4 #include <msp/core/application.h>
5 #include <msp/core/systemerror.h>
6 #include <msp/strings/regex.h>
7 #include <msp/strings/utils.h>
30 /** Helper function to determine the location of the program's executable.
31 Caches the last result to cut down filesystem access with repeated calls. */
32 const Path &get_bin_dir(const string &argv0)
34 static string last_argv0;
37 if(!(argv0==last_argv0))
40 if(argv0.find(DIRSEP)==string::npos)
41 if(const char *path = getenv("PATH"))
43 vector<string> dirs = split(path, ITEMSEP);
44 for(vector<string>::const_iterator i=dirs.begin(); i!=dirs.end(); ++i)
45 if(exists(Path(*i)/argv0))
47 exe = realpath(Path(*i)/argv0);
53 exe = realpath(argv0);
56 bin_dir = dirname(exe);
65 not_a_directory::not_a_directory(const Path &p):
66 runtime_error(p.str())
70 void mkpath(const Path &path, int mode)
73 for(Path::Iterator i=path.begin(); i!=path.end(); ++i)
77 if(p.size()==1 && p.is_absolute())
80 if(FS::Stat st = stat(p))
82 if(!st.is_directory())
83 throw not_a_directory(p);
91 void rmpath(const Path &path)
93 list<string> files = list_files(path);
94 for(list<string>::iterator i=files.begin(); i!=files.end(); ++i)
106 list<string> list_files(const Path &path)
108 return list_filtered(path, string());
111 list<string> list_filtered(const Path &path, const string &filter)
113 Regex r_filter(filter);
116 DIR *dir = opendir(path.str().c_str());
118 throw system_error("opendir");
120 while(dirent *de = readdir(dir))
122 const char *fn = de->d_name;
123 if(fn[0]=='.' && (fn[1]==0 || (fn[1]=='.' && fn[2]==0)))
125 if(r_filter.match(fn))
126 result.push_back(fn);
133 Path get_sys_conf_dir(const string &)
135 return get_sys_conf_dir();
138 Path get_sys_conf_dir()
140 const char *argv0 = Application::get_argv0();
142 throw logic_error("no startup command");
144 Path dir = get_bin_dir(argv0);
146 if(dir[-1]=="bin" || dir[-1]=="sbin")
157 Path get_sys_data_dir(const string &, const string &)
159 return get_sys_data_dir();
162 Path get_sys_data_dir()
164 const char *argv0 = Application::get_argv0();
166 throw logic_error("no startup command");
168 Path dir = get_bin_dir(argv0);
170 if(dir[-1]=="bin" || dir[-1]=="sbin")
171 return dir/".."/"share"/Application::get_name();
172 else if(dir[-1]=="MacOS")
173 return dir/".."/"Resources";
178 Path get_sys_lib_dir(const string &, const string &)
180 return get_sys_lib_dir();
183 Path get_sys_lib_dir()
185 const char *argv0 = Application::get_argv0();
187 throw logic_error("no startup command");
189 Path dir = get_bin_dir(argv0);
191 if(dir[-1]=="bin" || dir[-1]=="sbin")
192 return dir/".."/"lib"/Application::get_name();
197 Path path_lookup(const string &name, const list<Path> &paths)
199 for(list<Path>::const_iterator i=paths.begin(); i!=paths.end(); ++i)
203 return realpath(full);
209 Path path_lookup(const string &name)
211 const char *path = getenv("PATH");
212 vector<string> dirs = split(path, ITEMSEP);
213 return path_lookup(name, list<Path>(dirs.begin(), dirs.end()));