Console.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2013  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU General Public License, Version 3 {{{ */
   6 /*
   7  * Cycript is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation, either version 3 of the License,
  10  * or (at your option) any later version.
  11  *
  12  * Cycript is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Cycript.  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 <sstream>
  30
  31 #include <setjmp.h>
  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 <sys/mman.h>
  46
  47 #include <errno.h>
  48 #include <unistd.h>
  49
  50 #include <sys/types.h>
  51 #include <sys/stat.h>
  52 #include <fcntl.h>
  53
  54 #include "Cycript.tab.hh"
  55
  56 #include <sys/types.h>
  57 #include <sys/socket.h>
  58 #include <netinet/in.h>
  59 #include <sys/un.h>
  60 #include <pwd.h>
  61
  62 #include <apr_getopt.h>
  63 #include <apr_pools.h>
  64 #include <apr_strings.h>
  65
  66 #include <dlfcn.h>
  67
  68 #include "Replace.hpp"
  69 #include "Display.hpp"
  70
  71 static volatile enum {
  72     Working,
  73     Parsing,
  74     Running,
  75     Sending,
  76     Waiting,
  77 } mode_;
  78
  79 static jmp_buf ctrlc_;
  80
  81 static void sigint(int) {
  82     switch (mode_) {
  83         case Working:
  84             return;
  85         case Parsing:
  86             longjmp(ctrlc_, 1);
  87         case Running:
  88             throw "*** Ctrl-C";
  89         case Sending:
  90             return;
  91         case Waiting:
  92             return;
  93     }
  94 }
  95
  96 #if YYDEBUG
  97 static bool bison_;
  98 #endif
  99 static bool strict_;
 100 static bool pretty_;
 101
 102 void Setup(CYDriver &driver, cy::parser &parser) {
 103 #if YYDEBUG
 104     if (bison_)
 105         parser.set_debug_level(1);
 106 #endif
 107     if (strict_)
 108         driver.strict_ = true;
 109 }
 110
 111 void Setup(CYOutput &out, CYDriver &driver, CYOptions &options) {
 112     out.pretty_ = pretty_;
 113     CYContext context(options);
 114     driver.program_->Replace(context);
 115 }
 116
 117 static CYUTF8String Run(CYPool &pool, int client, CYUTF8String code) {
 118     const char *json;
 119     uint32_t size;
 120
 121     if (client == -1) {
 122         mode_ = Running;
 123 #ifdef CY_EXECUTE
 124         json = CYExecute(pool, code);
 125 #else
 126         json = NULL;
 127 #endif
 128         mode_ = Working;
 129         if (json == NULL)
 130             size = 0;
 131         else
 132             size = strlen(json);
 133     } else {
 134         mode_ = Sending;
 135         size = code.size;
 136         CYSendAll(client, &size, sizeof(size));
 137         CYSendAll(client, code.data, code.size);
 138         mode_ = Waiting;
 139         CYRecvAll(client, &size, sizeof(size));
 140         if (size == _not(uint32_t))
 141             json = NULL;
 142         else {
 143             char *temp(new(pool) char[size + 1]);
 144             CYRecvAll(client, temp, size);
 145             temp[size] = '\0';
 146             json = temp;
 147         }
 148         mode_ = Working;
 149     }
 150
 151     return CYUTF8String(json, size);
 152 }
 153
 154 static CYUTF8String Run(CYPool &pool, int client, const std::string &code) {
 155     return Run(pool, client, CYUTF8String(code.c_str(), code.size()));
 156 }
 157
 158 static std::ostream *out_;
 159
 160 static void Write(bool syntax, const char *data, size_t size, std::ostream &out) {
 161     if (syntax)
 162         CYLexerHighlight(data, size, out);
 163     else
 164         out.write(data, size);
 165 }
 166
 167 static void Output(bool syntax, CYUTF8String json, std::ostream *out, bool expand = false) {
 168     const char *data(json.data);
 169     size_t size(json.size);
 170
 171     if (data == NULL || out == NULL)
 172         return;
 173
 174     if (!expand ||
 175         data[0] != '@' && data[0] != '"' && data[0] != '\'' ||
 176         data[0] == '@' && data[1] != '"' && data[1] != '\''
 177     )
 178         Write(syntax, data, size, *out);
 179     else for (size_t i(0); i != size; ++i)
 180         if (data[i] != '\\')
 181             *out << data[i];
 182         else switch(data[++i]) {
 183             case '\0': goto done;
 184             case '\\': *out << '\\'; break;
 185             case '\'': *out << '\''; break;
 186             case '"': *out << '"'; break;
 187             case 'b': *out << '\b'; break;
 188             case 'f': *out << '\f'; break;
 189             case 'n': *out << '\n'; break;
 190             case 'r': *out << '\r'; break;
 191             case 't': *out << '\t'; break;
 192             case 'v': *out << '\v'; break;
 193             default: *out << '\\'; --i; break;
 194         }
 195
 196   done:
 197     *out << std::endl;
 198 }
 199
 200 static void Run(int client, bool syntax, const char *data, size_t size, std::ostream *out = NULL, bool expand = false) {
 201     CYPool pool;
 202     Output(syntax, Run(pool, client, CYUTF8String(data, size)), out, expand);
 203 }
 204
 205 static void Run(int client, bool syntax, std::string &code, std::ostream *out = NULL, bool expand = false) {
 206     Run(client, syntax, code.c_str(), code.size(), out, expand);
 207 }
 208
 209 int (*append_history$)(int, const char *);
 210
 211 static std::string command_;
 212
 213 static CYExpression *ParseExpression(CYUTF8String code) {
 214     std::stringstream stream;
 215     stream << '(' << code << ')';
 216     CYDriver driver(stream);
 217
 218     cy::parser parser(driver);
 219     Setup(driver, parser);
 220
 221     if (parser.parse() != 0 || !driver.errors_.empty())
 222         return NULL;
 223
 224     CYOptions options;
 225     CYContext context(options);
 226
 227     // XXX: this could be replaced with a CYStatement::Primitive()
 228     if (CYExpress *express = dynamic_cast<CYExpress *>(driver.program_->statements_))
 229         return express->expression_->Primitive(context);
 230
 231     return NULL;
 232 }
 233
 234 static int client_;
 235
 236 static char **Complete(const char *word, int start, int end) {
 237     rl_attempted_completion_over = TRUE;
 238
 239     CYLocalPool pool;
 240
 241     std::string line(rl_line_buffer, start);
 242     std::istringstream stream(command_ + line);
 243     CYDriver driver(stream);
 244
 245     driver.auto_ = true;
 246
 247     cy::parser parser(driver);
 248     Setup(driver, parser);
 249
 250     if (parser.parse() != 0 || !driver.errors_.empty())
 251         return NULL;
 252
 253     if (driver.mode_ == CYDriver::AutoNone)
 254         return NULL;
 255
 256     CYExpression *expression;
 257
 258     CYOptions options;
 259     CYContext context(options);
 260
 261     std::ostringstream prefix;
 262
 263     switch (driver.mode_) {
 264         case CYDriver::AutoPrimary:
 265             expression = $ CYThis();
 266         break;
 267
 268         case CYDriver::AutoDirect:
 269             expression = driver.context_;
 270         break;
 271
 272         case CYDriver::AutoIndirect:
 273             expression = $ CYIndirect(driver.context_);
 274         break;
 275
 276         case CYDriver::AutoMessage: {
 277             CYDriver::Context &thing(driver.contexts_.back());
 278             expression = $M($C1($V("object_getClass"), thing.context_), $S("messages"));
 279             for (CYDriver::Context::Words::const_iterator part(thing.words_.begin()); part != thing.words_.end(); ++part)
 280                 prefix << (*part)->word_ << ':';
 281         } break;
 282
 283         default:
 284             _assert(false);
 285     }
 286
 287     std::string begin(prefix.str());
 288
 289     driver.program_ = $ CYProgram($ CYExpress($C3(ParseExpression(
 290     "   function(object, prefix, word) {\n"
 291     "       var names = [];\n"
 292     "       var before = prefix.length;\n"
 293     "       prefix += word;\n"
 294     "       var entire = prefix.length;\n"
 295     "       for (name in object)\n"
 296     "           if (name.substring(0, entire) == prefix)\n"
 297     "               names.push(name.substr(before));\n"
 298     "       return names;\n"
 299     "   }\n"
 300     ), expression, $S(begin.c_str()), $S(word))));
 301
 302     driver.program_->Replace(context);
 303
 304     std::ostringstream str;
 305     CYOutput out(str, options);
 306     out << *driver.program_;
 307
 308     std::string code(str.str());
 309     CYUTF8String json(Run(pool, client_, code));
 310     // XXX: if this fails we should not try to parse it
 311
 312     CYExpression *result(ParseExpression(json));
 313     if (result == NULL)
 314         return NULL;
 315
 316     CYArray *array(dynamic_cast<CYArray *>(result));
 317
 318     if (array == NULL) {
 319         *out_ << '\n';
 320         Output(false, json, out_);
 321         rl_forced_update_display();
 322         return NULL;
 323     }
 324
 325     // XXX: use an std::set?
 326     typedef std::vector<std::string> Completions;
 327     Completions completions;
 328
 329     std::string common;
 330     bool rest(false);
 331
 332     CYForEach (element, array->elements_) {
 333         CYString *string(dynamic_cast<CYString *>(element->value_));
 334         _assert(string != NULL);
 335
 336         std::string completion;
 337         if (string->size_ != 0)
 338             completion.assign(string->value_, string->size_);
 339         else if (driver.mode_ == CYDriver::AutoMessage)
 340             completion = "]";
 341         else
 342             continue;
 343
 344         completions.push_back(completion);
 345
 346         if (!rest) {
 347             common = completion;
 348             rest = true;
 349         } else {
 350             size_t limit(completion.size()), size(common.size());
 351             if (size > limit)
 352                 common = common.substr(0, limit);
 353             else
 354                 limit = size;
 355             for (limit = 0; limit != size; ++limit)
 356                 if (common[limit] != completion[limit])
 357                     break;
 358             if (limit != size)
 359                 common = common.substr(0, limit);
 360         }
 361     }
 362
 363     size_t count(completions.size());
 364     if (count == 0)
 365         return NULL;
 366
 367     size_t colon(common.find(':'));
 368     if (colon != std::string::npos)
 369         common = common.substr(0, colon + 1);
 370     if (completions.size() == 1)
 371         common += ' ';
 372
 373     char **results(reinterpret_cast<char **>(malloc(sizeof(char *) * (count + 2))));
 374
 375     results[0] = strdup(common.c_str());
 376     size_t index(0);
 377     for (Completions::const_iterator i(completions.begin()); i != completions.end(); ++i)
 378         results[++index] = strdup(i->c_str());
 379     results[count + 1] = NULL;
 380
 381     return results;
 382 }
 383
 384 // need char *, not const char *
 385 static char name_[] = "cycript";
 386 static char break_[] = " \t\n\"\\'`@$><=;|&{(" ")}" ".:[]";
 387
 388 static void Console(CYOptions &options) {
 389     CYPool pool;
 390
 391     passwd *passwd;
 392     if (const char *username = getenv("LOGNAME"))
 393         passwd = getpwnam(username);
 394     else
 395         passwd = getpwuid(getuid());
 396
 397     const char *basedir(pool.strcat(passwd->pw_dir, "/.cycript", NULL));
 398     const char *histfile(pool.strcat(basedir, "/history", NULL));
 399     size_t histlines(0);
 400
 401     rl_initialize();
 402     rl_readline_name = name_;
 403
 404     mkdir(basedir, 0700);
 405     read_history(histfile);
 406
 407     bool bypass(false);
 408     bool debug(false);
 409     bool expand(false);
 410     bool syntax(true);
 411
 412     out_ = &std::cout;
 413
 414     // rl_completer_word_break_characters is broken in libedit
 415     rl_basic_word_break_characters = break_;
 416
 417     rl_completer_word_break_characters = break_;
 418     rl_attempted_completion_function = &Complete;
 419     rl_bind_key('\t', rl_complete);
 420
 421     struct sigaction action;
 422     sigemptyset(&action.sa_mask);
 423     action.sa_handler = &sigint;
 424     action.sa_flags = 0;
 425     sigaction(SIGINT, &action, NULL);
 426
 427     restart: for (;;) {
 428         command_.clear();
 429         std::vector<std::string> lines;
 430
 431         bool extra(false);
 432         const char *prompt("cy# ");
 433
 434         if (setjmp(ctrlc_) != 0) {
 435             mode_ = Working;
 436             *out_ << std::endl;
 437             goto restart;
 438         }
 439
 440       read:
 441
 442 #if RL_READLINE_VERSION >= 0x0600
 443         if (syntax) {
 444             rl_prep_term_function = CYDisplayStart;
 445             rl_redisplay_function = CYDisplayUpdate;
 446             rl_deprep_term_function = CYDisplayFinish;
 447         } else {
 448             rl_prep_term_function = rl_prep_terminal;
 449             rl_redisplay_function = rl_redisplay;
 450             rl_deprep_term_function = rl_deprep_terminal;
 451         }
 452 #endif
 453
 454         mode_ = Parsing;
 455         char *line(readline(prompt));
 456         mode_ = Working;
 457
 458         if (line == NULL)
 459             break;
 460         if (line[0] == '\0')
 461             goto read;
 462
 463         if (!extra) {
 464             extra = true;
 465             if (line[0] == '?') {
 466                 std::string data(line + 1);
 467                 if (data == "bypass") {
 468                     bypass = !bypass;
 469                     *out_ << "bypass == " << (bypass ? "true" : "false") << std::endl;
 470                 } else if (data == "debug") {
 471                     debug = !debug;
 472                     *out_ << "debug == " << (debug ? "true" : "false") << std::endl;
 473                 } else if (data == "expand") {
 474                     expand = !expand;
 475                     *out_ << "expand == " << (expand ? "true" : "false") << std::endl;
 476                 } else if (data == "syntax") {
 477                     syntax = !syntax;
 478                     *out_ << "syntax == " << (syntax ? "true" : "false") << std::endl;
 479                 }
 480                 add_history(line);
 481                 ++histlines;
 482                 goto restart;
 483             }
 484         }
 485
 486         command_ += line;
 487
 488         char *begin(line), *end(line + strlen(line));
 489         while (char *nl = reinterpret_cast<char *>(memchr(begin, '\n', end - begin))) {
 490             *nl = '\0';
 491             lines.push_back(begin);
 492             begin = nl + 1;
 493         }
 494
 495         lines.push_back(begin);
 496
 497         free(line);
 498
 499         std::string code;
 500
 501         if (bypass)
 502             code = command_;
 503         else {
 504             CYLocalPool pool;
 505
 506             std::istringstream stream(command_);
 507             CYDriver driver(stream);
 508
 509             cy::parser parser(driver);
 510             Setup(driver, parser);
 511
 512             if (parser.parse() != 0 || !driver.errors_.empty()) {
 513                 for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
 514                     cy::position begin(error->location_.begin);
 515                     if (begin.line != lines.size() || begin.column < lines.back().size() || error->warning_) {
 516                         cy::position end(error->location_.end);
 517
 518                         if (begin.line != lines.size()) {
 519                             std::cerr << "  | ";
 520                             std::cerr << lines[begin.line - 1] << std::endl;
 521                         }
 522
 523                         std::cerr << "....";
 524                         for (size_t i(0); i != begin.column; ++i)
 525                             std::cerr << '.';
 526                         if (begin.line != end.line || begin.column == end.column)
 527                             std::cerr << '^';
 528                         else for (size_t i(0), e(end.column - begin.column); i != e; ++i)
 529                             std::cerr << '^';
 530                         std::cerr << std::endl;
 531
 532                         std::cerr << "  | ";
 533                         std::cerr << error->message_ << std::endl;
 534
 535                         add_history(command_.c_str());
 536                         ++histlines;
 537                         goto restart;
 538                     }
 539                 }
 540
 541                 driver.errors_.clear();
 542
 543                 command_ += '\n';
 544                 prompt = "cy> ";
 545                 goto read;
 546             }
 547
 548             if (driver.program_ == NULL)
 549                 goto restart;
 550
 551             if (client_ != -1)
 552                 code = command_;
 553             else {
 554                 std::ostringstream str;
 555                 CYOutput out(str, options);
 556                 Setup(out, driver, options);
 557                 out << *driver.program_;
 558                 code = str.str();
 559             }
 560         }
 561
 562         add_history(command_.c_str());
 563         ++histlines;
 564
 565         if (debug) {
 566             Write(syntax, code.c_str(), code.size(), std::cout);
 567             std::cout << std::endl;
 568         }
 569
 570         Run(client_, syntax, code, out_, expand);
 571     }
 572
 573     if (append_history$ != NULL) {
 574         _syscall(close(_syscall(open(histfile, O_CREAT | O_WRONLY, 0600))));
 575         (*append_history$)(histlines, histfile);
 576     } else {
 577         write_history(histfile);
 578     }
 579
 580     *out_ << std::endl;
 581 }
 582
 583 static void *Map(const char *path, size_t *psize) {
 584     int fd;
 585     _syscall(fd = open(path, O_RDONLY));
 586
 587     struct stat stat;
 588     _syscall(fstat(fd, &stat));
 589     size_t size(stat.st_size);
 590
 591     *psize = size;
 592
 593     void *base;
 594     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
 595
 596     _syscall(close(fd));
 597     return base;
 598 }
 599
 600 void InjectLibrary(pid_t pid);
 601
 602 int Main(int argc, char const * const argv[], char const * const envp[]) {
 603     _aprcall(apr_initialize());
 604
 605     apr_pool_t *pool;
 606     apr_pool_create(&pool, NULL);
 607
 608     bool tty(isatty(STDIN_FILENO));
 609     bool compile(false);
 610     CYOptions options;
 611
 612     append_history$ = (int (*)(int, const char *)) (dlsym(RTLD_DEFAULT, "append_history"));
 613
 614 #ifdef CY_ATTACH
 615     pid_t pid(_not(pid_t));
 616 #endif
 617
 618     apr_getopt_t *state;
 619     _aprcall(apr_getopt_init(&state, pool, argc, argv));
 620
 621     for (;;) {
 622         char opt;
 623         const char *arg;
 624
 625         apr_status_t status(apr_getopt(state,
 626             "cg:n:"
 627 #ifdef CY_ATTACH
 628             "p:"
 629 #endif
 630             "s"
 631         , &opt, &arg));
 632
 633         switch (status) {
 634             case APR_EOF:
 635                 goto getopt;
 636             case APR_BADCH:
 637             case APR_BADARG:
 638                 fprintf(stderr,
 639                     "usage: cycript [-c]"
 640 #ifdef CY_ATTACH
 641                     " [-p <pid|name>]"
 642 #endif
 643                     " [<script> [<arg>...]]\n"
 644                 );
 645                 return 1;
 646             default:
 647                 _aprcall(status);
 648         }
 649
 650         switch (opt) {
 651             case 'c':
 652                 compile = true;
 653             break;
 654
 655             case 'g':
 656                 if (false);
 657                 else if (strcmp(arg, "rename") == 0)
 658                     options.verbose_ = true;
 659 #if YYDEBUG
 660                 else if (strcmp(arg, "bison") == 0)
 661                     bison_ = true;
 662 #endif
 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(arg, "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(arg));
 682                 char *end;
 683
 684                 pid = strtoul(arg, &end, 0);
 685                 if (arg + size != end) {
 686                     // XXX: arg needs to be escaped in some horrendous way of doom
 687                     const char *command(apr_pstrcat(pool, "ps axc|sed -e '/^ *[0-9]/{s/^ *\\([0-9]*\\)\\( *[^ ]*\\)\\{3\\} *-*\\([^ ]*\\)/\\3 \\1/;/^", arg, " /{s/^[^ ]* //;q;};};d'", NULL));
 688
 689                     if (FILE *pids = popen(command, "r")) {
 690                         char value[32];
 691                         size = 0;
 692
 693                         for (;;) {
 694                             size_t read(fread(value + size, 1, sizeof(value) - size, pids));
 695                             if (read == 0)
 696                                 break;
 697                             else {
 698                                 size += read;
 699                                 if (size == sizeof(value)) {
 700                                     pid = _not(pid_t);
 701                                     goto fail;
 702                                 }
 703                             }
 704                         }
 705
 706                       size:
 707                         if (size == 0)
 708                             goto fail;
 709                         if (value[size - 1] == '\n') {
 710                             --size;
 711                             goto size;
 712                         }
 713
 714                         value[size] = '\0';
 715                         size = strlen(value);
 716                         pid = strtoul(value, &end, 0);
 717                         if (value + size != end) fail:
 718                             pid = _not(pid_t);
 719                         _syscall(pclose(pids));
 720                     }
 721
 722                     if (pid == _not(pid_t)) {
 723                         fprintf(stderr, "invalid pid for -p\n");
 724                         return 1;
 725                     }
 726                 }
 727             } break;
 728 #endif
 729
 730             case 's':
 731                 strict_ = true;
 732             break;
 733         }
 734     } getopt:;
 735
 736     const char *script;
 737     int ind(state->ind);
 738
 739 #ifdef CY_ATTACH
 740     if (pid != _not(pid_t) && ind < argc - 1) {
 741         fprintf(stderr, "-p cannot set argv\n");
 742         return 1;
 743     }
 744
 745     if (pid != _not(pid_t) && compile) {
 746         fprintf(stderr, "-p conflicts with -c\n");
 747         return 1;
 748     }
 749 #endif
 750
 751     if (ind == argc)
 752         script = NULL;
 753     else {
 754 #ifdef CY_EXECUTE
 755         // XXX: const_cast?! wtf gcc :(
 756         CYSetArgs(argc - ind - 1, const_cast<const char **>(argv + ind + 1));
 757 #endif
 758         script = argv[ind];
 759         if (strcmp(script, "-") == 0)
 760             script = NULL;
 761     }
 762
 763 #ifdef CY_ATTACH
 764     if (pid != _not(pid_t) && script == NULL && !tty) {
 765         fprintf(stderr, "non-terminal attaching to remote console\n");
 766         return 1;
 767     }
 768 #endif
 769
 770 #ifdef CY_ATTACH
 771     if (pid == _not(pid_t))
 772         client_ = -1;
 773     else {
 774         int server(_syscall(socket(PF_UNIX, SOCK_STREAM, 0))); try {
 775             struct sockaddr_un address;
 776             memset(&address, 0, sizeof(address));
 777             address.sun_family = AF_UNIX;
 778
 779             sprintf(address.sun_path, "/tmp/.s.cy.%u", getpid());
 780
 781             _syscall(bind(server, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
 782             _syscall(chmod(address.sun_path, 0777));
 783
 784             try {
 785                 _syscall(listen(server, 1));
 786                 InjectLibrary(pid);
 787                 client_ = _syscall(accept(server, NULL, NULL));
 788             } catch (...) {
 789                 // XXX: exception?
 790                 unlink(address.sun_path);
 791                 throw;
 792             }
 793         } catch (...) {
 794             _syscall(close(server));
 795             throw;
 796         }
 797     }
 798 #else
 799     client_ = -1;
 800 #endif
 801
 802     if (script == NULL && tty)
 803         Console(options);
 804     else {
 805         CYLocalPool pool;
 806
 807         char *start, *end;
 808         std::istream *indirect;
 809
 810         if (script == NULL) {
 811             start = NULL;
 812             end = NULL;
 813             indirect = &std::cin;
 814         } else {
 815             size_t size;
 816             start = reinterpret_cast<char *>(Map(script, &size));
 817             end = start + size;
 818
 819             if (size >= 2 && start[0] == '#' && start[1] == '!') {
 820                 start += 2;
 821
 822                 if (void *line = memchr(start, '\n', end - start))
 823                     start = reinterpret_cast<char *>(line);
 824                 else
 825                     start = end;
 826             }
 827
 828             indirect = NULL;
 829         }
 830
 831         CYStream direct(start, end);
 832         std::istream &stream(indirect == NULL ? direct : *indirect);
 833         CYDriver driver(stream, script ?: "<stdin>");
 834
 835         cy::parser parser(driver);
 836         Setup(driver, parser);
 837
 838         if (parser.parse() != 0 || !driver.errors_.empty()) {
 839             for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i)
 840                 std::cerr << i->location_.begin << ": " << i->message_ << std::endl;
 841         } else if (driver.program_ != NULL)
 842             if (client_ != -1) {
 843                 // XXX: this code means that you can't pipe to another process
 844                 std::string code(start, end-start);
 845                 Run(client_, false, code, &std::cout);
 846             } else {
 847                 std::ostringstream str;
 848                 CYOutput out(str, options);
 849                 Setup(out, driver, options);
 850                 out << *driver.program_;
 851                 std::string code(str.str());
 852                 if (compile)
 853                     std::cout << code;
 854                 else
 855                     Run(client_, false, code, &std::cout);
 856             }
 857     }
 858
 859     apr_pool_destroy(pool);
 860
 861     return 0;
 862 }
 863
 864 int main(int argc, char const * const argv[], char const * const envp[]) {
 865     apr_status_t status(apr_app_initialize(&argc, &argv, &envp));
 866
 867     if (status != APR_SUCCESS) {
 868         fprintf(stderr, "apr_app_initialize() != APR_SUCCESS\n");
 869         return 1;
 870     } else try {
 871         return Main(argc, argv, envp);
 872     } catch (const CYException &error) {
 873         CYPool pool;
 874         fprintf(stderr, "%s\n", error.PoolCString(pool));
 875         return 1;
 876     }
 877 }