/*
* vislib::sys::Path::Resolve
*/
vislib::StringA vislib::sys::Path::Resolve(StringA path, StringA basepath) {
// TODO: Windows shell API resolve does not work in the expected
// way, so we use the same manual approach for Windows and Linux.
#ifdef _WIN32
/* Replace unchefmäßige path separators. */
basepath.Replace('/', SEPARATOR_A);
path.Replace('/', SEPARATOR_A);
#endif /* _WIN32 */
if (Path::IsRelative(basepath)) {
basepath = Resolve(basepath);
}
if (path.IsEmpty()) {
/* Path is empty, i. e. return current working directory. */
return Path::Canonicalise(basepath);
} else if (Path::IsAbsolute(path)) {
/* Path is absolute, just return it. */
return Path::Canonicalise(path);
} else if ((path[0] == MYDOCUMENTS_MARKER_A)
&& ((path.Length() == 1) || path[1] == SEPARATOR_A)) {
/*
* replace leading ~ with users home directory
*/
path.Replace(MYDOCUMENTS_MARKER_A, Path::GetUserHomeDirectoryA(), 1);
return Path::Canonicalise(path);
} else if ((path[0] == SEPARATOR_A) && (path[1] != SEPARATOR_A)) {
/*
* Concatenate current drive and relative path, and canonicalise
* the result.
*/
return Path::Concatenate(basepath.Substring(0, 2), path, true);
} else {
/*
* Concatenate current directory and relative path, and canonicalise
* the result.
*/
return Path::Concatenate(basepath, path, true);
}
}
/*
* vislib::sys::Path::Canonicalise
*/
vislib::StringA vislib::sys::Path::Canonicalise(const StringA& path) {
const StringA DOUBLE_SEPARATOR(Path::SEPARATOR_A, 2);
#ifdef _WIN32
StringA retval;
if (::PathCanonicalizeA(retval.AllocateBuffer(MAX_PATH), path) != TRUE) {
throw SystemException(__FILE__, __LINE__);
}
retval.Replace(DOUBLE_SEPARATOR.PeekBuffer(), SEPARATOR_A);
retval.Replace(DOUBLE_SEPARATOR.PeekBuffer(), SEPARATOR_A);
/* Ensure that a UNC path remains a UNC path. */
if (path.StartsWith(DOUBLE_SEPARATOR)) {
// Note: Double separator replacement above leaves at least one
// separator, so we must only prepend one additional one.
retval.Prepend(SEPARATOR_A);
}
return retval;
#else /* _WIN32 */
const char *BACK_REF = "/..";
const char *CUR_REF = "/."; // Note: "./" does not work
StringA::Size BACK_REF_LEN = ::strlen(BACK_REF);
StringA::Size bwRefPos = 0; // Position of back reference.
StringA::Size remDirPos = 0; // Position of directory to erase.
StringA retval(path);
/* Remove backward references, first. */
while ((bwRefPos = retval.Find(BACK_REF)) != StringA::INVALID_POS) {
if ((bwRefPos > 0)
&& (remDirPos = retval.FindLast(SEPARATOR_A, bwRefPos - 1))
!= StringA::INVALID_POS) {
/* Found inner backward reference, so remove some parts. */
retval.Remove(remDirPos, bwRefPos - remDirPos + BACK_REF_LEN);
} else {
/*
* No other path separator is before this one, so we can remove
* everything before 'bwRefPos'.
*/
retval.Remove(0, bwRefPos + BACK_REF_LEN);
}
}
/*
* Remove references to the current directory. This must be done after
* removing backward references.
*/
retval.Remove(CUR_REF);
/* Remove odd and even number of repeated path separators. */
retval.Replace(DOUBLE_SEPARATOR.PeekBuffer(), SEPARATOR_A);
retval.Replace(DOUBLE_SEPARATOR.PeekBuffer(), SEPARATOR_A);
return retval;
#endif /* _WIN32 */
}
