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Fix IntlPartsIterator key off-by-one error

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Closes GH-7734
Closes GH-8172
This commit is contained in:
Ilija Tovilo 2022-03-04 10:59:52 +01:00
parent 62a1c068fe
commit e706d024b2
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5 changed files with 66 additions and 10 deletions
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15
ext/intl/breakiterator/breakiterator_iterators.cpp
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@ -127,6 +127,7 @@ typedef struct zoi_break_iter_parts {
zoi_with_current zoi_cur;
parts_iter_key_type key_type;
BreakIterator_object *bio; /* so we don't have to fetch it all the time */
zend_ulong index_right;
} zoi_break_iter_parts;
static void _breakiterator_parts_destroy_it(zend_object_iterator *iter)
@ -136,8 +137,16 @@ static void _breakiterator_parts_destroy_it(zend_object_iterator *iter)
static void _breakiterator_parts_get_current_key(zend_object_iterator *iter, zval *key)
{
/* the actual work is done in move_forward and rewind */
ZVAL_LONG(key, iter->index);
// The engine resets the iterator index to -1 after rewinding. When using
// PARTS_ITERATOR_KEY_RIGHT we store it in zoi_break_iter_parts.index_right
// so it doesn't get lost.
zoi_break_iter_parts *zoi_bit = (zoi_break_iter_parts*)iter;
if (zoi_bit->key_type == PARTS_ITERATOR_KEY_RIGHT && iter->index == 0) {
ZVAL_LONG(key, zoi_bit->index_right);
} else {
ZVAL_LONG(key, iter->index);
}
}
static void _breakiterator_parts_move_forward(zend_object_iterator *iter)
@ -163,6 +172,7 @@ static void _breakiterator_parts_move_forward(zend_object_iterator *iter)
iter->index = cur;
} else if (zoi_bit->key_type == PARTS_ITERATOR_KEY_RIGHT) {
iter->index = next;
zoi_bit->index_right = next;
}
/* else zoi_bit->key_type == PARTS_ITERATOR_KEY_SEQUENTIAL
* No need to do anything, the engine increments ->index */
@ -229,6 +239,7 @@ void IntlIterator_from_BreakIterator_parts(zval *break_iter_zv,
assert(((zoi_break_iter_parts*)ii->iterator)->bio->biter != NULL);
((zoi_break_iter_parts*)ii->iterator)->key_type = key_type;
((zoi_break_iter_parts*)ii->iterator)->index_right = 0;
}
U_CFUNC PHP_METHOD(IntlPartsIterator, getBreakIterator)