From f5d9fe6211bd397deb0ac19b634f551edfa0f6b8 Mon Sep 17 00:00:00 2001
From: Loic Guegan <manzerbredes@mailbox.org>
Date: Sun, 30 Jan 2022 20:19:02 +0100
Subject: Initialize project

---
 src/UCI.cpp | 281 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 281 insertions(+)
 create mode 100644 src/UCI.cpp

(limited to 'src/UCI.cpp')

diff --git a/src/UCI.cpp b/src/UCI.cpp
new file mode 100644
index 0000000..7318f81
--- /dev/null
+++ b/src/UCI.cpp
@@ -0,0 +1,281 @@
+#include "UCI.hpp"
+
+namespace uciadapter {
+
+Info::Info()
+    : depth(-1), seldepth(-1), multipv(-1), score_cp(-1), score_mate(-1),
+      score_lowerbound(-1), score_upperbound(-1), cp(-1), nodes(-1), nps(-1),
+      tbhits(-1), time(-1), hashfull(-1), cpuload(-1), currmovenumber(-1)
+
+{}
+
+Go::Go()
+    : wtime(-1), btime(-1), winc(-1), binc(-1), movestogo(-1), depth(-1),
+      nodes(-1), mate(-1), movetime(-1), infinite(false) {}
+
+UCI::UCI(std::string engine_path) {
+  INIT_PROCESS(p);
+  p->Start(engine_path);
+  // Init UCI
+  p->Write("uci\n");
+  uciok = false;
+  registration_required = false;
+  copyprotection_failed = false;
+  registered = false;
+  Sync();
+  if (!uciok) {
+    throw EngineError("failed to start engine in uci mode");
+  }
+  Sync(); // Check copy protection
+  if (copyprotection_failed) {
+    throw EngineError("Copy protection check failed");
+  }
+}
+
+UCI::~UCI() {
+  p->Kill();
+  delete p;
+}
+
+void UCI::Sync() {
+  p->Write("isready\n");
+  bool readyok = false;
+  std::string token;
+  while (!readyok) {
+    std::istringstream iss(p->ReadLine());
+    buffer += iss.str();
+    while (iss >> token) {
+      if (token == "readyok") {
+        readyok = true;
+      } else if (token == "uciok") {
+        uciok = true;
+      } else if (token == "id") {
+        ParseId(iss.str());
+      } else if (token == "option") {
+        ParseOption(iss.str());
+      } else if (token == "copyprotection") {
+        iss >> token;
+        if (token == "error") {
+          copyprotection_failed = true;
+        } else if (token == "ok") {
+          registered = true;
+        }
+      } else if (token == "registration") {
+        if (iss.str() == "registration error\n")
+          registration_required = true;
+      } else if (token == "bestmove") {
+        iss >> token;
+        bestmove = token;
+        iss >> token;
+        if (token == "ponder") {
+          iss >> token;
+          ponder = token;
+        }
+      } else if (token == "info") {
+        ParseInfo(iss.str());
+      }
+    }
+  }
+}
+
+void UCI::Command(std::string cmd) {
+  p->Write(cmd + "\n");
+  Sync();
+}
+
+bool UCI::IsRegistered() { return (registered); }
+
+void UCI::SyncAfter(int ms) {
+  if (ms <= 0) {
+    Sync();
+  } else {
+    std::this_thread::sleep_for(std::chrono::milliseconds(ms));
+    Sync();
+  }
+}
+
+void UCI::ParseInfo(std::string line) {
+  Info info;
+  std::istringstream iss(line);
+  std::string token;
+  while (iss >> token) {
+    if (token == "depth") {
+      iss >> info.depth;
+    } else if (token == "string") {
+      std::string line;
+      while (iss >> token) {
+        line += token + " ";
+      }
+      line = line.substr(0, line.size() - 1); // Remove trailing space
+      infostrings.push_back(line);
+      return;
+    } else if (token == "seldepth") {
+      iss >> info.seldepth;
+    } else if (token == "refutation") {
+      while (iss >> token) {
+        refutations.push_back(token);
+      }
+      return;
+    } else if (token == "nps") {
+      iss >> info.nps;
+    } else if (token == "multipv") {
+      iss >> info.multipv;
+    } else if (token == "nodes") {
+      iss >> info.nodes;
+    } else if (token == "time") {
+      iss >> info.time;
+    } else if (token == "tbhits") {
+      iss >> info.tbhits;
+    } else if (token == "hashfull") {
+      iss >> info.hashfull;
+    } else if (token == "cpuload") {
+      iss >> info.cpuload;
+    } else if (token == "currmove") {
+      iss >> info.currmove;
+    } else if (token == "currmovenumber") {
+      iss >> info.currmovenumber;
+    } else if (token == "score") {
+      iss >> token;
+      if (token == "cp") {
+        iss >> info.score_cp;
+      } else if (token == "mate") {
+        iss >> info.score_mate;
+      } else if (token == "lowerbound") {
+        iss >> info.score_lowerbound;
+      } else if (token == "upperbound") {
+        iss >> info.score_upperbound;
+      }
+    } else if (token == "pv") {
+      while (iss >> token) {
+        info.pv.push_back(token);
+      }
+    }
+  }
+
+  // Save line
+  if (info.pv.size() > 0) {
+    lines[info.multipv] = info;
+  }
+}
+
+std::vector<std::string> UCI::GetInfoStrings() { return (infostrings); }
+void UCI::ParseOption(std::string line) {
+  std::istringstream iss(line);
+  std::string token;
+  Option opt;
+  iss >> token; // option token
+  std::string *entry = NULL;
+  while (iss) {
+    if (token == "name") {
+      entry = &opt.name;
+    } else if (token == "type") {
+      entry = &opt.type;
+    } else if (token == "default") {
+      entry = &opt.default_value;
+    } else if (token == "min") {
+      entry = &opt.min;
+    } else if (token == "max") {
+      entry = &opt.max;
+    } else if (token == "var") {
+      entry = &opt.var;
+    } else {
+      iss >> token;
+    }
+    if (entry != NULL) {
+      iss >> token;
+      while (!IS_OPT_PARAM(token) && iss) {
+        (*entry) += token + " ";
+        iss >> token;
+      }
+      *entry = entry->substr(0, entry->size() - 1); // Remove trailing space
+      entry = NULL;
+    }
+  }
+  options.push_back(opt);
+}
+
+void UCI::ParseId(std::string line) {
+  std::istringstream iss(line);
+  std::string token;
+  iss >> token; // id
+  iss >> token; // name or author
+  if (token == "name") {
+    while (iss >> token) {
+      name += token + " ";
+    }
+    name = name.substr(0, name.size() - 1);
+  } else {
+    while (iss >> token) {
+      author += token + " ";
+    }
+    author = author.substr(0, author.size() - 1);
+  }
+}
+
+std::unordered_map<int, Info> UCI::GetLines() { return (lines); }
+std::vector<Option> UCI::GetOptions() { return (options); }
+std::string UCI::GetName() { return (name); }
+std::string UCI::GetAuthor() { return (author); }
+std::string UCI::GetBuffer() { return (buffer); }
+std::string UCI::GetBestMove() { return (bestmove); }
+
+bool UCI::IsRegistrationRequired() { return (registration_required); }
+
+void UCI::register_now(std::string name, std::string code) {
+  Command("register name " + name + " code " + code);
+}
+void UCI::register_later() { Command("register later"); }
+void UCI::stop() { Command("stop"); }
+void UCI::setoption(std::string name, std::string value) {
+  Command("setoption name " + name + " value " + value);
+}
+void UCI::debug(bool d) {
+  if (d) {
+    Command("debug on");
+  } else {
+    Command("debug off");
+  }
+}
+void UCI::ponderhit() { Command("ponderhit"); }
+void UCI::quit() { Command("quit"); }
+void UCI::ucinewgame() { Command("ucinewgame"); }
+void UCI::position(std::string fen, std::string moves) {
+  position(fen + " moves " + moves);
+}
+void UCI::position(std::string fen) { Command("position fen " + fen); }
+
+void UCI::go(Go go) {
+  // Flush data
+  bestmove = "";
+  ponder = "";
+  infostrings.clear();
+  lines.clear();
+  refutations.clear();
+
+  std::string cmd = "go";
+  if (go.searchmoves.size() > 0)
+    cmd += " searchmoves " + go.searchmoves;
+  if (go.ponder.size() > 0)
+    cmd += " ponder " + go.ponder;
+  if (go.wtime >= 0)
+    cmd += " wtime " + std::to_string(go.wtime);
+  if (go.btime >= 0)
+    cmd += " btime " + std::to_string(go.btime);
+  if (go.winc >= 0)
+    cmd += " winc " + std::to_string(go.winc);
+  if (go.binc >= 0)
+    cmd += " binc " + std::to_string(go.binc);
+  if (go.movestogo >= 0)
+    cmd += " movestogo " + std::to_string(go.movestogo);
+  if (go.depth >= 0)
+    cmd += " depth " + std::to_string(go.depth);
+  if (go.mate >= 0)
+    cmd += " mate " + std::to_string(go.mate);
+  if (go.movetime >= 0)
+    cmd += " movetime " + std::to_string(go.movetime);
+  if (go.infinite) {
+    cmd += " infinite";
+  }
+  Command(cmd);
+}
+} // namespace uciadapter
\ No newline at end of file
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