Changeset - r27656:6297ce3215a7
[Not reviewed]
master
0 2 0
Rubidium - 12 months ago 2023-06-21 18:04:59
rubidium@openttd.org
Codechange: use std::string/std::vector over stredup/strecpy/CallocT/free
2 files changed with 22 insertions and 27 deletions:
0 comments (0 inline, 0 general)
src/music/extmidi.cpp
Show inline comments
 
@@ -49,37 +49,25 @@ const char *MusicDriver_ExtMidi::Start(c
 
	if (StrEmpty(command)) command = EXTERNAL_PLAYER " " MIDI_ARG;
 
#endif
 

	
 
	/* Count number of arguments, but include 3 extra slots: 1st for command, 2nd for song title, and 3rd for terminating nullptr. */
 
	uint num_args = 3;
 
	for (const char *t = command; *t != '\0'; t++) if (*t == ' ') num_args++;
 

	
 
	this->params = CallocT<char *>(num_args);
 
	this->params[0] = stredup(command);
 
	this->command_tokens.clear();
 

	
 
	/* Replace space with \0 and add next arg to params */
 
	uint p = 1;
 
	while (true) {
 
		this->params[p] = strchr(this->params[p - 1], ' ');
 
		if (this->params[p] == nullptr) break;
 
	std::string_view view = command;
 
	for (;;) {
 
		auto pos = view.find(' ');
 
		this->command_tokens.emplace_back(view.substr(0, pos));
 

	
 
		this->params[p][0] = '\0';
 
		this->params[p]++;
 
		p++;
 
		if (pos == std::string_view::npos) break;
 
		view.remove_prefix(pos + 1);
 
	}
 

	
 
	/* Last parameter is the song file. */
 
	this->params[p] = this->song;
 

	
 
	this->song[0] = '\0';
 
	this->song.clear();
 
	this->pid = -1;
 
	return nullptr;
 
}
 

	
 
void MusicDriver_ExtMidi::Stop()
 
{
 
	free(params[0]);
 
	free(params);
 
	this->song[0] = '\0';
 
	this->song.clear();
 
	this->DoStop();
 
}
 

	
 
@@ -87,14 +75,14 @@ void MusicDriver_ExtMidi::PlaySong(const
 
{
 
	std::string filename = MidiFile::GetSMFFile(song);
 
	if (!filename.empty()) {
 
		strecpy(this->song, filename.c_str(), lastof(this->song));
 
		this->song = std::move(filename);
 
		this->DoStop();
 
	}
 
}
 

	
 
void MusicDriver_ExtMidi::StopSong()
 
{
 
	this->song[0] = '\0';
 
	this->song.clear();
 
	this->DoStop();
 
}
 

	
 
@@ -103,7 +91,7 @@ bool MusicDriver_ExtMidi::IsSongPlaying(
 
	if (this->pid != -1 && waitpid(this->pid, nullptr, WNOHANG) == this->pid) {
 
		this->pid = -1;
 
	}
 
	if (this->pid == -1 && this->song[0] != '\0') this->DoPlay();
 
	if (this->pid == -1 && !this->song.empty()) this->DoPlay();
 
	return this->pid != -1;
 
}
 

	
 
@@ -120,7 +108,14 @@ void MusicDriver_ExtMidi::DoPlay()
 
			close(0);
 
			int d = open("/dev/null", O_RDONLY);
 
			if (d != -1 && dup2(d, 1) != -1 && dup2(d, 2) != -1) {
 
				execvp(this->params[0], this->params);
 
				/* execvp is nasty as it *allows* the passed parameters to be written
 
				 * for backward compatibility, however we are a fork so do not care. */
 
				std::vector<char *> parameters;
 
				for (auto &token : this->command_tokens) parameters.emplace_back(token.data());
 
				parameters.emplace_back(this->song.data());
 
				parameters.emplace_back(nullptr);
 

	
 
				execvp(parameters[0], parameters.data());
 
			}
 
			_exit(1);
 
		}
src/music/extmidi.h
Show inline comments
 
@@ -14,8 +14,8 @@
 

	
 
class MusicDriver_ExtMidi : public MusicDriver {
 
private:
 
	char **params;
 
	char song[MAX_PATH];
 
	std::vector<std::string> command_tokens;
 
	std::string song;
 
	pid_t pid;
 

	
 
	void DoPlay();
0 comments (0 inline, 0 general)