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('/')==string::npos)
42 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);
136 return ::getcwd(buf, sizeof(buf));
139 Path get_user_data_dir()
141 const string &name = Application::get_name();
143 throw logic_error("application name not known");
144 return get_user_data_dir();
147 Path get_sys_conf_dir(const string &argv0)
150 throw invalid_argument("get_sys_conf_dir");
152 Path dir = get_bin_dir(argv0);
154 if(dir[-1]=="bin" || dir[-1]=="sbin")
165 Path get_sys_conf_dir()
167 const char *argv0 = Application::get_argv0();
169 throw logic_error("no startup command");
170 return get_sys_conf_dir(argv0);
173 Path get_sys_data_dir(const string &argv0, const string &appname)
175 if(argv0.empty() || appname.empty())
176 throw invalid_argument("get_sys_data_dir");
178 Path dir = get_bin_dir(argv0);
180 if(dir[-1]=="bin" || dir[-1]=="sbin")
181 return dir/".."/"share"/appname;
182 else if(dir[-1]=="MacOS")
183 return dir/".."/"Resources";
188 Path get_sys_data_dir()
190 const char *argv0 = Application::get_argv0();
192 throw logic_error("no startup command");
193 return get_sys_data_dir(argv0, Application::get_name());
196 Path get_sys_lib_dir(const string &argv0, const string &appname)
198 if(argv0.empty() || appname.empty())
199 throw invalid_argument("get_sys_data_dir");
201 Path dir = get_bin_dir(argv0);
203 if(dir[-1]=="bin" || dir[-1]=="sbin")
204 return dir/".."/"lib"/appname;
209 Path get_sys_lib_dir()
211 const char *argv0 = Application::get_argv0();
213 throw logic_error("no startup command");
214 return get_sys_lib_dir(argv0, Application::get_name());
217 void chdir(const Path &path)
219 if(::chdir(path.str().c_str())==-1)
220 throw system_error("chdir");