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adding length() and substr() tests. fix shell.c bug (CVS 144)

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FossilOrigin-Name: b8cec9b938b4be1ccf230588d8e1564fb3ac4316
This commit is contained in:
drh
2000-08-28 16:21:58 +00:00
parent 6ec2733b44
commit ff6e9116e5
7 changed files with 122 additions and 19 deletions
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13
src/vdbe.c
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@@ -41,7 +41,7 @@
** But other routines are also provided to help in building up
** a program instruction by instruction.
**
** $Id: vdbe.c,v 1.39 2000/08/28 15:51:44 drh Exp $
** $Id: vdbe.c,v 1.40 2000/08/28 16:22:00 drh Exp $
*/
#include "sqliteInt.h"
#include <unistd.h>
@@ -3185,28 +3185,31 @@ int sqliteVdbeExec(
if( pOp->p1==0 ){
if( p->tos<0 ) goto not_enough_stack;
Integerify(p, p->tos);
start = p->aStack[p->tos].i;
start = p->aStack[p->tos].i - 1;
PopStack(p, 1);
}else{
start = pOp->p1;
start = pOp->p1 - 1;
}
if( p->tos<0 ) goto not_enough_stack;
Stringify(p, p->tos);
n = p->aStack[p->tos].n - 1;
if( start<0 ){
start += n;
start += n + 1;
if( start<0 ){
cnt += start;
start = 0;
}
}
if( start>n ){
start = n;
}
if( cnt<0 ) cnt = 0;
if( cnt > n ){
cnt = n;
}
z = sqliteMalloc( cnt+1 );
if( z==0 ) goto no_mem;
strncpy(z, p->zStack[p->tos], cnt);
strncpy(z, &p->zStack[p->tos][start], cnt);
z[cnt] = 0;
PopStack(p, 1);
p->tos++;