refactor: use a custom command, set in config as copy_command, to copy to clipboard instead, to support all windowing systems

src/btop_config.cpp

@@ -65,6 +65,8 @@ namespace Config {
 		{"vim_keys",			"#* Set to True to enable \"h,j,k,l,g,G\" keys for directional control in lists.\n"
 								"#* Conflicting keys for h:\"help\" and k:\"kill\" is accessible while holding shift."},
 
+		{"copy_command",		"#* Command to copy to the system clipboard. Clipboard contents are piped into stdin."},
+
 		{"rounded_corners",		"#* Rounded corners on boxes, is ignored if TTY mode is ON."},
 
 		{"graph_symbol", 		"#* Default symbols to use for graph creation, \"braille\", \"block\" or \"tty\".\n"
@@ -221,6 +223,7 @@ namespace Config {
 		{"shown_boxes", "cpu mem net proc"},
 		{"graph_symbol", "braille"},
 		{"presets", "cpu:1:default,proc:0:default cpu:0:default,mem:0:default,net:0:default cpu:0:block,net:0:tty"},
+ 		{"copy_command", ""},
 		{"graph_symbol_cpu", "default"},
 		{"graph_symbol_gpu", "default"},
 		{"graph_symbol_mem", "default"},
@@ -242,6 +245,7 @@ namespace Config {
 		{"proc_filter", ""},
 		{"proc_command", ""},
 		{"selected_name", ""},
+ 		{"selected_cmd", ""},
 	#ifdef GPU_SUPPORT
 		{"custom_gpu_name0", ""},
 		{"custom_gpu_name1", ""},
@@ -525,6 +529,7 @@ namespace Config {
 			if (Proc::shown) {
 				ints.at("selected_pid") = Proc::selected_pid;
 				strings.at("selected_name") = Proc::selected_name;
+				strings.at("selected_cmd") = Proc::selected_cmd;
 				ints.at("proc_start") = Proc::start;
 				ints.at("proc_selected") = Proc::selected;
 				ints.at("selected_depth") = Proc::selected_depth;

src/btop_draw.cpp

@@ -1462,6 +1462,7 @@ namespace Proc {
 	bool shown = true, redraw = true;
 	int selected_pid = 0, selected_depth = 0;
 	string selected_name;
+	string selected_cmd;
 	std::unordered_map<size_t, Draw::Graph> p_graphs;
 	std::unordered_map<size_t, bool> p_wide_cmd;
 	std::unordered_map<size_t, int> p_counters;
@@ -1712,6 +1713,7 @@ namespace Proc {
 				mouse_x += 6;
 			}
 			out += title_left_down + Fx::b + hi_color + 's' + t_color + "ignals" + Fx::ub + title_right_down;
+			out += title_left_down + Fx::b + t_color + "copy cmd" + Fx::b + hi_color + " y" + t_color + Fx::ub + title_right_down;
 			if (selected > 0) Input::mouse_mappings["s"] = {y + height - 1, mouse_x, 1, 7};
 
 			//? Labels for fields in list
@@ -1788,6 +1790,7 @@ namespace Proc {
 			if (is_selected) {
 				selected_pid = (int)p.pid;
 				selected_name = p.name;
+				selected_cmd = p.cmd;
 				selected_depth = p.depth;
 			}
 

src/btop_input.cpp

@@ -463,6 +463,22 @@ namespace Input {
 					else if (old_selected != new_selected and (old_selected == 0 or new_selected == 0))
 						redraw = true;
 				}
+				else if (key == "y") {
+					atomic_wait(Runner::active);
+
+					auto copy_command = Config::getS("copy_command");
+					if (copy_command.empty()) {
+						vector<string> cont_vec;
+						cont_vec.emplace_back("`copy_command` is empty");
+						Menu::msgBox messageBox = Menu::msgBox{45, 0, cont_vec, "error"};
+						Global::overlay = messageBox();
+					} else {
+						FILE *p_copy_stdin = popen(copy_command.c_str(), "w");
+						auto selected_cmd = Config::getS("selected_cmd");
+						fwrite(selected_cmd.c_str(), sizeof(char), selected_cmd.length(), p_copy_stdin);
+						pclose(p_copy_stdin);
+					}
+				}
 				else keep_going = true;
 
 				if (not keep_going) {

src/btop_shared.hpp

@@ -306,7 +306,7 @@ namespace Proc {
 	extern int select_max;
 	extern atomic<int> detailed_pid;
 	extern int selected_pid, start, selected, collapse, expand, filter_found, selected_depth;
-	extern string selected_name;
+	extern string selected_name, selected_cmd;
 
 	//? Contains the valid sorting options for processes
 	const vector<string> sort_vector = {

src/linux/btop_collect.cpp

@@ -210,7 +210,7 @@ namespace Mem {
 namespace Shared {
 
 	fs::path procPath, passwd_path;
-	long pageSize, clkTck, coreCount;
+	long pageSize, clkTck, coreCount, arg_max;
 
 	void init() {
 
@@ -244,6 +244,9 @@ namespace Shared {
 			Logger::warning("Could not get system clock ticks per second. Defaulting to 100, processes cpu usage might be incorrect.");
 		}
 
+		//* Get maximum length of process arguments
+		arg_max = sysconf(_SC_ARG_MAX);
+
 		//? Init for namespace Cpu
 		if (not fs::exists(Cpu::freq_path) or access(Cpu::freq_path.c_str(), R_OK) == -1) Cpu::freq_path.clear();
 		Cpu::current_cpu.core_percent.insert(Cpu::current_cpu.core_percent.begin(), Shared::coreCount, {});
@@ -2529,8 +2532,8 @@ namespace Proc {
 					long_string.clear();
 					while(getline(pread, long_string, '\0')) {
 						new_proc.cmd += long_string + ' ';
-						if (new_proc.cmd.size() > 1000) {
-							new_proc.cmd.resize(1000);
+						if (new_proc.cmd.size() > static_cast<size_t>(Shared::arg_max)) {
+							new_proc.cmd.resize(Shared::arg_max);
 							break;
 						}
 					}

src/osx/btop_collect.cpp

@@ -1227,7 +1227,7 @@ namespace Proc {
 								std::string_view proc_args(proc_chars.get(), argmax);
 								if (size_t null_pos = proc_args.find('\0', sizeof(argc)); null_pos != string::npos) {
 									if (size_t start_pos = proc_args.find_first_not_of('\0', null_pos); start_pos != string::npos) {
-										while (argc-- > 0 and null_pos != string::npos and cmp_less(new_proc.cmd.size(), 1000)) {
+										while (argc-- > 0 and null_pos != string::npos and cmp_less(new_proc.cmd.size(), argmax)) {
 											null_pos = proc_args.find('\0', start_pos);
 											new_proc.cmd += (string)proc_args.substr(start_pos, null_pos - start_pos) + ' ';
 											start_pos = null_pos + 1;
@@ -1238,8 +1238,8 @@ namespace Proc {
 							}
 						}
 						if (new_proc.cmd.empty()) new_proc.cmd = f_name;
-						if (new_proc.cmd.size() > 1000) {
-							new_proc.cmd.resize(1000);
+						if (new_proc.cmd.size() > static_cast<size_t>(Shared::arg_max)) {
+							new_proc.cmd.resize(Shared::arg_max);
 							new_proc.cmd.shrink_to_fit();
 						}
 						new_proc.ppid = kproc.kp_eproc.e_ppid;