Console.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2012  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU Lesser General Public License, Version 3 {{{ */
   6 /*
   7  * Cycript is free software: you can redistribute it and/or modify it under
   8  * the terms of the GNU Lesser General Public License as published by the
   9  * Free Software Foundation, either version 3 of the License, or (at your
  10  * option) any later version.
  11  *
  12  * Cycript is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  15  * License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public License
  18  * along with Cycript.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "cycript.hpp"
  23
  24 #ifdef CY_EXECUTE
  25 #include "JavaScript.hpp"
  26 #endif
  27
  28 #include <cstdio>
  29 #include <sstream>
  30
  31 #include <setjmp.h>
  32
  33 #ifdef HAVE_READLINE_H
  34 #include <readline.h>
  35 #else
  36 #include <readline/readline.h>
  37 #endif
  38
  39 #ifdef HAVE_HISTORY_H
  40 #include <history.h>
  41 #else
  42 #include <readline/history.h>
  43 #endif
  44
  45 #include <sys/mman.h>
  46
  47 #include <errno.h>
  48 #include <unistd.h>
  49
  50 #include <sys/types.h>
  51 #include <sys/stat.h>
  52 #include <fcntl.h>
  53
  54 #include "Cycript.tab.hh"
  55
  56 #include <sys/types.h>
  57 #include <sys/socket.h>
  58 #include <netinet/in.h>
  59 #include <sys/un.h>
  60 #include <pwd.h>
  61
  62 #include <apr_getopt.h>
  63
  64 #include <dlfcn.h>
  65
  66 #include "Replace.hpp"
  67
  68 static volatile enum {
  69     Working,
  70     Parsing,
  71     Running,
  72     Sending,
  73     Waiting,
  74 } mode_;
  75
  76 static jmp_buf ctrlc_;
  77
  78 static void sigint(int) {
  79     switch (mode_) {
  80         case Working:
  81             return;
  82         case Parsing:
  83             longjmp(ctrlc_, 1);
  84         case Running:
  85             throw "*** Ctrl-C";
  86         case Sending:
  87             return;
  88         case Waiting:
  89             return;
  90     }
  91 }
  92
  93 #if YYDEBUG
  94 static bool bison_;
  95 #endif
  96 static bool strict_;
  97 static bool pretty_;
  98
  99 void Setup(CYDriver &driver, cy::parser &parser) {
 100 #if YYDEBUG
 101     if (bison_)
 102         parser.set_debug_level(1);
 103 #endif
 104     if (strict_)
 105         driver.strict_ = true;
 106 }
 107
 108 void Setup(CYOutput &out, CYDriver &driver, CYOptions &options) {
 109     out.pretty_ = pretty_;
 110     CYContext context(options);
 111     driver.program_->Replace(context);
 112 }
 113
 114 static CYUTF8String Run(CYPool &pool, int client, CYUTF8String code) {
 115     const char *json;
 116     size_t size;
 117
 118     if (client == -1) {
 119         mode_ = Running;
 120 #ifdef CY_EXECUTE
 121         json = CYExecute(pool, code);
 122 #else
 123         json = NULL;
 124 #endif
 125         mode_ = Working;
 126         if (json == NULL)
 127             size = 0;
 128         else
 129             size = strlen(json);
 130     } else {
 131         mode_ = Sending;
 132         size = code.size;
 133         CYSendAll(client, &size, sizeof(size));
 134         CYSendAll(client, code.data, code.size);
 135         mode_ = Waiting;
 136         CYRecvAll(client, &size, sizeof(size));
 137         if (size == _not(size_t))
 138             json = NULL;
 139         else {
 140             char *temp(new(pool) char[size + 1]);
 141             CYRecvAll(client, temp, size);
 142             temp[size] = '\0';
 143             json = temp;
 144         }
 145         mode_ = Working;
 146     }
 147
 148     return CYUTF8String(json, size);
 149 }
 150
 151 static CYUTF8String Run(CYPool &pool, int client, const std::string &code) {
 152     return Run(pool, client, CYUTF8String(code.c_str(), code.size()));
 153 }
 154
 155 FILE *fout_;
 156
 157 static void Output(CYUTF8String json, FILE *fout, bool expand = false) {
 158     const char *data(json.data);
 159     size_t size(json.size);
 160
 161     if (data == NULL || fout == NULL)
 162         return;
 163
 164     if (!expand ||
 165         data[0] != '@' && data[0] != '"' && data[0] != '\'' ||
 166         data[0] == '@' && data[1] != '"' && data[1] != '\''
 167     )
 168         fputs(data, fout);
 169     else for (size_t i(0); i != size; ++i)
 170         if (data[i] != '\\')
 171             fputc(data[i], fout);
 172         else switch(data[++i]) {
 173             case '\0': goto done;
 174             case '\\': fputc('\\', fout); break;
 175             case '\'': fputc('\'', fout); break;
 176             case '"': fputc('"', fout); break;
 177             case 'b': fputc('\b', fout); break;
 178             case 'f': fputc('\f', fout); break;
 179             case 'n': fputc('\n', fout); break;
 180             case 'r': fputc('\r', fout); break;
 181             case 't': fputc('\t', fout); break;
 182             case 'v': fputc('\v', fout); break;
 183             default: fputc('\\', fout); --i; break;
 184         }
 185
 186   done:
 187     fputs("\n", fout);
 188     fflush(fout);
 189 }
 190
 191 static void Run(int client, const char *data, size_t size, FILE *fout = NULL, bool expand = false) {
 192     CYPool pool;
 193     Output(Run(pool, client, CYUTF8String(data, size)), fout, expand);
 194 }
 195
 196 static void Run(int client, std::string &code, FILE *fout = NULL, bool expand = false) {
 197     Run(client, code.c_str(), code.size(), fout, expand);
 198 }
 199
 200 int (*append_history$)(int, const char *);
 201
 202 static std::string command_;
 203
 204 static CYExpression *ParseExpression(CYUTF8String code) {
 205     std::ostringstream str;
 206     str << '(' << code << ')';
 207     std::string string(str.str());
 208
 209     CYDriver driver;
 210     driver.data_ = string.c_str();
 211     driver.size_ = string.size();
 212
 213     cy::parser parser(driver);
 214     Setup(driver, parser);
 215
 216     if (parser.parse() != 0 || !driver.errors_.empty())
 217         return NULL;
 218
 219     CYOptions options;
 220     CYContext context(options);
 221
 222     // XXX: this could be replaced with a CYStatement::Primitive()
 223     if (CYExpress *express = dynamic_cast<CYExpress *>(driver.program_->statements_))
 224         return express->expression_->Primitive(context);
 225
 226     return NULL;
 227 }
 228
 229 static int client_;
 230
 231 static char **Complete(const char *word, int start, int end) {
 232     rl_attempted_completion_over = TRUE;
 233
 234     CYLocalPool pool;
 235     CYDriver driver;
 236     cy::parser parser(driver);
 237     Setup(driver, parser);
 238
 239     std::string line(rl_line_buffer, start);
 240     std::string command(command_ + line);
 241
 242     driver.data_ = command.c_str();
 243     driver.size_ = command.size();
 244
 245     driver.auto_ = true;
 246
 247     if (parser.parse() != 0 || !driver.errors_.empty())
 248         return NULL;
 249
 250     if (driver.mode_ == CYDriver::AutoNone)
 251         return NULL;
 252
 253     CYExpression *expression;
 254
 255     CYOptions options;
 256     CYContext context(options);
 257
 258     std::ostringstream prefix;
 259
 260     switch (driver.mode_) {
 261         case CYDriver::AutoPrimary:
 262             expression = $ CYThis();
 263         break;
 264
 265         case CYDriver::AutoDirect:
 266             expression = driver.context_;
 267         break;
 268
 269         case CYDriver::AutoIndirect:
 270             expression = $ CYIndirect(driver.context_);
 271         break;
 272
 273         case CYDriver::AutoMessage: {
 274             CYDriver::Context &thing(driver.contexts_.back());
 275             expression = $M($C1($V("object_getClass"), thing.context_), $S("messages"));
 276             for (CYDriver::Context::Words::const_iterator part(thing.words_.begin()); part != thing.words_.end(); ++part)
 277                 prefix << (*part)->word_ << ':';
 278         } break;
 279
 280         default:
 281             _assert(false);
 282     }
 283
 284     std::string begin(prefix.str());
 285
 286     driver.program_ = $ CYProgram($ CYExpress($C3(ParseExpression(
 287     "   function(object, prefix, word) {\n"
 288     "       var names = [];\n"
 289     "       var before = prefix.length;\n"
 290     "       prefix += word;\n"
 291     "       var entire = prefix.length;\n"
 292     "       for (name in object)\n"
 293     "           if (name.substring(0, entire) == prefix)\n"
 294     "               names.push(name.substr(before));\n"
 295     "       return names;\n"
 296     "   }\n"
 297     ), expression, $S(begin.c_str()), $S(word))));
 298
 299     driver.program_->Replace(context);
 300
 301     std::ostringstream str;
 302     CYOutput out(str, options);
 303     out << *driver.program_;
 304
 305     std::string code(str.str());
 306     CYUTF8String json(Run(pool, client_, code));
 307     // 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         fprintf(fout_, "\n");
 317         Output(json, fout_);
 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
 408     fout_ = stdout;
 409
 410     // rl_completer_word_break_characters is broken in libedit
 411     rl_basic_word_break_characters = break_;
 412
 413     rl_completer_word_break_characters = break_;
 414     rl_attempted_completion_function = &Complete;
 415     rl_bind_key('\t', rl_complete);
 416
 417     struct sigaction action;
 418     sigemptyset(&action.sa_mask);
 419     action.sa_handler = &sigint;
 420     action.sa_flags = 0;
 421     sigaction(SIGINT, &action, NULL);
 422
 423     restart: for (;;) {
 424         command_.clear();
 425         std::vector<std::string> lines;
 426
 427         bool extra(false);
 428         const char *prompt("cy# ");
 429
 430         if (setjmp(ctrlc_) != 0) {
 431             mode_ = Working;
 432             fputs("\n", fout_);
 433             fflush(fout_);
 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                     fprintf(fout_, "bypass == %s\n", bypass ? "true" : "false");
 453                     fflush(fout_);
 454                 } else if (data == "debug") {
 455                     debug = !debug;
 456                     fprintf(fout_, "debug == %s\n", debug ? "true" : "false");
 457                     fflush(fout_);
 458                 } else if (data == "expand") {
 459                     expand = !expand;
 460                     fprintf(fout_, "expand == %s\n", expand ? "true" : "false");
 461                     fflush(fout_);
 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             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 < 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             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$)(histlines, histfile);
 557     } else {
 558         write_history(histfile);
 559     }
 560
 561     fputs("\n", fout_);
 562     fflush(fout_);
 563 }
 564
 565 static void *Map(const char *path, size_t *psize) {
 566     int fd;
 567     _syscall(fd = open(path, O_RDONLY));
 568
 569     struct stat stat;
 570     _syscall(fstat(fd, &stat));
 571     size_t size(stat.st_size);
 572
 573     *psize = size;
 574
 575     void *base;
 576     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
 577
 578     _syscall(close(fd));
 579     return base;
 580 }
 581
 582 void InjectLibrary(pid_t pid);
 583
 584 int Main(int argc, char const * const argv[], char const * const envp[]) {
 585     bool tty(isatty(STDIN_FILENO));
 586     bool compile(false);
 587     CYOptions options;
 588
 589     append_history$ = (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(options);
 782     else {
 783         CYLocalPool pool;
 784         CYDriver driver(script ?: "<stdin>");
 785         cy::parser parser(driver);
 786         Setup(driver, parser);
 787
 788         char *start, *end;
 789
 790         if (script == NULL) {
 791             start = NULL;
 792             end = NULL;
 793
 794             driver.file_ = stdin;
 795         } else {
 796             size_t size;
 797             start = reinterpret_cast<char *>(Map(script, &size));
 798             end = start + size;
 799
 800             if (size >= 2 && start[0] == '#' && start[1] == '!') {
 801                 start += 2;
 802
 803                 if (void *line = memchr(start, '\n', end - start))
 804                     start = reinterpret_cast<char *>(line);
 805                 else
 806                     start = end;
 807             }
 808
 809             driver.data_ = start;
 810             driver.size_ = end - start;
 811         }
 812
 813         if (parser.parse() != 0 || !driver.errors_.empty()) {
 814             for (CYDriver::Errors::const_iterator i(driver.errors_.begin()); i != driver.errors_.end(); ++i)
 815                 std::cerr << i->location_.begin << ": " << i->message_ << std::endl;
 816         } else if (driver.program_ != NULL)
 817             if (client_ != -1) {
 818                 std::string code(start, end-start);
 819                 Run(client_, code, stdout);
 820             } else {
 821                 std::ostringstream str;
 822                 CYOutput out(str, options);
 823                 Setup(out, driver, options);
 824                 out << *driver.program_;
 825                 std::string code(str.str());
 826                 if (compile)
 827                     std::cout << code;
 828                 else
 829                     Run(client_, code, stdout);
 830             }
 831     }
 832
 833     return 0;
 834 }
 835
 836 int main(int argc, char const * const argv[], char const * const envp[]) {
 837     apr_status_t status(apr_app_initialize(&argc, &argv, &envp));
 838
 839     if (status != APR_SUCCESS) {
 840         fprintf(stderr, "apr_app_initialize() != APR_SUCCESS\n");
 841         return 1;
 842     } else try {
 843         return Main(argc, argv, envp);
 844     } catch (const CYException &error) {
 845         CYPool pool;
 846         fprintf(stderr, "%s\n", error.PoolCString(pool));
 847         return 1;
 848     }
 849 }