From a3cb015e6b69821062306981924a43a5487f3b5d Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Mon, 24 Sep 2007 12:47:16 +0000
Subject: Server now parses XML and handles include.

---
 server/src/macro_parser.cc | 170 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 170 insertions(+)
 create mode 100644 server/src/macro_parser.cc

(limited to 'server/src/macro_parser.cc')

diff --git a/server/src/macro_parser.cc b/server/src/macro_parser.cc
new file mode 100644
index 0000000..c317482
--- /dev/null
+++ b/server/src/macro_parser.cc
@@ -0,0 +1,170 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ *            macro_parser.cc
+ *
+ *  Mon Sep 24 10:49:55 CEST 2007
+ *  Copyright 2007 Bent Bisballe Nyeng, Lars Bisballe Jensen and Peter Skaarup
+ *  deva@aasimon.org, elsenator@gmail.com and piparum@piparum.dk
+ ****************************************************************************/
+
+/*
+ *  This file is part of Pracro.
+ *
+ *  Pracro 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.
+ *
+ *  Pracro 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 Pracro; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
+ */
+#include "macro_parser.h"
+
+// For XML
+#include <config.h>
+
+// For open, read and close
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <stdio.h>
+#include <string.h>
+#include <expat.h>
+
+#include <string>
+#include <map>
+
+class MacroParser {
+public:
+  Macro *macro;
+  std::vector< Widget* > stack;
+  bool done;
+};
+
+static void start_hndl(void *p, const char *el, const char **attr)
+{
+  MacroParser *parser = (MacroParser*)XML_GetUserData(p);
+
+  printf("Start tag [%s]\n", el);
+
+  // 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));
+  }
+
+  // Do something reasonable with them...
+
+  if(name == "include") {
+
+    Macro inc;
+    parse_macro(attributes["name"], inc);
+
+    WidgetList::iterator w = inc.widgets.front().widgets.begin();
+    while(w != inc.widgets.front().widgets.end()) {
+      parser->stack.back()->widgets.push_back(*w);
+      w++;
+    }
+
+    return; // Don't do further parsing of this tag.
+  }
+
+  Widget widget;
+  widget.type = name;
+
+  Widget *wp;
+
+  if(parser->stack.size() > 0) {// We only pushback the child if there is a parent.
+    parser->stack.back()->widgets.push_back(widget);
+    wp = &parser->stack.back()->widgets.back();
+  } else {
+    parser->macro->widgets.push_back(widget);
+    wp = &parser->macro->widgets.back();
+  }
+  parser->stack.push_back(wp);
+
+  std::map< std::string, std::string >::iterator i = attributes.begin();
+  while(i != attributes.end()) {
+    WidgetProperty prop;
+    prop.name = i->first;
+    prop.value = i->second;
+
+    wp->properties.push_back(prop);
+
+    i++;
+  }
+}
+
+static void end_hndl(void *p, const char *el)
+{
+  MacroParser *parser = (MacroParser*)XML_GetUserData(p);
+ 
+  printf("End tag [%s]\n", el);
+
+  if(std::string("include") != el) parser->stack.pop_back();
+
+  if(!strcmp(el, "macro")) parser->done = true;
+}
+
+void parse_macro(std::string name, Macro &macro)
+{
+
+  XML_Parser p = XML_ParserCreate(NULL);
+  if (! p) {
+    fprintf(stderr, "Couldn't allocate memory for parser\n");
+    // throw Exception(...);
+    return;
+  }
+
+  MacroParser parser;
+  parser.macro = &macro;
+  parser.done = false;
+
+  XML_SetUserData(p, &parser);
+  XML_UseParserAsHandlerArg(p);
+  XML_SetElementHandler(p, start_hndl, end_hndl);
+
+  std::string macrofile = std::string(XML) + "/" + name + ".xml";
+  int fd = open(macrofile.c_str(), O_RDONLY);
+
+  if(fd == -1) {
+    printf("Cannot open file \"%s\"...", macrofile.c_str());
+    printf("failed!\n");
+    return;
+  }
+
+  while(!parser.done) {
+    char buf[32];
+    int len;
+
+    memset(buf, 0, sizeof(buf));
+    len = read(fd, buf, sizeof(buf) - 1);
+
+    parser.done = len == 0;
+
+    if (! XML_Parse(p, buf, len, parser.done)) {
+      fprintf(stderr, "Parse error at line %d:\n%s\n",
+	      XML_GetCurrentLineNumber(p),
+	      XML_ErrorString(XML_GetErrorCode(p)));
+      // throw Exception(...);
+      return;
+    }
+  }
+
+  //  printf("%d requests\n", transaction.requests.size());
+}
-- 
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