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/*=========================================================================
Program: Visualization Toolkit
Module: vtkResourceFileLocator.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkResourceFileLocator.h"
#include "vtkLogger.h"
#include "vtkObjectFactory.h"
#include <vtksys/Encoding.hxx>
#include <vtksys/SystemTools.hxx>
#if defined(_WIN32) && !defined(__CYGWIN__)
#define VTK_PATH_SEPARATOR "\\"
#else
#define VTK_PATH_SEPARATOR "/"
#endif
#define VTK_FILE_LOCATOR_DEBUG_MESSAGE(...) \
vtkVLogF(static_cast<vtkLogger::Verbosity>(this->LogVerbosity), __VA_ARGS__)
#if defined(_WIN32) && !defined(__CYGWIN__)
// Implementation for Windows win32 code but not cygwin
#include <windows.h>
#else
#include <dlfcn.h>
#endif
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkResourceFileLocator);
//------------------------------------------------------------------------------
vtkResourceFileLocator::vtkResourceFileLocator()
: LogVerbosity(vtkLogger::VERBOSITY_TRACE)
{
}
//------------------------------------------------------------------------------
vtkResourceFileLocator::~vtkResourceFileLocator() = default;
//------------------------------------------------------------------------------
std::string vtkResourceFileLocator::Locate(
const std::string& anchor, const std::string& landmark, const std::string& defaultDir)
{
return this->Locate(anchor, { std::string() }, landmark, defaultDir);
}
//------------------------------------------------------------------------------
std::string vtkResourceFileLocator::Locate(const std::string& anchor,
const std::vector<std::string>& landmark_prefixes, const std::string& landmark,
const std::string& defaultDir)
{
vtkVLogScopeF(
static_cast<vtkLogger::Verbosity>(this->LogVerbosity), "looking for '%s'", landmark.c_str());
std::vector<std::string> path_components;
vtksys::SystemTools::SplitPath(anchor, path_components);
while (!path_components.empty())
{
std::string curanchor = vtksys::SystemTools::JoinPath(path_components);
for (const std::string& curprefix : landmark_prefixes)
{
std::string landmarkdir =
curprefix.empty() ? curanchor : curanchor + VTK_PATH_SEPARATOR + curprefix;
const std::string landmarktocheck = landmarkdir + VTK_PATH_SEPARATOR + landmark;
if (vtksys::SystemTools::FileExists(landmarktocheck))
{
VTK_FILE_LOCATOR_DEBUG_MESSAGE("trying file %s -- found!", landmarktocheck.c_str());
return landmarkdir;
}
else
{
VTK_FILE_LOCATOR_DEBUG_MESSAGE("trying file %s -- not found!", landmarktocheck.c_str());
}
}
path_components.pop_back();
}
return defaultDir;
}
//------------------------------------------------------------------------------
std::string vtkResourceFileLocator::GetLibraryPathForSymbolUnix(const char* symbolname)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
(void)symbolname;
return std::string();
#else
void* handle = dlsym(RTLD_DEFAULT, symbolname);
if (!handle)
{
return std::string();
}
Dl_info di;
int ret = dladdr(handle, &di);
if (ret == 0 || !di.dli_saddr || !di.dli_fname)
{
return std::string();
}
return std::string(di.dli_fname);
#endif
}
//------------------------------------------------------------------------------
std::string vtkResourceFileLocator::GetLibraryPathForSymbolWin32(const void* fptr)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
MEMORY_BASIC_INFORMATION mbi;
VirtualQuery(fptr, &mbi, sizeof(mbi));
wchar_t pathBuf[16384];
if (!GetModuleFileNameW(static_cast<HMODULE>(mbi.AllocationBase), pathBuf, sizeof(pathBuf)))
{
return std::string();
}
return vtksys::Encoding::ToNarrow(pathBuf);
#else
(void)fptr;
return std::string();
#endif
}
//------------------------------------------------------------------------------
void vtkResourceFileLocator::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "LogVerbosity: " << this->LogVerbosity << endl;
}
VTK_ABI_NAMESPACE_END
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