зеркало из https://github.com/mozilla/gecko-dev.git
adding stream converter code
This commit is contained in:
valeski%netscape.com
Родитель
40f2c7b9c9
Коммит
81f815e9aa
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@ -0,0 +1,33 @@
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#! gmake
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#
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# The contents of this file are subject to the Netscape Public License
|
||||||
|
# Version 1.0 (the "NPL"); you may not use this file except in
|
||||||
|
# compliance with the NPL. You may obtain a copy of the NPL at
|
||||||
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# http://www.mozilla.org/NPL/
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||||||
|
#
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||||||
|
# Software distributed under the NPL is distributed on an "AS IS" basis,
|
||||||
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# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
||||||
|
# for the specific language governing rights and limitations under the
|
||||||
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# NPL.
|
||||||
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#
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||||||
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# The Initial Developer of this code under the NPL is Netscape
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||||||
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# Communications Corporation. Portions created by Netscape are
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||||||
|
# Copyright (C) 1998 Netscape Communications Corporation. All Rights
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||||||
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# Reserved.
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||||||
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|
||||||
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DEPTH = ../..
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||||||
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topsrcdir = @top_srcdir@
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srcdir = @srcdir@
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VPATH = @srcdir@
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MODULE = streamconv
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include $(DEPTH)/config/autoconf.mk
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DIRS= \
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public \
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src \
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$(NULL)
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include $(topsrcdir)/config/rules.mk
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@ -0,0 +1,27 @@
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#!gmake
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||||||
|
#
|
||||||
|
# The contents of this file are subject to the Netscape Public License
|
||||||
|
# Version 1.0 (the "NPL"); you may not use this file except in
|
||||||
|
# compliance with the NPL. You may obtain a copy of the NPL at
|
||||||
|
# http://www.mozilla.org/NPL/
|
||||||
|
#
|
||||||
|
# Software distributed under the NPL is distributed on an "AS IS" basis,
|
||||||
|
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
||||||
|
# for the specific language governing rights and limitations under the
|
||||||
|
# NPL.
|
||||||
|
#
|
||||||
|
# The Initial Developer of this code under the NPL is Netscape
|
||||||
|
# Communications Corporation. Portions created by Netscape are
|
||||||
|
# Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
||||||
|
# Reserved.
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||||||
|
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||||||
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DEPTH = ..\..
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MODULE = streamconv
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DIRS= \
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public \
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src \
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$(NULL)
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include <$(DEPTH)\config\rules.mak>
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@ -0,0 +1,41 @@
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||||||
|
#!gmake
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||||||
|
#
|
||||||
|
# The contents of this file are subject to the Netscape Public License
|
||||||
|
# Version 1.0 (the "NPL"); you may not use this file except in
|
||||||
|
# compliance with the NPL. You may obtain a copy of the NPL at
|
||||||
|
# http://www.mozilla.org/NPL/
|
||||||
|
#
|
||||||
|
# Software distributed under the NPL is distributed on an "AS IS" basis,
|
||||||
|
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
||||||
|
# for the specific language governing rights and limitations under the
|
||||||
|
# NPL.
|
||||||
|
#
|
||||||
|
# The Initial Developer of this code under the NPL is Netscape
|
||||||
|
# Communications Corporation. Portions created by Netscape are
|
||||||
|
# Copyright (C) 1998 Netscape Communications Corporation. All Rights
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||||||
|
# Reserved.
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||||||
|
|
||||||
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DEPTH = ../../..
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topsrcdir = @top_srcdir@
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srcdir = @srcdir@
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VPATH = @srcdir@
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MODULE = streamconv
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XPIDL_MODULE = necko_stream_converter
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XPIDLSRCS = \
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nsIStreamConverter.idl \
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nsIStreamConverterService.idl \
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$(NULL)
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include $(DEPTH)/config/autoconf.mk
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include $(topsrcdir)/config/config.mk
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||||||
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# hack until necko lands
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||||||
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ifndef NECKO
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PUBLIC = $(DEPTH)/netwerk/dist/include
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endif
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|
||||||
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include $(topsrcdir)/config/rules.mk
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|
@ -0,0 +1,39 @@
|
||||||
|
#!gmake
|
||||||
|
#
|
||||||
|
# The contents of this file are subject to the Netscape Public License
|
||||||
|
# Version 1.0 (the "NPL"); you may not use this file except in
|
||||||
|
# compliance with the NPL. You may obtain a copy of the NPL at
|
||||||
|
# http://www.mozilla.org/NPL/
|
||||||
|
#
|
||||||
|
# Software distributed under the NPL is distributed on an "AS IS" basis,
|
||||||
|
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
||||||
|
# for the specific language governing rights and limitations under the
|
||||||
|
# NPL.
|
||||||
|
#
|
||||||
|
# The Initial Developer of this code under the NPL is Netscape
|
||||||
|
# Communications Corporation. Portions created by Netscape are
|
||||||
|
# Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
||||||
|
# Reserved.
|
||||||
|
|
||||||
|
MODULE = streamconv
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||||||
|
|
||||||
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DEPTH = ..\..\..
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||||||
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||||||
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// temporary, until we land:
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!ifndef NECKO
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include <$(DEPTH)/config/config.mak>
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PUBLIC = $(DEPTH)\netwerk\dist\include
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!endif
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XPIDLSRCS = \
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.\nsIStreamConverter.idl \
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.\nsIStreamConverterService.idl \
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$(NULL)
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include <$(DEPTH)/config/rules.mak>
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$(DEPTH)\netwerk\dist\include:
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-mkdir $(DEPTH)\netwerk\dist
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-mkdir $(DEPTH)\netwerk\dist\include
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@ -0,0 +1,50 @@
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#include "nsIStreamListener.idl"
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#include "nsIInputStream.idl"
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#include "nsIURI.idl"
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// There are three ways to use a stream converter:
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// 1. SYNCRONOUS. Stream to Stream.
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// You can supply the service with a stream of type X
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// and it will convert it to your desired output type and return
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// a converted stream to you.
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//
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// 2. ASYNCRONOUS. Stream to nsIStreamListener
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// You can supply the service with a stream of type X
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||||||
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// and it will convert it to your desired output type and return
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||||||
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// converted data to you via the nsIStreamListener you passed in
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||||||
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// by calling its nsIStreamListener::OnDataAvailable() method.
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||||||
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//
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||||||
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// 3. ASYNCRONOUS. nsIStreamListener to nsIStreamListener
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||||||
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// You can supply data directly to the service by calling it's
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||||||
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// nsIStreamListener::OnDataAvailable() method. It will then
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||||||
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// convert that data from type X to your desired output type and
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||||||
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// return converted data to you via the nsIStreamListener you passed
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||||||
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// in by calling its OnDataAvailable() method.
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||||||
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|
||||||
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[scriptable, uuid(46484B30-3BD2-11d3-A16C-0050041CAF44)]
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interface nsIStreamConverter : nsIStreamListener {
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// SYNCRONOUS VERSION
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// Converts aFromStream of type aFromType, to a resulting stream of type aToType.
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||||||
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// Use this when you have a stream as input.
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||||||
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nsIInputStream Convert(in nsIInputStream aFromStream,
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||||||
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in wstring aFromType,
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in wstring aToType);
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||||||
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|
||||||
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// ASYNCRONOUS VERSIONS
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||||||
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|
||||||
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// Converts aFromStream of type aFromType, to type aToType pushing the converted
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||||||
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// data out to the caller via aListener::OnDataAvailable().
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||||||
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void AsyncConvertStream(in nsIInputStream aFromStream,
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in wstring aFromType,
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in wstring aToType,
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||||||
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in nsIStreamListener aListener);
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||||||
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// Converts data arriving via the service's nsIStreamListener::OnDataAvailable() method
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// from type aFromType to aToType pushing the converted data out to the caller via
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// aListener::OnDataAvailable().
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||||||
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void AsyncConvertData(in wstring aFromType,
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in wstring aToType,
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||||||
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in nsIStreamListener aListener);
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};
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@ -0,0 +1,25 @@
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#include "nsIStreamConverter.idl"
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||||||
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||||||
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// The nsIStreamConverterService acts as a higher level stream converter factory
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||||||
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// responsible for locating and creating the appropriate stream converters in order
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||||||
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// to convert data from type X to type Z. It is responsible for any intermediary
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||||||
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// conversion required in order to get from X to Z, if direct conversion is not
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||||||
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// possible.
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||||||
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//
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||||||
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%{C++
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||||||
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|
||||||
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#define NS_STREAMCONVERTERSERVICE_CID \
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||||||
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{ /* 892FFEB0-3F80-11d3-A16C-0050041CAF44 */ \
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||||||
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0x892ffeb0, \
|
||||||
|
0x3f80, \
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||||||
|
0x11d3, \
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||||||
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{0xa1, 0x6c, 0x00, 0x50, 0x04, 0x1c, 0xaf, 0x44} \
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||||||
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}
|
||||||
|
|
||||||
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%}
|
||||||
|
|
||||||
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[scriptable, uuid(00362090-3B97-11d3-A16C-0050041CAF44)]
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||||||
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interface nsIStreamConverterService : nsIStreamConverter {
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||||||
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// no methods. only implements nsIStreamConverter
|
||||||
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};
|
||||||
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|
@ -0,0 +1,46 @@
|
||||||
|
# The contents of this file are subject to the Netscape Public License
|
||||||
|
# Version 1.0 (the "NPL"); you may not use this file except in
|
||||||
|
# compliance with the NPL. You may obtain a copy of the NPL at
|
||||||
|
# http://www.mozilla.org/NPL/
|
||||||
|
#
|
||||||
|
# Software distributed under the NPL is distributed on an "AS IS" basis,
|
||||||
|
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
||||||
|
# for the specific language governing rights and limitations under the
|
||||||
|
# NPL.
|
||||||
|
#
|
||||||
|
# The Initial Developer of this code under the NPL is Netscape
|
||||||
|
# Communications Corporation. Portions created by Netscape are
|
||||||
|
# Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
||||||
|
# Reserved.
|
||||||
|
|
||||||
|
DEPTH = ../../..
|
||||||
|
|
||||||
|
topsrcdir = @top_srcdir@
|
||||||
|
srcdir = @srcdir@
|
||||||
|
VPATH = @srcdir@
|
||||||
|
|
||||||
|
MODULE = streamconv
|
||||||
|
|
||||||
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LIBRARY_NAME = streamconv
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||||||
|
|
||||||
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IS_COMPONENT = 1
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|
|
||||||
|
include $(DEPTH)/config/autoconf.mk
|
||||||
|
|
||||||
|
CPPSRCS = \
|
||||||
|
nsStreamConverterService.cpp \
|
||||||
|
nsStreamConvServiceFactory.cpp \
|
||||||
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$(NULL)
|
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|
|
||||||
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include $(topsrcdir)/config/config.mk
|
||||||
|
|
||||||
|
REQUIRES = xpcom
|
||||||
|
|
||||||
|
# hack until necko lands
|
||||||
|
ifndef NECKO
|
||||||
|
PUBLIC = $(DEPTH)/netwerk/dist/include
|
||||||
|
endif
|
||||||
|
|
||||||
|
TARGET = $(LIBARY)
|
||||||
|
|
||||||
|
include $(topsrcdir)/config/rules.mk
|
||||||
|
|
@ -0,0 +1,56 @@
|
||||||
|
# The contents of this file are subject to the Netscape Public License
|
||||||
|
# Version 1.0 (the "NPL"); you may not use this file except in
|
||||||
|
# compliance with the NPL. You may obtain a copy of the NPL at
|
||||||
|
# http://www.mozilla.org/NPL/
|
||||||
|
#
|
||||||
|
# Software distributed under the NPL is distributed on an "AS IS" basis,
|
||||||
|
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
||||||
|
# for the specific language governing rights and limitations under the
|
||||||
|
# NPL.
|
||||||
|
#
|
||||||
|
# The Initial Developer of this code under the NPL is Netscape
|
||||||
|
# Communications Corporation. Portions created by Netscape are
|
||||||
|
# Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
||||||
|
# Reserved.
|
||||||
|
|
||||||
|
DEPTH = ..\..\..
|
||||||
|
|
||||||
|
// temporary, until we land:
|
||||||
|
!ifndef NECKO
|
||||||
|
include <$(DEPTH)/config/config.mak>
|
||||||
|
PUBLIC = $(DEPTH)\netwerk\dist\include
|
||||||
|
!endif
|
||||||
|
|
||||||
|
MODULE = streamconv
|
||||||
|
|
||||||
|
IS_COMPONENT=1
|
||||||
|
MAKE_OBJ_TYPE=DLL
|
||||||
|
DLLNAME=streamconv
|
||||||
|
DLL=.\$(OBJDIR)\$(DLLNAME).dll
|
||||||
|
|
||||||
|
LLIBS= $(LLIBS) \
|
||||||
|
$(DIST)\lib\xpcom.lib \
|
||||||
|
$(NULL)
|
||||||
|
|
||||||
|
LCFLAGS = -DWIN32_LEAN_AND_MEAN -D_IMPL_NS_NET
|
||||||
|
|
||||||
|
CPP_OBJS = \
|
||||||
|
.\$(OBJDIR)\nsStreamConverterService.obj \
|
||||||
|
.\$(OBJDIR)\nsStreamConvServiceFactory.obj \
|
||||||
|
$(NULL)
|
||||||
|
|
||||||
|
LOCAL_INCLUDES=-I.
|
||||||
|
|
||||||
|
INCLUDES = $(LOCAL_INCLUDES)
|
||||||
|
|
||||||
|
INCS = $(INCS) \
|
||||||
|
-I$(DEPTH)\dist\include \
|
||||||
|
$(NULL)
|
||||||
|
|
||||||
|
include <$(DEPTH)\config\rules.mak>
|
||||||
|
|
||||||
|
install:: $(DLL)
|
||||||
|
$(MAKE_INSTALL) $(DLL) $(DIST)\bin\components
|
||||||
|
|
||||||
|
clobber::
|
||||||
|
rm -f $(DIST)\lib\$(LIBRARY_NAME).lib
|
||||||
|
|
@ -0,0 +1,178 @@
|
||||||
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
||||||
|
*
|
||||||
|
* The contents of this file are subject to the Netscape Public License
|
||||||
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
||||||
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
||||||
|
* http://www.mozilla.org/NPL/
|
||||||
|
*
|
||||||
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
||||||
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
||||||
|
* for the specific language governing rights and limitations under the
|
||||||
|
* NPL.
|
||||||
|
*
|
||||||
|
* The Initial Developer of this code under the NPL is Netscape
|
||||||
|
* Communications Corporation. Portions created by Netscape are
|
||||||
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
||||||
|
* Reserved.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "nsCOMPtr.h"
|
||||||
|
#include "nscore.h"
|
||||||
|
#include "nsIStreamConverterService.h"
|
||||||
|
#include "nsStreamConverterService.h"
|
||||||
|
#include "nsStreamConvServiceFactory.h"
|
||||||
|
#include "nsIComponentManager.h"
|
||||||
|
#include "nsIServiceManager.h"
|
||||||
|
#include "nsXPComFactory.h"
|
||||||
|
|
||||||
|
static NS_DEFINE_IID(kIFactoryIID, NS_IFACTORY_IID);
|
||||||
|
static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
|
||||||
|
static NS_DEFINE_CID(kStreamConvServiceCID, NS_STREAMCONVERTERSERVICE_CID);
|
||||||
|
|
||||||
|
////////////////////////////////////////////////////////////////////////
|
||||||
|
|
||||||
|
nsStreamConvServiceFactory::nsStreamConvServiceFactory(const nsCID &aClass,
|
||||||
|
const char* className,
|
||||||
|
const char* progID)
|
||||||
|
: mClassID(aClass), mClassName(className), mProgID(progID)
|
||||||
|
{
|
||||||
|
NS_INIT_REFCNT();
|
||||||
|
}
|
||||||
|
|
||||||
|
nsStreamConvServiceFactory::~nsStreamConvServiceFactory()
|
||||||
|
{
|
||||||
|
NS_ASSERTION(mRefCnt == 0, "non-zero refcnt at destruction");
|
||||||
|
}
|
||||||
|
|
||||||
|
NS_IMETHODIMP
|
||||||
|
nsStreamConvServiceFactory::QueryInterface(const nsIID &aIID, void **aResult)
|
||||||
|
{
|
||||||
|
if (! aResult)
|
||||||
|
return NS_ERROR_NULL_POINTER;
|
||||||
|
|
||||||
|
// Always NULL result, in case of failure
|
||||||
|
*aResult = nsnull;
|
||||||
|
|
||||||
|
if (aIID.Equals(nsCOMTypeInfo<nsISupports>::GetIID())) {
|
||||||
|
*aResult = NS_STATIC_CAST(nsISupports*, this);
|
||||||
|
AddRef();
|
||||||
|
return NS_OK;
|
||||||
|
} else if (aIID.Equals(kIFactoryIID)) {
|
||||||
|
*aResult = NS_STATIC_CAST(nsIFactory*, this);
|
||||||
|
AddRef();
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
return NS_NOINTERFACE;
|
||||||
|
}
|
||||||
|
|
||||||
|
NS_IMPL_ADDREF(nsStreamConvServiceFactory);
|
||||||
|
NS_IMPL_RELEASE(nsStreamConvServiceFactory);
|
||||||
|
|
||||||
|
NS_IMETHODIMP
|
||||||
|
nsStreamConvServiceFactory::CreateInstance(nsISupports *aOuter,
|
||||||
|
const nsIID &aIID,
|
||||||
|
void **aResult)
|
||||||
|
{
|
||||||
|
if (! aResult)
|
||||||
|
return NS_ERROR_NULL_POINTER;
|
||||||
|
|
||||||
|
if (aOuter)
|
||||||
|
return NS_ERROR_NO_AGGREGATION;
|
||||||
|
|
||||||
|
*aResult = nsnull;
|
||||||
|
|
||||||
|
nsresult rv = NS_OK;
|
||||||
|
|
||||||
|
nsISupports *inst = nsnull;
|
||||||
|
if (mClassID.Equals(kStreamConvServiceCID)) {
|
||||||
|
nsStreamConverterService *service = new nsStreamConverterService();
|
||||||
|
if (!service) return NS_ERROR_OUT_OF_MEMORY;
|
||||||
|
rv = service->Init();
|
||||||
|
if (NS_FAILED(rv)) {
|
||||||
|
delete service;
|
||||||
|
return rv;
|
||||||
|
}
|
||||||
|
service->QueryInterface(nsCOMTypeInfo<nsISupports>::GetIID(), (void**)&inst);
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
return NS_ERROR_NO_INTERFACE;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!inst)
|
||||||
|
return NS_ERROR_OUT_OF_MEMORY;
|
||||||
|
NS_ADDREF(inst);
|
||||||
|
*aResult = inst;
|
||||||
|
NS_RELEASE(inst);
|
||||||
|
return rv;
|
||||||
|
}
|
||||||
|
|
||||||
|
nsresult nsStreamConvServiceFactory::LockFactory(PRBool aLock)
|
||||||
|
{
|
||||||
|
// Not implemented in simplest case.
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
////////////////////////////////////////////////////////////////////////
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
// return the proper factory to the caller
|
||||||
|
extern "C" PR_IMPLEMENT(nsresult)
|
||||||
|
NSGetFactory(nsISupports* aServMgr,
|
||||||
|
const nsCID &aClass,
|
||||||
|
const char *aClassName,
|
||||||
|
const char *aProgID,
|
||||||
|
nsIFactory **aFactory)
|
||||||
|
{
|
||||||
|
if (! aFactory)
|
||||||
|
return NS_ERROR_NULL_POINTER;
|
||||||
|
|
||||||
|
nsStreamConvServiceFactory* factory = new nsStreamConvServiceFactory(aClass, aClassName, aProgID);
|
||||||
|
if (factory == nsnull)
|
||||||
|
return NS_ERROR_OUT_OF_MEMORY;
|
||||||
|
|
||||||
|
NS_ADDREF(factory);
|
||||||
|
*aFactory = factory;
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
extern "C" PR_IMPLEMENT(nsresult)
|
||||||
|
NSRegisterSelf(nsISupports* aServMgr , const char* aPath)
|
||||||
|
{
|
||||||
|
nsresult rv;
|
||||||
|
|
||||||
|
nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
|
||||||
|
if (NS_FAILED(rv)) return rv;
|
||||||
|
|
||||||
|
NS_WITH_SERVICE(nsIComponentManager, compMgr, kComponentManagerCID, &rv);
|
||||||
|
if (NS_FAILED(rv)) return rv;
|
||||||
|
|
||||||
|
rv = compMgr->RegisterComponent(kStreamConvServiceCID,
|
||||||
|
"Stream Converter Service",
|
||||||
|
"component:||netscape|streamConverters",
|
||||||
|
aPath, PR_TRUE, PR_TRUE);
|
||||||
|
|
||||||
|
if (NS_FAILED(rv)) return rv;
|
||||||
|
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
extern "C" PR_IMPLEMENT(nsresult)
|
||||||
|
NSUnregisterSelf(nsISupports* aServMgr, const char* aPath)
|
||||||
|
{
|
||||||
|
nsresult rv;
|
||||||
|
|
||||||
|
nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
|
||||||
|
if (NS_FAILED(rv)) return rv;
|
||||||
|
|
||||||
|
NS_WITH_SERVICE(nsIComponentManager, compMgr, kComponentManagerCID, &rv);
|
||||||
|
if (NS_FAILED(rv)) return rv;
|
||||||
|
|
||||||
|
rv = compMgr->UnregisterComponent(kStreamConvServiceCID, aPath);
|
||||||
|
if (NS_FAILED(rv)) return rv;
|
||||||
|
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,44 @@
|
||||||
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
||||||
|
*
|
||||||
|
* The contents of this file are subject to the Netscape Public License
|
||||||
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
||||||
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
||||||
|
* http://www.mozilla.org/NPL/
|
||||||
|
*
|
||||||
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
||||||
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
||||||
|
* for the specific language governing rights and limitations under the
|
||||||
|
* NPL.
|
||||||
|
*
|
||||||
|
* The Initial Developer of this code under the NPL is Netscape
|
||||||
|
* Communications Corporation. Portions created by Netscape are
|
||||||
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
||||||
|
* Reserved.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "nsIFactory.h"
|
||||||
|
|
||||||
|
class nsStreamConvServiceFactory : public nsIFactory
|
||||||
|
{
|
||||||
|
public:
|
||||||
|
nsStreamConvServiceFactory(const nsCID &aClass, const char* className, const char* progID);
|
||||||
|
|
||||||
|
// nsISupports methods
|
||||||
|
NS_DECL_ISUPPORTS
|
||||||
|
|
||||||
|
// nsIFactory methods
|
||||||
|
NS_IMETHOD CreateInstance(nsISupports *aOuter,
|
||||||
|
const nsIID &aIID,
|
||||||
|
void **aResult);
|
||||||
|
|
||||||
|
NS_IMETHOD LockFactory(PRBool aLock);
|
||||||
|
|
||||||
|
protected:
|
||||||
|
virtual ~nsStreamConvServiceFactory();
|
||||||
|
|
||||||
|
protected:
|
||||||
|
nsCID mClassID;
|
||||||
|
const char* mClassName;
|
||||||
|
const char* mProgID;
|
||||||
|
};
|
||||||
|
|
||||||
|
|
@ -0,0 +1,328 @@
|
||||||
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
||||||
|
*
|
||||||
|
* The contents of this file are subject to the Netscape Public License
|
||||||
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
||||||
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
||||||
|
* http://www.mozilla.org/NPL/
|
||||||
|
*
|
||||||
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
||||||
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
||||||
|
* for the specific language governing rights and limitations under the
|
||||||
|
* NPL.
|
||||||
|
*
|
||||||
|
* The Initial Developer of this code under the NPL is Netscape
|
||||||
|
* Communications Corporation. Portions created by Netscape are
|
||||||
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
||||||
|
* Reserved.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "nsStreamConverterService.h"
|
||||||
|
#include "nsIServiceManager.h"
|
||||||
|
#include "nsString2.h"
|
||||||
|
#include "nsIAtom.h"
|
||||||
|
#include "nsDeque.h"
|
||||||
|
|
||||||
|
////////////////////////////////////////////////////////////
|
||||||
|
// nsISupports methods
|
||||||
|
NS_IMPL_ISUPPORTS(nsStreamConverterService, nsCOMTypeInfo<nsIStreamConverterService>::GetIID());
|
||||||
|
|
||||||
|
|
||||||
|
////////////////////////////////////////////////////////////
|
||||||
|
// nsIStreamConverterService methods
|
||||||
|
|
||||||
|
// Builds the graph represented as an adjacency list (and built up in
|
||||||
|
// memory using an nsHashtable and nsVoidArray combination).
|
||||||
|
//
|
||||||
|
// RegisterConverter takes the given PROGID and parses a single edge from it.
|
||||||
|
// An edge in this case is comprised of a FROM and TO MIME type combination. The
|
||||||
|
// edge is then inserted into the service's adjacency list.
|
||||||
|
// It then turns around and registers the PROGID and the converter with the service
|
||||||
|
// manager; the true registration mechanism.
|
||||||
|
//
|
||||||
|
// PROGID format:
|
||||||
|
// component://netscape/strmconv?from=text/html?to=text/plain
|
||||||
|
// XXX curently we only handle a single from and to combo, we should repeat the
|
||||||
|
// XXX registration process for any series of from-to combos.
|
||||||
|
// XXX can use nsTokenizer for this.
|
||||||
|
//
|
||||||
|
|
||||||
|
typedef struct _tableData {
|
||||||
|
nsHashKey *key;
|
||||||
|
nsString2 *keyString;
|
||||||
|
void *data;
|
||||||
|
} tableData;
|
||||||
|
|
||||||
|
NS_IMETHODIMP
|
||||||
|
nsStreamConverterService::RegisterConverter(const char *aProgID, nsISupports *aConverter) {
|
||||||
|
NS_ASSERTION(aProgID, "progid required");
|
||||||
|
nsresult rv;
|
||||||
|
|
||||||
|
// first parse out the FROM and TO MIME-types being registered.
|
||||||
|
|
||||||
|
nsString2 ProgIDStr(aProgID, eOneByte);
|
||||||
|
PRInt32 fromLoc = ProgIDStr.Find("from=") + 5;
|
||||||
|
PRInt32 toLoc = ProgIDStr.Find("to=") + 3;
|
||||||
|
if (-1 == fromLoc || -1 == toLoc ) return NS_ERROR_FAILURE;
|
||||||
|
|
||||||
|
nsString2 fromStr(eOneByte), toStr(eOneByte);
|
||||||
|
PRInt32 fromLen = toLoc - 4 - fromLoc;
|
||||||
|
PRInt32 toLen = ProgIDStr.Length() - toLoc;
|
||||||
|
|
||||||
|
ProgIDStr.Mid(fromStr, fromLoc, fromLen);
|
||||||
|
ProgIDStr.Mid(toStr, toLoc, toLen);
|
||||||
|
|
||||||
|
|
||||||
|
// Each MIME-type is a vertex in the graph, so first lets make sure
|
||||||
|
// each MIME-type is represented as a key in our hashtable.
|
||||||
|
|
||||||
|
nsStringKey *fromKey = new nsStringKey(fromStr.GetBuffer());
|
||||||
|
nsStringKey *toKey = new nsStringKey(toStr.GetBuffer());
|
||||||
|
|
||||||
|
tableData *edges = (tableData*)mAdjacencyList->Get(fromKey);
|
||||||
|
if (!edges) {
|
||||||
|
// There is no fromStr vertex, create one.
|
||||||
|
tableData *data = new tableData;
|
||||||
|
if (!data) return NS_ERROR_OUT_OF_MEMORY;
|
||||||
|
data->key = fromKey;
|
||||||
|
data->keyString = new nsString2(fromStr.GetBuffer());
|
||||||
|
data->data = new nsVoidArray();
|
||||||
|
if (!data->data) return NS_ERROR_OUT_OF_MEMORY;
|
||||||
|
mAdjacencyList->Put(fromKey, data);
|
||||||
|
}
|
||||||
|
|
||||||
|
edges = (tableData*)mAdjacencyList->Get(toKey);
|
||||||
|
if (!edges) {
|
||||||
|
// There is no toStr vertex, create one.
|
||||||
|
tableData *data = new tableData;
|
||||||
|
if (!data) return NS_ERROR_OUT_OF_MEMORY;
|
||||||
|
data->key = toKey;
|
||||||
|
data->keyString = new nsString2(toStr.GetBuffer());
|
||||||
|
data->data = new nsVoidArray();
|
||||||
|
if (!data->data) return NS_ERROR_OUT_OF_MEMORY;
|
||||||
|
mAdjacencyList->Put(toKey, data);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// Now we know the FROM and TO types are represented as keys in the hashtable.
|
||||||
|
// Let's "connect" the verticies, making an edge.
|
||||||
|
|
||||||
|
edges = (tableData*)mAdjacencyList->Get(fromKey);
|
||||||
|
NS_ASSERTION(edges, "something wrong in adjacency list construction");
|
||||||
|
nsIAtom *vertex = NS_NewAtom(toStr);
|
||||||
|
if (!vertex) return NS_ERROR_OUT_OF_MEMORY;
|
||||||
|
nsVoidArray *adjacencyList = (nsVoidArray*)edges->data;
|
||||||
|
adjacencyList->AppendElement(vertex);
|
||||||
|
|
||||||
|
|
||||||
|
// We're done building our adjacency list, let's move onto the service
|
||||||
|
// manager registration.
|
||||||
|
|
||||||
|
rv = nsServiceManager::RegisterService(aProgID, aConverter);
|
||||||
|
return rv;
|
||||||
|
}
|
||||||
|
|
||||||
|
////////////////////////////////////////////////////////////
|
||||||
|
// nsStreamConverterService methods
|
||||||
|
nsStreamConverterService::nsStreamConverterService() {
|
||||||
|
NS_INIT_REFCNT();
|
||||||
|
}
|
||||||
|
|
||||||
|
nsStreamConverterService::~nsStreamConverterService() {
|
||||||
|
//mAdjacencyList->Enumerate(DeleteEntry, nsnull);
|
||||||
|
//mAdjacencyList->Reset();
|
||||||
|
delete mAdjacencyList;
|
||||||
|
}
|
||||||
|
|
||||||
|
nsresult
|
||||||
|
nsStreamConverterService::Init() {
|
||||||
|
mAdjacencyList = new nsHashtable();
|
||||||
|
if (!mAdjacencyList) return NS_ERROR_OUT_OF_MEMORY;
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
enum colors {white, gray, black};
|
||||||
|
|
||||||
|
typedef struct _BFSState {
|
||||||
|
colors color;
|
||||||
|
PRInt32 distance;
|
||||||
|
nsHashKey *predecessor;
|
||||||
|
} BFSState;
|
||||||
|
|
||||||
|
// nsHashtable enumerator functions.
|
||||||
|
|
||||||
|
// Initializes the color table.
|
||||||
|
PRBool InitBFSTable(nsHashKey *aKey, void *aData, void* closure) {
|
||||||
|
nsHashtable *BFSTable = (nsHashtable*)closure;
|
||||||
|
if (!BFSTable) return PR_FALSE;
|
||||||
|
|
||||||
|
BFSState *state = new BFSState;
|
||||||
|
if (!state) return NS_ERROR_OUT_OF_MEMORY;
|
||||||
|
|
||||||
|
state->color = white;
|
||||||
|
state->distance = -1;
|
||||||
|
state->predecessor = nsnull;
|
||||||
|
|
||||||
|
tableData *data = new tableData;
|
||||||
|
if (!data) return NS_ERROR_OUT_OF_MEMORY;
|
||||||
|
data->key = aKey->Clone();
|
||||||
|
|
||||||
|
tableData *origData = (tableData*)aData;
|
||||||
|
NS_ASSERTION(origData, "no data in the table enumeration");
|
||||||
|
data->keyString = new nsString2(*origData->keyString);
|
||||||
|
data->data = state;
|
||||||
|
|
||||||
|
BFSTable->Put(aKey, data);
|
||||||
|
return PR_TRUE;
|
||||||
|
};
|
||||||
|
|
||||||
|
nsresult
|
||||||
|
nsStreamConverterService::FindConverter(const char *aProgID, PRBool direct, nsCID *aCID, nsVoidArray **aEdgeList) {
|
||||||
|
|
||||||
|
|
||||||
|
// FIRST. try a direct lookup.
|
||||||
|
|
||||||
|
// Direct lookup didn't succeed, walk the graph.
|
||||||
|
// walk the graph in search of the appropriate converter.
|
||||||
|
|
||||||
|
PRInt32 vertexCount = mAdjacencyList->Count();
|
||||||
|
if (0 >= vertexCount)
|
||||||
|
return NS_ERROR_FAILURE;
|
||||||
|
|
||||||
|
// Create a corresponding color table for each vertex in the graph.
|
||||||
|
nsHashtable lBFSTable;
|
||||||
|
mAdjacencyList->Enumerate(InitBFSTable, &lBFSTable);
|
||||||
|
|
||||||
|
NS_ASSERTION(lBFSTable.Count() == vertexCount, "strmconv BFS table init problem");
|
||||||
|
|
||||||
|
// This is our source vertex; our starting point.
|
||||||
|
nsStringKey *source = new nsStringKey(aProgID);
|
||||||
|
if (!source) return NS_ERROR_OUT_OF_MEMORY;
|
||||||
|
|
||||||
|
tableData *data = (tableData*)lBFSTable.Get(source);
|
||||||
|
BFSState *state = (BFSState*)data->data;
|
||||||
|
// XXX probably don't need this check.
|
||||||
|
if (!state)
|
||||||
|
return NS_ERROR_FAILURE;
|
||||||
|
|
||||||
|
state->color = gray;
|
||||||
|
state->distance = 0;
|
||||||
|
nsDeque *grayQ = new nsDeque(0);
|
||||||
|
|
||||||
|
// Now generate the shortest path tree.
|
||||||
|
grayQ->Push(source);
|
||||||
|
while (0 < grayQ->GetSize()) {
|
||||||
|
nsHashKey *currentHead = (nsHashKey*)grayQ->Pop();
|
||||||
|
tableData *data = (tableData*)mAdjacencyList->Get(currentHead);
|
||||||
|
nsVoidArray *edges = (nsVoidArray*)data->data;
|
||||||
|
NS_ASSERTION(edges, "something went wrong with BFS strmconv algorithm");
|
||||||
|
|
||||||
|
// Get the state of the current head to calculate the distance of each
|
||||||
|
// reachable vertex in the loop.
|
||||||
|
data = (tableData*)lBFSTable.Get(currentHead);
|
||||||
|
BFSState *headVertexState = (BFSState*)data->data;
|
||||||
|
NS_ASSERTION(headVertexState, "problem with the BFS strmconv algorithm");
|
||||||
|
|
||||||
|
PRInt32 edgeCount = edges->Count();
|
||||||
|
for (int i = 0; i < edgeCount; i++) {
|
||||||
|
|
||||||
|
nsIAtom *curVertexAtom = (nsIAtom*)edges->ElementAt(i);
|
||||||
|
nsString2 curVertexStr;
|
||||||
|
curVertexAtom->ToString(curVertexStr);
|
||||||
|
char * curVertexCString = curVertexStr.ToNewCString();
|
||||||
|
nsStringKey *curVertex = new nsStringKey(curVertexCString);
|
||||||
|
delete [] curVertexCString;
|
||||||
|
|
||||||
|
tableData *data = (tableData*)lBFSTable.Get(curVertex);
|
||||||
|
BFSState *curVertexState = (BFSState*)data->data;
|
||||||
|
NS_ASSERTION(curVertexState, "something went wrong with the BFS strmconv algorithm");
|
||||||
|
if (white == curVertexState->color) {
|
||||||
|
curVertexState->color = gray;
|
||||||
|
curVertexState->distance = headVertexState->distance + 1;
|
||||||
|
curVertexState->predecessor = currentHead->Clone();
|
||||||
|
grayQ->Push(curVertex);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
headVertexState->color = black;
|
||||||
|
grayQ->Pop();
|
||||||
|
}
|
||||||
|
// The shortest path (if any) has been generated and is represetned by the chain of
|
||||||
|
// BFSState->predecessor keys. Start at the bottom and work our way up.
|
||||||
|
|
||||||
|
// first parse out the FROM and TO MIME-types being registered.
|
||||||
|
|
||||||
|
nsString2 ProgIDStr(aProgID, eOneByte);
|
||||||
|
PRInt32 fromLoc = ProgIDStr.Find("from=") + 5;
|
||||||
|
PRInt32 toLoc = ProgIDStr.Find("to=") + 3;
|
||||||
|
if (-1 == fromLoc || -1 == toLoc ) return NS_ERROR_FAILURE;
|
||||||
|
|
||||||
|
nsString2 fromStr(eOneByte), toStr(eOneByte);
|
||||||
|
PRInt32 fromLen = toLoc - 4 - fromLoc;
|
||||||
|
PRInt32 toLen = ProgIDStr.Length() - toLoc;
|
||||||
|
|
||||||
|
ProgIDStr.Mid(fromStr, fromLoc, fromLen);
|
||||||
|
ProgIDStr.Mid(toStr, toLoc, toLen);
|
||||||
|
|
||||||
|
|
||||||
|
// get the root PROGID
|
||||||
|
nsString2 ProgIDPrefix(ProgIDStr);
|
||||||
|
ProgIDPrefix.Truncate(fromLoc - 5);
|
||||||
|
nsVoidArray *shortestPath = new nsVoidArray();
|
||||||
|
nsStringKey *toMIMEType = new nsStringKey(toStr);
|
||||||
|
data = (tableData*)lBFSTable.Get(toMIMEType);
|
||||||
|
NS_ASSERTION(data, "problem w/ strmconv BFS algorithm");
|
||||||
|
|
||||||
|
while (data) {
|
||||||
|
BFSState *curState = (BFSState*)data->data;
|
||||||
|
|
||||||
|
if (data->keyString->Equals(fromStr)) {
|
||||||
|
// found it. We're done here.
|
||||||
|
direct = PR_FALSE;
|
||||||
|
*aEdgeList = shortestPath;
|
||||||
|
return NS_OK;
|
||||||
|
}
|
||||||
|
|
||||||
|
// reconstruct the PROGID.
|
||||||
|
// Get the predecessor.
|
||||||
|
tableData *predecessorData = (tableData*)lBFSTable.Get(curState->predecessor);
|
||||||
|
NS_ASSERTION(predecessorData, "can't get predecessor data");
|
||||||
|
|
||||||
|
// build out the PROGID.
|
||||||
|
nsString2 *newProgID = new nsString2(ProgIDPrefix);
|
||||||
|
newProgID->Append("from=");
|
||||||
|
|
||||||
|
char *from = predecessorData->keyString->ToNewCString();
|
||||||
|
newProgID->Append(from);
|
||||||
|
delete [] from;
|
||||||
|
|
||||||
|
newProgID->Append("?to=");
|
||||||
|
char *to = data->keyString->ToNewCString();
|
||||||
|
newProgID->Append(to);
|
||||||
|
delete [] to;
|
||||||
|
|
||||||
|
// Add this PROGID to the chain.
|
||||||
|
shortestPath->AppendElement(newProgID);
|
||||||
|
|
||||||
|
// move up the tree.
|
||||||
|
data = predecessorData;
|
||||||
|
}
|
||||||
|
|
||||||
|
return NS_ERROR_FAILURE; // couldn't find a stream converter or chain.
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
NS_IMETHODIMP
|
||||||
|
nsStreamConverterService::OnDataAvailable(nsIChannel *channel, nsISupports *ctxt, nsIInputStream *inStr, PRUint32 sourceOffset, PRUint32 count) {
|
||||||
|
return NS_ERROR_NOT_IMPLEMENTED;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
NS_IMETHODIMP
|
||||||
|
nsStreamConverterService::OnStartRequest(nsIChannel *channel, nsISupports *ctxt) {
|
||||||
|
return NS_ERROR_NOT_IMPLEMENTED;
|
||||||
|
}
|
||||||
|
|
||||||
|
NS_IMETHODIMP
|
||||||
|
nsStreamConverterService::OnStopRequest(nsIChannel *channel, nsISupports *ctxt, nsresult status, const PRUnichar *errorMsg) {
|
||||||
|
return NS_ERROR_NOT_IMPLEMENTED;
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,75 @@
|
||||||
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
||||||
|
/*
|
||||||
|
* The contents of this file are subject to the Netscape Public License
|
||||||
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
||||||
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
||||||
|
* http://www.mozilla.org/NPL/
|
||||||
|
*
|
||||||
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
||||||
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
||||||
|
* for the specific language governing rights and limitations under the
|
||||||
|
* NPL.
|
||||||
|
*
|
||||||
|
* The Initial Developer of this code under the NPL is Netscape
|
||||||
|
* Communications Corporation. Portions created by Netscape are
|
||||||
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
||||||
|
* Reserved.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef __nsstreamconverterservice__h___
|
||||||
|
#define __nsstreamconverterservice__h___
|
||||||
|
|
||||||
|
#include "nsIStreamConverterService.h"
|
||||||
|
#include "nsIStreamListener.h"
|
||||||
|
#include "nsHashtable.h"
|
||||||
|
#include "nsVoidArray.h"
|
||||||
|
|
||||||
|
class nsStreamConverterService : public nsIStreamConverterService {
|
||||||
|
public:
|
||||||
|
/////////////////////////////////////////////////////
|
||||||
|
// nsISupports methods
|
||||||
|
NS_DECL_ISUPPORTS
|
||||||
|
|
||||||
|
|
||||||
|
/////////////////////////////////////////////////////
|
||||||
|
// nsIStreamConverterService methods
|
||||||
|
NS_IMETHOD RegisterConverter(const char *aProgID, nsISupports *aConverter);
|
||||||
|
|
||||||
|
|
||||||
|
/////////////////////////////////////////////////////
|
||||||
|
// nsIStreamConverter methods
|
||||||
|
NS_IMETHOD Convert(nsIInputStream *aFromStream, const PRUnichar *aFromType, const PRUnichar *aToType, nsIInputStream **_retval)
|
||||||
|
{ return NS_ERROR_NOT_IMPLEMENTED;};
|
||||||
|
NS_IMETHOD AsyncConvertStream(nsIInputStream *aFromStream, const PRUnichar *aFromType, const PRUnichar *aToType, nsIStreamListener *aListener)
|
||||||
|
{ return NS_ERROR_NOT_IMPLEMENTED;};
|
||||||
|
NS_IMETHOD AsyncConvertData(const PRUnichar *aFromType, const PRUnichar *aToType, nsIStreamListener *aListener)
|
||||||
|
{ return NS_ERROR_NOT_IMPLEMENTED;};
|
||||||
|
|
||||||
|
|
||||||
|
/////////////////////////////////////////////////////
|
||||||
|
// nsIStreamListener methods
|
||||||
|
NS_IMETHOD OnDataAvailable(nsIChannel *channel, nsISupports *ctxt, nsIInputStream *inStr, PRUint32 sourceOffset, PRUint32 count);
|
||||||
|
|
||||||
|
|
||||||
|
/////////////////////////////////////////////////////
|
||||||
|
// nsIStreamObserver methods
|
||||||
|
NS_IMETHOD OnStartRequest(nsIChannel *channel, nsISupports *ctxt);
|
||||||
|
NS_IMETHOD OnStopRequest(nsIChannel *channel, nsISupports *ctxt, nsresult status, const PRUnichar *errorMsg);
|
||||||
|
|
||||||
|
/////////////////////////////////////////////////////
|
||||||
|
// nsStreamConverterService methods
|
||||||
|
nsStreamConverterService();
|
||||||
|
virtual ~nsStreamConverterService();
|
||||||
|
|
||||||
|
// Initialization routine. Must be called after this object is constructed.
|
||||||
|
nsresult Init();
|
||||||
|
|
||||||
|
private:
|
||||||
|
// Responsible for finding a converter for the given MIME-type.
|
||||||
|
nsresult FindConverter(const char *aProgID, PRBool direct, nsCID *aCID, nsVoidArray **aEdgeList);
|
||||||
|
|
||||||
|
// member variables
|
||||||
|
nsHashtable *mAdjacencyList;
|
||||||
|
};
|
||||||
|
|
||||||
|
#endif // __nsstreamconverterservice__h___
|
||||||
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