/* Gdk-Pixbuf-CSource - GdkPixbuf based image CSource generator
 * Copyright (C) 1999, 2001 Tim Janik
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */
#include "config.h"

#include "../gtk/gtkversion.h"	/* versioning */
#include "gdk-pixbuf.h"
#include "gdk-pixdata.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>


/* --- defines --- */
#undef	G_LOG_DOMAIN
#define	G_LOG_DOMAIN	"Gdk-Pixbuf-CSource"
#define PRG_NAME        "gdk-pixbuf-csource"
#define PKG_NAME        "Gtk+"
#define PKG_HTTP_HOME   "http://www.gtk.org"


/* --- prototypes --- */
static void	parse_args	(gint    *argc_p,
				 gchar ***argv_p);
static void	print_blurb	(FILE    *bout,
				 gboolean print_help);


/* --- variables --- */
static guint    gen_type = GDK_PIXDATA_DUMP_PIXDATA_STREAM;
static guint    gen_ctype = GDK_PIXDATA_DUMP_GTYPES | GDK_PIXDATA_DUMP_STATIC | GDK_PIXDATA_DUMP_CONST;
static gboolean use_rle = TRUE;
static gboolean with_decoder = FALSE;
static gchar   *image_name = "my_pixbuf";
static gboolean	build_list = FALSE;


/* --- functions --- */
static void
print_csource (FILE *f_out,
	       GdkPixbuf *pixbuf)
{
  GdkPixdata pixdata;
  gpointer free_me;
  GString *gstring;

  free_me = gdk_pixdata_from_pixbuf (&pixdata, pixbuf, use_rle);
  gstring = gdk_pixdata_to_csource (&pixdata, image_name,
				    gen_type | gen_ctype |
				    (with_decoder ? GDK_PIXDATA_DUMP_RLE_DECODER : 0));

  fprintf (f_out, "%s\n", gstring->str);

  g_free (free_me);
}

int
main (int   argc,
      char *argv[])
{
  GdkPixbuf *pixbuf;
  GError *error = NULL;

  /* initialize glib/GdkPixbuf */
  g_type_init ();

  /* parse args and do fast exits */
  parse_args (&argc, &argv);

  if (!build_list)
    {
      if (argc != 2)
	{
	  print_blurb (stderr, TRUE);
	  return 1;
	}
      
      pixbuf = gdk_pixbuf_new_from_file (argv[1], &error);
      if (!pixbuf)
	{
	  fprintf (stderr, "failed to load \"%s\": %s\n",
		   argv[1],
		   error->message);
	  g_error_free (error);
	  return 1;
	}
      
      print_csource (stdout, pixbuf);
      g_object_unref (pixbuf);
    }
  else /* parse name, file pairs */
    {
      gchar **p = argv + 1;
      guint j = argc - 1;
      gboolean toggle = FALSE;

      while (j--)
	{
	  if (!toggle)
	    image_name = *p++;
	  else
	    {
	      pixbuf = gdk_pixbuf_new_from_file (*p, &error);
	      if (!pixbuf)
		{
		  fprintf (stderr, "failed to load \"%s\": %s\n",
			   *p,
			   error->message);
		  g_error_free (error);
		  return 1;
		}
	      print_csource (stdout, pixbuf);
	      g_object_unref (pixbuf);
	      p++;
	    }
	  toggle = !toggle;
	}
    }
  
  return 0;
}

static void
parse_args (gint    *argc_p,
	    gchar ***argv_p)
{
  guint argc = *argc_p;
  gchar **argv = *argv_p;
  guint i, e;

  for (i = 1; i < argc; i++)
    {
      if (strcmp ("--macros", argv[i]) == 0)
	{
	  gen_type = GDK_PIXDATA_DUMP_MACROS;
	  argv[i] = NULL;
	}
      else if (strcmp ("--struct", argv[i]) == 0)
	{
	  gen_type = GDK_PIXDATA_DUMP_PIXDATA_STRUCT;
	  argv[i] = NULL;
	}
      else if (strcmp ("--stream", argv[i]) == 0)
	{
	  gen_type = GDK_PIXDATA_DUMP_PIXDATA_STREAM;
	  argv[i] = NULL;
	}
      else if (strcmp ("--rle", argv[i]) == 0)
	{
	  use_rle = TRUE;
	  argv[i] = NULL;
	}
      else if (strcmp ("--raw", argv[i]) == 0)
	{
	  use_rle = FALSE;
	  argv[i] = NULL;
	}
      else if (strcmp ("--extern", argv[i]) == 0)
	{
	  gen_ctype &= ~GDK_PIXDATA_DUMP_STATIC;
	  argv[i] = NULL;
	}
      else if (strcmp ("--static", argv[i]) == 0)
	{
	  gen_ctype |= GDK_PIXDATA_DUMP_STATIC;
	  argv[i] = NULL;
	}
      else if (strcmp ("--decoder", argv[i]) == 0)
	{
	  with_decoder = TRUE;
	  argv[i] = NULL;
	}
      else if ((strcmp ("--name", argv[i]) == 0) ||
	       (strncmp ("--name=", argv[i], 7) == 0))
	{
	  gchar *equal = argv[i] + 6;

	  if (*equal == '=')
	    image_name = g_strdup (equal + 1);
	  else if (i + 1 < argc)
	    {
	      image_name = g_strdup (argv[i + 1]);
	      argv[i] = NULL;
	      i += 1;
	    }
	  argv[i] = NULL;
	}
      else if (strcmp ("--build-list", argv[i]) == 0)
	{
	  build_list = TRUE;
	  argv[i] = NULL;
	}
      else if (strcmp ("-h", argv[i]) == 0 ||
	       strcmp ("--help", argv[i]) == 0)
	{
	  print_blurb (stderr, TRUE);
	  argv[i] = NULL;
	  exit (0);
	}
      else if (strcmp ("-v", argv[i]) == 0 ||
	       strcmp ("--version", argv[i]) == 0)
	{
	  print_blurb (stderr, FALSE);
	  argv[i] = NULL;
	  exit (0);
	}
      else if (strcmp (argv[i], "--g-fatal-warnings") == 0)
	{
	  GLogLevelFlags fatal_mask;

	  fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
	  fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
	  g_log_set_always_fatal (fatal_mask);

	  argv[i] = NULL;
	}
    }

  e = 0;
  for (i = 1; i < argc; i++)
    {
      if (e)
	{
	  if (argv[i])
	    {
	      argv[e++] = argv[i];
	      argv[i] = NULL;
	    }
	}
      else if (!argv[i])
	e = i;
    }
  if (e)
    *argc_p = e;
}

static void
print_blurb (FILE    *bout,
	     gboolean print_help)
{
  if (!print_help)
    {
      fprintf (bout, "%s version ", PRG_NAME);
      fprintf (bout, "%u.%u.%u", GTK_MAJOR_VERSION, GTK_MINOR_VERSION, GTK_MICRO_VERSION);
      fprintf (bout, "\n");
      fprintf (bout, "%s comes with ABSOLUTELY NO WARRANTY.\n", PRG_NAME);
      fprintf (bout, "You may redistribute copies of %s under the terms of\n", PRG_NAME);
      fprintf (bout, "the GNU Lesser General Public License which can be found in the\n");
      fprintf (bout, "%s source package. Sources, examples and contact\n", PKG_NAME);
      fprintf (bout, "information are available at %s\n", PKG_HTTP_HOME);
    }
  else
    {
      fprintf (bout, "Usage: %s [options] [image]\n", PRG_NAME);
      fprintf (bout, "       %s [options] --build-list [[name image]...]\n", PRG_NAME);
      fprintf (bout, "  --stream                   generate pixbuf data stream\n");
      fprintf (bout, "  --struct                   generate GdkPixdata structure\n");
      fprintf (bout, "  --macros                   generate image size/pixel macros\n");
      fprintf (bout, "  --rle                      use one byte run-length-encoding\n");
      fprintf (bout, "  --raw                      provide raw image data copy\n");
      fprintf (bout, "  --extern                   generate extern symbols\n");
      fprintf (bout, "  --static                   generate static symbols\n");
      fprintf (bout, "  --decoder                  provide rle decoder\n");
      fprintf (bout, "  --name=identifier          C macro/variable name\n");
      fprintf (bout, "  --build-list               parse (name, image) pairs\n");
      fprintf (bout, "  -h, --help                 show this help message\n");
      fprintf (bout, "  -v, --version              print version informations\n");
      fprintf (bout, "  --g-fatal-warnings         make warnings fatal (abort)\n");
    }
}

