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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */
/***************************************************************************
* macroheaderparser.cc
*
* Wed Jul 22 08:42:23 CEST 2009
* Copyright 2009 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 "macroheaderparser.h"
#include <stdio.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 "debug.h"
#include "configuration.h"
#include "exception.h"
void MacroHeaderParser::error(const char* fmt, ...)
{
PRACRO_ERR_LOG(macro, "Error in MacroHeaderParser: ");
{
va_list argp;
va_start(argp, fmt);
PRACRO_ERR_LOG_VA(macro, fmt, argp);
va_end(argp);
fprintf(stderr, "\n");
}
{
char *p;
va_list argp;
va_start(argp, fmt);
if(vasprintf(&p, fmt, argp) != -1) {
throw Exception("Error in MacroHeaderParser: " + std::string(p));
free(p);
}
va_end(argp);
}
}
MacroHeaderParser::MacroHeaderParser(std::string macrofile)
{
m = NULL;
file = macrofile;
PRACRO_DEBUG(macro, "Using macro file: %s\n", macrofile.c_str());
fd = open(macrofile.c_str(), O_RDONLY);
if(fd == -1) error("Could not open file %s", macrofile.c_str());
}
MacroHeaderParser::~MacroHeaderParser()
{
if(fd != -1) close(fd);
if(m) delete m;
}
void MacroHeaderParser::startTag(std::string name, std::map< std::string, std::string> attributes)
{
if(m) return;
if(name == "macro") {
m = new Macro();
m->attributes = attributes;
} else {
throw Exception("Missing root tag 'macro' - found '" + name + "'");
}
}
int MacroHeaderParser::readData(char *data, size_t size)
{
if(m) return 0; // If m is allocated, it means that we have parsed the macro
// tag, and can dismiss the rest of the document.
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 MacroHeaderParser::parseError(const char *buf, size_t len, std::string error, int lineno)
{
if(m) return; // Ignore "unclosed token" errors when the macro tag has been parsed.
PRACRO_ERR_LOG(macro, "MacroHeaderParser[%s] error at line %d: %s\n", file.c_str(), lineno, error.c_str());
PRACRO_ERR_LOG(macro, "\tBuffer %u bytes: [", len);
if(fwrite(buf, len, 1, stderr) != len) {}
PRACRO_ERR_LOG(macro, "]\n");
char *slineno;
if(asprintf(&slineno, " at line %d\n", lineno) != -1) {
throw Exception(error + slineno);
free(slineno);
}
}
Macro *MacroHeaderParser::getMacro()
{
return m;
}
#ifdef TEST_MACROHEADERPARSER
#define XMLFILE "/tmp/test_macroheaderparser.xml"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <stdio.h>
#include <memory.h>
static char xml[] =
"<?xml version='1.0' encoding='UTF-8'?>\n"
"<macro name=\"testmacro\" version=\"1.0\">\n"
" <sometag/>\n"
" <someothertag/>\n"
"</macro>"
;
static char xml_nonmacro[] =
"<?xml version='1.0' encoding='UTF-8'?>\n"
"<dims name=\"testmacro\" version=\"1.0\">\n"
" <sometag/>\n"
" <someothertag/>\n"
"</dims>"
;
static char xml_fail[] =
"<?xml version='1.0' encoding='UTF-8'?>\n"
"<macro name\"testmacro\" version=\"1.0\">\n"
" <sometag/>\n"
" <someothertag/>\n"
"</macro>"
;
int main()
{
FILE *fp = fopen(XMLFILE, "w");
if(!fp) {
printf("Could not write to %s\n", XMLFILE);
return 1;
}
fprintf(fp, xml);
fclose(fp);
{
// Test parsing of correct macro xml data.
MacroHeaderParser parser(XMLFILE);
try {
parser.parse();
} catch(Exception &e) {
printf("Failed to parse: %s\n", e.what());
return 1;
}
}
fp = fopen(XMLFILE, "w");
if(!fp) {
printf("Could not write to %s\n", XMLFILE);
return 1;
}
fprintf(fp, xml_nonmacro);
fclose(fp);
// Test parsing of correct xml data, but not macro (should throw an exception).
{
MacroHeaderParser parser(XMLFILE);
try {
parser.parse();
} catch(Exception &e) {
printf("Failed to parse: %s\n", e.what());
goto onandon;
}
return 1;
}
onandon:
fp = fopen(XMLFILE, "w");
if(!fp) {
printf("Could not write to %s\n", XMLFILE);
return 1;
}
fprintf(fp, xml_fail);
fclose(fp);
// Test parsing of invalid xml data (should throw an exception).
{
MacroHeaderParser parser(XMLFILE);
try {
parser.parse();
} catch(Exception &e) {
printf("Failed to parse: %s\n", e.what());
goto yetonandon;
}
return 1;
}
yetonandon:
unlink(XMLFILE);
return 0;
}
#endif/*TEST_MACROHEADERPARSER*/
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