Austin Horstman
2355486cb3
Add a small GLib-backed helper for command stdout that integrates with the main loop instead of blocking on getline() in a worker thread. The helper keeps the existing child setup semantics used by Waybar commands, including process groups, parent-death signaling, and WAYBAR_OUTPUT_NAME propagation. This is the foundation for moving long-running custom commands away from manual poll/read logic in the module itself. Signed-off-by: Austin Horstman <khaneliman12@gmail.com>
41 lines
947 B
C++
41 lines
947 B
C++
#pragma once
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#include <glibmm/main.h>
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#include <glibmm/spawn.h>
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#include <functional>
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#include <string>
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namespace waybar::util::command {
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class LineStream {
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public:
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using OutputCallback = std::function<void(const std::string&)>;
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using ExitCallback = std::function<void(int)>;
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LineStream(std::string output_name, OutputCallback on_output, ExitCallback on_exit);
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~LineStream();
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void start(const std::string& cmd);
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void stop();
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bool running() const;
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private:
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bool handleStdout(Glib::IOCondition condition);
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void handleExit(Glib::Pid pid, int status);
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void closeStdout();
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void drainStdout(bool flush_trailing_line);
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static int statusToExitCode(int status);
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std::string output_name_;
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OutputCallback on_output_;
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ExitCallback on_exit_;
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std::string buffer_;
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Glib::Pid pid_;
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int stdout_fd_;
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sigc::connection stdout_connection_;
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sigc::connection child_connection_;
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};
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} // namespace waybar::util::command
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