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authorBent Bisballe Nyeng <deva@aasimon.org>2023-01-20 08:37:29 +0100
committerBent Bisballe Nyeng <deva@aasimon.org>2023-01-20 09:02:45 +0100
commita5585150f0ff8d27ddd22792f521f1374a3eedd8 (patch)
tree3bb442e835502d452ebe5137ad7fca5f5156bb5f /src/util.cc
parent3cbadb8f5c55020ece96fab0fc8f4f51da01888e (diff)
Add env to execute function.
Diffstat (limited to 'src/util.cc')
-rw-r--r--src/util.cc79
1 files changed, 79 insertions, 0 deletions
diff --git a/src/util.cc b/src/util.cc
index fe16471..db5a5f6 100644
--- a/src/util.cc
+++ b/src/util.cc
@@ -167,3 +167,82 @@ std::string esc(const std::string& in)
}
return out;
}
+
+std::vector<std::string> get_paths()
+{
+ std::vector<std::string> paths;
+
+ std::string path_env = std::getenv("PATH");
+
+#ifdef _WIN32
+ const char sep{';'};
+#else
+ const char sep{':'};
+#endif
+
+ std::stringstream ss(path_env);
+ std::string path;
+ while (std::getline(ss, path, sep))
+ {
+ paths.push_back(path);
+ }
+
+ return paths;
+}
+
+bool check_executable(const std::filesystem::path& prog)
+{
+ auto perms = std::filesystem::status(prog).permissions();
+
+ if((perms & std::filesystem::perms::owner_exec) != std::filesystem::perms::none)
+ {
+ return true;
+ }
+
+ if((perms & std::filesystem::perms::group_exec) != std::filesystem::perms::none)
+ {
+ return true;
+ }
+
+ if((perms & std::filesystem::perms::others_exec) != std::filesystem::perms::none)
+ {
+ return true;
+ }
+
+ return false;
+}
+
+std::string locate(const std::string& prog,
+ const std::vector<std::string>& paths,
+ const std::string& arch)
+{
+ std::string program = prog;
+ if(!arch.empty())
+ {
+ program = arch + "-" + prog;
+ }
+
+ // first check if arch contains an absolute path to prog
+ if(std::filesystem::exists(program))
+ {
+ if(check_executable(program))
+ {
+ return program;
+ }
+ }
+
+ for(const auto& path_str : paths)
+ {
+ std::filesystem::path path(path_str);
+ auto prog_path = path / program;
+ if(std::filesystem::exists(prog_path))
+ {
+ if(check_executable(prog_path))
+ {
+ return prog_path.string();
+ }
+ }
+ }
+
+ return {};
+}