[sql] Import SQLite 3.17.0.

third_party/sqlite/src/ext/misc/amatch.c

 /*
 ** 2013-03-14
 **
 ** 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.
 **
@@ skipping 607 matching lines @@
   if( strcmp(zFrom,"?")==0 && strcmp(zTo,"")==0 ){
     if( p->rDel==0 || p->rDel>rCost ) p->rDel = rCost;
   }else
   {
     pRule = sqlite3_malloc( sizeof(*pRule) + nFrom + nTo );
     if( pRule==0 ){
       rc = SQLITE_NOMEM;
     }else{
       memset(pRule, 0, sizeof(*pRule));
       pRule->zFrom = &pRule->zTo[nTo+1];
-      pRule->nFrom = nFrom;
+      pRule->nFrom = (amatch_len)nFrom;
       memcpy(pRule->zFrom, zFrom, nFrom+1);
       memcpy(pRule->zTo, zTo, nTo+1);
-      pRule->nTo = nTo;
+      pRule->nTo = (amatch_len)nTo;
       pRule->rCost = rCost;
       pRule->iLang = (int)iLang;
     }
   }
 
   *ppRule = pRule;
   return rc;
 }
 
 /*
@@ skipping 432 matching lines @@
       assert( pOther==0 ); (void)pOther;
     }
     return;
   }
   pWord = sqlite3_malloc( sizeof(*pWord) + nBase + nTail - 1 );
   if( pWord==0 ) return;
   memset(pWord, 0, sizeof(*pWord));
   pWord->rCost = rCost;
   pWord->iSeq = pCur->nWord++;
   amatchWriteCost(pWord);
-  pWord->nMatch = nMatch;
+  pWord->nMatch = (short)nMatch;
   pWord->pNext = pCur->pAllWords;
   pCur->pAllWords = pWord;
   pWord->sCost.zKey = pWord->zCost;
   pWord->sCost.pWord = pWord;
   pOther = amatchAvlInsert(&pCur->pCost, &pWord->sCost);
   assert( pOther==0 ); (void)pOther;
   pWord->sWord.zKey = pWord->zWord;
   pWord->sWord.pWord = pWord;
   amatchStrcpy(pWord->zWord, pCur->zBuf);
   pOther = amatchAvlInsert(&pCur->pWord, &pWord->sWord);
@@ skipping 60 matching lines @@
     pWord = pNode->pWord;
     amatchAvlRemove(&pCur->pCost, &pWord->sCost);
 
 #ifdef AMATCH_TRACE_1
     printf("PROCESS [%s][%.*s^%s] %d (\"%s\" \"%s\")\n",
        pWord->zWord+2, pWord->nMatch, pCur->zInput, pCur->zInput+pWord->nMatch,
        pWord->rCost, pWord->zWord, pWord->zCost);
 #endif
     nWord = (int)strlen(pWord->zWord+2);
     if( nWord+20>nBuf ){
-      nBuf = nWord+100;
+      nBuf = (char)(nWord+100);
       zBuf = sqlite3_realloc(zBuf, nBuf);
       if( zBuf==0 ) return SQLITE_NOMEM;
     }
     amatchStrcpy(zBuf, pWord->zWord+2);
     zNext[0] = 0;
     zNextIn[0] = pCur->zInput[pWord->nMatch];
     if( zNextIn[0] ){
       for(i=1; i<=4 && (pCur->zInput[pWord->nMatch+i]&0xc0)==0x80; i++){
         zNextIn[i] = pCur->zInput[pWord->nMatch+i];
       }
@@ skipping 320 matching lines @@
   const sqlite3_api_routines *pApi
 ){
   int rc = SQLITE_OK;
   SQLITE_EXTENSION_INIT2(pApi);
   (void)pzErrMsg;  /* Not used */
 #ifndef SQLITE_OMIT_VIRTUALTABLE
   rc = sqlite3_create_module(db, "approximate_match", &amatchModule, 0);
 #endif /* SQLITE_OMIT_VIRTUALTABLE */
   return rc;
 }