/// <summary>
/// Default constructor that takes a <seealso cref="TextReader"/>. </summary>
public MappingCharFilter(NormalizeCharMap normMap, TextReader @in) : base(@in)
{
//LUCENENET support to reset the reader.
_input = GetBufferedReader(@in);
_input.Mark(BufferedCharFilter.defaultCharBufferSize);
buffer.Reset(_input);
//buffer.Reset(@in);
map = normMap.map;
cachedRootArcs = normMap.cachedRootArcs;
if (map != null)
{
fstReader = map.BytesReader;
}
else
{
fstReader = null;
}
}
public void Test_Reset_IOException()
{
int[]
expected = new int[] { '1', '2', '3', '4', '5', '6', '7', '8',
'9', '0', -1 };
br = new BufferedCharFilter(new StringReader("1234567890"), 9);
br.Mark(9);
for (int i = 0; i < 11; i++)
{
assertEquals(expected[i], br.Read());
}
try
{
br.Reset();
fail("should throw IOException");
}
#pragma warning disable 168
catch (IOException e)
#pragma warning restore 168
{
// Expected
}
for (int i = 0; i < 11; i++)
{
assertEquals(-1, br.Read());
}
br = new BufferedCharFilter(new StringReader("1234567890"));
br.Mark(10);
for (int i = 0; i < 10; i++)
{
assertEquals(expected[i], br.Read());
}
br.Reset();
for (int i = 0; i < 11; i++)
{
assertEquals(expected[i], br.Read());
}
}
public void Test_Read_CII_Exception()
{
br = new BufferedCharFilter(new StringReader(testString));
char[] nullCharArray = null;
char[] charArray = testString.toCharArray();
try
{
br.Read(nullCharArray, -1, -1);
fail("should throw IndexOutOfBoundsException");
}
#pragma warning disable 168
catch (ArgumentOutOfRangeException e)
#pragma warning restore 168
{
// expected
}
try
{
br.Read(nullCharArray, -1, 0);
fail("should throw IndexOutOfBoundsException");
}
#pragma warning disable 168
catch (ArgumentOutOfRangeException e)
#pragma warning restore 168
{
// expected
}
try
{
br.Read(nullCharArray, 0, -1);
fail("should throw NullPointerException");
}
#pragma warning disable 168
catch (NullReferenceException e)
#pragma warning restore 168
{
// expected
}
try
{
br.Read(nullCharArray, 0, 0);
fail("should throw NullPointerException");
}
#pragma warning disable 168
catch (NullReferenceException e)
#pragma warning restore 168
{
// expected
}
try
{
br.Read(nullCharArray, 0, 1);
fail("should throw NullPointerException");
}
#pragma warning disable 168
catch (NullReferenceException e)
#pragma warning restore 168
{
// expected
}
try
{
br.Read(charArray, -1, -1);
fail("should throw IndexOutOfBoundsException");
}
#pragma warning disable 168
catch (ArgumentOutOfRangeException e)
#pragma warning restore 168
{
// expected
}
try
{
br.Read(charArray, -1, 0);
fail("should throw IndexOutOfBoundsException");
}
#pragma warning disable 168
catch (ArgumentOutOfRangeException e)
#pragma warning restore 168
{
// expected
}
br.Read(charArray, 0, 0);
br.Read(charArray, 0, charArray.Length);
br.Read(charArray, charArray.Length, 0);
try
{
br.Read(charArray, charArray.Length + 1, 0);
fail("should throw IndexOutOfBoundsException");
}
#pragma warning disable 168
catch (ArgumentOutOfRangeException e)
#pragma warning restore 168
{
//expected
}
try
{
br.Read(charArray, charArray.Length + 1, 1);
fail("should throw IndexOutOfBoundsException");
}
#pragma warning disable 168
catch (ArgumentOutOfRangeException e)
#pragma warning restore 168
{
//expected
}
br.Dispose();
try
{
br.Read(nullCharArray, -1, -1);
fail("should throw IOException");
}
#pragma warning disable 168
catch (IOException e)
#pragma warning restore 168
{
// expected
}
try
{
br.Read(charArray, -1, 0);
fail("should throw IOException");
}
#pragma warning disable 168
catch (IOException e)
#pragma warning restore 168
{
// expected
}
try
{
br.Read(charArray, 0, -1);
fail("should throw IOException");
}
#pragma warning disable 168
catch (IOException e)
#pragma warning restore 168
{
// expected
}
}
public void Test_ReadCII()
{
char[] ca = new char[2];
BufferedCharFilter toRet = new BufferedCharFilter(new StreamReader(
new MemoryStream(new byte[0])));
/* Null buffer should throw NPE even when len == 0 */
try
{
toRet.Read(null, 1, 0);
fail("null buffer reading zero bytes should throw NPE");
}
#pragma warning disable 168
catch (NullReferenceException e)
#pragma warning restore 168
{
//expected
}
try
{
toRet.Dispose();
}
catch (IOException e)
{
fail("unexpected 1: " + e);
}
try
{
toRet.Read(null, 1, 0);
fail("null buffer reading zero bytes on closed stream should throw IOException");
}
#pragma warning disable 168
catch (IOException e)
#pragma warning restore 168
{
//expected
}
/* Closed reader should throw IOException reading zero bytes */
try
{
toRet.Read(ca, 0, 0);
fail("Reading zero bytes on a closed reader should not work");
}
#pragma warning disable 168
catch (IOException e)
#pragma warning restore 168
{
// expected
}
/*
* Closed reader should throw IOException in preference to index out of
* bounds
*/
try
{
// Read should throw IOException before
// ArrayIndexOutOfBoundException
toRet.Read(ca, 1, 5);
fail("IOException should have been thrown");
}
#pragma warning disable 168
catch (IOException e)
#pragma warning restore 168
{
// expected
}
// Test to ensure that a drained stream returns 0 at EOF
toRet = new BufferedCharFilter(new StreamReader(
new MemoryStream(new byte[2])));
try
{
assertEquals("Emptying the reader should return two bytes", 2,
toRet.Read(ca, 0, 2));
// LUCENENET specific: end of stream should be 0 in .NET
assertEquals("EOF on a reader should be 0", 0, toRet.Read(ca, 0,
2));
//assertEquals("EOF on a reader should be -1", -1, toRet.Read(ca, 0,
// 2));
assertEquals("Reading zero bytes at EOF should work", 0, toRet
.Read(ca, 0, 0));
}
catch (IOException ex)
{
fail("Unexpected IOException : " + ex.ToString());
}
// Test for method int java.io.BufferedReader.read(char [], int, int)
try
{
char[] buf = new char[testString.Length];
br = new BufferedCharFilter(new StringReader(testString));
br.Read(buf, 50, 500);
assertTrue("Chars read improperly", new string(buf, 50, 500)
.Equals(testString.Substring(0, 500 - 0), StringComparison.Ordinal));
}
#pragma warning disable 168
catch (IOException e)
#pragma warning restore 168
{
fail("Exception during read test");
}
BufferedCharFilter bufin = new BufferedCharFilter(new ReaderAnonymousInnerClassHelper());
//BufferedCharFilter bufin = new BufferedCharFilter(new Reader() {
// int size = 2, pos = 0;
//char[] contents = new char[size];
//public int read()
//{
// if (pos >= size)
// throw new IOException("Read past end of data");
// return contents[pos++];
// }
// public int read(char[] buf, int off, int len) throws IOException
//{
// if (pos >= size)
// throw new IOException("Read past end of data");
//int toRead = len;
// if (toRead > (size - pos))
// toRead = size - pos;
// System.arraycopy(contents, pos, buf, off, toRead);
// pos += toRead;
// return toRead;
// }
// public boolean ready() throws IOException
//{
// return size - pos > 0;
//}
//public void close()
//{
//}
// });
try
{
bufin.Read();
int result = bufin.Read(new char[2], 0, 2);
assertTrue("Incorrect result: " + result, result == 1);
}
catch (IOException e)
{
fail("Unexpected: " + e);
}
//regression for HARMONY-831
try
{
new BufferedCharFilter(new StringReader(""), 9).Read(new char[] { }, 7, 0);
fail("should throw IndexOutOfBoundsException");
}
#pragma warning disable 168
catch (ArgumentOutOfRangeException e)
#pragma warning restore 168
{
}
// Regression for HARMONY-54
char[] ch = { };
BufferedCharFilter reader = new BufferedCharFilter(new StringReader(new string(ch)));
try
{
// Check exception thrown when the reader is open.
reader.Read(null, 1, 0);
fail("Assert 0: NullPointerException expected");
}
#pragma warning disable 168
catch (NullReferenceException e)
#pragma warning restore 168
{
// Expected
}
// Now check IOException is thrown in preference to
// NullPointerexception when the reader is closed.
reader.Dispose();
try
{
reader.Read(null, 1, 0);
fail("Assert 1: IOException expected");
}
#pragma warning disable 168
catch (IOException e)
#pragma warning restore 168
{
// Expected
}
try
{
// And check that the IOException is thrown before
// ArrayIndexOutOfBoundException
reader.Read(ch, 0, 42);
fail("Assert 2: IOException expected");
}
#pragma warning disable 168
catch (IOException e)
#pragma warning restore 168
{
// expected
}
}
public void Test_IsMarkSupported()
{
// Test for method boolean java.io.BufferedReader.markSupported()
br = new BufferedCharFilter(new StringReader(testString));
assertTrue("markSupported returned false", br.IsMarkSupported);
}
public void Test_MarkI()
{
// Test for method void java.io.BufferedReader.mark(int)
char[] buf = null;
br = new BufferedCharFilter(new StringReader(testString));
br.Skip(500);
br.Mark(1000);
br.Skip(250);
br.Reset();
buf = new char[testString.Length];
br.Read(buf, 0, 500);
assertTrue("Failed to set mark properly", testString.Substring(500,
1000 - 500).Equals(new string(buf, 0, 500), StringComparison.Ordinal));
try
{
br = new BufferedCharFilter(new StringReader(testString), 800);
br.Skip(500);
br.Mark(250);
br.Read(buf, 0, 1000);
br.Reset();
fail("Failed to invalidate mark properly");
}
#pragma warning disable 168
catch (IOException x)
#pragma warning restore 168
{
// Expected
}
char[] chars = new char[256];
for (int i = 0; i < 256; i++)
{
chars[i] = (char)i;
}
BufferedCharFilter @in = new BufferedCharFilter(new StringReader(new String(
chars)), 12);
@in.Skip(6);
@in.Mark(14);
@in.Read(new char[14], 0, 14);
@in.Reset();
assertTrue("Wrong chars", @in.Read() == (char)6 &&
@in.Read() == (char)7);
@in = new BufferedCharFilter(new StringReader(new String(chars)), 12);
@in.Skip(6);
@in.Mark(8);
@in.Skip(7);
@in.Reset();
assertTrue("Wrong chars 2", @in.Read() == (char)6 &&
@in.Read() == (char)7);
BufferedCharFilter br2 = new BufferedCharFilter(new StringReader("01234"), 2);
br2.Mark(3);
char[] carray = new char[3];
int result = br2.read(carray);
assertEquals(3, result);
assertEquals("Assert 0:", '0', carray[0]);
assertEquals("Assert 1:", '1', carray[1]);
assertEquals("Assert 2:", '2', carray[2]);
assertEquals("Assert 3:", '3', br2.Read());
br2 = new BufferedCharFilter(new StringReader("01234"), 2);
br2.Mark(3);
carray = new char[4];
result = br2.read(carray);
assertEquals("Assert 4:", 4, result);
assertEquals("Assert 5:", '0', carray[0]);
assertEquals("Assert 6:", '1', carray[1]);
assertEquals("Assert 7:", '2', carray[2]);
assertEquals("Assert 8:", '3', carray[3]);
assertEquals("Assert 9:", '4', br2.Read());
assertEquals("Assert 10:", -1, br2.Read());
BufferedCharFilter reader = new BufferedCharFilter(new StringReader("01234"));
reader.Mark(int.MaxValue);
reader.Read();
reader.Dispose();
}
