DrumKit parser. Internal drumkit now used in events. This is the first milestone.

1 files changed, 110 insertions, 0 deletions

diff --git a/src/saxparser.cc b/src/saxparser.cc
new file mode 100644
index 0000000..89f426b
--- /dev/null
+++ b/src/saxparser.cc
@@ -0,0 +1,110 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            saxparser.cc
+ *
+ *  Tue Jul 22 16:26:22 CEST 2008
+ *  Copyright 2008 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  This file is part of DrumGizmo.
+ *
+ *  DrumGizmo is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  DrumGizmo 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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with DrumGizmo; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "saxparser.h"
+
+static void character_hndl(void *p, const XML_Char *s, int len)
+{
+  SAXParser *parser = (SAXParser*)XML_GetUserData(p);
+  std::string chars;
+  chars.append(s, len);
+  parser->characterData(chars);
+}
+
+static void start_hndl(void *p, const char *el, const char **attr)
+{
+  SAXParser *parser = (SAXParser*)XML_GetUserData(p);
+
+  // Convert to comfy C++ values...
+  std::string name = el;
+  std::map< std::string, std::string > attributes;
+
+  while(*attr) {
+    std::string at_name = *attr;
+    attr++;
+    std::string at_value = *attr;
+    attr++;
+
+    attributes.insert(make_pair(at_name, at_value));
+  }
+
+  parser->startTag(name, attributes);
+}
+
+static void end_hndl(void *p, const char *el)
+{
+  SAXParser *parser = (SAXParser*)XML_GetUserData(p);
+  std::string name = el;
+  parser->endTag(name);
+}
+
+
+SAXParser::SAXParser()
+{
+  p = XML_ParserCreate(NULL);
+  if(!p) {
+    fprintf(stderr, "Couldn't allocate memory for parser\n");
+    // throw Exception(...);
+    return;
+  }
+
+  XML_SetUserData(p, this);
+  XML_UseParserAsHandlerArg(p);
+  XML_SetElementHandler(p, start_hndl, end_hndl);
+  XML_SetCharacterDataHandler(p, character_hndl);
+}
+
+SAXParser::~SAXParser()
+{
+  XML_ParserFree(p);
+}
+
+int SAXParser::parse()
+{
+  char buf[32];
+  int len;
+  
+  do {
+    len = readData(buf, sizeof(buf) - 1);
+    if (! XML_Parse(p, buf, len, len == 0)) {
+      parseError(buf, len, XML_ErrorString(XML_GetErrorCode(p)), (int)XML_GetCurrentLineNumber(p));
+      return 1;
+    }
+
+    memset(buf, 0, sizeof(buf));
+  } while(len);
+
+  return 0;
+}
+
+void SAXParser::parseError(char *buf, size_t len, std::string error, int lineno)
+{
+  fprintf(stderr, "SAXParser error at line %d: %s\n", lineno, error.c_str());
+  fprintf(stderr, "\tBuffer %u bytes: [", len);
+  if(fwrite(buf, len, 1, stderr) != len) {}
+  fprintf(stderr, "]\n");
+  fflush(stderr);
+}