2 * This file is part of the GROMACS molecular simulation package.
4 * Copyright (c) 2012,2013,2014, by the GROMACS development team, led by
5 * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
6 * and including many others, as listed in the AUTHORS file in the
7 * top-level source directory and at http://www.gromacs.org.
9 * GROMACS is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public License
11 * as published by the Free Software Foundation; either version 2.1
12 * of the License, or (at your option) any later version.
14 * GROMACS is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with GROMACS; if not, see
21 * http://www.gnu.org/licenses, or write to the Free Software Foundation,
22 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 * If you want to redistribute modifications to GROMACS, please
25 * consider that scientific software is very special. Version
26 * control is crucial - bugs must be traceable. We will be happy to
27 * consider code for inclusion in the official distribution, but
28 * derived work must not be called official GROMACS. Details are found
29 * in the README & COPYING files - if they are missing, get the
30 * official version at http://www.gromacs.org.
32 * To help us fund GROMACS development, we humbly ask that you cite
33 * the research papers on the package. Check out http://www.gromacs.org.
37 * Implements gmx::CommandLineProgramContext.
39 * \author Teemu Murtola <teemu.murtola@gmail.com>
40 * \ingroup module_commandline
42 #include "cmdlineprogramcontext.h"
52 #include <boost/scoped_ptr.hpp>
54 #include "thread_mpi/mutex.h"
56 #include "gromacs/utility/exceptions.h"
57 #include "gromacs/utility/file.h"
58 #include "gromacs/utility/gmxassert.h"
59 #include "gromacs/utility/path.h"
60 #include "gromacs/utility/stringutil.h"
68 //! \addtogroup module_commandline
72 * Quotes a string if it contains spaces.
74 std::string quoteIfNecessary(const char *str)
76 const bool bSpaces = (std::strchr(str, ' ') != NULL);
79 return formatString("'%s'", str);
85 * Default implementation for ExecutableEnvironmentInterface.
87 * Used if ExecutableEnvironmentInterface is not explicitly provided when
88 * constructing CommandLineProgramContext.
90 class DefaultExecutableEnvironment : public ExecutableEnvironmentInterface
93 //! Allocates a default environment.
94 static ExecutableEnvironmentPointer create()
96 return ExecutableEnvironmentPointer(new DefaultExecutableEnvironment());
99 DefaultExecutableEnvironment()
100 : initialWorkingDirectory_(Path::getWorkingDirectory())
104 virtual std::string getWorkingDirectory() const
106 return initialWorkingDirectory_;
108 virtual std::vector<std::string> getExecutablePaths() const
110 return Path::getExecutablePaths();
114 std::string initialWorkingDirectory_;
118 * Finds the absolute path of the binary from \c argv[0].
120 * \param[in] invokedName \c argv[0] the binary was invoked with.
121 * \param[in] env Executable environment.
122 * \returns The full path of the binary.
124 * If a binary with the given name cannot be located, \p invokedName is
127 std::string findFullBinaryPath(const std::string &invokedName,
128 const ExecutableEnvironmentInterface &env)
130 std::string searchName = invokedName;
131 // On Windows & Cygwin we need to add the .exe extension,
132 // or we wont be able to detect that the file exists.
133 #if (defined GMX_NATIVE_WINDOWS || defined GMX_CYGWIN)
134 if (!endsWith(searchName, ".exe"))
136 searchName.append(".exe");
139 if (!Path::containsDirectory(searchName))
141 // No directory in name means it must be in the path - search it!
142 std::vector<std::string> pathEntries = env.getExecutablePaths();
143 std::vector<std::string>::const_iterator i;
144 for (i = pathEntries.begin(); i != pathEntries.end(); ++i)
146 const std::string &dir = i->empty() ? env.getWorkingDirectory() : *i;
147 std::string testPath = Path::join(dir, searchName);
148 if (File::exists(testPath))
154 else if (!Path::isAbsolute(searchName))
156 // Name contains directories, but is not absolute, i.e.,
157 // it is relative to the current directory.
158 std::string cwd = env.getWorkingDirectory();
159 std::string testPath = Path::join(cwd, searchName);
166 * Returns whether given path contains files from `share/top/`.
168 * Only checks for a single file that has an uncommon enough name.
170 bool isAcceptableLibraryPath(const std::string &path)
172 return Path::exists(Path::join(path, "gurgle.dat"));
176 * Returns whether given path prefix contains files from `share/top/`.
178 * \param[in] path Path prefix to check.
179 * \param[out] result If return value is `true`, the pointee is set to the
180 * actual data directory. Otherwise, the pointee is not modified.
181 * \returns `true` if \p path contains the data files.
183 * Checks whether \p path could be the installation prefix where `share/top/`
184 * files have been installed: appends the relative installation path of the
185 * data files and calls isAcceptableLibraryPath().
187 bool isAcceptableLibraryPathPrefix(const std::string &path, std::string *result)
189 std::string testPath = Path::join(path, GMXLIB_SEARCH_DIR);
190 if (isAcceptableLibraryPath(testPath))
199 * Returns a fallback data path.
201 * Checks a few standard locations for the data files before returning a
202 * configure-time hard-coded path. The hard-coded path is preferred if it
203 * actually contains the data files, though.
205 std::string findFallbackLibraryDataPath()
207 #ifndef GMX_NATIVE_WINDOWS
208 if (!isAcceptableLibraryPath(GMXLIB_FALLBACK))
210 std::string foundPath;
211 if (isAcceptableLibraryPathPrefix("/usr/local", &foundPath))
215 if (isAcceptableLibraryPathPrefix("/usr", &foundPath))
219 if (isAcceptableLibraryPathPrefix("/opt", &foundPath))
225 return GMXLIB_FALLBACK;
229 * Finds the library data files based on path of the binary.
231 * \param[in] binaryPath Absolute path to the binary.
232 * \returns Path to the `share/top/` data files.
234 * The search based on the path only works if the binary is in the same
235 * relative path as the installed \Gromacs binaries. If the binary is
236 * somewhere else, a hard-coded fallback is used. This doesn't work if the
237 * binaries are somewhere else than the path given during configure time...
239 * Extra logic is present to allow running binaries from the build tree such
240 * that they use up-to-date data files from the source tree.
242 std::string findDefaultLibraryDataPath(const std::string &binaryPath)
244 // If the input path is not absolute, the binary could not be found.
245 // Don't search anything.
246 if (Path::isAbsolute(binaryPath))
248 // Remove the executable name.
249 std::string searchPath = Path::getParentPath(binaryPath);
250 // If running directly from the build tree, try to use the source
252 #if (defined CMAKE_SOURCE_DIR && defined CMAKE_BINARY_DIR)
253 if (Path::startsWith(searchPath, CMAKE_BINARY_DIR))
255 std::string testPath = Path::join(CMAKE_SOURCE_DIR, "share/top");
256 if (isAcceptableLibraryPath(testPath))
263 // Use the executable path to (try to) find the library dir.
264 while (!searchPath.empty())
266 std::string testPath = Path::join(searchPath, GMXLIB_SEARCH_DIR);
267 if (isAcceptableLibraryPath(testPath))
271 searchPath = Path::getParentPath(searchPath);
275 // End of smart searching. If we didn't find it in our parent tree,
276 // or if the program name wasn't set, return a fallback.
277 return findFallbackLibraryDataPath();
284 /********************************************************************
285 * CommandLineProgramContext::Impl
288 class CommandLineProgramContext::Impl
292 Impl(int argc, const char *const argv[],
293 ExecutableEnvironmentPointer env);
296 * Finds the full binary path if it isn't searched yet.
298 * Sets \a fullBinaryPath_ if it isn't set yet.
300 * The \a binaryPathMutex_ should be locked by the caller before
301 * calling this function.
303 void findBinaryPath() const;
305 ExecutableEnvironmentPointer executableEnv_;
306 std::string invokedName_;
307 std::string programName_;
308 std::string displayName_;
309 std::string commandLine_;
310 mutable std::string fullBinaryPath_;
311 mutable std::string defaultLibraryDataPath_;
312 mutable tMPI::mutex binaryPathMutex_;
315 CommandLineProgramContext::Impl::Impl()
316 : programName_("GROMACS")
320 CommandLineProgramContext::Impl::Impl(int argc, const char *const argv[],
321 ExecutableEnvironmentPointer env)
322 : executableEnv_(env)
324 invokedName_ = (argc != 0 ? argv[0] : "");
325 programName_ = Path::getFilename(invokedName_);
326 programName_ = stripSuffixIfPresent(programName_, ".exe");
328 commandLine_ = quoteIfNecessary(programName_.c_str());
329 for (int i = 1; i < argc; ++i)
331 commandLine_.append(" ");
332 commandLine_.append(quoteIfNecessary(argv[i]));
336 void CommandLineProgramContext::Impl::findBinaryPath() const
338 if (fullBinaryPath_.empty())
340 fullBinaryPath_ = findFullBinaryPath(invokedName_, *executableEnv_);
341 fullBinaryPath_ = Path::normalize(Path::resolveSymlinks(fullBinaryPath_));
342 // TODO: Investigate/Consider using a dladdr()-based solution.
343 // Potentially less portable, but significantly simpler, and also works
344 // with user binaries even if they are located in some arbitrary location,
345 // as long as shared libraries are used.
349 /********************************************************************
350 * CommandLineProgramContext
353 CommandLineProgramContext::CommandLineProgramContext()
358 CommandLineProgramContext::CommandLineProgramContext(const char *binaryName)
359 : impl_(new Impl(1, &binaryName, DefaultExecutableEnvironment::create()))
363 CommandLineProgramContext::CommandLineProgramContext(
364 int argc, const char *const argv[])
365 : impl_(new Impl(argc, argv, DefaultExecutableEnvironment::create()))
369 CommandLineProgramContext::CommandLineProgramContext(
370 int argc, const char *const argv[], ExecutableEnvironmentPointer env)
371 : impl_(new Impl(argc, argv, env))
375 CommandLineProgramContext::~CommandLineProgramContext()
379 void CommandLineProgramContext::setDisplayName(const std::string &name)
381 GMX_RELEASE_ASSERT(impl_->displayName_.empty(),
382 "Can only set display name once");
383 impl_->displayName_ = name;
386 const char *CommandLineProgramContext::programName() const
388 return impl_->programName_.c_str();
391 const char *CommandLineProgramContext::displayName() const
393 return impl_->displayName_.empty()
394 ? impl_->programName_.c_str()
395 : impl_->displayName_.c_str();
398 const char *CommandLineProgramContext::commandLine() const
400 return impl_->commandLine_.c_str();
403 const char *CommandLineProgramContext::fullBinaryPath() const
405 tMPI::lock_guard<tMPI::mutex> lock(impl_->binaryPathMutex_);
406 impl_->findBinaryPath();
407 return impl_->fullBinaryPath_.c_str();
410 const char *CommandLineProgramContext::defaultLibraryDataPath() const
412 tMPI::lock_guard<tMPI::mutex> lock(impl_->binaryPathMutex_);
413 if (impl_->defaultLibraryDataPath_.empty())
415 impl_->findBinaryPath();
416 impl_->defaultLibraryDataPath_ =
417 Path::normalize(findDefaultLibraryDataPath(impl_->fullBinaryPath_));
419 return impl_->defaultLibraryDataPath_.c_str();