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37 * Implements functions in path.h.
39 * \author Teemu Murtola <teemu.murtola@gmail.com>
40 * \ingroup module_utility
54 #ifdef GMX_NATIVE_WINDOWS
62 #include "gromacs/utility/futil.h"
63 #include "gromacs/utility/stringutil.h"
68 //! Directory separator to use when joining paths.
69 const char cDirSeparator = '/';
70 //! Directory separators to use when parsing paths.
71 const char cDirSeparators[] = "/\\";
72 /*! \var cPathSeparator
74 * Separator to use to split the PATH environment variable.
76 * When reading the PATH environment variable, Unix separates entries
77 * with colon, while windows uses semicolon.
79 #ifdef GMX_NATIVE_WINDOWS
80 const char cPathSeparator = ';';
82 const char cPathSeparator = ':';
85 //! Check whether a given character is a directory separator.
86 bool isDirSeparator(char chr)
88 return std::strchr(cDirSeparators, chr);
96 /********************************************************************
100 bool Path::containsDirectory(const std::string &path)
102 return path.find_first_of(cDirSeparators) != std::string::npos;
105 /* Check if the program name begins with "/" on unix/cygwin, or
106 * with "\" or "X:\" on windows. If not, the program name
107 * is relative to the current directory.
109 bool Path::isAbsolute(const char *path)
111 if (isDirSeparator(path[0]))
115 #ifdef GMX_NATIVE_WINDOWS
116 return path[0] != '\0' && path[1] == ':' && isDirSeparator(path[2]);
122 bool Path::isAbsolute(const std::string &path)
124 return isAbsolute(path.c_str());
127 bool Path::startsWith(const std::string &path, const std::string &prefix)
129 return gmx::startsWith(normalize(path), normalize(prefix));
132 std::string Path::join(const std::string &path1,
133 const std::string &path2)
135 // TODO: Remove extra separators if they are present in the input paths.
136 return path1 + cDirSeparator + path2;
140 std::string Path::join(const std::string &path1,
141 const std::string &path2,
142 const std::string &path3)
144 // TODO: Remove extra separators if they are present in the input paths.
145 return path1 + cDirSeparator + path2 + cDirSeparator + path3;
148 std::string Path::getParentPath(const std::string &path)
150 size_t pos = path.find_last_of(cDirSeparators);
151 if (pos == std::string::npos)
153 return std::string();
155 return path.substr(0, pos);
158 std::string Path::getFilename(const std::string &path)
160 size_t pos = path.find_last_of(cDirSeparators);
161 if (pos == std::string::npos)
165 return path.substr(pos+1);
168 std::string Path::stripExtension(const std::string &path)
170 size_t dirSeparatorPos = path.find_last_of(cDirSeparators);
171 size_t extPos = path.find_last_of('.');
172 if (extPos == std::string::npos
173 || (dirSeparatorPos != std::string::npos && extPos < dirSeparatorPos))
177 return path.substr(0, extPos);
180 std::string Path::normalize(const std::string &path)
182 std::string result(path);
183 // TODO: Remove . and .. entries.
184 if (DIR_SEPARATOR != '/')
186 std::replace(result.begin(), result.end(), '/', DIR_SEPARATOR);
188 #ifdef GMX_NATIVE_WINDOWS
189 if (std::isalpha(result[0]) && result[1] == ':')
191 result[0] = std::toupper(result[0]);
197 bool Path::exists(const char *path)
199 return gmx_fexist(path);
202 bool Path::exists(const std::string &path)
204 return exists(path.c_str());
207 std::string Path::getWorkingDirectory()
209 // TODO: Use exceptions instead of gmx_fatal().
210 char cwd[GMX_PATH_MAX];
211 gmx_getcwd(cwd, sizeof(cwd));
215 void Path::splitPathEnvironment(const std::string &pathEnv,
216 std::vector<std::string> *result)
222 separator = pathEnv.find(cPathSeparator, prevPos);
223 result->push_back(pathEnv.substr(prevPos, separator - prevPos));
224 prevPos = separator + 1;
226 while (separator != std::string::npos);
229 std::vector<std::string> Path::getExecutablePaths()
231 std::vector<std::string> result;
232 #ifdef GMX_NATIVE_WINDOWS
233 // Add the local dir since it is not in the path on Windows.
234 result.push_back("");
236 const char *path = std::getenv("PATH");
239 splitPathEnvironment(path, &result);
244 std::string Path::resolveSymlinks(const std::string &path)
246 std::string result(path);
247 #ifndef GMX_NATIVE_WINDOWS
248 char buf[GMX_PATH_MAX];
250 while ((length = readlink(result.c_str(), buf, sizeof(buf)-1)) > 0)
259 result = join(getParentPath(result), buf);
267 /********************************************************************
271 int Directory::create(const char *path)
273 if (Directory::exists(path))
277 #ifdef GMX_NATIVE_WINDOWS
280 if (mkdir(path, S_IRWXU | S_IRWXG | S_IROTH | S_IWOTH) != 0)
283 // TODO: Proper error handling.
290 int Directory::create(const std::string &path)
292 return create(path.c_str());
296 bool Directory::exists(const char *path)
299 if (stat(path, &info) != 0)
301 if (errno != ENOENT && errno != ENOTDIR)
303 // TODO: Proper error handling.
307 #ifdef GMX_NATIVE_WINDOWS
308 return ((_S_IFDIR & info.st_mode) != 0);
310 return S_ISDIR(info.st_mode);
315 bool Directory::exists(const std::string &path)
317 return exists(path.c_str());