194 lines
4.9 KiB
C++
194 lines
4.9 KiB
C++
/*
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* Copyright (C) 2006-2016 Jacek Sieka, arnetheduck on gmail point com
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef ADCHPP_FILE_H
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#define ADCHPP_FILE_H
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#include "Exception.h"
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#include "Util.h"
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#ifndef _WIN32
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#endif
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namespace adchpp {
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STANDARD_EXCEPTION(FileException);
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class File
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{
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public:
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enum {
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READ = 0x01,
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WRITE = 0x02
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};
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enum {
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OPEN = 0x01,
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CREATE = 0x02,
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TRUNCATE = 0x04
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};
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ADCHPP_DLL File(const std::string& aFileName, int access, int mode = OPEN) throw(FileException);
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ADCHPP_DLL int64_t getSize();
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ADCHPP_DLL static int64_t getSize(const std::string& aFileName);
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ADCHPP_DLL std::string read(uint32_t len) throw(FileException);
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/** Returns the directory part of the full path */
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ADCHPP_DLL static std::string getFilePath(const std::string& name) throw();
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/** Returns the filename part of the full path */
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ADCHPP_DLL static std::string getFileName(const std::string& name) throw();
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ADCHPP_DLL static bool isAbsolutePath(const std::string& name) throw();
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ADCHPP_DLL static std::string makeAbsolutePath(const std::string& filename);
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ADCHPP_DLL static std::string makeAbsolutePath(const std::string& path, const std::string& filename);
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ADCHPP_DLL static void ensureDirectory(const std::string& aFile) throw();
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#ifdef _WIN32
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void close() {
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if(h != INVALID_HANDLE_VALUE) {
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CloseHandle(h);
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h = INVALID_HANDLE_VALUE;
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}
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}
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int64_t getPos() {
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LONG x = 0;
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DWORD l = ::SetFilePointer(h, 0, &x, FILE_CURRENT);
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return (int64_t)l | ((int64_t)x)<<32;
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}
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void setPos(int64_t pos) {
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LONG x = (LONG) (pos>>32);
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::SetFilePointer(h, (DWORD)(pos & 0xffffffff), &x, FILE_BEGIN);
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}
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void setEndPos(int64_t pos) {
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LONG x = (LONG) (pos>>32);
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::SetFilePointer(h, (DWORD)(pos & 0xffffffff), &x, FILE_END);
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}
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void movePos(int64_t pos) {
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LONG x = (LONG) (pos>>32);
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::SetFilePointer(h, (DWORD)(pos & 0xffffffff), &x, FILE_CURRENT);
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}
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uint32_t read(void* buf, uint32_t len) throw(FileException) {
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DWORD x;
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if(!::ReadFile(h, buf, len, &x, NULL)) {
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throw(FileException(Util::translateError(GetLastError())));
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}
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return x;
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}
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void write(const void* buf, size_t len) throw(FileException) {
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DWORD x;
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if(!::WriteFile(h, buf, (DWORD)len, &x, NULL)) {
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throw FileException(Util::translateError(GetLastError()));
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}
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if(x < len) {
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throw FileException("Unable to write, disk full?");
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}
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}
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void setEOF() throw(FileException) {
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dcassert(h != NULL);
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if(!SetEndOfFile(h)) {
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throw FileException(Util::translateError(GetLastError()));
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}
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}
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static void deleteFile(const std::string& aFileName) { ::DeleteFile(aFileName.c_str()); };
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static void renameFile(const std::string& source, const std::string& target) { ::MoveFile(source.c_str(), target.c_str()); };
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#else // WIN32
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void close() {
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if(h != -1) {
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::close(h);
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h = -1;
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}
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}
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int64_t getPos() { return (int64_t) lseek(h, 0, SEEK_CUR); }
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void setPos(int64_t pos) { lseek(h, (off_t)pos, SEEK_SET); };
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void setEndPos(int64_t pos) { lseek(h, (off_t)pos, SEEK_END); };
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void movePos(int64_t pos) { lseek(h, (off_t)pos, SEEK_CUR); };
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uint32_t read(void* buf, uint32_t len) throw(FileException) {
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ssize_t x = ::read(h, buf, (size_t)len);
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if(x == -1)
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throw FileException(Util::translateError(errno));
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return (uint32_t)x;
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}
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void write(const void* buf, uint32_t len) throw(FileException) {
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ssize_t x;
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x = ::write(h, buf, len);
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if(x == -1)
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throw FileException(Util::translateError(errno));
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if(x < (ssize_t)len)
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throw FileException("Unable to write, disk full?");
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}
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/**
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* @todo fix for unix...
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*/
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void setEOF() throw(FileException) {
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}
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static void deleteFile(const std::string& aFileName) { ::unlink(aFileName.c_str()); };
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static void renameFile(const std::string& source, const std::string& target) { ::rename(source.c_str(), target.c_str()); };
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#endif // WIN32
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~File() {
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close();
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}
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std::string read() throw(FileException) {
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setPos(0);
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return read((uint32_t)getSize());
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}
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void write(const std::string& aString) throw(FileException) {
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write((void*)aString.data(), aString.size());
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}
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private:
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File(const File&);
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File& operator=(const File&);
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#ifdef _WIN32
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HANDLE h;
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#else
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int h;
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#endif
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};
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}
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#endif // FILE_H
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