Console.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2012  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU Lesser General Public License, Version 3 {{{ */
   6 /*
   7  * Cycript is free software: you can redistribute it and/or modify it under
   8  * the terms of the GNU Lesser General Public License as published by the
   9  * Free Software Foundation, either version 3 of the License, or (at your
  10  * option) any later version.
  11  *
  12  * Cycript is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  15  * License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser 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
  64 #include <dlfcn.h>
  65
  66 #include "Replace.hpp"
  67
  68 static volatile enum {
  69     Working,
  70     Parsing,
  71     Running,
  72     Sending,
  73     Waiting,
  74 } mode_;
  75
  76 static jmp_buf ctrlc_;
  77
  78 static void sigint(int) {
  79     switch (mode_) {
  80         case Working:
  81             return;
  82         case Parsing:
  83             longjmp(ctrlc_, 1);
  84         case Running:
  85             throw "*** Ctrl-C";
  86         case Sending:
  87             return;
  88         case Waiting:
  89             return;
  90     }
  91 }
  92
  93 #if YYDEBUG
  94 static bool bison_;
  95 #endif
  96 static bool strict_;
  97 static bool pretty_;
  98
  99 void Setup(CYDriver &driver, cy::parser &parser) {
 100 #if YYDEBUG
 101     if (bison_)
 102         parser.set_debug_level(1);
 103 #endif
 104     if (strict_)
 105         driver.strict_ = true;
 106 }
 107
 108 void Setup(CYOutput &out, CYDriver &driver, CYOptions &options) {
 109     out.pretty_ = pretty_;
 110     CYContext context(options);
 111     driver.program_->Replace(context);
 112 }
 113
 114 static CYUTF8String Run(CYPool &pool, int client, CYUTF8String code) {
 115     const char *json;
 116     size_t size;
 117
 118     if (client == -1) {
 119         mode_ = Running;
 120 #ifdef CY_EXECUTE
 121         json = CYExecute(pool, code);
 122 #else
 123         json = NULL;
 124 #endif
 125         mode_ = Working;
 126         if (json == NULL)
 127             size = 0;
 128         else
 129             size = strlen(json);
 130     } else {
 131         mode_ = Sending;
 132         size = code.size;
 133         CYSendAll(client, &size, sizeof(size));
 134         CYSendAll(client, code.data, code.size);
 135         mode_ = Waiting;
 136         CYRecvAll(client, &size, sizeof(size));
 137         if (size == _not(size_t))
 138             json = NULL;
 139         else {
 140             char *temp(new(pool) char[size + 1]);
 141             CYRecvAll(client, temp, size);
 142             temp[size] = '\0';
 143             json = temp;
 144         }
 145         mode_ = Working;
 146     }
 147
 148     return CYUTF8String(json, size);
 149 }
 150
 151 static CYUTF8String Run(CYPool &pool, int client, const std::string &code) {
 152     return Run(pool, client, CYUTF8String(code.c_str(), code.size()));
 153 }
 154
 155 FILE *fout_;
 156
 157 static void Output(CYUTF8String json, FILE *fout, bool expand = false) {
 158     const char *data(json.data);
 159     size_t size(json.size);
 160
 161     if (data == NULL || fout == NULL)
 162         return;
 163
 164     if (!expand ||
 165         data[0] != '@' && data[0] != '"' && data[0] != '\'' ||
 166         data[0] == '@' && data[1] != '"' && data[1] != '\''
 167     )
 168         fputs(data, fout);
 169     else for (size_t i(0); i != size; ++i)
 170         if (data[i] != '\\')
 171             fputc(data[i], fout);
 172         else switch(data[++i]) {
 173             case '\0': goto done;
 174             case '\\': fputc('\\', fout); break;
 175             case '\'': fputc('\'', fout); break;
 176             case '"': fputc('"', fout); break;
 177             case 'b': fputc('\b', fout); break;
 178             case 'f': fputc('\f', fout); break;
 179             case 'n': fputc('\n', fout); break;
 180             case 'r': fputc('\r', fout); break;
 181             case 't': fputc('\t', fout); break;
 182             case 'v': fputc('\v', fout); break;
 183             default: fputc('\\', fout); --i; break;
 184         }
 185
 186   done:
 187     fputs("\n", fout);
 188     fflush(fout);
 189 }
 190
 191 static void Run(int client, const char *data, size_t size, FILE *fout = NULL, bool expand = false) {
 192     CYPool pool;
 193     Output(Run(pool, client, CYUTF8String(data, size)), fout, expand);
 194 }
 195
 196 static void Run(int client, std::string &code, FILE *fout = NULL, bool expand = false) {
 197     Run(client, code.c_str(), code.size(), fout, expand);
 198 }
 199
 200 int (*append_history$)(int, const char *);
 201
 202 static std::string command_;
 203
 204 static CYExpression *ParseExpression(CYUTF8String code) {
 205     std::stringstream stream;
 206     stream << '(' << code << ')';
 207     CYDriver driver(stream);
 208
 209     cy::parser parser(driver);
 210     Setup(driver, parser);
 211
 212     if (parser.parse() != 0 || !driver.errors_.empty())
 213         return NULL;
 214
 215     CYOptions options;
 216     CYContext context(options);
 217
 218     // XXX: this could be replaced with a CYStatement::Primitive()
 219     if (CYExpress *express = dynamic_cast<CYExpress *>(driver.program_->statements_))
 220         return express->expression_->Primitive(context);
 221
 222     return NULL;
 223 }
 224
 225 static int client_;
 226
 227 static char **Complete(const char *word, int start, int end) {
 228     rl_attempted_completion_over = TRUE;
 229
 230     CYLocalPool pool;
 231
 232     std::string line(rl_line_buffer, start);
 233     std::istringstream stream(command_ + line);
 234     CYDriver driver(stream);
 235
 236     driver.auto_ = true;
 237
 238     cy::parser parser(driver);
 239     Setup(driver, parser);
 240
 241     if (parser.parse() != 0 || !driver.errors_.empty())
 242         return NULL;
 243
 244     if (driver.mode_ == CYDriver::AutoNone)
 245         return NULL;
 246
 247     CYExpression *expression;
 248
 249     CYOptions options;
 250     CYContext context(options);
 251
 252     std::ostringstream prefix;
 253
 254     switch (driver.mode_) {
 255         case CYDriver::AutoPrimary:
 256             expression = $ CYThis();
 257         break;
 258
 259         case CYDriver::AutoDirect:
 260             expression = driver.context_;
 261         break;
 262
 263         case CYDriver::AutoIndirect:
 264             expression = $ CYIndirect(driver.context_);
 265         break;
 266
 267         case CYDriver::AutoMessage: {
 268             CYDriver::Context &thing(driver.contexts_.back());
 269             expression = $M($C1($V("object_getClass"), thing.context_), $S("messages"));
 270             for (CYDriver::Context::Words::const_iterator part(thing.words_.begin()); part != thing.words_.end(); ++part)
 271                 prefix << (*part)->word_ << ':';
 272         } break;
 273
 274         default:
 275             _assert(false);
 276     }
 277
 278     std::string begin(prefix.str());
 279
 280     driver.program_ = $ CYProgram($ CYExpress($C3(ParseExpression(
 281     "   function(object, prefix, word) {\n"
 282     "       var names = [];\n"
 283     "       var before = prefix.length;\n"
 284     "       prefix += word;\n"
 285     "       var entire = prefix.length;\n"
 286     "       for (name in object)\n"
 287     "           if (name.substring(0, entire) == prefix)\n"
 288     "               names.push(name.substr(before));\n"
 289     "       return names;\n"
 290     "   }\n"
 291     ), expression, $S(begin.c_str()), $S(word))));
 292
 293     driver.program_->Replace(context);
 294
 295     std::ostringstream str;
 296     CYOutput out(str, options);
 297     out << *driver.program_;
 298
 299     std::string code(str.str());
 300     CYUTF8String json(Run(pool, client_, code));
 301     // XXX: if this fails we should not try to parse it
 302
 303     CYExpression *result(ParseExpression(json));
 304     if (result == NULL)
 305         return NULL;
 306
 307     CYArray *array(dynamic_cast<CYArray *>(result));
 308
 309     if (array == NULL) {
 310         fprintf(fout_, "\n");
 311         Output(json, fout_);
 312         rl_forced_update_display();
 313         return NULL;
 314     }
 315
 316     // XXX: use an std::set?
 317     typedef std::vector<std::string> Completions;
 318     Completions completions;
 319
 320     std::string common;
 321     bool rest(false);
 322
 323     CYForEach (element, array->elements_) {
 324         CYString *string(dynamic_cast<CYString *>(element->value_));
 325         _assert(string != NULL);
 326
 327         std::string completion;
 328         if (string->size_ != 0)
 329             completion.assign(string->value_, string->size_);
 330         else if (driver.mode_ == CYDriver::AutoMessage)
 331             completion = "]";
 332         else
 333             continue;
 334
 335         completions.push_back(completion);
 336
 337         if (!rest) {
 338             common = completion;
 339             rest = true;
 340         } else {
 341             size_t limit(completion.size()), size(common.size());
 342             if (size > limit)
 343                 common = common.substr(0, limit);
 344             else
 345                 limit = size;
 346             for (limit = 0; limit != size; ++limit)
 347                 if (common[limit] != completion[limit])
 348                     break;
 349             if (limit != size)
 350                 common = common.substr(0, limit);
 351         }
 352     }
 353
 354     size_t count(completions.size());
 355     if (count == 0)
 356         return NULL;
 357
 358     size_t colon(common.find(':'));
 359     if (colon != std::string::npos)
 360         common = common.substr(0, colon + 1);
 361     if (completions.size() == 1)
 362         common += ' ';
 363
 364     char **results(reinterpret_cast<char **>(malloc(sizeof(char *) * (count + 2))));
 365
 366     results[0] = strdup(common.c_str());
 367     size_t index(0);
 368     for (Completions::const_iterator i(completions.begin()); i != completions.end(); ++i)
 369         results[++index] = strdup(i->c_str());
 370     results[count + 1] = NULL;
 371
 372     return results;
 373 }
 374
 375 // need char *, not const char *
 376 static char name_[] = "cycript";
 377 static char break_[] = " \t\n\"\\'`@$><=;|&{(" ")}" ".:[]";
 378
 379 static void Console(CYOptions &options) {
 380     CYPool pool;
 381
 382     passwd *passwd;
 383     if (const char *username = getenv("LOGNAME"))
 384         passwd = getpwnam(username);
 385     else
 386         passwd = getpwuid(getuid());
 387
 388     const char *basedir(apr_psprintf(pool, "%s/.cycript", passwd->pw_dir));
 389     const char *histfile(apr_psprintf(pool, "%s/history", basedir));
 390     size_t histlines(0);
 391
 392     rl_initialize();
 393     rl_readline_name = name_;
 394
 395     mkdir(basedir, 0700);
 396     read_history(histfile);
 397
 398     bool bypass(false);
 399     bool debug(false);
 400     bool expand(false);
 401
 402     fout_ = stdout;
 403
 404     // rl_completer_word_break_characters is broken in libedit
 405     rl_basic_word_break_characters = break_;
 406
 407     rl_completer_word_break_characters = break_;
 408     rl_attempted_completion_function = &Complete;
 409     rl_bind_key('\t', rl_complete);
 410
 411     struct sigaction action;
 412     sigemptyset(&action.sa_mask);
 413     action.sa_handler = &sigint;
 414     action.sa_flags = 0;
 415     sigaction(SIGINT, &action, NULL);
 416
 417     restart: for (;;) {
 418         command_.clear();
 419         std::vector<std::string> lines;
 420
 421         bool extra(false);
 422         const char *prompt("cy# ");
 423
 424         if (setjmp(ctrlc_) != 0) {
 425             mode_ = Working;
 426             fputs("\n", fout_);
 427             fflush(fout_);
 428             goto restart;
 429         }
 430
 431       read:
 432         mode_ = Parsing;
 433         char *line(readline(prompt));
 434         mode_ = Working;
 435         if (line == NULL)
 436             break;
 437         if (line[0] == '\0')
 438             goto read;
 439
 440         if (!extra) {
 441             extra = true;
 442             if (line[0] == '?') {
 443                 std::string data(line + 1);
 444                 if (data == "bypass") {
 445                     bypass = !bypass;
 446                     fprintf(fout_, "bypass == %s\n", bypass ? "true" : "false");
 447                     fflush(fout_);
 448                 } else if (data == "debug") {
 449                     debug = !debug;
 450                     fprintf(fout_, "debug == %s\n", debug ? "true" : "false");
 451                     fflush(fout_);
 452                 } else if (data == "expand") {
 453                     expand = !expand;
 454                     fprintf(fout_, "expand == %s\n", expand ? "true" : "false");
 455                     fflush(fout_);
 456                 }
 457                 add_history(line);
 458                 ++histlines;
 459                 goto restart;
 460             }
 461         }
 462
 463         command_ += line;
 464
 465         char *begin(line), *end(line + strlen(line));
 466         while (char *nl = reinterpret_cast<char *>(memchr(begin, '\n', end - begin))) {
 467             *nl = '\0';
 468             lines.push_back(begin);
 469             begin = nl + 1;
 470         }
 471
 472         lines.push_back(begin);
 473
 474         free(line);
 475
 476         std::string code;
 477
 478         if (bypass)
 479             code = command_;
 480         else {
 481             CYLocalPool pool;
 482
 483             std::istringstream stream(command_);
 484             CYDriver driver(stream);
 485
 486             cy::parser parser(driver);
 487             Setup(driver, parser);
 488
 489             if (parser.parse() != 0 || !driver.errors_.empty()) {
 490                 for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
 491                     cy::position begin(error->location_.begin);
 492                     if (begin.line != lines.size() || begin.column < lines.back().size() || error->warning_) {
 493                         cy::position end(error->location_.end);
 494
 495                         if (begin.line != lines.size()) {
 496                             std::cerr << "  | ";
 497                             std::cerr << lines[begin.line - 1] << std::endl;
 498                         }
 499
 500                         std::cerr << "....";
 501                         for (size_t i(0); i != begin.column; ++i)
 502                             std::cerr << '.';
 503                         if (begin.line != end.line || begin.column == end.column)
 504                             std::cerr << '^';
 505                         else for (size_t i(0), e(end.column - begin.column); i != e; ++i)
 506                             std::cerr << '^';
 507                         std::cerr << std::endl;
 508
 509                         std::cerr << "  | ";
 510                         std::cerr << error->message_ << std::endl;
 511
 512                         add_history(command_.c_str());
 513                         ++histlines;
 514                         goto restart;
 515                     }
 516                 }
 517
 518                 driver.errors_.clear();
 519
 520                 command_ += '\n';
 521                 prompt = "cy> ";
 522                 goto read;
 523             }
 524
 525             if (driver.program_ == NULL)
 526                 goto restart;
 527
 528             if (client_ != -1)
 529                 code = command_;
 530             else {
 531                 std::ostringstream str;
 532                 CYOutput out(str, options);
 533                 Setup(out, driver, options);
 534                 out << *driver.program_;
 535                 code = str.str();
 536             }
 537         }
 538
 539         add_history(command_.c_str());
 540         ++histlines;
 541
 542         if (debug)
 543             std::cout << code << std::endl;
 544
 545         Run(client_, code, fout_, expand);
 546     }
 547
 548     if (append_history$ != NULL) {
 549         _syscall(close(_syscall(open(histfile, O_CREAT | O_WRONLY, 0600))));
 550         (*append_history$)(histlines, histfile);
 551     } else {
 552         write_history(histfile);
 553     }
 554
 555     fputs("\n", fout_);
 556     fflush(fout_);
 557 }
 558
 559 static void *Map(const char *path, size_t *psize) {
 560     int fd;
 561     _syscall(fd = open(path, O_RDONLY));
 562
 563     struct stat stat;
 564     _syscall(fstat(fd, &stat));
 565     size_t size(stat.st_size);
 566
 567     *psize = size;
 568
 569     void *base;
 570     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
 571
 572     _syscall(close(fd));
 573     return base;
 574 }
 575
 576 void InjectLibrary(pid_t pid);
 577
 578 int Main(int argc, char const * const argv[], char const * const envp[]) {
 579     bool tty(isatty(STDIN_FILENO));
 580     bool compile(false);
 581     CYOptions options;
 582
 583     append_history$ = (int (*)(int, const char *)) (dlsym(RTLD_DEFAULT, "append_history"));
 584
 585 #ifdef CY_ATTACH
 586     pid_t pid(_not(pid_t));
 587 #endif
 588
 589     CYPool pool;
 590     apr_getopt_t *state;
 591     _aprcall(apr_getopt_init(&state, pool, argc, argv));
 592
 593     for (;;) {
 594         char opt;
 595         const char *arg;
 596
 597         apr_status_t status(apr_getopt(state,
 598             "cg:n:"
 599 #ifdef CY_ATTACH
 600             "p:"
 601 #endif
 602             "s"
 603         , &opt, &arg));
 604
 605         switch (status) {
 606             case APR_EOF:
 607                 goto getopt;
 608             case APR_BADCH:
 609             case APR_BADARG:
 610                 fprintf(stderr,
 611                     "usage: cycript [-c]"
 612 #ifdef CY_ATTACH
 613                     " [-p <pid|name>]"
 614 #endif
 615                     " [<script> [<arg>...]]\n"
 616                 );
 617                 return 1;
 618             default:
 619                 _aprcall(status);
 620         }
 621
 622         switch (opt) {
 623             case 'c':
 624                 compile = true;
 625             break;
 626
 627             case 'g':
 628                 if (false);
 629                 else if (strcmp(arg, "rename") == 0)
 630                     options.verbose_ = true;
 631 #if YYDEBUG
 632                 else if (strcmp(arg, "bison") == 0)
 633                     bison_ = true;
 634 #endif
 635                 else {
 636                     fprintf(stderr, "invalid name for -g\n");
 637                     return 1;
 638                 }
 639             break;
 640
 641             case 'n':
 642                 if (false);
 643                 else if (strcmp(arg, "minify") == 0)
 644                     pretty_ = true;
 645                 else {
 646                     fprintf(stderr, "invalid name for -n\n");
 647                     return 1;
 648                 }
 649             break;
 650
 651 #ifdef CY_ATTACH
 652             case 'p': {
 653                 size_t size(strlen(arg));
 654                 char *end;
 655
 656                 pid = strtoul(arg, &end, 0);
 657                 if (arg + size != end) {
 658                     // XXX: arg needs to be escaped in some horrendous way of doom
 659                     const char *command(apr_psprintf(pool, "ps axc|sed -e '/^ *[0-9]/{s/^ *\\([0-9]*\\)\\( *[^ ]*\\)\\{3\\} *-*\\([^ ]*\\)/\\3 \\1/;/^%s /{s/^[^ ]* //;q;};};d'", arg));
 660
 661                     if (FILE *pids = popen(command, "r")) {
 662                         char value[32];
 663                         size = 0;
 664
 665                         for (;;) {
 666                             size_t read(fread(value + size, 1, sizeof(value) - size, pids));
 667                             if (read == 0)
 668                                 break;
 669                             else {
 670                                 size += read;
 671                                 if (size == sizeof(value)) {
 672                                     pid = _not(pid_t);
 673                                     goto fail;
 674                                 }
 675                             }
 676                         }
 677
 678                       size:
 679                         if (size == 0)
 680                             goto fail;
 681                         if (value[size - 1] == '\n') {
 682                             --size;
 683                             goto size;
 684                         }
 685
 686                         value[size] = '\0';
 687                         size = strlen(value);
 688                         pid = strtoul(value, &end, 0);
 689                         if (value + size != end) fail:
 690                             pid = _not(pid_t);
 691                         _syscall(pclose(pids));
 692                     }
 693
 694                     if (pid == _not(pid_t)) {
 695                         fprintf(stderr, "invalid pid for -p\n");
 696                         return 1;
 697                     }
 698                 }
 699             } break;
 700 #endif
 701
 702             case 's':
 703                 strict_ = true;
 704             break;
 705         }
 706     } getopt:;
 707
 708     const char *script;
 709     int ind(state->ind);
 710
 711 #ifdef CY_ATTACH
 712     if (pid != _not(pid_t) && ind < argc - 1) {
 713         fprintf(stderr, "-p cannot set argv\n");
 714         return 1;
 715     }
 716
 717     if (pid != _not(pid_t) && compile) {
 718         fprintf(stderr, "-p conflicts with -c\n");
 719         return 1;
 720     }
 721 #endif
 722
 723     if (ind == argc)
 724         script = NULL;
 725     else {
 726 #ifdef CY_EXECUTE
 727         // XXX: const_cast?! wtf gcc :(
 728         CYSetArgs(argc - ind - 1, const_cast<const char **>(argv + ind + 1));
 729 #endif
 730         script = argv[ind];
 731         if (strcmp(script, "-") == 0)
 732             script = NULL;
 733     }
 734
 735 #ifdef CY_ATTACH
 736     if (pid != _not(pid_t) && script == NULL && !tty) {
 737         fprintf(stderr, "non-terminal attaching to remote console\n");
 738         return 1;
 739     }
 740 #endif
 741
 742 #ifdef CY_ATTACH
 743     if (pid == _not(pid_t))
 744         client_ = -1;
 745     else {
 746         int server(_syscall(socket(PF_UNIX, SOCK_STREAM, 0))); try {
 747             struct sockaddr_un address;
 748             memset(&address, 0, sizeof(address));
 749             address.sun_family = AF_UNIX;
 750
 751             sprintf(address.sun_path, "/tmp/.s.cy.%u", getpid());
 752
 753             _syscall(bind(server, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
 754             _syscall(chmod(address.sun_path, 0777));
 755
 756             try {
 757                 _syscall(listen(server, 1));
 758                 InjectLibrary(pid);
 759                 client_ = _syscall(accept(server, NULL, NULL));
 760             } catch (...) {
 761                 // XXX: exception?
 762                 unlink(address.sun_path);
 763                 throw;
 764             }
 765         } catch (...) {
 766             _syscall(close(server));
 767             throw;
 768         }
 769     }
 770 #else
 771     client_ = -1;
 772 #endif
 773
 774     if (script == NULL && tty)
 775         Console(options);
 776     else {
 777         CYLocalPool pool;
 778
 779         char *start, *end;
 780         std::istream *indirect;
 781
 782         if (script == NULL) {
 783             start = NULL;
 784             end = NULL;
 785             indirect = &std::cin;
 786         } else {
 787             size_t size;
 788             start = reinterpret_cast<char *>(Map(script, &size));
 789             end = start + size;
 790
 791             if (size >= 2 && start[0] == '#' && start[1] == '!') {
 792                 start += 2;
 793
 794                 if (void *line = memchr(start, '\n', end - start))
 795                     start = reinterpret_cast<char *>(line);
 796                 else
 797                     start = end;
 798             }
 799
 800             indirect = NULL;
 801         }
 802
 803         CYStream direct(start, end);
 804         std::istream &stream(indirect == NULL ? direct : *indirect);
 805         CYDriver driver(stream, script ?: "<stdin>");
 806
 807         cy::parser parser(driver);
 808         Setup(driver, parser);
 809
 810         if (parser.parse() != 0 || !driver.errors_.empty()) {
 811             for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i)
 812                 std::cerr << i->location_.begin << ": " << i->message_ << std::endl;
 813         } else if (driver.program_ != NULL)
 814             if (client_ != -1) {
 815                 std::string code(start, end-start);
 816                 Run(client_, code, stdout);
 817             } else {
 818                 std::ostringstream str;
 819                 CYOutput out(str, options);
 820                 Setup(out, driver, options);
 821                 out << *driver.program_;
 822                 std::string code(str.str());
 823                 if (compile)
 824                     std::cout << code;
 825                 else
 826                     Run(client_, code, stdout);
 827             }
 828     }
 829
 830     return 0;
 831 }
 832
 833 int main(int argc, char const * const argv[], char const * const envp[]) {
 834     apr_status_t status(apr_app_initialize(&argc, &argv, &envp));
 835
 836     if (status != APR_SUCCESS) {
 837         fprintf(stderr, "apr_app_initialize() != APR_SUCCESS\n");
 838         return 1;
 839     } else try {
 840         return Main(argc, argv, envp);
 841     } catch (const CYException &error) {
 842         CYPool pool;
 843         fprintf(stderr, "%s\n", error.PoolCString(pool));
 844         return 1;
 845     }
 846 }