Added Xerces-C++ 3.1.2
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sippeangelo
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/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* $Id: PosixFileMgr.cpp 1662881 2015-02-28 02:00:45Z scantor $
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*/
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#include <config.h>
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#include <stdio.h>
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#if HAVE_LIMITS_H
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#include <limits.h>
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#endif
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#include <xercesc/util/FileManagers/PosixFileMgr.hpp>
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#include <xercesc/util/PlatformUtils.hpp>
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#include <xercesc/util/Janitor.hpp>
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#include <xercesc/util/RuntimeException.hpp>
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#include <xercesc/util/PanicHandler.hpp>
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#include <xercesc/util/XMLString.hpp>
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XERCES_CPP_NAMESPACE_BEGIN
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PosixFileMgr::PosixFileMgr()
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{
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}
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PosixFileMgr::~PosixFileMgr()
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{
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}
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FileHandle
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PosixFileMgr::fileOpen(const XMLCh* path, bool toWrite, MemoryManager* const manager)
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{
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const char* tmpFileName = XMLString::transcode(path, manager);
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ArrayJanitor<char> janText((char*)tmpFileName, manager);
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return fileOpen(tmpFileName, toWrite, manager);
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}
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FileHandle
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PosixFileMgr::fileOpen(const char* path, bool toWrite, MemoryManager* const /*manager*/)
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{
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const char* perms = (toWrite) ? "wb" : "rb";
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FileHandle result = (FileHandle)fopen(path , perms);
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return result;
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}
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FileHandle
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PosixFileMgr::openStdIn(MemoryManager* const /*manager*/)
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{
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return (FileHandle)fdopen(dup(0), "rb");
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}
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void
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PosixFileMgr::fileClose(FileHandle f, MemoryManager* const manager)
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{
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if (!f)
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::CPtr_PointerIsZero, manager);
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if (fclose((FILE*)f))
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ThrowXMLwithMemMgr(XMLPlatformUtilsException,
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XMLExcepts::File_CouldNotCloseFile, manager);
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}
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void
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PosixFileMgr::fileReset(FileHandle f, MemoryManager* const manager)
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{
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if (!f)
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::CPtr_PointerIsZero, manager);
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// Seek to the start of the file
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if (fseek((FILE*)f, 0, SEEK_SET))
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ThrowXMLwithMemMgr(XMLPlatformUtilsException,
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XMLExcepts::File_CouldNotResetFile, manager);
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}
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XMLFilePos
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PosixFileMgr::curPos(FileHandle f, MemoryManager* const manager)
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{
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if (!f)
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::CPtr_PointerIsZero, manager);
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long curPos = ftell((FILE*)f);
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if (curPos == -1)
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotGetSize, manager);
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return (XMLFilePos)curPos;
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}
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XMLFilePos
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PosixFileMgr::fileSize(FileHandle f, MemoryManager* const manager)
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{
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if (!f)
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::CPtr_PointerIsZero, manager);
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// Get the current position
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long curPos = ftell((FILE*)f);
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if (curPos == -1)
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotGetCurPos, manager);
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// Seek to the end and save that value for return
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if (fseek((FILE*)f, 0, SEEK_END))
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotSeekToEnd, manager);
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long retVal = ftell((FILE*)f);
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if (retVal == -1)
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotSeekToEnd, manager);
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// And put the pointer back
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if (fseek((FILE*)f, curPos, SEEK_SET))
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotSeekToPos, manager);
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return (XMLFilePos)retVal;
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}
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XMLSize_t
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PosixFileMgr::fileRead(FileHandle f, XMLSize_t byteCount, XMLByte* buffer, MemoryManager* const manager)
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{
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if (!f || !buffer)
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::CPtr_PointerIsZero, manager);
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XMLSize_t bytesRead = 0;
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if (byteCount > 0)
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{
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bytesRead = fread((void*)buffer, 1, byteCount, (FILE*)f);
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if (ferror((FILE*)f))
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotReadFromFile, manager);
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}
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return bytesRead;
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}
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void
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PosixFileMgr::fileWrite(FileHandle f, XMLSize_t byteCount, const XMLByte* buffer, MemoryManager* const manager)
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{
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if (!f || !buffer)
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::CPtr_PointerIsZero, manager);
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while (byteCount > 0)
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{
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XMLSize_t bytesWritten = fwrite(buffer, sizeof(XMLByte), byteCount, (FILE*)f);
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if (ferror((FILE*)f))
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotWriteToFile, manager);
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buffer += bytesWritten;
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byteCount -= bytesWritten;
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}
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}
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XMLCh*
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PosixFileMgr::getFullPath(const XMLCh* const srcPath, MemoryManager* const manager)
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{
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//
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// NOTE: The path provided has always already been opened successfully,
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// so we know that its not some pathological freaky path. It comes in
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// in native format, and goes out as Unicode always
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//
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char* newSrc = XMLString::transcode(srcPath, manager);
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ArrayJanitor<char> janText(newSrc, manager);
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#if HAVE_PATH_MAX
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// Use a local buffer that is big enough for the largest legal path
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char absPath[PATH_MAX + 1];
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// get the absolute path
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if (!realpath(newSrc, absPath))
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotGetBasePathName, manager);
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XMLCh* ret = XMLString::transcode(absPath, manager);
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#else
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// get the absolute path
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char *absPath = realpath(newSrc, NULL);
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if(!absPath)
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ThrowXMLwithMemMgr(XMLPlatformUtilsException, XMLExcepts::File_CouldNotGetBasePathName, manager);
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XMLCh* ret = XMLString::transcode(absPath, manager);
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free(absPath);
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#endif
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return ret;
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}
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XMLCh*
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PosixFileMgr::getCurrentDirectory(MemoryManager* const manager)
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{
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#if HAVE_PATH_MAX
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char dirBuf[PATH_MAX + 2];
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char *curDir = getcwd(&dirBuf[0], PATH_MAX + 1);
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#else
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char *curDir = getcwd(NULL, 0);
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#endif
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if (!curDir)
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ThrowXMLwithMemMgr(XMLPlatformUtilsException,
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XMLExcepts::File_CouldNotGetBasePathName, manager);
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XMLCh* ret = XMLString::transcode(curDir, manager);
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#if !HAVE_PATH_MAX
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free(curDir);
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#endif
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return ret;
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}
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bool
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PosixFileMgr::isRelative(const XMLCh* const toCheck, MemoryManager* const /*manager*/)
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{
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// Check for pathological case of empty path
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if (!toCheck || !toCheck[0])
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return false;
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//
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// If it starts with a slash, then it cannot be relative.
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//
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return toCheck[0] != XMLCh('/');
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}
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XERCES_CPP_NAMESPACE_END
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