/*!
 * \copy
 *     Copyright (c)  2013, Cisco Systems
 *     All rights reserved.
 *
 *     Redistribution and use in source and binary forms, with or without
 *     modification, are permitted provided that the following conditions
 *     are met:
 *
 *        * Redistributions of source code must retain the above copyright
 *          notice, this list of conditions and the following disclaimer.
 *
 *        * Redistributions in binary form must reproduce the above copyright
 *          notice, this list of conditions and the following disclaimer in
 *          the documentation and/or other materials provided with the
 *          distribution.
 *
 *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 *     FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *     COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 *     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 *     BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 *     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 *     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 *     ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *     POSSIBILITY OF SUCH DAMAGE.
 *
 */

#ifndef WELS_BOUNDLELOAD_H
#define WELS_BOUNDLELOAD_H

#if defined(MACOS)

#include <dlfcn.h>
#include <carbon/carbon.h>
#include <coreFoundation/CFBundle.h>
#include <string>

int GetCurrentModulePath (char* lpModulePath, const int iPathMax) {
if (lpModulePath == NULL || iPathMax <= 0) {
  return -1;
}

memset (lpModulePath, 0, iPathMax);

char cCurrentPath[PATH_MAX];
memset (cCurrentPath, 0, PATH_MAX);

Dl_info 	dlInfo;
static int  sDummy;
dladdr ((void*)&sDummy, &dlInfo);

strlcpy (cCurrentPath, dlInfo.dli_fname, PATH_MAX);

// whether is self a framework ?
int locateNumber = 1;
struct FSRef currentPath;
OSStatus iStatus = FSPathMakeRef ((unsigned char*)cCurrentPath, &currentPath, NULL);
if (noErr == iStatus) {
  LSItemInfoRecord  info;
  iStatus = LSCopyItemInfoForRef (&currentPath, kLSRequestExtension, &info);
  if (noErr == iStatus && NULL == info.extension) {
    locateNumber = 4;
  }
}
std::string strPath (cCurrentPath);
int pos = std::string::npos;
for (int i = 0; i < locateNumber; i++) {
  pos = strPath.rfind ('/');
  if (std::string::npos == pos) {
    break;
  }
  strPath.erase (pos);
}
if (std::string::npos == pos) {
  return -2;
}
cCurrentPath[pos] = 0;

strlcpy (lpModulePath, cCurrentPath, iPathMax);
strlcat (lpModulePath, "/", iPathMax);

return 0;
}

CFBundleRef LoadBundle (const char* lpBundlePath) {
  if (lpBundlePath == NULL) {
    return NULL;
  }

  struct FSRef bundlePath;
  OSStatus iStatus = FSPathMakeRef ((unsigned char*)lpBundlePath, &bundlePath, NULL);
  if (noErr != iStatus) {
    return NULL;
  }

  CFURLRef bundleURL = CFURLCreateFromFSRef (kCFAllocatorSystemDefault, &bundlePath);
  if (NULL == bundleURL) {
    return NULL;
  }

  // 2.get bundle ref
  CFBundleRef bundleRef = CFBundleCreate (kCFAllocatorSystemDefault, bundleURL);
  CFRelease (bundleURL);

  //	Boolean bReturn = FALSE;
  if (NULL != bundleRef) {
    //	bReturn = CFBundleLoadExecutable(bundleRef);
  }

  return bundleRef;
}

Boolean FreeBundle (CFBundleRef bundleRef) {
  if (NULL != bundleRef) {
    //	CFBundleUnloadExecutable(bundleRef);
    CFRelease (bundleRef);
  }
  return TRUE;
}

void* GetProcessAddress (CFBundleRef bundleRef, const char* lpProcName) {
  void* processAddress = NULL;
  if (NULL != bundleRef) {
    CFStringRef cfProcName = CFStringCreateWithCString (kCFAllocatorSystemDefault, lpProcName, CFStringGetSystemEncoding());
    processAddress = CFBundleGetFunctionPointerForName (bundleRef, cfProcName);
    CFRelease (cfProcName);
  }
  return processAddress;
}
#endif

#endif