Console.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2015  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU Affero General Public License, Version 3 {{{ */
   6 /*
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "cycript.hpp"
  23
  24 #ifdef CY_EXECUTE
  25 #include "JavaScript.hpp"
  26 #endif
  27
  28 #include <cstdio>
  29 #include <complex>
  30 #include <fstream>
  31 #include <sstream>
  32
  33 #ifdef HAVE_READLINE_H
  34 #include <readline.h>
  35 #else
  36 #include <readline/readline.h>
  37 #endif
  38
  39 #ifdef HAVE_HISTORY_H
  40 #include <history.h>
  41 #else
  42 #include <readline/history.h>
  43 #endif
  44
  45 #include <errno.h>
  46 #include <getopt.h>
  47 #include <setjmp.h>
  48 #include <signal.h>
  49 #include <unistd.h>
  50
  51 #include <sys/socket.h>
  52 #include <sys/types.h>
  53 #include <sys/stat.h>
  54 #include <fcntl.h>
  55 #include <netdb.h>
  56
  57 #include <sys/ioctl.h>
  58 #include <sys/types.h>
  59 #include <sys/socket.h>
  60 #include <netinet/in.h>
  61 #include <sys/un.h>
  62
  63 #include <dlfcn.h>
  64 #include <pwd.h>
  65 #include <term.h>
  66
  67 #ifdef __APPLE__
  68 #include <mach/mach_time.h>
  69 #endif
  70
  71 #include "Driver.hpp"
  72 #include "Error.hpp"
  73 #include "Highlight.hpp"
  74 #include "Syntax.hpp"
  75
  76 extern "C" int rl_display_fixed;
  77 extern "C" int _rl_vis_botlin;
  78 extern "C" int _rl_last_c_pos;
  79 extern "C" int _rl_last_v_pos;
  80
  81 typedef std::complex<int> CYCursor;
  82
  83 static CYCursor current_;
  84 static int width_;
  85 static size_t point_;
  86
  87 unsigned CYDisplayWidth() {
  88     struct winsize info;
  89     if (ioctl(1, TIOCGWINSZ, &info) != -1)
  90         return info.ws_col;
  91     return tgetnum(const_cast<char *>("co"));
  92 }
  93
  94 void CYDisplayOutput_(bool display, const char *&data) {
  95     for (;; ++data) {
  96         char next(*data);
  97         if (next == '\0' || next == CYIgnoreEnd)
  98             return;
  99         if (display)
 100             putchar(next);
 101     }
 102 }
 103
 104 CYCursor CYDisplayOutput(bool display, int width, const char *data, ssize_t offset = 0) {
 105     CYCursor point(current_);
 106
 107     for (;;) {
 108         if (offset-- == 0)
 109             point = current_;
 110         switch (char next = *data++) {
 111             case '\0':
 112                 return point;
 113             break;
 114
 115             case CYIgnoreStart:
 116                 CYDisplayOutput_(display, data);
 117             case CYIgnoreEnd:
 118                 ++offset;
 119             break;
 120
 121             default:
 122                 if (display)
 123                     putchar(next);
 124                 current_ += CYCursor(0, 1);
 125                 if (current_.imag() != width)
 126                     break;
 127                 current_ = CYCursor(current_.real() + 1, 0);
 128                 if (display)
 129                     putp(clr_eos);
 130             break;
 131
 132             case '\n':
 133                 current_ = CYCursor(current_.real() + 1, 4);
 134                 if (display) {
 135                     putp(clr_eol);
 136                     putchar('\n');
 137                     putchar(' ');
 138                     putchar(' ');
 139                     putchar(' ');
 140                     putchar(' ');
 141                 }
 142             break;
 143
 144         }
 145     }
 146 }
 147
 148 void CYDisplayMove_(char *negative, char *positive, int offset) {
 149     if (offset < 0)
 150         putp(tparm(negative, -offset));
 151     else if (offset > 0)
 152         putp(tparm(positive, offset));
 153 }
 154
 155 void CYDisplayMove(CYCursor target) {
 156     CYCursor offset(target - current_);
 157
 158     CYDisplayMove_(parm_up_cursor, parm_down_cursor, offset.real());
 159
 160     if (char *parm = tparm(column_address, target.imag()))
 161         putp(parm);
 162     else
 163         CYDisplayMove_(parm_left_cursor, parm_right_cursor, offset.imag());
 164
 165     current_ = target;
 166 }
 167
 168 void CYDisplayUpdate() {
 169     current_ = CYCursor(_rl_last_v_pos, _rl_last_c_pos);
 170
 171     const char *prompt(rl_display_prompt);
 172
 173     std::ostringstream stream;
 174     CYLexerHighlight(rl_line_buffer, rl_end, stream, true);
 175     std::string string(stream.str());
 176     const char *buffer(string.c_str());
 177
 178     int width(CYDisplayWidth());
 179     if (width_ != width) {
 180         current_ = CYCursor();
 181         CYDisplayOutput(false, width, prompt);
 182         current_ = CYDisplayOutput(false, width, buffer, point_);
 183     }
 184
 185     CYDisplayMove(CYCursor());
 186     CYDisplayOutput(true, width, prompt);
 187     CYCursor target(CYDisplayOutput(true, width, stream.str().c_str(), rl_point));
 188
 189     _rl_vis_botlin = current_.real();
 190
 191     if (current_.imag() == 0)
 192         CYDisplayOutput(true, width, " ");
 193     putp(clr_eos);
 194
 195     CYDisplayMove(target);
 196     fflush(stdout);
 197
 198     _rl_last_v_pos = current_.real();
 199     _rl_last_c_pos = current_.imag();
 200
 201     width_ = width;
 202     point_ = rl_point;
 203 }
 204
 205 static volatile enum {
 206     Working,
 207     Parsing,
 208     Running,
 209     Sending,
 210     Waiting,
 211 } mode_;
 212
 213 static jmp_buf ctrlc_;
 214
 215 static void sigint(int) {
 216     switch (mode_) {
 217         case Working:
 218             return;
 219         case Parsing:
 220             longjmp(ctrlc_, 1);
 221         case Running:
 222             CYCancel();
 223             return;
 224         case Sending:
 225             return;
 226         case Waiting:
 227             return;
 228     }
 229 }
 230
 231 static bool bison_;
 232 static bool timing_;
 233 static bool strict_;
 234 static bool pretty_;
 235
 236 void Setup(CYDriver &driver) {
 237     if (bison_)
 238         driver.debug_ = 1;
 239     if (strict_)
 240         driver.strict_ = true;
 241 }
 242
 243 void Setup(CYOutput &out, CYDriver &driver, CYOptions &options, bool lower) {
 244     out.pretty_ = pretty_;
 245     if (lower)
 246         driver.Replace(options);
 247 }
 248
 249 static CYUTF8String Run(CYPool &pool, int client, CYUTF8String code) {
 250     const char *json;
 251     uint32_t size;
 252
 253     if (client == -1) {
 254         mode_ = Running;
 255 #ifdef CY_EXECUTE
 256         json = CYExecute(CYGetJSContext(), pool, code);
 257 #else
 258         json = NULL;
 259 #endif
 260         mode_ = Working;
 261         if (json == NULL)
 262             size = 0;
 263         else
 264             size = strlen(json);
 265     } else {
 266         mode_ = Sending;
 267         size = code.size;
 268         _assert(CYSendAll(client, &size, sizeof(size)));
 269         _assert(CYSendAll(client, code.data, code.size));
 270         mode_ = Waiting;
 271         _assert(CYRecvAll(client, &size, sizeof(size)));
 272         if (size == _not(uint32_t))
 273             json = NULL;
 274         else {
 275             char *temp(new(pool) char[size + 1]);
 276             _assert(CYRecvAll(client, temp, size));
 277             temp[size] = '\0';
 278             json = temp;
 279         }
 280         mode_ = Working;
 281     }
 282
 283     return CYUTF8String(json, size);
 284 }
 285
 286 static CYUTF8String Run(CYPool &pool, int client, const std::string &code) {
 287     return Run(pool, client, CYUTF8String(code.c_str(), code.size()));
 288 }
 289
 290 static std::ostream *out_;
 291
 292 static void Output(CYUTF8String json, std::ostream *out, bool expand = false) {
 293     const char *data(json.data);
 294     size_t size(json.size);
 295
 296     if (data == NULL || out == NULL)
 297         return;
 298
 299     if (!expand ||
 300         data[0] != '@' && data[0] != '"' && data[0] != '\'' ||
 301         data[0] == '@' && data[1] != '"' && data[1] != '\''
 302     )
 303         CYLexerHighlight(data, size, *out);
 304     else for (size_t i(0); i != size; ++i)
 305         if (data[i] != '\\')
 306             *out << data[i];
 307         else switch(data[++i]) {
 308             case '\0': goto done;
 309             case '\\': *out << '\\'; break;
 310             case '\'': *out << '\''; break;
 311             case '"': *out << '"'; break;
 312             case 'b': *out << '\b'; break;
 313             case 'f': *out << '\f'; break;
 314             case 'n': *out << '\n'; break;
 315             case 'r': *out << '\r'; break;
 316             case 't': *out << '\t'; break;
 317             case 'v': *out << '\v'; break;
 318             default: *out << '\\'; --i; break;
 319         }
 320
 321   done:
 322     *out << std::endl;
 323 }
 324
 325 int (*append_history$)(int, const char *);
 326
 327 static std::string command_;
 328
 329 static int client_;
 330
 331 static CYUTF8String Run(CYPool &pool, const std::string &code) {
 332     return Run(pool, client_, code);
 333 }
 334
 335 static char **Complete(const char *word, int start, int end) {
 336     rl_attempted_completion_over = ~0;
 337     std::string line(rl_line_buffer, start);
 338     char **values(CYComplete(word, command_ + line, &Run));
 339     return values;
 340 }
 341
 342 // need char *, not const char *
 343 static char name_[] = "cycript";
 344 static char break_[] = " \t\n\"\\'`@><=;|&{(" ")}" ".:[]";
 345
 346 class History {
 347   private:
 348     std::string histfile_;
 349     size_t histlines_;
 350
 351   public:
 352     History(std::string histfile) :
 353         histfile_(histfile),
 354         histlines_(0)
 355     {
 356         read_history(histfile_.c_str());
 357
 358         for (HIST_ENTRY *history((history_set_pos(0), current_history())); history; history = next_history())
 359             for (char *character(history->line); *character; ++character)
 360                 if (*character == '\x01') *character = '\n';
 361     }
 362
 363     ~History() {
 364         for (HIST_ENTRY *history((history_set_pos(0), current_history())); history; history = next_history())
 365             for (char *character(history->line); *character; ++character)
 366                 if (*character == '\n') *character = '\x01';
 367
 368         if (append_history$ != NULL) {
 369             int fd(_syscall(open(histfile_.c_str(), O_CREAT | O_WRONLY, 0600)));
 370             _syscall(close(fd));
 371             _assert((*append_history$)(histlines_, histfile_.c_str()) == 0);
 372         } else {
 373             _assert(write_history(histfile_.c_str()) == 0);
 374         }
 375     }
 376
 377     void operator +=(std::string command) {
 378         add_history(command.c_str());
 379         ++histlines_;
 380     }
 381 };
 382
 383 static int CYConsoleKeyReturn(int count, int key) {
 384     rl_insert(count, '\n');
 385
 386     if (rl_end != 0 && rl_point == rl_end && rl_line_buffer[0] == '?')
 387         rl_done = 1;
 388     else if (rl_point == rl_end) {
 389         std::string command(rl_line_buffer, rl_end);
 390         std::istringstream stream(command);
 391
 392         size_t last(std::string::npos);
 393         for (size_t i(0); i != std::string::npos; i = command.find('\n', i + 1))
 394             ++last;
 395
 396         CYPool pool;
 397         CYDriver driver(pool, stream);
 398         if (driver.Parse() || !driver.errors_.empty())
 399             for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
 400                 if (error->location_.begin.line != last + 1)
 401                     rl_done = 1;
 402                 break;
 403             }
 404         else
 405             rl_done = 1;
 406     }
 407
 408     if (rl_done)
 409         std::cout << std::endl;
 410     return 0;
 411 }
 412
 413 static void Console(CYOptions &options) {
 414     std::string basedir;
 415     if (const char *home = getenv("HOME"))
 416         basedir = home;
 417     else {
 418         passwd *passwd;
 419         if (const char *username = getenv("LOGNAME"))
 420             passwd = getpwnam(username);
 421         else
 422             passwd = getpwuid(getuid());
 423         basedir = passwd->pw_dir;
 424     }
 425
 426     basedir += "/.cycript";
 427     mkdir(basedir.c_str(), 0700);
 428
 429     rl_initialize();
 430     rl_readline_name = name_;
 431
 432     History history(basedir + "/history");
 433
 434     bool bypass(false);
 435     bool debug(false);
 436     bool expand(false);
 437     bool lower(true);
 438
 439     out_ = &std::cout;
 440
 441     rl_completer_word_break_characters = break_;
 442     rl_attempted_completion_function = &Complete;
 443     rl_bind_key('\t', rl_complete);
 444
 445     rl_redisplay_function = CYDisplayUpdate;
 446
 447     struct sigaction action;
 448     sigemptyset(&action.sa_mask);
 449     action.sa_handler = &sigint;
 450     action.sa_flags = 0;
 451     sigaction(SIGINT, &action, NULL);
 452
 453     for (;;) {
 454         if (setjmp(ctrlc_) != 0) {
 455             mode_ = Working;
 456             *out_ << std::endl;
 457             continue;
 458         }
 459
 460         if (bypass)
 461             rl_bind_key('\r', &rl_newline);
 462         else
 463             rl_bind_key('\r', &CYConsoleKeyReturn);
 464
 465         mode_ = Parsing;
 466         char *line(readline("cy# "));
 467         mode_ = Working;
 468
 469         if (line == NULL) {
 470             *out_ << std::endl;
 471             break;
 472         }
 473
 474         std::string command(line);
 475         free(line);
 476         _assert(!command.empty());
 477         _assert(command[command.size() - 1] == '\n');
 478         command.resize(command.size() - 1);
 479         if (command.empty())
 480             continue;
 481
 482         if (command[0] == '?') {
 483             std::string data(command.substr(1));
 484             if (data == "bypass") {
 485                 bypass = !bypass;
 486                 *out_ << "bypass == " << (bypass ? "true" : "false") << std::endl;
 487             } else if (data == "debug") {
 488                 debug = !debug;
 489                 *out_ << "debug == " << (debug ? "true" : "false") << std::endl;
 490             } else if (data == "destroy") {
 491                 CYDestroyContext();
 492             } else if (data == "gc") {
 493                 *out_ << "collecting... " << std::flush;
 494                 CYGarbageCollect(CYGetJSContext());
 495                 *out_ << "done." << std::endl;
 496             } else if (data == "exit") {
 497                 return;
 498             } else if (data == "expand") {
 499                 expand = !expand;
 500                 *out_ << "expand == " << (expand ? "true" : "false") << std::endl;
 501             } else if (data == "lower") {
 502                 lower = !lower;
 503                 *out_ << "lower == " << (lower ? "true" : "false") << std::endl;
 504             }
 505
 506             history += command;
 507             continue;
 508         }
 509
 510         std::string code;
 511         if (bypass)
 512             code = command;
 513         else {
 514             std::istringstream stream(command);
 515
 516             CYPool pool;
 517             CYDriver driver(pool, stream);
 518             Setup(driver);
 519
 520             if (driver.Parse() || !driver.errors_.empty()) {
 521                 for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
 522                     CYPosition begin(error->location_.begin);
 523                     CYPosition end(error->location_.end);
 524
 525                     /*if (begin.line != lines2.size()) {
 526                         std::cerr << "  | ";
 527                         std::cerr << lines2[begin.line - 1] << std::endl;
 528                     }*/
 529
 530                     std::cerr << "....";
 531                     for (size_t i(0); i != begin.column; ++i)
 532                         std::cerr << '.';
 533                     if (begin.line != end.line || begin.column == end.column)
 534                         std::cerr << '^';
 535                     else for (size_t i(0), e(end.column - begin.column); i != e; ++i)
 536                         std::cerr << '^';
 537                     std::cerr << std::endl;
 538
 539                     std::cerr << "  | ";
 540                     std::cerr << error->message_ << std::endl;
 541
 542                     history += command;
 543                     break;
 544                 }
 545
 546                 continue;
 547             }
 548
 549             if (driver.script_ == NULL)
 550                 continue;
 551
 552             std::stringbuf str;
 553             CYOutput out(str, options);
 554             Setup(out, driver, options, lower);
 555             out << *driver.script_;
 556             code = str.str();
 557         }
 558
 559         history += command;
 560
 561         if (debug) {
 562             std::cout << "cy= ";
 563             CYLexerHighlight(code.c_str(), code.size(), std::cout);
 564             std::cout << std::endl;
 565         }
 566
 567         CYPool pool;
 568         Output(Run(pool, client_, code), &std::cout, expand);
 569     }
 570 }
 571
 572 void InjectLibrary(pid_t, int, const char *const []);
 573
 574 static uint64_t CYGetTime() {
 575 #ifdef __APPLE__
 576     return mach_absolute_time();
 577 #else
 578     struct timespec spec;
 579     clock_gettime(CLOCK_MONOTONIC, &spec);
 580     return spec.tv_sec * UINT64_C(1000000000) + spec.tv_nsec;
 581 #endif
 582 }
 583
 584 int Main(int argc, char * const argv[], char const * const envp[]) {
 585     bool tty(isatty(STDIN_FILENO));
 586     bool compile(false);
 587     bool target(false);
 588     CYOptions options;
 589
 590     append_history$ = (int (*)(int, const char *)) (dlsym(RTLD_DEFAULT, "append_history"));
 591
 592 #ifdef CY_ATTACH
 593     pid_t pid(_not(pid_t));
 594 #endif
 595
 596     const char *host(NULL);
 597     const char *port(NULL);
 598
 599     optind = 1;
 600
 601     for (;;) {
 602         int option(getopt_long(argc, argv,
 603             "c"
 604             "g:"
 605             "n:"
 606 #ifdef CY_ATTACH
 607             "p:"
 608 #endif
 609             "r:"
 610             "s"
 611         , (const struct option[]) {
 612             {NULL, no_argument, NULL, 'c'},
 613             {NULL, required_argument, NULL, 'g'},
 614             {NULL, required_argument, NULL, 'n'},
 615 #ifdef CY_ATTACH
 616             {NULL, required_argument, NULL, 'p'},
 617 #endif
 618             {NULL, required_argument, NULL, 'r'},
 619             {NULL, no_argument, NULL, 's'},
 620         {0, 0, 0, 0}}, NULL));
 621
 622         switch (option) {
 623             case -1:
 624                 goto getopt;
 625
 626             case ':':
 627             case '?':
 628                 fprintf(stderr,
 629                     "usage: cycript [-c]"
 630 #ifdef CY_ATTACH
 631                     " [-p <pid|name>]"
 632 #endif
 633                     " [-r <host:port>]"
 634                     " [<script> [<arg>...]]\n"
 635                 );
 636                 return 1;
 637
 638             target:
 639                 if (!target)
 640                     target = true;
 641                 else {
 642                     fprintf(stderr, "only one of -[c"
 643 #ifdef CY_ATTACH
 644                     "p"
 645 #endif
 646                     "r] may be used at a time\n");
 647                     return 1;
 648                 }
 649             break;
 650
 651             case 'c':
 652                 compile = true;
 653             goto target;
 654
 655             case 'g':
 656                 if (false);
 657                 else if (strcmp(optarg, "rename") == 0)
 658                     options.verbose_ = true;
 659                 else if (strcmp(optarg, "bison") == 0)
 660                     bison_ = true;
 661                 else if (strcmp(optarg, "timing") == 0)
 662                     timing_ = true;
 663                 else {
 664                     fprintf(stderr, "invalid name for -g\n");
 665                     return 1;
 666                 }
 667             break;
 668
 669             case 'n':
 670                 if (false);
 671                 else if (strcmp(optarg, "minify") == 0)
 672                     pretty_ = true;
 673                 else {
 674                     fprintf(stderr, "invalid name for -n\n");
 675                     return 1;
 676                 }
 677             break;
 678
 679 #ifdef CY_ATTACH
 680             case 'p': {
 681                 size_t size(strlen(optarg));
 682                 char *end;
 683
 684                 pid = strtoul(optarg, &end, 0);
 685                 if (optarg + size != end) {
 686                     // XXX: arg needs to be escaped in some horrendous way of doom
 687                     // XXX: this is a memory leak now because I just don't care enough
 688                     char *command;
 689                     int writ(asprintf(&command, "ps axc|sed -e '/^ *[0-9]/{s/^ *\\([0-9]*\\)\\( *[^ ]*\\)\\{3\\} *-*\\([^ ]*\\)/\\3 \\1/;/^%s /{s/^[^ ]* //;q;};};d'", optarg));
 690                     _assert(writ != -1);
 691
 692                     if (FILE *pids = popen(command, "r")) {
 693                         char value[32];
 694                         size = 0;
 695
 696                         for (;;) {
 697                             size_t read(fread(value + size, 1, sizeof(value) - size, pids));
 698                             if (read == 0)
 699                                 break;
 700                             else {
 701                                 size += read;
 702                                 if (size == sizeof(value))
 703                                     goto fail;
 704                             }
 705                         }
 706
 707                       size:
 708                         if (size == 0)
 709                             goto fail;
 710                         if (value[size - 1] == '\n') {
 711                             --size;
 712                             goto size;
 713                         }
 714
 715                         value[size] = '\0';
 716                         size = strlen(value);
 717                         pid = strtoul(value, &end, 0);
 718                         if (value + size != end) fail:
 719                             pid = _not(pid_t);
 720                         _syscall(pclose(pids));
 721                     }
 722
 723                     if (pid == _not(pid_t)) {
 724                         fprintf(stderr, "unable to find process `%s' using ps\n", optarg);
 725                         return 1;
 726                     }
 727                 }
 728             } goto target;
 729 #endif
 730
 731             case 'r': {
 732                 //size_t size(strlen(optarg));
 733
 734                 char *colon(strrchr(optarg, ':'));
 735                 if (colon == NULL) {
 736                     fprintf(stderr, "missing colon in hostspec\n");
 737                     return 1;
 738                 }
 739
 740                 /*char *end;
 741                 port = strtoul(colon + 1, &end, 10);
 742                 if (end != optarg + size) {
 743                     fprintf(stderr, "invalid port in hostspec\n");
 744                     return 1;
 745                 }*/
 746
 747                 host = optarg;
 748                 *colon = '\0';
 749                 port = colon + 1;
 750             } goto target;
 751
 752             case 's':
 753                 strict_ = true;
 754             break;
 755
 756             default:
 757                 _assert(false);
 758         }
 759     }
 760
 761   getopt:
 762     argc -= optind;
 763     argv += optind;
 764
 765     const char *script;
 766
 767 #ifdef CY_ATTACH
 768     if (pid != _not(pid_t) && argc > 1) {
 769         fprintf(stderr, "-p cannot set argv\n");
 770         return 1;
 771     }
 772 #endif
 773
 774     if (argc == 0)
 775         script = NULL;
 776     else {
 777 #ifdef CY_EXECUTE
 778         // XXX: const_cast?! wtf gcc :(
 779         CYSetArgs(argc - 1, const_cast<const char **>(argv + 1));
 780 #endif
 781         script = argv[0];
 782         if (strcmp(script, "-") == 0)
 783             script = NULL;
 784     }
 785
 786 #ifdef CY_ATTACH
 787     if (pid == _not(pid_t))
 788         client_ = -1;
 789     else {
 790         struct Socket {
 791             int fd_;
 792
 793             Socket(int fd) :
 794                 fd_(fd)
 795             {
 796             }
 797
 798             ~Socket() {
 799                 close(fd_);
 800             }
 801
 802             operator int() {
 803                 return fd_;
 804             }
 805         } server(_syscall(socket(PF_UNIX, SOCK_STREAM, 0)));
 806
 807         struct sockaddr_un address;
 808         memset(&address, 0, sizeof(address));
 809         address.sun_family = AF_UNIX;
 810
 811         const char *tmp;
 812 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 813         tmp = "/Library/Caches";
 814 #else
 815         tmp = "/tmp";
 816 #endif
 817
 818         sprintf(address.sun_path, "%s/.s.cy.%u", tmp, getpid());
 819         unlink(address.sun_path);
 820
 821         struct File {
 822             const char *path_;
 823
 824             File(const char *path) :
 825                 path_(path)
 826             {
 827             }
 828
 829             ~File() {
 830                 unlink(path_);
 831             }
 832         } file(address.sun_path);
 833
 834         _syscall(bind(server, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
 835         _syscall(chmod(address.sun_path, 0777));
 836
 837         _syscall(listen(server, 1));
 838         const char *const argv[] = {address.sun_path, NULL};
 839         InjectLibrary(pid, 1, argv);
 840         client_ = _syscall(accept(server, NULL, NULL));
 841     }
 842 #else
 843     client_ = -1;
 844 #endif
 845
 846     if (client_ == -1 && host != NULL && port != NULL) {
 847         struct addrinfo hints;
 848         memset(&hints, 0, sizeof(hints));
 849         hints.ai_family = AF_UNSPEC;
 850         hints.ai_socktype = SOCK_STREAM;
 851         hints.ai_protocol = 0;
 852         hints.ai_flags = 0;
 853
 854         struct addrinfo *infos;
 855         _syscall(getaddrinfo(host, port, &hints, &infos));
 856
 857         _assert(infos != NULL); try {
 858             for (struct addrinfo *info(infos); info != NULL; info = info->ai_next) {
 859                 int client(_syscall(socket(info->ai_family, info->ai_socktype, info->ai_protocol))); try {
 860                     _syscall(connect(client, info->ai_addr, info->ai_addrlen));
 861                     client_ = client;
 862                     break;
 863                 } catch (...) {
 864                     _syscall(close(client));
 865                     throw;
 866                 }
 867             }
 868         } catch (...) {
 869             freeaddrinfo(infos);
 870             throw;
 871         }
 872     }
 873
 874     if (script == NULL && tty)
 875         Console(options);
 876     else {
 877         std::istream *stream;
 878         if (script == NULL) {
 879             stream = &std::cin;
 880             script = "<stdin>";
 881         } else {
 882             stream = new std::fstream(script, std::ios::in | std::ios::binary);
 883             _assert(!stream->fail());
 884         }
 885
 886         if (timing_) {
 887             std::stringbuf buffer;
 888             stream->get(buffer, '\0');
 889             _assert(!stream->fail());
 890
 891             double average(0);
 892             int samples(-50);
 893             uint64_t start(CYGetTime());
 894
 895             for (;;) {
 896                 stream = new std::istringstream(buffer.str());
 897
 898                 CYPool pool;
 899                 CYDriver driver(pool, *stream, script);
 900                 Setup(driver);
 901
 902                 uint64_t begin(CYGetTime());
 903                 driver.Parse();
 904                 uint64_t end(CYGetTime());
 905
 906                 delete stream;
 907
 908                 average += (end - begin - average) / ++samples;
 909
 910                 uint64_t now(CYGetTime());
 911                 if (samples == 0)
 912                     average = 0;
 913                 else if ((now - start) / 1000000000 >= 1)
 914                     std::cout << std::fixed << average << '\t' << (end - begin) << '\t' << samples << std::endl;
 915                 else continue;
 916
 917                 start = now;
 918             }
 919
 920             stream = new std::istringstream(buffer.str());
 921             std::cin.get();
 922         }
 923
 924         CYPool pool;
 925         CYDriver driver(pool, *stream, script);
 926         Setup(driver);
 927
 928         bool failed(driver.Parse());
 929
 930         if (failed || !driver.errors_.empty()) {
 931             for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i)
 932                 std::cerr << i->location_.begin << ": " << i->message_ << std::endl;
 933         } else if (driver.script_ != NULL) {
 934             std::stringbuf str;
 935             CYOutput out(str, options);
 936             Setup(out, driver, options, true);
 937             out << *driver.script_;
 938             std::string code(str.str());
 939             if (compile)
 940                 std::cout << code;
 941             else {
 942                 CYUTF8String json(Run(pool, client_, code));
 943                 if (CYStartsWith(json, "throw ")) {
 944                     CYLexerHighlight(json.data, json.size, std::cerr);
 945                     std::cerr << std::endl;
 946                     return 1;
 947                 }
 948             }
 949         }
 950     }
 951
 952     return 0;
 953 }
 954
 955 int main(int argc, char * const argv[], char const * const envp[]) {
 956     try {
 957         return Main(argc, argv, envp);
 958     } catch (const CYException &error) {
 959         CYPool pool;
 960         fprintf(stderr, "%s\n", error.PoolCString(pool));
 961         return 1;
 962     }
 963 }