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37 * Implements gmx::CommandLineProgramContext.
39 * See \linktodevmanual{relocatable-binaries,developer guide section on
40 * relocatable binaries} for explanation of the searching logic.
42 * \author Teemu Murtola <teemu.murtola@gmail.com>
43 * \ingroup module_commandline
47 #include "cmdlineprogramcontext.h"
57 #include <boost/scoped_ptr.hpp>
59 #include "thread_mpi/mutex.h"
61 #include "buildinfo.h"
62 #include "gromacs/utility/exceptions.h"
63 #include "gromacs/utility/gmxassert.h"
64 #include "gromacs/utility/path.h"
65 #include "gromacs/utility/stringutil.h"
73 //! \addtogroup module_commandline
77 * Quotes a string if it contains spaces.
79 std::string quoteIfNecessary(const char *str)
81 const bool bSpaces = (std::strchr(str, ' ') != NULL);
84 return formatString("'%s'", str);
90 * Default implementation for ExecutableEnvironmentInterface.
92 * Used if ExecutableEnvironmentInterface is not explicitly provided when
93 * constructing CommandLineProgramContext.
95 class DefaultExecutableEnvironment : public ExecutableEnvironmentInterface
98 //! Allocates a default environment.
99 static ExecutableEnvironmentPointer create()
101 return ExecutableEnvironmentPointer(new DefaultExecutableEnvironment());
104 DefaultExecutableEnvironment()
105 : initialWorkingDirectory_(Path::getWorkingDirectory())
109 virtual std::string getWorkingDirectory() const
111 return initialWorkingDirectory_;
113 virtual std::vector<std::string> getExecutablePaths() const
115 return Path::getExecutablePaths();
119 std::string initialWorkingDirectory_;
123 * Finds the absolute path of the binary from \c argv[0].
125 * \param[in] invokedName \c argv[0] the binary was invoked with.
126 * \param[in] env Executable environment.
127 * \returns The full path of the binary.
129 * If a binary with the given name cannot be located, \p invokedName is
132 std::string findFullBinaryPath(const std::string &invokedName,
133 const ExecutableEnvironmentInterface &env)
135 std::string searchName = invokedName;
136 // On Windows & Cygwin we need to add the .exe extension,
137 // or we wont be able to detect that the file exists.
138 #if (defined GMX_NATIVE_WINDOWS || defined GMX_CYGWIN)
139 if (!endsWith(searchName, ".exe"))
141 searchName.append(".exe");
144 if (!Path::containsDirectory(searchName))
146 // No directory in name means it must be in the path - search it!
147 std::vector<std::string> pathEntries = env.getExecutablePaths();
148 std::vector<std::string>::const_iterator i;
149 for (i = pathEntries.begin(); i != pathEntries.end(); ++i)
151 const std::string &dir = i->empty() ? env.getWorkingDirectory() : *i;
152 std::string testPath = Path::join(dir, searchName);
153 if (File::exists(testPath))
159 else if (!Path::isAbsolute(searchName))
161 // Name contains directories, but is not absolute, i.e.,
162 // it is relative to the current directory.
163 std::string cwd = env.getWorkingDirectory();
164 std::string testPath = Path::join(cwd, searchName);
171 * Returns whether given path contains files from `share/top/`.
173 * Only checks for a single file that has an uncommon enough name.
175 bool isAcceptableLibraryPath(const std::string &path)
177 return Path::exists(Path::join(path, "gurgle.dat"));
181 * Returns whether given path prefix contains files from `share/top/`.
183 * \param[in] path Path prefix to check.
184 * \returns `true` if \p path contains the data files.
186 * Checks whether \p path could be the installation prefix where `share/top/`
187 * files have been installed: appends the relative installation path of the
188 * data files and calls isAcceptableLibraryPath().
190 bool isAcceptableLibraryPathPrefix(const std::string &path)
192 std::string testPath = Path::join(path, DATA_INSTALL_DIR, "top");
193 if (isAcceptableLibraryPath(testPath))
201 * Returns a fallback installation prefix path.
203 * Checks a few standard locations for the data files before returning a
204 * configure-time hard-coded path. The hard-coded path is preferred if it
205 * actually contains the data files, though.
207 std::string findFallbackInstallationPrefixPath()
209 #ifndef GMX_NATIVE_WINDOWS
210 if (!isAcceptableLibraryPathPrefix(CMAKE_INSTALL_PREFIX))
212 if (isAcceptableLibraryPathPrefix("/usr/local"))
216 if (isAcceptableLibraryPathPrefix("/usr"))
220 if (isAcceptableLibraryPathPrefix("/opt"))
226 return CMAKE_INSTALL_PREFIX;
230 * Generic function to find data files based on path of the binary.
232 * \param[in] binaryPath Absolute path to the binary.
233 * \param[out] bSourceLayout Set to `true` if the binary is run from
234 * the build tree and the original source directory can be found.
235 * \returns Path to the `share/top/` data files.
237 * The search based on the path only works if the binary is in the same
238 * relative path as the installed \Gromacs binaries. If the binary is
239 * somewhere else, a hard-coded fallback is used. This doesn't work if the
240 * binaries are somewhere else than the path given during configure time...
242 * Extra logic is present to allow running binaries from the build tree such
243 * that they use up-to-date data files from the source tree.
245 std::string findInstallationPrefixPath(const std::string &binaryPath,
248 *bSourceLayout = false;
249 // Don't search anything if binary cannot be found.
250 if (Path::exists(binaryPath))
252 // Remove the executable name.
253 std::string searchPath = Path::getParentPath(binaryPath);
254 // If running directly from the build tree, try to use the source
256 #if (defined CMAKE_SOURCE_DIR && defined CMAKE_BINARY_DIR)
257 std::string buildBinPath;
258 #ifdef CMAKE_INTDIR /*In multi-configuration build systems the output subdirectory*/
259 buildBinPath = Path::join(CMAKE_BINARY_DIR, "bin", CMAKE_INTDIR);
261 buildBinPath = Path::join(CMAKE_BINARY_DIR, "bin");
263 if (Path::isEquivalent(searchPath, buildBinPath))
265 std::string testPath = Path::join(CMAKE_SOURCE_DIR, "share/top");
266 if (isAcceptableLibraryPath(testPath))
268 *bSourceLayout = true;
269 return CMAKE_SOURCE_DIR;
274 // Use the executable path to (try to) find the library dir.
275 // TODO: Consider only going up exactly the required number of levels.
276 while (!searchPath.empty())
278 if (isAcceptableLibraryPathPrefix(searchPath))
282 searchPath = Path::getParentPath(searchPath);
286 // End of smart searching. If we didn't find it in our parent tree,
287 // or if the program name wasn't set, return a fallback.
288 return findFallbackInstallationPrefixPath();
295 /********************************************************************
296 * CommandLineProgramContext::Impl
299 class CommandLineProgramContext::Impl
303 Impl(int argc, const char *const argv[],
304 ExecutableEnvironmentPointer env);
307 * Finds the full binary path if it isn't searched yet.
309 * Sets \a fullBinaryPath_ if it isn't set yet.
311 * The \a binaryPathMutex_ should be locked by the caller before
312 * calling this function.
314 void findBinaryPath() const;
316 ExecutableEnvironmentPointer executableEnv_;
317 std::string invokedName_;
318 std::string programName_;
319 std::string displayName_;
320 std::string commandLine_;
321 mutable std::string fullBinaryPath_;
322 mutable std::string installationPrefix_;
323 mutable bool bSourceLayout_;
324 mutable tMPI::mutex binaryPathMutex_;
327 CommandLineProgramContext::Impl::Impl()
328 : programName_("GROMACS"), bSourceLayout_(false)
332 CommandLineProgramContext::Impl::Impl(int argc, const char *const argv[],
333 ExecutableEnvironmentPointer env)
334 : executableEnv_(env), bSourceLayout_(false)
336 invokedName_ = (argc != 0 ? argv[0] : "");
337 programName_ = Path::getFilename(invokedName_);
338 programName_ = stripSuffixIfPresent(programName_, ".exe");
340 commandLine_ = quoteIfNecessary(programName_.c_str());
341 for (int i = 1; i < argc; ++i)
343 commandLine_.append(" ");
344 commandLine_.append(quoteIfNecessary(argv[i]));
348 void CommandLineProgramContext::Impl::findBinaryPath() const
350 if (fullBinaryPath_.empty())
352 fullBinaryPath_ = findFullBinaryPath(invokedName_, *executableEnv_);
353 fullBinaryPath_ = Path::normalize(Path::resolveSymlinks(fullBinaryPath_));
354 // TODO: Investigate/Consider using a dladdr()-based solution.
355 // Potentially less portable, but significantly simpler, and also works
356 // with user binaries even if they are located in some arbitrary location,
357 // as long as shared libraries are used.
361 /********************************************************************
362 * CommandLineProgramContext
365 CommandLineProgramContext::CommandLineProgramContext()
370 CommandLineProgramContext::CommandLineProgramContext(const char *binaryName)
371 : impl_(new Impl(1, &binaryName, DefaultExecutableEnvironment::create()))
375 CommandLineProgramContext::CommandLineProgramContext(
376 int argc, const char *const argv[])
377 : impl_(new Impl(argc, argv, DefaultExecutableEnvironment::create()))
381 CommandLineProgramContext::CommandLineProgramContext(
382 int argc, const char *const argv[], ExecutableEnvironmentPointer env)
383 : impl_(new Impl(argc, argv, env))
387 CommandLineProgramContext::~CommandLineProgramContext()
391 void CommandLineProgramContext::setDisplayName(const std::string &name)
393 GMX_RELEASE_ASSERT(impl_->displayName_.empty(),
394 "Can only set display name once");
395 impl_->displayName_ = name;
398 const char *CommandLineProgramContext::programName() const
400 return impl_->programName_.c_str();
403 const char *CommandLineProgramContext::displayName() const
405 return impl_->displayName_.empty()
406 ? impl_->programName_.c_str()
407 : impl_->displayName_.c_str();
410 const char *CommandLineProgramContext::commandLine() const
412 return impl_->commandLine_.c_str();
415 const char *CommandLineProgramContext::fullBinaryPath() const
417 tMPI::lock_guard<tMPI::mutex> lock(impl_->binaryPathMutex_);
418 impl_->findBinaryPath();
419 return impl_->fullBinaryPath_.c_str();
422 InstallationPrefixInfo CommandLineProgramContext::installationPrefix() const
424 tMPI::lock_guard<tMPI::mutex> lock(impl_->binaryPathMutex_);
425 if (impl_->installationPrefix_.empty())
427 impl_->findBinaryPath();
428 impl_->installationPrefix_ =
429 Path::normalize(findInstallationPrefixPath(impl_->fullBinaryPath_,
430 &impl_->bSourceLayout_));
432 return InstallationPrefixInfo(
433 impl_->installationPrefix_.c_str(),
434 impl_->bSourceLayout_);