public static object OpenIO([NotNull]BlockParam/*!*/ block, RubyClass/*!*/ self, [Optional]MutableString initialString, [Optional]MutableString mode) {
MutableStringStream stream = new MutableStringStream(initialString ?? MutableString.CreateBinary());
string ioMode = (mode != null) ? mode.ConvertToString() : "rb+";
RubyIO io = new StringIO(self.Context, stream, ioMode);
object result;
block.Yield(io, out result);
if (!io.Closed) {
io.Close();
}
return result;
}
public static void FileControl(StringIO /*!*/ self)
{
throw new NotImplementedError();
}
public static bool Sync(StringIO/*!*/ self) {
// nop
return true;
}
public static StringIO/*!*/ SetBinaryMode(StringIO/*!*/ self) {
// nop
return self;
}
public static RubyArray/*!*/ ReadLines(StringIO/*!*/ self, [DefaultProtocol]MutableString separator) {
var content = self.GetReadableContent();
RubyArray result = new RubyArray();
// no dynamic call, doesn't modify $_ scope variable:
MutableString line;
int position = self._position;
while ((line = ReadLine(content, separator, ref position)) != null) {
result.Add(line);
self._lineNumber++;
}
self._position = position;
return result;
}
public static MutableString Gets(RubyScope/*!*/ scope, StringIO/*!*/ self, [DefaultProtocol]MutableString separator) {
var content = self.GetReadableContent();
int position = self._position;
MutableString result = ReadLine(content, separator, ref position);
self._position = position;
scope.GetInnerMostClosureScope().LastInputLine = result;
self._lineNumber++;
return result;
}
public static int ReadChar(StringIO/*!*/ self) {
var content = self.GetReadableContent();
int length = content.GetByteCount();
if (self._position >= length) {
throw new EOFError("end of file reached");
}
return content.GetByte(self._position++);
}
public static MutableString/*!*/ SystemRead(StringIO/*!*/ self, DynamicNull bytes, [DefaultProtocol, NotNull]MutableString buffer) {
return Read(self, buffer, true);
}
public static StringIO /*!*/ Reopen(StringIO /*!*/ self)
{
self.SetContent(MutableString.CreateBinary());
self._mode = IOMode.ReadWrite;
return(self);
}
public static StringIO /*!*/ Flush(StringIO /*!*/ self)
{
// nop
return(self);
}
public static bool IsConsole(StringIO /*!*/ self)
{
// nop
return(false);
}
public static bool SetSync(StringIO /*!*/ self, bool value)
{
// nop
return(value);
}
public static bool Sync(StringIO /*!*/ self)
{
// nop
return(true);
}
public static int FSync(StringIO /*!*/ self)
{
// nop
return(0);
}
public static object GetDescriptor(StringIO /*!*/ self)
{
// nop
return(null);
}
public static int Write(ConversionStorage<MutableString>/*!*/ tosConversion, StringIO/*!*/ self, object obj) {
return Write(self, Protocols.ConvertToString(tosConversion, obj));
}
public static MutableString Read(StringIO/*!*/ self, [DefaultProtocol]int count, [DefaultProtocol, Optional, NotNull]MutableString buffer) {
var content = self.GetReadableContent();
if (count < 0) {
throw RubyExceptions.CreateArgumentError("negative length -1 given");
}
if (buffer != null) {
buffer.Clear();
}
int length = content.GetByteCount();
if (self._position >= length) {
return null;
}
if (buffer == null) {
buffer = MutableString.CreateBinary();
}
int bytesRead = Math.Min(count, length - self._position);
buffer.Append(content, self._position, bytesRead).TaintBy(content);
self._position += bytesRead;
return buffer;
}
public static StringIO /*!*/ Reopen(RubyContext /*!*/ context, [NotNull] StringIO /*!*/ self, [NotNull] StringIO /*!*/ other)
{
self.SetContent(other._content);
self._mode = other._mode;
self._lineNumber = other._lineNumber;
self._position = other._position;
// TODO: this seems to be MRI bug
// Shouldn't StringIO's taint be always same as the underlying string's taint?
context.TaintObjectBy(self, other);
return(self);
}
public static object GetByte(StringIO/*!*/ self) {
var content = self.GetReadableContent();
if (self._position >= content.GetByteCount()) {
return null;
}
return ScriptingRuntimeHelpers.Int32ToObject(content.GetByte(self._position++));
}
public static StringIO /*!*/ Reopen(StringIO /*!*/ self, [NotNull] MutableString /*!*/ content)
{
return(Reopen(self, content, null));
}
public static void SetLineNo(StringIO/*!*/ self, [DefaultProtocol]int value) {
self._lineNumber = value;
}
public static void Close(StringIO /*!*/ self)
{
self.GetContent();
self.Close();
}
public static MutableString/*!*/ ReadLine(RubyScope/*!*/ scope, StringIO/*!*/ self, [DefaultProtocol]MutableString separator) {
// no dynamic call, modifies $_ scope variable:
MutableString result = Gets(scope, self, separator);
if (result == null) {
throw new EOFError("end of file reached");
}
return result;
}
public static void CloseRead(StringIO /*!*/ self)
{
self.GetReadableContent();
self._mode = self._mode.CloseRead();
}
public static object EachLine(BlockParam block, StringIO/*!*/ self, [DefaultProtocol]MutableString separator) {
// TODO: improve MSOps.EachLine
var content = self.GetReadableContent();
var result = MutableStringOps.EachLine(block, content, separator, self._position);
return ReferenceEquals(result, content) ? self : result;
}
public static void CloseWrite(StringIO /*!*/ self)
{
self.GetWritableContent();
self._mode = self._mode.CloseWrite();
}
public static object GetDescriptor(StringIO/*!*/ self) {
// nop
return null;
}
public static bool IsClosed(StringIO /*!*/ self)
{
return(self._mode.IsClosed());
}
public static bool IsConsole(StringIO/*!*/ self) {
// nop
return false;
}
public static bool IsClosedRead(StringIO /*!*/ self)
{
return(!self._mode.CanRead());
}
public static int Write(StringIO/*!*/ self, [NotNull]MutableString/*!*/ value) {
var content = self.GetWritableContent();
int length = content.GetByteCount();
var bytesWritten = value.GetByteCount();
int pos;
if ((self._mode & IOMode.WriteAppends) != 0) {
pos = length;
} else {
pos = self._position;
}
try {
content.WriteBytes(pos, value, 0, bytesWritten);
} catch (InvalidOperationException) {
throw RubyExceptions.CreateIOError("not modifiable string");
}
content.TaintBy(value);
self._position = pos + bytesWritten;
return bytesWritten;
}
public static bool IsClosedWrite(StringIO /*!*/ self)
{
return(!self._mode.CanWrite());
}
public static MutableString/*!*/ Read(StringIO/*!*/ self, MutableString buffer, bool eofError) {
var content = self.GetReadableContent();
int start = self._position;
int length = content.GetByteCount();
if (buffer != null) {
buffer.Clear();
} else {
buffer = MutableString.CreateBinary();
}
if (start < length) {
self._position = length;
buffer.Append(content, start, length - start).TaintBy(content);
} else if (eofError) {
throw new EOFError("end of file reached");
}
return buffer;
}
public static int GetLength(StringIO /*!*/ self)
{
return(self.GetContent().GetByteCount());
}
public static MutableString/*!*/ SystemRead(StringIO/*!*/ self, [Optional]DynamicNull bytes) {
return Read(self, null, true);
}
public static int GetPosition(StringIO /*!*/ self)
{
return(self._position);
}
public static MutableString/*!*/ SystemRead(StringIO/*!*/ self, [DefaultProtocol]int bytes, [DefaultProtocol, Optional, NotNull]MutableString buffer) {
var result = Read(self, bytes, buffer);
if (result == null) {
throw new EOFError("end of file reached");
}
return result;
}
public static void Pos(StringIO /*!*/ self, [DefaultProtocol] int pos)
{
self.SetPosition(pos);
}
public static void SetPreviousByte(StringIO/*!*/ self, [DefaultProtocol]int b) {
// MRI: this checks if the IO is readable although it actually modifies the string:
MutableString content = self.GetReadableContent();
int pos = self._position - 1;
if (pos >= 0) {
int length = content.GetByteCount();
try {
if (pos >= length) {
content.Append(0, pos - length);
content.Append(unchecked((byte)b));
} else {
content.SetByte(pos, unchecked((byte)b));
}
self._position = pos;
} catch (InvalidOperationException) {
throw RubyExceptions.CreateIOError("not modifiable string");
}
}
}
public static bool Eof(StringIO /*!*/ self)
{
var context = self.GetReadableContent();
return(self._position >= context.GetByteCount());
}
public static int GetLineNo(StringIO/*!*/ self) {
return self._lineNumber;
}
public static MutableString /*!*/ GetString(StringIO /*!*/ self)
{
return(self._content);
}
public static MutableString Gets(RubyScope/*!*/ scope, StringIO/*!*/ self) {
return Gets(scope, self, scope.RubyContext.InputSeparator);
}
public static MutableString /*!*/ SetString(StringIO /*!*/ self, [DefaultProtocol, NotNull] MutableString /*!*/ str)
{
self.SetContent(str);
return(str);
}
public static MutableString/*!*/ ReadLine(RubyScope/*!*/ scope, StringIO/*!*/ self) {
return ReadLine(scope, self, scope.RubyContext.InputSeparator);
}
public static int Write(ConversionStorage <MutableString> /*!*/ tosConversion, StringIO /*!*/ self, object obj)
{
return(Write(self, Protocols.ConvertToString(tosConversion, obj)));
}
public static RubyArray/*!*/ ReadLines(RubyContext/*!*/ context, StringIO/*!*/ self) {
return ReadLines(self, context.InputSeparator);
}
public static MutableString /*!*/ SystemRead(StringIO /*!*/ self, [Optional] DynamicNull bytes)
{
return(Read(self, null, true));
}
public static object EachLine(RubyContext/*!*/ context, BlockParam block, StringIO/*!*/ self) {
return EachLine(block, self, context.InputSeparator);
}
public static MutableString /*!*/ SystemRead(StringIO /*!*/ self, DynamicNull bytes, [DefaultProtocol, NotNull] MutableString buffer)
{
return(Read(self, buffer, true));
}
public static object EachByte(BlockParam block, StringIO/*!*/ self) {
MutableString content;
int pos;
while ((pos = self._position) < (content = self.GetReadableContent()).GetByteCount()) {
if (block == null) {
throw RubyExceptions.NoBlockGiven();
}
self._position++;
object result;
if (block.Yield(ScriptingRuntimeHelpers.Int32ToObject(content.GetByte(pos)), out result)) {
return result;
}
}
return null;
}
public static int GetLineNo(StringIO /*!*/ self)
{
return(self._lineNumber);
}
public static void FileControl(StringIO/*!*/ self) {
throw new NotImplementedError();
}
public static void SetLineNo(StringIO /*!*/ self, [DefaultProtocol] int value)
{
self._lineNumber = value;
}
public static int FSync(StringIO/*!*/ self) {
// nop
return 0;
}
public static MutableString Gets(RubyScope /*!*/ scope, StringIO /*!*/ self)
{
return(Gets(scope, self, scope.RubyContext.InputSeparator));
}
public static bool SetSync(StringIO/*!*/ self, bool value) {
// nop
return value;
}
public static MutableString /*!*/ ReadLine(RubyScope /*!*/ scope, StringIO /*!*/ self)
{
return(ReadLine(scope, self, scope.RubyContext.InputSeparator));
}
public static StringIO/*!*/ Flush(StringIO/*!*/ self) {
// nop
return self;
}
public static StringIO /*!*/ SetBinaryMode(StringIO /*!*/ self)
{
// nop
return(self);
}