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- /*
- * DO NOT EDIT. THIS FILE IS GENERATED FROM nsIUnicharInputStream.idl
- */
-
- #ifndef __gen_nsIUnicharInputStream_h__
- #define __gen_nsIUnicharInputStream_h__
-
-
- #ifndef __gen_nsISupports_h__
- #include "nsISupports.h"
- #endif
-
- /* For IDL files that don't want to include root IDL files. */
- #ifndef NS_NO_VTABLE
- #define NS_NO_VTABLE
- #endif
- class nsIUnicharInputStream; /* forward declaration */
-
- /**
- * The signature of the writer function passed to ReadSegments. This
- * is the "consumer" of data that gets read from the stream's buffer.
- *
- * @param aInStream stream being read
- * @param aClosure opaque parameter passed to ReadSegments
- * @param aFromSegment pointer to memory owned by the input stream
- * @param aToOffset amount already read (since ReadSegments was called)
- * @param aCount length of fromSegment
- * @param aWriteCount number of bytes read
- *
- * Implementers should return the following:
- *
- * @return NS_OK and (*aWriteCount > 0) if consumed some data
- * @return <any-error> if not interested in consuming any data
- *
- * Errors are never passed to the caller of ReadSegments.
- *
- * NOTE: returning NS_OK and (*aWriteCount = 0) has undefined behavior.
- */
- typedef NS_CALLBACK(nsWriteUnicharSegmentFun)(nsIUnicharInputStream *aInStream,
- void *aClosure,
- const PRUnichar *aFromSegment,
- PRUint32 aToOffset,
- PRUint32 aCount,
- PRUint32 *aWriteCount);
-
- /* starting interface: nsIUnicharInputStream */
- #define NS_IUNICHARINPUTSTREAM_IID_STR "d5e3bd80-6723-4b92-b0c9-22f6162fd94f"
-
- #define NS_IUNICHARINPUTSTREAM_IID \
- {0xd5e3bd80, 0x6723, 0x4b92, \
- { 0xb0, 0xc9, 0x22, 0xf6, 0x16, 0x2f, 0xd9, 0x4f }}
-
- class NS_NO_VTABLE nsIUnicharInputStream : public nsISupports {
- public:
-
- NS_DEFINE_STATIC_IID_ACCESSOR(NS_IUNICHARINPUTSTREAM_IID)
-
- /**
- * Abstract unicode character input stream
- * @see nsIInputStream
- */
- /**
- * Reads into a caller-provided character array.
- *
- * @return The number of characters that were successfully read. May be less
- * than aCount, even if there is more data in the input stream.
- * A return value of 0 means EOF.
- *
- * @note To read more than 2^32 characters, call this method multiple times.
- */
- /* [noscript] unsigned long read ([array, size_is (aCount)] in PRUnichar aBuf, in unsigned long aCount); */
- NS_IMETHOD Read(PRUnichar *aBuf, PRUint32 aCount, PRUint32 *_retval) = 0;
-
- /**
- * Low-level read method that has access to the stream's underlying buffer.
- * The writer function may be called multiple times for segmented buffers.
- * ReadSegments is expected to keep calling the writer until either there is
- * nothing left to read or the writer returns an error. ReadSegments should
- * not call the writer with zero characters to consume.
- *
- * @param aWriter the "consumer" of the data to be read
- * @param aClosure opaque parameter passed to writer
- * @param aCount the maximum number of characters to be read
- *
- * @return number of characters read (may be less than aCount)
- * @return 0 if reached end of file (or if aWriter refused to consume data)
- *
- * @throws NS_BASE_STREAM_WOULD_BLOCK if reading from the input stream would
- * block the calling thread (non-blocking mode only)
- * @throws <other-error> on failure
- *
- * NOTE: this function may be unimplemented if a stream has no underlying
- * buffer
- */
- /* [noscript] unsigned long readSegments (in nsWriteUnicharSegmentFun aWriter, in voidPtr aClosure, in unsigned long aCount); */
- NS_IMETHOD ReadSegments(nsWriteUnicharSegmentFun aWriter, void * aClosure, PRUint32 aCount, PRUint32 *_retval) = 0;
-
- /**
- * Read into a string object.
- * @param aCount The number of characters that should be read
- * @return The number of characters that were read.
- */
- /* unsigned long readString (in unsigned long aCount, out AString aString); */
- NS_IMETHOD ReadString(PRUint32 aCount, nsAString & aString, PRUint32 *_retval) = 0;
-
- /**
- * Close the stream and free associated resources. This also closes the
- * underlying stream, if any.
- */
- /* void close (); */
- NS_IMETHOD Close(void) = 0;
-
- };
-
- /* Use this macro when declaring classes that implement this interface. */
- #define NS_DECL_NSIUNICHARINPUTSTREAM \
- NS_IMETHOD Read(PRUnichar *aBuf, PRUint32 aCount, PRUint32 *_retval); \
- NS_IMETHOD ReadSegments(nsWriteUnicharSegmentFun aWriter, void * aClosure, PRUint32 aCount, PRUint32 *_retval); \
- NS_IMETHOD ReadString(PRUint32 aCount, nsAString & aString, PRUint32 *_retval); \
- NS_IMETHOD Close(void);
-
- /* Use this macro to declare functions that forward the behavior of this interface to another object. */
- #define NS_FORWARD_NSIUNICHARINPUTSTREAM(_to) \
- NS_IMETHOD Read(PRUnichar *aBuf, PRUint32 aCount, PRUint32 *_retval) { return _to Read(aBuf, aCount, _retval); } \
- NS_IMETHOD ReadSegments(nsWriteUnicharSegmentFun aWriter, void * aClosure, PRUint32 aCount, PRUint32 *_retval) { return _to ReadSegments(aWriter, aClosure, aCount, _retval); } \
- NS_IMETHOD ReadString(PRUint32 aCount, nsAString & aString, PRUint32 *_retval) { return _to ReadString(aCount, aString, _retval); } \
- NS_IMETHOD Close(void) { return _to Close(); }
-
- /* Use this macro to declare functions that forward the behavior of this interface to another object in a safe way. */
- #define NS_FORWARD_SAFE_NSIUNICHARINPUTSTREAM(_to) \
- NS_IMETHOD Read(PRUnichar *aBuf, PRUint32 aCount, PRUint32 *_retval) { return !_to ? NS_ERROR_NULL_POINTER : _to->Read(aBuf, aCount, _retval); } \
- NS_IMETHOD ReadSegments(nsWriteUnicharSegmentFun aWriter, void * aClosure, PRUint32 aCount, PRUint32 *_retval) { return !_to ? NS_ERROR_NULL_POINTER : _to->ReadSegments(aWriter, aClosure, aCount, _retval); } \
- NS_IMETHOD ReadString(PRUint32 aCount, nsAString & aString, PRUint32 *_retval) { return !_to ? NS_ERROR_NULL_POINTER : _to->ReadString(aCount, aString, _retval); } \
- NS_IMETHOD Close(void) { return !_to ? NS_ERROR_NULL_POINTER : _to->Close(); }
-
- #if 0
- /* Use the code below as a template for the implementation class for this interface. */
-
- /* Header file */
- class nsUnicharInputStream : public nsIUnicharInputStream
- {
- public:
- NS_DECL_ISUPPORTS
- NS_DECL_NSIUNICHARINPUTSTREAM
-
- nsUnicharInputStream();
-
- private:
- ~nsUnicharInputStream();
-
- protected:
- /* additional members */
- };
-
- /* Implementation file */
- NS_IMPL_ISUPPORTS1(nsUnicharInputStream, nsIUnicharInputStream)
-
- nsUnicharInputStream::nsUnicharInputStream()
- {
- /* member initializers and constructor code */
- }
-
- nsUnicharInputStream::~nsUnicharInputStream()
- {
- /* destructor code */
- }
-
- /* [noscript] unsigned long read ([array, size_is (aCount)] in PRUnichar aBuf, in unsigned long aCount); */
- NS_IMETHODIMP nsUnicharInputStream::Read(PRUnichar *aBuf, PRUint32 aCount, PRUint32 *_retval)
- {
- return NS_ERROR_NOT_IMPLEMENTED;
- }
-
- /* [noscript] unsigned long readSegments (in nsWriteUnicharSegmentFun aWriter, in voidPtr aClosure, in unsigned long aCount); */
- NS_IMETHODIMP nsUnicharInputStream::ReadSegments(nsWriteUnicharSegmentFun aWriter, void * aClosure, PRUint32 aCount, PRUint32 *_retval)
- {
- return NS_ERROR_NOT_IMPLEMENTED;
- }
-
- /* unsigned long readString (in unsigned long aCount, out AString aString); */
- NS_IMETHODIMP nsUnicharInputStream::ReadString(PRUint32 aCount, nsAString & aString, PRUint32 *_retval)
- {
- return NS_ERROR_NOT_IMPLEMENTED;
- }
-
- /* void close (); */
- NS_IMETHODIMP nsUnicharInputStream::Close()
- {
- return NS_ERROR_NOT_IMPLEMENTED;
- }
-
- /* End of implementation class template. */
- #endif
-
- #include "nsStringFwd.h"
- class nsIInputStream;
- /**
- * Create a nsIUnicharInputStream that wraps up a string. Data is fed
- * from the string out until the done. When this object is destroyed
- * it destroys the string by calling |delete| on the pointer if
- * aTakeOwnership is set. If aTakeOwnership is not set, you must
- * ensure that the string outlives the stream!
- */
- extern NS_COM nsresult
- NS_NewStringUnicharInputStream(nsIUnicharInputStream** aInstancePtrResult,
- const nsAString* aString,
- PRBool aTakeOwnership);
- /**
- * Create a new nsUnicharInputStream that provides a converter for the
- * byte input stream aStreamToWrap. If no converter can be found then
- * nsnull is returned and the error code is set to
- * NS_INPUTSTREAM_NO_CONVERTER.
- */
- extern NS_COM nsresult
- NS_NewUTF8ConverterStream(nsIUnicharInputStream** aInstancePtrResult,
- nsIInputStream* aStreamToWrap,
- PRInt32 aBufferSize = 0);
-
- #endif /* __gen_nsIUnicharInputStream_h__ */
-