98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
/**
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* @file message_string_table.cpp
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* @brief static string table for message template
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*
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* $LicenseInfo:firstyear=2001&license=viewergpl$
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*
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* Copyright (c) 2001-2009, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at
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* http://secondlifegrid.net/programs/open_source/licensing/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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* $/LicenseInfo$
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*/
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#include "linden_common.h"
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#include "llerror.h"
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#include "message.h"
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inline U32 message_hash_my_string(const char *str)
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{
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U32 retval = 0;
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while (*str++)
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{
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retval += *str;
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retval <<= 1;
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}
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return (retval % MESSAGE_NUMBER_OF_HASH_BUCKETS);
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}
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LLMessageStringTable::LLMessageStringTable()
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: mUsed(0)
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{
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for (U32 i = 0; i < MESSAGE_NUMBER_OF_HASH_BUCKETS; i++)
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{
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mEmpty[i] = TRUE;
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mString[i][0] = 0;
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}
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}
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LLMessageStringTable::~LLMessageStringTable()
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{ }
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char* LLMessageStringTable::getString(const char *str)
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{
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U32 hash_value = message_hash_my_string(str);
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while (!mEmpty[hash_value])
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{
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if (!strncmp(str, mString[hash_value], MESSAGE_MAX_STRINGS_LENGTH))
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{
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return mString[hash_value];
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}
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else
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{
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hash_value++;
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hash_value %= MESSAGE_NUMBER_OF_HASH_BUCKETS;
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}
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}
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// not found, so add!
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strncpy(mString[hash_value], str, MESSAGE_MAX_STRINGS_LENGTH); /* Flawfinder: ignore */
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mString[hash_value][MESSAGE_MAX_STRINGS_LENGTH - 1] = 0;
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mEmpty[hash_value] = FALSE;
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mUsed++;
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if (mUsed >= MESSAGE_NUMBER_OF_HASH_BUCKETS - 1)
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{
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U32 i;
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llinfos << "Dumping string table before crashing on HashTable full!" << llendl;
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for (i = 0; i < MESSAGE_NUMBER_OF_HASH_BUCKETS; i++)
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{
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llinfos << "Entry #" << i << ": " << mString[i] << llendl;
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}
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}
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return mString[hash_value];
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}
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