GeezerVisonThe World Wide Web, restored to 800 pixels of glory. |
| Home|About|Gaming cabinet|Archives|How it works|Starter sites |
GeezerVison is showing github.com — sqlcipher/src/shell.c.in at master · securitykernel/sqlcipher Expand file tree/ Copy pathshell.c.inMore file actions 10663 lines (10132 loc) · 333 KB / Copy pathshell.c.inFile metadata and controls10663 lines (10132 loc) · 333 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 /* ** 2001 September 15 ** ** The author disclaims copyright to this source code. In place of ** a legal notice, here is a blessing: ** ** May you do good and not evil. ** May you find forgiveness for yourself and forgive others. ** May you share freely, never taking more than you give. ** ************************************************************************* ** This file contains code to implement the "sqlite" command line ** utility for accessing SQLite databases. */ #if (defined(_WIN32) || defined(WIN32)) && !defined(_CRT_SECURE_NO_WARNINGS) /* This needs to come before any includes for MSVC compiler */ #define _CRT_SECURE_NO_WARNINGS #endif /* ** Warning pragmas copied from msvc.h in the core. */ #if defined(_MSC_VER) #pragma warning(disable : 4054) #pragma warning(disable : 4055) #pragma warning(disable : 4100) #pragma warning(disable : 4127) #pragma warning(disable : 4130) #pragma warning(disable : 4152) #pragma warning(disable : 4189) #pragma warning(disable : 4206) #pragma warning(disable : 4210) #pragma warning(disable : 4232) #pragma warning(disable : 4244) #pragma warning(disable : 4305) #pragma warning(disable : 4306) #pragma warning(disable : 4702) #pragma warning(disable : 4706) #endif /* defined(_MSC_VER) */ /* ** No support for loadable extensions in VxWorks. */ #if (defined(__RTP__) || defined(_WRS_KERNEL)) && !SQLITE_OMIT_LOAD_EXTENSION # define SQLITE_OMIT_LOAD_EXTENSION 1 #endif /* ** Enable large-file support for fopen() and friends on unix. */ #ifndef SQLITE_DISABLE_LFS # define _LARGE_FILE 1 # ifndef _FILE_OFFSET_BITS # define _FILE_OFFSET_BITS 64 # endif # define _LARGEFILE_SOURCE 1 #endif #include <stdlib.h> #include <string.h> #include <stdio.h> #include <assert.h> #include "sqlite3.h" typedef sqlite3_int64 i64; typedef sqlite3_uint64 u64; typedef unsigned char u8; #if SQLITE_USER_AUTHENTICATION # include "sqlite3userauth.h" #endif #include <ctype.h> #include <stdarg.h> #if !defined(_WIN32) && !defined(WIN32) # include <signal.h> # if !defined(__RTP__) && !defined(_WRS_KERNEL) # include <pwd.h> # endif #endif #if (!defined(_WIN32) && !defined(WIN32)) || defined(__MINGW32__) # include <unistd.h> # include <dirent.h> # define GETPID getpid # if defined(__MINGW32__) # define DIRENT dirent # ifndef S_ISLNK # define S_ISLNK(mode) (0) # endif # endif #else # define GETPID (int)GetCurrentProcessId #endif #include <sys/types.h> #include <sys/stat.h> #if HAVE_READLINE # include <readline/readline.h> # include <readline/history.h> #endif #if HAVE_EDITLINE # include <editline/readline.h> #endif #if HAVE_EDITLINE || HAVE_READLINE # define shell_add_history(X) add_history(X) # define shell_read_history(X) read_history(X) # define shell_write_history(X) write_history(X) # define shell_stifle_history(X) stifle_history(X) # define shell_readline(X) readline(X) #elif HAVE_LINENOISE # include "linenoise.h" # define shell_add_history(X) linenoiseHistoryAdd(X) # define shell_read_history(X) linenoiseHistoryLoad(X) # define shell_write_history(X) linenoiseHistorySave(X) # define shell_stifle_history(X) linenoiseHistorySetMaxLen(X) # define shell_readline(X) linenoise(X) #else # define shell_read_history(X) # define shell_write_history(X) # define shell_stifle_history(X) # define SHELL_USE_LOCAL_GETLINE 1 #endif #if defined(_WIN32) || defined(WIN32) # include <io.h> # include <fcntl.h> # define isatty(h) _isatty(h) # ifndef access # define access(f,m) _access((f),(m)) # endif # ifndef unlink # define unlink _unlink # endif # ifndef strdup # define strdup _strdup # endif # undef popen # define popen _popen # undef pclose # define pclose _pclose #else /* Make sure isatty() has a prototype. */ extern int isatty(int); # if !defined(__RTP__) && !defined(_WRS_KERNEL) /* popen and pclose are not C89 functions and so are ** sometimes omitted from the <stdio.h> header */ extern FILE *popen(const char*,const char*); extern int pclose(FILE*); # else # define SQLITE_OMIT_POPEN 1 # endif #endif #if defined(_WIN32_WCE) /* Windows CE (arm-wince-mingw32ce-gcc) does not provide isatty() * thus we always assume that we have a console. That can be * overridden with the -batch command line option. */ #define isatty(x) 1 #endif /* ctype macros that work with signed characters */ #define IsSpace(X) isspace((unsigned char)X) #define IsDigit(X) isdigit((unsigned char)X) #define ToLower(X) (char)tolower((unsigned char)X) #if defined(_WIN32) || defined(WIN32) #include <windows.h> /* string conversion routines only needed on Win32 */ extern char *sqlite3_win32_unicode_to_utf8(LPCWSTR); extern char *sqlite3_win32_mbcs_to_utf8_v2(const char *, int); extern char *sqlite3_win32_utf8_to_mbcs_v2(const char *, int); extern LPWSTR sqlite3_win32_utf8_to_unicode(const char *zText); #endif /* On Windows, we normally run with output mode of TEXT so that \n characters ** are automatically translated into \r\n. However, this behavior needs ** to be disabled in some cases (ex: when generating CSV output and when ** rendering quoted strings that contain \n characters). The following ** routines take care of that. */ #if defined(_WIN32) || defined(WIN32) static void setBinaryMode(FILE *file, int isOutput){ if( isOutput ) fflush(file); _setmode(_fileno(file), _O_BINARY); } static void setTextMode(FILE *file, int isOutput){ if( isOutput ) fflush(file); _setmode(_fileno(file), _O_TEXT); } #else # define setBinaryMode(X,Y) # define setTextMode(X,Y) #endif /* True if the timer is enabled */ static int enableTimer = 0; /* Return the current wall-clock time */ static sqlite3_int64 timeOfDay(void){ static sqlite3_vfs *clockVfs = 0; sqlite3_int64 t; if( clockVfs==0 ) clockVfs = sqlite3_vfs_find(0); if( clockVfs->iVersion>=2 && clockVfs->xCurrentTimeInt64!=0 ){ clockVfs->xCurrentTimeInt64(clockVfs, &t); }else{ double r; clockVfs->xCurrentTime(clockVfs, &r); t = (sqlite3_int64)(r*86400000.0); } return t; } #if !defined(_WIN32) && !defined(WIN32) && !defined(__minux) #include <sys/time.h> #include <sys/resource.h> /* VxWorks does not support getrusage() as far as we can determine */ #if defined(_WRS_KERNEL) || defined(__RTP__) struct rusage { struct timeval ru_utime; /* user CPU time used */ struct timeval ru_stime; /* system CPU time used */ }; #define getrusage(A,B) memset(B,0,sizeof(*B)) #endif /* Saved resource information for the beginning of an operation */ static struct rusage sBegin; /* CPU time at start */ static sqlite3_int64 iBegin; /* Wall-clock time at start */ /* ** Begin timing an operation */ static void beginTimer(void){ if( enableTimer ){ getrusage(RUSAGE_SELF, &sBegin); iBegin = timeOfDay(); } } /* Return the difference of two time_structs in seconds */ static double timeDiff(struct timeval *pStart, struct timeval *pEnd){ return (pEnd->tv_usec - pStart->tv_usec)*0.000001 + (double)(pEnd->tv_sec - pStart->tv_sec); } /* ** Print the timing results. */ static void endTimer(void){ if( enableTimer ){ sqlite3_int64 iEnd = timeOfDay(); struct rusage sEnd; getrusage(RUSAGE_SELF, &sEnd); printf("Run Time: real %.3f user %f sys %f\n", (iEnd - iBegin)*0.001, timeDiff(&sBegin.ru_utime, &sEnd.ru_utime), timeDiff(&sBegin.ru_stime, &sEnd.ru_stime)); } } #define BEGIN_TIMER beginTimer() #define END_TIMER endTimer() #define HAS_TIMER 1 #elif (defined(_WIN32) || defined(WIN32)) /* Saved resource information for the beginning of an operation */ static HANDLE hProcess; static FILETIME ftKernelBegin; static FILETIME ftUserBegin; static sqlite3_int64 ftWallBegin; typedef BOOL (WINAPI *GETPROCTIMES)(HANDLE, LPFILETIME, LPFILETIME, LPFILETIME, LPFILETIME); static GETPROCTIMES getProcessTimesAddr = NULL; /* ** Check to see if we have timer support. Return 1 if necessary ** support found (or found previously). */ static int hasTimer(void){ if( getProcessTimesAddr ){ return 1; } else { /* GetProcessTimes() isn't supported in WIN95 and some other Windows ** versions. See if the version we are running on has it, and if it ** does, save off a pointer to it and the current process handle. */ hProcess = GetCurrentProcess(); if( hProcess ){ HINSTANCE hinstLib = LoadLibrary(TEXT("Kernel32.dll")); if( NULL != hinstLib ){ getProcessTimesAddr = (GETPROCTIMES) GetProcAddress(hinstLib, "GetProcessTimes"); if( NULL != getProcessTimesAddr ){ return 1; } FreeLibrary(hinstLib); } } } return 0; } /* ** Begin timing an operation */ static void beginTimer(void){ if( enableTimer && getProcessTimesAddr ){ FILETIME ftCreation, ftExit; getProcessTimesAddr(hProcess,&ftCreation,&ftExit, &ftKernelBegin,&ftUserBegin); ftWallBegin = timeOfDay(); } } /* Return the difference of two FILETIME structs in seconds */ static double timeDiff(FILETIME *pStart, FILETIME *pEnd){ sqlite_int64 i64Start = *((sqlite_int64 *) pStart); sqlite_int64 i64End = *((sqlite_int64 *) pEnd); return (double) ((i64End - i64Start) / 10000000.0); } /* ** Print the timing results. */ static void endTimer(void){ if( enableTimer && getProcessTimesAddr){ FILETIME ftCreation, ftExit, ftKernelEnd, ftUserEnd; sqlite3_int64 ftWallEnd = timeOfDay(); getProcessTimesAddr(hProcess,&ftCreation,&ftExit,&ftKernelEnd,&ftUserEnd); printf("Run Time: real %.3f user %f sys %f\n", (ftWallEnd - ftWallBegin)*0.001, timeDiff(&ftUserBegin, &ftUserEnd), timeDiff(&ftKernelBegin, &ftKernelEnd)); } } #define BEGIN_TIMER beginTimer() #define END_TIMER endTimer() #define HAS_TIMER hasTimer() #else #define BEGIN_TIMER #define END_TIMER #define HAS_TIMER 0 #endif /* ** Used to prevent warnings about unused parameters */ #define UNUSED_PARAMETER(x) (void)(x) /* ** Number of elements in an array */ #define ArraySize(X) (int)(sizeof(X)/sizeof(X[0])) /* ** If the following flag is set, then command execution stops ** at an error if we are not interactive. */ static int bail_on_error = 0; /* ** Threat stdin as an interactive input if the following variable ** is true. Otherwise, assume stdin is connected to a file or pipe. */ static int stdin_is_interactive = 1; /* ** On Windows systems we have to know if standard output is a console ** in order to translate UTF-8 into MBCS. The following variable is ** true if translation is required. */ static int stdout_is_console = 1; /* ** The following is the open SQLite database. We make a pointer ** to this database a static variable so that it can be accessed ** by the SIGINT handler to interrupt database processing. */ static sqlite3 *globalDb = 0; /* ** True if an interrupt (Control-C) has been received. */ static volatile int seenInterrupt = 0; /* ** This is the name of our program. It is set in main(), used ** in a number of other places, mostly for error messages. */ static char *Argv0; /* ** Prompt strings. Initialized in main. Settable with ** .prompt main continue */ static char mainPrompt[20]; /* First line prompt. default: "sqlite> "*/ static char continuePrompt[20]; /* Continuation prompt. default: " ...> " */ /* ** Render output like fprintf(). Except, if the output is going to the ** console and if this is running on a Windows machine, translate the ** output from UTF-8 into MBCS. */ #if defined(_WIN32) || defined(WIN32) void utf8_printf(FILE *out, const char *zFormat, ...){ va_list ap; va_start(ap, zFormat); if( stdout_is_console && (out==stdout || out==stderr) ){ char *z1 = sqlite3_vmprintf(zFormat, ap); char *z2 = sqlite3_win32_utf8_to_mbcs_v2(z1, 0); sqlite3_free(z1); fputs(z2, out); sqlite3_free(z2); }else{ vfprintf(out, zFormat, ap); } va_end(ap); } #elif !defined(utf8_printf) # define utf8_printf fprintf #endif /* ** Render output like fprintf(). This should not be used on anything that ** includes string formatting (e.g. "%s"). */ #if !defined(raw_printf) # define raw_printf fprintf #endif /* Indicate out-of-memory and exit. */ static void shell_out_of_memory(void){ raw_printf(stderr,"Error: out of memory\n"); exit(1); } /* ** Write I/O traces to the following stream. */ #ifdef SQLITE_ENABLE_IOTRACE static FILE *iotrace = 0; #endif /* ** This routine works like printf in that its first argument is a ** format string and subsequent arguments are values to be substituted ** in place of % fields. The result of formatting this string ** is written to iotrace. */ #ifdef SQLITE_ENABLE_IOTRACE static void SQLITE_CDECL iotracePrintf(const char *zFormat, ...){ va_list ap; char *z; if( iotrace==0 ) return; va_start(ap, zFormat); z = sqlite3_vmprintf(zFormat, ap); va_end(ap); utf8_printf(iotrace, "%s", z); sqlite3_free(z); } #endif /* ** Output string zUtf to stream pOut as w characters. If w is negative, ** then right-justify the text. W is the width in UTF-8 characters, not ** in bytes. This is different from the %*.*s specification in printf ** since with %*.*s the width is measured in bytes, not characters. */ static void utf8_width_print(FILE *pOut, int w, const char *zUtf){ int i; int n; int aw = w<0 ? -w : w; char zBuf[1000]; if( aw>(int)sizeof(zBuf)/3 ) aw = (int)sizeof(zBuf)/3; for(i=n=0; zUtf[i]; i++){ if( (zUtf[i]&0xc0)!=0x80 ){ n++; if( n==aw ){ do{ i++; }while( (zUtf[i]&0xc0)==0x80 ); break; } } } if( n>=aw ){ utf8_printf(pOut, "%.*s", i, zUtf); }else if( w<0 ){ utf8_printf(pOut, "%*s%s", aw-n, "", zUtf); }else{ utf8_printf(pOut, "%s%*s", zUtf, aw-n, ""); } } /* ** Determines if a string is a number of not. */ static int isNumber(const char *z, int *realnum){ if( *z=='-' || *z=='+' ) z++; if( !IsDigit(*z) ){ return 0; } z++; if( realnum ) *realnum = 0; while( IsDigit(*z) ){ z++; } if( *z=='.' ){ z++; if( !IsDigit(*z) ) return 0; while( IsDigit(*z) ){ z++; } if( realnum ) *realnum = 1; } if( *z=='e' || *z=='E' ){ z++; if( *z=='+' || *z=='-' ) z++; if( !IsDigit(*z) ) return 0; while( IsDigit(*z) ){ z++; } if( realnum ) *realnum = 1; } return *z==0; } /* ** Compute a string length that is limited to what can be stored in ** lower 30 bits of a 32-bit signed integer. */ static int strlen30(const char *z){ const char *z2 = z; while( *z2 ){ z2++; } return 0x3fffffff & (int)(z2 - z); } /* ** Return the length of a string in characters. Multibyte UTF8 characters ** count as a single character. */ static int strlenChar(const char *z){ int n = 0; while( *z ){ if( (0xc0&*(z++))!=0x80 ) n++; } return n; } /* ** This routine reads a line of text from FILE in, stores ** the text in memory obtained from malloc() and returns a pointer ** to the text. NULL is returned at end of file, or if malloc() ** fails. ** ** If zLine is not NULL then it is a malloced buffer returned from ** a previous call to this routine that may be reused. */ static char *local_getline(char *zLine, FILE *in){ int nLine = zLine==0 ? 0 : 100; int n = 0; while( 1 ){ if( n+100>nLine ){ nLine = nLine*2 + 100; zLine = realloc(zLine, nLine); if( zLine==0 ) shell_out_of_memory(); } if( fgets(&zLine[n], nLine - n, in)==0 ){ if( n==0 ){ free(zLine); return 0; } zLine[n] = 0; break; } while( zLine[n] ) n++; if( n>0 && zLine[n-1]=='\n' ){ n--; if( n>0 && zLine[n-1]=='\r' ) n--; zLine[n] = 0; break; } } #if defined(_WIN32) || defined(WIN32) /* For interactive input on Windows systems, translate the ** multi-byte characterset characters into UTF-8. */ if( stdin_is_interactive && in==stdin ){ char *zTrans = sqlite3_win32_mbcs_to_utf8_v2(zLine, 0); if( zTrans ){ int nTrans = strlen30(zTrans)+1; if( nTrans>nLine ){ zLine = realloc(zLine, nTrans); if( zLine==0 ) shell_out_of_memory(); } memcpy(zLine, zTrans, nTrans); sqlite3_free(zTrans); } } #endif /* defined(_WIN32) || defined(WIN32) */ return zLine; } /* ** Retrieve a single line of input text. ** ** If in==0 then read from standard input and prompt before each line. ** If isContinuation is true, then a continuation prompt is appropriate. ** If isContinuation is zero, then the main prompt should be used. ** ** If zPrior is not NULL then it is a buffer from a prior call to this ** routine that can be reused. ** ** The result is stored in space obtained from malloc() and must either ** be freed by the caller or else passed back into this routine via the ** zPrior argument for reuse. */ static char *one_input_line(FILE *in, char *zPrior, int isContinuation){ char *zPrompt; char *zResult; if( in!=0 ){ zResult = local_getline(zPrior, in); }else{ zPrompt = isContinuation ? continuePrompt : mainPrompt; #if SHELL_USE_LOCAL_GETLINE printf("%s", zPrompt); fflush(stdout); zResult = local_getline(zPrior, stdin); #else free(zPrior); zResult = shell_readline(zPrompt); /* BEGIN SQLCIPHER */ #ifdef SQLITE_HAS_CODEC /* Simplistic filtering of input lines to prevent PRAGKA key and PRAGMA rekey statements from being stored in readline history. Note that this will only prevent single line statements, but that will be sufficient for common cases. */ if(zResult && *zResult && ( sqlite3_strlike("%pragma%key%=%", zResult, 0)==0 || sqlite3_strlike("%attach%database%as%key%", zResult, 0)==0 ) ) return zResult; #endif /* END SQLCIPHER */ if( zResult && *zResult ) shell_add_history(zResult); #endif } return zResult; } /* ** Return the value of a hexadecimal digit. Return -1 if the input ** is not a hex digit. */ static int hexDigitValue(char c){ if( c>='0' && c<='9' ) return c - '0'; if( c>='a' && c<='f' ) return c - 'a' + 10; if( c>='A' && c<='F' ) return c - 'A' + 10; return -1; } /* ** Interpret zArg as an integer value, possibly with suffixes. */ static sqlite3_int64 integerValue(const char *zArg){ sqlite3_int64 v = 0; static const struct { char *zSuffix; int iMult; } aMult[] = { { "KiB", 1024 }, { "MiB", 1024*1024 }, { "GiB", 1024*1024*1024 }, { "KB", 1000 }, { "MB", 1000000 }, { "GB", 1000000000 }, { "K", 1000 }, { "M", 1000000 }, { "G", 1000000000 }, }; int i; int isNeg = 0; if( zArg[0]=='-' ){ isNeg = 1; zArg++; }else if( zArg[0]=='+' ){ zArg++; } if( zArg[0]=='0' && zArg[1]=='x' ){ int x; zArg += 2; while( (x = hexDigitValue(zArg[0]))>=0 ){ v = (v<<4) + x; zArg++; } }else{ while( IsDigit(zArg[0]) ){ v = v*10 + zArg[0] - '0'; zArg++; } } for(i=0; i<ArraySize(aMult); i++){ if( sqlite3_stricmp(aMult[i].zSuffix, zArg)==0 ){ v *= aMult[i].iMult; break; } } return isNeg? -v : v; } /* ** A variable length string to which one can append text. */ typedef struct ShellText ShellText; struct ShellText { char *z; int n; int nAlloc; }; /* ** Initialize and destroy a ShellText object */ static void initText(ShellText *p){ memset(p, 0, sizeof(*p)); } static void freeText(ShellText *p){ free(p->z); initText(p); } /* zIn is either a pointer to a NULL-terminated string in memory obtained ** from malloc(), or a NULL pointer. The string pointed to by zAppend is ** added to zIn, and the result returned in memory obtained from malloc(). ** zIn, if it was not NULL, is freed. ** ** If the third argument, quote, is not '\0', then it is used as a ** quote character for zAppend. */ static void appendText(ShellText *p, char const *zAppend, char quote){ int len; int i; int nAppend = strlen30(zAppend); len = nAppend+p->n+1; if( quote ){ len += 2; for(i=0; i<nAppend; i++){ if( zAppend[i]==quote ) len++; } } if( p->n+len>=p->nAlloc ){ p->nAlloc = p->nAlloc*2 + len + 20; p->z = realloc(p->z, p->nAlloc); if( p->z==0 ) shell_out_of_memory(); } if( quote ){ char *zCsr = p->z+p->n; *zCsr++ = quote; for(i=0; i<nAppend; i++){ *zCsr++ = zAppend[i]; if( zAppend[i]==quote ) *zCsr++ = quote; } *zCsr++ = quote; p->n = (int)(zCsr - p->z); *zCsr = '\0'; }else{ memcpy(p->z+p->n, zAppend, nAppend); p->n += nAppend; p->z[p->n] = '\0'; } } /* ** Attempt to determine if identifier zName needs to be quoted, either ** because it contains non-alphanumeric characters, or because it is an ** SQLite keyword. Be conservative in this estimate: When in doubt assume ** that quoting is required. ** ** Return '"' if quoting is required. Return 0 if no quoting is required. */ static char quoteChar(const char *zName){ int i; if( !isalpha((unsigned char)zName[0]) && zName[0]!='_' ) return '"'; for(i=0; zName[i]; i++){ if( !isalnum((unsigned char)zName[i]) && zName[i]!='_' ) return '"'; } return sqlite3_keyword_check(zName, i) ? '"' : 0; } /* ** Construct a fake object name and column list to describe the structure ** of the view, virtual table, or table valued function zSchema.zName. */ static char *shellFakeSchema( sqlite3 *db, /* The database connection containing the vtab */ const char *zSchema, /* Schema of the database holding the vtab */ const char *zName /* The name of the virtual table */ ){ sqlite3_stmt *pStmt = 0; char *zSql; ShellText s; char cQuote; char *zDiv = "("; int nRow = 0; zSql = sqlite3_mprintf("PRAGMA \"%w\".table_info=%Q;", zSchema ? zSchema : "main", zName); sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); sqlite3_free(zSql); initText(&s); if( zSchema ){ cQuote = quoteChar(zSchema); if( cQuote && sqlite3_stricmp(zSchema,"temp")==0 ) cQuote = 0; appendText(&s, zSchema, cQuote); appendText(&s, ".", 0); } cQuote = quoteChar(zName); appendText(&s, zName, cQuote); while( sqlite3_step(pStmt)==SQLITE_ROW ){ const char *zCol = (const char*)sqlite3_column_text(pStmt, 1); nRow++; appendText(&s, zDiv, 0); zDiv = ","; cQuote = quoteChar(zCol); appendText(&s, zCol, cQuote); } appendText(&s, ")", 0); sqlite3_finalize(pStmt); if( nRow==0 ){ freeText(&s); s.z = 0; } return s.z; } /* ** SQL function: shell_module_schema(X) ** ** Return a fake schema for the table-valued function or eponymous virtual ** table X. */ static void shellModuleSchema( sqlite3_context *pCtx, int nVal, sqlite3_value **apVal ){ const char *zName = (const char*)sqlite3_value_text(apVal[0]); char *zFake = shellFakeSchema(sqlite3_context_db_handle(pCtx), 0, zName); UNUSED_PARAMETER(nVal); if( zFake ){ sqlite3_result_text(pCtx, sqlite3_mprintf("/* %s */", zFake), -1, sqlite3_free); free(zFake); } } /* ** SQL function: shell_add_schema(S,X) ** ** Add the schema name X to the CREATE statement in S and return the result. ** Examples: ** ** CREATE TABLE t1(x) -> CREATE TABLE xyz.t1(x); ** ** Also works on ** ** CREATE INDEX ** CREATE UNIQUE INDEX ** CREATE VIEW ** CREATE TRIGGER ** CREATE VIRTUAL TABLE ** ** This UDF is used by the .schema command to insert the schema name of ** attached databases into the middle of the sqlite_master.sql field. */ static void shellAddSchemaName( sqlite3_context *pCtx, int nVal, sqlite3_value **apVal ){ static const char *aPrefix[] = { "TABLE", "INDEX", "UNIQUE INDEX", "VIEW", "TRIGGER", "VIRTUAL TABLE" }; int i = 0; const char *zIn = (const char*)sqlite3_value_text(apVal[0]); const char *zSchema = (const char*)sqlite3_value_text(apVal[1]); const char *zName = (const char*)sqlite3_value_text(apVal[2]); sqlite3 *db = sqlite3_context_db_handle(pCtx); UNUSED_PARAMETER(nVal); if( zIn!=0 && strncmp(zIn, "CREATE ", 7)==0 ){ for(i=0; i<(int)(sizeof(aPrefix)/sizeof(aPrefix[0])); i++){ int n = strlen30(aPrefix[i]); if( strncmp(zIn+7, aPrefix[i], n)==0 && zIn[n+7]==' ' ){ char *z = 0; char *zFake = 0; if( zSchema ){ char cQuote = quoteChar(zSchema); if( cQuote && sqlite3_stricmp(zSchema,"temp")!=0 ){ z = sqlite3_mprintf("%.*s \"%w\".%s", n+7, zIn, zSchema, zIn+n+8); }else{ z = sqlite3_mprintf("%.*s %s.%s", n+7, zIn, zSchema, zIn+n+8); } } if( zName && aPrefix[i][0]=='V' && (zFake = shellFakeSchema(db, zSchema, zName))!=0 ){ if( z==0 ){ z = sqlite3_mprintf("%s\n/* %s */", zIn, zFake); }else{ z = sqlite3_mprintf("%z\n/* %s */", z, zFake); } free(zFake); } if( z ){ sqlite3_result_text(pCtx, z, -1, sqlite3_free); return; } } } } sqlite3_result_value(pCtx, apVal[0]); } /* ** The source code for several run-time loadable extensions is inserted ** below by the ../tool/mkshellc.tcl script. Before processing that included ** code, we need to override some macros to make the included program code ** work here in the middle of this regular program. */ #define SQLITE_EXTENSION_INIT1 #define SQLITE_EXTENSION_INIT2(X) (void)(X) #if defined(_WIN32) && defined(_MSC_VER) INCLUDE test_windirent.h INCLUDE test_windirent.c #define dirent DIRENT #endif INCLUDE ../ext/misc/shathree.c INCLUDE ../ext/misc/fileio.c INCLUDE ../ext/misc/completion.c INCLUDE ../ext/misc/appendvfs.c INCLUDE ../ext/misc/memtrace.c #ifdef SQLITE_HAVE_ZLIB INCLUDE ../ext/misc/zipfile.c INCLUDE ../ext/misc/sqlar.c #endif INCLUDE ../ext/expert/sqlite3expert.h INCLUDE ../ext/expert/sqlite3expert.c #if !defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_ENABLE_DBPAGE_VTAB) INCLUDE ../ext/misc/dbdata.c #endif #if defined(SQLITE_ENABLE_SESSION) /* ** State information for a single open session */ typedef struct OpenSession OpenSession; struct OpenSession { char *zName; /* Symbolic name for this session */ int nFilter; /* Number of xFilter rejection GLOB patterns */ char **azFilter; /* Array of xFilter rejection GLOB patterns */ sqlite3_session *p; /* The open session */ }; #endif /* ** Shell output mode information from before ".explain on", ** saved so that it can be restored by ".explain off" */ typedef struct SavedModeInfo SavedModeInfo; struct SavedModeInfo { int valid; /* Is there legit data in here? */ int mode; /* Mode prior to ".explain on" */ int showHeader; /* The ".header" setting prior to ".explain on" */ int colWidth[100]; /* Column widths prior to ".explain on" */ }; typedef struct ExpertInfo ExpertInfo; struct ExpertInfo { sqlite3expert *pExpert; int bVerbose; }; /* A single line in the EQP output */ typedef struct EQPGraphRow EQPGraphRow; |
| You are visitor 01402520 — GeezerVison does not store the pages you look up. Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required. |