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// $Id$ |
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/* |
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Copyright (C) 2004 Jari Häkkinen |
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Copyright (C) 2005 Peter Johansson |
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Copyright (C) 2006 Jari Häkkinen |
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Copyright (C) 2007 Peter Johansson |
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Copyright (C) 2008 Jari Häkkinen, Peter Johansson |
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Copyright (C) 2009, 2010, 2017 Peter Johansson |
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This file is part of the yat library, http://dev.thep.lu.se/yat |
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The yat library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License as |
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published by the Free Software Foundation; either version 3 of the |
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License, or (at your option) any later version. |
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|
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The yat library 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 GNU |
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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 yat. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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#include <config.h> |
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#include "FileUtil.h" |
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#include "Exception.h" |
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#include "utility.h" |
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|
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#include <cerrno> |
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#include <cstddef> |
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#include <cstring> |
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#include <iostream> |
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#include <stdexcept> |
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#include <sstream> |
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#include <string> |
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|
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#include <sys/stat.h> |
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#include <unistd.h> |
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|
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|
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namespace theplu { |
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namespace yat { |
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namespace utility { |
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|
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|
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FileUtil::FileUtil(const std::string& path) |
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: path_(path) |
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{ |
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} |
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|
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|
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FileUtil::FileUtil(const FileUtil& other) |
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: path_(other.path_) |
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{ |
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} |
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|
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|
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int FileUtil::permissions(const std::string& bits) const |
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{ |
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std::string tryme=path_; |
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if (!exists()) { |
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tryme = dirname(path_); |
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} |
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|
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int mode=0; |
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bool ok = true; |
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for (size_t i=0; i<bits.length(); i++) |
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switch (bits[i]) { |
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case 'r': |
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mode|=R_OK; |
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break; |
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case 'w': |
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mode|=W_OK; |
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break; |
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case 'x': |
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mode|=X_OK; |
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break; |
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case 'd': |
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struct stat nodestat; |
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stat(tryme.c_str(),&nodestat); |
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if (!S_ISDIR(nodestat.st_mode)) |
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ok = false; |
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break; |
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default: |
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throw std::invalid_argument("FileUtil::permission: "+bits); |
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} |
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if (!ok) |
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return -1; |
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return access(tryme.c_str(),mode); |
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} |
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|
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|
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bool FileUtil::exists(void) const |
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{ |
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struct stat statt; |
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return exists_common(stat(path_.c_str(),&statt)); |
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} |
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|
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|
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bool FileUtil::exists_common(bool failed) const |
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{ |
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if ( failed && (errno!=ENOENT) ) { |
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std::stringstream ss; |
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ss << "stat(2) call failed with errno: " << errno << "\n" |
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<< strerror(errno); |
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throw IO_error(ss.str()); |
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} |
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return !failed; |
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} |
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|
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|
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bool FileUtil::lexists(void) const |
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{ |
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struct stat statt; |
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return exists_common(lstat(path_.c_str(),&statt)); |
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} |
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|
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|
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const std::string& FileUtil::path(void) const |
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{ |
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return path_; |
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} |
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|
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|
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FileUtil& FileUtil::operator=(const FileUtil& rhs) |
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{ |
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path_ = rhs.path_; |
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return *this; |
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} |
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|
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}}} // of namespace utility, yat, and theplu |