Console.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2010  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     CYExpress *express(dynamic_cast<CYExpress *>(driver.program_->statements_));
 217     _assert(express != NULL);
 218     return express->expression_;
 219 }
 220
 221 static int client_;
 222
 223 static char **Complete(const char *word, int start, int end) {
 224     rl_attempted_completion_over = TRUE;
 225
 226     CYLocalPool pool;
 227     CYDriver driver;
 228     cy::parser parser(driver);
 229     Setup(driver, parser);
 230
 231     std::string line(rl_line_buffer, start);
 232     std::string command(command_ + line);
 233
 234     driver.data_ = command.c_str();
 235     driver.size_ = command.size();
 236
 237     driver.auto_ = true;
 238
 239     if (parser.parse() != 0 || !driver.errors_.empty())
 240         return NULL;
 241
 242     if (driver.mode_ == CYDriver::AutoNone)
 243         return NULL;
 244
 245     CYExpression *expression;
 246
 247     CYOptions options;
 248     CYContext context(options);
 249
 250     std::ostringstream prefix;
 251
 252     switch (driver.mode_) {
 253         case CYDriver::AutoPrimary:
 254             expression = $ CYThis();
 255         break;
 256
 257         case CYDriver::AutoDirect:
 258             expression = driver.context_;
 259         break;
 260
 261         case CYDriver::AutoIndirect:
 262             expression = $ CYIndirect(driver.context_);
 263         break;
 264
 265         case CYDriver::AutoMessage: {
 266             CYDriver::Context &thing(driver.contexts_.back());
 267             expression = $M($C1($V("object_getClass"), thing.context_), $S("messages"));
 268             for (CYDriver::Context::Words::const_iterator part(thing.words_.begin()); part != thing.words_.end(); ++part)
 269                 prefix << (*part)->word_ << ':';
 270         } break;
 271
 272         default:
 273             _assert(false);
 274     }
 275
 276     std::string begin(prefix.str());
 277
 278     driver.program_ = $ CYProgram($ CYExpress($C3(ParseExpression(
 279     "   function(object, prefix, word) {\n"
 280     "       var names = [];\n"
 281     "       var pattern = '^' + prefix + word;\n"
 282     "       var length = prefix.length;\n"
 283     "       for (name in object)\n"
 284     "           if (name.match(pattern) != null)\n"
 285     "               names.push(name.substr(length));\n"
 286     "       return names;\n"
 287     "   }\n"
 288     ), expression, $S(begin.c_str()), $S(word))));
 289
 290     driver.program_->Replace(context);
 291
 292     std::ostringstream str;
 293     CYOutput out(str, options);
 294     out << *driver.program_;
 295
 296     std::string code(str.str());
 297     CYUTF8String json(Run(pool, client_, code));
 298
 299     CYExpression *result(ParseExpression(json));
 300     if (result == NULL)
 301         return NULL;
 302
 303     CYArray *array(dynamic_cast<CYArray *>(result));
 304
 305     if (array == NULL) {
 306         fprintf(fout_, "\n");
 307         Output(json, fout_);
 308         rl_forced_update_display();
 309         return NULL;
 310     }
 311
 312     // XXX: use an std::set?
 313     typedef std::vector<std::string> Completions;
 314     Completions completions;
 315
 316     std::string common;
 317     bool rest(false);
 318
 319     CYForEach (element, array->elements_) {
 320         CYString *string(dynamic_cast<CYString *>(element->value_));
 321         _assert(string != NULL);
 322
 323         std::string completion;
 324         if (string->size_ != 0)
 325             completion.assign(string->value_, string->size_);
 326         else if (driver.mode_ == CYDriver::AutoMessage)
 327             completion = "]";
 328         else
 329             continue;
 330
 331         completions.push_back(completion);
 332
 333         if (!rest) {
 334             common = completion;
 335             rest = true;
 336         } else {
 337             size_t limit(completion.size()), size(common.size());
 338             if (size > limit)
 339                 common = common.substr(0, limit);
 340             else
 341                 limit = size;
 342             for (limit = 0; limit != size; ++limit)
 343                 if (common[limit] != completion[limit])
 344                     break;
 345             if (limit != size)
 346                 common = common.substr(0, limit);
 347         }
 348     }
 349
 350     size_t count(completions.size());
 351     if (count == 0)
 352         return NULL;
 353
 354     size_t colon(common.find(':'));
 355     if (colon != std::string::npos)
 356         common = common.substr(0, colon + 1);
 357     if (completions.size() == 1)
 358         common += ' ';
 359
 360     char **results(reinterpret_cast<char **>(malloc(sizeof(char *) * (count + 2))));
 361
 362     results[0] = strdup(common.c_str());
 363     size_t index(0);
 364     for (Completions::const_iterator i(completions.begin()); i != completions.end(); ++i)
 365         results[++index] = strdup(i->c_str());
 366     results[count + 1] = NULL;
 367
 368     return results;
 369 }
 370
 371 // need char *, not const char *
 372 static char name_[] = "cycript";
 373 static char break_[] = " \t\n\"\\'`@$><=;|&{(" ")}" ".:[]";
 374
 375 static void Console(CYOptions &options) {
 376     CYPool pool;
 377
 378     passwd *passwd;
 379     if (const char *username = getenv("LOGNAME"))
 380         passwd = getpwnam(username);
 381     else
 382         passwd = getpwuid(getuid());
 383
 384     const char *basedir(apr_psprintf(pool, "%s/.cycript", passwd->pw_dir));
 385     const char *histfile(apr_psprintf(pool, "%s/history", basedir));
 386     size_t histlines(0);
 387
 388     rl_initialize();
 389     rl_readline_name = name_;
 390
 391     mkdir(basedir, 0700);
 392     read_history(histfile);
 393
 394     bool bypass(false);
 395     bool debug(false);
 396     bool expand(false);
 397
 398     fout_ = stdout;
 399
 400     // rl_completer_word_break_characters is broken in libedit
 401     rl_basic_word_break_characters = break_;
 402
 403     rl_completer_word_break_characters = break_;
 404     rl_attempted_completion_function = &Complete;
 405     rl_bind_key('\t', rl_complete);
 406
 407     struct sigaction action;
 408     sigemptyset(&action.sa_mask);
 409     action.sa_handler = &sigint;
 410     action.sa_flags = 0;
 411     sigaction(SIGINT, &action, NULL);
 412
 413     restart: for (;;) {
 414         command_.clear();
 415         std::vector<std::string> lines;
 416
 417         bool extra(false);
 418         const char *prompt("cy# ");
 419
 420         if (setjmp(ctrlc_) != 0) {
 421             mode_ = Working;
 422             fputs("\n", fout_);
 423             fflush(fout_);
 424             goto restart;
 425         }
 426
 427       read:
 428         mode_ = Parsing;
 429         char *line(readline(prompt));
 430         mode_ = Working;
 431         if (line == NULL)
 432             break;
 433         if (line[0] == '\0')
 434             goto read;
 435
 436         if (!extra) {
 437             extra = true;
 438             if (line[0] == '?') {
 439                 std::string data(line + 1);
 440                 if (data == "bypass") {
 441                     bypass = !bypass;
 442                     fprintf(fout_, "bypass == %s\n", bypass ? "true" : "false");
 443                     fflush(fout_);
 444                 } else if (data == "debug") {
 445                     debug = !debug;
 446                     fprintf(fout_, "debug == %s\n", debug ? "true" : "false");
 447                     fflush(fout_);
 448                 } else if (data == "expand") {
 449                     expand = !expand;
 450                     fprintf(fout_, "expand == %s\n", expand ? "true" : "false");
 451                     fflush(fout_);
 452                 }
 453                 add_history(line);
 454                 ++histlines;
 455                 goto restart;
 456             }
 457         }
 458
 459         command_ += line;
 460
 461         char *begin(line), *end(line + strlen(line));
 462         while (char *nl = reinterpret_cast<char *>(memchr(begin, '\n', end - begin))) {
 463             *nl = '\0';
 464             lines.push_back(begin);
 465             begin = nl + 1;
 466         }
 467
 468         lines.push_back(begin);
 469
 470         free(line);
 471
 472         std::string code;
 473
 474         if (bypass)
 475             code = command_;
 476         else {
 477             CYLocalPool pool;
 478             CYDriver driver;
 479             cy::parser parser(driver);
 480             Setup(driver, parser);
 481
 482             driver.data_ = command_.c_str();
 483             driver.size_ = command_.size();
 484
 485             if (parser.parse() != 0 || !driver.errors_.empty()) {
 486                 for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
 487                     cy::position begin(error->location_.begin);
 488                     if (begin.line != lines.size() || begin.column < lines.back().size() || error->warning_) {
 489                         cy::position end(error->location_.end);
 490
 491                         if (begin.line != lines.size()) {
 492                             std::cerr << "  | ";
 493                             std::cerr << lines[begin.line - 1] << std::endl;
 494                         }
 495
 496                         std::cerr << "....";
 497                         for (size_t i(0); i != begin.column; ++i)
 498                             std::cerr << '.';
 499                         if (begin.line != end.line || begin.column == end.column)
 500                             std::cerr << '^';
 501                         else for (size_t i(0), e(end.column - begin.column); i != e; ++i)
 502                             std::cerr << '^';
 503                         std::cerr << std::endl;
 504
 505                         std::cerr << "  | ";
 506                         std::cerr << error->message_ << std::endl;
 507
 508                         add_history(command_.c_str());
 509                         ++histlines;
 510                         goto restart;
 511                     }
 512                 }
 513
 514                 driver.errors_.clear();
 515
 516                 command_ += '\n';
 517                 prompt = "cy> ";
 518                 goto read;
 519             }
 520
 521             if (driver.program_ == NULL)
 522                 goto restart;
 523
 524             if (client_ != -1)
 525                 code = command_;
 526             else {
 527                 std::ostringstream str;
 528                 CYOutput out(str, options);
 529                 Setup(out, driver, options);
 530                 out << *driver.program_;
 531                 code = str.str();
 532             }
 533         }
 534
 535         add_history(command_.c_str());
 536         ++histlines;
 537
 538         if (debug)
 539             std::cout << code << std::endl;
 540
 541         Run(client_, code, fout_, expand);
 542     }
 543
 544     if (append_history$ != NULL) {
 545         _syscall(close(_syscall(open(histfile, O_CREAT | O_WRONLY, 0600))));
 546         (*append_history$)(histlines, histfile);
 547     } else {
 548         write_history(histfile);
 549     }
 550
 551     fputs("\n", fout_);
 552     fflush(fout_);
 553 }
 554
 555 static void *Map(const char *path, size_t *psize) {
 556     int fd;
 557     _syscall(fd = open(path, O_RDONLY));
 558
 559     struct stat stat;
 560     _syscall(fstat(fd, &stat));
 561     size_t size(stat.st_size);
 562
 563     *psize = size;
 564
 565     void *base;
 566     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
 567
 568     _syscall(close(fd));
 569     return base;
 570 }
 571
 572 void InjectLibrary(pid_t pid);
 573
 574 int Main(int argc, char const * const argv[], char const * const envp[]) {
 575     bool tty(isatty(STDIN_FILENO));
 576     bool compile(false);
 577     CYOptions options;
 578
 579     append_history$ = (int (*)(int, const char *)) (dlsym(RTLD_DEFAULT, "append_history"));
 580
 581 #ifdef CY_ATTACH
 582     pid_t pid(_not(pid_t));
 583 #endif
 584
 585     CYPool pool;
 586     apr_getopt_t *state;
 587     _aprcall(apr_getopt_init(&state, pool, argc, argv));
 588
 589     for (;;) {
 590         char opt;
 591         const char *arg;
 592
 593         apr_status_t status(apr_getopt(state,
 594             "cg:n:"
 595 #ifdef CY_ATTACH
 596             "p:"
 597 #endif
 598             "s"
 599         , &opt, &arg));
 600
 601         switch (status) {
 602             case APR_EOF:
 603                 goto getopt;
 604             case APR_BADCH:
 605             case APR_BADARG:
 606                 fprintf(stderr,
 607                     "usage: cycript [-c]"
 608 #ifdef CY_ATTACH
 609                     " [-p <pid|name>]"
 610 #endif
 611                     " [<script> [<arg>...]]\n"
 612                 );
 613                 return 1;
 614             default:
 615                 _aprcall(status);
 616         }
 617
 618         switch (opt) {
 619             case 'c':
 620                 compile = true;
 621             break;
 622
 623             case 'g':
 624                 if (false);
 625                 else if (strcmp(arg, "rename") == 0)
 626                     options.verbose_ = true;
 627 #if YYDEBUG
 628                 else if (strcmp(arg, "bison") == 0)
 629                     bison_ = true;
 630 #endif
 631                 else {
 632                     fprintf(stderr, "invalid name for -g\n");
 633                     return 1;
 634                 }
 635             break;
 636
 637             case 'n':
 638                 if (false);
 639                 else if (strcmp(arg, "minify") == 0)
 640                     pretty_ = true;
 641                 else {
 642                     fprintf(stderr, "invalid name for -n\n");
 643                     return 1;
 644                 }
 645             break;
 646
 647 #ifdef CY_ATTACH
 648             case 'p': {
 649                 size_t size(strlen(arg));
 650                 char *end;
 651
 652                 pid = strtoul(arg, &end, 0);
 653                 if (arg + size != end) {
 654                     // XXX: arg needs to be escaped in some horrendous way of doom
 655                     const char *command(apr_psprintf(pool, "ps axc|sed -e '/^ *[0-9]/{s/^ *\\([0-9]*\\)\\( *[^ ]*\\)\\{3\\} *-*\\([^ ]*\\)/\\3 \\1/;/^%s /{s/^[^ ]* //;q;};};d'", arg));
 656
 657                     if (FILE *pids = popen(command, "r")) {
 658                         char value[32];
 659                         size = 0;
 660
 661                         for (;;) {
 662                             size_t read(fread(value + size, 1, sizeof(value) - size, pids));
 663                             if (read == 0)
 664                                 break;
 665                             else {
 666                                 size += read;
 667                                 if (size == sizeof(value)) {
 668                                     pid = _not(pid_t);
 669                                     goto fail;
 670                                 }
 671                             }
 672                         }
 673
 674                       size:
 675                         if (size == 0)
 676                             goto fail;
 677                         if (value[size - 1] == '\n') {
 678                             --size;
 679                             goto size;
 680                         }
 681
 682                         value[size] = '\0';
 683                         size = strlen(value);
 684                         pid = strtoul(value, &end, 0);
 685                         if (value + size != end) fail:
 686                             pid = _not(pid_t);
 687                         _syscall(pclose(pids));
 688                     }
 689
 690                     if (pid == _not(pid_t)) {
 691                         fprintf(stderr, "invalid pid for -p\n");
 692                         return 1;
 693                     }
 694                 }
 695             } break;
 696 #endif
 697
 698             case 's':
 699                 strict_ = true;
 700             break;
 701         }
 702     } getopt:;
 703
 704     const char *script;
 705     int ind(state->ind);
 706
 707 #ifdef CY_ATTACH
 708     if (pid != _not(pid_t) && ind < argc - 1) {
 709         fprintf(stderr, "-p cannot set argv\n");
 710         return 1;
 711     }
 712
 713     if (pid != _not(pid_t) && compile) {
 714         fprintf(stderr, "-p conflicts with -c\n");
 715         return 1;
 716     }
 717 #endif
 718
 719     if (ind == argc)
 720         script = NULL;
 721     else {
 722 #ifdef CY_EXECUTE
 723         // XXX: const_cast?! wtf gcc :(
 724         CYSetArgs(argc - ind - 1, const_cast<const char **>(argv + ind + 1));
 725 #endif
 726         script = argv[ind];
 727         if (strcmp(script, "-") == 0)
 728             script = NULL;
 729     }
 730
 731 #ifdef CY_ATTACH
 732     if (pid != _not(pid_t) && script == NULL && !tty) {
 733         fprintf(stderr, "non-terminal attaching to remote console\n");
 734         return 1;
 735     }
 736 #endif
 737
 738 #ifdef CY_ATTACH
 739     if (pid == _not(pid_t))
 740         client_ = -1;
 741     else {
 742         int server(_syscall(socket(PF_UNIX, SOCK_STREAM, 0))); try {
 743             struct sockaddr_un address;
 744             memset(&address, 0, sizeof(address));
 745             address.sun_family = AF_UNIX;
 746
 747             sprintf(address.sun_path, "/tmp/.s.cy.%u", getpid());
 748
 749             _syscall(bind(server, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
 750             _syscall(chmod(address.sun_path, 0777));
 751
 752             try {
 753                 _syscall(listen(server, 1));
 754                 InjectLibrary(pid);
 755                 client_ = _syscall(accept(server, NULL, NULL));
 756             } catch (...) {
 757                 // XXX: exception?
 758                 unlink(address.sun_path);
 759                 throw;
 760             }
 761         } catch (...) {
 762             _syscall(close(server));
 763             throw;
 764         }
 765     }
 766 #else
 767     client_ = -1;
 768 #endif
 769
 770     if (script == NULL && tty)
 771         Console(options);
 772     else {
 773         CYLocalPool pool;
 774         CYDriver driver(script ?: "<stdin>");
 775         cy::parser parser(driver);
 776         Setup(driver, parser);
 777
 778         char *start, *end;
 779
 780         if (script == NULL) {
 781             start = NULL;
 782             end = NULL;
 783
 784             driver.file_ = stdin;
 785         } else {
 786             size_t size;
 787             start = reinterpret_cast<char *>(Map(script, &size));
 788             end = start + size;
 789
 790             if (size >= 2 && start[0] == '#' && start[1] == '!') {
 791                 start += 2;
 792
 793                 if (void *line = memchr(start, '\n', end - start))
 794                     start = reinterpret_cast<char *>(line);
 795                 else
 796                     start = end;
 797             }
 798
 799             driver.data_ = start;
 800             driver.size_ = end - start;
 801         }
 802
 803         if (parser.parse() != 0 || !driver.errors_.empty()) {
 804             for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i)
 805                 std::cerr << i->location_.begin << ": " << i->message_ << std::endl;
 806         } else if (driver.program_ != NULL)
 807             if (client_ != -1) {
 808                 std::string code(start, end-start);
 809                 Run(client_, code, stdout);
 810             } else {
 811                 std::ostringstream str;
 812                 CYOutput out(str, options);
 813                 Setup(out, driver, options);
 814                 out << *driver.program_;
 815                 std::string code(str.str());
 816                 if (compile)
 817                     std::cout << code;
 818                 else
 819                     Run(client_, code, stdout);
 820             }
 821     }
 822
 823     return 0;
 824 }
 825
 826 int main(int argc, char const * const argv[], char const * const envp[]) {
 827     apr_status_t status(apr_app_initialize(&argc, &argv, &envp));
 828
 829     if (status != APR_SUCCESS) {
 830         fprintf(stderr, "apr_app_initialize() != APR_SUCCESS\n");
 831         return 1;
 832     } else try {
 833         return Main(argc, argv, envp);
 834     } catch (const CYException &error) {
 835         CYPool pool;
 836         fprintf(stderr, "%s\n", error.PoolCString(pool));
 837         return 1;
 838     }
 839 }