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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* templateparser.cc
*
* Mon May 12 08:36:24 CEST 2008
* Copyright 2008 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 "templateparser.h"
#include "configuration.h"
#include "debug.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 "exception.h"
void TemplateParser::error(const char* fmt, ...)
{
va_list argp;
char *p;
va_start(argp, fmt);
vasprintf(&p, fmt, argp);
va_end(argp);
PRACRO_ERR_LOG(macro, "Error in TemplateParser: %s\n", p);
throw Exception(std::string("Error in TemplateParser: ") + p);
free(p);
}
TemplateParser::TemplateParser(std::string templatefile)
{
state = UNDEFINED;
t = new Template();
current_macro = NULL;
file = templatefile;
PRACRO_DEBUG(macro, "Using template 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());
}
TemplateParser::~TemplateParser()
{
if(fd != -1) close(fd);
delete t;
}
void TemplateParser::characterData(std::string &data)
{
}
void TemplateParser::startTag(std::string name, std::map< std::string, std::string> attributes)
{
// Enable macro parsing
if(name == "template") {
if(state != UNDEFINED) error("Template found not a root node.");
state = TEMPLATE;
assert(t); // A Template has not yet been allocated, cannot create template!
t->attributes = attributes;
return;
}
// Create macro and enable parsing of queries, maps and widgets
if(name == "macro" || name == "header") {
if(state != TEMPLATE) error("macro found outside template.");
state = MACRO;
assert(t); // A Template has not yet been allocated, cannot create macro!
Macro m;
m.attributes = attributes;
m.isHeader = name == "header";
t->macros.push_back(m);
current_macro = &(t->macros.back());
return;
}
error("Unknown/illegal tag: %s", name.c_str());
}
void TemplateParser::endTag(std::string name)
{
if(name == "template") state = UNDEFINED;
if(name == "macro" || name == "header") {
current_macro = NULL;
state = TEMPLATE;
}
}
int TemplateParser::readData(char *data, size_t size)
{
if(fd == -1) {
PRACRO_ERR_LOG(macro, "Invalid file descriptor.\n");
return 0;
}
ssize_t r = read(fd, data, size);
if(r == -1) {
PRACRO_ERR_LOG(macro, "Could not read...%s\n", strerror(errno));
return 0;
}
return r;
}
void TemplateParser::parseError(char *buf, size_t len, std::string error, int lineno)
{
fprintf(stderr, "TemplateParser[%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);
}
Template *TemplateParser::getTemplate()
{
return t;
}
#ifdef TEST_TEMPLATEPARSER
void print_attributes(std::string prefix,
std::map< std::string, std::string > &att)
{
std::map< std::string, std::string >::iterator i = att.begin();
while(i != att.end()) {
printf("%s %s = \"%s\"\n", prefix.c_str(), (*i).first.c_str(), (*i).second.c_str());
i++;
}
}
int main()
{
Conf::xml_basedir = "../xml/";
try {
TemplateParser parser("../xml/templates/example.xml");
parser.parse();
Template *t = parser.getTemplate();
printf("\t[Template]:\n");
print_attributes("\t\t-", t->attributes);
printf("\t\t[Macros]:\n");
std::vector< Macro >::iterator i = t->macros.begin();
while(i != t->macros.end()) {
printf("\t\t\t[Macro]:\n");
print_attributes("\t\t\t\t-", (*i).attributes);
std::vector< Query >::iterator qi = (*i).queries.begin();
while(qi != (*i).queries.end()) {
printf("\t\t\t\t[Query]:\n");
print_attributes("\t\t\t\t\t-", (*qi).attributes);
qi++;
}
std::vector< Map >::iterator mi = (*i).maps.begin();
while(mi != (*i).maps.end()) {
printf("\t\t\t\t[Map]:\n");
print_attributes("\t\t\t\t\t-", (*mi).attributes);
mi++;
}
i++;
}
} catch(Exception &e) {
printf("ERROR: %s\n", e.what());
return 1;
}
return 0;
}
#endif/*TEST_TEMPLATEPARSER*/
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