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| (Empty) |
| 1 /* | |
| 2 ** A utility program to translate SQLite varints into decimal and decimal | |
| 3 ** integers into varints. | |
| 4 */ | |
| 5 #include <stdio.h> | |
| 6 #include <string.h> | |
| 7 #include <stdlib.h> | |
| 8 | |
| 9 #if defined(_MSC_VER) || defined(__BORLANDC__) | |
| 10 typedef __int64 i64; | |
| 11 typedef unsigned __int64 u64; | |
| 12 #else | |
| 13 typedef long long int i64; | |
| 14 typedef unsigned long long int u64; | |
| 15 #endif | |
| 16 | |
| 17 static int hexValue(char c){ | |
| 18 if( c>='0' && c<='9' ) return c - '0'; | |
| 19 if( c>='a' && c<='f' ) return c - 'a' + 10; | |
| 20 if( c>='A' && c<='F' ) return c - 'A' + 10; | |
| 21 return -1; | |
| 22 } | |
| 23 | |
| 24 static char toHex(unsigned char c){ | |
| 25 return "0123456789abcdef"[c&0xf]; | |
| 26 } | |
| 27 | |
| 28 static int putVarint(unsigned char *p, u64 v){ | |
| 29 int i, j, n; | |
| 30 unsigned char buf[10]; | |
| 31 if( v & (((u64)0xff000000)<<32) ){ | |
| 32 p[8] = (unsigned char)v; | |
| 33 v >>= 8; | |
| 34 for(i=7; i>=0; i--){ | |
| 35 p[i] = (unsigned char)((v & 0x7f) | 0x80); | |
| 36 v >>= 7; | |
| 37 } | |
| 38 return 9; | |
| 39 } | |
| 40 n = 0; | |
| 41 do{ | |
| 42 buf[n++] = (unsigned char)((v & 0x7f) | 0x80); | |
| 43 v >>= 7; | |
| 44 }while( v!=0 ); | |
| 45 buf[0] &= 0x7f; | |
| 46 for(i=0, j=n-1; j>=0; j--, i++){ | |
| 47 p[i] = buf[j]; | |
| 48 } | |
| 49 return n; | |
| 50 } | |
| 51 | |
| 52 | |
| 53 int main(int argc, char **argv){ | |
| 54 int i; | |
| 55 u64 x; | |
| 56 u64 uX = 0; | |
| 57 i64 iX; | |
| 58 int n; | |
| 59 unsigned char zHex[20]; | |
| 60 | |
| 61 if( argc==1 ){ | |
| 62 fprintf(stderr, | |
| 63 "Usage:\n" | |
| 64 " %s HH HH HH ... Convert varint to decimal\n" | |
| 65 " %s DDDDD Convert decimal to varint\n" | |
| 66 " Add '+' or '-' before DDDDD to disambiguate.\n", | |
| 67 argv[0], argv[0]); | |
| 68 exit(1); | |
| 69 } | |
| 70 if( argc>2 | |
| 71 || (strlen(argv[1])==2 && hexValue(argv[1][0])>=0 && hexValue(argv[1][1])>=0) | |
| 72 ){ | |
| 73 /* Hex to decimal */ | |
| 74 for(i=1; i<argc && i<9; i++){ | |
| 75 if( strlen(argv[i])!=2 ){ | |
| 76 fprintf(stderr, "Not a hex byte: %s\n", argv[i]); | |
| 77 exit(1); | |
| 78 } | |
| 79 x = (hexValue(argv[i][0])<<4) + hexValue(argv[i][1]); | |
| 80 uX = (uX<<7) + (x&0x7f); | |
| 81 if( (x&0x80)==0 ) break; | |
| 82 } | |
| 83 if( i==9 && i<argc ){ | |
| 84 if( strlen(argv[i])!=2 ){ | |
| 85 fprintf(stderr, "Not a hex byte: %s\n", argv[i]); | |
| 86 exit(1); | |
| 87 } | |
| 88 x = (hexValue(argv[i][0])<<4) + hexValue(argv[i][1]); | |
| 89 uX = (uX<<8) + x; | |
| 90 } | |
| 91 i++; | |
| 92 if( i<argc ){ | |
| 93 fprintf(stderr, "Extra arguments: %s...\n", argv[i]); | |
| 94 exit(1); | |
| 95 } | |
| 96 }else{ | |
| 97 char *z = argv[1]; | |
| 98 int sign = 1; | |
| 99 if( z[0]=='+' ) z++; | |
| 100 else if( z[0]=='-' ){ z++; sign = -1; } | |
| 101 uX = 0; | |
| 102 while( z[0] ){ | |
| 103 if( z[0]<'0' || z[0]>'9' ){ | |
| 104 fprintf(stderr, "Not a decimal number: %s", argv[1]); | |
| 105 exit(1); | |
| 106 } | |
| 107 uX = uX*10 + z[0] - '0'; | |
| 108 z++; | |
| 109 } | |
| 110 if( sign<0 ){ | |
| 111 memcpy(&iX, &uX, 8); | |
| 112 iX = -iX; | |
| 113 memcpy(&uX, &iX, 8); | |
| 114 } | |
| 115 } | |
| 116 n = putVarint(zHex, uX); | |
| 117 printf("%lld =", (i64)uX); | |
| 118 for(i=0; i<n; i++){ | |
| 119 printf(" %c%c", toHex(zHex[i]>>4), toHex(zHex[i]&0x0f)); | |
| 120 } | |
| 121 printf("\n"); | |
| 122 return 0; | |
| 123 } | |
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Chromium Code Reviews
Issue 2846743003:
[sql] Remove SQLite 3.10.2 reference directory. (Closed)
