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Fixed iterator functions and xml_node::print to work correctly with empty nodes, replaced empty() with direct _root/_attr check everywhere

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git-svn-id: http://pugixml.googlecode.com/svn/trunk@126 99668b35-9821-0410-8761-19e4c4f06640
This commit is contained in:
arseny.kapoulkine 2009-08-31 14:11:23 +00:00
parent bc98c9e585
commit 3a9e08becd
2 changed files with 2124 additions and 2130 deletions
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133
src/pugixml.cpp
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@ -1763,18 +1763,18 @@ namespace pugi
#ifdef __MWERKS__
xml_attribute::operator xml_attribute::unspecified_bool_type() const
{
return empty() ? 0 : &xml_attribute::empty;
return _attr ? &xml_attribute::empty : 0;
}
#else
xml_attribute::operator xml_attribute::unspecified_bool_type() const
{
return empty() ? 0 : &xml_attribute::_attr;
return _attr ? &xml_attribute::_attr : 0;
}
#endif
bool xml_attribute::operator!() const
{
return empty();
return !_attr;
}
bool xml_attribute::operator==(const xml_attribute& r) const
@ -1819,65 +1819,52 @@ namespace pugi
int xml_attribute::as_int() const
{
if(empty() || !_attr->value) return 0;
return atoi(_attr->value);
return (_attr && _attr->value) ? atoi(_attr->value) : 0;
}
unsigned int xml_attribute::as_uint() const
{
if(empty() || !_attr->value) return 0;
int result = atoi(_attr->value);
int result = (_attr && _attr->value) ? atoi(_attr->value) : 0;
return result < 0 ? 0 : static_cast<unsigned int>(result);
}
double xml_attribute::as_double() const
{
if(empty() || !_attr->value) return 0.0;
return atof(_attr->value);
return (_attr && _attr->value) ? atof(_attr->value) : 0;
}
float xml_attribute::as_float() const
{
if(empty() || !_attr->value) return 0.0f;
return (float)atof(_attr->value);
return (_attr && _attr->value) ? (float)atof(_attr->value) : 0;
}
bool xml_attribute::as_bool() const
{
if(empty() || !_attr->value) return false;
if(*(_attr->value))
{
return // Only look at first char:
(
*(_attr->value) == '1' || // 1*
*(_attr->value) == 't' || // t* (true)
*(_attr->value) == 'T' || // T* (true|true)
*(_attr->value) == 'y' || // y* (yes)
*(_attr->value) == 'Y' // Y* (Yes|YES)
)
? true : false; // Return true if matches above, else false.
}
else return false;
// only look at first char
char first = (_attr && _attr->value) ? *_attr->value : 0;
// 1*, t* (true), T* (True), y* (yes), Y* (YES)
return (first == '1' || first == 't' || first == 'T' || first == 'y' || first == 'Y');
}
bool xml_attribute::empty() const
{
return (_attr == 0);
return !_attr;
}
const char* xml_attribute::name() const
{
return (!empty() && _attr->name) ? _attr->name : "";
return (_attr && _attr->name) ? _attr->name : "";
}
const char* xml_attribute::value() const
{
return (!empty() && _attr->value) ? _attr->value : "";
return (_attr && _attr->value) ? _attr->value : "";
}
unsigned int xml_attribute::document_order() const
{
return empty() ? 0 : _attr->document_order;
return _attr ? _attr->document_order : 0;
}
xml_attribute& xml_attribute::operator=(const char* rhs)
@ -1918,7 +1905,7 @@ namespace pugi
bool xml_attribute::set_name(const char* rhs)
{
if (empty()) return false;
if (!_attr) return false;
bool insitu = _attr->name_insitu;
bool res = strcpy_insitu(_attr->name, insitu, rhs);
@ -1929,7 +1916,7 @@ namespace pugi
bool xml_attribute::set_value(const char* rhs)
{
if (empty()) return false;
if (!_attr) return false;
bool insitu = _attr->value_insitu;
bool res = strcpy_insitu(_attr->value, insitu, rhs);
@ -1961,38 +1948,38 @@ namespace pugi
#ifdef __MWERKS__
xml_node::operator xml_node::unspecified_bool_type() const
{
return empty() ? 0 : &xml_node::empty;
return _root ? &xml_node::empty : 0;
}
#else
xml_node::operator xml_node::unspecified_bool_type() const
{
return empty() ? 0 : &xml_node::_root;
return _root ? &xml_node::_root : 0;
}
#endif
bool xml_node::operator!() const
{
return empty();
return !_root;
}
xml_node::iterator xml_node::begin() const
{
return iterator(_root->first_child);
return _root ? iterator(_root->first_child) : iterator();
}
xml_node::iterator xml_node::end() const
{
return iterator(0, _root->last_child);
return _root ? iterator(0, _root->last_child) : iterator();
}
xml_node::attribute_iterator xml_node::attributes_begin() const
{
return attribute_iterator(_root->first_attribute);
return _root ? attribute_iterator(_root->first_attribute) : attribute_iterator();
}
xml_node::attribute_iterator xml_node::attributes_end() const
{
return attribute_iterator(0, _root->last_attribute);
return _root ? attribute_iterator(0, _root->last_attribute) : attribute_iterator();
}
bool xml_node::operator==(const xml_node& r) const
@ -2027,7 +2014,7 @@ namespace pugi
bool xml_node::empty() const
{
return (_root == 0);
return !_root;
}
xml_allocator& xml_node::get_allocator() const
@ -2039,7 +2026,7 @@ namespace pugi
const char* xml_node::name() const
{
return (!empty() && _root->name) ? _root->name : "";
return (_root && _root->name) ? _root->name : "";
}
xml_node_type xml_node::type() const
@ -2049,23 +2036,25 @@ namespace pugi
const char* xml_node::value() const
{
return (!empty() && _root->value) ? _root->value : "";
return (_root && _root->value) ? _root->value : "";
}
xml_node xml_node::child(const char* name) const
{
if (!empty())
for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
if (i->name && !strcmp(name, i->name)) return xml_node(i);
if (!_root) return xml_node();
for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
if (i->name && !strcmp(name, i->name)) return xml_node(i);
return xml_node();
}
xml_node xml_node::child_w(const char* name) const
{
if (!empty())
for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
if (i->name && !impl::strcmpwild(name, i->name)) return xml_node(i);
if (!_root) return xml_node();
for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
if (i->name && !impl::strcmpwild(name, i->name)) return xml_node(i);
return xml_node();
}
@ -2094,7 +2083,7 @@ namespace pugi
xml_node xml_node::next_sibling(const char* name) const
{
if(empty()) return xml_node();
if (!_root) return xml_node();
for (xml_node_struct* i = _root->next_sibling; i; i = i->next_sibling)
if (i->name && !strcmp(name, i->name)) return xml_node(i);
@ -2104,7 +2093,7 @@ namespace pugi
xml_node xml_node::next_sibling_w(const char* name) const
{
if(empty()) return xml_node();
if (!_root) return xml_node();
for (xml_node_struct* i = _root->next_sibling; i; i = i->next_sibling)
if (i->name && !impl::strcmpwild(name, i->name)) return xml_node(i);
@ -2114,7 +2103,7 @@ namespace pugi
xml_node xml_node::next_sibling() const
{
if(empty()) return xml_node();
if (!_root) return xml_node();
if (_root->next_sibling) return xml_node(_root->next_sibling);
else return xml_node();
@ -2122,7 +2111,7 @@ namespace pugi
xml_node xml_node::previous_sibling(const char* name) const
{
if (empty()) return xml_node();
if (!_root) return xml_node();
for (xml_node_struct* i = _root->prev_sibling; i; i = i->prev_sibling)
if (i->name && !strcmp(name, i->name)) return xml_node(i);
@ -2132,7 +2121,7 @@ namespace pugi
xml_node xml_node::previous_sibling_w(const char* name) const
{
if (empty()) return xml_node();
if (!_root) return xml_node();
for (xml_node_struct* i = _root->prev_sibling; i; i = i->prev_sibling)
if (i->name && !impl::strcmpwild(name, i->name)) return xml_node(i);
@ -2142,7 +2131,7 @@ namespace pugi
xml_node xml_node::previous_sibling() const
{
if(empty()) return xml_node();
if (!_root) return xml_node();
if (_root->prev_sibling) return xml_node(_root->prev_sibling);
else return xml_node();
@ -2150,7 +2139,7 @@ namespace pugi
xml_node xml_node::parent() const
{
return empty() ? xml_node() : xml_node(_root->parent);
return _root ? xml_node(_root->parent) : xml_node();
}
xml_node xml_node::root() const
@ -2162,10 +2151,12 @@ namespace pugi
const char* xml_node::child_value() const
{
if (!empty())
for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
if ((static_cast<xml_node_type>(i->type) == node_pcdata || static_cast<xml_node_type>(i->type) == node_cdata) && i->value)
return i->value;
if (!_root) return "";
for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
if ((static_cast<xml_node_type>(i->type) == node_pcdata || static_cast<xml_node_type>(i->type) == node_cdata) && i->value)
return i->value;
return "";
}
@ -2191,14 +2182,12 @@ namespace pugi
xml_node xml_node::first_child() const
{
if (_root) return xml_node(_root->first_child);
else return xml_node();
return _root ? xml_node(_root->first_child) : xml_node();
}
xml_node xml_node::last_child() const
{
if (_root) return xml_node(_root->last_child);
else return xml_node();
return _root ? xml_node(_root->last_child) : xml_node();
}
bool xml_node::set_name(const char* rhs)
@ -2415,7 +2404,7 @@ namespace pugi
void xml_node::remove_attribute(const xml_attribute& a)
{
if (empty()) return;
if (!_root) return;
// check that attribute belongs to *this
xml_attribute_struct* attr = a._attr;
@ -2440,7 +2429,7 @@ namespace pugi
void xml_node::remove_child(const xml_node& n)
{
if (empty() || n.parent() != *this) return;
if (!_root || n.parent() != *this) return;
if (n._root->next_sibling) n._root->next_sibling->prev_sibling = n._root->prev_sibling;
else _root->last_child = n._root->prev_sibling;
@ -2453,7 +2442,7 @@ namespace pugi
xml_node xml_node::find_child_by_attribute(const char* name, const char* attr_name, const char* attr_value) const
{
if (empty()) return xml_node();
if (!_root) return xml_node();
for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
if (i->name && !strcmp(name, i->name))
@ -2468,7 +2457,7 @@ namespace pugi
xml_node xml_node::find_child_by_attribute_w(const char* name, const char* attr_name, const char* attr_value) const
{
if (empty()) return xml_node();
if (!_root) return xml_node();
for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
if (i->name && !impl::strcmpwild(name, i->name))
@ -2483,7 +2472,7 @@ namespace pugi
xml_node xml_node::find_child_by_attribute(const char* attr_name, const char* attr_value) const
{
if (empty()) return xml_node();
if (!_root) return xml_node();
for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
for (xml_attribute_struct* a = i->first_attribute; a; a = a->next_attribute)
@ -2495,7 +2484,7 @@ namespace pugi
xml_node xml_node::find_child_by_attribute_w(const char* attr_name, const char* attr_value) const
{
if (empty()) return xml_node();
if (!_root) return xml_node();
for (xml_node_struct* i = _root->first_child; i; i = i->next_sibling)
for (xml_attribute_struct* a = i->first_attribute; a; a = a->next_attribute)
@ -2532,7 +2521,7 @@ namespace pugi
{
xml_node found = *this; // Current search context.
if (empty() || !path || !path[0]) return found;
if (!_root || !path || !path[0]) return found;
if (path[0] == delimiter)
{
@ -2620,7 +2609,7 @@ namespace pugi
unsigned int xml_node::document_order() const
{
return empty() ? 0 : _root->document_order;
return _root ? _root->document_order : 0;
}
void xml_node::precompute_document_order_impl()
@ -2653,7 +2642,7 @@ namespace pugi
void xml_node::print(xml_writer& writer, const char* indent, unsigned int flags, unsigned int depth)
{
if (empty()) return;
if (!_root) return;
xml_buffered_writer buffered_writer(writer);
@ -2663,6 +2652,8 @@ namespace pugi
#ifndef PUGIXML_NO_STL
void xml_node::print(std::ostream& stream, const char* indent, unsigned int flags, unsigned int depth)
{
if (!_root) return;
xml_writer_stream writer(stream);
print(writer, indent, flags, depth);

4121
src/pugixml.hpp
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