79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is [Open Source Virtual Machine.].
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*
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* The Initial Developer of the Original Code is
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* Adobe System Incorporated.
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* Portions created by the Initial Developer are Copyright (C) 2004-2006
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Adobe AS3 Team
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef __avmshell_FileInputStream__
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#define __avmshell_FileInputStream__
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namespace avmshell
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{
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/**
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* InputStream is an abstract base class for input streams.
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* Concrete subclasses must implement the available and read
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* methods to do appropriate read operations.
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*/
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class InputStream
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{
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public:
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virtual ~InputStream() {}
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virtual int available() = 0;
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virtual int read(void *buffer, int count) = 0;
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};
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/**
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* FileInputStream is a concrete subclass of InputStream
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* that implements file input.
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*/
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class FileInputStream : public InputStream
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{
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public:
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FileInputStream(const char *filename);
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bool valid() const;
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~FileInputStream();
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int available();
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int length() const { return len; }
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void seek(int offset);
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int read(void *buffer, int count);
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private:
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FILE *file;
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long len;
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};
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}
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#endif /* __avmshell_FileInputStream__ */
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