#define _GNU_SOURCE		/* Needed for asprintf() on Linux */
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <consoles.h>
#include <getkey.h>
#include <minmax.h>
#include <setjmp.h>
#include <limits.h>
#include <sha1.h>
#include <base64.h>
#include <colortbl.h>
#ifdef __COM32__
#include <com32.h>
#endif

#include "menu.h"

static int draw_message_file(const char *filename)
{
  FILE *f;
  int ch;
  enum msgname_state {
    st_init,			/* Base state */
    st_si_1,			/* <SI> digit 1 */
    st_si_2,			/* <SI> digit 2 */
    st_skipline,		/* Skip until NL */
  } state = st_init;
  int eof = 0;
  int attr = 0;

  f = fopen(filename, "r");
  if (!f)
    return -1;

  /* Clear screen, hide cursor, default attribute */
  printf("\033e\033%%@\033)0\033(B\3#%03d\033[?25l\033[2J\033[H",
	 message_base_color+0x07);

  while (!eof && (ch = getc(f)) != EOF) {
    switch (state) {
    case st_init:
      switch (ch) {
      case '\f':
	fputs("\033[2J\033[H", stdout);
	break;
      case 15:			/* SI */
	state = st_si_1;
	break;
      case 24:
	state = st_skipline;
	break;
      case 26:
	eof = 1;
	break;
      case '\a':
      case '\n':
      case '\r':
	putchar(ch);
	break;
      default:
	if (ch >= 32)
	  putchar(ch);
	break;
      }
      break;

    case st_si_1:
      attr = hexval(ch) << 4;
      state = st_si_2;
      break;

    case st_si_2:
      attr |= hexval(ch);
      printf("\3#%03d", attr+message_base_color);
      state = st_init;
      break;

    case st_skipline:
      if (ch == '\n')
	state = st_init;
      break;
    }
  }

  fclose(f);
  return 0;
}

int show_message_file(const char *filename, const char *background)
{
  int rv = KEY_NONE;

  if (background && (!menu_background || strcmp(background, menu_background)))
    draw_background(background);
  else
    background = NULL;

  if ( !(rv = draw_message_file(filename)) )
    rv = mygetkey(0);		/* Wait for keypress */

  if (background)
    draw_background(menu_background);

  return rv;
}