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37 * Implements gmx::CommandLineProgramContext.
39 * \author Teemu Murtola <teemu.murtola@gmail.com>
40 * \ingroup module_commandline
44 #include "cmdlineprogramcontext.h"
54 #include <boost/scoped_ptr.hpp>
56 #include "thread_mpi/mutex.h"
58 #include "buildinfo.h"
59 #include "gromacs/utility/exceptions.h"
60 #include "gromacs/utility/file.h"
61 #include "gromacs/utility/gmxassert.h"
62 #include "gromacs/utility/path.h"
63 #include "gromacs/utility/stringutil.h"
71 //! \addtogroup module_commandline
75 * Quotes a string if it contains spaces.
77 std::string quoteIfNecessary(const char *str)
79 const bool bSpaces = (std::strchr(str, ' ') != NULL);
82 return formatString("'%s'", str);
88 * Default implementation for ExecutableEnvironmentInterface.
90 * Used if ExecutableEnvironmentInterface is not explicitly provided when
91 * constructing CommandLineProgramContext.
93 class DefaultExecutableEnvironment : public ExecutableEnvironmentInterface
96 //! Allocates a default environment.
97 static ExecutableEnvironmentPointer create()
99 return ExecutableEnvironmentPointer(new DefaultExecutableEnvironment());
102 DefaultExecutableEnvironment()
103 : initialWorkingDirectory_(Path::getWorkingDirectory())
107 virtual std::string getWorkingDirectory() const
109 return initialWorkingDirectory_;
111 virtual std::vector<std::string> getExecutablePaths() const
113 return Path::getExecutablePaths();
117 std::string initialWorkingDirectory_;
121 * Finds the absolute path of the binary from \c argv[0].
123 * \param[in] invokedName \c argv[0] the binary was invoked with.
124 * \param[in] env Executable environment.
125 * \returns The full path of the binary.
127 * If a binary with the given name cannot be located, \p invokedName is
130 std::string findFullBinaryPath(const std::string &invokedName,
131 const ExecutableEnvironmentInterface &env)
133 std::string searchName = invokedName;
134 // On Windows & Cygwin we need to add the .exe extension,
135 // or we wont be able to detect that the file exists.
136 #if (defined GMX_NATIVE_WINDOWS || defined GMX_CYGWIN)
137 if (!endsWith(searchName, ".exe"))
139 searchName.append(".exe");
142 if (!Path::containsDirectory(searchName))
144 // No directory in name means it must be in the path - search it!
145 std::vector<std::string> pathEntries = env.getExecutablePaths();
146 std::vector<std::string>::const_iterator i;
147 for (i = pathEntries.begin(); i != pathEntries.end(); ++i)
149 const std::string &dir = i->empty() ? env.getWorkingDirectory() : *i;
150 std::string testPath = Path::join(dir, searchName);
151 if (File::exists(testPath))
157 else if (!Path::isAbsolute(searchName))
159 // Name contains directories, but is not absolute, i.e.,
160 // it is relative to the current directory.
161 std::string cwd = env.getWorkingDirectory();
162 std::string testPath = Path::join(cwd, searchName);
169 * Returns whether given path contains files from `share/top/`.
171 * Only checks for a single file that has an uncommon enough name.
173 bool isAcceptableLibraryPath(const std::string &path)
175 return Path::exists(Path::join(path, "gurgle.dat"));
179 * Returns whether given path prefix contains files from `share/top/`.
181 * \param[in] path Path prefix to check.
182 * \returns `true` if \p path contains the data files.
184 * Checks whether \p path could be the installation prefix where `share/top/`
185 * files have been installed: appends the relative installation path of the
186 * data files and calls isAcceptableLibraryPath().
188 bool isAcceptableLibraryPathPrefix(const std::string &path)
190 std::string testPath = Path::join(path, DATA_INSTALL_DIR, "top");
191 if (isAcceptableLibraryPath(testPath))
199 * Returns a fallback installation prefix 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 findFallbackInstallationPrefixPath()
207 #ifndef GMX_NATIVE_WINDOWS
208 if (!isAcceptableLibraryPathPrefix(CMAKE_INSTALL_PREFIX))
210 if (isAcceptableLibraryPathPrefix("/usr/local"))
214 if (isAcceptableLibraryPathPrefix("/usr"))
218 if (isAcceptableLibraryPathPrefix("/opt"))
224 return CMAKE_INSTALL_PREFIX;
228 * Finds the library data files based on path of the binary.
230 * \param[in] binaryPath Absolute path to the binary.
231 * \param[out] bSourceLayout Set to `true` if the binary is run from
232 * the build tree and the original source directory can be found.
233 * \returns Path to the `share/top/` data files.
235 * The search based on the path only works if the binary is in the same
236 * relative path as the installed \Gromacs binaries. If the binary is
237 * somewhere else, a hard-coded fallback is used. This doesn't work if the
238 * binaries are somewhere else than the path given during configure time...
240 * Extra logic is present to allow running binaries from the build tree such
241 * that they use up-to-date data files from the source tree.
243 std::string findInstallationPrefixPath(const std::string &binaryPath,
246 *bSourceLayout = false;
247 // Don't search anything if binary cannot be found.
248 if (Path::exists(binaryPath))
250 // Remove the executable name.
251 std::string searchPath = Path::getParentPath(binaryPath);
252 // If running directly from the build tree, try to use the source
254 #if (defined CMAKE_SOURCE_DIR && defined CMAKE_BINARY_DIR)
255 std::string buildBinPath;
257 buildBinPath = Path::join(CMAKE_BINARY_DIR, "bin", CMAKE_INTDIR);
259 buildBinPath = Path::join(CMAKE_BINARY_DIR, "bin");
261 if (Path::isEquivalent(searchPath, buildBinPath))
263 std::string testPath = Path::join(CMAKE_SOURCE_DIR, "share/top");
264 if (isAcceptableLibraryPath(testPath))
266 *bSourceLayout = true;
267 return CMAKE_SOURCE_DIR;
272 // Use the executable path to (try to) find the library dir.
273 // TODO: Consider only going up exactly the required number of levels.
274 while (!searchPath.empty())
276 if (isAcceptableLibraryPathPrefix(searchPath))
280 searchPath = Path::getParentPath(searchPath);
284 // End of smart searching. If we didn't find it in our parent tree,
285 // or if the program name wasn't set, return a fallback.
286 return findFallbackInstallationPrefixPath();
293 /********************************************************************
294 * CommandLineProgramContext::Impl
297 class CommandLineProgramContext::Impl
301 Impl(int argc, const char *const argv[],
302 ExecutableEnvironmentPointer env);
305 * Finds the full binary path if it isn't searched yet.
307 * Sets \a fullBinaryPath_ if it isn't set yet.
309 * The \a binaryPathMutex_ should be locked by the caller before
310 * calling this function.
312 void findBinaryPath() const;
314 ExecutableEnvironmentPointer executableEnv_;
315 std::string invokedName_;
316 std::string programName_;
317 std::string displayName_;
318 std::string commandLine_;
319 mutable std::string fullBinaryPath_;
320 mutable std::string installationPrefix_;
321 mutable bool bSourceLayout_;
322 mutable tMPI::mutex binaryPathMutex_;
325 CommandLineProgramContext::Impl::Impl()
326 : programName_("GROMACS"), bSourceLayout_(false)
330 CommandLineProgramContext::Impl::Impl(int argc, const char *const argv[],
331 ExecutableEnvironmentPointer env)
332 : executableEnv_(env), bSourceLayout_(false)
334 invokedName_ = (argc != 0 ? argv[0] : "");
335 programName_ = Path::getFilename(invokedName_);
336 programName_ = stripSuffixIfPresent(programName_, ".exe");
338 commandLine_ = quoteIfNecessary(programName_.c_str());
339 for (int i = 1; i < argc; ++i)
341 commandLine_.append(" ");
342 commandLine_.append(quoteIfNecessary(argv[i]));
346 void CommandLineProgramContext::Impl::findBinaryPath() const
348 if (fullBinaryPath_.empty())
350 fullBinaryPath_ = findFullBinaryPath(invokedName_, *executableEnv_);
351 fullBinaryPath_ = Path::normalize(Path::resolveSymlinks(fullBinaryPath_));
352 // TODO: Investigate/Consider using a dladdr()-based solution.
353 // Potentially less portable, but significantly simpler, and also works
354 // with user binaries even if they are located in some arbitrary location,
355 // as long as shared libraries are used.
359 /********************************************************************
360 * CommandLineProgramContext
363 CommandLineProgramContext::CommandLineProgramContext()
368 CommandLineProgramContext::CommandLineProgramContext(const char *binaryName)
369 : impl_(new Impl(1, &binaryName, DefaultExecutableEnvironment::create()))
373 CommandLineProgramContext::CommandLineProgramContext(
374 int argc, const char *const argv[])
375 : impl_(new Impl(argc, argv, DefaultExecutableEnvironment::create()))
379 CommandLineProgramContext::CommandLineProgramContext(
380 int argc, const char *const argv[], ExecutableEnvironmentPointer env)
381 : impl_(new Impl(argc, argv, env))
385 CommandLineProgramContext::~CommandLineProgramContext()
389 void CommandLineProgramContext::setDisplayName(const std::string &name)
391 GMX_RELEASE_ASSERT(impl_->displayName_.empty(),
392 "Can only set display name once");
393 impl_->displayName_ = name;
396 const char *CommandLineProgramContext::programName() const
398 return impl_->programName_.c_str();
401 const char *CommandLineProgramContext::displayName() const
403 return impl_->displayName_.empty()
404 ? impl_->programName_.c_str()
405 : impl_->displayName_.c_str();
408 const char *CommandLineProgramContext::commandLine() const
410 return impl_->commandLine_.c_str();
413 const char *CommandLineProgramContext::fullBinaryPath() const
415 tMPI::lock_guard<tMPI::mutex> lock(impl_->binaryPathMutex_);
416 impl_->findBinaryPath();
417 return impl_->fullBinaryPath_.c_str();
420 InstallationPrefixInfo CommandLineProgramContext::installationPrefix() const
422 tMPI::lock_guard<tMPI::mutex> lock(impl_->binaryPathMutex_);
423 if (impl_->installationPrefix_.empty())
425 impl_->findBinaryPath();
426 impl_->installationPrefix_ =
427 Path::normalize(findInstallationPrefixPath(impl_->fullBinaryPath_,
428 &impl_->bSourceLayout_));
430 return InstallationPrefixInfo(
431 impl_->installationPrefix_.c_str(),
432 impl_->bSourceLayout_);