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authorsamelian <samelian@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2011-05-22 20:12:04 +0000
committersamelian <samelian@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2011-05-22 20:12:04 +0000
commitac87680632b4fb6582d1391b042eff7f0305c0a2 (patch)
treebfeee57d104a1bbc7c387d35190fa55d692115b7 /kopete/plugins/statistics/sqlite/util.c
parentaca844682f86c04f6b67b23de2a820fb0c63a32e (diff)
downloadtdenetwork-ac87680632b4fb6582d1391b042eff7f0305c0a2.tar.gz
tdenetwork-ac87680632b4fb6582d1391b042eff7f0305c0a2.zip
[kdenetwork/kopete] added cmake support
git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdenetwork@1233119 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'kopete/plugins/statistics/sqlite/util.c')
-rw-r--r--kopete/plugins/statistics/sqlite/util.c962
1 files changed, 0 insertions, 962 deletions
diff --git a/kopete/plugins/statistics/sqlite/util.c b/kopete/plugins/statistics/sqlite/util.c
deleted file mode 100644
index 74ec8979..00000000
--- a/kopete/plugins/statistics/sqlite/util.c
+++ /dev/null
@@ -1,962 +0,0 @@
-/*
-** 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.
-**
-*************************************************************************
-** Utility functions used throughout sqlite.
-**
-** This file contains functions for allocating memory, comparing
-** strings, and stuff like that.
-**
-** $Id$
-*/
-#include "sqliteInt.h"
-#include <stdarg.h>
-#include <ctype.h>
-
-#if SQLITE_DEBUG>2 && defined(__GLIBC__)
-#include <execinfo.h>
-void print_stack_trace(){
- void *bt[30];
- int i;
- int n = backtrace(bt, 30);
-
- sqlite3DebugPrintf("STACK: ");
- for(i=0; i<n;i++){
- sqlite3DebugPrintf("%p ", bt[i]);
- }
- sqlite3DebugPrintf("\n");
-}
-#else
-#define print_stack_trace()
-#endif
-
-/*
-** If malloc() ever fails, this global variable gets set to 1.
-** This causes the library to abort and never again function.
-*/
-int sqlite3_malloc_failed = 0;
-
-/*
-** If SQLITE_DEBUG is defined, then use versions of malloc() and
-** free() that track memory usage and check for buffer overruns.
-*/
-#ifdef SQLITE_DEBUG
-
-/*
-** For keeping track of the number of mallocs and frees. This
-** is used to check for memory leaks.
-*/
-int sqlite3_nMalloc; /* Number of sqliteMalloc() calls */
-int sqlite3_nFree; /* Number of sqliteFree() calls */
-int sqlite3_iMallocFail; /* Fail sqliteMalloc() after this many calls */
-#if SQLITE_DEBUG>1
-static int memcnt = 0;
-#endif
-
-/*
-** Number of 32-bit guard words
-*/
-#define N_GUARD 1
-
-/*
-** Allocate new memory and set it to zero. Return NULL if
-** no memory is available.
-*/
-void *sqlite3Malloc_(int n, int bZero, char *zFile, int line){
- void *p;
- int *pi;
- int i, k;
- if( sqlite3_iMallocFail>=0 ){
- sqlite3_iMallocFail--;
- if( sqlite3_iMallocFail==0 ){
- sqlite3_malloc_failed++;
-#if SQLITE_DEBUG>1
- fprintf(stderr,"**** failed to allocate %d bytes at %s:%d\n",
- n, zFile,line);
-#endif
- sqlite3_iMallocFail--;
- return 0;
- }
- }
- if( n==0 ) return 0;
- k = (n+sizeof(int)-1)/sizeof(int);
- pi = malloc( (N_GUARD*2+1+k)*sizeof(int));
- if( pi==0 ){
- sqlite3_malloc_failed++;
- return 0;
- }
- sqlite3_nMalloc++;
- for(i=0; i<N_GUARD; i++) pi[i] = 0xdead1122;
- pi[N_GUARD] = n;
- for(i=0; i<N_GUARD; i++) pi[k+1+N_GUARD+i] = 0xdead3344;
- p = &pi[N_GUARD+1];
- memset(p, bZero==0, n);
-#if SQLITE_DEBUG>1
- print_stack_trace();
- fprintf(stderr,"%06d malloc %d bytes at 0x%x from %s:%d\n",
- ++memcnt, n, (int)p, zFile,line);
-#endif
- return p;
-}
-
-/*
-** Check to see if the given pointer was obtained from sqliteMalloc()
-** and is able to hold at least N bytes. Raise an exception if this
-** is not the case.
-**
-** This routine is used for testing purposes only.
-*/
-void sqlite3CheckMemory(void *p, int N){
- int *pi = p;
- int n, i, k;
- pi -= N_GUARD+1;
- for(i=0; i<N_GUARD; i++){
- assert( pi[i]==0xdead1122 );
- }
- n = pi[N_GUARD];
- assert( N>=0 && N<n );
- k = (n+sizeof(int)-1)/sizeof(int);
- for(i=0; i<N_GUARD; i++){
- assert( pi[k+N_GUARD+1+i]==0xdead3344 );
- }
-}
-
-/*
-** Free memory previously obtained from sqliteMalloc()
-*/
-void sqlite3Free_(void *p, char *zFile, int line){
- if( p ){
- int *pi, i, k, n;
- pi = p;
- pi -= N_GUARD+1;
- sqlite3_nFree++;
- for(i=0; i<N_GUARD; i++){
- if( pi[i]!=0xdead1122 ){
- fprintf(stderr,"Low-end memory corruption at 0x%x\n", (int)p);
- return;
- }
- }
- n = pi[N_GUARD];
- k = (n+sizeof(int)-1)/sizeof(int);
- for(i=0; i<N_GUARD; i++){
- if( pi[k+N_GUARD+1+i]!=0xdead3344 ){
- fprintf(stderr,"High-end memory corruption at 0x%x\n", (int)p);
- return;
- }
- }
- memset(pi, 0xff, (k+N_GUARD*2+1)*sizeof(int));
-#if SQLITE_DEBUG>1
- fprintf(stderr,"%06d free %d bytes at 0x%x from %s:%d\n",
- ++memcnt, n, (int)p, zFile,line);
-#endif
- free(pi);
- }
-}
-
-/*
-** Resize a prior allocation. If p==0, then this routine
-** works just like sqliteMalloc(). If n==0, then this routine
-** works just like sqliteFree().
-*/
-void *sqlite3Realloc_(void *oldP, int n, char *zFile, int line){
- int *oldPi, *pi, i, k, oldN, oldK;
- void *p;
- if( oldP==0 ){
- return sqlite3Malloc_(n,1,zFile,line);
- }
- if( n==0 ){
- sqlite3Free_(oldP,zFile,line);
- return 0;
- }
- oldPi = oldP;
- oldPi -= N_GUARD+1;
- if( oldPi[0]!=0xdead1122 ){
- fprintf(stderr,"Low-end memory corruption in realloc at 0x%x\n", (int)oldP);
- return 0;
- }
- oldN = oldPi[N_GUARD];
- oldK = (oldN+sizeof(int)-1)/sizeof(int);
- for(i=0; i<N_GUARD; i++){
- if( oldPi[oldK+N_GUARD+1+i]!=0xdead3344 ){
- fprintf(stderr,"High-end memory corruption in realloc at 0x%x\n",
- (int)oldP);
- return 0;
- }
- }
- k = (n + sizeof(int) - 1)/sizeof(int);
- pi = malloc( (k+N_GUARD*2+1)*sizeof(int) );
- if( pi==0 ){
- sqlite3_malloc_failed++;
- return 0;
- }
- for(i=0; i<N_GUARD; i++) pi[i] = 0xdead1122;
- pi[N_GUARD] = n;
- for(i=0; i<N_GUARD; i++) pi[k+N_GUARD+1+i] = 0xdead3344;
- p = &pi[N_GUARD+1];
- memcpy(p, oldP, n>oldN ? oldN : n);
- if( n>oldN ){
- memset(&((char*)p)[oldN], 0x55, n-oldN);
- }
- memset(oldPi, 0xab, (oldK+N_GUARD+2)*sizeof(int));
- free(oldPi);
-#if SQLITE_DEBUG>1
- print_stack_trace();
- fprintf(stderr,"%06d realloc %d to %d bytes at 0x%x to 0x%x at %s:%d\n",
- ++memcnt, oldN, n, (int)oldP, (int)p, zFile, line);
-#endif
- return p;
-}
-
-/*
-** Make a copy of a string in memory obtained from sqliteMalloc()
-*/
-char *sqlite3StrDup_(const char *z, char *zFile, int line){
- char *zNew;
- if( z==0 ) return 0;
- zNew = sqlite3Malloc_(strlen(z)+1, 0, zFile, line);
- if( zNew ) strcpy(zNew, z);
- return zNew;
-}
-char *sqlite3StrNDup_(const char *z, int n, char *zFile, int line){
- char *zNew;
- if( z==0 ) return 0;
- zNew = sqlite3Malloc_(n+1, 0, zFile, line);
- if( zNew ){
- memcpy(zNew, z, n);
- zNew[n] = 0;
- }
- return zNew;
-}
-
-/*
-** A version of sqliteFree that is always a function, not a macro.
-*/
-void sqlite3FreeX(void *p){
- sqliteFree(p);
-}
-#endif /* SQLITE_DEBUG */
-
-/*
-** The following versions of malloc() and free() are for use in a
-** normal build.
-*/
-#if !defined(SQLITE_DEBUG)
-
-/*
-** Allocate new memory and set it to zero. Return NULL if
-** no memory is available. See also sqliteMallocRaw().
-*/
-void *sqlite3Malloc(int n){
- void *p;
- if( (p = malloc(n))==0 ){
- if( n>0 ) sqlite3_malloc_failed++;
- }else{
- memset(p, 0, n);
- }
- return p;
-}
-
-/*
-** Allocate new memory but do not set it to zero. Return NULL if
-** no memory is available. See also sqliteMalloc().
-*/
-void *sqlite3MallocRaw(int n){
- void *p;
- if( (p = malloc(n))==0 ){
- if( n>0 ) sqlite3_malloc_failed++;
- }
- return p;
-}
-
-/*
-** Free memory previously obtained from sqliteMalloc()
-*/
-void sqlite3FreeX(void *p){
- if( p ){
- free(p);
- }
-}
-
-/*
-** Resize a prior allocation. If p==0, then this routine
-** works just like sqliteMalloc(). If n==0, then this routine
-** works just like sqliteFree().
-*/
-void *sqlite3Realloc(void *p, int n){
- void *p2;
- if( p==0 ){
- return sqliteMalloc(n);
- }
- if( n==0 ){
- sqliteFree(p);
- return 0;
- }
- p2 = realloc(p, n);
- if( p2==0 ){
- sqlite3_malloc_failed++;
- }
- return p2;
-}
-
-/*
-** Make a copy of a string in memory obtained from sqliteMalloc()
-*/
-char *sqlite3StrDup(const char *z){
- char *zNew;
- if( z==0 ) return 0;
- zNew = sqliteMallocRaw(strlen(z)+1);
- if( zNew ) strcpy(zNew, z);
- return zNew;
-}
-char *sqlite3StrNDup(const char *z, int n){
- char *zNew;
- if( z==0 ) return 0;
- zNew = sqliteMallocRaw(n+1);
- if( zNew ){
- memcpy(zNew, z, n);
- zNew[n] = 0;
- }
- return zNew;
-}
-#endif /* !defined(SQLITE_DEBUG) */
-
-/*
-** Create a string from the 2nd and subsequent arguments (up to the
-** first NULL argument), store the string in memory obtained from
-** sqliteMalloc() and make the pointer indicated by the 1st argument
-** point to that string. The 1st argument must either be NULL or
-** point to memory obtained from sqliteMalloc().
-*/
-void sqlite3SetString(char **pz, const char *zFirst, ...){
- va_list ap;
- int nByte;
- const char *z;
- char *zResult;
-
- if( pz==0 ) return;
- nByte = strlen(zFirst) + 1;
- va_start(ap, zFirst);
- while( (z = va_arg(ap, const char*))!=0 ){
- nByte += strlen(z);
- }
- va_end(ap);
- sqliteFree(*pz);
- *pz = zResult = sqliteMallocRaw( nByte );
- if( zResult==0 ){
- return;
- }
- strcpy(zResult, zFirst);
- zResult += strlen(zResult);
- va_start(ap, zFirst);
- while( (z = va_arg(ap, const char*))!=0 ){
- strcpy(zResult, z);
- zResult += strlen(zResult);
- }
- va_end(ap);
-#ifdef SQLITE_DEBUG
-#if SQLITE_DEBUG>1
- fprintf(stderr,"string at 0x%x is %s\n", (int)*pz, *pz);
-#endif
-#endif
-}
-
-/*
-** Set the most recent error code and error string for the sqlite
-** handle "db". The error code is set to "err_code".
-**
-** If it is not NULL, string zFormat specifies the format of the
-** error string in the style of the printf functions: The following
-** format characters are allowed:
-**
-** %s Insert a string
-** %z A string that should be freed after use
-** %d Insert an integer
-** %T Insert a token
-** %S Insert the first element of a SrcList
-**
-** zFormat and any string tokens that follow it are assumed to be
-** encoded in UTF-8.
-**
-** To clear the most recent error for slqite handle "db", sqlite3Error
-** should be called with err_code set to SQLITE_OK and zFormat set
-** to NULL.
-*/
-void sqlite3Error(sqlite3 *db, int err_code, const char *zFormat, ...){
- if( db && (db->pErr || (db->pErr = sqlite3ValueNew())) ){
- db->errCode = err_code;
- if( zFormat ){
- char *z;
- va_list ap;
- va_start(ap, zFormat);
- z = sqlite3VMPrintf(zFormat, ap);
- va_end(ap);
- sqlite3ValueSetStr(db->pErr, -1, z, SQLITE_UTF8, sqlite3FreeX);
- }else{
- sqlite3ValueSetStr(db->pErr, 0, 0, SQLITE_UTF8, SQLITE_STATIC);
- }
- }
-}
-
-/*
-** Add an error message to pParse->zErrMsg and increment pParse->nErr.
-** The following formatting characters are allowed:
-**
-** %s Insert a string
-** %z A string that should be freed after use
-** %d Insert an integer
-** %T Insert a token
-** %S Insert the first element of a SrcList
-**
-** This function should be used to report any error that occurs whilst
-** compiling an SQL statement (i.e. within sqlite3_prepare()). The
-** last thing the sqlite3_prepare() function does is copy the error
-** stored by this function into the database handle using sqlite3Error().
-** Function sqlite3Error() should be used during statement execution
-** (sqlite3_step() etc.).
-*/
-void sqlite3ErrorMsg(Parse *pParse, const char *zFormat, ...){
- va_list ap;
- pParse->nErr++;
- sqliteFree(pParse->zErrMsg);
- va_start(ap, zFormat);
- pParse->zErrMsg = sqlite3VMPrintf(zFormat, ap);
- va_end(ap);
-}
-
-/*
-** Convert an SQL-style quoted string into a normal string by removing
-** the quote characters. The conversion is done in-place. If the
-** input does not begin with a quote character, then this routine
-** is a no-op.
-**
-** 2002-Feb-14: This routine is extended to remove MS-Access style
-** brackets from around identifers. For example: "[a-b-c]" becomes
-** "a-b-c".
-*/
-void sqlite3Dequote(char *z){
- int quote;
- int i, j;
- if( z==0 ) return;
- quote = z[0];
- switch( quote ){
- case '\'': break;
- case '"': break;
- case '[': quote = ']'; break;
- default: return;
- }
- for(i=1, j=0; z[i]; i++){
- if( z[i]==quote ){
- if( z[i+1]==quote ){
- z[j++] = quote;
- i++;
- }else{
- z[j++] = 0;
- break;
- }
- }else{
- z[j++] = z[i];
- }
- }
-}
-
-/* An array to map all upper-case characters into their corresponding
-** lower-case character.
-*/
-const unsigned char sqlite3UpperToLower[] = {
- 0, 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, 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, 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
-};
-#define UpperToLower sqlite3UpperToLower
-
-/*
-** This function computes a hash on the name of a keyword.
-** Case is not significant.
-*/
-int sqlite3HashNoCase(const char *z, int n){
- int h = 0;
- if( n<=0 ) n = strlen(z);
- while( n > 0 ){
- h = (h<<3) ^ h ^ UpperToLower[(unsigned char)*z++];
- n--;
- }
- return h & 0x7fffffff;
-}
-
-/*
-** Some systems have stricmp(). Others have strcasecmp(). Because
-** there is no consistency, we will define our own.
-*/
-int sqlite3StrICmp(const char *zLeft, const char *zRight){
- register unsigned char *a, *b;
- a = (unsigned char *)zLeft;
- b = (unsigned char *)zRight;
- while( *a!=0 && UpperToLower[*a]==UpperToLower[*b]){ a++; b++; }
- return UpperToLower[*a] - UpperToLower[*b];
-}
-int sqlite3StrNICmp(const char *zLeft, const char *zRight, int N){
- register unsigned char *a, *b;
- a = (unsigned char *)zLeft;
- b = (unsigned char *)zRight;
- while( N-- > 0 && *a!=0 && UpperToLower[*a]==UpperToLower[*b]){ a++; b++; }
- return N<0 ? 0 : UpperToLower[*a] - UpperToLower[*b];
-}
-
-/*
-** Return TRUE if z is a pure numeric string. Return FALSE if the
-** string contains any character which is not part of a number. If
-** the string is numeric and contains the '.' character, set *realnum
-** to TRUE (otherwise FALSE).
-**
-** An empty string is considered non-numeric.
-*/
-int sqlite3IsNumber(const char *z, int *realnum, u8 enc){
- int incr = (enc==SQLITE_UTF8?1:2);
- if( enc==SQLITE_UTF16BE ) z++;
- if( *z=='-' || *z=='+' ) z += incr;
- if( !isdigit(*(u8*)z) ){
- return 0;
- }
- z += incr;
- if( realnum ) *realnum = 0;
- while( isdigit(*(u8*)z) ){ z += incr; }
- if( *z=='.' ){
- z += incr;
- if( !isdigit(*(u8*)z) ) return 0;
- while( isdigit(*(u8*)z) ){ z += incr; }
- if( realnum ) *realnum = 1;
- }
- if( *z=='e' || *z=='E' ){
- z += incr;
- if( *z=='+' || *z=='-' ) z += incr;
- if( !isdigit(*(u8*)z) ) return 0;
- while( isdigit(*(u8*)z) ){ z += incr; }
- if( realnum ) *realnum = 1;
- }
- return *z==0;
-}
-
-/*
-** The string z[] is an ascii representation of a real number.
-** Convert this string to a double.
-**
-** This routine assumes that z[] really is a valid number. If it
-** is not, the result is undefined.
-**
-** This routine is used instead of the library atof() function because
-** the library atof() might want to use "," as the decimal point instead
-** of "." depending on how locale is set. But that would cause problems
-** for SQL. So this routine always uses "." regardless of locale.
-*/
-double sqlite3AtoF(const char *z, const char **pzEnd){
- int sign = 1;
- LONGDOUBLE_TYPE v1 = 0.0;
- if( *z=='-' ){
- sign = -1;
- z++;
- }else if( *z=='+' ){
- z++;
- }
- while( isdigit(*(u8*)z) ){
- v1 = v1*10.0 + (*z - '0');
- z++;
- }
- if( *z=='.' ){
- LONGDOUBLE_TYPE divisor = 1.0;
- z++;
- while( isdigit(*(u8*)z) ){
- v1 = v1*10.0 + (*z - '0');
- divisor *= 10.0;
- z++;
- }
- v1 /= divisor;
- }
- if( *z=='e' || *z=='E' ){
- int esign = 1;
- int eval = 0;
- LONGDOUBLE_TYPE scale = 1.0;
- z++;
- if( *z=='-' ){
- esign = -1;
- z++;
- }else if( *z=='+' ){
- z++;
- }
- while( isdigit(*(u8*)z) ){
- eval = eval*10 + *z - '0';
- z++;
- }
- while( eval>=64 ){ scale *= 1.0e+64; eval -= 64; }
- while( eval>=16 ){ scale *= 1.0e+16; eval -= 16; }
- while( eval>=4 ){ scale *= 1.0e+4; eval -= 4; }
- while( eval>=1 ){ scale *= 1.0e+1; eval -= 1; }
- if( esign<0 ){
- v1 /= scale;
- }else{
- v1 *= scale;
- }
- }
- if( pzEnd ) *pzEnd = z;
- return sign<0 ? -v1 : v1;
-}
-
-/*
-** Return TRUE if zNum is a 64-bit signed integer and write
-** the value of the integer into *pNum. If zNum is not an integer
-** or is an integer that is too large to be expressed with 64 bits,
-** then return false. If n>0 and the integer is string is not
-** exactly n bytes long, return false.
-**
-** When this routine was originally written it dealt with only
-** 32-bit numbers. At that time, it was much faster than the
-** atoi() library routine in RedHat 7.2.
-*/
-int sqlite3atoi64(const char *zNum, i64 *pNum){
- i64 v = 0;
- int neg;
- int i, c;
- if( *zNum=='-' ){
- neg = 1;
- zNum++;
- }else if( *zNum=='+' ){
- neg = 0;
- zNum++;
- }else{
- neg = 0;
- }
- for(i=0; (c=zNum[i])>='0' && c<='9'; i++){
- v = v*10 + c - '0';
- }
- *pNum = neg ? -v : v;
- return c==0 && i>0 &&
- (i<19 || (i==19 && memcmp(zNum,"9223372036854775807",19)<=0));
-}
-
-/*
-** The string zNum represents an integer. There might be some other
-** information following the integer too, but that part is ignored.
-** If the integer that the prefix of zNum represents will fit in a
-** 32-bit signed integer, return TRUE. Otherwise return FALSE.
-**
-** This routine returns FALSE for the string -2147483648 even that
-** that number will in fact fit in a 32-bit integer. But positive
-** 2147483648 will not fit in 32 bits. So it seems safer to return
-** false.
-*/
-static int sqlite3FitsIn32Bits(const char *zNum){
- int i, c;
- if( *zNum=='-' || *zNum=='+' ) zNum++;
- for(i=0; (c=zNum[i])>='0' && c<='9'; i++){}
- return i<10 || (i==10 && memcmp(zNum,"2147483647",10)<=0);
-}
-
-/*
-** If zNum represents an integer that will fit in 32-bits, then set
-** *pValue to that integer and return true. Otherwise return false.
-*/
-int sqlite3GetInt32(const char *zNum, int *pValue){
- if( sqlite3FitsIn32Bits(zNum) ){
- *pValue = atoi(zNum);
- return 1;
- }
- return 0;
-}
-
-/*
-** The string zNum represents an integer. There might be some other
-** information following the integer too, but that part is ignored.
-** If the integer that the prefix of zNum represents will fit in a
-** 64-bit signed integer, return TRUE. Otherwise return FALSE.
-**
-** This routine returns FALSE for the string -9223372036854775808 even that
-** that number will, in theory fit in a 64-bit integer. Positive
-** 9223373036854775808 will not fit in 64 bits. So it seems safer to return
-** false.
-*/
-int sqlite3FitsIn64Bits(const char *zNum){
- int i, c;
- if( *zNum=='-' || *zNum=='+' ) zNum++;
- for(i=0; (c=zNum[i])>='0' && c<='9'; i++){}
- return i<19 || (i==19 && memcmp(zNum,"9223372036854775807",19)<=0);
-}
-
-
-/*
-** Change the sqlite.magic from SQLITE_MAGIC_OPEN to SQLITE_MAGIC_BUSY.
-** Return an error (non-zero) if the magic was not SQLITE_MAGIC_OPEN
-** when this routine is called.
-**
-** This routine is a attempt to detect if two threads use the
-** same sqlite* pointer at the same time. There is a race
-** condition so it is possible that the error is not detected.
-** But usually the problem will be seen. The result will be an
-** error which can be used to debug the application that is
-** using SQLite incorrectly.
-**
-** Ticket #202: If db->magic is not a valid open value, take care not
-** to modify the db structure at all. It could be that db is a stale
-** pointer. In other words, it could be that there has been a prior
-** call to sqlite3_close(db) and db has been deallocated. And we do
-** not want to write into deallocated memory.
-*/
-int sqlite3SafetyOn(sqlite3 *db){
- if( db->magic==SQLITE_MAGIC_OPEN ){
- db->magic = SQLITE_MAGIC_BUSY;
- return 0;
- }else if( db->magic==SQLITE_MAGIC_BUSY || db->magic==SQLITE_MAGIC_ERROR ){
- db->magic = SQLITE_MAGIC_ERROR;
- db->flags |= SQLITE_Interrupt;
- }
- return 1;
-}
-
-/*
-** Change the magic from SQLITE_MAGIC_BUSY to SQLITE_MAGIC_OPEN.
-** Return an error (non-zero) if the magic was not SQLITE_MAGIC_BUSY
-** when this routine is called.
-*/
-int sqlite3SafetyOff(sqlite3 *db){
- if( db->magic==SQLITE_MAGIC_BUSY ){
- db->magic = SQLITE_MAGIC_OPEN;
- return 0;
- }else if( db->magic==SQLITE_MAGIC_OPEN || db->magic==SQLITE_MAGIC_ERROR ){
- db->magic = SQLITE_MAGIC_ERROR;
- db->flags |= SQLITE_Interrupt;
- }
- return 1;
-}
-
-/*
-** Check to make sure we have a valid db pointer. This test is not
-** foolproof but it does provide some measure of protection against
-** misuse of the interface such as passing in db pointers that are
-** NULL or which have been previously closed. If this routine returns
-** TRUE it means that the db pointer is invalid and should not be
-** dereferenced for any reason. The calling function should invoke
-** SQLITE_MISUSE immediately.
-*/
-int sqlite3SafetyCheck(sqlite3 *db){
- int magic;
- if( db==0 ) return 1;
- magic = db->magic;
- if( magic!=SQLITE_MAGIC_CLOSED &&
- magic!=SQLITE_MAGIC_OPEN &&
- magic!=SQLITE_MAGIC_BUSY ) return 1;
- return 0;
-}
-
-/*
-** The variable-length integer encoding is as follows:
-**
-** KEY:
-** A = 0xxxxxxx 7 bits of data and one flag bit
-** B = 1xxxxxxx 7 bits of data and one flag bit
-** C = xxxxxxxx 8 bits of data
-**
-** 7 bits - A
-** 14 bits - BA
-** 21 bits - BBA
-** 28 bits - BBBA
-** 35 bits - BBBBA
-** 42 bits - BBBBBA
-** 49 bits - BBBBBBA
-** 56 bits - BBBBBBBA
-** 64 bits - BBBBBBBBC
-*/
-
-/*
-** Write a 64-bit variable-length integer to memory starting at p[0].
-** The length of data write will be between 1 and 9 bytes. The number
-** of bytes written is returned.
-**
-** A variable-length integer consists of the lower 7 bits of each byte
-** for all bytes that have the 8th bit set and one byte with the 8th
-** bit clear. Except, if we get to the 9th byte, it stores the full
-** 8 bits and is the last byte.
-*/
-int sqlite3PutVarint(unsigned char *p, u64 v){
- int i, j, n;
- u8 buf[10];
- if( v & 0xff00000000000000 ){
- p[8] = v;
- v >>= 8;
- for(i=7; i>=0; i--){
- p[i] = (v & 0x7f) | 0x80;
- v >>= 7;
- }
- return 9;
- }
- n = 0;
- do{
- buf[n++] = (v & 0x7f) | 0x80;
- v >>= 7;
- }while( v!=0 );
- buf[0] &= 0x7f;
- assert( n<=9 );
- for(i=0, j=n-1; j>=0; j--, i++){
- p[i] = buf[j];
- }
- return n;
-}
-
-/*
-** Read a 64-bit variable-length integer from memory starting at p[0].
-** Return the number of bytes read. The value is stored in *v.
-*/
-int sqlite3GetVarint(const unsigned char *p, u64 *v){
- u32 x;
- u64 x64;
- int n;
- unsigned char c;
- if( ((c = p[0]) & 0x80)==0 ){
- *v = c;
- return 1;
- }
- x = c & 0x7f;
- if( ((c = p[1]) & 0x80)==0 ){
- *v = (x<<7) | c;
- return 2;
- }
- x = (x<<7) | (c&0x7f);
- if( ((c = p[2]) & 0x80)==0 ){
- *v = (x<<7) | c;
- return 3;
- }
- x = (x<<7) | (c&0x7f);
- if( ((c = p[3]) & 0x80)==0 ){
- *v = (x<<7) | c;
- return 4;
- }
- x64 = (x<<7) | (c&0x7f);
- n = 4;
- do{
- c = p[n++];
- if( n==9 ){
- x64 = (x64<<8) | c;
- break;
- }
- x64 = (x64<<7) | (c&0x7f);
- }while( (c & 0x80)!=0 );
- *v = x64;
- return n;
-}
-
-/*
-** Read a 32-bit variable-length integer from memory starting at p[0].
-** Return the number of bytes read. The value is stored in *v.
-*/
-int sqlite3GetVarint32(const unsigned char *p, u32 *v){
- u32 x;
- int n;
- unsigned char c;
- if( ((c = p[0]) & 0x80)==0 ){
- *v = c;
- return 1;
- }
- x = c & 0x7f;
- if( ((c = p[1]) & 0x80)==0 ){
- *v = (x<<7) | c;
- return 2;
- }
- x = (x<<7) | (c & 0x7f);
- n = 2;
- do{
- x = (x<<7) | ((c = p[n++])&0x7f);
- }while( (c & 0x80)!=0 && n<9 );
- *v = x;
- return n;
-}
-
-/*
-** Return the number of bytes that will be needed to store the given
-** 64-bit integer.
-*/
-int sqlite3VarintLen(u64 v){
- int i = 0;
- do{
- i++;
- v >>= 7;
- }while( v!=0 && i<9 );
- return i;
-}
-
-/*
-** Translate a single byte of Hex into an integer.
-*/
-static int hexToInt(int h){
- if( h>='0' && h<='9' ){
- return h - '0';
- }else if( h>='a' && h<='f' ){
- return h - 'a' + 10;
- }else if( h>='A' && h<='F' ){
- return h - 'A' + 10;
- }else{
- return 0;
- }
-}
-
-/*
-** Convert a BLOB literal of the form "x'hhhhhh'" into its binary
-** value. Return a pointer to its binary value. Space to hold the
-** binary value has been obtained from malloc and must be freed by
-** the calling routine.
-*/
-void *sqlite3HexToBlob(const char *z){
- char *zBlob;
- int i;
- int n = strlen(z);
- if( n%2 ) return 0;
-
- zBlob = (char *)sqliteMalloc(n/2);
- for(i=0; i<n; i+=2){
- zBlob[i/2] = (hexToInt(z[i])<<4) | hexToInt(z[i+1]);
- }
- return zBlob;
-}
-
-#if defined(SQLITE_TEST)
-/*
-** Convert text generated by the "%p" conversion format back into
-** a pointer.
-*/
-void *sqlite3TextToPtr(const char *z){
- void *p;
- u64 v;
- u32 v2;
- if( z[0]=='0' && z[1]=='x' ){
- z += 2;
- }
- v = 0;
- while( *z ){
- v = (v<<4) + hexToInt(*z);
- z++;
- }
- if( sizeof(p)==sizeof(v) ){
- p = *(void**)&v;
- }else{
- assert( sizeof(p)==sizeof(v2) );
- v2 = (u32)v;
- p = *(void**)&v2;
- }
- return p;
-}
-#endif