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diff --git a/sqlite3.c b/sqlite3.c
index c607252..2c133c5 100644
--- a/sqlite3.c
+++ b/sqlite3.c
@@ -181825,49 +181825,46 @@ rtreeInit_fail:
** <num-dimension>*2 coordinates.
*/
static void rtreenode(sqlite3_context *ctx, int nArg, sqlite3_value **apArg){
- char *zText = 0;
RtreeNode node;
Rtree tree;
int ii;
+ int nData;
+ int errCode;
+ sqlite3_str *pOut;
UNUSED_PARAMETER(nArg);
memset(&node, 0, sizeof(RtreeNode));
memset(&tree, 0, sizeof(Rtree));
tree.nDim = (u8)sqlite3_value_int(apArg[0]);
+ if( tree.nDim<1 || tree.nDim>5 ) return;
tree.nDim2 = tree.nDim*2;
tree.nBytesPerCell = 8 + 8 * tree.nDim;
node.zData = (u8 *)sqlite3_value_blob(apArg[1]);
+ nData = sqlite3_value_bytes(apArg[1]);
+ if( nData<4 ) return;
+ if( nData<NCELL(&node)*tree.nBytesPerCell ) return;
+ pOut = sqlite3_str_new(0);
for(ii=0; ii<NCELL(&node); ii++){
- char zCell[512];
- int nCell = 0;
RtreeCell cell;
int jj;
nodeGetCell(&tree, &node, ii, &cell);
- sqlite3_snprintf(512-nCell,&zCell[nCell],"%lld", cell.iRowid);
- nCell = (int)strlen(zCell);
+ if( ii>0 ) sqlite3_str_append(pOut, " ", 1);
+ sqlite3_str_appendf(pOut, "{%lld", cell.iRowid);
for(jj=0; jj<tree.nDim2; jj++){
#ifndef SQLITE_RTREE_INT_ONLY
- sqlite3_snprintf(512-nCell,&zCell[nCell], " %g",
- (double)cell.aCoord[jj].f);
+ sqlite3_str_appendf(pOut, " %g", (double)cell.aCoord[jj].f);
#else
- sqlite3_snprintf(512-nCell,&zCell[nCell], " %d",
- cell.aCoord[jj].i);
+ sqlite3_str_appendf(pOut, " %d", cell.aCoord[jj].i);
#endif
- nCell = (int)strlen(zCell);
- }
-
- if( zText ){
- char *zTextNew = sqlite3_mprintf("%s {%s}", zText, zCell);
- sqlite3_free(zText);
- zText = zTextNew;
- }else{
- zText = sqlite3_mprintf("{%s}", zCell);
}
+ sqlite3_str_append(pOut, "}", 1);
}
- sqlite3_result_text(ctx, zText, -1, sqlite3_free);
+ errCode = sqlite3_str_errcode(pOut);
+ sqlite3_result_text(ctx, sqlite3_str_finish(pOut), -1, sqlite3_free);
+ sqlite3_result_error_code(ctx, errCode);
}
/* This routine implements an SQL function that returns the "depth" parameter
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