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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2008 by Sun Microsystems, Inc.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * $RCSfile: path.cxx,v $
+ * $Revision: 1.1.2.1 $
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#include "sal/config.h"
+
+#if defined WNT
+
+#include <cstddef>
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+
+#include "sal/types.h"
+#include "tools/pathutils.hxx"
+
+namespace cli_ure {
+
+WCHAR * filename(WCHAR * path) {
+ WCHAR * f = path;
+ for (WCHAR * p = path;;) {
+ switch (*p++) {
+ case L'\0':
+ return f;
+ case L'\\':
+ f = p;
+ break;
+ }
+ }
+}
+
+WCHAR * buildPath(
+ WCHAR * path, WCHAR const * frontBegin, WCHAR const * frontEnd,
+ WCHAR const * backBegin, std::size_t backLength)
+{
+ // Remove leading ".." segments in the second path together with matching
+ // segments in the first path that are neither empty nor "." nor ".." nor
+ // end in ":" (which is not foolprove, as it can erroneously erase the start
+ // of a UNC path, but only if the input is bad data):
+ while (backLength >= 2 && backBegin[0] == L'.' && backBegin[1] == L'.' &&
+ (backLength == 2 || backBegin[2] == L'\\'))
+ {
+ if (frontEnd - frontBegin < 2 || frontEnd[-1] != L'\\' ||
+ frontEnd[-2] == L'\\' || frontEnd[-2] == L':' ||
+ (frontEnd[-2] == L'.' &&
+ (frontEnd - frontBegin < 3 || frontEnd[-3] == L'\\' ||
+ (frontEnd[-3] == L'.' &&
+ (frontEnd - frontBegin < 4 || frontEnd[-4] == L'\\')))))
+ {
+ break;
+ }
+ WCHAR const * p = frontEnd - 1;
+ while (p != frontBegin && p[-1] != L'\\') {
+ --p;
+ }
+ if (p == frontBegin) {
+ break;
+ }
+ frontEnd = p;
+ if (backLength == 2) {
+ backBegin += 2;
+ backLength -= 2;
+ } else {
+ backBegin += 3;
+ backLength -= 3;
+ }
+ }
+ if (backLength <
+ static_cast< std::size_t >(MAX_PATH - (frontEnd - frontBegin)))
+ // hopefully std::size_t is large enough
+ {
+ WCHAR * p;
+ if (frontBegin == path) {
+ p = const_cast< WCHAR * >(frontEnd);
+ } else {
+ p = path;
+ while (frontBegin != frontEnd) {
+ *p++ = *frontBegin++;
+ }
+ }
+ for (; backLength > 0; --backLength) {
+ *p++ = *backBegin++;
+ }
+ *p = L'\0';
+ return p;
+ } else {
+ SetLastError(ERROR_FILENAME_EXCED_RANGE);
+ return NULL;
+ }
+}
+
+WCHAR * resolveLink(WCHAR * path) {
+ HANDLE h = CreateFileW(
+ path, FILE_READ_DATA, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
+ if (h == INVALID_HANDLE_VALUE) {
+ return NULL;
+ }
+ char p1[MAX_PATH];
+ DWORD n;
+ BOOL ok = ReadFile(h, p1, MAX_PATH, &n, NULL);
+ CloseHandle(h);
+ if (!ok) {
+ return NULL;
+ }
+ WCHAR p2[MAX_PATH];
+ std::size_t n2 = 0;
+ bool colon = false;
+ for (DWORD i = 0; i < n;) {
+ unsigned char c = static_cast< unsigned char >(p1[i++]);
+ switch (c) {
+ case '\0':
+ SetLastError(ERROR_BAD_PATHNAME);
+ return NULL;
+ case '\x0A':
+ case '\x0D':
+ if (n2 == MAX_PATH) {
+ SetLastError(ERROR_FILENAME_EXCED_RANGE);
+ return NULL;
+ }
+ p2[n2] = L'\0';
+ break;
+ case ':':
+ colon = true;
+ // fall through
+ default:
+ // Convert from UTF-8 to UTF-16:
+ if (c <= 0x7F) {
+ p2[n2++] = c;
+ } else if (c >= 0xC2 && c <= 0xDF && i < n &&
+ static_cast< unsigned char >(p1[i]) >= 0x80 &&
+ static_cast< unsigned char >(p1[i]) <= 0xBF)
+ {
+ p2[n2++] = ((c & 0x1F) << 6) |
+ (static_cast< unsigned char >(p1[i++]) & 0x3F);
+ } else if (n - i > 1 &&
+ ((c == 0xE0 &&
+ static_cast< unsigned char >(p1[i]) >= 0xA0 &&
+ static_cast< unsigned char >(p1[i]) <= 0xBF) ||
+ ((c >= 0xE1 && c <= 0xEC || c >= 0xEE && c <= 0xEF) &&
+ static_cast< unsigned char >(p1[i]) >= 0x80 &&
+ static_cast< unsigned char >(p1[i]) <= 0xBF) ||
+ (c == 0xED &&
+ static_cast< unsigned char >(p1[i]) >= 0x80 &&
+ static_cast< unsigned char >(p1[i]) <= 0x9F)) &&
+ static_cast< unsigned char >(p1[i + 1]) >= 0x80 &&
+ static_cast< unsigned char >(p1[i + 1]) <= 0xBF)
+ {
+ p2[n2++] = ((c & 0x0F) << 12) |
+ ((static_cast< unsigned char >(p1[i]) & 0x3F) << 6) |
+ (static_cast< unsigned char >(p1[i + 1]) & 0x3F);
+ i += 2;
+ } else if (n - 2 > 1 &&
+ ((c == 0xF0 &&
+ static_cast< unsigned char >(p1[i]) >= 0x90 &&
+ static_cast< unsigned char >(p1[i]) <= 0xBF) ||
+ (c >= 0xF1 && c <= 0xF3 &&
+ static_cast< unsigned char >(p1[i]) >= 0x80 &&
+ static_cast< unsigned char >(p1[i]) <= 0xBF) ||
+ (c == 0xF4 &&
+ static_cast< unsigned char >(p1[i]) >= 0x80 &&
+ static_cast< unsigned char >(p1[i]) <= 0x8F)) &&
+ static_cast< unsigned char >(p1[i + 1]) >= 0x80 &&
+ static_cast< unsigned char >(p1[i + 1]) <= 0xBF &&
+ static_cast< unsigned char >(p1[i + 2]) >= 0x80 &&
+ static_cast< unsigned char >(p1[i + 2]) <= 0xBF)
+ {
+ sal_Int32 u = ((c & 0x07) << 18) |
+ ((static_cast< unsigned char >(p1[i]) & 0x3F) << 12) |
+ ((static_cast< unsigned char >(p1[i + 1]) & 0x3F) << 6) |
+ (static_cast< unsigned char >(p1[i + 2]) & 0x3F);
+ i += 3;
+ p2[n2++] = static_cast< WCHAR >(((u - 0x10000) >> 10) | 0xD800);
+ p2[n2++] = static_cast< WCHAR >(
+ ((u - 0x10000) & 0x3FF) | 0xDC00);
+ } else {
+ SetLastError(ERROR_BAD_PATHNAME);
+ return NULL;
+ }
+ break;
+ }
+ }
+ WCHAR * end;
+ if (colon || p2[0] == L'\\') {
+ // Interpret p2 as an absolute path:
+ end = path;
+ } else {
+ // Interpret p2 as a relative path:
+ end = filename(path);
+ }
+ return buildPath(path, path, end, p2, n2);
+}
+
+}
+
+#endif