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Make xundump reject numbers that don't fit into integral field

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Numbers are read into a double, then cast to the field type.  The cast
may change the value.  Flag that as error, except for floating-point
fields.
This commit is contained in:
Markus Armbruster 2011-05-07 17:12:05 +02:00
parent 029d929b1b
commit 50070a8f9a
1 changed files with 18 additions and 11 deletions
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29
src/lib/common/xundump.c
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@ -514,7 +514,7 @@ setnum(int fldno, double dbl)
struct castr *ca;
int idx;
char *memb_ptr;
double old;
double old, new;
ca = getfld(fldno, &idx);
if (!ca)
@ -531,58 +531,63 @@ setnum(int fldno, double dbl)
return -1;
memb_ptr += ca->ca_off;
/* FIXME check assignment preserves value */
switch (ca->ca_type) {
case NSC_CHAR:
old = ((signed char *)memb_ptr)[idx];
((signed char *)memb_ptr)[idx] = (signed char)dbl;
new = ((signed char *)memb_ptr)[idx] = (signed char)dbl;
break;
case NSC_UCHAR:
case NSC_HIDDEN:
old = ((unsigned char *)memb_ptr)[idx];
((unsigned char *)memb_ptr)[idx] = (unsigned char)dbl;
new = ((unsigned char *)memb_ptr)[idx] = (unsigned char)dbl;
break;
case NSC_SHORT:
old = ((short *)memb_ptr)[idx];
((short *)memb_ptr)[idx] = (short)dbl;
new = ((short *)memb_ptr)[idx] = (short)dbl;
break;
case NSC_USHORT:
old = ((unsigned short *)memb_ptr)[idx];
((unsigned short *)memb_ptr)[idx] = (unsigned short)dbl;
new = ((unsigned short *)memb_ptr)[idx] = (unsigned short)dbl;
break;
case NSC_INT:
old = ((int *)memb_ptr)[idx];
((int *)memb_ptr)[idx] = (int)dbl;
new = ((int *)memb_ptr)[idx] = (int)dbl;
break;
case NSC_LONG:
old = ((long *)memb_ptr)[idx];
((long *)memb_ptr)[idx] = (long)dbl;
new = ((long *)memb_ptr)[idx] = (long)dbl;
break;
case NSC_XCOORD:
old = ((coord *)memb_ptr)[idx];
/* FIXME use variant of xrel() that takes orig instead of nation */
if (old >= WORLD_X / 2)
old -= WORLD_X;
((coord *)memb_ptr)[idx] = XNORM((coord)dbl);
new = ((coord *)memb_ptr)[idx] = XNORM((coord)dbl);
if (new >= WORLD_X / 2)
new -= WORLD_X;
break;
case NSC_YCOORD:
old = ((coord *)memb_ptr)[idx];
/* FIXME use variant of yrel() that takes orig instead of nation */
if (old >= WORLD_Y / 2)
old -= WORLD_Y;
((coord *)memb_ptr)[idx] = YNORM((coord)dbl);
new = ((coord *)memb_ptr)[idx] = YNORM((coord)dbl);
if (new >= WORLD_Y / 2)
new -= WORLD_Y;
break;
case NSC_FLOAT:
old = ((float *)memb_ptr)[idx];
((float *)memb_ptr)[idx] = (float)dbl;
new = dbl; /* suppress new != dbl check */
break;
case NSC_DOUBLE:
old = ((double *)memb_ptr)[idx];
((double *)memb_ptr)[idx] = dbl;
new = dbl; /* suppress new != dbl check */
break;
case NSC_TIME:
old = ((time_t *)memb_ptr)[idx];
((time_t *)memb_ptr)[idx] = (time_t)dbl;
new = ((time_t *)memb_ptr)[idx] = (time_t)dbl;
break;
default:
return gripe("Field %d doesn't take numbers", fldno + 1);
@ -590,6 +595,8 @@ setnum(int fldno, double dbl)
if (fldval_must_match(fldno) && old != dbl)
return gripe("Value for field %d must be %g", fldno + 1, old);
if (new != dbl)
return gripe("Field %d can't hold this value", fldno + 1);
return 1;
}