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$)(int, const char *);
 326
 327 static std::string command_;
 328
 329 static int client_;
 330
 331 static CYUTF8String Run(CYPool &pool, const std::string &code) {
 332     return Run(pool, client_, code);
 333 }
 334
 335 static char **Complete(const char *word, int start, int end) {
 336     rl_attempted_completion_over = ~0;
 337     std::string line(rl_line_buffer, start);
 338     char **values(CYComplete(word, command_ + line, &Run));
 339     mode_ = Parsing;
 340     return values;
 341 }
 342
 343 // need char *, not const char *
 344 static char name_[] = "cycript";
 345 static char break_[] = " \t\n\"\\'`@><=;|&{(" ")}" ".:[]";
 346
 347 class History {
 348   private:
 349     std::string histfile_;
 350     size_t histlines_;
 351
 352   public:
 353     History(std::string histfile) :
 354         histfile_(histfile),
 355         histlines_(0)
 356     {
 357         read_history(histfile_.c_str());
 358
 359         for (HIST_ENTRY *history((history_set_pos(0), current_history())); history; history = next_history())
 360             for (char *character(history->line); *character; ++character)
 361                 if (*character == '\x01') *character = '\n';
 362     }
 363
 364     ~History() {
 365         for (HIST_ENTRY *history((history_set_pos(0), current_history())); history; history = next_history())
 366             for (char *character(history->line); *character; ++character)
 367                 if (*character == '\n') *character = '\x01';
 368
 369         if (append_history$ != NULL) {
 370             int fd(_syscall(open(histfile_.c_str(), O_CREAT | O_WRONLY, 0600)));
 371             _syscall(close(fd));
 372             _assert((*append_history$)(histlines_, histfile_.c_str()) == 0);
 373         } else {
 374             _assert(write_history(histfile_.c_str()) == 0);
 375         }
 376     }
 377
 378     void operator +=(std::string command) {
 379         add_history(command.c_str());
 380         ++histlines_;
 381     }
 382 };
 383
 384 static int CYConsoleKeyBypass(int count, int key) {
 385     rl_point = rl_end;
 386     rl_insert(count, '\n');
 387     return rl_newline(count, key);
 388 }
 389
 390 static int CYConsoleKeyReturn(int count, int key) {
 391     if (rl_point != rl_end) {
 392         if (memchr(rl_line_buffer, '\n', rl_end) == NULL)
 393             return CYConsoleKeyBypass(count, key);
 394         rl_insert(count, '\n');
 395         return 0;
 396     }
 397
 398     rl_insert(count, '\n');
 399
 400     bool done(false);
 401     if (rl_line_buffer[0] == '?')
 402         done = true;
 403     else {
 404         std::string command(rl_line_buffer, rl_end);
 405         std::istringstream stream(command);
 406
 407         size_t last(std::string::npos);
 408         for (size_t i(0); i != std::string::npos; i = command.find('\n', i + 1))
 409             ++last;
 410
 411         CYPool pool;
 412         CYDriver driver(pool, stream);
 413         if (driver.Parse() || !driver.errors_.empty())
 414             for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
 415                 if (error->location_.begin.line != last + 1)
 416                     done = true;
 417                 break;
 418             }
 419         else
 420             done = true;
 421     }
 422
 423     if (done)
 424         return rl_newline(count, key);
 425     return 0;
 426 }
 427
 428 template <typename Type_>
 429 static Type_ *CYmemrchr(Type_ *data, Type_ value, size_t size) {
 430     while (size != 0)
 431         if (data[--size] == value)
 432             return data + size;
 433     return NULL;
 434 }
 435
 436 static int CYConsoleKeyUp(int count, int key) {
 437     char *after(CYmemrchr(rl_line_buffer, '\n', rl_point));
 438     if (after == NULL) {
 439         if (int value = rl_get_previous_history(count, key))
 440             return value;
 441         return 0;
 442     }
 443
 444     char *before(CYmemrchr(rl_line_buffer, '\n', after - rl_line_buffer));
 445     if (before == NULL)
 446         before = rl_line_buffer - 1;
 447
 448     ptrdiff_t offset(rl_line_buffer + rl_point - after);
 449     if (offset > after - before)
 450         rl_point = after - 1 - rl_line_buffer;
 451     else
 452         rl_point = before + offset - rl_line_buffer;
 453
 454     return 0;
 455 }
 456
 457 static int CYConsoleKeyDown(int count, int key) {
 458     char *after(static_cast<char *>(memchr(rl_line_buffer + rl_point, '\n', rl_end - rl_point)));
 459     if (after == NULL) {
 460         if (int value = rl_get_next_history(count, key))
 461             return value;
 462         rl_point = 0;
 463         return 0;
 464     }
 465
 466     char *before(CYmemrchr(rl_line_buffer, '\n', rl_point));
 467     if (before == NULL)
 468         before = rl_line_buffer - 1;
 469
 470     ptrdiff_t offset(rl_line_buffer + rl_point - before);
 471     if (offset > rl_line_buffer + rl_end - after)
 472         rl_point = rl_end;
 473     else
 474         rl_point = after + offset - rl_line_buffer;
 475
 476     return 0;
 477 }
 478
 479 static void Console(CYOptions &options) {
 480     std::string basedir;
 481     if (const char *home = getenv("HOME"))
 482         basedir = home;
 483     else {
 484         passwd *passwd;
 485         if (const char *username = getenv("LOGNAME"))
 486             passwd = getpwnam(username);
 487         else
 488             passwd = getpwuid(getuid());
 489         basedir = passwd->pw_dir;
 490     }
 491
 492     basedir += "/.cycript";
 493     mkdir(basedir.c_str(), 0700);
 494
 495     rl_initialize();
 496     rl_readline_name = name_;
 497
 498     History history(basedir + "/history");
 499
 500     bool bypass(false);
 501     bool debug(false);
 502     bool expand(false);
 503     bool lower(true);
 504
 505     out_ = &std::cout;
 506
 507     rl_completer_word_break_characters = break_;
 508     rl_attempted_completion_function = &Complete;
 509     rl_bind_key('\t', rl_complete);
 510
 511     rl_redisplay_function = CYDisplayUpdate;
 512
 513 #if defined (__MSDOS__)
 514     rl_bind_keyseq("\033[0A", &CYConsoleKeyUp);
 515     rl_bind_keyseq("\033[0D", &CYConsoleKeyDown);
 516 #endif
 517     rl_bind_keyseq("\033[A", &CYConsoleKeyUp);
 518     rl_bind_keyseq("\033[B", &CYConsoleKeyDown);
 519     rl_bind_keyseq("\033OA", &CYConsoleKeyUp);
 520     rl_bind_keyseq("\033OB", &CYConsoleKeyDown);
 521 #if defined (__MINGW32__)
 522     rl_bind_keyseq("\340H", &CYConsoleKeyUp);
 523     rl_bind_keyseq("\340P", &CYConsoleKeyDown);
 524     rl_bind_keyseq("\\000H", &CYConsoleKeyUp);
 525     rl_bind_keyseq("\\000P", &CYConsoleKeyDown);
 526 #endif
 527
 528     struct sigaction action;
 529     sigemptyset(&action.sa_mask);
 530     action.sa_handler = &sigint;
 531     action.sa_flags = 0;
 532     sigaction(SIGINT, &action, NULL);
 533
 534     for (;;) {
 535         if (setjmp(ctrlc_) != 0) {
 536             mode_ = Working;
 537             *out_ << std::endl;
 538             continue;
 539         }
 540
 541         if (bypass) {
 542             rl_bind_key('\r', &CYConsoleKeyBypass);
 543             rl_bind_key('\n', &CYConsoleKeyBypass);
 544         } else {
 545             rl_bind_key('\r', &CYConsoleKeyReturn);
 546             rl_bind_key('\n', &CYConsoleKeyReturn);
 547         }
 548
 549         mode_ = Parsing;
 550         char *line(readline("cy# "));
 551         mode_ = Working;
 552
 553         if (line == NULL) {
 554             *out_ << std::endl;
 555             break;
 556         }
 557
 558         std::string command(line);
 559         free(line);
 560         _assert(!command.empty());
 561         _assert(command[command.size() - 1] == '\n');
 562         command.resize(command.size() - 1);
 563         if (command.empty())
 564             continue;
 565
 566         if (command[0] == '?') {
 567             std::string data(command.substr(1));
 568             if (data == "bypass") {
 569                 bypass = !bypass;
 570                 *out_ << "bypass == " << (bypass ? "true" : "false") << std::endl;
 571             } else if (data == "debug") {
 572                 debug = !debug;
 573                 *out_ << "debug == " << (debug ? "true" : "false") << std::endl;
 574             } else if (data == "destroy") {
 575                 CYDestroyContext();
 576             } else if (data == "gc") {
 577                 *out_ << "collecting... " << std::flush;
 578                 CYGarbageCollect(CYGetJSContext());
 579                 *out_ << "done." << std::endl;
 580             } else if (data == "exit") {
 581                 return;
 582             } else if (data == "expand") {
 583                 expand = !expand;
 584                 *out_ << "expand == " << (expand ? "true" : "false") << std::endl;
 585             } else if (data == "lower") {
 586                 lower = !lower;
 587                 *out_ << "lower == " << (lower ? "true" : "false") << std::endl;
 588             }
 589
 590             history += command;
 591             continue;
 592         }
 593
 594         std::string code;
 595         if (bypass)
 596             code = command;
 597         else {
 598             std::istringstream stream(command);
 599
 600             CYPool pool;
 601             CYDriver driver(pool, stream);
 602             Setup(driver);
 603
 604             if (driver.Parse() || !driver.errors_.empty()) {
 605                 for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
 606                     CYPosition begin(error->location_.begin);
 607                     CYPosition end(error->location_.end);
 608
 609                     /*if (begin.line != lines2.size()) {
 610                         std::cerr << "  | ";
 611                         std::cerr << lines2[begin.line - 1] << std::endl;
 612                     }*/
 613
 614                     std::cerr << "....";
 615                     for (size_t i(0); i != begin.column; ++i)
 616                         std::cerr << '.';
 617                     if (begin.line != end.line || begin.column == end.column)
 618                         std::cerr << '^';
 619                     else for (size_t i(0), e(end.column - begin.column); i != e; ++i)
 620                         std::cerr << '^';
 621                     std::cerr << std::endl;
 622
 623                     std::cerr << "  | ";
 624                     std::cerr << error->message_ << std::endl;
 625
 626                     history += command;
 627                     break;
 628                 }
 629
 630                 continue;
 631             }
 632
 633             if (driver.script_ == NULL)
 634                 continue;
 635
 636             std::stringbuf str;
 637             CYOutput out(str, options);
 638             Setup(out, driver, options, lower);
 639             out << *driver.script_;
 640             code = str.str();
 641         }
 642
 643         history += command;
 644
 645         if (debug) {
 646             std::cout << "cy= ";
 647             CYLexerHighlight(code.c_str(), code.size(), std::cout);
 648             std::cout << std::endl;
 649         }
 650
 651         CYPool pool;
 652         Output(Run(pool, client_, code), &std::cout, expand);
 653     }
 654 }
 655
 656 void InjectLibrary(pid_t, int, const char *const []);
 657
 658 static uint64_t CYGetTime() {
 659 #ifdef __APPLE__
 660     return mach_absolute_time();
 661 #else
 662     struct timespec spec;
 663     clock_gettime(CLOCK_MONOTONIC, &spec);
 664     return spec.tv_sec * UINT64_C(1000000000) + spec.tv_nsec;
 665 #endif
 666 }
 667
 668 int Main(int argc, char * const argv[], char const * const envp[]) {
 669     bool tty(isatty(STDIN_FILENO));
 670     bool compile(false);
 671     bool target(false);
 672     CYOptions options;
 673
 674     append_history$ = (int (*)(int, const char *)) (dlsym(RTLD_DEFAULT, "append_history"));
 675
 676 #ifdef CY_ATTACH
 677     pid_t pid(_not(pid_t));
 678 #endif
 679
 680     const char *host(NULL);
 681     const char *port(NULL);
 682
 683     optind = 1;
 684
 685     for (;;) {
 686         int option(getopt_long(argc, argv,
 687             "c"
 688             "g:"
 689             "n:"
 690 #ifdef CY_ATTACH
 691             "p:"
 692 #endif
 693             "r:"
 694             "s"
 695         , (const struct option[]) {
 696             {NULL, no_argument, NULL, 'c'},
 697             {NULL, required_argument, NULL, 'g'},
 698             {NULL, required_argument, NULL, 'n'},
 699 #ifdef CY_ATTACH
 700             {NULL, required_argument, NULL, 'p'},
 701 #endif
 702             {NULL, required_argument, NULL, 'r'},
 703             {NULL, no_argument, NULL, 's'},
 704         {0, 0, 0, 0}}, NULL));
 705
 706         switch (option) {
 707             case -1:
 708                 goto getopt;
 709
 710             case ':':
 711             case '?':
 712                 fprintf(stderr,
 713                     "usage: cycript [-c]"
 714 #ifdef CY_ATTACH
 715                     " [-p <pid|name>]"
 716 #endif
 717                     " [-r <host:port>]"
 718                     " [<script> [<arg>...]]\n"
 719                 );
 720                 return 1;
 721
 722             target:
 723                 if (!target)
 724                     target = true;
 725                 else {
 726                     fprintf(stderr, "only one of -[c"
 727 #ifdef CY_ATTACH
 728                     "p"
 729 #endif
 730                     "r] may be used at a time\n");
 731                     return 1;
 732                 }
 733             break;
 734
 735             case 'c':
 736                 compile = true;
 737             goto target;
 738
 739             case 'g':
 740                 if (false);
 741                 else if (strcmp(optarg, "rename") == 0)
 742                     options.verbose_ = true;
 743                 else if (strcmp(optarg, "bison") == 0)
 744                     bison_ = true;
 745                 else if (strcmp(optarg, "timing") == 0)
 746                     timing_ = true;
 747                 else {
 748                     fprintf(stderr, "invalid name for -g\n");
 749                     return 1;
 750                 }
 751             break;
 752
 753             case 'n':
 754                 if (false);
 755                 else if (strcmp(optarg, "minify") == 0)
 756                     pretty_ = true;
 757                 else {
 758                     fprintf(stderr, "invalid name for -n\n");
 759                     return 1;
 760                 }
 761             break;
 762
 763 #ifdef CY_ATTACH
 764             case 'p': {
 765                 size_t size(strlen(optarg));
 766                 char *end;
 767
 768                 pid = strtoul(optarg, &end, 0);
 769                 if (optarg + size != end) {
 770                     // XXX: arg needs to be escaped in some horrendous way of doom
 771                     // XXX: this is a memory leak now because I just don't care enough
 772                     char *command;
 773                     int writ(asprintf(&command, "ps axc|sed -e '/^ *[0-9]/{s/^ *\\([0-9]*\\)\\( *[^ ]*\\)\\{3\\} *-*\\([^ ]*\\)/\\3 \\1/;/^%s /{s/^[^ ]* //;q;};};d'", optarg));
 774                     _assert(writ != -1);
 775
 776                     if (FILE *pids = popen(command, "r")) {
 777                         char value[32];
 778                         size = 0;
 779
 780                         for (;;) {
 781                             size_t read(fread(value + size, 1, sizeof(value) - size, pids));
 782                             if (read == 0)
 783                                 break;
 784                             else {
 785                                 size += read;
 786                                 if (size == sizeof(value))
 787                                     goto fail;
 788                             }
 789                         }
 790
 791                       size:
 792                         if (size == 0)
 793                             goto fail;
 794                         if (value[size - 1] == '\n') {
 795                             --size;
 796                             goto size;
 797                         }
 798
 799                         value[size] = '\0';
 800                         size = strlen(value);
 801                         pid = strtoul(value, &end, 0);
 802                         if (value + size != end) fail:
 803                             pid = _not(pid_t);
 804                         _syscall(pclose(pids));
 805                     }
 806
 807                     if (pid == _not(pid_t)) {
 808                         fprintf(stderr, "unable to find process `%s' using ps\n", optarg);
 809                         return 1;
 810                     }
 811                 }
 812             } goto target;
 813 #endif
 814
 815             case 'r': {
 816                 //size_t size(strlen(optarg));
 817
 818                 char *colon(strrchr(optarg, ':'));
 819                 if (colon == NULL) {
 820                     fprintf(stderr, "missing colon in hostspec\n");
 821                     return 1;
 822                 }
 823
 824                 /*char *end;
 825                 port = strtoul(colon + 1, &end, 10);
 826                 if (end != optarg + size) {
 827                     fprintf(stderr, "invalid port in hostspec\n");
 828                     return 1;
 829                 }*/
 830
 831                 host = optarg;
 832                 *colon = '\0';
 833                 port = colon + 1;
 834             } goto target;
 835
 836             case 's':
 837                 strict_ = true;
 838             break;
 839
 840             default:
 841                 _assert(false);
 842         }
 843     }
 844
 845   getopt:
 846     argc -= optind;
 847     argv += optind;
 848
 849     const char *script;
 850
 851 #ifdef CY_ATTACH
 852     if (pid != _not(pid_t) && argc > 1) {
 853         fprintf(stderr, "-p cannot set argv\n");
 854         return 1;
 855     }
 856 #endif
 857
 858     if (argc == 0)
 859         script = NULL;
 860     else {
 861 #ifdef CY_EXECUTE
 862         // XXX: const_cast?! wtf gcc :(
 863         CYSetArgs(argc - 1, const_cast<const char **>(argv + 1));
 864 #endif
 865         script = argv[0];
 866         if (strcmp(script, "-") == 0)
 867             script = NULL;
 868     }
 869
 870 #ifdef CY_ATTACH
 871     if (pid == _not(pid_t))
 872         client_ = -1;
 873     else {
 874         struct Socket {
 875             int fd_;
 876
 877             Socket(int fd) :
 878                 fd_(fd)
 879             {
 880             }
 881
 882             ~Socket() {
 883                 close(fd_);
 884             }
 885
 886             operator int() {
 887                 return fd_;
 888             }
 889         } server(_syscall(socket(PF_UNIX, SOCK_STREAM, 0)));
 890
 891         struct sockaddr_un address;
 892         memset(&address, 0, sizeof(address));
 893         address.sun_family = AF_UNIX;
 894
 895         const char *tmp;
 896 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 897         tmp = "/Library/Caches";
 898 #else
 899         tmp = "/tmp";
 900 #endif
 901
 902         sprintf(address.sun_path, "%s/.s.cy.%u", tmp, getpid());
 903         unlink(address.sun_path);
 904
 905         struct File {
 906             const char *path_;
 907
 908             File(const char *path) :
 909                 path_(path)
 910             {
 911             }
 912
 913             ~File() {
 914                 unlink(path_);
 915             }
 916         } file(address.sun_path);
 917
 918         _syscall(bind(server, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
 919         _syscall(chmod(address.sun_path, 0777));
 920
 921         _syscall(listen(server, 1));
 922         const char *const argv[] = {address.sun_path, NULL};
 923         InjectLibrary(pid, 1, argv);
 924         client_ = _syscall(accept(server, NULL, NULL));
 925     }
 926 #else
 927     client_ = -1;
 928 #endif
 929
 930     if (client_ == -1 && host != NULL && port != NULL) {
 931         struct addrinfo hints;
 932         memset(&hints, 0, sizeof(hints));
 933         hints.ai_family = AF_UNSPEC;
 934         hints.ai_socktype = SOCK_STREAM;
 935         hints.ai_protocol = 0;
 936         hints.ai_flags = 0;
 937
 938         struct addrinfo *infos;
 939         _syscall(getaddrinfo(host, port, &hints, &infos));
 940
 941         _assert(infos != NULL); try {
 942             for (struct addrinfo *info(infos); info != NULL; info = info->ai_next) {
 943                 int client(_syscall(socket(info->ai_family, info->ai_socktype, info->ai_protocol))); try {
 944                     _syscall(connect(client, info->ai_addr, info->ai_addrlen));
 945                     client_ = client;
 946                     break;
 947                 } catch (...) {
 948                     _syscall(close(client));
 949                     throw;
 950                 }
 951             }
 952         } catch (...) {
 953             freeaddrinfo(infos);
 954             throw;
 955         }
 956     }
 957
 958     if (script == NULL && tty)
 959         Console(options);
 960     else {
 961         std::istream *stream;
 962         if (script == NULL) {
 963             stream = &std::cin;
 964             script = "<stdin>";
 965         } else {
 966             stream = new std::fstream(script, std::ios::in | std::ios::binary);
 967             _assert(!stream->fail());
 968         }
 969
 970         if (timing_) {
 971             std::stringbuf buffer;
 972             stream->get(buffer, '\0');
 973             _assert(!stream->fail());
 974
 975             double average(0);
 976             int samples(-50);
 977             uint64_t start(CYGetTime());
 978
 979             for (;;) {
 980                 stream = new std::istringstream(buffer.str());
 981
 982                 CYPool pool;
 983                 CYDriver driver(pool, *stream, script);
 984                 Setup(driver);
 985
 986                 uint64_t begin(CYGetTime());
 987                 driver.Parse();
 988                 uint64_t end(CYGetTime());
 989
 990                 delete stream;
 991
 992                 average += (end - begin - average) / ++samples;
 993
 994                 uint64_t now(CYGetTime());
 995                 if (samples == 0)
 996                     average = 0;
 997                 else if ((now - start) / 1000000000 >= 1)
 998                     std::cout << std::fixed << average << '\t' << (end - begin) << '\t' << samples << std::endl;
 999                 else continue;
1000
1001                 start = now;
1002             }
1003
1004             stream = new std::istringstream(buffer.str());
1005             std::cin.get();
1006         }
1007
1008         CYPool pool;
1009         CYDriver driver(pool, *stream, script);
1010         Setup(driver);
1011
1012         bool failed(driver.Parse());
1013
1014         if (failed || !driver.errors_.empty()) {
1015             for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i)
1016                 std::cerr << i->location_.begin << ": " << i->message_ << std::endl;
1017         } else if (driver.script_ != NULL) {
1018             std::stringbuf str;
1019             CYOutput out(str, options);
1020             Setup(out, driver, options, true);
1021             out << *driver.script_;
1022             std::string code(str.str());
1023             if (compile)
1024                 std::cout << code;
1025             else {
1026                 CYUTF8String json(Run(pool, client_, code));
1027                 if (CYStartsWith(json, "throw ")) {
1028                     CYLexerHighlight(json.data, json.size, std::cerr);
1029                     std::cerr << std::endl;
1030                     return 1;
1031                 }
1032             }
1033         }
1034     }
1035
1036     return 0;
1037 }
1038
1039 int main(int argc, char * const argv[], char const * const envp[]) {
1040     try {
1041         return Main(argc, argv, envp);
1042     } catch (const CYException &error) {
1043         CYPool pool;
1044         fprintf(stderr, "%s\n", error.PoolCString(pool));
1045         return 1;
1046     }
1047 }