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BUG: fix GetLongPathName for WindowsNT

This commit is contained in:
Bill Hoffman 2005-04-11 12:20:24 -04:00
parent 8fe7ea644d
commit 5e39c9ca14
1 changed files with 84 additions and 10 deletions
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94
Source/kwsys/SystemTools.cxx
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@ -23,6 +23,7 @@
# pragma warning (disable: 4786)
#endif
#include <ctype.h>
#include <errno.h>
#ifdef __QNX__
@ -44,13 +45,9 @@
#include <termios.h>
#endif
#if defined(_WIN32) && (defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MINGW32__))
#include <io.h>
// This is to get GetLongPathName which is not really only
// in windows > 0x0500, but there is a bug in the mingw winbase.h file
#ifdef __MINGW32__
#define WINVER 0x0500
#endif
#include <windows.h>
#include <direct.h>
#define _unlink unlink
@ -2240,24 +2237,101 @@ kwsys_stl::string SystemTools::CollapseFullPath(const char* in_path,
return newPath;
}
// OK, some fun stuff to get the actual case of a given path.
// Basically, you just need to call ShortPath, then GetLongPathName,
// However, GetLongPathName is not implemented on windows NT and 95,
// so we have to simulate it on those versions
#ifdef _WIN32
int OldWindowsGetLongPath(kwsys_stl::string const& shortPath,
kwsys_stl::string& longPath )
{
kwsys_stl::string::size_type iFound = shortPath.rfind('/');
if (iFound > 1 && iFound != shortPath.npos)
{
// recurse to peel off components
//
if (OldWindowsGetLongPath(shortPath.substr(0, iFound), longPath) > 0)
{
longPath += '/';
if (shortPath[1] != '/')
{
WIN32_FIND_DATA findData;
// append the long component name to the path
//
if (INVALID_HANDLE_VALUE != ::FindFirstFile
(shortPath.c_str(), &findData))
{
longPath += findData.cFileName;
}
else
{
// if FindFirstFile fails, return the error code
//
longPath = "";
return 0;
}
}
}
}
else
{
longPath = shortPath;
}
return longPath.size();
}
int PortableGetLongPathName(const char* pathIn,
kwsys_stl::string & longPath)
{
kwsys_stl::string shortPath;
if(!SystemTools::GetShortPath(pathIn, shortPath))
{
return 0;
}
HMODULE lh = LoadLibrary("Kernel32.dll");
if(lh)
{
FARPROC proc = GetProcAddress(lh, "GetLongPathNameA");
if(proc)
{
typedef DWORD (WINAPI * GetLongFunctionPtr) (LPCSTR,LPSTR,DWORD);
GetLongFunctionPtr func = (GetLongFunctionPtr)proc;
char buffer[MAX_PATH+1];
int len = (*func)(shortPath.c_str(), buffer, MAX_PATH+1);
if(len == 0 || len > MAX_PATH+1)
{
return 0;
}
longPath = buffer;
return len;
}
}
return OldWindowsGetLongPath(shortPath.c_str(), longPath);
}
#endif
//----------------------------------------------------------------------------
kwsys_stl::string SystemTools::GetActualCaseForPath(const char* p)
{
#ifndef _WIN32
return p;
#else
std::string path;
if(!SystemTools::GetShortPath(p, path))
kwsys_stl::string shortPath;
if(!SystemTools::GetShortPath(p, shortPath))
{
return p;
}
char buffer[MAX_PATH+1];
int len = ::GetLongPathName(path.c_str(), buffer, MAX_PATH+1);
kwsys_stl::string longPath;
int len = PortableGetLongPathName(shortPath.c_str(), longPath);
if(len == 0 || len > MAX_PATH+1)
{
return p;
}
return buffer;
return longPath;
#endif
}