struct ui_out *uiout, int nbrofcols,

                            int nr_rows, const char *tblid);

static void mi_table_body (struct ui_out *uiout);

static void mi_table_end (struct ui_out *uiout);

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

                             enum ui_align alig, const char *col_name,

                             const char *colhdr);

static void mi_begin (struct ui_out *uiout, enum ui_out_type type,

                      int level, const char *id);

static void mi_end (struct ui_out *uiout, enum ui_out_type type, int level);

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

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

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

                           enum ui_align alig, const char *fldname);

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

                             enum ui_align alig, const char *fldname,

                             const char *string);

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

                          int width, enum ui_align align,

                          const char *fldname, const char *format,

                          va_list args);

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

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

static void mi_message (struct ui_out *uiout, int verbosity,

                        const char *format, va_list args);

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

static void mi_flush (struct ui_out *uiout);

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

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

   handle initial output in main.c */

struct ui_out_impl mi_ui_out_impl =

{

  mi_table_begin,

  mi_table_body,

  mi_table_end,

  mi_table_header,

  mi_begin,

  mi_end,

  mi_field_int,

  mi_field_skip,

  mi_field_string,

  mi_field_fmt,

  mi_spaces,

  mi_text,

  mi_message,

  mi_wrap_hint,

  mi_flush,

  1, /* Needs MI hacks.  */

};

/* Prototypes for local functions */

extern void _initialize_mi_out (void);

static void field_separator (struct ui_out *uiout);

static void mi_open (struct ui_out *uiout, const char *name,

                     enum ui_out_type type);

static void mi_close (struct ui_out *uiout, enum ui_out_type type);

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

                           char *format,...);

/* Mark beginning of a table */

void

mi_table_begin (struct ui_out *uiout,

                int nr_cols,

                int nr_rows,

                const char *tblid)

{

  struct ui_out_data *data = ui_out_data (uiout);

  mi_open (uiout, tblid, ui_out_type_tuple);

  if (data->mi_version == 0)

    {

      if (nr_rows == 0)

        data->suppress_output = 1;

      else

        mi_open (uiout, "hdr", ui_out_type_list);

      return;

    }

  mi_field_int (uiout, -1/*fldno*/, -1/*width*/, -1/*alin*/,

                "nr_rows", nr_rows);

  mi_field_int (uiout, -1/*fldno*/, -1/*width*/, -1/*alin*/,

                "nr_cols", nr_cols);

  mi_open (uiout, "hdr", ui_out_type_list);

}

/* Mark beginning of a table body */

void

mi_table_body (struct ui_out *uiout)

{

  struct ui_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)

    return;

  /* close the table header line if there were any headers */

  mi_close (uiout, ui_out_type_list);

  if (data->mi_version == 0)

    return;

  mi_open (uiout, "body", ui_out_type_list);

}

/* Mark end of a table */

void

mi_table_end (struct ui_out *uiout)

{

  struct ui_out_data *data = ui_out_data (uiout);

  data->suppress_output = 0;

  if (data->mi_version == 0)

    {

      mi_close (uiout, ui_out_type_tuple);

      return;

    }

  mi_close (uiout, ui_out_type_list); /* body */

  mi_close (uiout, ui_out_type_tuple);

}

/* Specify table header */

void

mi_table_header (struct ui_out *uiout, int width, int alignment,

                 const char *col_name,

                 const char *colhdr)

{

  struct ui_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)

    return;

  if (data->mi_version == 0)

    {

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

      return;

    }

  mi_open (uiout, NULL, ui_out_type_tuple);

  mi_field_int (uiout, 0, 0, 0, "width", width);

  mi_field_int (uiout, 0, 0, 0, "alignment", alignment);

  mi_field_string (uiout, 0, 0, 0, "col_name", col_name);

  mi_field_string (uiout, 0, width, alignment, "colhdr", colhdr);

  mi_close (uiout, ui_out_type_tuple);

}

/* Mark beginning of a list */

void

mi_begin (struct ui_out *uiout,

          enum ui_out_type type,

          int level,

          const char *id)

{

  struct ui_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)

    return;

  mi_open (uiout, id, type);

}

/* Mark end of a list */

void

mi_end (struct ui_out *uiout,

        enum ui_out_type type,

        int level)

{

  struct ui_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)

    return;

  mi_close (uiout, type);

}

/* output an int field */

void

mi_field_int (struct ui_out *uiout, int fldno, int width, int alignment,

              const char *fldname, int value)

{

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

  struct ui_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)

    return;

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

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

}

/* used to ommit a field */

void

mi_field_skip (struct ui_out *uiout, int fldno, int width, int alignment,

               const char *fldname)

{

  struct ui_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)

    return;

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

}

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

   separators are both handled by mi_field_string */

void

mi_field_string (struct ui_out *uiout,

                 int fldno,

                 int width,

                 int align,

                 const char *fldname,

                 const char *string)

{

  struct ui_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)

    return;

  field_separator (uiout);

  if (fldname)

    fprintf_unfiltered (data->buffer, "%s=", fldname);

  fprintf_unfiltered (data->buffer, "\"");

  if (string)

    fputstr_unfiltered (string, '"', data->buffer);

  fprintf_unfiltered (data->buffer, "\"");

}

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

void

mi_field_fmt (struct ui_out *uiout, int fldno,

              int width, enum ui_align align,

              const char *fldname,

              const char *format,

              va_list args)

{

  struct ui_out_data *data = ui_out_data (uiout);

  if (data->suppress_output)

    return;

  field_separator (uiout);

  if (fldname)

    fprintf_unfiltered (data->buffer, "%s=\"", fldname);

  else

    fputs_unfiltered ("\"", data->buffer);

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

  fputs_unfiltered ("\"", data->buffer);

}

void

mi_spaces (struct ui_out *uiout, int numspaces)

{

}

void

mi_text (struct ui_out *uiout, const char *string)

{

}

void

mi_message (struct ui_out *uiout, int verbosity,

            const char *format,

            va_list args)

{

}

void

mi_wrap_hint (struct ui_out *uiout, char *identstring)

{

  wrap_here (identstring);

}

void

mi_flush (struct ui_out *uiout)

{

  struct ui_out_data *data = ui_out_data (uiout);

  gdb_flush (data->buffer);

}

/* local functions */

/* Like mi_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;

  field_separator (uiout);

  if (fldname)

    fprintf_unfiltered (data->buffer, "%s=\"", fldname);

  else

    fputs_unfiltered ("\"", data->buffer);

  va_start (args, format);

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

  fputs_unfiltered ("\"", data->buffer);

  va_end (args);

}

/* access to ui_out format private members */

static void

field_separator (struct ui_out *uiout)

{

  struct ui_out_data *data = ui_out_data (uiout);

  if (data->suppress_field_separator)

    data->suppress_field_separator = 0;

  else

    fputc_unfiltered (',', data->buffer);

}

static void

mi_open (struct ui_out *uiout,

         const char *name,

         enum ui_out_type type)

{

  struct ui_out_data *data = ui_out_data (uiout);

  field_separator (uiout);

  data->suppress_field_separator = 1;

  if (name)

    fprintf_unfiltered (data->buffer, "%s=", name);

  switch (type)

    {

    case ui_out_type_tuple:

      fputc_unfiltered ('{', data->buffer);

      break;

    case ui_out_type_list:

      if (data->mi_version == 0)

        fputc_unfiltered ('{', data->buffer);

      else

        fputc_unfiltered ('[', data->buffer);

      break;

    default:

      internal_error (__FILE__, __LINE__, "bad switch");

    }

}

static void

mi_close (struct ui_out *uiout,

          enum ui_out_type type)

{

  struct ui_out_data *data = ui_out_data (uiout);

  switch (type)

    {

    case ui_out_type_tuple:

      fputc_unfiltered ('}', data->buffer);

      break;

    case ui_out_type_list:

      if (data->mi_version == 0)

        fputc_unfiltered ('}', data->buffer);

      else

        fputc_unfiltered (']', data->buffer);

      break;

    default:

      internal_error (__FILE__, __LINE__, "bad switch");

    }

  data->suppress_field_separator = 0;

}

/* add a string to the buffer */

void

mi_out_buffered (struct ui_out *uiout, char *string)

{

  struct ui_out_data *data = ui_out_data (uiout);

  fprintf_unfiltered (data->buffer, "%s", string);

}

/* clear the buffer */

void

mi_out_rewind (struct ui_out *uiout)

{

  struct ui_out_data *data = ui_out_data (uiout);

  ui_file_rewind (data->buffer);

}

/* dump the buffer onto the specified stream */

static void

do_write (void *data, const char *buffer, long length_buffer)

{

  ui_file_write (data, buffer, length_buffer);

}

void

mi_out_put (struct ui_out *uiout,

            struct ui_file *stream)

{

  struct ui_out_data *data = ui_out_data (uiout);

  ui_file_put (data->buffer, do_write, stream);

  ui_file_rewind (data->buffer);

}

/* initalize private members at startup */

struct ui_out *

mi_out_new (int mi_version)

{

  int flags = 0;

  struct ui_out_data *data = XMALLOC (struct ui_out_data);

  data->suppress_field_separator = 0;

  data->mi_version = mi_version;

  /* FIXME: This code should be using a ``string_file'' and not the

     TUI buffer hack. */

  data->buffer = mem_fileopen ();

  return ui_out_new (&mi_ui_out_impl, data, flags);

}

/* standard gdb initialization hook */

void

_initialize_mi_out (void)

{

  /* nothing happens here */

}