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 = strlen(json);
 146     } else {
 147         mode_ = Sending;
 148         size = code.size;
 149         CYSendAll(client, &size, sizeof(size));
 150         CYSendAll(client, code.data, code.size);
 151         mode_ = Waiting;
 152         CYRecvAll(client, &size, sizeof(size));
 153         if (size == _not(size_t))
 154             json = NULL;
 155         else {
 156             char *temp(new(pool) char[size + 1]);
 157             CYRecvAll(client, temp, size);
 158             temp[size] = '\0';
 159             json = temp;
 160         }
 161         mode_ = Working;
 162     }
 163
 164     return CYUTF8String(json, size);
 165 }
 166
 167 static CYUTF8String Run(CYPool &pool, int client, const std::string &code) {
 168     return Run(pool, client, CYUTF8String(code.c_str(), code.size()));
 169 }
 170
 171 FILE *fout_;
 172
 173 static void Output(CYUTF8String json, FILE *fout, bool expand = false) {
 174     const char *data(json.data);
 175     size_t size(json.size);
 176
 177     if (data == NULL || fout == NULL)
 178         return;
 179
 180     if (!expand || data[0] != '"' && data[0] != '\'')
 181         fputs(data, fout);
 182     else for (size_t i(0); i != size; ++i)
 183         if (data[i] != '\\')
 184             fputc(data[i], fout);
 185         else switch(data[++i]) {
 186             case '\0': goto done;
 187             case '\\': fputc('\\', fout); break;
 188             case '\'': fputc('\'', fout); break;
 189             case '"': fputc('"', fout); break;
 190             case 'b': fputc('\b', fout); break;
 191             case 'f': fputc('\f', fout); break;
 192             case 'n': fputc('\n', fout); break;
 193             case 'r': fputc('\r', fout); break;
 194             case 't': fputc('\t', fout); break;
 195             case 'v': fputc('\v', fout); break;
 196             default: fputc('\\', fout); --i; break;
 197         }
 198
 199   done:
 200     fputs("\n", fout);
 201     fflush(fout);
 202 }
 203
 204 static void Run(int client, const char *data, size_t size, FILE *fout = NULL, bool expand = false) {
 205     CYPool pool;
 206     Output(Run(pool, client, CYUTF8String(data, size)), fout, expand);
 207 }
 208
 209 static void Run(int client, std::string &code, FILE *fout = NULL, bool expand = false) {
 210     Run(client, code.c_str(), code.size(), fout, expand);
 211 }
 212
 213 int (*append_history$)(int, const char *);
 214
 215 static std::string command_;
 216
 217 static CYExpression *ParseExpression(CYPool &pool, CYUTF8String code) {
 218     std::ostringstream str;
 219     str << '(' << code << ')';
 220     std::string string(str.str());
 221
 222     CYDriver driver(pool);
 223     driver.data_ = string.c_str();
 224     driver.size_ = string.size();
 225
 226     cy::parser parser(driver);
 227     Setup(driver, parser);
 228
 229     if (parser.parse() != 0 || !driver.errors_.empty())
 230         _assert(false);
 231
 232     CYExpress *express(dynamic_cast<CYExpress *>(driver.program_->statements_));
 233     _assert(express != NULL);
 234     return express->expression_;
 235 }
 236
 237 static int client_;
 238
 239 static char **Complete(const char *word, int start, int end) {
 240     rl_attempted_completion_over = TRUE;
 241
 242     CYPool pool;
 243
 244     CYDriver driver(pool);
 245     cy::parser parser(driver);
 246     Setup(driver, parser);
 247
 248     std::string line(rl_line_buffer, start);
 249     std::string command(command_ + line);
 250
 251     driver.data_ = command.c_str();
 252     driver.size_ = command.size();
 253
 254     driver.auto_ = true;
 255
 256     if (parser.parse() != 0 || !driver.errors_.empty())
 257         return NULL;
 258
 259     if (driver.mode_ == CYDriver::AutoNone)
 260         return NULL;
 261
 262     CYExpression *expression;
 263
 264     CYOptions options;
 265     CYContext context(driver.pool_, options);
 266
 267     std::ostringstream prefix;
 268
 269     switch (driver.mode_) {
 270         case CYDriver::AutoPrimary:
 271             expression = $ CYThis();
 272         break;
 273
 274         case CYDriver::AutoDirect:
 275             expression = driver.context_;
 276         break;
 277
 278         case CYDriver::AutoIndirect:
 279             expression = $ CYIndirect(driver.context_);
 280         break;
 281
 282         case CYDriver::AutoMessage: {
 283             CYDriver::Context &thing(driver.contexts_.back());
 284             expression = $M($M($ CYIndirect(thing.context_), $S("isa")), $S("messages"));
 285             for (CYDriver::Context::Words::const_iterator part(thing.words_.begin()); part != thing.words_.end(); ++part)
 286                 prefix << (*part)->word_ << ':';
 287         } break;
 288
 289         default:
 290             _assert(false);
 291     }
 292
 293     std::string begin(prefix.str());
 294
 295     driver.program_ = $ CYProgram($ CYExpress($C3(ParseExpression(pool,
 296     "   function(object, prefix, word) {\n"
 297     "       var names = [];\n"
 298     "       var pattern = '^' + prefix + word;\n"
 299     "       var length = prefix.length;\n"
 300     "       for (name in object)\n"
 301     "           if (name.match(pattern) != null)\n"
 302     "               names.push(name.substr(length));\n"
 303     "       return names;\n"
 304     "   }\n"
 305     ), expression, $S(begin.c_str()), $S(word))));
 306
 307     driver.program_->Replace(context);
 308
 309     std::ostringstream str;
 310     CYOutput out(str, options);
 311     out << *driver.program_;
 312
 313     std::string code(str.str());
 314     CYUTF8String json(Run(pool, client_, code));
 315
 316     CYExpression *result(ParseExpression(pool, json));
 317     CYArray *array(dynamic_cast<CYArray *>(result));
 318
 319     if (array == NULL) {
 320         fprintf(fout_, "\n");
 321         Output(json, fout_);
 322         rl_forced_update_display();
 323         return NULL;
 324     }
 325
 326     // XXX: use an std::set?
 327     typedef std::vector<std::string> Completions;
 328     Completions completions;
 329
 330     std::string common;
 331     bool rest(false);
 332
 333     for (CYElement *element(array->elements_); element != NULL; element = element->next_) {
 334         CYString *string(dynamic_cast<CYString *>(element->value_));
 335         _assert(string != NULL);
 336
 337         std::string completion(string->value_, string->size_);
 338         completions.push_back(completion);
 339
 340         if (!rest) {
 341             common = completion;
 342             rest = true;
 343         } else {
 344             size_t limit(completion.size()), size(common.size());
 345             if (size > limit)
 346                 common = common.substr(0, limit);
 347             else
 348                 limit = size;
 349             for (limit = 0; limit != size; ++limit)
 350                 if (common[limit] != completion[limit])
 351                     break;
 352             if (limit != size)
 353                 common = common.substr(0, limit);
 354         }
 355     }
 356
 357     size_t count(completions.size());
 358     if (count == 0)
 359         return NULL;
 360
 361     if (!common.empty()) {
 362         size_t size(prefix.str().size());
 363         _assert(common.size() >= size);
 364         common = common.substr(size);
 365     }
 366
 367     size_t colon(common.find(':'));
 368     if (colon != std::string::npos)
 369         common = common.substr(0, colon + 1);
 370     if (completions.size() == 1)
 371         common += ' ';
 372
 373     char **results(reinterpret_cast<char **>(malloc(sizeof(char *) * (count + 2))));
 374
 375     results[0] = strdup(common.c_str());
 376     size_t index(0);
 377     for (Completions::const_iterator i(completions.begin()); i != completions.end(); ++i)
 378         results[++index] = strdup(i->c_str());
 379     results[count + 1] = NULL;
 380
 381     return results;
 382 }
 383
 384 // need char *, not const char *
 385 static char name_[] = "cycript";
 386 static char break_[] = " \t\n\"\\'`@$><=;|&{(" ")}" ".:[]";
 387
 388 static void Console(apr_pool_t *pool, CYOptions &options) {
 389     passwd *passwd;
 390     if (const char *username = getenv("LOGNAME"))
 391         passwd = getpwnam(username);
 392     else
 393         passwd = getpwuid(getuid());
 394
 395     const char *basedir(apr_psprintf(pool, "%s/.cycript", passwd->pw_dir));
 396     const char *histfile(apr_psprintf(pool, "%s/history", basedir));
 397     size_t histlines(0);
 398
 399     rl_initialize();
 400     rl_readline_name = name_;
 401
 402     mkdir(basedir, 0700);
 403     read_history(histfile);
 404
 405     bool bypass(false);
 406     bool debug(false);
 407     bool expand(false);
 408
 409     fout_ = stdout;
 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             fputs("\n", fout_);
 434             fflush(fout_);
 435             goto restart;
 436         }
 437
 438       read:
 439         mode_ = Parsing;
 440         char *line(readline(prompt));
 441         mode_ = Working;
 442         if (line == NULL)
 443             break;
 444         if (line[0] == '\0')
 445             goto read;
 446
 447         if (!extra) {
 448             extra = true;
 449             if (line[0] == '?') {
 450                 std::string data(line + 1);
 451                 if (data == "bypass") {
 452                     bypass = !bypass;
 453                     fprintf(fout_, "bypass == %s\n", bypass ? "true" : "false");
 454                     fflush(fout_);
 455                 } else if (data == "debug") {
 456                     debug = !debug;
 457                     fprintf(fout_, "debug == %s\n", debug ? "true" : "false");
 458                     fflush(fout_);
 459                 } else if (data == "expand") {
 460                     expand = !expand;
 461                     fprintf(fout_, "expand == %s\n", expand ? "true" : "false");
 462                     fflush(fout_);
 463                 }
 464                 add_history(line);
 465                 ++histlines;
 466                 goto restart;
 467             }
 468         }
 469
 470         command_ += line;
 471
 472         char *begin(line), *end(line + strlen(line));
 473         while (char *nl = reinterpret_cast<char *>(memchr(begin, '\n', end - begin))) {
 474             *nl = '\0';
 475             lines.push_back(begin);
 476             begin = nl + 1;
 477         }
 478
 479         lines.push_back(begin);
 480
 481         free(line);
 482
 483         std::string code;
 484
 485         if (bypass)
 486             code = command_;
 487         else {
 488             CYDriver driver;
 489             cy::parser parser(driver);
 490             Setup(driver, parser);
 491
 492             driver.data_ = command_.c_str();
 493             driver.size_ = command_.size();
 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 - 1 != 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 - 1; ++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             std::cout << code << std::endl;
 550
 551         Run(client_, code, fout_, expand);
 552     }
 553
 554     if (append_history$ != NULL) {
 555         _syscall(close(_syscall(open(histfile, O_CREAT | O_WRONLY, 0600))));
 556         (*append_history$)(histlines, histfile);
 557     } else {
 558         write_history(histfile);
 559     }
 560
 561     fputs("\n", fout_);
 562     fflush(fout_);
 563 }
 564
 565 static void *Map(const char *path, size_t *psize) {
 566     int fd;
 567     _syscall(fd = open(path, O_RDONLY));
 568
 569     struct stat stat;
 570     _syscall(fstat(fd, &stat));
 571     size_t size(stat.st_size);
 572
 573     *psize = size;
 574
 575     void *base;
 576     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
 577
 578     _syscall(close(fd));
 579     return base;
 580 }
 581
 582 void InjectLibrary(pid_t pid);
 583
 584 int Main(int argc, char const * const argv[], char const * const envp[]) {
 585     bool tty(isatty(STDIN_FILENO));
 586     bool compile(false);
 587     CYOptions options;
 588
 589     append_history$ = reinterpret_cast<int (*)(int, const char *)>(dlsym(RTLD_DEFAULT, "append_history"));
 590
 591 #ifdef CY_ATTACH
 592     pid_t pid(_not(pid_t));
 593 #endif
 594
 595     CYPool pool;
 596     apr_getopt_t *state;
 597     _aprcall(apr_getopt_init(&state, pool, argc, argv));
 598
 599     for (;;) {
 600         char opt;
 601         const char *arg;
 602
 603         apr_status_t status(apr_getopt(state,
 604             "cg:n:"
 605 #ifdef CY_ATTACH
 606             "p:"
 607 #endif
 608             "s"
 609         , &opt, &arg));
 610
 611         switch (status) {
 612             case APR_EOF:
 613                 goto getopt;
 614             case APR_BADCH:
 615             case APR_BADARG:
 616                 fprintf(stderr,
 617                     "usage: cycript [-c]"
 618 #ifdef CY_ATTACH
 619                     " [-p <pid|name>]"
 620 #endif
 621                     " [<script> [<arg>...]]\n"
 622                 );
 623                 return 1;
 624             default:
 625                 _aprcall(status);
 626         }
 627
 628         switch (opt) {
 629             case 'c':
 630                 compile = true;
 631             break;
 632
 633             case 'g':
 634                 if (false);
 635                 else if (strcmp(arg, "rename") == 0)
 636                     options.verbose_ = true;
 637 #if YYDEBUG
 638                 else if (strcmp(arg, "bison") == 0)
 639                     bison_ = true;
 640 #endif
 641                 else {
 642                     fprintf(stderr, "invalid name for -g\n");
 643                     return 1;
 644                 }
 645             break;
 646
 647             case 'n':
 648                 if (false);
 649                 else if (strcmp(arg, "minify") == 0)
 650                     pretty_ = true;
 651                 else {
 652                     fprintf(stderr, "invalid name for -n\n");
 653                     return 1;
 654                 }
 655             break;
 656
 657 #ifdef CY_ATTACH
 658             case 'p': {
 659                 size_t size(strlen(arg));
 660                 char *end;
 661
 662                 pid = strtoul(arg, &end, 0);
 663                 if (arg + size != end) {
 664                     // XXX: arg needs to be escaped in some horrendous way of doom
 665                     const char *command(apr_psprintf(pool, "ps axc|sed -e '/^ *[0-9]/{s/^ *\\([0-9]*\\)\\( *[^ ]*\\)\\{3\\} *-*\\([^ ]*\\)/\\3 \\1/;/^%s /{s/^[^ ]* //;q;};};d'", arg));
 666
 667                     if (FILE *pids = popen(command, "r")) {
 668                         char value[32];
 669                         size = 0;
 670
 671                         for (;;) {
 672                             size_t read(fread(value + size, 1, sizeof(value) - size, pids));
 673                             if (read == 0)
 674                                 break;
 675                             else {
 676                                 size += read;
 677                                 if (size == sizeof(value)) {
 678                                     pid = _not(pid_t);
 679                                     goto fail;
 680                                 }
 681                             }
 682                         }
 683
 684                       size:
 685                         if (size == 0)
 686                             goto fail;
 687                         if (value[size - 1] == '\n') {
 688                             --size;
 689                             goto size;
 690                         }
 691
 692                         value[size] = '\0';
 693                         size = strlen(value);
 694                         pid = strtoul(value, &end, 0);
 695                         if (value + size != end) fail:
 696                             pid = _not(pid_t);
 697                         _syscall(pclose(pids));
 698                     }
 699
 700                     if (pid == _not(pid_t)) {
 701                         fprintf(stderr, "invalid pid for -p\n");
 702                         return 1;
 703                     }
 704                 }
 705             } break;
 706 #endif
 707
 708             case 's':
 709                 strict_ = true;
 710             break;
 711         }
 712     } getopt:;
 713
 714     const char *script;
 715     int ind(state->ind);
 716
 717 #ifdef CY_ATTACH
 718     if (pid != _not(pid_t) && ind < argc - 1) {
 719         fprintf(stderr, "-p cannot set argv\n");
 720         return 1;
 721     }
 722
 723     if (pid != _not(pid_t) && compile) {
 724         fprintf(stderr, "-p conflicts with -c\n");
 725         return 1;
 726     }
 727 #endif
 728
 729     if (ind == argc)
 730         script = NULL;
 731     else {
 732 #ifdef CY_EXECUTE
 733         // XXX: const_cast?! wtf gcc :(
 734         CYSetArgs(argc - ind - 1, const_cast<const char **>(argv + ind + 1));
 735 #endif
 736         script = argv[ind];
 737         if (strcmp(script, "-") == 0)
 738             script = NULL;
 739     }
 740
 741 #ifdef CY_ATTACH
 742     if (pid != _not(pid_t) && script == NULL && !tty) {
 743         fprintf(stderr, "non-terminal attaching to remote console\n");
 744         return 1;
 745     }
 746 #endif
 747
 748 #ifdef CY_ATTACH
 749     if (pid == _not(pid_t))
 750         client_ = -1;
 751     else {
 752         int server(_syscall(socket(PF_UNIX, SOCK_STREAM, 0))); try {
 753             struct sockaddr_un address;
 754             memset(&address, 0, sizeof(address));
 755             address.sun_family = AF_UNIX;
 756
 757             sprintf(address.sun_path, "/tmp/.s.cy.%u", getpid());
 758
 759             _syscall(bind(server, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
 760             _syscall(chmod(address.sun_path, 0777));
 761
 762             try {
 763                 _syscall(listen(server, 1));
 764                 InjectLibrary(pid);
 765                 client_ = _syscall(accept(server, NULL, NULL));
 766             } catch (...) {
 767                 // XXX: exception?
 768                 unlink(address.sun_path);
 769                 throw;
 770             }
 771         } catch (...) {
 772             _syscall(close(server));
 773             throw;
 774         }
 775     }
 776 #else
 777     client_ = -1;
 778 #endif
 779
 780     if (script == NULL && tty)
 781         Console(pool, options);
 782     else {
 783         CYDriver driver(pool, 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 }