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107 lines
6.4 KiB
C
107 lines
6.4 KiB
C
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* 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
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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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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* Reserved.
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*/
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#ifndef __ExtensionGenerator_H
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#define __ExtensionGenerator_H
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/* Author:
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* Garrett Arch Blythe
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* blythe@netscape.com
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*/
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/*--------------------------------------------------------------------------**
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** Flags passed into the EXT_* functions. **
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** **
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** EXT_PRESERVE_EXT The generated extension must be based on the **
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** provided file/url name. **
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** EXT_PRESERVE_MIME The generated extension must be based on the **
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** provided mime type. **
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** EXT_SHELL_EXECUTABLE The generated extension must be ShellExecutable. **
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** EXT_NO_PERIOD The generated extension will not contain a **
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** leading period. **
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** EXT_DOT_THREE Limit generated extension to 3 characters for **
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** 16 bit operating system compatibility. **
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** EXT_EXECUTABLE_IDENTITY Only has meaning when used in conjunction with **
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** EXT_SHELL_EXECUTABLE. When specified, it **
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** will allow EXT_SHELL_EXECUTABLE flag to **
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** succeed when the extension generated itself **
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** is executable (.exe, .bat, .lnk, etc.). **
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** This behavior is off by default. **
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**--------------------------------------------------------------------------*/
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#define EXT_PRESERVE_EXT 0x00000001UL
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#define EXT_PRESERVE_MIME 0x00000002UL
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#define EXT_SHELL_EXECUTABLE 0x00000004UL
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#define EXT_NO_PERIOD 0x00000008UL
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#define EXT_DOT_THREE 0x00000010UL
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#define EXT_EXECUTABLE_IDENTITY 0x00000020UL
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/*-----------------------------------------------------------------------**
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** EXT_Invent Autogenerate an extension from provided criteria. **
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** Uses a complex approach, attempting to find the **
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** best possible extension under any given **
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** circumstance when an extension is abosulutely **
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** needed. **
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** This function mainly calls EXT_Generate will certain **
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** combinations of flags in a certain priority. **
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** READS: Heuristic, don't muck with this casually. **
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** **
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** Returns size_t 0 on failure or no extension available. **
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** Number of bytes written to pOutExtension on success. **
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** If pOutExtension is NULL, then number of bytes needed **
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** not including terminating NULL character. **
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** **
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** pOutExtension Returned extension once generated. Can be NULL if **
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** querying size of buffer needed. **
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** stExtBufSize Size in bytes of pOutExtension. Ignored if **
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** pOutExtension is NULL. **
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** dwFlags Combination of flags indicating which algorithm to **
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** use to generate the extension. The only flags **
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** currently allowed are EXT_NO_PERIOD and **
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** EXT_DOT_THREE. **
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** pOrigName File, URL, or .EXT which we are deriving the **
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** extension from. Can be NULL. **
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** pMimeType Mime type which we are deriving the extension from. **
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** Can be NULL. **
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**-----------------------------------------------------------------------*/
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size_t EXT_Invent(char *pOutExtension, size_t stExtBufSize, DWORD dwFlags, const char *pOrigName, const char *pMimeType);
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/*-----------------------------------------------------------------------**
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** EXT_Generate Autogenerate an extension from provided criteria. **
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** **
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** Returns size_t 0 on failure or no extension available. **
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** Number of bytes written to pOutExtension on success. **
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** If pOutExtension is NULL, then number of bytes needed **
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** not including terminating NULL character. **
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** **
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** pOutExtension Returned extension once generated. Can be NULL if **
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** querying size of buffer needed. **
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** stExtBufSize Size in bytes of pOutExtension. Ignored if **
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** pOutExtension is NULL. **
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** dwFlags Combination of flags indicating which algorithm to **
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** use to generate the extension. All flags are **
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** allowed. **
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** pOrigName File, URL, or .EXT which we are deriving the **
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** extension from. Can be NULL. **
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** pMimeType Mime type which we are deriving the extension from. **
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** Can be NULL. **
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**-----------------------------------------------------------------------*/
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size_t EXT_Generate(char *pOutExtension, size_t stExtBufSize, DWORD dwFlags, const char *pOrigName, const char *pMimeType);
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#endif // __ExtensionGenerator_H
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