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Re-factor loading profile in the streams so that I can reuse that load elsewhere. handy function.

This commit is contained in:
Terence Parr 2014-06-28 10:46:25 -07:00 committed by Sam Harwell
parent a07d523c81
commit 31aa7bf5c9
2 changed files with 41 additions and 28 deletions
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31
runtime/Java/src/org/antlr/v4/runtime/ANTLRFileStream.java
View File

@ -29,11 +29,9 @@
*/
package org.antlr.v4.runtime;
import java.io.File;
import java.io.FileInputStream;
import org.antlr.v4.runtime.misc.Utils;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
/**
* This is an {@link ANTLRInputStream} that is loaded from a file all at once
@ -54,29 +52,8 @@ public class ANTLRFileStream extends ANTLRInputStream {
public void load(String fileName, String encoding)
throws IOException
{
if ( fileName==null ) {
return;
}
File f = new File(fileName);
int size = (int)f.length();
InputStreamReader isr;
FileInputStream fis = new FileInputStream(fileName);
if ( encoding!=null ) {
isr = new InputStreamReader(fis, encoding);
}
else {
isr = new InputStreamReader(fis);
}
try {
data = new char[size];
n = isr.read(data);
if (n < data.length) {
data = Arrays.copyOf(data, n);
}
}
finally {
isr.close();
}
data = Utils.readFile(fileName, encoding);
this.n = data.length;
}
@Override

38
runtime/Java/src/org/antlr/v4/runtime/misc/Utils.java
View File

@ -30,13 +30,17 @@
package org.antlr.v4.runtime.misc;
import java.awt.*;
import java.awt.Window;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Writer;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
@ -104,6 +108,38 @@ public class Utils {
}
}
public static char[] readFile(String fileName) throws IOException {
return readFile(fileName, null);
}
public static char[] readFile(String fileName, String encoding) throws IOException {
if ( fileName==null ) {
return null;
}
File f = new File(fileName);
int size = (int)f.length();
InputStreamReader isr;
FileInputStream fis = new FileInputStream(fileName);
if ( encoding!=null ) {
isr = new InputStreamReader(fis, encoding);
}
else {
isr = new InputStreamReader(fis);
}
char[] data = null;
try {
data = new char[size];
int n = isr.read(data);
if (n < data.length) {
data = Arrays.copyOf(data, n);
}
}
finally {
isr.close();
}
return data;
}
public static void waitForClose(final Window window) throws InterruptedException {
final Object lock = new Object();