diff options
| -rw-r--r-- | src/pugixml.cpp | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/src/pugixml.cpp b/src/pugixml.cpp index 2e25551..56cd941 100644 --- a/src/pugixml.cpp +++ b/src/pugixml.cpp @@ -7625,8 +7625,8 @@ PUGI__NS_BEGIN static char_t* duplicate_string(const char_t* string, size_t length, xpath_allocator* alloc) { - char_t* result = static_cast<char_t*>(alloc->allocate_throw((length + 1) * sizeof(char_t))); - assert(result); + char_t* result = static_cast<char_t*>(alloc->allocate_nothrow((length + 1) * sizeof(char_t))); + if (!result) return 0; memcpy(result, string, length * sizeof(char_t)); result[length] = 0; @@ -7655,9 +7655,13 @@ PUGI__NS_BEGIN { assert(begin <= end); + if (begin == end) + return xpath_string(); + size_t length = static_cast<size_t>(end - begin); + const char_t* data = duplicate_string(begin, length, alloc); - return length == 0 ? xpath_string() : xpath_string(duplicate_string(begin, length, alloc), true, length); + return data ? xpath_string(data, true, length) : xpath_string(); } xpath_string(): _buffer(PUGIXML_TEXT("")), _uses_heap(false), _length_heap(0) @@ -7715,8 +7719,11 @@ PUGI__NS_BEGIN if (!_uses_heap) { size_t length_ = strlength(_buffer); + const char_t* data_ = duplicate_string(_buffer, length_, alloc); + + if (!data_) return 0; - _buffer = duplicate_string(_buffer, length_, alloc); + _buffer = data_; _uses_heap = true; _length_heap = length_; } @@ -10595,6 +10602,8 @@ PUGI__NS_BEGIN xpath_string s = string_value(c.n, stack.result); char_t* begin = s.data(stack.result); + if (!begin) return xpath_string(); + char_t* end = normalize_space(begin); return xpath_string::from_heap_preallocated(begin, end); @@ -10605,6 +10614,8 @@ PUGI__NS_BEGIN xpath_string s = _left->eval_string(c, stack); char_t* begin = s.data(stack.result); + if (!begin) return xpath_string(); + char_t* end = normalize_space(begin); return xpath_string::from_heap_preallocated(begin, end); @@ -10621,6 +10632,8 @@ PUGI__NS_BEGIN xpath_string to = _right->_next->eval_string(c, swapped_stack); char_t* begin = s.data(stack.result); + if (!begin) return xpath_string(); + char_t* end = translate(begin, from.c_str(), to.c_str(), to.length()); return xpath_string::from_heap_preallocated(begin, end); @@ -10631,6 +10644,8 @@ PUGI__NS_BEGIN xpath_string s = _left->eval_string(c, stack); char_t* begin = s.data(stack.result); + if (!begin) return xpath_string(); + char_t* end = translate_table(begin, _data.table); return xpath_string::from_heap_preallocated(begin, end); |