//!
//! link() wrapper
//!
int link(const String& oldPath, const String& newPath)
{
String::W oldPathW(oldPath.widen());
String::W newPathW(newPath.widen());
int rc = (CreateHardLinkW(newPathW, oldPathW, 0) != 0)? resetErr(): setErr();
return rc; //0==success
}
//!
//! rename() wrapper
//!
int rename(const String& oldPath, const String& newPath)
{
String::W oldPathW(oldPath.widen());
String::W newPathW(newPath.widen());
int rc = (MoveFileW(oldPathW, newPathW) != 0)? resetErr(): setErr();
return rc; //0==success
}
//!
//! CopyFile() wrapper. This Win32 API is technically not part of the
//! c-runtime library, but it fits here best.
//!
int copy(const String& srcPath, const String& dstPath, bool failIfExists)
{
String::W srcPathW(srcPath.widen());
String::W dstPathW(dstPath.widen());
int rc = (CopyFileW(srcPathW, dstPathW, failIfExists) != 0)? resetErr(): setErr();
return rc; //0==success
}
//!
//! Minimal chmod() emulation. Change given path accessibility specified by
//! mode (00=readonly, 02=writable). Return 0 if successful. Return non-zero
//! otherwise.
//!
int chmod(const String& path, int mode)
{
int rc;
String::W pathW(path.widen());
unsigned int attr = GetFileAttributesW(pathW);
if (attr != INVALID_FILE_ATTRIBUTES)
{
switch (mode)
{
case 00:
rc = ((attr & FILE_ATTRIBUTE_READONLY) == 0)?
setAttr(pathW, attr | FILE_ATTRIBUTE_READONLY):
resetErr();
break;
case 02:
rc = ((attr & FILE_ATTRIBUTE_READONLY) != 0)?
setAttr(pathW, attr & ~FILE_ATTRIBUTE_READONLY):
resetErr();
break;
default:
rc = (_set_errno(EINVAL), -1);
break;
}
}
else
{
rc = setErr();
}
return rc; //0==success
}
//!
//! putenv() wrapper. If v is zero, remove the environment variable named k.
//! Otherwise, create or update the environment key-value pair.
//!
bool putenv(const String& k, const String* v)
{
String::W kW(k.widen());
bool ok;
if (v == 0)
{
// SetEnvironmentVariableW() in win7 (but not other platforms?) is ok for a nonexistent variable.
wchar_t* vW = 0;
ok = (GetEnvironmentVariableW(kW, vW, 0) > 0)? (SetEnvironmentVariableW(kW, 0) != 0): false;
}
else
{
String::W vW(v->widen());
ok = (SetEnvironmentVariableW(kW, vW) != 0);
}
return ok;
}
//!
//! getenv() wrapper. Return true if found.
//!
bool getenv(const String& k, String& v, bool expandEnv)
{
String::W kW(k.widen());
wchar_t* vW = new wchar_t[EBUF_SIZ];
size_t numWchars = GetEnvironmentVariableW(kW, vW, EBUF_SIZ - 1);
bool ok = ((numWchars > 0) || (GetLastError() != ERROR_ENVVAR_NOT_FOUND));
if (ok && expandEnv)
{
vW[numWchars] = 0;
wchar_t* xW = new wchar_t[EBUF_SIZ];
size_t n = ExpandEnvironmentStringsW(vW, xW, EBUF_SIZ - 1);
n? v.reset(xW, n): v.reset(vW, numWchars);
delete[] xW;
}
else
{
v.reset(vW, numWchars);
}
delete[] vW;
return ok;
}
//!
//! unlink() wrapper
//!
int unlink(const String& path)
{
String::W pathW(path.widen());
int rc = (DeleteFileW(pathW) != 0)? resetErr(): setErr();
return rc; //0==success
}
//!
//! rmdir() wrapper
//!
int rmdir(const String& path)
{
String::W pathW(path.widen());
int rc = (RemoveDirectoryW(pathW) != 0)? resetErr(): setErr();
return rc; //0==success
}
//!
//! mkdir() wrapper
//!
int mkdir(const String& path)
{
String::W pathW(path.widen());
int rc = (CreateDirectoryW(pathW, 0) != 0)? resetErr(): setErr();
return rc; //0==success
}
//!
//! chdir() wrapper
//!
int chdir(const String& path)
{
String::W pathW(path.widen());
int rc = (SetCurrentDirectoryW(pathW) != 0)? resetErr(): setErr();
return rc; //0==success
}
