| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* |
| * $Id$ |
| */ |
| |
| #include <windows.h> |
| |
| #include <xercesc/util/FileManagers/WindowsFileMgr.hpp> |
| #include <xercesc/util/Janitor.hpp> |
| #include <xercesc/util/XMLString.hpp> |
| #include <xercesc/util/XMLUniDefs.hpp> |
| |
| #ifndef INVALID_SET_FILE_POINTER |
| #define INVALID_SET_FILE_POINTER ((DWORD)-1) |
| #endif |
| |
| XERCES_CPP_NAMESPACE_BEGIN |
| |
| static bool isBackSlash(XMLCh c) { |
| return c == chBackSlash || |
| c == chYenSign || |
| c == chWonSign; |
| } |
| |
| WindowsFileMgr::WindowsFileMgr() |
| { |
| // Figure out if we are on NT and save that flag for later use |
| OSVERSIONINFO OSVer; |
| OSVer.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); |
| ::GetVersionEx(&OSVer); |
| _onNT = (OSVer.dwPlatformId == VER_PLATFORM_WIN32_NT); |
| } |
| |
| |
| WindowsFileMgr::~WindowsFileMgr() |
| { |
| } |
| |
| |
| FileHandle |
| WindowsFileMgr::fileOpen(const XMLCh* fileName, bool toWrite, MemoryManager* const manager) |
| { |
| // Watch for obvious wierdness |
| if (!fileName) |
| return 0; |
| |
| // |
| // We have to play a little trick here. If its /x:..... |
| // style fully qualified path, we have to toss the leading / |
| // character. |
| // |
| const XMLCh* nameToOpen = fileName; |
| if (*fileName == chForwardSlash) |
| { |
| if (XMLString::stringLen(fileName) > 3) |
| { |
| if (*(fileName + 2) == chColon) |
| { |
| const XMLCh chDrive = *(fileName + 1); |
| if (((chDrive >= chLatin_A) && (chDrive <= chLatin_Z)) |
| || ((chDrive >= chLatin_a) && (chDrive <= chLatin_z))) |
| { |
| nameToOpen = fileName + 1; |
| } |
| } |
| |
| // Similarly for UNC paths |
| if ( *(fileName + 1) == *(fileName + 2) && |
| (*(fileName + 1) == chForwardSlash || |
| *(fileName + 1) == chBackSlash) ) |
| { |
| nameToOpen = fileName + 1; |
| } |
| } |
| } |
| |
| // Ok, this might look stupid but its a semi-expedient way to deal |
| // with a thorny problem. Shift-JIS and some other Asian encodings |
| // are fundamentally broken and map both the backslash and the Yen |
| // sign to the same code point. Transcoders have to pick one or the |
| // other to map '\' to Unicode and tend to choose the Yen sign. |
| // |
| // Unicode Yen or Won signs as directory separators will fail. |
| // |
| // So, we will check this path name for Yen or won signs and, if they are |
| // there, we'll replace them with slashes. |
| // |
| // A further twist: we replace Yen and Won with forward slashes rather |
| // than back slashes. Either form of slash will work as a directory |
| // separator. On Win 95 and 98, though, Unicode back-slashes may |
| // fail to transode back to 8-bit 0x5C with some Unicode converters |
| // to some of the problematic code pages. Forward slashes always |
| // transcode correctly back to 8 bit char * form. |
| // |
| XMLCh *tmpUName = 0; |
| |
| const XMLCh* srcPtr = nameToOpen; |
| while (*srcPtr) |
| { |
| if (*srcPtr == chYenSign || |
| *srcPtr == chWonSign) |
| break; |
| srcPtr++; |
| } |
| |
| // |
| // If we found a yen, then we have to create a temp file name. Else |
| // go with the file name as is and save the overhead. |
| // |
| if (*srcPtr) |
| { |
| tmpUName = XMLString::replicate(nameToOpen, manager); |
| |
| XMLCh* tmpPtr = tmpUName; |
| while (*tmpPtr) |
| { |
| if (*tmpPtr == chYenSign || |
| *tmpPtr == chWonSign) |
| *tmpPtr = chForwardSlash; |
| tmpPtr++; |
| } |
| nameToOpen = tmpUName; |
| } |
| FileHandle retVal = 0; |
| if (_onNT) |
| { |
| retVal = ::CreateFileW |
| ( |
| (LPCWSTR) nameToOpen |
| , toWrite?GENERIC_WRITE:GENERIC_READ |
| , FILE_SHARE_READ |
| , 0 |
| , toWrite?CREATE_ALWAYS:OPEN_EXISTING |
| , toWrite?FILE_ATTRIBUTE_NORMAL:FILE_FLAG_SEQUENTIAL_SCAN |
| , 0 |
| ); |
| } |
| else |
| { |
| // |
| // We are Win 95 / 98. Take the Unicode file name back to (char *) |
| // so that we can open it. |
| // |
| char* tmpName = XMLString::transcode(nameToOpen, manager); |
| retVal = ::CreateFileA |
| ( |
| tmpName |
| , toWrite?GENERIC_WRITE:GENERIC_READ |
| , FILE_SHARE_READ |
| , 0 |
| , toWrite?CREATE_ALWAYS:OPEN_EXISTING |
| , toWrite?FILE_ATTRIBUTE_NORMAL:FILE_FLAG_SEQUENTIAL_SCAN |
| , 0 |
| ); |
| manager->deallocate(tmpName);//delete [] tmpName; |
| } |
| |
| if (tmpUName) |
| manager->deallocate(tmpUName);//delete [] tmpUName; |
| |
| if (retVal == INVALID_HANDLE_VALUE) |
| return 0; |
| |
| return retVal; |
| } |
| |
| |
| FileHandle |
| WindowsFileMgr::fileOpen(const char* path, bool toWrite, MemoryManager* const manager) |
| { |
| XMLCh* tmpFileName = XMLString::transcode(path, manager); |
| ArrayJanitor<XMLCh> janText(tmpFileName, manager); |
| return fileOpen(tmpFileName, toWrite, manager); |
| } |
| |
| |
| FileHandle |
| WindowsFileMgr::openStdIn(MemoryManager* const manager) |
| { |
| // |
| // Get the standard input handle. Duplicate it and return that copy |
| // since the outside world cannot tell the difference and will shut |
| // down this handle when its done with it. If we gave out the orignal, |
| // shutting it would prevent any further output. |
| // |
| HANDLE stdInOrg = ::GetStdHandle(STD_INPUT_HANDLE); |
| if (stdInOrg == INVALID_HANDLE_VALUE) { |
| XMLCh stdinStr[] = {chLatin_s, chLatin_t, chLatin_d, chLatin_i, chLatin_n, chNull}; |
| ThrowXMLwithMemMgr1(XMLPlatformUtilsException, XMLExcepts::File_CouldNotOpenFile, stdinStr, manager); |
| } |
| |
| HANDLE retHandle; |
| if (!::DuplicateHandle |
| ( |
| ::GetCurrentProcess() |
| , stdInOrg |
| , ::GetCurrentProcess() |
| , &retHandle |
| , 0 |
| , FALSE |
| , DUPLICATE_SAME_ACCESS)) |
| { |
| ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotDupHandle, manager); |
| } |
| return retHandle; |
| } |
| |
| |
| void |
| WindowsFileMgr::fileClose(FileHandle f, MemoryManager* const manager) |
| { |
| if (!f) |
| ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::CPtr_PointerIsZero, manager); |
| |
| if (!::CloseHandle(f)) |
| ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotCloseFile, manager); |
| } |
| |
| |
| void |
| WindowsFileMgr::fileReset(FileHandle f, MemoryManager* const manager) |
| { |
| if (!f) |
| ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::CPtr_PointerIsZero, manager); |
| |
| // Seek to the start of the file |
| if (::SetFilePointer(f, 0, 0, FILE_BEGIN) == INVALID_SET_FILE_POINTER) |
| ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotResetFile, manager); |
| } |
| |
| |
| XMLFilePos |
| WindowsFileMgr::curPos(FileHandle f, MemoryManager* const manager) |
| { |
| if (!f) |
| ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::CPtr_PointerIsZero, manager); |
| |
| // Get the current position |
| LONG high=0; |
| DWORD low = ::SetFilePointer(f, 0, &high, FILE_CURRENT); |
| if (low == INVALID_SET_FILE_POINTER && GetLastError()!=NO_ERROR) |
| ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotGetCurPos, manager); |
| |
| return (((XMLFilePos)high) << 32) | low; |
| } |
| |
| |
| XMLFilePos |
| WindowsFileMgr::fileSize(FileHandle f, MemoryManager* const manager) |
| { |
| if (!f) |
| ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::CPtr_PointerIsZero, manager); |
| |
| DWORD high=0; |
| DWORD low=::GetFileSize(f, &high); |
| if(low==INVALID_FILE_SIZE && GetLastError()!=NO_ERROR) |
| // TODO: find a better exception |
| ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotGetCurPos, manager); |
| |
| return (((XMLFilePos)high) << 32) | low; |
| } |
| |
| |
| XMLSize_t |
| WindowsFileMgr::fileRead(FileHandle f, XMLSize_t byteCount, XMLByte* buffer, MemoryManager* const manager) |
| { |
| if (!f || !buffer) |
| ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::CPtr_PointerIsZero, manager); |
| |
| DWORD bytesRead = 0; |
| if (!::ReadFile(f, buffer, (DWORD)byteCount, &bytesRead, 0)) |
| { |
| // |
| // Check specially for a broken pipe error. If we get this, it just |
| // means no more data from the pipe, so return zero. |
| // |
| if (::GetLastError() != ERROR_BROKEN_PIPE) |
| ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotReadFromFile, manager); |
| } |
| return (unsigned int)bytesRead; |
| } |
| |
| |
| void |
| WindowsFileMgr::fileWrite(FileHandle f, XMLSize_t byteCount, const XMLByte* buffer, MemoryManager* const manager) |
| { |
| if (!f || !buffer) |
| ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::CPtr_PointerIsZero, manager); |
| |
| const XMLByte* tmpFlush = buffer; |
| |
| while (byteCount > 0) |
| { |
| DWORD bytesWritten = 0; |
| if (!::WriteFile(f, tmpFlush, (DWORD)byteCount, &bytesWritten, 0)) |
| ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotWriteToFile, manager); |
| |
| tmpFlush+=bytesWritten; |
| byteCount-=bytesWritten; |
| } |
| } |
| |
| |
| XMLCh* |
| WindowsFileMgr::getFullPath(const XMLCh* const srcPath, MemoryManager* const manager) |
| { |
| // |
| // If we are on NT, then use wide character APIs, else use ASCII APIs. |
| // We have to do it manually since we are only built in ASCII mode from |
| // the standpoint of the APIs. |
| // |
| if (_onNT) |
| { |
| // Use a local buffer that is big enough for the largest legal path |
| const unsigned int bufSize = 1024; |
| XMLCh tmpPath[bufSize + 1]; |
| |
| XMLCh* namePart = 0; |
| if (!::GetFullPathNameW((LPCWSTR)srcPath, bufSize, (LPWSTR)tmpPath, (LPWSTR*)&namePart)) |
| return 0; |
| |
| // Return a copy of the path |
| return XMLString::replicate(tmpPath, manager); |
| } |
| else |
| { |
| // Transcode the incoming string |
| char* tmpSrcPath = XMLString::transcode(srcPath, manager); |
| ArrayJanitor<char> janSrcPath(tmpSrcPath, manager); |
| |
| // Use a local buffer that is big enough for the largest legal path |
| const unsigned int bufSize = 511; |
| char tmpPath[511 + 1]; |
| |
| char* namePart = 0; |
| if (!::GetFullPathNameA(tmpSrcPath, bufSize, tmpPath, &namePart)) |
| return 0; |
| |
| // Return a transcoded copy of the path |
| return XMLString::transcode(tmpPath, manager); |
| } |
| } |
| |
| |
| XMLCh* |
| WindowsFileMgr::getCurrentDirectory(MemoryManager* const manager) |
| { |
| // |
| // If we are on NT, then use wide character APIs, else use ASCII APIs. |
| // We have to do it manually since we are only built in ASCII mode from |
| // the standpoint of the APIs. |
| // |
| if (_onNT) |
| { |
| // Use a local buffer that is big enough for the largest legal path |
| const unsigned int bufSize = 1024; |
| XMLCh tmpPath[bufSize + 1]; |
| |
| if (!::GetCurrentDirectoryW(bufSize, (LPWSTR)tmpPath)) |
| return 0; |
| |
| // Return a copy of the path |
| return XMLString::replicate(tmpPath, manager); |
| } |
| else |
| { |
| // Use a local buffer that is big enough for the largest legal path |
| const unsigned int bufSize = 511; |
| char tmpPath[511 + 1]; |
| |
| if (!::GetCurrentDirectoryA(bufSize, tmpPath)) |
| return 0; |
| |
| // Return a transcoded copy of the path |
| return XMLString::transcode(tmpPath, manager); |
| } |
| } |
| |
| |
| bool |
| WindowsFileMgr::isRelative(const XMLCh* const toCheck, MemoryManager* const /*manager*/) |
| { |
| // Check for pathological case of empty path |
| if (!toCheck || !toCheck[0]) |
| return false; |
| |
| // |
| // If its starts with a drive, then it cannot be relative. Note that |
| // we checked the drive not being empty above, so worst case its one |
| // char long and the check of the 1st char will fail because its really |
| // a null character. |
| // |
| if (toCheck[1] == chColon) |
| { |
| if (((toCheck[0] >= chLatin_A) && (toCheck[0] <= chLatin_Z)) |
| || ((toCheck[0] >= chLatin_a) && (toCheck[0] <= chLatin_z))) |
| { |
| return false; |
| } |
| } |
| |
| // |
| // If it starts with a double slash, then it cannot be relative since |
| // it's a remote file. |
| // |
| if (isBackSlash(toCheck[0])) |
| return false; |
| |
| // Else assume its a relative path |
| return true; |
| } |
| |
| |
| XERCES_CPP_NAMESPACE_END |
| |