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/* -*- 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 mutex.cc
//cflags: -I.. $(EXPAT_CFLAGS) $(PTHREAD_CFLAGS)
//libs: $(EXPAT_LIBS) $(PTHREAD_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*/
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