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/*
* Mesa 3-D graphics library
* Version: 6.5
*
* Copyright (C) 2005-2006 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file slang_utility.c
* slang utilities
* \author Michal Krol
*/
#include "imports.h"
#include "slang_utility.h"
char *slang_string_concat (char *dst, const char *src)
{
return _mesa_strcpy (dst + _mesa_strlen (dst), src);
}
/* slang_atom_pool */
void slang_atom_pool_construct (slang_atom_pool *pool)
{
GLuint i;
for (i = 0; i < SLANG_ATOM_POOL_SIZE; i++)
pool->entries[i] = NULL;
}
void slang_atom_pool_destruct (slang_atom_pool *pool)
{
GLuint i;
for (i = 0; i < SLANG_ATOM_POOL_SIZE; i++)
{
slang_atom_entry *entry;
entry = pool->entries[i];
while (entry != NULL)
{
slang_atom_entry *next;
next = entry->next;
slang_alloc_free (entry->id);
slang_alloc_free (entry);
entry = next;
}
}
}
slang_atom slang_atom_pool_atom (slang_atom_pool *pool, const char *id)
{
GLuint hash;
const char *p = id;
slang_atom_entry **entry;
hash = 0;
while (*p != '\0')
{
GLuint g;
hash = (hash << 4) + (GLuint) *p++;
g = hash & 0xf0000000;
if (g != 0)
hash ^= g >> 24;
hash &= ~g;
}
hash %= SLANG_ATOM_POOL_SIZE;
entry = &pool->entries[hash];
while (*entry != NULL)
{
if (slang_string_compare ((**entry).id, id) == 0)
return (slang_atom) (**entry).id;
entry = &(**entry).next;
}
*entry = (slang_atom_entry *) slang_alloc_malloc (sizeof (slang_atom_entry));
if (*entry == NULL)
return SLANG_ATOM_NULL;
(**entry).next = NULL;
(**entry).id = slang_string_duplicate (id);
if ((**entry).id == NULL)
return SLANG_ATOM_NULL;
return (slang_atom) (**entry).id;
}
const char *slang_atom_pool_id (slang_atom_pool *pool, slang_atom atom)
{
return (const char *) atom;
}
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