/**
 * $Id$
 *
 * ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
 *
 * 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. The Blender
 * Foundation also sells licenses for use in proprietary software under
 * the Blender License.  See http://www.blender.org/BL/ for information
 * about this.
 *
 * 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.
 *
 * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): none yet.
 *
 * ***** END GPL/BL DUAL LICENSE BLOCK *****
 * Windows-posix compatibility layer, windows-specific functions.
 */

#ifdef WIN32

#include <stdlib.h>
#include <stdio.h>

#include "MEM_guardedalloc.h"

#include "BLI_blenlib.h"
#include "BLI_util.h"
#include "BLI_winstuff.h"


void RegisterBlendExtension(char * str) {
	LONG lresult;
	HKEY hkey = 0;
	DWORD dwd = 0;
	char buffer[128];

	lresult = RegCreateKeyEx(HKEY_CLASSES_ROOT, "blendfile\\shell\\open\\command", 0,
		"", REG_OPTION_VOLATILE, KEY_ALL_ACCESS, NULL, &hkey, &dwd);

	if (lresult == ERROR_SUCCESS) {
		sprintf(buffer, "\"%s\" \"%%1\"", str);
		lresult = RegSetValueEx(hkey, NULL, 0, REG_SZ, buffer, strlen(buffer) + 1);
		RegCloseKey(hkey);
	}

	lresult = RegCreateKeyEx(HKEY_CLASSES_ROOT, "blendfile\\DefaultIcon", 0,
		"", REG_OPTION_VOLATILE, KEY_ALL_ACCESS, NULL, &hkey, &dwd);

	if (lresult == ERROR_SUCCESS) {
		sprintf(buffer, "\"%s\",1", str);
		lresult = RegSetValueEx(hkey, NULL, 0, REG_SZ, buffer, strlen(buffer) + 1);
		RegCloseKey(hkey);
	}

	lresult = RegCreateKeyEx(HKEY_CLASSES_ROOT, ".blend", 0,
		"", REG_OPTION_VOLATILE, KEY_ALL_ACCESS, NULL, &hkey, &dwd);

	if (lresult == ERROR_SUCCESS) {
		sprintf(buffer, "%s", "blendfile");
		lresult = RegSetValueEx(hkey, NULL, 0, REG_SZ, buffer, strlen(buffer) + 1);
		RegCloseKey(hkey);
	}
}

static void strlower (char *str) {
	while (*str) {
		*str= tolower(*str);
		str++;
	}
}

static void strnlower (char *str, int n) {
	while (n>0 && *str) {
		*str= tolower(*str);
		str++;
		n--;
	}
}

int strcasecmp (char *s1, char *s2) {
	char *st1, *st2;
	int r;
	
	st1= MEM_mallocN(strlen(s1)+1, "temp string");
	strcpy(st1, s1);

	st2= MEM_mallocN(strlen(s2)+1, "temp string");
	strcpy(st2, s2);

	strlower(st1);
	strlower(st2);
	r= strcmp (st1, st2);
	
	MEM_freeN(st1);
	MEM_freeN(st2);

	return r;
}

int strncasecmp (char *s1, char *s2, int n) {
	char *st1, *st2;
	int r;
	
	st1= MEM_mallocN(n, "temp string");
	memcpy(st1, s1, n);

	st2= MEM_mallocN(n, "temp string");
	memcpy(st2, s2, n);

	strnlower(st1, n);
	strnlower(st2, n);

	r= strncmp (st1, st2, n);
	
	MEM_freeN(st1);
	MEM_freeN(st2);

	return r;	
}

DIR *opendir (const char *path) {
	if (GetFileAttributes(path) & FILE_ATTRIBUTE_DIRECTORY) {
		DIR *newd= MEM_mallocN(sizeof(DIR), "opendir");

		newd->handle = INVALID_HANDLE_VALUE;
		sprintf(newd->path, "%s/*.*",path);
		
		newd->direntry.d_ino= 0;
		newd->direntry.d_off= 0;
		newd->direntry.d_reclen= 0;
		newd->direntry.d_name= NULL;
		
		return newd;
	} else {
		return NULL;
	}
}

struct dirent *readdir(DIR *dp) {
	if (dp->direntry.d_name) {
		MEM_freeN(dp->direntry.d_name);
		dp->direntry.d_name= NULL;
	}
		
	if (dp->handle==INVALID_HANDLE_VALUE) {
		dp->handle= FindFirstFile(dp->path, &(dp->data));
		if (dp->handle==INVALID_HANDLE_VALUE)
			return NULL;
			
		dp->direntry.d_name= BLI_strdup(dp->data.cFileName);

		return &dp->direntry;
	} else if (FindNextFile (dp->handle, &(dp->data))) {
		dp->direntry.d_name= BLI_strdup(dp->data.cFileName);

		return &dp->direntry;
	} else {
		return NULL;
	}
}

int closedir (DIR *dp) {
	if (dp->direntry.d_name) MEM_freeN(dp->direntry.d_name);
	if (dp->handle!=INVALID_HANDLE_VALUE) FindClose(dp->handle);

	MEM_freeN(dp);
	
	return 0;
}

#else

void BLI_WINSTUFF_C_IS_EMPTY_FOR_UNIX(void) 
{
  /*intentionally empty*/
}

#endif