/*
Craftbook
Copyright (C) 2010 Lymia <lymiahugs@gmail.com>
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 3 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, see <http://www.gnu.org/licenses/>.
*/
package com.sk89q.craftbook.mech.ic.custom;
import com.sk89q.craftbook.mech.ic.plc.PlcLang;
import java.io.*;
import java.util.HashMap;
import static com.sk89q.craftbook.mech.ic.custom.CustomICSym.*;
public class CustomICLoader {
public static void load(String source, CustomICAccepter dest, HashMap<String,
PlcLang> languages) throws CustomICException {
try {
BufferedReader r;
try {
r = new BufferedReader(new FileReader(source));
} catch (IOException e) {
throw new CustomICException("could not read " + source, e);
}
CustomICScanner s = new CustomICScanner(r);
Type type = null;
Name name = null;
int state = 0;
while (true) {
Symbol y = s.next();
if (y == null) {
if (state != 0) throw new CustomICException("unexpected of file");
else return;
}
switch (state) {
case 0:
if (y.symbol == SYM_TYPE) {
type = (Type) y.value;
PlcLang l = languages.get(type.language);
if (l == null)
throw new CustomICException("invalid ic language: " + type.language + " (" + y.line +
":" + y.col + ")");
state = 1;
} else
throw new CustomICException("unexpected token: " + y.value + " (" + y.line + ":" + y.col
+ ")");
break;
case 1:
if (y.symbol == SYM_NAME) {
name = (Name) y.value;
state = 2;
} else
throw new CustomICException("unexpected token: " + y.value + " (" + y.line + ":" + y.col
+ ")");
break;
case 2:
switch (y.symbol) {
case SYM_PROG:
PlcLang l = languages.get(type.language);
if (l == null) throw new CustomICException("internal error: invalid ic language");
CustomICBase cic = new CustomICBase(l, name.title, (String) y.value);
dest.registerIC(name.icName, cic, type.type);
state = 0;
break;
case SYM_FILE:
try {
l = languages.get(type.language);
if (l == null) throw new CustomICException("internal error: invalid ic language");
DataInputStream in = new DataInputStream(new FileInputStream((String) y.value));
byte[] data = new byte[(int) new File((String) y.value).length()];
in.readFully(data);
cic = new CustomICBase(l, name.title, new String(data, "UTF-8"));
dest.registerIC(name.icName, cic, type.type);
state = 0;
} catch (IOException e) {
throw new CustomICException("Failed to read referenced file.", e);
}
break;
default:
throw new CustomICException("unexpected token: " + y.value + " (" + y.line + ":" + y
.col + ")");
}
break;
default:
throw new CustomICException("internal error: unknown state");
}
}
} catch (UnknownTokenException e) {
throw new CustomICException("unknown token at (" + e.line + ":" + e.column + ")", e);
} catch (CustomICException e) {
throw e;
} catch (Throwable t) {
throw new CustomICException("unknown error: " + t.getClass().getName() + " (" + t.getMessage() + ")", t);
}
}
}