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refactor(script): Merge back script handling

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This commit is contained in:
Michael Carlberg
2017-01-10 05:12:53 +01:00
parent 946843ff59
commit f4e8051e9e
9 changed files with 132 additions and 188 deletions
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172
src/modules/script.cpp
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@ -8,53 +8,100 @@ POLYBAR_NS
namespace modules {
template class module<script_module>;
script_module::script_module(const bar_settings& bar, string name_) : module<script_module>(bar, move(name_)) {
/**
* Construct script module by loading configuration values
* and setting up formatting objects
*/
script_module::script_module(const bar_settings& bar, string name_)
: module<script_module>(bar, move(name_)), m_handler([&]() -> function<chrono::duration<double>()> {
// Handler for continuous tail commands {{{
if (m_conf.get(name(), "tail", false)) {
return [&] {
if (!m_command || !m_command->is_running()) {
string exec{string_util::replace_all(m_exec, "%counter%", to_string(++m_counter))};
m_log.info("%s: Invoking shell command: \"%s\"", name(), exec);
m_command = command_util::make_command(exec);
try {
m_command->exec(false);
} catch (const exception& err) {
m_log.err("%s: %s", name(), err.what());
throw module_error("Failed to execute command, stopping module...");
}
}
if (io_util::poll(m_command->get_stdout(PIPE_READ), POLLIN, 0)) {
if ((m_output = m_command->readline()) != m_prev) {
m_prev = m_output;
broadcast();
}
}
if (m_command && !m_command->is_running()) {
return std::max(m_command->get_exit_status() == 0 ? m_interval : 1s, m_interval);
} else {
return m_interval;
}
};
}
// }}}
// Handler for basic shell commands {{{
return [&] {
try {
auto exec = string_util::replace_all(m_exec, "%counter%", to_string(++m_counter));
m_log.info("%s: Invoking shell command: \"%s\"", name(), exec);
m_command = command_util::make_command(exec);
m_command->exec(true);
} catch (const exception& err) {
m_log.err("%s: %s", name(), err.what());
throw module_error("Failed to execute command, stopping module...");
}
if ((m_output = m_command->readline()) != m_prev) {
broadcast();
m_prev = m_output;
}
return std::max(m_command->get_exit_status() == 0 ? m_interval : 1s, m_interval);
};
// }}}
}()) {
// Load configuration values
m_exec = m_conf.get(name(), "exec", m_exec);
m_exec_if = m_conf.get(name(), "exec-if", m_exec_if);
m_maxlen = m_conf.get(name(), "maxlen", m_maxlen);
m_ellipsis = m_conf.get(name(), "ellipsis", m_ellipsis);
m_interval = m_conf.get<decltype(m_interval)>(name(), "interval", 5s);
m_conf.warn_deprecated(
name(), "maxlen", "\"format = <label>\" and \"label = %output:0:" + to_string(m_maxlen) + "%\"");
// Load configured click handlers
m_actions[mousebtn::LEFT] = m_conf.get(name(), "click-left", ""s);
m_actions[mousebtn::MIDDLE] = m_conf.get(name(), "click-middle", ""s);
m_actions[mousebtn::RIGHT] = m_conf.get(name(), "click-right", ""s);
m_actions[mousebtn::SCROLL_UP] = m_conf.get(name(), "scroll-up", ""s);
m_actions[mousebtn::SCROLL_DOWN] = m_conf.get(name(), "scroll-down", ""s);
m_formatter->add(DEFAULT_FORMAT, TAG_LABEL, {TAG_OUTPUT, TAG_LABEL});
// Setup formatting
m_formatter->add(DEFAULT_FORMAT, TAG_LABEL, {TAG_LABEL});
if (m_formatter->has(TAG_LABEL)) {
m_label = load_optional_label(m_conf, name(), "label", "%output%");
} else if (m_formatter->has(TAG_OUTPUT)) {
m_log.warn("%s: The format tag <output> is deprecated, use <label> instead", name());
}
}
/**
* Start the module worker
*/
void script_module::start() {
m_mainthread = thread([this] {
m_mainthread = thread([&] {
try {
while (running() && !m_stopping) {
std::unique_lock<mutex> guard(m_updatelock);
// Execute the condition command if specified
if (!m_exec_if.empty() && command_util::make_command(m_exec_if)->exec(true) != 0) {
if (!m_output.empty()) {
broadcast();
m_output.clear();
m_prev.clear();
}
if (m_interval >= 1s) {
sleep(m_interval);
} else {
sleep(1s);
}
if (check_condition()) {
sleep(process(m_handler));
} else if (m_interval > 1s) {
sleep(m_interval);
} else {
this->process();
this->sleep(this->sleep_duration());
sleep(1s);
}
}
} catch (const exception& err) {
@ -63,22 +110,50 @@ namespace modules {
});
}
/**
* Stop the module worker by terminating any running commands
*/
void script_module::stop() {
std::lock_guard<mutex> guard(m_updatelock, std::adopt_lock);
std::lock_guard<decltype(m_handler)> guard(m_handler);
m_stopping = true;
this->wakeup();
wakeup();
if (m_command) {
if (m_command->is_running()) {
m_log.warn("%s: Stopping shell command", name());
}
if (m_command && m_command->is_running()) {
m_log.warn("%s: Stopping shell command", name());
m_command->terminate();
}
this->module::stop();
m_command.reset();
module::stop();
}
/**
* Check if defined condition is met
*/
bool script_module::check_condition() {
if (m_exec_if.empty()) {
return true;
} else if (command_util::make_command(m_exec_if)->exec(true) == 0) {
return true;
} else if (!m_output.empty()) {
broadcast();
m_output.clear();
m_prev.clear();
}
return false;
}
/**
* Process mutex wrapped script handler
*/
chrono::duration<double> script_module::process(const decltype(m_handler) & handler) const {
std::lock_guard<decltype(handler)> guard(handler);
return handler();
}
/**
* Generate module output
*/
string script_module::get_output() {
if (m_output.empty()) {
return "";
@ -89,30 +164,24 @@ namespace modules {
m_label->replace_token("%output%", m_output);
}
if (m_maxlen > 0 && m_output.length() > m_maxlen) {
m_output.erase(m_maxlen);
m_output += m_ellipsis ? "..." : "";
}
auto counter_str = to_string(m_counter);
string cnt{to_string(m_counter)};
string output{module::get_output()};
if (!m_actions[mousebtn::LEFT].empty()) {
m_builder->cmd(mousebtn::LEFT, string_util::replace_all(m_actions[mousebtn::LEFT], "%counter%", counter_str));
m_builder->cmd(mousebtn::LEFT, string_util::replace_all(m_actions[mousebtn::LEFT], "%counter%", cnt));
}
if (!m_actions[mousebtn::MIDDLE].empty()) {
m_builder->cmd(mousebtn::MIDDLE, string_util::replace_all(m_actions[mousebtn::MIDDLE], "%counter%", counter_str));
m_builder->cmd(mousebtn::MIDDLE, string_util::replace_all(m_actions[mousebtn::MIDDLE], "%counter%", cnt));
}
if (!m_actions[mousebtn::RIGHT].empty()) {
m_builder->cmd(mousebtn::RIGHT, string_util::replace_all(m_actions[mousebtn::RIGHT], "%counter%", counter_str));
m_builder->cmd(mousebtn::RIGHT, string_util::replace_all(m_actions[mousebtn::RIGHT], "%counter%", cnt));
}
if (!m_actions[mousebtn::SCROLL_UP].empty()) {
m_builder->cmd(
mousebtn::SCROLL_UP, string_util::replace_all(m_actions[mousebtn::SCROLL_UP], "%counter%", counter_str));
m_builder->cmd(mousebtn::SCROLL_UP, string_util::replace_all(m_actions[mousebtn::SCROLL_UP], "%counter%", cnt));
}
if (!m_actions[mousebtn::SCROLL_DOWN].empty()) {
m_builder->cmd(
mousebtn::SCROLL_DOWN, string_util::replace_all(m_actions[mousebtn::SCROLL_DOWN], "%counter%", counter_str));
mousebtn::SCROLL_DOWN, string_util::replace_all(m_actions[mousebtn::SCROLL_DOWN], "%counter%", cnt));
}
m_builder->append(output);
@ -120,10 +189,11 @@ namespace modules {
return m_builder->flush();
}
/**
* Output format tags
*/
bool script_module::build(builder* builder, const string& tag) const {
if (tag == TAG_OUTPUT) {
builder->node(m_output);
} else if (tag == TAG_LABEL) {
if (tag == TAG_LABEL) {
builder->node(m_label);
} else {
return false;