using namespace xmltooling;
using namespace std;
+namespace {
+ static const pair<string,string> emptyPair;
+}
+
void TemplateEngine::setTagPrefix(const char* tagPrefix)
{
keytag = string("<") + tagPrefix + " ";
const char*& lastpos,
ostream& os,
const TemplateParameters& parameters,
+ const std::pair<std::string,std::string>& loopentry,
const XMLToolingException* e
) const
{
string key = buf.substr(lastpos-line, thispos-lastpos);
trimspace(key);
- const char* p = parameters.getParameter(key.c_str());
- if (!p && e)
- p = e->getProperty(key.c_str());
- if (p)
- html_encode(os,p);
+ if (key == "$name" && !loopentry.first.empty())
+ html_encode(os,loopentry.first.c_str());
+ else if (key == "$value" && !loopentry.second.empty())
+ html_encode(os,loopentry.second.c_str());
+ else {
+ const char* p = parameters.getParameter(key.c_str());
+ if (!p && e)
+ p = e->getProperty(key.c_str());
+ if (p)
+ html_encode(os,p);
+ }
lastpos = thispos + 2; // strlen("/>")
}
}
if (visible)
cond = parameters.getParameter(key.c_str()) || (e && e->getProperty(key.c_str()));
lastpos = thispos + 1; // strlen(">")
- process(cond, buf, lastpos, os, parameters, e);
+ process(cond, buf, lastpos, os, parameters, loopentry, e);
}
}
#ifdef HAVE_STRCASECMP
if (visible)
cond = !(parameters.getParameter(key.c_str()) || (e && e->getProperty(key.c_str())));
lastpos = thispos + 1; // strlen(">")
- process(cond, buf, lastpos, os, parameters, e);
+ process(cond, buf, lastpos, os, parameters, loopentry, e);
}
}
#ifdef HAVE_STRCASECMP
lastpos = thispos + 1; // strlen(">")
}
- const vector<TemplateParameters>& forParams = parameters.getParameterCollection(key.c_str());
- vector<TemplateParameters>::size_type forend = forParams.size();
- if (forend == 0) { // have to go through at least once to match end tags
- cond = false;
- forend = 1;
+ const multimap<string,string>* forParams = parameters.getLoopCollection(key.c_str());
+ if (!forParams || forParams->size() == 0) {
+ process(false, buf, lastpos, os, parameters, emptyPair, e);
}
-
- const char *savlastpos = lastpos;
- for (vector<TemplateParameters>::size_type i=0; i<forend; ++i) {
- static TemplateParameters nullp;
- lastpos = savlastpos;
- process(cond, buf, lastpos, os, (forParams.size()>0 ? forParams[i] : nullp), e);
+ else {
+ const char* savlastpos = lastpos;
+ for (multimap<string,string>::const_iterator i=forParams->begin(); i!=forParams->end(); ++i) {
+ lastpos = savlastpos;
+ process(cond, buf, lastpos, os, parameters, *i, e);
+ }
}
-
}
#ifdef HAVE_STRCASECMP
buf += line + '\n';
const char* pos=buf.c_str();
- process(true, buf, pos, os, parameters, e);
+ process(true, buf, pos, os, parameters, emptyPair, e);
}
/*
* Copyright 2001-2009 Internet2
- *
+ *
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
/**
* @file xmltooling/util/TemplateEngine.h
- *
+ *
* Simple template replacement engine.
*/
* <li> <mlpif key> stuff </mlpif></li>
* <li> <mlpifnot key> stuff </mlpifnot></li>
* <li> <mlpfor key> stuff </mlpfor></li>
+ * <li> <mlp $name/> (in for loop only) </li>
+ * <li> <mlp $value/> (in for loop only) </li>
* </ul>
- *
+ *
* The default tag prefix is "mlp". This can be overridden for
* compatibility.
*/
MAKE_NONCOPYABLE(TemplateEngine);
public:
TemplateEngine() {
- setTagPrefix("mlp");
+ setTagPrefix("mlp");
}
virtual ~TemplateEngine() {}
-
+
/**
* Sets the tag name to use when locating template replacement tags.
- *
+ *
* @param tagPrefix base prefix for tags
*/
void setTagPrefix(const char* tagPrefix);
-
+
/**
* Interface to parameters to plug into templates.
* Allows callers to supply a more dynamic lookup mechanism to supplement a basic map.
public:
TemplateParameters() : m_request(NULL) {}
virtual ~TemplateParameters() {}
-
+
/** Map of known parameters to supply to template. */
std::map<std::string,std::string> m_map;
- std::map<std::string,std::vector<TemplateParameters> > m_collectionMap;
-
+
+ /** Map of sub-collections used in for loops. */
+ std::map< std::string,std::multimap<std::string,std::string> > m_collectionMap;
+
/** Request from client that resulted in template being processed. */
const GenericRequest* m_request;
-
+
/**
* Returns the value of a parameter to plug into the template.
- *
+ *
* @param name name of parameter
* @return value of parameter, or NULL
*/
}
/**
- * Returns the collection of parameters to plug into the template.
- *
- * @param name name of parameter collection
- * @return vector of parameters
+ * Returns a named collection of sub-parameters to pass into a loop.
+ *
+ * @param name name of sub-collection
+ * @return pointer to a multimap of sub-parameters, or NULL
*/
- virtual const std::vector<TemplateParameters>& getParameterCollection(const char* name) const {
- std::map<std::string,std::vector<TemplateParameters> >::const_iterator i=m_collectionMap.find(name);
- return (i->second);
+ virtual const std::multimap<std::string,std::string>* getLoopCollection(const char* name) const {
+ std::map< std::string,std::multimap<std::string,std::string> >::const_iterator i=m_collectionMap.find(name);
+ return (i!=m_collectionMap.end() ? &(i->second) : NULL);
}
};
-
+
/**
* Processes template from an input stream and executes replacements and
- * conditional logic based on parameters.
- *
+ * conditional logic based on parameters.
+ *
* @param is input stream providing template
* @param os output stream to send results of executing template
* @param parameters parameters to plug into template
const char*& lastpos,
std::ostream& os,
const TemplateParameters& parameters,
+ const std::pair<std::string,std::string>& loopentry,
const XMLToolingException* e
) const;
-
+
std::string keytag,iftag,ifendtag,ifnottag,ifnotendtag,fortag,forendtag;
};
};
p.m_map["foo1"] = "bar1";
p.m_map["foo3"] = "bar3";
p.m_map["encoded"] = "http://www.example.org/foo/bar#foobar";
+ multimap<string,string>& submap = p.m_collectionMap["sub"];
+ submap.insert(pair<string,string>("subfoo1", "subbar1"));
+ submap.insert(pair<string,string>("subfoo2", "subbar2"));
string path = data_path + "template.in";
ifstream in(path.c_str());
</mlpif>
<mlp encoded/>
+
+<mlpfor sub>
+ <mlp $name/> <mlp foo1/> <mlp $value/>
+</mlpfor>
http://www.example.org/foo/bar#foobar
+
+
+ subfoo1 bar1 subbar1
+
+ subfoo2 bar1 subbar2
+