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dlang Buridan's
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1 changed files with 56 additions and 44 deletions
98
asino.d
98
asino.d
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@ -1,12 +1,5 @@
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/**
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/**
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Buridan's Donkey, Asino.
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Buridan's Donkey, Asino.
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...a man, being just as hungry as thirsty,
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and placed in between food and drink,
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must necessarily remain where he is and starve to death.
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- Aristole
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Copyright: Francesco Mecca
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Copyright: Francesco Mecca
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License: GPLv3
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License: GPLv3
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Author: Francesco Mecca
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Author: Francesco Mecca
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@ -18,35 +11,67 @@ import std.random;
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import std.getopt;
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import std.getopt;
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import std.file;
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import std.file;
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import std.conv;
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import std.conv;
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import std.array;
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import std.algorithm;
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extern(C)
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{
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struct pollfd { int fd; short events; short revents; }
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int poll(pollfd *fds, int nfds, int timeout);
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}
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string versionSt = "...a man, being just as hungry as thirsty,
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and placed in between food and drink,
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must necessarily remain where he is and starve to death.
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Aristole";
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void
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void
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main (string[] args)
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main (string[] args)
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{
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{
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bool num = false;
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bool num, v;
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string engine = "mt";
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string engine = "mt";
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string div;
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auto cliOpts = getopt(
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auto cliOpts = getopt(
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args,
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args,
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"numbers|n", "enable number output on screen", &num,
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"numbers|n", "enable number output on screen", &num,
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"divider|d", "divide the arguments using a different divider", &div,
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"version|v", "show version and exit", &v,
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"engine|e", "Choose the RNG between \"mt\" (Mersenne-Twister, default), \"x\" (xorshift),
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"engine|e", "Choose the RNG between \"mt\" (Mersenne-Twister, default), \"x\" (xorshift),
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\"dr\" (/dev/random), \"du\" (/dev/urandom)", &engine
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\"dr\" (/dev/random), \"du\" (/dev/urandom)", &engine
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);
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);
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if(cliOpts.helpWanted){
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if(cliOpts.helpWanted){
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defaultGetoptPrinter("Buridan's Donkey", cliOpts.options);
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defaultGetoptPrinter("Buridan's Donkey\nSort a list of strings randomly", cliOpts.options);
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return;
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return;
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} else if(v){
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writeln(versionSt);
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}
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}
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args = args[1 .. $]; // remove program name
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string[] toProcess = void;
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args.shuffle(engine);
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if(isaTTY()){
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//writeln(typeid(gen));
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// read stdin, ignore cli args
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toProcess = to!(string[])(stdin.byLine().array());
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} else {
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toProcess = args[1 .. $]; // remove program name
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}
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foreach (i, arg; args) {
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auto res = toProcess.divide(div).shuffle(engine);
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foreach (i, arg; res) {
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if (!num) writeln(arg);
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if (!num) writeln(arg);
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else writefln("%s: %s", i, arg);
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else writefln("%s: %s", i, arg);
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}
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}
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}
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}
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void shuffle(ref string[] args, string t)
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string[] divide(string[] args, string div)
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{
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if (div == "") return args;
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else return to!(string[])(args.join.splitter(div).array);
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}
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string[] shuffle(string[] args, string t)
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{
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{
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if(t == "mt"){
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if(t == "mt"){
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Mt19937 gen;
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Mt19937 gen;
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@ -65,6 +90,7 @@ void shuffle(ref string[] args, string t)
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} else {
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} else {
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throw new Exception("Wrong arguments");
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throw new Exception("Wrong arguments");
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}
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}
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return args;
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}
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}
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@ -84,38 +110,24 @@ template DevRandomGen(string gen)
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enum UIntType max = ubyte.max;
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enum UIntType max = ubyte.max;
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string src = gen;
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string src = gen;
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/**
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* Unused for /dev/random
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*/
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void seed(UIntType x0) @safe pure nothrow @nogc {}
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void seed(UIntType x0) @safe pure nothrow @nogc {}
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/**
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* Returns the current number in the random sequence.
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*/
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@property
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UIntType front() const// @safe pure nothrow @nogc
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{
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//auto a = to!UIntType("/dev/random".read(UIntType.sizeof));
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//return to!UIntType(a);
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return (cast(ubyte[])(src.read(ubyte.sizeof)))[0];
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}
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/**
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* Advances the random sequence.
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*/
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void popFront() @safe pure nothrow @nogc {}
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void popFront() @safe pure nothrow @nogc {}
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/**
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* Captures a range state.
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*/
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@property
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@property
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typeof(this) save() @safe pure nothrow @nogc
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UIntType front() const { return (cast(ubyte[])(src.read(ubyte.sizeof)))[0]; }
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@property
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typeof(this) save() @safe pure nothrow @nogc { return this; }
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}
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}
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bool isaTTY()
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{
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{
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return this;
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pollfd fds;
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}
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int ret;
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}
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fds.fd = 0;
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fds.events = 0;
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ret = poll(&fds, 1, 0);
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return ret > 0;
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}
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}
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