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add a const method to check for existing key/value properties

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handy to lookup up XMLNodes with "id" == ID w/o allocating memory.
This commit is contained in:
Robin Gareus 2016-05-03 02:07:40 +02:00
parent c2e4cd2c6a
commit 255b5174c4
2 changed files with 15 additions and 2 deletions
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6
libs/pbd/pbd/xml++.h
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@ -119,8 +119,10 @@ public:
const XMLPropertyList& properties() const { return _proplist; }
XMLProperty* property(const char*);
XMLProperty* property(const std::string&);
const XMLProperty* property(const char* n) const { return const_cast<XMLNode*>(this)->property(n); }
const XMLProperty* property(const std::string& n) const { return const_cast<XMLNode*>(this)->property(n); }
const XMLProperty* property(const char* n) const { return const_cast<XMLNode*>(this)->property(n); }
const XMLProperty* property(const std::string& n) const { return const_cast<XMLNode*>(this)->property(n); }
bool has_property_with_value (const std::string&, const std::string&) const;
XMLProperty* add_property(const char* name, const std::string& value);
XMLProperty* add_property(const char* name, const char* value = "");

11
libs/pbd/xml++.cc
View File

@ -429,6 +429,17 @@ XMLNode::property(const string& ns)
return 0;
}
bool
XMLNode::has_property_with_value (const string& key, const string& value) const
{
map<string,XMLProperty*>::const_iterator iter = _propmap.find(key);
if (iter != _propmap.end()) {
const XMLProperty* p = (iter->second);
return (p && p->value() == value);
}
return false;
}
XMLProperty*
XMLNode::add_property(const char* n, const string& v)
{