/*
 * banner - make posters
 * Copyright (C) 1999-2001 Joerg Schaible
 *
 * 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/>.
 *
 * See the COPYING file for full license information.
 */

#if HAVE_CONFIG_H
# include "config.h"
#endif

#include "common.h"

static const char versionID[] = PACKAGE_VERSION;
static const char revID[] =
  "$Id$";
static const char copyrightID[] =
  "Copyright (c) 1999-2001\nJoerg Schaible. All rights reserved.\nLicensed under GPLv3+\n";

static void printTopDescription (FILE * f, char *name);
static void printBottomDescription (FILE * f, char *name);
static const char *getVersion (void);
static void usage (FILE * f, char *name);
static void help (FILE * f, char *name);
static void version (FILE * f, char *name);
static void license (FILE * f, char *name);

static char *program_name;
static poptContext optCon;

static char *c = "X";
static int w = 80;
static TEXTMETRIC tm;
static HFONT hFont;
static HBITMAP hBmp;
static HBITMAP hBmpOrg;
static HDC hMem;
static RECT rt;
static BITMAP bm;
static BITMAPINFO bmi;
static unsigned char *buffer;

void
initialize ()
{
  HDC hScreen;
  hFont = GetStockObject (ANSI_FIXED_FONT);
  hScreen = GetDC (0);
  hMem = CreateCompatibleDC (hScreen);
  ReleaseDC (0, hScreen);

  SelectObject (hMem, hFont);
  GetTextMetrics (hMem, &tm);

  hBmp = CreateBitmap (w, tm.tmHeight, 1, 1, 0);
  GetObject (hBmp, sizeof (bm), &bm);
  memset (&bmi.bmiHeader, 0, sizeof (BITMAPINFOHEADER));
  bmi.bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
  bmi.bmiHeader.biWidth = bm.bmWidth;
  bmi.bmiHeader.biHeight = bm.bmHeight;
  bmi.bmiHeader.biPlanes = 1;
  bmi.bmiHeader.biCompression = BI_RGB;
  bmi.bmiHeader.biBitCount = 1;
  bmi.bmiHeader.biSizeImage =
    ((((unsigned int) bm.bmWidth + 31) & ~31) >> 3) * bm.bmHeight;
  bmi.bmiHeader.biClrUsed = 2;
  buffer = (unsigned char *) malloc (bmi.bmiHeader.biSizeImage);

  hBmpOrg = SelectObject (hMem, hBmp);
  SelectObject (hMem, GetStockObject (WHITE_BRUSH));
  SelectObject (hMem, GetStockObject (WHITE_PEN));

  SetBkColor (hMem, RGB (0, 0, 0));
  SetTextColor (hMem, RGB (255, 255, 255));
  SetBkMode (hMem, OPAQUE);

  rt.top = 0;
  rt.left = 0;
  rt.right = w;
  rt.bottom = tm.tmHeight;
}

void
deinitialize ()
{
  SelectObject (hMem, hBmpOrg);
  DeleteObject (hBmp);
  DeleteDC (hMem);
  free (buffer);
}

int
print_line (const char *line)
{
  int x, y;
  int len = strlen (line);
  if (len > (w / tm.tmMaxCharWidth))
    len = (w / tm.tmMaxCharWidth);

  Rectangle (hMem, 0, 0, rt.right, rt.bottom);
  DrawText (hMem, line, len, &rt, DT_NOCLIP | DT_NOPREFIX | DT_SINGLELINE);

  SelectObject (hMem, hBmpOrg);
  GetDIBits (hMem, hBmp, 0, bmi.bmiHeader.biHeight, buffer,
             (LPBITMAPINFO) & bmi.bmiHeader, DIB_RGB_COLORS);
  SelectObject (hMem, hBmp);

  for (y = tm.tmHeight; y--;)
    {
      unsigned char *line =
        buffer + y * (bmi.bmiHeader.biSizeImage / bmi.bmiHeader.biHeight);

      for (x = 0; x < len * tm.tmMaxCharWidth; ++x)
        {
          unsigned char byte = *(line + (x / 8));
          putchar ((byte & (1 << (7 - ((int) x % 8)))) ? *c : ' ');
        }

      putchar ('\n');
    }
  return 0;
}

int
main (int argc, const char **argv)
{
  const char **rest;
  int rc;
  int ec = 0;
  int i;

  struct poptOption generalOptionsTable[] = {
    {"char", 'c', POPT_ARG_STRING, &c, 'c',
     "use character <X>", "X"},
    {"width", 'w', POPT_ARG_INT, &w, 'w',
     "set display width to <80> ", "80"},
    {NULL, '\0', 0, NULL, 0, NULL, NULL}
  };

  struct poptOption helpOptionsTable[] = {
    {"help", '?', POPT_ARG_NONE, NULL, '?',
     "Show this help message", NULL},
    {"usage", '\0', POPT_ARG_NONE, NULL, 'u',
     "Display brief usage message", NULL},
    {"version", '\0', POPT_ARG_NONE, NULL, 'v',
     "Display version information", NULL},
    {"license", '\0', POPT_ARG_NONE, NULL, 'l',
     "Display licensing information", NULL},
    {NULL, '\0', 0, NULL, 0, NULL, NULL}
  };

  struct poptOption opt[] = {
    {NULL, '\0', POPT_ARG_INCLUDE_TABLE, generalOptionsTable, 0,
     "General options", NULL},
    {NULL, '\0', POPT_ARG_INCLUDE_TABLE, helpOptionsTable, 0,
     "Help options", NULL},
    {NULL, '\0', 0, NULL, 0, NULL, NULL}
  };

  if ((program_name = strdup (argv[0])) == NULL)
    {
      fprintf (stderr, "%s: memory allocation error\n", argv[0]);
      exit (1);
    }
  optCon = poptGetContext (NULL, argc, argv, opt, 0);
  poptSetOtherOptionHelp (optCon, "A string to print...");

  while ((rc = poptGetNextOpt (optCon)) > 0)
    {
      switch (rc)
        {
        case '?':
          help (stdout, program_name);
          goto exit;
        case 'u':
          usage (stdout, program_name);
          goto exit;
        case 'v':
          version (stdout, program_name);
          goto exit;
        case 'l':
          license (stdout, program_name);
          goto exit;
        case 'c':              /* no additional action needed */
          break;
        case 'w':              /* no additional action needed */
          break;
        }
    }
  if (rc < -1)
    {
      fprintf (stderr, "%s: bad argument %s: %s\n",
               program_name, poptBadOption (optCon, POPT_BADOPTION_NOALIAS),
               poptStrerror (rc));
      ec = 2;
      goto exit;
    }
  rest = poptGetArgs (optCon);

  if (rest == NULL)
    {
      fprintf (stderr, "%s: not enough arguments\n", program_name);
      usage (stderr, program_name);
    }
  else
    {
      initialize ();
      while (*rest && !ec)
        {
          ec |= print_line (*rest);
          rest++;
        }
      deinitialize ();
    }

exit:
  poptFreeContext (optCon);
  free (program_name);
  return (ec);
}

static const char *
getVersion ()
{
  return versionID;
}

static void
printTopDescription (FILE * f, char *name)
{
  fprintf (f, "%s is part of cygutils version %s\n", name, getVersion ());
  fprintf (f, "  Prints a string enlarged as a banner on the screen.\n\n");
}

static void
printBottomDescription (FILE * f, char *name)
{
  fprintf (f,
           "\nThis version works the same way as System V'S banner does:\n");
  fprintf (f, "The banner text is displayed horizontally.\n");
}

static
printLicense (FILE * f, char *name)
{
  fprintf (f,
           "This program is free software: you can redistribute it and/or modify\n"
           "it under the terms of the GNU General Public License as published by\n"
           "the Free Software Foundation, either version 3 of the License, or\n"
           "(at your option) any later version.\n\n"
           "This program is distributed in the hope that it will be useful,\n"
           "but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
           "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\n"
           "GNU General Public License for more details.\n\n"
           "You should have received a copy of the GNU General Public License\n"
           "along with this program.  If not, see <http://www.gnu.org/licenses/>.\n\n"
           "See the COPYING file for full license information.\n");
}

static void
usage (FILE * f, char *name)
{
  poptPrintUsage (optCon, f, 0);
}

static void
help (FILE * f, char *name)
{
  printTopDescription (f, name);
  poptPrintHelp (optCon, f, 0);
  printBottomDescription (f, name);
}

static void
version (FILE * f, char *name)
{
  printTopDescription (f, name);
}

static void
license (FILE * f, char *name)
{
  printTopDescription (f, name);
  printLicense (f, name);
}
