+/* This file is part of EdiTeX, an editor of mathematical
+ * expressions based on TeX syntax.
+ *
+ * Copyright (C) 2002-2003 Luca Padovani <lpadovan@cs.unibo.it>,
+ * 2003 Paolo Marinelli <pmarinel@cs.unibo.it>.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * For more information, please visit the project's home page
+ * http://helm.cs.unibo.it/editex/
+ * or send an email to <lpadovan@cs.unibo.it>
+ */
#include <sstream>
#include "dom.hh"
#include "TDictionary.hh"
#include "TTokenizer.hh"
+#include "CLoggerConsole.hh"
static TDictionary::Entry undefinedEntry;
+static std::string
+getURIBase(const std::string& uri)
+{
+ std::string::size_type slash = uri.rfind('/');
+ if (slash != std::string::npos) return uri.substr(0, slash + 1);
+ else return "";
+}
+
+static std::string
+getURIName(const std::string& uri)
+{
+ std::string::size_type slash = uri.rfind('/');
+ if (slash != std::string::npos) return uri.substr(slash + 1, uri.size());
+ else return uri;
+}
+
void
-TDictionary::load(const char* uri)
+TDictionary::load(const std::string& uri)
{
+ load(getURIName(uri), getURIBase(uri));
+}
+
+void
+TDictionary::load(const std::string& name, const std::string& base)
+{
+ logger.debug("Dictionary: loading `" + base + name + "'");
+
DOM::DOMImplementation di;
+ DOM::Document doc = di.createDocumentFromURI((base + name).c_str());
+ assert(doc);
+ load(doc, base);
+}
- DOM::Document doc = di.createDocumentFromURI(uri);
+void
+TDictionary::load(const DOM::Document& doc, const std::string& base)
+{
assert(doc);
DOM::Element root = doc.get_documentElement();
assert(root);
- TTokenizer tokenizer;
+ CLoggerConsole logger;
+ TTokenizer tokenizer(logger);
for (DOM::Node p = root.get_firstChild(); p; p = p.get_nextSibling())
- if (p.get_nodeType() == DOM::Node::ELEMENT_NODE && p.get_nodeName() == "entry")
+ if (p.get_nodeType() == DOM::Node::ELEMENT_NODE && p.get_nodeName() == "include")
+ {
+ DOM::Element el = p;
+ assert(el);
+ if (el.hasAttribute("href"))
+ {
+ // WARNING: this may result into an infinite loop!
+ std::string href = el.getAttribute("href");
+ std::string newBase = getURIBase(href);
+ std::string newName = getURIName(href);
+ if (newBase != "") load(newName, newBase);
+ else load(newName, base);
+ }
+ else
+ logger.warning("Dictionary: include statement with no href attribute (ignored)");
+ }
+ else if (p.get_nodeType() == DOM::Node::ELEMENT_NODE && p.get_nodeName() == "entry")
{
DOM::Element el = p;
assert(el);
std::string name = el.getAttribute("name");
if (entries.find(name) != entries.end())
- cerr << "WARNING: entry `" << name << "' is being redefined" << endl;
+ logger.info("Dictionary: `" + name + "' is being redefined");
Entry entry;
{
entry.value = el.getAttribute("val");
if (entry.cls == MACRO)
- cerr << "WARNING: `" << name << "' has a specified value, but is classified as macro" << endl;
+ logger.warning("Dictionary: `" + name + "' has a specified value, but is classified as macro");
}
if (el.hasAttribute("pattern"))
{
if (entry.cls != MACRO)
- cerr << "WARNING: `" << name << "' has a specified pattern, but is not classified as macro" << endl;
+ logger.warning("Dictionary: `" + name + "' has a specified pattern, but is not classified as macro");
std::string pattern = el.getAttribute("pattern");
if (pattern == "{}")
entry.pattern = tokenizer.tokenize(pattern);
}
+#if 0
if (el.hasAttribute("infix"))
{
std::istringstream is(el.getAttribute("infix"));
if (!el.hasAttribute("prefix")) entry.prefix = postfix;
}
}
+#endif
if (el.hasAttribute("limits"))
{
if (el.hasAttribute("delimiter"))
{
if (entry.cls != OPERATOR && !entry.embellishment)
- cerr << "WARNING: `" << name << "' delimiter ignored for non-operator" << endl;
+ logger.warning("Dictionary: `" + name + "' delimiter ignored for non-operator");
std::istringstream is(el.getAttribute("delimiter"));
unsigned delimiter;
if (el.hasAttribute("table"))
{
if (entry.cls != MACRO)
- cerr << "WARNING: `" << name << "' table ignored for non-macro" << endl;
-
+ logger.warning("Dictionary: `" + name + "' table ignored for non-macro");
+
std::istringstream is(el.getAttribute("table"));
unsigned table;
is >> table;
// AND the next argument is not a parameter
return i + 1 < pattern.size() && pattern[i + 1].category != TToken::PARAMETER;
}
+
+bool
+TDictionary::Entry::lastDelimiter(unsigned i) const
+{
+ assert(i < pattern.size());
+ assert(pattern[i].category != TToken::PARAMETER);
+ // a token is the last delimiter if it is the last token
+ // of the pattern or if the next token is a parameter)
+ return i + 1 == pattern.size() || pattern[i + 1].category == TToken::PARAMETER;
+}
+
+unsigned
+TDictionary::Entry::previousParam(unsigned i) const
+{
+ // this method return the position in the pattern of the
+ // parameter placed in a position preceding i.
+ // If no preceding i parameter present, the method return
+ // pattern.size().
+ // To know the position of the last parameter, call this
+ // method with i == pattern.size()
+ unsigned j = i - 1;
+
+ while (pattern[j].category != TToken::PARAMETER)
+ {
+ if (j) j--;
+ else return pattern.size();
+ }
+ return j;
+}