From ed9e290b441a6486c576c2e2e4baa69fa0f3ed37 Mon Sep 17 00:00:00 2001
From: deva <deva>
Date: Tue, 2 Aug 2011 08:00:20 +0000
Subject: New 'open course' feature.

---
 server/src/courseparser.cc | 178 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 178 insertions(+)
 create mode 100644 server/src/courseparser.cc

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

diff --git a/server/src/courseparser.cc b/server/src/courseparser.cc
new file mode 100644
index 0000000..af78ca1
--- /dev/null
+++ b/server/src/courseparser.cc
@@ -0,0 +1,178 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set et sw=2 ts=2: */
+/***************************************************************************
+ *            courseparser.cc
+ *
+ *  Tue Jun 28 10:52:41 CEST 2011
+ *  Copyright 2011 Bent Bisballe Nyeng
+ *  deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ *  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 "courseparser.h"
+
+// For assert
+#include <assert.h>
+
+// For open and friends
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+// For vprintf and friends
+#include <stdarg.h>
+
+#include <errno.h>
+#include <string.h>
+
+#include <stdio.h>
+
+#include "configuration.h"
+#include "debug.h"
+#include "exception.h"
+
+void CourseParser::error(const char* fmt, ...)
+{
+  va_list argp;
+  char *p;
+  va_start(argp, fmt);
+  vasprintf(&p, fmt, argp);
+  va_end(argp);
+  ERR_LOG(course, "Error in CourseParser: %s\n", p);
+  throw Exception(std::string("Error in CourseParser: ") + p);
+  free(p);
+}
+
+CourseParser::CourseParser(std::string coursefile)
+{
+  state = C_UNDEFINED;
+  c = new Course();
+
+  file = coursefile;
+
+  DEBUG(course, "Using course file: %s\n", file.c_str());
+
+  fd = open(file.c_str(), O_RDONLY);
+  if(fd == -1) error("Could not open file %s", file.c_str());
+}
+
+CourseParser::~CourseParser()
+{
+  if(fd != -1) close(fd);
+  delete c;
+}
+
+void CourseParser::characterData(std::string &data)
+{
+}
+
+void CourseParser::startTag(std::string name, attributes_t &attr)
+{
+  if(name == "course") {
+    if(state != C_UNDEFINED) error("Course found not a root node.");
+    state = C_COURSE;
+
+    assert(c); // A Course has not yet been allocated, cannot create course!
+
+    if(attr.find("name") != attr.end()) c->name = attr["name"];
+    if(attr.find("title") != attr.end()) c->title = attr["title"];
+    if(attr.find("version") != attr.end()) c->version = attr["version"];
+
+    return;
+  }
+
+  if(name == "template") {
+    if(state != C_COURSE) error("template found outside course.");
+    state = C_TEMPLATE;
+
+    assert(c); // A Course has not yet been allocated, cannot create template!
+    
+    Template t;
+
+    if(attr.find("name") != attr.end()) t.name = attr["name"];
+    if(attr.find("title") != attr.end()) t.title = attr["title"];
+
+    c->templates.push_back(t);
+
+    return;
+  }
+
+  error("Unknown/illegal tag: %s", name.c_str());
+}
+
+void CourseParser::endTag(std::string name)
+{
+  if(name == "course") state = C_UNDEFINED;
+  if(name == "template") state = C_COURSE;
+}
+
+int CourseParser::readData(char *data, size_t size)
+{
+  if(fd == -1) {
+    ERR_LOG(course, "Invalid file descriptor.\n");
+    return 0;
+  }
+  ssize_t r = read(fd, data, size);
+  if(r == -1) {
+    ERR_LOG(course, "Could not read...%s\n", strerror(errno));
+    return 0;
+  }
+  return r;
+}
+
+void CourseParser::parseError(const char *buf, size_t len, std::string error,
+                                int lineno)
+{
+  fprintf(stderr, "CourseParser[%s] error at line %d: %s\n",
+          file.c_str(), lineno, error.c_str());
+  fprintf(stderr, "\tBuffer %u bytes: [", len);
+  if(fwrite(buf, len, 1, stderr) != len) {}
+  fprintf(stderr, "]\n");
+  fflush(stderr);
+
+  char *slineno;
+  if(asprintf(&slineno, " at line %d\n", lineno) != -1) {
+    throw Exception(error + slineno);
+    free(slineno);
+  }
+}
+
+Course *CourseParser::getCourse()
+{
+  return c;
+}
+
+#ifdef TEST_COURSEPARSER
+//deps: saxparser.cc debug.cc log.cc exception.cc
+//cflags: -I.. $(EXPAT_CFLAGS)
+//libs: $(EXPAT_LIBS)
+#include "test.h"
+
+TEST_BEGIN;
+
+CourseParser p("../xml/courses/test.xml");
+p.parse();
+
+Course *c = p.getCourse();
+TEST_NOTEQUAL(c, NULL, "Got one?");
+
+TEST_END;
+
+#endif/*TEST_COURSEPARSER*/
-- 
cgit v1.2.3