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 static std::ostream *out_;
 156
 157 static void Write(bool syntax, const char *data, size_t size, std::ostream &out) {
 158     if (syntax)
 159         CYLexerHighlight(data, size, out);
 160     else
 161         out.write(data, size);
 162 }
 163
 164 static void Output(bool syntax, CYUTF8String json, std::ostream *out, bool expand = false) {
 165     const char *data(json.data);
 166     size_t size(json.size);
 167
 168     if (data == NULL || out == NULL)
 169         return;
 170
 171     if (!expand ||
 172         data[0] != '@' && data[0] != '"' && data[0] != '\'' ||
 173         data[0] == '@' && data[1] != '"' && data[1] != '\''
 174     )
 175         Write(syntax, data, size, *out);
 176     else for (size_t i(0); i != size; ++i)
 177         if (data[i] != '\\')
 178             *out << data[i];
 179         else switch(data[++i]) {
 180             case '\0': goto done;
 181             case '\\': *out << '\\'; break;
 182             case '\'': *out << '\''; break;
 183             case '"': *out << '"'; break;
 184             case 'b': *out << '\b'; break;
 185             case 'f': *out << '\f'; break;
 186             case 'n': *out << '\n'; break;
 187             case 'r': *out << '\r'; break;
 188             case 't': *out << '\t'; break;
 189             case 'v': *out << '\v'; break;
 190             default: *out << '\\'; --i; break;
 191         }
 192
 193   done:
 194     *out << std::endl;
 195 }
 196
 197 static void Run(int client, bool syntax, const char *data, size_t size, std::ostream *out = NULL, bool expand = false) {
 198     CYPool pool;
 199     Output(syntax, Run(pool, client, CYUTF8String(data, size)), out, expand);
 200 }
 201
 202 static void Run(int client, bool syntax, std::string &code, std::ostream *out = NULL, bool expand = false) {
 203     Run(client, syntax, code.c_str(), code.size(), out, expand);
 204 }
 205
 206 int (*append_history$)(int, const char *);
 207
 208 static std::string command_;
 209
 210 static CYExpression *ParseExpression(CYUTF8String code) {
 211     std::stringstream stream;
 212     stream << '(' << code << ')';
 213     CYDriver driver(stream);
 214
 215     cy::parser parser(driver);
 216     Setup(driver, parser);
 217
 218     if (parser.parse() != 0 || !driver.errors_.empty())
 219         return NULL;
 220
 221     CYOptions options;
 222     CYContext context(options);
 223
 224     // XXX: this could be replaced with a CYStatement::Primitive()
 225     if (CYExpress *express = dynamic_cast<CYExpress *>(driver.program_->statements_))
 226         return express->expression_->Primitive(context);
 227
 228     return NULL;
 229 }
 230
 231 static int client_;
 232
 233 static char **Complete(const char *word, int start, int end) {
 234     rl_attempted_completion_over = TRUE;
 235
 236     CYLocalPool pool;
 237
 238     std::string line(rl_line_buffer, start);
 239     std::istringstream stream(command_ + line);
 240     CYDriver driver(stream);
 241
 242     driver.auto_ = true;
 243
 244     cy::parser parser(driver);
 245     Setup(driver, parser);
 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     // XXX: if this fails we should not try to parse it
 308
 309     CYExpression *result(ParseExpression(json));
 310     if (result == NULL)
 311         return NULL;
 312
 313     CYArray *array(dynamic_cast<CYArray *>(result));
 314
 315     if (array == NULL) {
 316         *out_ << '\n';
 317         Output(false, json, out_);
 318         rl_forced_update_display();
 319         return NULL;
 320     }
 321
 322     // XXX: use an std::set?
 323     typedef std::vector<std::string> Completions;
 324     Completions completions;
 325
 326     std::string common;
 327     bool rest(false);
 328
 329     CYForEach (element, array->elements_) {
 330         CYString *string(dynamic_cast<CYString *>(element->value_));
 331         _assert(string != NULL);
 332
 333         std::string completion;
 334         if (string->size_ != 0)
 335             completion.assign(string->value_, string->size_);
 336         else if (driver.mode_ == CYDriver::AutoMessage)
 337             completion = "]";
 338         else
 339             continue;
 340
 341         completions.push_back(completion);
 342
 343         if (!rest) {
 344             common = completion;
 345             rest = true;
 346         } else {
 347             size_t limit(completion.size()), size(common.size());
 348             if (size > limit)
 349                 common = common.substr(0, limit);
 350             else
 351                 limit = size;
 352             for (limit = 0; limit != size; ++limit)
 353                 if (common[limit] != completion[limit])
 354                     break;
 355             if (limit != size)
 356                 common = common.substr(0, limit);
 357         }
 358     }
 359
 360     size_t count(completions.size());
 361     if (count == 0)
 362         return NULL;
 363
 364     size_t colon(common.find(':'));
 365     if (colon != std::string::npos)
 366         common = common.substr(0, colon + 1);
 367     if (completions.size() == 1)
 368         common += ' ';
 369
 370     char **results(reinterpret_cast<char **>(malloc(sizeof(char *) * (count + 2))));
 371
 372     results[0] = strdup(common.c_str());
 373     size_t index(0);
 374     for (Completions::const_iterator i(completions.begin()); i != completions.end(); ++i)
 375         results[++index] = strdup(i->c_str());
 376     results[count + 1] = NULL;
 377
 378     return results;
 379 }
 380
 381 // need char *, not const char *
 382 static char name_[] = "cycript";
 383 static char break_[] = " \t\n\"\\'`@$><=;|&{(" ")}" ".:[]";
 384
 385 static void Console(CYOptions &options) {
 386     CYPool pool;
 387
 388     passwd *passwd;
 389     if (const char *username = getenv("LOGNAME"))
 390         passwd = getpwnam(username);
 391     else
 392         passwd = getpwuid(getuid());
 393
 394     const char *basedir(apr_psprintf(pool, "%s/.cycript", passwd->pw_dir));
 395     const char *histfile(apr_psprintf(pool, "%s/history", basedir));
 396     size_t histlines(0);
 397
 398     rl_initialize();
 399     rl_readline_name = name_;
 400
 401     mkdir(basedir, 0700);
 402     read_history(histfile);
 403
 404     bool bypass(false);
 405     bool debug(false);
 406     bool expand(false);
 407     bool syntax(false);
 408
 409     out_ = &std::cout;
 410
 411     // rl_completer_word_break_characters is broken in libedit
 412     rl_basic_word_break_characters = break_;
 413
 414     rl_completer_word_break_characters = break_;
 415     rl_attempted_completion_function = &Complete;
 416     rl_bind_key('\t', rl_complete);
 417
 418     struct sigaction action;
 419     sigemptyset(&action.sa_mask);
 420     action.sa_handler = &sigint;
 421     action.sa_flags = 0;
 422     sigaction(SIGINT, &action, NULL);
 423
 424     restart: for (;;) {
 425         command_.clear();
 426         std::vector<std::string> lines;
 427
 428         bool extra(false);
 429         const char *prompt("cy# ");
 430
 431         if (setjmp(ctrlc_) != 0) {
 432             mode_ = Working;
 433             *out_ << std::endl;
 434             goto restart;
 435         }
 436
 437       read:
 438         mode_ = Parsing;
 439         char *line(readline(prompt));
 440         mode_ = Working;
 441         if (line == NULL)
 442             break;
 443         if (line[0] == '\0')
 444             goto read;
 445
 446         if (!extra) {
 447             extra = true;
 448             if (line[0] == '?') {
 449                 std::string data(line + 1);
 450                 if (data == "bypass") {
 451                     bypass = !bypass;
 452                     *out_ << "bypass == " << (bypass ? "true" : "false") << std::endl;
 453                 } else if (data == "debug") {
 454                     debug = !debug;
 455                     *out_ << "debug == " << (debug ? "true" : "false") << std::endl;
 456                 } else if (data == "expand") {
 457                     expand = !expand;
 458                     *out_ << "expand == " << (expand ? "true" : "false") << std::endl;
 459                 } else if (data == "syntax") {
 460                     syntax = !syntax;
 461                     *out_ << "syntax == " << (syntax ? "true" : "false") << std::endl;
 462                 }
 463                 add_history(line);
 464                 ++histlines;
 465                 goto restart;
 466             }
 467         }
 468
 469         command_ += line;
 470
 471         char *begin(line), *end(line + strlen(line));
 472         while (char *nl = reinterpret_cast<char *>(memchr(begin, '\n', end - begin))) {
 473             *nl = '\0';
 474             lines.push_back(begin);
 475             begin = nl + 1;
 476         }
 477
 478         lines.push_back(begin);
 479
 480         free(line);
 481
 482         std::string code;
 483
 484         if (bypass)
 485             code = command_;
 486         else {
 487             CYLocalPool pool;
 488
 489             std::istringstream stream(command_);
 490             CYDriver driver(stream);
 491
 492             cy::parser parser(driver);
 493             Setup(driver, parser);
 494
 495             if (parser.parse() != 0 || !driver.errors_.empty()) {
 496                 for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
 497                     cy::position begin(error->location_.begin);
 498                     if (begin.line != lines.size() || begin.column < lines.back().size() || error->warning_) {
 499                         cy::position end(error->location_.end);
 500
 501                         if (begin.line != lines.size()) {
 502                             std::cerr << "  | ";
 503                             std::cerr << lines[begin.line - 1] << std::endl;
 504                         }
 505
 506                         std::cerr << "....";
 507                         for (size_t i(0); i != begin.column; ++i)
 508                             std::cerr << '.';
 509                         if (begin.line != end.line || begin.column == end.column)
 510                             std::cerr << '^';
 511                         else for (size_t i(0), e(end.column - begin.column); i != e; ++i)
 512                             std::cerr << '^';
 513                         std::cerr << std::endl;
 514
 515                         std::cerr << "  | ";
 516                         std::cerr << error->message_ << std::endl;
 517
 518                         add_history(command_.c_str());
 519                         ++histlines;
 520                         goto restart;
 521                     }
 522                 }
 523
 524                 driver.errors_.clear();
 525
 526                 command_ += '\n';
 527                 prompt = "cy> ";
 528                 goto read;
 529             }
 530
 531             if (driver.program_ == NULL)
 532                 goto restart;
 533
 534             if (client_ != -1)
 535                 code = command_;
 536             else {
 537                 std::ostringstream str;
 538                 CYOutput out(str, options);
 539                 Setup(out, driver, options);
 540                 out << *driver.program_;
 541                 code = str.str();
 542             }
 543         }
 544
 545         add_history(command_.c_str());
 546         ++histlines;
 547
 548         if (debug) {
 549             Write(syntax, code.c_str(), code.size(), std::cout);
 550             std::cout << std::endl;
 551         }
 552
 553         Run(client_, syntax, code, out_, expand);
 554     }
 555
 556     if (append_history$ != NULL) {
 557         _syscall(close(_syscall(open(histfile, O_CREAT | O_WRONLY, 0600))));
 558         (*append_history$)(histlines, histfile);
 559     } else {
 560         write_history(histfile);
 561     }
 562
 563     *out_ << std::endl;
 564 }
 565
 566 static void *Map(const char *path, size_t *psize) {
 567     int fd;
 568     _syscall(fd = open(path, O_RDONLY));
 569
 570     struct stat stat;
 571     _syscall(fstat(fd, &stat));
 572     size_t size(stat.st_size);
 573
 574     *psize = size;
 575
 576     void *base;
 577     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
 578
 579     _syscall(close(fd));
 580     return base;
 581 }
 582
 583 void InjectLibrary(pid_t pid);
 584
 585 int Main(int argc, char const * const argv[], char const * const envp[]) {
 586     bool tty(isatty(STDIN_FILENO));
 587     bool compile(false);
 588     CYOptions options;
 589
 590     append_history$ = (int (*)(int, const char *)) (dlsym(RTLD_DEFAULT, "append_history"));
 591
 592 #ifdef CY_ATTACH
 593     pid_t pid(_not(pid_t));
 594 #endif
 595
 596     CYPool pool;
 597     apr_getopt_t *state;
 598     _aprcall(apr_getopt_init(&state, pool, argc, argv));
 599
 600     for (;;) {
 601         char opt;
 602         const char *arg;
 603
 604         apr_status_t status(apr_getopt(state,
 605             "cg:n:"
 606 #ifdef CY_ATTACH
 607             "p:"
 608 #endif
 609             "s"
 610         , &opt, &arg));
 611
 612         switch (status) {
 613             case APR_EOF:
 614                 goto getopt;
 615             case APR_BADCH:
 616             case APR_BADARG:
 617                 fprintf(stderr,
 618                     "usage: cycript [-c]"
 619 #ifdef CY_ATTACH
 620                     " [-p <pid|name>]"
 621 #endif
 622                     " [<script> [<arg>...]]\n"
 623                 );
 624                 return 1;
 625             default:
 626                 _aprcall(status);
 627         }
 628
 629         switch (opt) {
 630             case 'c':
 631                 compile = true;
 632             break;
 633
 634             case 'g':
 635                 if (false);
 636                 else if (strcmp(arg, "rename") == 0)
 637                     options.verbose_ = true;
 638 #if YYDEBUG
 639                 else if (strcmp(arg, "bison") == 0)
 640                     bison_ = true;
 641 #endif
 642                 else {
 643                     fprintf(stderr, "invalid name for -g\n");
 644                     return 1;
 645                 }
 646             break;
 647
 648             case 'n':
 649                 if (false);
 650                 else if (strcmp(arg, "minify") == 0)
 651                     pretty_ = true;
 652                 else {
 653                     fprintf(stderr, "invalid name for -n\n");
 654                     return 1;
 655                 }
 656             break;
 657
 658 #ifdef CY_ATTACH
 659             case 'p': {
 660                 size_t size(strlen(arg));
 661                 char *end;
 662
 663                 pid = strtoul(arg, &end, 0);
 664                 if (arg + size != end) {
 665                     // XXX: arg needs to be escaped in some horrendous way of doom
 666                     const char *command(apr_psprintf(pool, "ps axc|sed -e '/^ *[0-9]/{s/^ *\\([0-9]*\\)\\( *[^ ]*\\)\\{3\\} *-*\\([^ ]*\\)/\\3 \\1/;/^%s /{s/^[^ ]* //;q;};};d'", arg));
 667
 668                     if (FILE *pids = popen(command, "r")) {
 669                         char value[32];
 670                         size = 0;
 671
 672                         for (;;) {
 673                             size_t read(fread(value + size, 1, sizeof(value) - size, pids));
 674                             if (read == 0)
 675                                 break;
 676                             else {
 677                                 size += read;
 678                                 if (size == sizeof(value)) {
 679                                     pid = _not(pid_t);
 680                                     goto fail;
 681                                 }
 682                             }
 683                         }
 684
 685                       size:
 686                         if (size == 0)
 687                             goto fail;
 688                         if (value[size - 1] == '\n') {
 689                             --size;
 690                             goto size;
 691                         }
 692
 693                         value[size] = '\0';
 694                         size = strlen(value);
 695                         pid = strtoul(value, &end, 0);
 696                         if (value + size != end) fail:
 697                             pid = _not(pid_t);
 698                         _syscall(pclose(pids));
 699                     }
 700
 701                     if (pid == _not(pid_t)) {
 702                         fprintf(stderr, "invalid pid for -p\n");
 703                         return 1;
 704                     }
 705                 }
 706             } break;
 707 #endif
 708
 709             case 's':
 710                 strict_ = true;
 711             break;
 712         }
 713     } getopt:;
 714
 715     const char *script;
 716     int ind(state->ind);
 717
 718 #ifdef CY_ATTACH
 719     if (pid != _not(pid_t) && ind < argc - 1) {
 720         fprintf(stderr, "-p cannot set argv\n");
 721         return 1;
 722     }
 723
 724     if (pid != _not(pid_t) && compile) {
 725         fprintf(stderr, "-p conflicts with -c\n");
 726         return 1;
 727     }
 728 #endif
 729
 730     if (ind == argc)
 731         script = NULL;
 732     else {
 733 #ifdef CY_EXECUTE
 734         // XXX: const_cast?! wtf gcc :(
 735         CYSetArgs(argc - ind - 1, const_cast<const char **>(argv + ind + 1));
 736 #endif
 737         script = argv[ind];
 738         if (strcmp(script, "-") == 0)
 739             script = NULL;
 740     }
 741
 742 #ifdef CY_ATTACH
 743     if (pid != _not(pid_t) && script == NULL && !tty) {
 744         fprintf(stderr, "non-terminal attaching to remote console\n");
 745         return 1;
 746     }
 747 #endif
 748
 749 #ifdef CY_ATTACH
 750     if (pid == _not(pid_t))
 751         client_ = -1;
 752     else {
 753         int server(_syscall(socket(PF_UNIX, SOCK_STREAM, 0))); try {
 754             struct sockaddr_un address;
 755             memset(&address, 0, sizeof(address));
 756             address.sun_family = AF_UNIX;
 757
 758             sprintf(address.sun_path, "/tmp/.s.cy.%u", getpid());
 759
 760             _syscall(bind(server, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
 761             _syscall(chmod(address.sun_path, 0777));
 762
 763             try {
 764                 _syscall(listen(server, 1));
 765                 InjectLibrary(pid);
 766                 client_ = _syscall(accept(server, NULL, NULL));
 767             } catch (...) {
 768                 // XXX: exception?
 769                 unlink(address.sun_path);
 770                 throw;
 771             }
 772         } catch (...) {
 773             _syscall(close(server));
 774             throw;
 775         }
 776     }
 777 #else
 778     client_ = -1;
 779 #endif
 780
 781     if (script == NULL && tty)
 782         Console(options);
 783     else {
 784         CYLocalPool pool;
 785
 786         char *start, *end;
 787         std::istream *indirect;
 788
 789         if (script == NULL) {
 790             start = NULL;
 791             end = NULL;
 792             indirect = &std::cin;
 793         } else {
 794             size_t size;
 795             start = reinterpret_cast<char *>(Map(script, &size));
 796             end = start + size;
 797
 798             if (size >= 2 && start[0] == '#' && start[1] == '!') {
 799                 start += 2;
 800
 801                 if (void *line = memchr(start, '\n', end - start))
 802                     start = reinterpret_cast<char *>(line);
 803                 else
 804                     start = end;
 805             }
 806
 807             indirect = NULL;
 808         }
 809
 810         CYStream direct(start, end);
 811         std::istream &stream(indirect == NULL ? direct : *indirect);
 812         CYDriver driver(stream, script ?: "<stdin>");
 813
 814         cy::parser parser(driver);
 815         Setup(driver, parser);
 816
 817         if (parser.parse() != 0 || !driver.errors_.empty()) {
 818             for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i)
 819                 std::cerr << i->location_.begin << ": " << i->message_ << std::endl;
 820         } else if (driver.program_ != NULL)
 821             if (client_ != -1) {
 822                 // XXX: this code means that you can't pipe to another process
 823                 std::string code(start, end-start);
 824                 Run(client_, false, code, &std::cout);
 825             } else {
 826                 std::ostringstream str;
 827                 CYOutput out(str, options);
 828                 Setup(out, driver, options);
 829                 out << *driver.program_;
 830                 std::string code(str.str());
 831                 if (compile)
 832                     std::cout << code;
 833                 else
 834                     Run(client_, false, code, &std::cout);
 835             }
 836     }
 837
 838     return 0;
 839 }
 840
 841 int main(int argc, char const * const argv[], char const * const envp[]) {
 842     apr_status_t status(apr_app_initialize(&argc, &argv, &envp));
 843
 844     if (status != APR_SUCCESS) {
 845         fprintf(stderr, "apr_app_initialize() != APR_SUCCESS\n");
 846         return 1;
 847     } else try {
 848         return Main(argc, argv, envp);
 849     } catch (const CYException &error) {
 850         CYPool pool;
 851         fprintf(stderr, "%s\n", error.PoolCString(pool));
 852         return 1;
 853     }
 854 }