Aegisub/aegisub/libaegisub/unix/util.cpp

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// Copyright (c) 2010, Amar Takhar <verm@aegisub.org>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
/// @file util.cpp
/// @brief Unix utility methods.
/// @ingroup libaegisub unix
#include "config.h"
#include "libaegisub/util.h"
#include "libaegisub/access.h"
#include <stdarg.h>
#include <stdio.h>
#include <sys/statvfs.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else
#include <time.h>
#endif
#include <string>
#include <fstream>
#include <string.h>
namespace agi {
namespace util {
const std::string DirName(const std::string& path) {
if (path.find('/') == std::string::npos) {
return ".";
}
return path.substr(0, path.rfind("/")+1);
}
void Rename(const std::string& from, const std::string& to) {
acs::CheckFileWrite(from);
try {
acs::CheckFileWrite(to);
} catch (FileNotFoundError const&) {
acs::CheckDirWrite(DirName(to));
}
rename(from.c_str(), to.c_str());
}
void time_log(timeval &tv) {
gettimeofday(&tv, (struct timezone *)NULL);
}
uint64_t freespace(std::string const& path, PathType type) {
struct statvfs fs;
std::string check(path);
if (type == TypeFile)
check.assign(DirName(path));
acs::CheckDirRead(check);
if ((statvfs(check.c_str(), &fs)) == 0) {
return (uint64_t)fs.f_bsize * fs.f_bavail;
} else {
/// @todo We need a collective set of exceptions for ENOTDIR, EIO etc.
throw("Failed getting free space");
}
}
} // namespace io
} // namespace agi