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/*** /
This file is part of Golly, a Game of Life Simulator.
Copyright (C) 2009 Andrew Trevorrow and Tomas Rokicki.
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Web site: http://sourceforge.net/projects/golly
Authors: rokicki@gmail.com andrew@trevorrow.com
/ ***/
#include "util.h"
#include <stdio.h>
#include <stdlib.h>
/**
* For now error just uses stderr.
*/
class baselifeerrors : public lifeerrors {
public:
virtual void fatal(const char *s) {
fprintf(stderr, "%s\n", s) ;
exit(10) ;
}
virtual void warning(const char *s) {
fprintf(stderr, "%s\n", s) ;
}
virtual void status(const char *s) {
fprintf(stderr, "%s\n", s) ;
}
virtual void beginprogress(const char *) {
aborted = false ;
}
virtual bool abortprogress(double, const char *) {
return false ;
}
virtual void endprogress() {
// do nothing
}
virtual const char *getuserrules() {
return "" ;
}
virtual const char *getrulesdir() {
return "" ;
}
} ;
baselifeerrors baselifeerrors ;
lifeerrors *errorhandler = &baselifeerrors ;
void lifeerrors::seterrorhandler(lifeerrors *o) {
if (o == 0)
errorhandler = &baselifeerrors ;
else
errorhandler = o ;
}
void lifefatal(const char *s) {
errorhandler->fatal(s) ;
}
void lifewarning(const char *s) {
errorhandler->warning(s) ;
}
void lifestatus(const char *s) {
errorhandler->status(s) ;
}
void lifebeginprogress(const char *dlgtitle) {
errorhandler->beginprogress(dlgtitle) ;
}
bool lifeabortprogress(double fracdone, const char *newmsg) {
return errorhandler->aborted |=
errorhandler->abortprogress(fracdone, newmsg) ;
}
bool isaborted() {
return errorhandler->aborted ;
}
void lifeendprogress() {
errorhandler->endprogress() ;
}
const char *lifegetuserrules() {
return errorhandler->getuserrules() ;
}
const char *lifegetrulesdir() {
return errorhandler->getrulesdir() ;
}
static FILE *f ;
FILE *getdebugfile() {
if (f == 0)
f = fopen("trace.txt", "w") ;
return f ;
}
/**
* Manage reading lines from a FILE* without worrying about
* line terminates. Note that the fgets() routine does not
* insert any line termination characters at all.
*/
linereader::linereader(FILE *f) {
setfile(f) ;
}
void linereader::setfile(FILE *f) {
fp = f ;
lastchar = 0 ;
closeonfree = 0 ; // AKT: avoid crash on Linux
}
void linereader::setcloseonfree() {
closeonfree = 1 ;
}
int linereader::close() {
if (fp) {
return fclose(fp) ;
fp = 0 ;
}
return 0 ;
}
linereader::~linereader() {
if (closeonfree)
close() ;
}
const int LF = 10 ;
const int CR = 13 ;
char *linereader::fgets(char *buf, int maxlen) {
int i = 0 ;
for (;;) {
if (i+1 >= maxlen) {
buf[i] = 0 ;
return buf ;
}
int c = getc(fp) ;
switch (c) {
case EOF:
if (i == 0)
return 0 ;
buf[i] = 0 ;
return buf ;
case LF:
if (lastchar != CR) {
lastchar = LF ;
buf[i] = 0 ;
return buf ;
}
break ;
case CR:
lastchar = CR ;
buf[i] = 0 ;
return buf ;
default:
lastchar = c ;
buf[i++] = (char)c ;
break ;
}
}
}
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