From ac87680632b4fb6582d1391b042eff7f0305c0a2 Mon Sep 17 00:00:00 2001 From: samelian Date: Sun, 22 May 2011 20:12:04 +0000 Subject: [kdenetwork/kopete] added cmake support git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdenetwork@1233119 283d02a7-25f6-0310-bc7c-ecb5cbfe19da --- kopete/plugins/statistics/sqlite/vdbemem.c | 724 ----------------------------- 1 file changed, 724 deletions(-) delete mode 100644 kopete/plugins/statistics/sqlite/vdbemem.c (limited to 'kopete/plugins/statistics/sqlite/vdbemem.c') diff --git a/kopete/plugins/statistics/sqlite/vdbemem.c b/kopete/plugins/statistics/sqlite/vdbemem.c deleted file mode 100644 index c6cd94e6..00000000 --- a/kopete/plugins/statistics/sqlite/vdbemem.c +++ /dev/null @@ -1,724 +0,0 @@ -/* -** 2004 May 26 -** -** 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 use to manipulate "Mem" structure. A "Mem" -** stores a single value in the VDBE. Mem is an opaque structure visible -** only within the VDBE. Interface routines refer to a Mem using the -** name sqlite_value -*/ -#include "sqliteInt.h" -#include "os.h" -#include -#include "vdbeInt.h" - -/* -** If pMem is an object with a valid string representation, this routine -** ensures the internal encoding for the string representation is -** 'desiredEnc', one of SQLITE_UTF8, SQLITE_UTF16LE or SQLITE_UTF16BE. -** -** If pMem is not a string object, or the encoding of the string -** representation is already stored using the requested encoding, then this -** routine is a no-op. -** -** SQLITE_OK is returned if the conversion is successful (or not required). -** SQLITE_NOMEM may be returned if a malloc() fails during conversion -** between formats. -*/ -int sqlite3VdbeChangeEncoding(Mem *pMem, int desiredEnc){ - if( !(pMem->flags&MEM_Str) || pMem->enc==desiredEnc ){ - return SQLITE_OK; - } - return sqlite3VdbeMemTranslate(pMem, desiredEnc); -} - -/* -** Make the given Mem object MEM_Dyn. -** -** Return SQLITE_OK on success or SQLITE_NOMEM if malloc fails. -*/ -int sqlite3VdbeMemDynamicify(Mem *pMem){ - int n = pMem->n; - u8 *z; - if( (pMem->flags & (MEM_Ephem|MEM_Static|MEM_Short))==0 ){ - return SQLITE_OK; - } - assert( (pMem->flags & MEM_Dyn)==0 ); - assert( pMem->flags & (MEM_Str|MEM_Blob) ); - z = sqliteMallocRaw( n+2 ); - if( z==0 ){ - return SQLITE_NOMEM; - } - pMem->flags |= MEM_Dyn|MEM_Term; - pMem->xDel = 0; - memcpy(z, pMem->z, n ); - z[n] = 0; - z[n+1] = 0; - pMem->z = z; - pMem->flags &= ~(MEM_Ephem|MEM_Static|MEM_Short); - return SQLITE_OK; -} - -/* -** Make the given Mem object either MEM_Short or MEM_Dyn so that bytes -** of the Mem.z[] array can be modified. -** -** Return SQLITE_OK on success or SQLITE_NOMEM if malloc fails. -*/ -int sqlite3VdbeMemMakeWriteable(Mem *pMem){ - int n; - u8 *z; - if( (pMem->flags & (MEM_Ephem|MEM_Static))==0 ){ - return SQLITE_OK; - } - assert( (pMem->flags & MEM_Dyn)==0 ); - assert( pMem->flags & (MEM_Str|MEM_Blob) ); - if( (n = pMem->n)+2zShort) ){ - z = pMem->zShort; - pMem->flags |= MEM_Short|MEM_Term; - }else{ - z = sqliteMallocRaw( n+2 ); - if( z==0 ){ - return SQLITE_NOMEM; - } - pMem->flags |= MEM_Dyn|MEM_Term; - pMem->xDel = 0; - } - memcpy(z, pMem->z, n ); - z[n] = 0; - z[n+1] = 0; - pMem->z = z; - pMem->flags &= ~(MEM_Ephem|MEM_Static); - return SQLITE_OK; -} - -/* -** Make sure the given Mem is \u0000 terminated. -*/ -int sqlite3VdbeMemNulTerminate(Mem *pMem){ - /* In SQLite, a string without a nul terminator occurs when a string - ** is loaded from disk (in this case the memory management is ephemeral), - ** or when it is supplied by the user as a bound variable or function - ** return value. Therefore, the memory management of the string must be - ** either ephemeral, static or controlled by a user-supplied destructor. - */ - assert( - !(pMem->flags&MEM_Str) || /* it's not a string, or */ - (pMem->flags&MEM_Term) || /* it's nul term. already, or */ - (pMem->flags&(MEM_Ephem|MEM_Static)) || /* it's static or ephem, or */ - (pMem->flags&MEM_Dyn && pMem->xDel) /* external management */ - ); - if( (pMem->flags & MEM_Term)!=0 || (pMem->flags & MEM_Str)==0 ){ - return SQLITE_OK; /* Nothing to do */ - } - - if( pMem->flags & (MEM_Static|MEM_Ephem) ){ - return sqlite3VdbeMemMakeWriteable(pMem); - }else{ - char *z = sqliteMalloc(pMem->n+2); - if( !z ) return SQLITE_NOMEM; - memcpy(z, pMem->z, pMem->n); - z[pMem->n] = 0; - z[pMem->n+1] = 0; - pMem->xDel(pMem->z); - pMem->xDel = 0; - pMem->z = z; - } - return SQLITE_OK; -} - -/* -** Add MEM_Str to the set of representations for the given Mem. Numbers -** are converted using sqlite3_snprintf(). Converting a BLOB to a string -** is a no-op. -** -** Existing representations MEM_Int and MEM_Real are *not* invalidated. -** -** A MEM_Null value will never be passed to this function. This function is -** used for converting values to text for returning to the user (i.e. via -** sqlite3_value_text()), or for ensuring that values to be used as btree -** keys are strings. In the former case a NULL pointer is returned the -** user and the later is an internal programming error. -*/ -int sqlite3VdbeMemStringify(Mem *pMem, int enc){ - int rc = SQLITE_OK; - int fg = pMem->flags; - u8 *z = pMem->zShort; - - assert( !(fg&(MEM_Str|MEM_Blob)) ); - assert( fg&(MEM_Int|MEM_Real) ); - - /* For a Real or Integer, use sqlite3_snprintf() to produce the UTF-8 - ** string representation of the value. Then, if the required encoding - ** is UTF-16le or UTF-16be do a translation. - ** - ** FIX ME: It would be better if sqlite3_snprintf() could do UTF-16. - */ - if( fg & MEM_Real ){ - sqlite3_snprintf(NBFS, z, "%.15g", pMem->r); - }else{ - assert( fg & MEM_Int ); - sqlite3_snprintf(NBFS, z, "%lld", pMem->i); - } - pMem->n = strlen(z); - pMem->z = z; - pMem->enc = SQLITE_UTF8; - pMem->flags |= MEM_Str | MEM_Short | MEM_Term; - sqlite3VdbeChangeEncoding(pMem, enc); - return rc; -} - -/* -** Release any memory held by the Mem. This may leave the Mem in an -** inconsistent state, for example with (Mem.z==0) and -** (Mem.type==SQLITE_TEXT). -*/ -void sqlite3VdbeMemRelease(Mem *p){ - if( p->flags & MEM_Dyn ){ - if( p->xDel ){ - p->xDel((void *)p->z); - }else{ - sqliteFree(p->z); - } - p->z = 0; - p->xDel = 0; - } -} - -/* -** Return some kind of integer value which is the best we can do -** at representing the value that *pMem describes as an integer. -** If pMem is an integer, then the value is exact. If pMem is -** a floating-point then the value returned is the integer part. -** If pMem is a string or blob, then we make an attempt to convert -** it into a integer and return that. If pMem is NULL, return 0. -** -** If pMem is a string, its encoding might be changed. -*/ -i64 sqlite3VdbeIntValue(Mem *pMem){ - int flags = pMem->flags; - if( flags & MEM_Int ){ - return pMem->i; - }else if( flags & MEM_Real ){ - return (i64)pMem->r; - }else if( flags & (MEM_Str|MEM_Blob) ){ - i64 value; - if( sqlite3VdbeChangeEncoding(pMem, SQLITE_UTF8) - || sqlite3VdbeMemNulTerminate(pMem) ){ - return SQLITE_NOMEM; - } - assert( pMem->z ); - sqlite3atoi64(pMem->z, &value); - return value; - }else{ - return 0; - } -} - -/* -** Convert pMem to type integer. Invalidate any prior representations. -*/ -int sqlite3VdbeMemIntegerify(Mem *pMem){ - pMem->i = sqlite3VdbeIntValue(pMem); - sqlite3VdbeMemRelease(pMem); - pMem->flags = MEM_Int; - return SQLITE_OK; -} - -/* -** Return the best representation of pMem that we can get into a -** double. If pMem is already a double or an integer, return its -** value. If it is a string or blob, try to convert it to a double. -** If it is a NULL, return 0.0. -*/ -double sqlite3VdbeRealValue(Mem *pMem){ - if( pMem->flags & MEM_Real ){ - return pMem->r; - }else if( pMem->flags & MEM_Int ){ - return (double)pMem->i; - }else if( pMem->flags & (MEM_Str|MEM_Blob) ){ - if( sqlite3VdbeChangeEncoding(pMem, SQLITE_UTF8) - || sqlite3VdbeMemNulTerminate(pMem) ){ - return SQLITE_NOMEM; - } - assert( pMem->z ); - return sqlite3AtoF(pMem->z, 0); - }else{ - return 0.0; - } -} - -/* -** Convert pMem so that it is of type MEM_Real. Invalidate any -** prior representations. -*/ -int sqlite3VdbeMemRealify(Mem *pMem){ - pMem->r = sqlite3VdbeRealValue(pMem); - sqlite3VdbeMemRelease(pMem); - pMem->flags = MEM_Real; - return SQLITE_OK; -} - -/* -** Delete any previous value and set the value stored in *pMem to NULL. -*/ -void sqlite3VdbeMemSetNull(Mem *pMem){ - sqlite3VdbeMemRelease(pMem); - pMem->flags = MEM_Null; - pMem->type = SQLITE_NULL; -} - -/* -** Delete any previous value and set the value stored in *pMem to val, -** manifest type INTEGER. -*/ -void sqlite3VdbeMemSetInt64(Mem *pMem, i64 val){ - sqlite3VdbeMemRelease(pMem); - pMem->i = val; - pMem->flags = MEM_Int; - pMem->type = SQLITE_INTEGER; -} - -/* -** Delete any previous value and set the value stored in *pMem to val, -** manifest type REAL. -*/ -void sqlite3VdbeMemSetDouble(Mem *pMem, double val){ - sqlite3VdbeMemRelease(pMem); - pMem->r = val; - pMem->flags = MEM_Real; - pMem->type = SQLITE_FLOAT; -} - -/* -** Make an shallow copy of pFrom into pTo. Prior contents of -** pTo are overwritten. The pFrom->z field is not duplicated. If -** pFrom->z is used, then pTo->z points to the same thing as pFrom->z -** and flags gets srcType (either MEM_Ephem or MEM_Static). -*/ -void sqlite3VdbeMemShallowCopy(Mem *pTo, const Mem *pFrom, int srcType){ - memcpy(pTo, pFrom, sizeof(*pFrom)-sizeof(pFrom->zShort)); - pTo->xDel = 0; - if( pTo->flags & (MEM_Str|MEM_Blob) ){ - pTo->flags &= ~(MEM_Dyn|MEM_Static|MEM_Short|MEM_Ephem); - assert( srcType==MEM_Ephem || srcType==MEM_Static ); - pTo->flags |= srcType; - } -} - -/* -** Make a full copy of pFrom into pTo. Prior contents of pTo are -** freed before the copy is made. -*/ -int sqlite3VdbeMemCopy(Mem *pTo, const Mem *pFrom){ - int rc; - if( pTo->flags & MEM_Dyn ){ - sqlite3VdbeMemRelease(pTo); - } - sqlite3VdbeMemShallowCopy(pTo, pFrom, MEM_Ephem); - if( pTo->flags & MEM_Ephem ){ - rc = sqlite3VdbeMemMakeWriteable(pTo); - }else{ - rc = SQLITE_OK; - } - return rc; -} - -/* -** Transfer the contents of pFrom to pTo. Any existing value in pTo is -** freed. If pFrom contains ephemeral data, a copy is made. -** -** pFrom contains an SQL NULL when this routine returns. SQLITE_NOMEM -** might be returned if pFrom held ephemeral data and we were unable -** to allocate enough space to make a copy. -*/ -int sqlite3VdbeMemMove(Mem *pTo, Mem *pFrom){ - int rc; - if( pTo->flags & MEM_Dyn ){ - sqlite3VdbeMemRelease(pTo); - } - memcpy(pTo, pFrom, sizeof(Mem)); - if( pFrom->flags & MEM_Short ){ - pTo->z = pTo->zShort; - } - pFrom->flags = MEM_Null; - pFrom->xDel = 0; - if( pTo->flags & MEM_Ephem ){ - rc = sqlite3VdbeMemMakeWriteable(pTo); - }else{ - rc = SQLITE_OK; - } - return rc; -} - -/* -** Change the value of a Mem to be a string or a BLOB. -*/ -int sqlite3VdbeMemSetStr( - Mem *pMem, /* Memory cell to set to string value */ - const char *z, /* String pointer */ - int n, /* Bytes in string, or negative */ - u8 enc, /* Encoding of z. 0 for BLOBs */ - void (*xDel)(void*) /* Destructor function */ -){ - sqlite3VdbeMemRelease(pMem); - if( !z ){ - pMem->flags = MEM_Null; - pMem->type = SQLITE_NULL; - return SQLITE_OK; - } - - pMem->z = (char *)z; - if( xDel==SQLITE_STATIC ){ - pMem->flags = MEM_Static; - }else if( xDel==SQLITE_TRANSIENT ){ - pMem->flags = MEM_Ephem; - }else{ - pMem->flags = MEM_Dyn; - pMem->xDel = xDel; - } - - pMem->enc = enc; - pMem->type = enc==0 ? SQLITE_BLOB : SQLITE_TEXT; - pMem->n = n; - - switch( enc ){ - case 0: - pMem->flags |= MEM_Blob; - break; - - case SQLITE_UTF8: - pMem->flags |= MEM_Str; - if( n<0 ){ - pMem->n = strlen(z); - pMem->flags |= MEM_Term; - } - break; - - case SQLITE_UTF16LE: - case SQLITE_UTF16BE: - pMem->flags |= MEM_Str; - if( pMem->n<0 ){ - pMem->n = sqlite3utf16ByteLen(pMem->z,-1); - pMem->flags |= MEM_Term; - } - if( sqlite3VdbeMemHandleBom(pMem) ){ - return SQLITE_NOMEM; - } - break; - - default: - assert(0); - } - if( pMem->flags&MEM_Ephem ){ - return sqlite3VdbeMemMakeWriteable(pMem); - } - return SQLITE_OK; -} - -/* -** Compare the values contained by the two memory cells, returning -** negative, zero or positive if pMem1 is less than, equal to, or greater -** than pMem2. Sorting order is NULL's first, followed by numbers (integers -** and reals) sorted numerically, followed by text ordered by the collating -** sequence pColl and finally blob's ordered by memcmp(). -** -** Two NULL values are considered equal by this function. -*/ -int sqlite3MemCompare(const Mem *pMem1, const Mem *pMem2, const CollSeq *pColl){ - int rc; - int f1, f2; - int combined_flags; - - /* Interchange pMem1 and pMem2 if the collating sequence specifies - ** DESC order. - */ - f1 = pMem1->flags; - f2 = pMem2->flags; - combined_flags = f1|f2; - - /* If one value is NULL, it is less than the other. If both values - ** are NULL, return 0. - */ - if( combined_flags&MEM_Null ){ - return (f2&MEM_Null) - (f1&MEM_Null); - } - - /* If one value is a number and the other is not, the number is less. - ** If both are numbers, compare as reals if one is a real, or as integers - ** if both values are integers. - */ - if( combined_flags&(MEM_Int|MEM_Real) ){ - if( !(f1&(MEM_Int|MEM_Real)) ){ - return 1; - } - if( !(f2&(MEM_Int|MEM_Real)) ){ - return -1; - } - if( (f1 & f2 & MEM_Int)==0 ){ - double r1, r2; - if( (f1&MEM_Real)==0 ){ - r1 = pMem1->i; - }else{ - r1 = pMem1->r; - } - if( (f2&MEM_Real)==0 ){ - r2 = pMem2->i; - }else{ - r2 = pMem2->r; - } - if( r1r2 ) return 1; - return 0; - }else{ - assert( f1&MEM_Int ); - assert( f2&MEM_Int ); - if( pMem1->i < pMem2->i ) return -1; - if( pMem1->i > pMem2->i ) return 1; - return 0; - } - } - - /* If one value is a string and the other is a blob, the string is less. - ** If both are strings, compare using the collating functions. - */ - if( combined_flags&MEM_Str ){ - if( (f1 & MEM_Str)==0 ){ - return 1; - } - if( (f2 & MEM_Str)==0 ){ - return -1; - } - - assert( pMem1->enc==pMem2->enc ); - assert( pMem1->enc==SQLITE_UTF8 || - pMem1->enc==SQLITE_UTF16LE || pMem1->enc==SQLITE_UTF16BE ); - - /* This assert may fail if the collation sequence is deleted after this - ** vdbe program is compiled. The documentation defines this as an - ** undefined condition. A crash is usual result. - */ - assert( !pColl || pColl->xCmp ); - - if( pColl ){ - if( pMem1->enc==pColl->enc ){ - return pColl->xCmp(pColl->pUser,pMem1->n,pMem1->z,pMem2->n,pMem2->z); - }else{ - u8 origEnc = pMem1->enc; - rc = pColl->xCmp( - pColl->pUser, - sqlite3ValueBytes((sqlite3_value*)pMem1, pColl->enc), - sqlite3ValueText((sqlite3_value*)pMem1, pColl->enc), - sqlite3ValueBytes((sqlite3_value*)pMem2, pColl->enc), - sqlite3ValueText((sqlite3_value*)pMem2, pColl->enc) - ); - sqlite3ValueBytes((sqlite3_value*)pMem1, origEnc); - sqlite3ValueText((sqlite3_value*)pMem1, origEnc); - sqlite3ValueBytes((sqlite3_value*)pMem2, origEnc); - sqlite3ValueText((sqlite3_value*)pMem2, origEnc); - return rc; - } - } - /* If a NULL pointer was passed as the collate function, fall through - ** to the blob case and use memcmp(). */ - } - - /* Both values must be blobs. Compare using memcmp(). */ - rc = memcmp(pMem1->z, pMem2->z, (pMem1->n>pMem2->n)?pMem2->n:pMem1->n); - if( rc==0 ){ - rc = pMem1->n - pMem2->n; - } - return rc; -} - -/* -** Move data out of a btree key or data field and into a Mem structure. -** The data or key is taken from the entry that pCur is currently pointing -** to. offset and amt determine what portion of the data or key to retrieve. -** key is true to get the key or false to get data. The result is written -** into the pMem element. -** -** The pMem structure is assumed to be uninitialized. Any prior content -** is overwritten without being freed. -** -** If this routine fails for any reason (malloc returns NULL or unable -** to read from the disk) then the pMem is left in an inconsistent state. -*/ -int sqlite3VdbeMemFromBtree( - BtCursor *pCur, /* Cursor pointing at record to retrieve. */ - int offset, /* Offset from the start of data to return bytes from. */ - int amt, /* Number of bytes to return. */ - int key, /* If true, retrieve from the btree key, not data. */ - Mem *pMem /* OUT: Return data in this Mem structure. */ -){ - char *zData; /* Data from the btree layer */ - int available; /* Number of bytes available on the local btree page */ - - if( key ){ - zData = (char *)sqlite3BtreeKeyFetch(pCur, &available); - }else{ - zData = (char *)sqlite3BtreeDataFetch(pCur, &available); - } - - pMem->n = amt; - if( offset+amt<=available ){ - pMem->z = &zData[offset]; - pMem->flags = MEM_Blob|MEM_Ephem; - }else{ - int rc; - if( amt>NBFS-2 ){ - zData = (char *)sqliteMallocRaw(amt+2); - if( !zData ){ - return SQLITE_NOMEM; - } - pMem->flags = MEM_Blob|MEM_Dyn|MEM_Term; - pMem->xDel = 0; - }else{ - zData = &(pMem->zShort[0]); - pMem->flags = MEM_Blob|MEM_Short|MEM_Term; - } - pMem->z = zData; - pMem->enc = 0; - pMem->type = SQLITE_BLOB; - - if( key ){ - rc = sqlite3BtreeKey(pCur, offset, amt, zData); - }else{ - rc = sqlite3BtreeData(pCur, offset, amt, zData); - } - zData[amt] = 0; - zData[amt+1] = 0; - if( rc!=SQLITE_OK ){ - if( amt>NBFS ){ - sqliteFree(zData); - } - return rc; - } - } - - return SQLITE_OK; -} - -#ifndef NDEBUG -/* -** Perform various checks on the memory cell pMem. An assert() will -** fail if pMem is internally inconsistent. -*/ -void sqlite3VdbeMemSanity(Mem *pMem, u8 db_enc){ - int flags = pMem->flags; - assert( flags!=0 ); /* Must define some type */ - if( pMem->flags & (MEM_Str|MEM_Blob) ){ - int x = pMem->flags & (MEM_Static|MEM_Dyn|MEM_Ephem|MEM_Short); - assert( x!=0 ); /* Strings must define a string subtype */ - assert( (x & (x-1))==0 ); /* Only one string subtype can be defined */ - assert( pMem->z!=0 ); /* Strings must have a value */ - /* Mem.z points to Mem.zShort iff the subtype is MEM_Short */ - assert( (pMem->flags & MEM_Short)==0 || pMem->z==pMem->zShort ); - assert( (pMem->flags & MEM_Short)!=0 || pMem->z!=pMem->zShort ); - /* No destructor unless there is MEM_Dyn */ - assert( pMem->xDel==0 || (pMem->flags & MEM_Dyn)!=0 ); - - if( (flags & MEM_Str) ){ - assert( pMem->enc==SQLITE_UTF8 || - pMem->enc==SQLITE_UTF16BE || - pMem->enc==SQLITE_UTF16LE - ); - /* If the string is UTF-8 encoded and nul terminated, then pMem->n - ** must be the length of the string. (Later:) If the database file - ** has been corrupted, '\000' characters might have been inserted - ** into the middle of the string. In that case, the strlen() might - ** be less. - */ - if( pMem->enc==SQLITE_UTF8 && (flags & MEM_Term) ){ - assert( strlen(pMem->z)<=pMem->n ); - assert( pMem->z[pMem->n]==0 ); - } - } - }else{ - /* Cannot define a string subtype for non-string objects */ - assert( (pMem->flags & (MEM_Static|MEM_Dyn|MEM_Ephem|MEM_Short))==0 ); - assert( pMem->xDel==0 ); - } - /* MEM_Null excludes all other types */ - assert( (pMem->flags&(MEM_Str|MEM_Int|MEM_Real|MEM_Blob))==0 - || (pMem->flags&MEM_Null)==0 ); - if( (pMem->flags & (MEM_Int|MEM_Real))==(MEM_Int|MEM_Real) ){ - assert( pMem->r==pMem->i ); - } -} -#endif - -/* This function is only available internally, it is not part of the -** external API. It works in a similar way to sqlite3_value_text(), -** except the data returned is in the encoding specified by the second -** parameter, which must be one of SQLITE_UTF16BE, SQLITE_UTF16LE or -** SQLITE_UTF8. -*/ -const void *sqlite3ValueText(sqlite3_value* pVal, u8 enc){ - if( !pVal ) return 0; - assert( enc==SQLITE_UTF16LE || enc==SQLITE_UTF16BE || enc==SQLITE_UTF8); - - if( pVal->flags&MEM_Null ){ - return 0; - } - if( pVal->flags&MEM_Str ){ - sqlite3VdbeChangeEncoding(pVal, enc); - }else if( !(pVal->flags&MEM_Blob) ){ - sqlite3VdbeMemStringify(pVal, enc); - } - return (const void *)(pVal->z); -} - -/* -** Create a new sqlite3_value object. -*/ -sqlite3_value* sqlite3ValueNew(){ - Mem *p = sqliteMalloc(sizeof(*p)); - if( p ){ - p->flags = MEM_Null; - p->type = SQLITE_NULL; - } - return p; -} - -/* -** Change the string value of an sqlite3_value object -*/ -void sqlite3ValueSetStr( - sqlite3_value *v, - int n, - const void *z, - u8 enc, - void (*xDel)(void*) -){ - if( v ) sqlite3VdbeMemSetStr((Mem *)v, z, n, enc, xDel); -} - -/* -** Free an sqlite3_value object -*/ -void sqlite3ValueFree(sqlite3_value *v){ - if( !v ) return; - sqlite3ValueSetStr(v, 0, 0, SQLITE_UTF8, SQLITE_STATIC); - sqliteFree(v); -} - -/* -** Return the number of bytes in the sqlite3_value object assuming -** that it uses the encoding "enc" -*/ -int sqlite3ValueBytes(sqlite3_value *pVal, u8 enc){ - Mem *p = (Mem*)pVal; - if( (p->flags & MEM_Blob)!=0 || sqlite3ValueText(pVal, enc) ){ - return p->n; - } - return 0; -} -- cgit v1.2.1