Console.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2013  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU General Public License, Version 3 {{{ */
   6 /*
   7  * Cycript is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation, either version 3 of the License,
  10  * or (at your option) any later version.
  11  *
  12  * Cycript is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU 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 <sys/types.h>
  55 #include <sys/socket.h>
  56 #include <netinet/in.h>
  57 #include <sys/un.h>
  58 #include <pwd.h>
  59
  60 #include <apr_getopt.h>
  61 #include <apr_pools.h>
  62 #include <apr_strings.h>
  63
  64 #include <dlfcn.h>
  65
  66 #include "Display.hpp"
  67 #include "Replace.hpp"
  68
  69 #include "Cycript.tab.hh"
  70 #include "Driver.hpp"
  71
  72 static volatile enum {
  73     Working,
  74     Parsing,
  75     Running,
  76     Sending,
  77     Waiting,
  78 } mode_;
  79
  80 static jmp_buf ctrlc_;
  81
  82 static void sigint(int) {
  83     switch (mode_) {
  84         case Working:
  85             return;
  86         case Parsing:
  87             longjmp(ctrlc_, 1);
  88         case Running:
  89             throw "*** Ctrl-C";
  90         case Sending:
  91             return;
  92         case Waiting:
  93             return;
  94     }
  95 }
  96
  97 #if YYDEBUG
  98 static bool bison_;
  99 #endif
 100 static bool strict_;
 101 static bool pretty_;
 102
 103 void Setup(CYDriver &driver, cy::parser &parser) {
 104 #if YYDEBUG
 105     if (bison_)
 106         parser.set_debug_level(1);
 107 #endif
 108     if (strict_)
 109         driver.strict_ = true;
 110 }
 111
 112 void Setup(CYOutput &out, CYDriver &driver, CYOptions &options) {
 113     out.pretty_ = pretty_;
 114     CYContext context(options);
 115     driver.program_->Replace(context);
 116 }
 117
 118 static CYUTF8String Run(CYPool &pool, int client, CYUTF8String code) {
 119     const char *json;
 120     uint32_t size;
 121
 122     if (client == -1) {
 123         mode_ = Running;
 124 #ifdef CY_EXECUTE
 125         json = CYExecute(pool, code);
 126 #else
 127         json = NULL;
 128 #endif
 129         mode_ = Working;
 130         if (json == NULL)
 131             size = 0;
 132         else
 133             size = strlen(json);
 134     } else {
 135         mode_ = Sending;
 136         size = code.size;
 137         CYSendAll(client, &size, sizeof(size));
 138         CYSendAll(client, code.data, code.size);
 139         mode_ = Waiting;
 140         CYRecvAll(client, &size, sizeof(size));
 141         if (size == _not(uint32_t))
 142             json = NULL;
 143         else {
 144             char *temp(new(pool) char[size + 1]);
 145             CYRecvAll(client, temp, size);
 146             temp[size] = '\0';
 147             json = temp;
 148         }
 149         mode_ = Working;
 150     }
 151
 152     return CYUTF8String(json, size);
 153 }
 154
 155 static CYUTF8String Run(CYPool &pool, int client, const std::string &code) {
 156     return Run(pool, client, CYUTF8String(code.c_str(), code.size()));
 157 }
 158
 159 static std::ostream *out_;
 160
 161 static void Write(bool syntax, const char *data, size_t size, std::ostream &out) {
 162     if (syntax)
 163         CYLexerHighlight(data, size, out);
 164     else
 165         out.write(data, size);
 166 }
 167
 168 static void Output(bool syntax, CYUTF8String json, std::ostream *out, bool expand = false) {
 169     const char *data(json.data);
 170     size_t size(json.size);
 171
 172     if (data == NULL || out == NULL)
 173         return;
 174
 175     if (!expand ||
 176         data[0] != '@' && data[0] != '"' && data[0] != '\'' ||
 177         data[0] == '@' && data[1] != '"' && data[1] != '\''
 178     )
 179         Write(syntax, data, size, *out);
 180     else for (size_t i(0); i != size; ++i)
 181         if (data[i] != '\\')
 182             *out << data[i];
 183         else switch(data[++i]) {
 184             case '\0': goto done;
 185             case '\\': *out << '\\'; break;
 186             case '\'': *out << '\''; break;
 187             case '"': *out << '"'; break;
 188             case 'b': *out << '\b'; break;
 189             case 'f': *out << '\f'; break;
 190             case 'n': *out << '\n'; break;
 191             case 'r': *out << '\r'; break;
 192             case 't': *out << '\t'; break;
 193             case 'v': *out << '\v'; break;
 194             default: *out << '\\'; --i; break;
 195         }
 196
 197   done:
 198     *out << std::endl;
 199 }
 200
 201 static void Run(int client, bool syntax, const char *data, size_t size, std::ostream *out = NULL, bool expand = false) {
 202     CYPool pool;
 203     Output(syntax, Run(pool, client, CYUTF8String(data, size)), out, expand);
 204 }
 205
 206 static void Run(int client, bool syntax, std::string &code, std::ostream *out = NULL, bool expand = false) {
 207     Run(client, syntax, code.c_str(), code.size(), out, expand);
 208 }
 209
 210 int (*append_history$)(int, const char *);
 211
 212 static std::string command_;
 213
 214 static CYExpression *ParseExpression(CYUTF8String code) {
 215     std::stringstream stream;
 216     stream << '(' << code << ')';
 217     CYDriver driver(stream);
 218
 219     cy::parser parser(driver);
 220     Setup(driver, parser);
 221
 222     if (parser.parse() != 0 || !driver.errors_.empty())
 223         return NULL;
 224
 225     CYOptions options;
 226     CYContext context(options);
 227
 228     // XXX: this could be replaced with a CYStatement::Primitive()
 229     if (CYExpress *express = dynamic_cast<CYExpress *>(driver.program_->statements_))
 230         return express->expression_->Primitive(context);
 231
 232     return NULL;
 233 }
 234
 235 static int client_;
 236
 237 static char **Complete(const char *word, int start, int end) {
 238     rl_attempted_completion_over = TRUE;
 239
 240     CYLocalPool pool;
 241
 242     std::string line(rl_line_buffer, start);
 243     std::istringstream stream(command_ + line);
 244     CYDriver driver(stream);
 245
 246     driver.auto_ = true;
 247
 248     cy::parser parser(driver);
 249     Setup(driver, parser);
 250
 251     if (parser.parse() != 0 || !driver.errors_.empty())
 252         return NULL;
 253
 254     if (driver.mode_ == CYDriver::AutoNone)
 255         return NULL;
 256
 257     CYExpression *expression;
 258
 259     CYOptions options;
 260     CYContext context(options);
 261
 262     std::ostringstream prefix;
 263
 264     switch (driver.mode_) {
 265         case CYDriver::AutoPrimary:
 266             expression = $ CYThis();
 267         break;
 268
 269         case CYDriver::AutoDirect:
 270             expression = driver.context_;
 271         break;
 272
 273         case CYDriver::AutoIndirect:
 274             expression = $ CYIndirect(driver.context_);
 275         break;
 276
 277         case CYDriver::AutoMessage: {
 278             CYDriver::Context &thing(driver.contexts_.back());
 279             expression = $M($C1($V("object_getClass"), thing.context_), $S("messages"));
 280             for (CYDriver::Context::Words::const_iterator part(thing.words_.begin()); part != thing.words_.end(); ++part)
 281                 prefix << (*part)->word_ << ':';
 282         } break;
 283
 284         default:
 285             _assert(false);
 286     }
 287
 288     std::string begin(prefix.str());
 289
 290     driver.program_ = $ CYProgram($ CYExpress($C3(ParseExpression(
 291     "   function(object, prefix, word) {\n"
 292     "       var names = [];\n"
 293     "       var before = prefix.length;\n"
 294     "       prefix += word;\n"
 295     "       var entire = prefix.length;\n"
 296     "       for (name in object)\n"
 297     "           if (name.substring(0, entire) == prefix)\n"
 298     "               names.push(name.substr(before));\n"
 299     "       return names;\n"
 300     "   }\n"
 301     ), expression, $S(begin.c_str()), $S(word))));
 302
 303     driver.program_->Replace(context);
 304
 305     std::ostringstream str;
 306     CYOutput out(str, options);
 307     out << *driver.program_;
 308
 309     std::string code(str.str());
 310     CYUTF8String json(Run(pool, client_, code));
 311     // XXX: if this fails we should not try to parse it
 312
 313     CYExpression *result(ParseExpression(json));
 314     if (result == NULL)
 315         return NULL;
 316
 317     CYArray *array(dynamic_cast<CYArray *>(result));
 318
 319     if (array == NULL) {
 320         *out_ << '\n';
 321         Output(false, json, out_);
 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     CYForEach (element, array->elements_) {
 334         CYString *string(dynamic_cast<CYString *>(element->value_));
 335         _assert(string != NULL);
 336
 337         std::string completion;
 338         if (string->size_ != 0)
 339             completion.assign(string->value_, string->size_);
 340         else if (driver.mode_ == CYDriver::AutoMessage)
 341             completion = "]";
 342         else
 343             continue;
 344
 345         completions.push_back(completion);
 346
 347         if (!rest) {
 348             common = completion;
 349             rest = true;
 350         } else {
 351             size_t limit(completion.size()), size(common.size());
 352             if (size > limit)
 353                 common = common.substr(0, limit);
 354             else
 355                 limit = size;
 356             for (limit = 0; limit != size; ++limit)
 357                 if (common[limit] != completion[limit])
 358                     break;
 359             if (limit != size)
 360                 common = common.substr(0, limit);
 361         }
 362     }
 363
 364     size_t count(completions.size());
 365     if (count == 0)
 366         return NULL;
 367
 368     size_t colon(common.find(':'));
 369     if (colon != std::string::npos)
 370         common = common.substr(0, colon + 1);
 371     if (completions.size() == 1)
 372         common += ' ';
 373
 374     char **results(reinterpret_cast<char **>(malloc(sizeof(char *) * (count + 2))));
 375
 376     results[0] = strdup(common.c_str());
 377     size_t index(0);
 378     for (Completions::const_iterator i(completions.begin()); i != completions.end(); ++i)
 379         results[++index] = strdup(i->c_str());
 380     results[count + 1] = NULL;
 381
 382     return results;
 383 }
 384
 385 // need char *, not const char *
 386 static char name_[] = "cycript";
 387 static char break_[] = " \t\n\"\\'`@$><=;|&{(" ")}" ".:[]";
 388
 389 static void Console(CYOptions &options) {
 390     CYPool pool;
 391
 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(pool.strcat(passwd->pw_dir, "/.cycript", NULL));
 399     const char *histfile(pool.strcat(basedir, "/history", NULL));
 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     bool syntax(true);
 412
 413     out_ = &std::cout;
 414
 415     // rl_completer_word_break_characters is broken in libedit
 416     rl_basic_word_break_characters = break_;
 417
 418     rl_completer_word_break_characters = break_;
 419     rl_attempted_completion_function = &Complete;
 420     rl_bind_key('\t', rl_complete);
 421
 422     struct sigaction action;
 423     sigemptyset(&action.sa_mask);
 424     action.sa_handler = &sigint;
 425     action.sa_flags = 0;
 426     sigaction(SIGINT, &action, NULL);
 427
 428     restart: for (;;) {
 429         command_.clear();
 430         std::vector<std::string> lines;
 431
 432         bool extra(false);
 433         const char *prompt("cy# ");
 434
 435         if (setjmp(ctrlc_) != 0) {
 436             mode_ = Working;
 437             *out_ << std::endl;
 438             goto restart;
 439         }
 440
 441       read:
 442
 443 #if RL_READLINE_VERSION >= 0x0600
 444         if (syntax) {
 445             rl_prep_term_function = CYDisplayStart;
 446             rl_redisplay_function = CYDisplayUpdate;
 447             rl_deprep_term_function = CYDisplayFinish;
 448         } else {
 449             rl_prep_term_function = rl_prep_terminal;
 450             rl_redisplay_function = rl_redisplay;
 451             rl_deprep_term_function = rl_deprep_terminal;
 452         }
 453 #endif
 454
 455         mode_ = Parsing;
 456         char *line(readline(prompt));
 457         mode_ = Working;
 458
 459         if (line == NULL)
 460             break;
 461         if (line[0] == '\0')
 462             goto read;
 463
 464         if (!extra) {
 465             extra = true;
 466             if (line[0] == '?') {
 467                 std::string data(line + 1);
 468                 if (data == "bypass") {
 469                     bypass = !bypass;
 470                     *out_ << "bypass == " << (bypass ? "true" : "false") << std::endl;
 471                 } else if (data == "debug") {
 472                     debug = !debug;
 473                     *out_ << "debug == " << (debug ? "true" : "false") << std::endl;
 474                 } else if (data == "expand") {
 475                     expand = !expand;
 476                     *out_ << "expand == " << (expand ? "true" : "false") << std::endl;
 477                 } else if (data == "syntax") {
 478                     syntax = !syntax;
 479                     *out_ << "syntax == " << (syntax ? "true" : "false") << std::endl;
 480                 }
 481                 add_history(line);
 482                 ++histlines;
 483                 goto restart;
 484             }
 485         }
 486
 487         command_ += line;
 488
 489         char *begin(line), *end(line + strlen(line));
 490         while (char *nl = reinterpret_cast<char *>(memchr(begin, '\n', end - begin))) {
 491             *nl = '\0';
 492             lines.push_back(begin);
 493             begin = nl + 1;
 494         }
 495
 496         lines.push_back(begin);
 497
 498         free(line);
 499
 500         std::string code;
 501
 502         if (bypass)
 503             code = command_;
 504         else {
 505             CYLocalPool pool;
 506
 507             std::istringstream stream(command_);
 508             CYDriver driver(stream);
 509
 510             cy::parser parser(driver);
 511             Setup(driver, parser);
 512
 513             if (parser.parse() != 0 || !driver.errors_.empty()) {
 514                 for (CYDriver::Errors::const_iterator error(driver.errors_.begin()); error != driver.errors_.end(); ++error) {
 515                     cy::position begin(error->location_.begin);
 516                     if (begin.line != lines.size() || begin.column < lines.back().size() || error->warning_) {
 517                         cy::position end(error->location_.end);
 518
 519                         if (begin.line != lines.size()) {
 520                             std::cerr << "  | ";
 521                             std::cerr << lines[begin.line - 1] << std::endl;
 522                         }
 523
 524                         std::cerr << "....";
 525                         for (size_t i(0); i != begin.column; ++i)
 526                             std::cerr << '.';
 527                         if (begin.line != end.line || begin.column == end.column)
 528                             std::cerr << '^';
 529                         else for (size_t i(0), e(end.column - begin.column); i != e; ++i)
 530                             std::cerr << '^';
 531                         std::cerr << std::endl;
 532
 533                         std::cerr << "  | ";
 534                         std::cerr << error->message_ << std::endl;
 535
 536                         add_history(command_.c_str());
 537                         ++histlines;
 538                         goto restart;
 539                     }
 540                 }
 541
 542                 driver.errors_.clear();
 543
 544                 command_ += '\n';
 545                 prompt = "cy> ";
 546                 goto read;
 547             }
 548
 549             if (driver.program_ == NULL)
 550                 goto restart;
 551
 552             if (client_ != -1)
 553                 code = command_;
 554             else {
 555                 std::ostringstream str;
 556                 CYOutput out(str, options);
 557                 Setup(out, driver, options);
 558                 out << *driver.program_;
 559                 code = str.str();
 560             }
 561         }
 562
 563         add_history(command_.c_str());
 564         ++histlines;
 565
 566         if (debug) {
 567             Write(syntax, code.c_str(), code.size(), std::cout);
 568             std::cout << std::endl;
 569         }
 570
 571         Run(client_, syntax, code, out_, expand);
 572     }
 573
 574     if (append_history$ != NULL) {
 575         _syscall(close(_syscall(open(histfile, O_CREAT | O_WRONLY, 0600))));
 576         (*append_history$)(histlines, histfile);
 577     } else {
 578         write_history(histfile);
 579     }
 580
 581     *out_ << std::endl;
 582 }
 583
 584 static void *Map(const char *path, size_t *psize) {
 585     int fd;
 586     _syscall(fd = open(path, O_RDONLY));
 587
 588     struct stat stat;
 589     _syscall(fstat(fd, &stat));
 590     size_t size(stat.st_size);
 591
 592     *psize = size;
 593
 594     void *base;
 595     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
 596
 597     _syscall(close(fd));
 598     return base;
 599 }
 600
 601 void InjectLibrary(pid_t pid);
 602
 603 int Main(int argc, char const * const argv[], char const * const envp[]) {
 604     _aprcall(apr_initialize());
 605
 606     apr_pool_t *pool;
 607     apr_pool_create(&pool, NULL);
 608
 609     bool tty(isatty(STDIN_FILENO));
 610     bool compile(false);
 611     CYOptions options;
 612
 613     append_history$ = (int (*)(int, const char *)) (dlsym(RTLD_DEFAULT, "append_history"));
 614
 615 #ifdef CY_ATTACH
 616     pid_t pid(_not(pid_t));
 617 #endif
 618
 619     apr_getopt_t *state;
 620     _aprcall(apr_getopt_init(&state, pool, argc, argv));
 621
 622     for (;;) {
 623         char opt;
 624         const char *arg;
 625
 626         apr_status_t status(apr_getopt(state,
 627             "cg:n:"
 628 #ifdef CY_ATTACH
 629             "p:"
 630 #endif
 631             "s"
 632         , &opt, &arg));
 633
 634         switch (status) {
 635             case APR_EOF:
 636                 goto getopt;
 637             case APR_BADCH:
 638             case APR_BADARG:
 639                 fprintf(stderr,
 640                     "usage: cycript [-c]"
 641 #ifdef CY_ATTACH
 642                     " [-p <pid|name>]"
 643 #endif
 644                     " [<script> [<arg>...]]\n"
 645                 );
 646                 return 1;
 647             default:
 648                 _aprcall(status);
 649         }
 650
 651         switch (opt) {
 652             case 'c':
 653                 compile = true;
 654             break;
 655
 656             case 'g':
 657                 if (false);
 658                 else if (strcmp(arg, "rename") == 0)
 659                     options.verbose_ = true;
 660 #if YYDEBUG
 661                 else if (strcmp(arg, "bison") == 0)
 662                     bison_ = true;
 663 #endif
 664                 else {
 665                     fprintf(stderr, "invalid name for -g\n");
 666                     return 1;
 667                 }
 668             break;
 669
 670             case 'n':
 671                 if (false);
 672                 else if (strcmp(arg, "minify") == 0)
 673                     pretty_ = true;
 674                 else {
 675                     fprintf(stderr, "invalid name for -n\n");
 676                     return 1;
 677                 }
 678             break;
 679
 680 #ifdef CY_ATTACH
 681             case 'p': {
 682                 size_t size(strlen(arg));
 683                 char *end;
 684
 685                 pid = strtoul(arg, &end, 0);
 686                 if (arg + size != end) {
 687                     // XXX: arg needs to be escaped in some horrendous way of doom
 688                     const char *command(apr_pstrcat(pool, "ps axc|sed -e '/^ *[0-9]/{s/^ *\\([0-9]*\\)\\( *[^ ]*\\)\\{3\\} *-*\\([^ ]*\\)/\\3 \\1/;/^", arg, " /{s/^[^ ]* //;q;};};d'", NULL));
 689
 690                     if (FILE *pids = popen(command, "r")) {
 691                         char value[32];
 692                         size = 0;
 693
 694                         for (;;) {
 695                             size_t read(fread(value + size, 1, sizeof(value) - size, pids));
 696                             if (read == 0)
 697                                 break;
 698                             else {
 699                                 size += read;
 700                                 if (size == sizeof(value)) {
 701                                     pid = _not(pid_t);
 702                                     goto fail;
 703                                 }
 704                             }
 705                         }
 706
 707                       size:
 708                         if (size == 0)
 709                             goto fail;
 710                         if (value[size - 1] == '\n') {
 711                             --size;
 712                             goto size;
 713                         }
 714
 715                         value[size] = '\0';
 716                         size = strlen(value);
 717                         pid = strtoul(value, &end, 0);
 718                         if (value + size != end) fail:
 719                             pid = _not(pid_t);
 720                         _syscall(pclose(pids));
 721                     }
 722
 723                     if (pid == _not(pid_t)) {
 724                         fprintf(stderr, "invalid pid for -p\n");
 725                         return 1;
 726                     }
 727                 }
 728             } break;
 729 #endif
 730
 731             case 's':
 732                 strict_ = true;
 733             break;
 734         }
 735     } getopt:;
 736
 737     const char *script;
 738     int ind(state->ind);
 739
 740 #ifdef CY_ATTACH
 741     if (pid != _not(pid_t) && ind < argc - 1) {
 742         fprintf(stderr, "-p cannot set argv\n");
 743         return 1;
 744     }
 745
 746     if (pid != _not(pid_t) && compile) {
 747         fprintf(stderr, "-p conflicts with -c\n");
 748         return 1;
 749     }
 750 #endif
 751
 752     if (ind == argc)
 753         script = NULL;
 754     else {
 755 #ifdef CY_EXECUTE
 756         // XXX: const_cast?! wtf gcc :(
 757         CYSetArgs(argc - ind - 1, const_cast<const char **>(argv + ind + 1));
 758 #endif
 759         script = argv[ind];
 760         if (strcmp(script, "-") == 0)
 761             script = NULL;
 762     }
 763
 764 #ifdef CY_ATTACH
 765     if (pid != _not(pid_t) && script == NULL && !tty) {
 766         fprintf(stderr, "non-terminal attaching to remote console\n");
 767         return 1;
 768     }
 769 #endif
 770
 771 #ifdef CY_ATTACH
 772     if (pid == _not(pid_t))
 773         client_ = -1;
 774     else {
 775         int server(_syscall(socket(PF_UNIX, SOCK_STREAM, 0))); try {
 776             struct sockaddr_un address;
 777             memset(&address, 0, sizeof(address));
 778             address.sun_family = AF_UNIX;
 779
 780             sprintf(address.sun_path, "/tmp/.s.cy.%u", getpid());
 781
 782             _syscall(bind(server, reinterpret_cast<sockaddr *>(&address), SUN_LEN(&address)));
 783             _syscall(chmod(address.sun_path, 0777));
 784
 785             try {
 786                 _syscall(listen(server, 1));
 787                 InjectLibrary(pid);
 788                 client_ = _syscall(accept(server, NULL, NULL));
 789             } catch (...) {
 790                 // XXX: exception?
 791                 unlink(address.sun_path);
 792                 throw;
 793             }
 794         } catch (...) {
 795             _syscall(close(server));
 796             throw;
 797         }
 798     }
 799 #else
 800     client_ = -1;
 801 #endif
 802
 803     if (script == NULL && tty)
 804         Console(options);
 805     else {
 806         CYLocalPool pool;
 807
 808         char *start, *end;
 809         std::istream *indirect;
 810
 811         if (script == NULL) {
 812             start = NULL;
 813             end = NULL;
 814             indirect = &std::cin;
 815         } else {
 816             size_t size;
 817             start = reinterpret_cast<char *>(Map(script, &size));
 818             end = start + size;
 819
 820             if (size >= 2 && start[0] == '#' && start[1] == '!') {
 821                 start += 2;
 822
 823                 if (void *line = memchr(start, '\n', end - start))
 824                     start = reinterpret_cast<char *>(line);
 825                 else
 826                     start = end;
 827             }
 828
 829             indirect = NULL;
 830         }
 831
 832         CYStream direct(start, end);
 833         std::istream &stream(indirect == NULL ? direct : *indirect);
 834         CYDriver driver(stream, script ?: "<stdin>");
 835
 836         cy::parser parser(driver);
 837         Setup(driver, parser);
 838
 839         if (parser.parse() != 0 || !driver.errors_.empty()) {
 840             for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i)
 841                 std::cerr << i->location_.begin << ": " << i->message_ << std::endl;
 842         } else if (driver.program_ != NULL)
 843             if (client_ != -1) {
 844                 // XXX: this code means that you can't pipe to another process
 845                 std::string code(start, end-start);
 846                 Run(client_, false, code, &std::cout);
 847             } else {
 848                 std::ostringstream str;
 849                 CYOutput out(str, options);
 850                 Setup(out, driver, options);
 851                 out << *driver.program_;
 852                 std::string code(str.str());
 853                 if (compile)
 854                     std::cout << code;
 855                 else
 856                     Run(client_, false, code, &std::cout);
 857             }
 858     }
 859
 860     apr_pool_destroy(pool);
 861
 862     return 0;
 863 }
 864
 865 int main(int argc, char const * const argv[], char const * const envp[]) {
 866     apr_status_t status(apr_app_initialize(&argc, &argv, &envp));
 867
 868     if (status != APR_SUCCESS) {
 869         fprintf(stderr, "apr_app_initialize() != APR_SUCCESS\n");
 870         return 1;
 871     } else try {
 872         return Main(argc, argv, envp);
 873     } catch (const CYException &error) {
 874         CYPool pool;
 875         fprintf(stderr, "%s\n", error.PoolCString(pool));
 876         return 1;
 877     }
 878 }