src/commands/GlobalCommandController.cc at main · doomsdayone/openmsx

◆ main openmsx / src / commands / GlobalCommandController.cc

16.4 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw

#include "GlobalCommandController.hh"

#include "CliConnection.hh"
#include "CommandException.hh"
#include "GlobalCliComm.hh"
#include "LocalFileReference.hh"
#include "ProxyCommand.hh"
#include "ProxySetting.hh"
#include "Reactor.hh"
#include "Setting.hh"
#include "SettingsManager.hh"
#include "TclObject.hh"
#include "Version.hh"

#include "ScopedAssign.hh"
#include "function_ref.hh"
#include "join.hh"
#include "one_of.hh"
#include "outer.hh"
#include "stl.hh"
#include "xrange.hh"

#include "build-info.hh"

#include <algorithm>
#include <cassert>
#include <memory>
#include <ranges>

namespace openmsx {

GlobalCommandController::GlobalCommandController(
	EventDistributor& eventDistributor,
	GlobalCliComm& cliComm_, Reactor& reactor_)
	: cliComm(cliComm_)
	, reactor(reactor_)
	, openMSXInfoCommand(*this, "openmsx_info")
	, hotKey(reactor.getRTScheduler(), *this, eventDistributor)
	, settingsConfig(*this, hotKey, reactor.getShortcuts())
	, helpCmd(*this)
	, tabCompletionCmd(*this)
	, updateCmd(*this)
	, platformInfo(getOpenMSXInfoCommand())
	, versionInfo (getOpenMSXInfoCommand())
	, romInfoTopic(getOpenMSXInfoCommand())
{
}

GlobalCommandController::~GlobalCommandController() = default;

GlobalCommandControllerBase::~GlobalCommandControllerBase()
{
	// GlobalCommandController destructor must have run before
	// we can check this.
#ifdef DEBUG
	assert(commands.empty());
#endif
	assert(commandCompleters.empty());
}

void GlobalCommandController::registerProxyCommand(std::string_view name)
{
	auto it = proxyCommandMap.find(name);
	if (it == end(proxyCommandMap)) {
		it = proxyCommandMap.emplace_noDuplicateCheck(
			0, std::make_unique<ProxyCmd>(reactor, name));
	}
	++it->first;
}

void GlobalCommandController::unregisterProxyCommand(std::string_view name)
{
	auto it = proxyCommandMap.find(name);
	assert(it != end(proxyCommandMap));
	assert(it->first > 0);
	--it->first;
	if (it->first == 0) {
		proxyCommandMap.erase(it);
	}
}

GlobalCommandController::ProxySettings::iterator
GlobalCommandController::findProxySetting(std::string_view name)
{
	return std::ranges::find(proxySettings, name,
		[](auto& v) { return v.first->getFullName(); });
}

void GlobalCommandController::registerProxySetting(const Setting& setting)
{
	const auto& name = setting.getBaseNameObj();
	auto it = findProxySetting(name.getString());
	if (it == end(proxySettings)) {
		// first occurrence
		auto proxy = std::make_unique<ProxySetting>(reactor, name);
		getSettingsManager().registerSetting(*proxy);
		getInterpreter().registerSetting(*proxy);
		proxySettings.emplace_back(std::move(proxy), 1);
	} else {
		// was already registered
		++(it->second);
	}
}

void GlobalCommandController::unregisterProxySetting(const Setting& setting)
{
	auto it = findProxySetting(setting.getBaseName());
	assert(it != end(proxySettings));
	assert(it->second);
	--(it->second);
	if (it->second == 0) {
		auto& proxy = *it->first;
		getInterpreter().unregisterSetting(proxy);
		getSettingsManager().unregisterSetting(proxy);
		move_pop_back(proxySettings, it);
	}
}

CliComm& GlobalCommandController::getCliComm()
{
	return cliComm;
}

Interpreter& GlobalCommandController::getInterpreter()
{
	return interpreter;
}

void GlobalCommandController::registerCommand(
	Command& command, zstring_view str)
{
#ifdef DEBUG
	assert(!commands.contains(str));
	commands.emplace_noDuplicateCheck(str, &command);
#endif
	interpreter.registerCommand(str, command);
}

void GlobalCommandController::unregisterCommand(
	Command& command, std::string_view str)
{
	(void)str;
#ifdef DEBUG
	assert(commands.contains(str));
	assert(commands[str] == &command);
	commands.erase(str);
#endif
	interpreter.unregisterCommand(command);
}

void GlobalCommandController::registerCompleter(
	CommandCompleter& completer, std::string_view str)
{
	if (str.starts_with("::")) str.remove_prefix(2); // drop leading ::
	assert(!commandCompleters.contains(str));
	commandCompleters.emplace_noDuplicateCheck(str, &completer);
}

void GlobalCommandController::unregisterCompleter(
	CommandCompleter& completer, std::string_view str)
{
	if (str.starts_with("::")) str.remove_prefix(2); // drop leading ::
	assert(commandCompleters.contains(str));
	assert(commandCompleters[str] == &completer); (void)completer;
	commandCompleters.erase(str);
}

void GlobalCommandController::registerSetting(Setting& setting)
{
	getSettingsManager().registerSetting(setting);
	interpreter.registerSetting(setting);
}

void GlobalCommandController::unregisterSetting(Setting& setting)
{
	interpreter.unregisterSetting(setting);
	getSettingsManager().unregisterSetting(setting);
}

static std::vector<std::string> split(std::string_view str, const char delimiter)
{
	std::vector<std::string> tokens;

	enum class ParseState : uint8_t {Alpha, BackSlash, Quote};
	using enum ParseState;
	ParseState state = Alpha;

	for (auto chr : str) {
		switch (state) {
			case Alpha:
				if (tokens.empty()) {
					tokens.emplace_back();
				}
				if (chr == delimiter) {
					// token done, start new token
					tokens.emplace_back();
				} else {
					tokens.back() += chr;
					if (chr == '\\') {
						state = BackSlash;
					} else if (chr == '"') {
						state = Quote;
					}
				}
				break;
			case Quote:
				tokens.back() += chr;
				if (chr == '"') {
					state = Alpha;
				}
				break;
			case BackSlash:
				tokens.back() += chr;
				state = Alpha;
				break;
		}
	}
	return tokens;
}

static std::string removeEscaping(const std::string& str)
{
	enum class ParseState : uint8_t {Alpha, BackSlash, Quote};
	using enum ParseState;
	ParseState state = Alpha;

	std::string result;
	for (auto chr : str) {
		switch (state) {
			case Alpha:
				if (chr == '\\') {
					state = BackSlash;
				} else if (chr == '"') {
					state = Quote;
				} else {
					result += chr;
				}
				break;
			case Quote:
				if (chr == '"') {
					state = Alpha;
				} else {
					result += chr;
				}
				break;
			case BackSlash:
				result += chr;
				state = Alpha;
				break;
		}
	}
	return result;
}

static std::vector<std::string> removeEscaping(std::span<const std::string> input, bool keepLastIfEmpty)
{
	std::vector<std::string> result;
	for (const auto& s : input) {
		if (!s.empty()) {
			result.push_back(removeEscaping(s));
		}
	}
	if (keepLastIfEmpty && (input.empty() || input.back().empty())) {
		result.emplace_back();
	}
	return result;
}

static std::string escapeChars(const std::string& str, std::string_view chars)
{
	std::string result;
	for (auto chr : str) {
		if (chars.contains(chr)) {
			result += '\\';
		}
		result += chr;
	}
	return result;
}

static std::string addEscaping(const std::string& str, bool quote, bool finished)
{
	if (str.empty() && finished) {
		quote = true;
	}
	std::string result = escapeChars(str, "$[]");
	if (quote) {
		result.insert(result.begin(), '"');
		if (finished) {
			result += '"';
		}
	} else {
		result = escapeChars(result, " ");
	}
	return result;
}

bool GlobalCommandController::isComplete(zstring_view command)
{
	return interpreter.isComplete(command);
}

TclObject GlobalCommandController::executeCommand(
	zstring_view command, CliConnection* connection_)
{
	ScopedAssign sa(connection, connection_);
	return interpreter.execute(command);
}

void GlobalCommandController::source(const std::string& script)
{
	try {
		LocalFileReference file(script);
		interpreter.executeFile(file.getFilename());
	} catch (CommandException& e) {
		getCliComm().printWarning(
			 "While executing ", script, ": ", e.getMessage());
	}
}

static std::string tabCompletionImpl(std::string_view command, Interpreter& interpreter, function_ref<void(std::vector<std::string>&)> action)
{
	// split on 'active' command (the command that should actually be
	// completed). Some examples:
	//    if {[debug rea<tab> <-- should complete the 'debug' command
	//                              instead of the 'if' command
	//    bind F6 { cycl<tab> <-- should complete 'cycle' instead of 'bind'
	TclParser parser = interpreter.parse(command);
	int last = parser.getLast();
	std::string_view pre  = command.substr(0, last);
	std::string_view post = command.substr(last);

	// split command string in tokens
	std::vector<std::string> originalTokens = split(post, ' ');
	if (originalTokens.empty()) {
		originalTokens.emplace_back();
	}

	// complete last token
	auto tokens = removeEscaping(originalTokens, true);
	auto oldNum = tokens.size();
	action(tokens);
	auto newNum = tokens.size();
	bool tokenFinished = oldNum != newNum;

	// replace last token
	std::string& original = originalTokens.back();
	if (const std::string& completed = tokens[oldNum - 1]; !completed.empty()) {
		bool quote = !original.empty() && (original[0] == '"');
		original = addEscaping(completed, quote, tokenFinished);
	}
	if (tokenFinished) {
		assert(newNum == (oldNum + 1));
		assert(tokens.back().empty());
		originalTokens.emplace_back();
	}

	// rebuild command string
	return strCat(pre, join(originalTokens, ' '));
}

std::string GlobalCommandController::tabCompletion(std::string_view command)
{
	return tabCompletionImpl(command, interpreter, [&](std::vector<std::string>& tokens) {
		tabCompletion(tokens);
	});
}

std::string GlobalCommandController::tabCompletionReplace(std::string_view command, const CompletionCandidate& replacement)
{
	return tabCompletionImpl(command, interpreter, [&](std::vector<std::string>& tokens) {
		assert(!tokens.empty());
		tokens.back() = replacement.text;
		if (!replacement.partial) {
			tokens.emplace_back();
		}
	});
}

void GlobalCommandController::tabCompletion(std::vector<std::string>& tokens)
{
	if (tokens.empty()) {
		// nothing typed yet
		return;
	}
	if (tokens.size() == 1) {
		std::string_view cmd = tokens[0];
		std::string_view leadingNs;
		// remove leading ::
		if (cmd.starts_with("::")) {
			cmd.remove_prefix(2);
			leadingNs = "::";
		}
		// get current (typed) namespace
		auto p1 = cmd.rfind("::");
		std::string_view ns = (p1 == std::string_view::npos) ? cmd : cmd.substr(0, p1 + 2);

		// build a list of all command strings
		TclObject names = interpreter.getCommandNames();
		std::vector<std::string> names2;
		names2.reserve(names.size());
		for (std::string_view n1 : names) {
			// remove leading ::
			if (n1.starts_with("::")) n1.remove_prefix(2);
			// initial namespace part must match
			if (!n1.starts_with(ns)) continue;
			// the part following the initial namespace
			std::string_view n2 = n1.substr(ns.size());
			// only keep upto the next namespace portion,
			auto p2 = n2.find("::");
			auto n3 = (p2 == std::string_view::npos) ? n1 : n1.substr(0, ns.size() + p2 + 2);
			// don't care about adding the same string multiple times
			names2.push_back(strCat(leadingNs, n3));
		}
		Completer::completeString(tokens, names2);
	} else {
		std::string_view cmd = tokens.front();
		if (cmd.starts_with("::")) cmd.remove_prefix(2); // drop leading ::

		if (auto* v = lookup(commandCompleters, cmd)) {
			(*v)->tabCompletion(tokens);
		} else {
			TclObject command = makeTclList("openmsx::tabcompletion");
			command.addListElements(tokens);
			try {
				TclObject list = command.executeCommand(interpreter);
				bool sensitive = true;
				auto begin = list.begin();
				auto end = list.end();
				if (begin != end) {
					if (auto back = end[-1]; back == one_of("true", "false")) {
						--end;
						sensitive = back == "true";
					}
				}
				Completer::completeString(
					tokens, std::ranges::subrange(begin, end), sensitive);
			} catch (CommandException& e) {
				cliComm.printWarning(
					"Error while executing tab-completion "
					"proc: ", e.getMessage());
			}
		}
	}
}


// Help Command

GlobalCommandController::HelpCmd::HelpCmd(GlobalCommandController& controller_)
	: Command(controller_, "help")
{
}

void GlobalCommandController::HelpCmd::execute(
	std::span<const TclObject> tokens, TclObject& result)
{
	auto& controller = OUTER(GlobalCommandController, helpCmd);
	switch (tokens.size()) {
	case 1: {
		std::string text =
			"Use 'help [command]' to get help for a specific command\n"
			"The following commands exist:\n";
		auto cmds = concat<std::string_view>(
			std::views::keys(controller.commandCompleters),
			getInterpreter().execute("openmsx::all_command_names_with_help"));
		std::erase_if(cmds, [](const auto& c) { return c.contains("::"); });
		std::ranges::sort(cmds);
		for (auto& line : formatListInColumns(cmds)) {
			strAppend(text, line, '\n');
		}
		result = text;
		break;
	}
	default: {
		if (const auto* v = lookup(controller.commandCompleters, tokens[1].getString())) {
			result = (*v)->help(tokens.subspan(1));
		} else {
			TclObject command = makeTclList("openmsx::help");
			command.addListElements(std::views::drop(tokens, 1));
			result = command.executeCommand(getInterpreter());
		}
		break;
	}
	}
}

std::string GlobalCommandController::HelpCmd::help(std::span<const TclObject> /*tokens*/) const
{
	return "prints help information for commands\n";
}

void GlobalCommandController::HelpCmd::tabCompletion(std::vector<std::string>& tokens) const
{
	std::string front = std::move(tokens.front());
	tokens.erase(begin(tokens));
	auto& controller = OUTER(GlobalCommandController, helpCmd);
	controller.tabCompletion(tokens);
	tokens.insert(begin(tokens), std::move(front));
}


// TabCompletionCmd Command

GlobalCommandController::TabCompletionCmd::TabCompletionCmd(
		GlobalCommandController& controller_)
	: Command(controller_, "tabcompletion")
{
}

void GlobalCommandController::TabCompletionCmd::execute(
	std::span<const TclObject> tokens, TclObject& result)
{
	checkNumArgs(tokens, 2, "commandstring");
	// TODO this prints list of possible completions in the console
	auto& controller = OUTER(GlobalCommandController, tabCompletionCmd);
	result = controller.tabCompletion(tokens[1].getString());
}

std::string GlobalCommandController::TabCompletionCmd::help(std::span<const TclObject> /*tokens*/) const
{
	return "!!! This command will change in the future !!!\n"
	       "Tries to complete the given argument as if it were typed in "
	       "the console. This command is only useful to provide "
	       "tabcompletion to external console interfaces.";
}


// class UpdateCmd

GlobalCommandController::UpdateCmd::UpdateCmd(CommandController& commandController_)
	: Command(commandController_, "openmsx_update")
{
}

static GlobalCliComm::UpdateType getType(const TclObject& name)
{
	for (auto updateStr = CliComm::getUpdateStrings();
	     auto i : xrange(updateStr.size())) {
		if (updateStr[i] == name) {
			return static_cast<CliComm::UpdateType>(i);
		}
	}
	throw CommandException("No such update type: ", name.getString());
}

CliConnection& GlobalCommandController::UpdateCmd::getConnection()
{
	const auto& controller = OUTER(GlobalCommandController, updateCmd);
	if (auto* c = controller.getConnection()) {
		return *c;
	}
	throw CommandException("This command only makes sense when "
	                       "it's used from an external application.");
}

void GlobalCommandController::UpdateCmd::execute(
	std::span<const TclObject> tokens, TclObject& /*result*/)
{
	checkNumArgs(tokens, 3, Prefix{1}, "enable|disable type");
	if (tokens[1] == "enable") {
		getConnection().setUpdateEnable(getType(tokens[2]), true);
	} else if (tokens[1] == "disable") {
		getConnection().setUpdateEnable(getType(tokens[2]), false);
	} else {
		throw SyntaxError();
	}
}

std::string GlobalCommandController::UpdateCmd::help(std::span<const TclObject> /*tokens*/) const
{
	return "Enable or disable update events for external applications. See doc/openmsx-control-xml.txt.";
}

void GlobalCommandController::UpdateCmd::tabCompletion(std::vector<std::string>& tokens) const
{
	switch (tokens.size()) {
	case 2: {
		using namespace std::literals;
		static constexpr std::array ops = {"enable"sv, "disable"sv};
		completeString(tokens, ops);
		break;
	}
	case 3:
		completeString(tokens, CliComm::getUpdateStrings());
		break;
	}
}


// Platform info

GlobalCommandController::PlatformInfo::PlatformInfo(InfoCommand& openMSXInfoCommand_)
	: InfoTopic(openMSXInfoCommand_, "platform")
{
}

void GlobalCommandController::PlatformInfo::execute(
	std::span<const TclObject> /*tokens*/, TclObject& result) const
{
	result = TARGET_PLATFORM;
}

std::string GlobalCommandController::PlatformInfo::help(std::span<const TclObject> /*tokens*/) const
{
	return "Prints openMSX platform.";
}

// Version info

GlobalCommandController::VersionInfo::VersionInfo(InfoCommand& openMSXInfoCommand_)
	: InfoTopic(openMSXInfoCommand_, "version")
{
}

void GlobalCommandController::VersionInfo::execute(
	std::span<const TclObject> /*tokens*/, TclObject& result) const
{
	result = Version::full();
}

std::string GlobalCommandController::VersionInfo::help(std::span<const TclObject> /*tokens*/) const
{
	return "Prints openMSX version.";
}

} // namespace openmsx

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e8555c89 Andy McCall 1 month ago	1	#include "GlobalCommandController.hh"
	2
	3	#include "CliConnection.hh"
	4	#include "CommandException.hh"
	5	#include "GlobalCliComm.hh"
	6	#include "LocalFileReference.hh"
	7	#include "ProxyCommand.hh"
	8	#include "ProxySetting.hh"
	9	#include "Reactor.hh"
	10	#include "Setting.hh"
	11	#include "SettingsManager.hh"
	12	#include "TclObject.hh"
	13	#include "Version.hh"
	14
	15	#include "ScopedAssign.hh"
	16	#include "function_ref.hh"
	17	#include "join.hh"
	18	#include "one_of.hh"
	19	#include "outer.hh"
	20	#include "stl.hh"
	21	#include "xrange.hh"
	22
	23	#include "build-info.hh"
	24
	25	#include <algorithm>
	26	#include <cassert>
	27	#include <memory>
	28	#include <ranges>
	29
	30	namespace openmsx {
	31
	32	GlobalCommandController::GlobalCommandController(
	33	EventDistributor& eventDistributor,
	34	GlobalCliComm& cliComm_, Reactor& reactor_)
	35	: cliComm(cliComm_)
	36	, reactor(reactor_)
	37	, openMSXInfoCommand(*this, "openmsx_info")
	38	, hotKey(reactor.getRTScheduler(), *this, eventDistributor)
	39	, settingsConfig(*this, hotKey, reactor.getShortcuts())
	40	, helpCmd(*this)
	41	, tabCompletionCmd(*this)
	42	, updateCmd(*this)
	43	, platformInfo(getOpenMSXInfoCommand())
	44	, versionInfo (getOpenMSXInfoCommand())
	45	, romInfoTopic(getOpenMSXInfoCommand())
	46	{
	47	}
	48
	49	GlobalCommandController::~GlobalCommandController() = default;
	50
	51	GlobalCommandControllerBase::~GlobalCommandControllerBase()
	52	{
	53	// GlobalCommandController destructor must have run before
	54	// we can check this.
	55	#ifdef DEBUG
	56	assert(commands.empty());
	57	#endif
	58	assert(commandCompleters.empty());
	59	}
	60
	61	void GlobalCommandController::registerProxyCommand(std::string_view name)
	62	{
	63	auto it = proxyCommandMap.find(name);
	64	if (it == end(proxyCommandMap)) {
65	it = proxyCommandMap.emplace_noDuplicateCheck(
66	0, std::make_unique<ProxyCmd>(reactor, name));
67	}
68	++it->first;
69	}
70
71	void GlobalCommandController::unregisterProxyCommand(std::string_view name)
72	{
73	auto it = proxyCommandMap.find(name);
74	assert(it != end(proxyCommandMap));
75	assert(it->first > 0);
76	--it->first;
77	if (it->first == 0) {
78	proxyCommandMap.erase(it);
79	}
80	}
81
82	GlobalCommandController::ProxySettings::iterator
83	GlobalCommandController::findProxySetting(std::string_view name)
84	{
85	return std::ranges::find(proxySettings, name,
86	[](auto& v) { return v.first->getFullName(); });
87	}
88
89	void GlobalCommandController::registerProxySetting(const Setting& setting)
90	{
91	const auto& name = setting.getBaseNameObj();
92	auto it = findProxySetting(name.getString());
93	if (it == end(proxySettings)) {
94	// first occurrence
95	auto proxy = std::make_unique<ProxySetting>(reactor, name);
96	getSettingsManager().registerSetting(*proxy);
97	getInterpreter().registerSetting(*proxy);
98	proxySettings.emplace_back(std::move(proxy), 1);
99	} else {
100	// was already registered
101	++(it->second);
102	}
103	}
104
105	void GlobalCommandController::unregisterProxySetting(const Setting& setting)
106	{
107	auto it = findProxySetting(setting.getBaseName());
108	assert(it != end(proxySettings));
109	assert(it->second);
110	--(it->second);
111	if (it->second == 0) {
112	auto& proxy = *it->first;
113	getInterpreter().unregisterSetting(proxy);
114	getSettingsManager().unregisterSetting(proxy);
115	move_pop_back(proxySettings, it);
116	}
117	}
118
119	CliComm& GlobalCommandController::getCliComm()
120	{
121	return cliComm;
122	}
123
124	Interpreter& GlobalCommandController::getInterpreter()
125	{
126	return interpreter;
127	}
128
129	void GlobalCommandController::registerCommand(
130	Command& command, zstring_view str)
131	{
132	#ifdef DEBUG
133	assert(!commands.contains(str));
134	commands.emplace_noDuplicateCheck(str, &command);
135	#endif
136	interpreter.registerCommand(str, command);
137	}
138
139	void GlobalCommandController::unregisterCommand(
140	Command& command, std::string_view str)
141	{
142	(void)str;
143	#ifdef DEBUG
144	assert(commands.contains(str));
145	assert(commands[str] == &command);
146	commands.erase(str);
147	#endif
148	interpreter.unregisterCommand(command);
149	}
150
151	void GlobalCommandController::registerCompleter(
152	CommandCompleter& completer, std::string_view str)
153	{
154	if (str.starts_with("::")) str.remove_prefix(2); // drop leading ::
155	assert(!commandCompleters.contains(str));
156	commandCompleters.emplace_noDuplicateCheck(str, &completer);
157	}
158
159	void GlobalCommandController::unregisterCompleter(
160	CommandCompleter& completer, std::string_view str)
161	{
162	if (str.starts_with("::")) str.remove_prefix(2); // drop leading ::
163	assert(commandCompleters.contains(str));
164	assert(commandCompleters[str] == &completer); (void)completer;
165	commandCompleters.erase(str);
166	}
167
168	void GlobalCommandController::registerSetting(Setting& setting)
169	{
170	getSettingsManager().registerSetting(setting);
171	interpreter.registerSetting(setting);
172	}
173
174	void GlobalCommandController::unregisterSetting(Setting& setting)
175	{
176	interpreter.unregisterSetting(setting);
177	getSettingsManager().unregisterSetting(setting);
178	}
179
180	static std::vector<std::string> split(std::string_view str, const char delimiter)
181	{
182	std::vector<std::string> tokens;
183
184	enum class ParseState : uint8_t {Alpha, BackSlash, Quote};
185	using enum ParseState;
186	ParseState state = Alpha;
187
188	for (auto chr : str) {
189	switch (state) {
190	case Alpha:
191	if (tokens.empty()) {
192	tokens.emplace_back();
193	}
194	if (chr == delimiter) {
195	// token done, start new token
196	tokens.emplace_back();
197	} else {
198	tokens.back() += chr;
199	if (chr == '\\') {
200	state = BackSlash;
201	} else if (chr == '"') {
202	state = Quote;
203	}
204	}
205	break;
206	case Quote:
207	tokens.back() += chr;
208	if (chr == '"') {
209	state = Alpha;
210	}
211	break;
212	case BackSlash:
213	tokens.back() += chr;
214	state = Alpha;
215	break;
216	}
217	}
218	return tokens;
219	}
220
221	static std::string removeEscaping(const std::string& str)
222	{
223	enum class ParseState : uint8_t {Alpha, BackSlash, Quote};
224	using enum ParseState;
225	ParseState state = Alpha;
226
227	std::string result;
228	for (auto chr : str) {
229	switch (state) {
230	case Alpha:
231	if (chr == '\\') {
232	state = BackSlash;
233	} else if (chr == '"') {
234	state = Quote;
235	} else {
236	result += chr;
237	}
238	break;
239	case Quote:
240	if (chr == '"') {
241	state = Alpha;
242	} else {
243	result += chr;
244	}
245	break;
246	case BackSlash:
247	result += chr;
248	state = Alpha;
249	break;
250	}
251	}
252	return result;
253	}
254
255	static std::vector<std::string> removeEscaping(std::span<const std::string> input, bool keepLastIfEmpty)
256	{
257	std::vector<std::string> result;
258	for (const auto& s : input) {
259	if (!s.empty()) {
260	result.push_back(removeEscaping(s));
261	}
262	}
263	if (keepLastIfEmpty && (input.empty() \|\| input.back().empty())) {
264	result.emplace_back();
265	}
266	return result;
267	}
268
269	static std::string escapeChars(const std::string& str, std::string_view chars)
270	{
271	std::string result;
272	for (auto chr : str) {
273	if (chars.contains(chr)) {
274	result += '\\';
275	}
276	result += chr;
277	}
278	return result;
279	}
280
281	static std::string addEscaping(const std::string& str, bool quote, bool finished)
282	{
283	if (str.empty() && finished) {
284	quote = true;
285	}
286	std::string result = escapeChars(str, "$[]");
287	if (quote) {
288	result.insert(result.begin(), '"');
289	if (finished) {
290	result += '"';
291	}
292	} else {
293	result = escapeChars(result, " ");
294	}
295	return result;
296	}
297
298	bool GlobalCommandController::isComplete(zstring_view command)
299	{
300	return interpreter.isComplete(command);
301	}
302
303	TclObject GlobalCommandController::executeCommand(
304	zstring_view command, CliConnection* connection_)
305	{
306	ScopedAssign sa(connection, connection_);
307	return interpreter.execute(command);
308	}
309
310	void GlobalCommandController::source(const std::string& script)
311	{
312	try {
313	LocalFileReference file(script);
314	interpreter.executeFile(file.getFilename());
315	} catch (CommandException& e) {
316	getCliComm().printWarning(
317	"While executing ", script, ": ", e.getMessage());
318	}
319	}
320
321	static std::string tabCompletionImpl(std::string_view command, Interpreter& interpreter, function_ref<void(std::vector<std::string>&)> action)
322	{
323	// split on 'active' command (the command that should actually be
324	// completed). Some examples:
325	// if {[debug rea<tab> <-- should complete the 'debug' command
326	// instead of the 'if' command
327	// bind F6 { cycl<tab> <-- should complete 'cycle' instead of 'bind'
328	TclParser parser = interpreter.parse(command);
329	int last = parser.getLast();
330	std::string_view pre = command.substr(0, last);
331	std::string_view post = command.substr(last);
332
333	// split command string in tokens
334	std::vector<std::string> originalTokens = split(post, ' ');
335	if (originalTokens.empty()) {
336	originalTokens.emplace_back();
337	}
338
339	// complete last token
340	auto tokens = removeEscaping(originalTokens, true);
341	auto oldNum = tokens.size();
342	action(tokens);
343	auto newNum = tokens.size();
344	bool tokenFinished = oldNum != newNum;
345
346	// replace last token
347	std::string& original = originalTokens.back();
348	if (const std::string& completed = tokens[oldNum - 1]; !completed.empty()) {
349	bool quote = !original.empty() && (original[0] == '"');
350	original = addEscaping(completed, quote, tokenFinished);
351	}
352	if (tokenFinished) {
353	assert(newNum == (oldNum + 1));
354	assert(tokens.back().empty());
355	originalTokens.emplace_back();
356	}
357
358	// rebuild command string
359	return strCat(pre, join(originalTokens, ' '));
360	}
361
362	std::string GlobalCommandController::tabCompletion(std::string_view command)
363	{
364	return tabCompletionImpl(command, interpreter, [&](std::vector<std::string>& tokens) {
365	tabCompletion(tokens);
366	});
367	}
368
369	std::string GlobalCommandController::tabCompletionReplace(std::string_view command, const CompletionCandidate& replacement)
370	{
371	return tabCompletionImpl(command, interpreter, [&](std::vector<std::string>& tokens) {
372	assert(!tokens.empty());
373	tokens.back() = replacement.text;
374	if (!replacement.partial) {
375	tokens.emplace_back();
376	}
377	});
378	}
379
380	void GlobalCommandController::tabCompletion(std::vector<std::string>& tokens)
381	{
382	if (tokens.empty()) {
383	// nothing typed yet
384	return;
385	}
386	if (tokens.size() == 1) {
387	std::string_view cmd = tokens[0];
388	std::string_view leadingNs;
389	// remove leading ::
390	if (cmd.starts_with("::")) {
391	cmd.remove_prefix(2);
392	leadingNs = "::";
393	}
394	// get current (typed) namespace
395	auto p1 = cmd.rfind("::");
396	std::string_view ns = (p1 == std::string_view::npos) ? cmd : cmd.substr(0, p1 + 2);
397
398	// build a list of all command strings
399	TclObject names = interpreter.getCommandNames();
400	std::vector<std::string> names2;
401	names2.reserve(names.size());
402	for (std::string_view n1 : names) {
403	// remove leading ::
404	if (n1.starts_with("::")) n1.remove_prefix(2);
405	// initial namespace part must match
406	if (!n1.starts_with(ns)) continue;
407	// the part following the initial namespace
408	std::string_view n2 = n1.substr(ns.size());
409	// only keep upto the next namespace portion,
410	auto p2 = n2.find("::");
411	auto n3 = (p2 == std::string_view::npos) ? n1 : n1.substr(0, ns.size() + p2 + 2);
412	// don't care about adding the same string multiple times
413	names2.push_back(strCat(leadingNs, n3));
414	}
415	Completer::completeString(tokens, names2);
416	} else {
417	std::string_view cmd = tokens.front();
418	if (cmd.starts_with("::")) cmd.remove_prefix(2); // drop leading ::
419
420	if (auto* v = lookup(commandCompleters, cmd)) {
421	(*v)->tabCompletion(tokens);
422	} else {
423	TclObject command = makeTclList("openmsx::tabcompletion");
424	command.addListElements(tokens);
425	try {
426	TclObject list = command.executeCommand(interpreter);
427	bool sensitive = true;
428	auto begin = list.begin();
429	auto end = list.end();
430	if (begin != end) {
431	if (auto back = end[-1]; back == one_of("true", "false")) {
432	--end;
433	sensitive = back == "true";
434	}
435	}
436	Completer::completeString(
437	tokens, std::ranges::subrange(begin, end), sensitive);
438	} catch (CommandException& e) {
439	cliComm.printWarning(
440	"Error while executing tab-completion "
441	"proc: ", e.getMessage());
442	}
443	}
444	}
445	}
446
447
448	// Help Command
449
450	GlobalCommandController::HelpCmd::HelpCmd(GlobalCommandController& controller_)
451	: Command(controller_, "help")
452	{
453	}
454
455	void GlobalCommandController::HelpCmd::execute(
456	std::span<const TclObject> tokens, TclObject& result)
457	{
458	auto& controller = OUTER(GlobalCommandController, helpCmd);
459	switch (tokens.size()) {
460	case 1: {
461	std::string text =
462	"Use 'help [command]' to get help for a specific command\n"
463	"The following commands exist:\n";
464	auto cmds = concat<std::string_view>(
465	std::views::keys(controller.commandCompleters),
466	getInterpreter().execute("openmsx::all_command_names_with_help"));
467	std::erase_if(cmds, [](const auto& c) { return c.contains("::"); });
468	std::ranges::sort(cmds);
469	for (auto& line : formatListInColumns(cmds)) {
470	strAppend(text, line, '\n');
471	}
472	result = text;
473	break;
474	}
475	default: {
476	if (const auto* v = lookup(controller.commandCompleters, tokens[1].getString())) {
477	result = (*v)->help(tokens.subspan(1));
478	} else {
479	TclObject command = makeTclList("openmsx::help");
480	command.addListElements(std::views::drop(tokens, 1));
481	result = command.executeCommand(getInterpreter());
482	}
483	break;
484	}
485	}
486	}
487
488	std::string GlobalCommandController::HelpCmd::help(std::span<const TclObject> /tokens/) const
489	{
490	return "prints help information for commands\n";
491	}
492
493	void GlobalCommandController::HelpCmd::tabCompletion(std::vector<std::string>& tokens) const
494	{
495	std::string front = std::move(tokens.front());
496	tokens.erase(begin(tokens));
497	auto& controller = OUTER(GlobalCommandController, helpCmd);
498	controller.tabCompletion(tokens);
499	tokens.insert(begin(tokens), std::move(front));
500	}
501
502
503	// TabCompletionCmd Command
504
505	GlobalCommandController::TabCompletionCmd::TabCompletionCmd(
506	GlobalCommandController& controller_)
507	: Command(controller_, "tabcompletion")
508	{
509	}
510
511	void GlobalCommandController::TabCompletionCmd::execute(
512	std::span<const TclObject> tokens, TclObject& result)
513	{
514	checkNumArgs(tokens, 2, "commandstring");
515	// TODO this prints list of possible completions in the console
516	auto& controller = OUTER(GlobalCommandController, tabCompletionCmd);
517	result = controller.tabCompletion(tokens[1].getString());
518	}
519
520	std::string GlobalCommandController::TabCompletionCmd::help(std::span<const TclObject> /tokens/) const
521	{
522	return "!!! This command will change in the future !!!\n"
523	"Tries to complete the given argument as if it were typed in "
524	"the console. This command is only useful to provide "
525	"tabcompletion to external console interfaces.";
526	}
527
528
529	// class UpdateCmd
530
531	GlobalCommandController::UpdateCmd::UpdateCmd(CommandController& commandController_)
532	: Command(commandController_, "openmsx_update")
533	{
534	}
535
536	static GlobalCliComm::UpdateType getType(const TclObject& name)
537	{
538	for (auto updateStr = CliComm::getUpdateStrings();
539	auto i : xrange(updateStr.size())) {
540	if (updateStr[i] == name) {
541	return static_cast<CliComm::UpdateType>(i);
542	}
543	}
544	throw CommandException("No such update type: ", name.getString());
545	}
546
547	CliConnection& GlobalCommandController::UpdateCmd::getConnection()
548	{
549	const auto& controller = OUTER(GlobalCommandController, updateCmd);
550	if (auto* c = controller.getConnection()) {
551	return *c;
552	}
553	throw CommandException("This command only makes sense when "
554	"it's used from an external application.");
555	}
556
557	void GlobalCommandController::UpdateCmd::execute(
558	std::span<const TclObject> tokens, TclObject& /result/)
559	{
560	checkNumArgs(tokens, 3, Prefix{1}, "enable\|disable type");
561	if (tokens[1] == "enable") {
562	getConnection().setUpdateEnable(getType(tokens[2]), true);
563	} else if (tokens[1] == "disable") {
564	getConnection().setUpdateEnable(getType(tokens[2]), false);
565	} else {
566	throw SyntaxError();
567	}
568	}
569
570	std::string GlobalCommandController::UpdateCmd::help(std::span<const TclObject> /tokens/) const
571	{
572	return "Enable or disable update events for external applications. See doc/openmsx-control-xml.txt.";
573	}
574
575	void GlobalCommandController::UpdateCmd::tabCompletion(std::vector<std::string>& tokens) const
576	{
577	switch (tokens.size()) {
578	case 2: {
579	using namespace std::literals;
580	static constexpr std::array ops = {"enable"sv, "disable"sv};
581	completeString(tokens, ops);
582	break;
583	}
584	case 3:
585	completeString(tokens, CliComm::getUpdateStrings());
586	break;
587	}
588	}
589
590
591	// Platform info
592
593	GlobalCommandController::PlatformInfo::PlatformInfo(InfoCommand& openMSXInfoCommand_)
594	: InfoTopic(openMSXInfoCommand_, "platform")
595	{
596	}
597
598	void GlobalCommandController::PlatformInfo::execute(
599	std::span<const TclObject> /tokens/, TclObject& result) const
600	{
601	result = TARGET_PLATFORM;
602	}
603
604	std::string GlobalCommandController::PlatformInfo::help(std::span<const TclObject> /tokens/) const
605	{
606	return "Prints openMSX platform.";
607	}
608
609	// Version info
610
611	GlobalCommandController::VersionInfo::VersionInfo(InfoCommand& openMSXInfoCommand_)
612	: InfoTopic(openMSXInfoCommand_, "version")
613	{
614	}
615
616	void GlobalCommandController::VersionInfo::execute(
617	std::span<const TclObject> /tokens/, TclObject& result) const
618	{
619	result = Version::full();
620	}
621
622	std::string GlobalCommandController::VersionInfo::help(std::span<const TclObject> /tokens/) const
623	{
624	return "Prints openMSX version.";
625	}
626
627	} // namespace openmsx

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