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