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::ostringstream str;
 206     str << '(' << code << ')';
 207     std::string string(str.str());
 208
 209     CYDriver driver;
 210     driver.data_ = string.c_str();
 211     driver.size_ = string.size();
 212
 213     cy::parser parser(driver);
 214     Setup(driver, parser);
 215
 216     if (parser.parse() != 0 || !driver.errors_.empty())
 217         return NULL;
 218
 219     CYOptions options;
 220     CYContext context(options);
 221
 222     // XXX: this could be replaced with a CYStatement::Primitive()
 223     if (CYExpress *express = dynamic_cast<CYExpress *>(driver.program_->statements_))
 224         return express->expression_->Primitive(context);
 225
 226     return NULL;
 227 }
 228
 229 static int client_;
 230
 231 static char **Complete(const char *word, int start, int end) {
 232     rl_attempted_completion_over = TRUE;
 233
 234     CYLocalPool pool;
 235     CYDriver driver;
 236     cy::parser parser(driver);
 237     Setup(driver, parser);
 238
 239     std::string line(rl_line_buffer, start);
 240     std::string command(command_ + line);
 241
 242     driver.data_ = command.c_str();
 243     driver.size_ = command.size();
 244
 245     driver.auto_ = true;
 246
 247     if (parser.parse() != 0 || !driver.errors_.empty())
 248         return NULL;
 249
 250     if (driver.mode_ == CYDriver::AutoNone)
 251         return NULL;
 252
 253     CYExpression *expression;
 254
 255     CYOptions options;
 256     CYContext context(options);
 257
 258     std::ostringstream prefix;
 259
 260     switch (driver.mode_) {
 261         case CYDriver::AutoPrimary:
 262             expression = $ CYThis();
 263         break;
 264
 265         case CYDriver::AutoDirect:
 266             expression = driver.context_;
 267         break;
 268
 269         case CYDriver::AutoIndirect:
 270             expression = $ CYIndirect(driver.context_);
 271         break;
 272
 273         case CYDriver::AutoMessage: {
 274             CYDriver::Context &thing(driver.contexts_.back());
 275             expression = $M($C1($V("object_getClass"), thing.context_), $S("messages"));
 276             for (CYDriver::Context::Words::const_iterator part(thing.words_.begin()); part != thing.words_.end(); ++part)
 277                 prefix << (*part)->word_ << ':';
 278         } break;
 279
 280         default:
 281             _assert(false);
 282     }
 283
 284     std::string begin(prefix.str());
 285
 286     driver.program_ = $ CYProgram($ CYExpress($C3(ParseExpression(
 287     "   function(object, prefix, word) {\n"
 288     "       var names = [];\n"
 289     "       var before = prefix.length;\n"
 290     "       prefix += word;\n"
 291     "       var entire = prefix.length;\n"
 292     "       for (name in object)\n"
 293     "           if (name.substring(0, entire) == prefix)\n"
 294     "               names.push(name.substr(before));\n"
 295     "       return names;\n"
 296     "   }\n"
 297     ), expression, $S(begin.c_str()), $S(word))));
 298
 299     driver.program_->Replace(context);
 300
 301     std::ostringstream str;
 302     CYOutput out(str, options);
 303     out << *driver.program_;
 304
 305     std::string code(str.str());
 306     CYUTF8String json(Run(pool, client_, code));
 307
 308     CYExpression *result(ParseExpression(json));
 309     if (result == NULL)
 310         return NULL;
 311
 312     CYArray *array(dynamic_cast<CYArray *>(result));
 313
 314     if (array == NULL) {
 315         fprintf(fout_, "\n");
 316         Output(json, fout_);
 317         rl_forced_update_display();
 318         return NULL;
 319     }
 320
 321     // XXX: use an std::set?
 322     typedef std::vector<std::string> Completions;
 323     Completions completions;
 324
 325     std::string common;
 326     bool rest(false);
 327
 328     CYForEach (element, array->elements_) {
 329         CYString *string(dynamic_cast<CYString *>(element->value_));
 330         _assert(string != NULL);
 331
 332         std::string completion;
 333         if (string->size_ != 0)
 334             completion.assign(string->value_, string->size_);
 335         else if (driver.mode_ == CYDriver::AutoMessage)
 336             completion = "]";
 337         else
 338             continue;
 339
 340         completions.push_back(completion);
 341
 342         if (!rest) {
 343             common = completion;
 344             rest = true;
 345         } else {
 346             size_t limit(completion.size()), size(common.size());
 347             if (size > limit)
 348                 common = common.substr(0, limit);
 349             else
 350                 limit = size;
 351             for (limit = 0; limit != size; ++limit)
 352                 if (common[limit] != completion[limit])
 353                     break;
 354             if (limit != size)
 355                 common = common.substr(0, limit);
 356         }
 357     }
 358
 359     size_t count(completions.size());
 360     if (count == 0)
 361         return NULL;
 362
 363     size_t colon(common.find(':'));
 364     if (colon != std::string::npos)
 365         common = common.substr(0, colon + 1);
 366     if (completions.size() == 1)
 367         common += ' ';
 368
 369     char **results(reinterpret_cast<char **>(malloc(sizeof(char *) * (count + 2))));
 370
 371     results[0] = strdup(common.c_str());
 372     size_t index(0);
 373     for (Completions::const_iterator i(completions.begin()); i != completions.end(); ++i)
 374         results[++index] = strdup(i->c_str());
 375     results[count + 1] = NULL;
 376
 377     return results;
 378 }
 379
 380 // need char *, not const char *
 381 static char name_[] = "cycript";
 382 static char break_[] = " \t\n\"\\'`@$><=;|&{(" ")}" ".:[]";
 383
 384 static void Console(CYOptions &options) {
 385     CYPool pool;
 386
 387     passwd *passwd;
 388     if (const char *username = getenv("LOGNAME"))
 389         passwd = getpwnam(username);
 390     else
 391         passwd = getpwuid(getuid());
 392
 393     const char *basedir(apr_psprintf(pool, "%s/.cycript", passwd->pw_dir));
 394     const char *histfile(apr_psprintf(pool, "%s/history", basedir));
 395     size_t histlines(0);
 396
 397     rl_initialize();
 398     rl_readline_name = name_;
 399
 400     mkdir(basedir, 0700);
 401     read_history(histfile);
 402
 403     bool bypass(false);
 404     bool debug(false);
 405     bool expand(false);
 406
 407     fout_ = stdout;
 408
 409     // rl_completer_word_break_characters is broken in libedit
 410     rl_basic_word_break_characters = break_;
 411
 412     rl_completer_word_break_characters = break_;
 413     rl_attempted_completion_function = &Complete;
 414     rl_bind_key('\t', rl_complete);
 415
 416     struct sigaction action;
 417     sigemptyset(&action.sa_mask);
 418     action.sa_handler = &sigint;
 419     action.sa_flags = 0;
 420     sigaction(SIGINT, &action, NULL);
 421
 422     restart: for (;;) {
 423         command_.clear();
 424         std::vector<std::string> lines;
 425
 426         bool extra(false);
 427         const char *prompt("cy# ");
 428
 429         if (setjmp(ctrlc_) != 0) {
 430             mode_ = Working;
 431             fputs("\n", fout_);
 432             fflush(fout_);
 433             goto restart;
 434         }
 435
 436       read:
 437         mode_ = Parsing;
 438         char *line(readline(prompt));
 439         mode_ = Working;
 440         if (line == NULL)
 441             break;
 442         if (line[0] == '\0')
 443             goto read;
 444
 445         if (!extra) {
 446             extra = true;
 447             if (line[0] == '?') {
 448                 std::string data(line + 1);
 449                 if (data == "bypass") {
 450                     bypass = !bypass;
 451                     fprintf(fout_, "bypass == %s\n", bypass ? "true" : "false");
 452                     fflush(fout_);
 453                 } else if (data == "debug") {
 454                     debug = !debug;
 455                     fprintf(fout_, "debug == %s\n", debug ? "true" : "false");
 456                     fflush(fout_);
 457                 } else if (data == "expand") {
 458                     expand = !expand;
 459                     fprintf(fout_, "expand == %s\n", expand ? "true" : "false");
 460                     fflush(fout_);
 461                 }
 462                 add_history(line);
 463                 ++histlines;
 464                 goto restart;
 465             }
 466         }
 467
 468         command_ += line;
 469
 470         char *begin(line), *end(line + strlen(line));
 471         while (char *nl = reinterpret_cast<char *>(memchr(begin, '\n', end - begin))) {
 472             *nl = '\0';
 473             lines.push_back(begin);
 474             begin = nl + 1;
 475         }
 476
 477         lines.push_back(begin);
 478
 479         free(line);
 480
 481         std::string code;
 482
 483         if (bypass)
 484             code = command_;
 485         else {
 486             CYLocalPool pool;
 487             CYDriver driver;
 488             cy::parser parser(driver);
 489             Setup(driver, parser);
 490
 491             driver.data_ = command_.c_str();
 492             driver.size_ = command_.size();
 493
 494             if (parser.parse() != 0 || !driver.errors_.empty()) {
 495                 for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
 496                     cy::position begin(error->location_.begin);
 497                     if (begin.line != lines.size() || begin.column < lines.back().size() || error->warning_) {
 498                         cy::position end(error->location_.end);
 499
 500                         if (begin.line != lines.size()) {
 501                             std::cerr << "  | ";
 502                             std::cerr << lines[begin.line - 1] << std::endl;
 503                         }
 504
 505                         std::cerr << "....";
 506                         for (size_t i(0); i != begin.column; ++i)
 507                             std::cerr << '.';
 508                         if (begin.line != end.line || begin.column == end.column)
 509                             std::cerr << '^';
 510                         else for (size_t i(0), e(end.column - begin.column); i != e; ++i)
 511                             std::cerr << '^';
 512                         std::cerr << std::endl;
 513
 514                         std::cerr << "  | ";
 515                         std::cerr << error->message_ << std::endl;
 516
 517                         add_history(command_.c_str());
 518                         ++histlines;
 519                         goto restart;
 520                     }
 521                 }
 522
 523                 driver.errors_.clear();
 524
 525                 command_ += '\n';
 526                 prompt = "cy> ";
 527                 goto read;
 528             }
 529
 530             if (driver.program_ == NULL)
 531                 goto restart;
 532
 533             if (client_ != -1)
 534                 code = command_;
 535             else {
 536                 std::ostringstream str;
 537                 CYOutput out(str, options);
 538                 Setup(out, driver, options);
 539                 out << *driver.program_;
 540                 code = str.str();
 541             }
 542         }
 543
 544         add_history(command_.c_str());
 545         ++histlines;
 546
 547         if (debug)
 548             std::cout << code << std::endl;
 549
 550         Run(client_, code, fout_, expand);
 551     }
 552
 553     if (append_history$ != NULL) {
 554         _syscall(close(_syscall(open(histfile, O_CREAT | O_WRONLY, 0600))));
 555         (*append_history$)(histlines, histfile);
 556     } else {
 557         write_history(histfile);
 558     }
 559
 560     fputs("\n", fout_);
 561     fflush(fout_);
 562 }
 563
 564 static void *Map(const char *path, size_t *psize) {
 565     int fd;
 566     _syscall(fd = open(path, O_RDONLY));
 567
 568     struct stat stat;
 569     _syscall(fstat(fd, &stat));
 570     size_t size(stat.st_size);
 571
 572     *psize = size;
 573
 574     void *base;
 575     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
 576
 577     _syscall(close(fd));
 578     return base;
 579 }
 580
 581 void InjectLibrary(pid_t pid);
 582
 583 int Main(int argc, char const * const argv[], char const * const envp[]) {
 584     bool tty(isatty(STDIN_FILENO));
 585     bool compile(false);
 586     CYOptions options;
 587
 588     append_history$ = (int (*)(int, const char *)) (dlsym(RTLD_DEFAULT, "append_history"));
 589
 590 #ifdef CY_ATTACH
 591     pid_t pid(_not(pid_t));
 592 #endif
 593
 594     CYPool pool;
 595     apr_getopt_t *state;
 596     _aprcall(apr_getopt_init(&state, pool, argc, argv));
 597
 598     for (;;) {
 599         char opt;
 600         const char *arg;
 601
 602         apr_status_t status(apr_getopt(state,
 603             "cg:n:"
 604 #ifdef CY_ATTACH
 605             "p:"
 606 #endif
 607             "s"
 608         , &opt, &arg));
 609
 610         switch (status) {
 611             case APR_EOF:
 612                 goto getopt;
 613             case APR_BADCH:
 614             case APR_BADARG:
 615                 fprintf(stderr,
 616                     "usage: cycript [-c]"
 617 #ifdef CY_ATTACH
 618                     " [-p <pid|name>]"
 619 #endif
 620                     " [<script> [<arg>...]]\n"
 621                 );
 622                 return 1;
 623             default:
 624                 _aprcall(status);
 625         }
 626
 627         switch (opt) {
 628             case 'c':
 629                 compile = true;
 630             break;
 631
 632             case 'g':
 633                 if (false);
 634                 else if (strcmp(arg, "rename") == 0)
 635                     options.verbose_ = true;
 636 #if YYDEBUG
 637                 else if (strcmp(arg, "bison") == 0)
 638                     bison_ = true;
 639 #endif
 640                 else {
 641                     fprintf(stderr, "invalid name for -g\n");
 642                     return 1;
 643                 }
 644             break;
 645
 646             case 'n':
 647                 if (false);
 648                 else if (strcmp(arg, "minify") == 0)
 649                     pretty_ = true;
 650                 else {
 651                     fprintf(stderr, "invalid name for -n\n");
 652                     return 1;
 653                 }
 654             break;
 655
 656 #ifdef CY_ATTACH
 657             case 'p': {
 658                 size_t size(strlen(arg));
 659                 char *end;
 660
 661                 pid = strtoul(arg, &end, 0);
 662                 if (arg + size != end) {
 663                     // XXX: arg needs to be escaped in some horrendous way of doom
 664                     const char *command(apr_psprintf(pool, "ps axc|sed -e '/^ *[0-9]/{s/^ *\\([0-9]*\\)\\( *[^ ]*\\)\\{3\\} *-*\\([^ ]*\\)/\\3 \\1/;/^%s /{s/^[^ ]* //;q;};};d'", arg));
 665
 666                     if (FILE *pids = popen(command, "r")) {
 667                         char value[32];
 668                         size = 0;
 669
 670                         for (;;) {
 671                             size_t read(fread(value + size, 1, sizeof(value) - size, pids));
 672                             if (read == 0)
 673                                 break;
 674                             else {
 675                                 size += read;
 676                                 if (size == sizeof(value)) {
 677                                     pid = _not(pid_t);
 678                                     goto fail;
 679                                 }
 680                             }
 681                         }
 682
 683                       size:
 684                         if (size == 0)
 685                             goto fail;
 686                         if (value[size - 1] == '\n') {
 687                             --size;
 688                             goto size;
 689                         }
 690
 691                         value[size] = '\0';
 692                         size = strlen(value);
 693                         pid = strtoul(value, &end, 0);
 694                         if (value + size != end) fail:
 695                             pid = _not(pid_t);
 696                         _syscall(pclose(pids));
 697                     }
 698
 699                     if (pid == _not(pid_t)) {
 700                         fprintf(stderr, "invalid pid for -p\n");
 701                         return 1;
 702                     }
 703                 }
 704             } break;
 705 #endif
 706
 707             case 's':
 708                 strict_ = true;
 709             break;
 710         }
 711     } getopt:;
 712
 713     const char *script;
 714     int ind(state->ind);
 715
 716 #ifdef CY_ATTACH
 717     if (pid != _not(pid_t) && ind < argc - 1) {
 718         fprintf(stderr, "-p cannot set argv\n");
 719         return 1;
 720     }
 721
 722     if (pid != _not(pid_t) && compile) {
 723         fprintf(stderr, "-p conflicts with -c\n");
 724         return 1;
 725     }
 726 #endif
 727
 728     if (ind == argc)
 729         script = NULL;
 730     else {
 731 #ifdef CY_EXECUTE
 732         // XXX: const_cast?! wtf gcc :(
 733         CYSetArgs(argc - ind - 1, const_cast<const char **>(argv + ind + 1));
 734 #endif
 735         script = argv[ind];
 736         if (strcmp(script, "-") == 0)
 737             script = NULL;
 738     }
 739
 740 #ifdef CY_ATTACH
 741     if (pid != _not(pid_t) && script == NULL && !tty) {
 742         fprintf(stderr, "non-terminal attaching to remote console\n");
 743         return 1;
 744     }
 745 #endif
 746
 747 #ifdef CY_ATTACH
 748     if (pid == _not(pid_t))
 749         client_ = -1;
 750     else {
 751         int server(_syscall(socket(PF_UNIX, SOCK_STREAM, 0))); try {
 752             struct sockaddr_un address;
 753             memset(&address, 0, sizeof(address));
 754             address.sun_family = AF_UNIX;
 755
 756             sprintf(address.sun_path, "/tmp/.s.cy.%u", getpid());
 757
 758             _syscall(bind(server, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
 759             _syscall(chmod(address.sun_path, 0777));
 760
 761             try {
 762                 _syscall(listen(server, 1));
 763                 InjectLibrary(pid);
 764                 client_ = _syscall(accept(server, NULL, NULL));
 765             } catch (...) {
 766                 // XXX: exception?
 767                 unlink(address.sun_path);
 768                 throw;
 769             }
 770         } catch (...) {
 771             _syscall(close(server));
 772             throw;
 773         }
 774     }
 775 #else
 776     client_ = -1;
 777 #endif
 778
 779     if (script == NULL && tty)
 780         Console(options);
 781     else {
 782         CYLocalPool pool;
 783         CYDriver driver(script ?: "<stdin>");
 784         cy::parser parser(driver);
 785         Setup(driver, parser);
 786
 787         char *start, *end;
 788
 789         if (script == NULL) {
 790             start = NULL;
 791             end = NULL;
 792
 793             driver.file_ = stdin;
 794         } else {
 795             size_t size;
 796             start = reinterpret_cast<char *>(Map(script, &size));
 797             end = start + size;
 798
 799             if (size >= 2 && start[0] == '#' && start[1] == '!') {
 800                 start += 2;
 801
 802                 if (void *line = memchr(start, '\n', end - start))
 803                     start = reinterpret_cast<char *>(line);
 804                 else
 805                     start = end;
 806             }
 807
 808             driver.data_ = start;
 809             driver.size_ = end - start;
 810         }
 811
 812         if (parser.parse() != 0 || !driver.errors_.empty()) {
 813             for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i)
 814                 std::cerr << i->location_.begin << ": " << i->message_ << std::endl;
 815         } else if (driver.program_ != NULL)
 816             if (client_ != -1) {
 817                 std::string code(start, end-start);
 818                 Run(client_, code, stdout);
 819             } else {
 820                 std::ostringstream str;
 821                 CYOutput out(str, options);
 822                 Setup(out, driver, options);
 823                 out << *driver.program_;
 824                 std::string code(str.str());
 825                 if (compile)
 826                     std::cout << code;
 827                 else
 828                     Run(client_, code, stdout);
 829             }
 830     }
 831
 832     return 0;
 833 }
 834
 835 int main(int argc, char const * const argv[], char const * const envp[]) {
 836     apr_status_t status(apr_app_initialize(&argc, &argv, &envp));
 837
 838     if (status != APR_SUCCESS) {
 839         fprintf(stderr, "apr_app_initialize() != APR_SUCCESS\n");
 840         return 1;
 841     } else try {
 842         return Main(argc, argv, envp);
 843     } catch (const CYException &error) {
 844         CYPool pool;
 845         fprintf(stderr, "%s\n", error.PoolCString(pool));
 846         return 1;
 847     }
 848 }