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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* 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"
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
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