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https://git.lyx.org/repos/lyx.git
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807a279bc4
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@9564 a592a061-630c-0410-9148-cb99ea01b6c8
157 lines
3.8 KiB
C
157 lines
3.8 KiB
C
// -*- C++ -*-
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#include <config.h>
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#include "fs_extras.h"
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#include <boost/filesystem/config.hpp>
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#include <boost/filesystem/exception.hpp>
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#include <boost/detail/workaround.hpp>
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#include <boost/throw_exception.hpp>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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// BOOST_POSIX or BOOST_WINDOWS specify which API to use.
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# if !defined( BOOST_WINDOWS ) && !defined( BOOST_POSIX )
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# if defined(_WIN32) || defined(__WIN32__) || defined(WIN32) || defined(__CYGWIN__)
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# define BOOST_WINDOWS
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# else
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# define BOOST_POSIX
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# endif
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# endif
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#if defined (BOOST_WINDOWS)
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# define WIN32_LEAN_AND_MEAN
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# include <windows.h>
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#endif
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namespace fs = boost::filesystem;
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namespace boost {
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namespace filesystem {
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bool is_readable(path const & ph)
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{
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#ifdef BOOST_POSIX
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return ::access(ph.string().c_str(), R_OK) == 0;
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#endif
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#ifdef BOOST_WINDOWS
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DWORD const attr = ::GetFileAttributes(ph.string().c_str());
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return attr != INVALID_FILE_ATTRIBUTES &&
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(attr & FILE_ATTRIBUTE_DIRECTORY) != FILE_ATTRIBUTE_DIRECTORY;
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#endif
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}
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bool is_writable(path const & ph)
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{
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#ifdef BOOST_POSIX
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return ::access(ph.string().c_str(), W_OK) == 0;
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#endif
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#ifdef BOOST_WINDOWS
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DWORD const attr = ::GetFileAttributes(ph.string().c_str());
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if (attr != INVALID_FILE_ATTRIBUTES &&
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(attr & FILE_ATTRIBUTE_READONLY) != 0) {
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// Read-only - no write access
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return false;
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}
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return attr != INVALID_FILE_ATTRIBUTES &&
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(attr & FILE_ATTRIBUTE_DIRECTORY) != FILE_ATTRIBUTE_DIRECTORY;
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#endif
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}
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bool is_readonly(path const & ph)
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{
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#ifdef BOOST_POSIX
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return is_readable(ph) && !is_writable(ph);
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#endif
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#ifdef BOOST_WINDOWS
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DWORD const attr = ::GetFileAttributes(ph.string().c_str());
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return (attr != INVALID_FILE_ATTRIBUTES
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&& (attr & FILE_ATTRIBUTE_READONLY));
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#endif
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}
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void copy_file(path const & source, path const & target, bool noclobber)
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{
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#ifdef BOOST_POSIX
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int const infile = ::open(source.string().c_str(), O_RDONLY);
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if (infile == -1) {
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boost::throw_exception(
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filesystem_error(
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"boost::filesystem::copy_file",
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source, target,
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fs::detail::system_error_code()));
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}
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struct stat source_stat;
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int const ret = ::fstat(infile, &source_stat);
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if (ret == -1) {
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::close(infile);
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boost::throw_exception(
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filesystem_error(
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"boost::filesystem::copy_file",
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source, target,
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fs::detail::system_error_code()));
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}
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int const flags = O_WRONLY | O_CREAT | (noclobber ? O_EXCL : O_TRUNC);
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int const outfile = ::open(target.string().c_str(), flags, source_stat.st_mode);
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if (outfile == -1) {
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::close(infile);
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boost::throw_exception(
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filesystem_error(
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"boost::filesystem::copy_file",
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source, target,
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fs::detail::system_error_code()));
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}
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std::size_t const buf_sz = 32768;
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char buf[buf_sz];
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ssize_t in = -1;
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ssize_t out = -1;
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while (true) {
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in = ::read(infile, buf, buf_sz);
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if (in == -1) {
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break;
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} else if (in == 0) {
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break;
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} else {
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out = ::write(outfile, buf, in);
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if (out == -1) {
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break;
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}
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}
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}
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::close(infile);
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::close(outfile);
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if (in == -1 || out == -1)
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boost::throw_exception(
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filesystem_error(
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"boost::filesystem::copy_file",
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source, target,
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fs::detail::system_error_code()));
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#endif
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#ifdef BOOST_WINDOWS
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if (::CopyFile(source.string().c_str(), target.string().c_str(), !noclobber) == 0) {
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boost::throw_exception(
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filesystem_error(
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"boost::filesystem::copy_file",
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source, target,
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fs::detail::system_error_code()));
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}
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#endif
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}
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}
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}
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