RetroZilla/toolkit/mozapps/installer/unix/wizard/nsINIParser.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Samir Gehani <sgehani@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef _NS_INIPARSER_H_
#define _NS_INIPARSER_H_
#include <stdio.h>
#include <malloc.h>
#include <string.h>
#include <sys/stat.h>
#include <locale.h>
class nsINIParser
{
public:
/**
* nsINIParser
*
* Construct a new INI parser for the file specified.
*
* @param aFilename path to INI file
*/
nsINIParser(char *aFilename);
~nsINIParser();
/**
* GetString
*
* Gets the value of the specified key in the specified section
* of the INI file represented by this instance. The value is stored
* in the supplied buffer. The buffer size is provided as input and
* the actual bytes used by the value is set in the in/out size param.
*
* @param aSection section name
* @param aKey key name
* @param aValBuf user supplied buffer
* @param aIOValBufSize buf size on input; actual buf used on output
*
* @return mError operation success code
*/
int GetString( char *aSection, char *aKey,
char *aValBuf, int *aIOValBufSize );
/**
* GetStringAlloc
*
* Same as GetString() except the buffer is allocated to the exact
* size of the value. Useful when the buffer is allocated everytime
* rather than reusing the same buffer when calling this function
* multiple times.
*
* @param aSection section name
* @param aKey key name
* @param aOutBuf buffer to be allocated
* @param aOutBufSize size of newly allocated buffer
*
* @return mError operation success code
*/
int GetStringAlloc( char *aSection, char *aKey,
char **aOutBuf, int *aOutBufSize );
/**
* GetError
*
* Exposes the last error on this instance. Useful for checking
* the state of the object after construction since the INI file
* is parsed once at object-allocation time.
*
* @return mError last error on ops on this object
*/
int GetError();
/**
* ResolveName
*
* Given a "root" name we append the runtime locale of the
* current system to the <root>.ini. If such a file exists we
* return this as the name else simply return <root>.ini.
*
* NOTE: Returned string is allocated and caller is responsible
* ---- for its deallocation.
*
* @param aINIRoot the "root" of the INI file name
* @return resolved the resolved INI file name
* (NULL if neither exist)
*/
static char *ResolveName(char *aINIRoot);
/*--------------------------------------------------------------------*
* Errors
*--------------------------------------------------------------------*/
enum
{
OK = 0,
E_READ = -701,
E_MEM = -702,
E_PARAM = -703,
E_NO_SEC = -704,
E_NO_KEY = -705,
E_SEC_CORRUPT = -706,
E_SMALL_BUF = -707
};
private:
int FindSection(char *aSection, char **aOutSecPtr);
int FindKey(char *aSecPtr, char *aKey, char *aVal, int *aIOValSize);
char *mFileBuf;
int mFileBufSize;
int mError;
};
#define NL '\n'
#define MAX_VAL_SIZE 4096
#if defined(DUMP)
#undef DUMP
#endif
#if defined(DEBUG_sgehani) || defined(DEBUG_druidd) || defined(DEBUG_root)
#define DUMP(_msg) printf("%s %d: %s \n", __FILE__, __LINE__, _msg);
#else
#define DUMP(_msg)
#endif
#endif /*_NS_INIPARSER_H_ */