Console.cpp

   1 /* Cycript - Inlining/Optimizing JavaScript Compiler
   2  * Copyright (C) 2009  Jay Freeman (saurik)
   3 */
   4
   5 /* Modified BSD License {{{ */
   6 /*
   7  *        Redistribution and use in source and binary
   8  * forms, with or without modification, are permitted
   9  * provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the
  12  *    above copyright notice, this list of conditions
  13  *    and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the
  15  *    above copyright notice, this list of conditions
  16  *    and the following disclaimer in the documentation
  17  *    and/or other materials provided with the
  18  *    distribution.
  19  * 3. The name of the author may not be used to endorse
  20  *    or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
  24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
  25  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
  28  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  29  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  30  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  31  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  33  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  34  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  35  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  36  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37 */
  38 /* }}} */
  39
  40 #include "cycript.hpp"
  41
  42 #ifdef CY_EXECUTE
  43 #include "JavaScript.hpp"
  44 #endif
  45
  46 #include <cstdio>
  47 #include <sstream>
  48
  49 #include <setjmp.h>
  50
  51 #ifdef HAVE_READLINE_H
  52 #include <readline.h>
  53 #else
  54 #include <readline/readline.h>
  55 #endif
  56
  57 #ifdef HAVE_HISTORY_H
  58 #include <history.h>
  59 #else
  60 #include <readline/history.h>
  61 #endif
  62
  63 #include <sys/mman.h>
  64
  65 #include <errno.h>
  66 #include <unistd.h>
  67
  68 #include <sys/types.h>
  69 #include <sys/stat.h>
  70 #include <fcntl.h>
  71
  72 #include "Cycript.tab.hh"
  73
  74 #include <sys/types.h>
  75 #include <sys/socket.h>
  76 #include <netinet/in.h>
  77 #include <sys/un.h>
  78 #include <pwd.h>
  79
  80 #include <apr_getopt.h>
  81
  82 #include <dlfcn.h>
  83
  84 #include "Replace.hpp"
  85
  86 static volatile enum {
  87     Working,
  88     Parsing,
  89     Running,
  90     Sending,
  91     Waiting,
  92 } mode_;
  93
  94 static jmp_buf ctrlc_;
  95
  96 static void sigint(int) {
  97     switch (mode_) {
  98         case Working:
  99             return;
 100         case Parsing:
 101             longjmp(ctrlc_, 1);
 102         case Running:
 103             throw "*** Ctrl-C";
 104         case Sending:
 105             return;
 106         case Waiting:
 107             return;
 108     }
 109 }
 110
 111 #if YYDEBUG
 112 static bool bison_;
 113 #endif
 114 static bool strict_;
 115 static bool pretty_;
 116
 117 void Setup(CYDriver &driver, cy::parser &parser) {
 118 #if YYDEBUG
 119     if (bison_)
 120         parser.set_debug_level(1);
 121 #endif
 122     if (strict_)
 123         driver.strict_ = true;
 124 }
 125
 126 void Setup(CYOutput &out, CYDriver &driver, CYOptions &options) {
 127     out.pretty_ = pretty_;
 128     CYContext context(driver.pool_, options);
 129     driver.program_->Replace(context);
 130 }
 131
 132 static CYUTF8String Run(CYPool &pool, int client, CYUTF8String code) {
 133     const char *json;
 134     size_t size;
 135
 136     if (client == -1) {
 137         mode_ = Running;
 138 #ifdef CY_EXECUTE
 139         json = CYExecute(pool, code);
 140 #else
 141         json = NULL;
 142 #endif
 143         mode_ = Working;
 144         if (json == NULL)
 145             size = 0;
 146         else
 147             size = strlen(json);
 148     } else {
 149         mode_ = Sending;
 150         size = code.size;
 151         CYSendAll(client, &size, sizeof(size));
 152         CYSendAll(client, code.data, code.size);
 153         mode_ = Waiting;
 154         CYRecvAll(client, &size, sizeof(size));
 155         if (size == _not(size_t))
 156             json = NULL;
 157         else {
 158             char *temp(new(pool) char[size + 1]);
 159             CYRecvAll(client, temp, size);
 160             temp[size] = '\0';
 161             json = temp;
 162         }
 163         mode_ = Working;
 164     }
 165
 166     return CYUTF8String(json, size);
 167 }
 168
 169 static CYUTF8String Run(CYPool &pool, int client, const std::string &code) {
 170     return Run(pool, client, CYUTF8String(code.c_str(), code.size()));
 171 }
 172
 173 FILE *fout_;
 174
 175 static void Output(CYUTF8String json, FILE *fout, bool expand = false) {
 176     const char *data(json.data);
 177     size_t size(json.size);
 178
 179     if (data == NULL || fout == NULL)
 180         return;
 181
 182     if (!expand || data[0] != '"' && data[0] != '\'')
 183         fputs(data, fout);
 184     else for (size_t i(0); i != size; ++i)
 185         if (data[i] != '\\')
 186             fputc(data[i], fout);
 187         else switch(data[++i]) {
 188             case '\0': goto done;
 189             case '\\': fputc('\\', fout); break;
 190             case '\'': fputc('\'', fout); break;
 191             case '"': fputc('"', fout); break;
 192             case 'b': fputc('\b', fout); break;
 193             case 'f': fputc('\f', fout); break;
 194             case 'n': fputc('\n', fout); break;
 195             case 'r': fputc('\r', fout); break;
 196             case 't': fputc('\t', fout); break;
 197             case 'v': fputc('\v', fout); break;
 198             default: fputc('\\', fout); --i; break;
 199         }
 200
 201   done:
 202     fputs("\n", fout);
 203     fflush(fout);
 204 }
 205
 206 static void Run(int client, const char *data, size_t size, FILE *fout = NULL, bool expand = false) {
 207     CYPool pool;
 208     Output(Run(pool, client, CYUTF8String(data, size)), fout, expand);
 209 }
 210
 211 static void Run(int client, std::string &code, FILE *fout = NULL, bool expand = false) {
 212     Run(client, code.c_str(), code.size(), fout, expand);
 213 }
 214
 215 int (*append_history$)(int, const char *);
 216
 217 static std::string command_;
 218
 219 static CYExpression *ParseExpression(CYPool &pool, CYUTF8String code) {
 220     std::ostringstream str;
 221     str << '(' << code << ')';
 222     std::string string(str.str());
 223
 224     CYDriver driver(pool);
 225     driver.data_ = string.c_str();
 226     driver.size_ = string.size();
 227
 228     cy::parser parser(driver);
 229     Setup(driver, parser);
 230
 231     if (parser.parse() != 0 || !driver.errors_.empty())
 232         _assert(false);
 233
 234     CYExpress *express(dynamic_cast<CYExpress *>(driver.program_->statements_));
 235     _assert(express != NULL);
 236     return express->expression_;
 237 }
 238
 239 static int client_;
 240
 241 static char **Complete(const char *word, int start, int end) {
 242     rl_attempted_completion_over = TRUE;
 243
 244     CYPool pool;
 245
 246     CYDriver driver(pool);
 247     cy::parser parser(driver);
 248     Setup(driver, parser);
 249
 250     std::string line(rl_line_buffer, start);
 251     std::string command(command_ + line);
 252
 253     driver.data_ = command.c_str();
 254     driver.size_ = command.size();
 255
 256     driver.auto_ = true;
 257
 258     if (parser.parse() != 0 || !driver.errors_.empty())
 259         return NULL;
 260
 261     if (driver.mode_ == CYDriver::AutoNone)
 262         return NULL;
 263
 264     CYExpression *expression;
 265
 266     CYOptions options;
 267     CYContext context(driver.pool_, options);
 268
 269     std::ostringstream prefix;
 270
 271     switch (driver.mode_) {
 272         case CYDriver::AutoPrimary:
 273             expression = $ CYThis();
 274         break;
 275
 276         case CYDriver::AutoDirect:
 277             expression = driver.context_;
 278         break;
 279
 280         case CYDriver::AutoIndirect:
 281             expression = $ CYIndirect(driver.context_);
 282         break;
 283
 284         case CYDriver::AutoMessage: {
 285             CYDriver::Context &thing(driver.contexts_.back());
 286             expression = $M($M($ CYIndirect(thing.context_), $S("isa")), $S("messages"));
 287             for (CYDriver::Context::Words::const_iterator part(thing.words_.begin()); part != thing.words_.end(); ++part)
 288                 prefix << (*part)->word_ << ':';
 289         } break;
 290
 291         default:
 292             _assert(false);
 293     }
 294
 295     std::string begin(prefix.str());
 296
 297     driver.program_ = $ CYProgram($ CYExpress($C3(ParseExpression(pool,
 298     "   function(object, prefix, word) {\n"
 299     "       var names = [];\n"
 300     "       var pattern = '^' + prefix + word;\n"
 301     "       var length = prefix.length;\n"
 302     "       for (name in object)\n"
 303     "           if (name.match(pattern) != null)\n"
 304     "               names.push(name.substr(length));\n"
 305     "       return names;\n"
 306     "   }\n"
 307     ), expression, $S(begin.c_str()), $S(word))));
 308
 309     driver.program_->Replace(context);
 310
 311     std::ostringstream str;
 312     CYOutput out(str, options);
 313     out << *driver.program_;
 314
 315     std::string code(str.str());
 316     CYUTF8String json(Run(pool, client_, code));
 317
 318     CYExpression *result(ParseExpression(pool, json));
 319     CYArray *array(dynamic_cast<CYArray *>(result));
 320
 321     if (array == NULL) {
 322         fprintf(fout_, "\n");
 323         Output(json, fout_);
 324         rl_forced_update_display();
 325         return NULL;
 326     }
 327
 328     // XXX: use an std::set?
 329     typedef std::vector<std::string> Completions;
 330     Completions completions;
 331
 332     std::string common;
 333     bool rest(false);
 334
 335     for (CYElement *element(array->elements_); element != NULL; element = element->next_) {
 336         CYString *string(dynamic_cast<CYString *>(element->value_));
 337         _assert(string != NULL);
 338
 339         std::string completion;
 340         if (string->size_ != 0)
 341             completion.assign(string->value_, string->size_);
 342         else if (driver.mode_ == CYDriver::AutoMessage)
 343             completion = "]";
 344         else
 345             continue;
 346
 347         completions.push_back(completion);
 348
 349         if (!rest) {
 350             common = completion;
 351             rest = true;
 352         } else {
 353             size_t limit(completion.size()), size(common.size());
 354             if (size > limit)
 355                 common = common.substr(0, limit);
 356             else
 357                 limit = size;
 358             for (limit = 0; limit != size; ++limit)
 359                 if (common[limit] != completion[limit])
 360                     break;
 361             if (limit != size)
 362                 common = common.substr(0, limit);
 363         }
 364     }
 365
 366     size_t count(completions.size());
 367     if (count == 0)
 368         return NULL;
 369
 370     size_t colon(common.find(':'));
 371     if (colon != std::string::npos)
 372         common = common.substr(0, colon + 1);
 373     if (completions.size() == 1)
 374         common += ' ';
 375
 376     char **results(reinterpret_cast<char **>(malloc(sizeof(char *) * (count + 2))));
 377
 378     results[0] = strdup(common.c_str());
 379     size_t index(0);
 380     for (Completions::const_iterator i(completions.begin()); i != completions.end(); ++i)
 381         results[++index] = strdup(i->c_str());
 382     results[count + 1] = NULL;
 383
 384     return results;
 385 }
 386
 387 // need char *, not const char *
 388 static char name_[] = "cycript";
 389 static char break_[] = " \t\n\"\\'`@$><=;|&{(" ")}" ".:[]";
 390
 391 static void Console(apr_pool_t *pool, CYOptions &options) {
 392     passwd *passwd;
 393     if (const char *username = getenv("LOGNAME"))
 394         passwd = getpwnam(username);
 395     else
 396         passwd = getpwuid(getuid());
 397
 398     const char *basedir(apr_psprintf(pool, "%s/.cycript", passwd->pw_dir));
 399     const char *histfile(apr_psprintf(pool, "%s/history", basedir));
 400     size_t histlines(0);
 401
 402     rl_initialize();
 403     rl_readline_name = name_;
 404
 405     mkdir(basedir, 0700);
 406     read_history(histfile);
 407
 408     bool bypass(false);
 409     bool debug(false);
 410     bool expand(false);
 411
 412     fout_ = stdout;
 413
 414     // rl_completer_word_break_characters is broken in libedit
 415     rl_basic_word_break_characters = break_;
 416
 417     rl_completer_word_break_characters = break_;
 418     rl_attempted_completion_function = &Complete;
 419     rl_bind_key('\t', rl_complete);
 420
 421     struct sigaction action;
 422     sigemptyset(&action.sa_mask);
 423     action.sa_handler = &sigint;
 424     action.sa_flags = 0;
 425     sigaction(SIGINT, &action, NULL);
 426
 427     restart: for (;;) {
 428         command_.clear();
 429         std::vector<std::string> lines;
 430
 431         bool extra(false);
 432         const char *prompt("cy# ");
 433
 434         if (setjmp(ctrlc_) != 0) {
 435             mode_ = Working;
 436             fputs("\n", fout_);
 437             fflush(fout_);
 438             goto restart;
 439         }
 440
 441       read:
 442         mode_ = Parsing;
 443         char *line(readline(prompt));
 444         mode_ = Working;
 445         if (line == NULL)
 446             break;
 447         if (line[0] == '\0')
 448             goto read;
 449
 450         if (!extra) {
 451             extra = true;
 452             if (line[0] == '?') {
 453                 std::string data(line + 1);
 454                 if (data == "bypass") {
 455                     bypass = !bypass;
 456                     fprintf(fout_, "bypass == %s\n", bypass ? "true" : "false");
 457                     fflush(fout_);
 458                 } else if (data == "debug") {
 459                     debug = !debug;
 460                     fprintf(fout_, "debug == %s\n", debug ? "true" : "false");
 461                     fflush(fout_);
 462                 } else if (data == "expand") {
 463                     expand = !expand;
 464                     fprintf(fout_, "expand == %s\n", expand ? "true" : "false");
 465                     fflush(fout_);
 466                 }
 467                 add_history(line);
 468                 ++histlines;
 469                 goto restart;
 470             }
 471         }
 472
 473         command_ += line;
 474
 475         char *begin(line), *end(line + strlen(line));
 476         while (char *nl = reinterpret_cast<char *>(memchr(begin, '\n', end - begin))) {
 477             *nl = '\0';
 478             lines.push_back(begin);
 479             begin = nl + 1;
 480         }
 481
 482         lines.push_back(begin);
 483
 484         free(line);
 485
 486         std::string code;
 487
 488         if (bypass)
 489             code = command_;
 490         else {
 491             CYDriver driver;
 492             cy::parser parser(driver);
 493             Setup(driver, parser);
 494
 495             driver.data_ = command_.c_str();
 496             driver.size_ = command_.size();
 497
 498             if (parser.parse() != 0 || !driver.errors_.empty()) {
 499                 for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
 500                     cy::position begin(error->location_.begin);
 501                     if (begin.line != lines.size() || begin.column - 1 != lines.back().size() || error->warning_) {
 502                         cy::position end(error->location_.end);
 503
 504                         if (begin.line != lines.size()) {
 505                             std::cerr << "  | ";
 506                             std::cerr << lines[begin.line - 1] << std::endl;
 507                         }
 508
 509                         std::cerr << "....";
 510                         for (size_t i(0); i != begin.column - 1; ++i)
 511                             std::cerr << '.';
 512                         if (begin.line != end.line || begin.column == end.column)
 513                             std::cerr << '^';
 514                         else for (size_t i(0), e(end.column - begin.column); i != e; ++i)
 515                             std::cerr << '^';
 516                         std::cerr << std::endl;
 517
 518                         std::cerr << "  | ";
 519                         std::cerr << error->message_ << std::endl;
 520
 521                         add_history(command_.c_str());
 522                         ++histlines;
 523                         goto restart;
 524                     }
 525                 }
 526
 527                 driver.errors_.clear();
 528
 529                 command_ += '\n';
 530                 prompt = "cy> ";
 531                 goto read;
 532             }
 533
 534             if (driver.program_ == NULL)
 535                 goto restart;
 536
 537             if (client_ != -1)
 538                 code = command_;
 539             else {
 540                 std::ostringstream str;
 541                 CYOutput out(str, options);
 542                 Setup(out, driver, options);
 543                 out << *driver.program_;
 544                 code = str.str();
 545             }
 546         }
 547
 548         add_history(command_.c_str());
 549         ++histlines;
 550
 551         if (debug)
 552             std::cout << code << std::endl;
 553
 554         Run(client_, code, fout_, expand);
 555     }
 556
 557     if (append_history$ != NULL) {
 558         _syscall(close(_syscall(open(histfile, O_CREAT | O_WRONLY, 0600))));
 559         (*append_history$)(histlines, histfile);
 560     } else {
 561         write_history(histfile);
 562     }
 563
 564     fputs("\n", fout_);
 565     fflush(fout_);
 566 }
 567
 568 static void *Map(const char *path, size_t *psize) {
 569     int fd;
 570     _syscall(fd = open(path, O_RDONLY));
 571
 572     struct stat stat;
 573     _syscall(fstat(fd, &stat));
 574     size_t size(stat.st_size);
 575
 576     *psize = size;
 577
 578     void *base;
 579     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
 580
 581     _syscall(close(fd));
 582     return base;
 583 }
 584
 585 void InjectLibrary(pid_t pid);
 586
 587 int Main(int argc, char const * const argv[], char const * const envp[]) {
 588     bool tty(isatty(STDIN_FILENO));
 589     bool compile(false);
 590     CYOptions options;
 591
 592     append_history$ = reinterpret_cast<int (*)(int, const char *)>(dlsym(RTLD_DEFAULT, "append_history"));
 593
 594 #ifdef CY_ATTACH
 595     pid_t pid(_not(pid_t));
 596 #endif
 597
 598     CYPool pool;
 599     apr_getopt_t *state;
 600     _aprcall(apr_getopt_init(&state, pool, argc, argv));
 601
 602     for (;;) {
 603         char opt;
 604         const char *arg;
 605
 606         apr_status_t status(apr_getopt(state,
 607             "cg:n:"
 608 #ifdef CY_ATTACH
 609             "p:"
 610 #endif
 611             "s"
 612         , &opt, &arg));
 613
 614         switch (status) {
 615             case APR_EOF:
 616                 goto getopt;
 617             case APR_BADCH:
 618             case APR_BADARG:
 619                 fprintf(stderr,
 620                     "usage: cycript [-c]"
 621 #ifdef CY_ATTACH
 622                     " [-p <pid|name>]"
 623 #endif
 624                     " [<script> [<arg>...]]\n"
 625                 );
 626                 return 1;
 627             default:
 628                 _aprcall(status);
 629         }
 630
 631         switch (opt) {
 632             case 'c':
 633                 compile = true;
 634             break;
 635
 636             case 'g':
 637                 if (false);
 638                 else if (strcmp(arg, "rename") == 0)
 639                     options.verbose_ = true;
 640 #if YYDEBUG
 641                 else if (strcmp(arg, "bison") == 0)
 642                     bison_ = true;
 643 #endif
 644                 else {
 645                     fprintf(stderr, "invalid name for -g\n");
 646                     return 1;
 647                 }
 648             break;
 649
 650             case 'n':
 651                 if (false);
 652                 else if (strcmp(arg, "minify") == 0)
 653                     pretty_ = true;
 654                 else {
 655                     fprintf(stderr, "invalid name for -n\n");
 656                     return 1;
 657                 }
 658             break;
 659
 660 #ifdef CY_ATTACH
 661             case 'p': {
 662                 size_t size(strlen(arg));
 663                 char *end;
 664
 665                 pid = strtoul(arg, &end, 0);
 666                 if (arg + size != end) {
 667                     // XXX: arg needs to be escaped in some horrendous way of doom
 668                     const char *command(apr_psprintf(pool, "ps axc|sed -e '/^ *[0-9]/{s/^ *\\([0-9]*\\)\\( *[^ ]*\\)\\{3\\} *-*\\([^ ]*\\)/\\3 \\1/;/^%s /{s/^[^ ]* //;q;};};d'", arg));
 669
 670                     if (FILE *pids = popen(command, "r")) {
 671                         char value[32];
 672                         size = 0;
 673
 674                         for (;;) {
 675                             size_t read(fread(value + size, 1, sizeof(value) - size, pids));
 676                             if (read == 0)
 677                                 break;
 678                             else {
 679                                 size += read;
 680                                 if (size == sizeof(value)) {
 681                                     pid = _not(pid_t);
 682                                     goto fail;
 683                                 }
 684                             }
 685                         }
 686
 687                       size:
 688                         if (size == 0)
 689                             goto fail;
 690                         if (value[size - 1] == '\n') {
 691                             --size;
 692                             goto size;
 693                         }
 694
 695                         value[size] = '\0';
 696                         size = strlen(value);
 697                         pid = strtoul(value, &end, 0);
 698                         if (value + size != end) fail:
 699                             pid = _not(pid_t);
 700                         _syscall(pclose(pids));
 701                     }
 702
 703                     if (pid == _not(pid_t)) {
 704                         fprintf(stderr, "invalid pid for -p\n");
 705                         return 1;
 706                     }
 707                 }
 708             } break;
 709 #endif
 710
 711             case 's':
 712                 strict_ = true;
 713             break;
 714         }
 715     } getopt:;
 716
 717     const char *script;
 718     int ind(state->ind);
 719
 720 #ifdef CY_ATTACH
 721     if (pid != _not(pid_t) && ind < argc - 1) {
 722         fprintf(stderr, "-p cannot set argv\n");
 723         return 1;
 724     }
 725
 726     if (pid != _not(pid_t) && compile) {
 727         fprintf(stderr, "-p conflicts with -c\n");
 728         return 1;
 729     }
 730 #endif
 731
 732     if (ind == argc)
 733         script = NULL;
 734     else {
 735 #ifdef CY_EXECUTE
 736         // XXX: const_cast?! wtf gcc :(
 737         CYSetArgs(argc - ind - 1, const_cast<const char **>(argv + ind + 1));
 738 #endif
 739         script = argv[ind];
 740         if (strcmp(script, "-") == 0)
 741             script = NULL;
 742     }
 743
 744 #ifdef CY_ATTACH
 745     if (pid != _not(pid_t) && script == NULL && !tty) {
 746         fprintf(stderr, "non-terminal attaching to remote console\n");
 747         return 1;
 748     }
 749 #endif
 750
 751 #ifdef CY_ATTACH
 752     if (pid == _not(pid_t))
 753         client_ = -1;
 754     else {
 755         int server(_syscall(socket(PF_UNIX, SOCK_STREAM, 0))); try {
 756             struct sockaddr_un address;
 757             memset(&address, 0, sizeof(address));
 758             address.sun_family = AF_UNIX;
 759
 760             sprintf(address.sun_path, "/tmp/.s.cy.%u", getpid());
 761
 762             _syscall(bind(server, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
 763             _syscall(chmod(address.sun_path, 0777));
 764
 765             try {
 766                 _syscall(listen(server, 1));
 767                 InjectLibrary(pid);
 768                 client_ = _syscall(accept(server, NULL, NULL));
 769             } catch (...) {
 770                 // XXX: exception?
 771                 unlink(address.sun_path);
 772                 throw;
 773             }
 774         } catch (...) {
 775             _syscall(close(server));
 776             throw;
 777         }
 778     }
 779 #else
 780     client_ = -1;
 781 #endif
 782
 783     if (script == NULL && tty)
 784         Console(pool, options);
 785     else {
 786         CYDriver driver(pool, script ?: "<stdin>");
 787         cy::parser parser(driver);
 788         Setup(driver, parser);
 789
 790         char *start, *end;
 791
 792         if (script == NULL) {
 793             start = NULL;
 794             end = NULL;
 795
 796             driver.file_ = stdin;
 797         } else {
 798             size_t size;
 799             start = reinterpret_cast<char *>(Map(script, &size));
 800             end = start + size;
 801
 802             if (size >= 2 && start[0] == '#' && start[1] == '!') {
 803                 start += 2;
 804
 805                 if (void *line = memchr(start, '\n', end - start))
 806                     start = reinterpret_cast<char *>(line);
 807                 else
 808                     start = end;
 809             }
 810
 811             driver.data_ = start;
 812             driver.size_ = end - start;
 813         }
 814
 815         if (parser.parse() != 0 || !driver.errors_.empty()) {
 816             for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i)
 817                 std::cerr << i->location_.begin << ": " << i->message_ << std::endl;
 818         } else if (driver.program_ != NULL)
 819             if (client_ != -1) {
 820                 std::string code(start, end-start);
 821                 Run(client_, code, stdout);
 822             } else {
 823                 std::ostringstream str;
 824                 CYOutput out(str, options);
 825                 Setup(out, driver, options);
 826                 out << *driver.program_;
 827                 std::string code(str.str());
 828                 if (compile)
 829                     std::cout << code;
 830                 else
 831                     Run(client_, code, stdout);
 832             }
 833     }
 834
 835     return 0;
 836 }
 837
 838 int main(int argc, char const * const argv[], char const * const envp[]) {
 839     apr_status_t status(apr_app_initialize(&argc, &argv, &envp));
 840
 841     if (status != APR_SUCCESS) {
 842         fprintf(stderr, "apr_app_initialize() != APR_SUCCESS\n");
 843         return 1;
 844     } else try {
 845         return Main(argc, argv, envp);
 846     } catch (const CYException &error) {
 847         CYPool pool;
 848         fprintf(stderr, "%s\n", error.PoolCString(pool));
 849         return 1;
 850     }
 851 }