76 lines
1.5 KiB
C++
76 lines
1.5 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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* Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
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* $License$
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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 gMessageStringTable;
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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);
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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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