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Added the improved attribute query

This commit is contained in:
Lee Thomason 2012-03-24 13:04:04 -07:00
parent c50b6b4e7e
commit 8ba7f7d69b
3 changed files with 28 additions and 1 deletions
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11
tinyxml2.cpp
View File

@ -1074,6 +1074,17 @@ const XMLAttribute* XMLElement::FindAttribute( const char* name ) const
}
const char* XMLElement::Attribute( const char* name, const char* value ) const
{
const XMLAttribute* a = FindAttribute( name );
if ( !a )
return 0;
if ( !value || XMLUtil::StringEqual( a->Value(), value ))
return a->Value();
return 0;
}
const char* XMLElement::GetText() const
{
if ( FirstChild() && FirstChild()->ToText() ) {

17
tinyxml2.h
View File

@ -845,8 +845,23 @@ public:
/** Given an attribute name, Attribute() returns the value
for the attribute of that name, or null if none exists.
'value' is normally null. However, if specified, the attribute
will only be returned if the 'name' and 'value' match. This
allow you to write code:
@verbatim
if ( ele->Attribute( "foo", "bar" ) ) callFooIsBar();
@endverbatim
rather than:
@verbatim
if ( ele->Attribute( "foo" ) ) {
if ( strcmp( ele->Attribute( "foo" ), "bar" ) == 0 ) callFooIsBar();
}
@endverbatim
*/
const char* Attribute( const char* name ) const { const XMLAttribute* a = FindAttribute( name ); if ( !a ) return 0; return a->Value(); }
const char* Attribute( const char* name, const char* value=0 ) const;
/** Given an attribute name, IntAttribute() returns the value
of the attribute interpreted as an integer. 0 will be

1
xmltest.cpp
View File

@ -319,6 +319,7 @@ int main( int /*argc*/, const char ** /*argv*/ )
ele->QueryIntAttribute( "int", &iVal );
ele->QueryDoubleAttribute( "double", &dVal );
XMLTest( "Attribute match test", ele->Attribute( "str", "strValue" ), "strValue" );
XMLTest( "Attribute round trip. c-string.", "strValue", cStr );
XMLTest( "Attribute round trip. int.", 1, iVal );
XMLTest( "Attribute round trip. double.", -1, (int)dVal );