/* * vislib::sys::Path::GetUserHomeDirectoryA */ vislib::StringA vislib::sys::Path::GetUserHomeDirectoryA(void) { #ifdef _WIN32 StringA retval; if (FAILED(::SHGetFolderPathA(NULL, CSIDL_PERSONAL, NULL, 0, retval.AllocateBuffer(MAX_PATH)))) { throw SystemException(ERROR_NOT_FOUND, __FILE__, __LINE__); } #else /* _WIN32 */ char *path = getenv("HOME"); // Crowbar if (path == NULL) { throw SystemException(ENOENT, __FILE__, __LINE__); } StringA retval(path); #endif /* _WIN32 */ if (!retval.EndsWith(SEPARATOR_A)) { retval += SEPARATOR_A; } return retval; }
/* * 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 */ }