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/**************************************************************************
*
* Copyright 2009 VMware, Inc.
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
#include <stdlib.h>
#include "sl_pp_context.h"
int
sl_pp_context_init(struct sl_pp_context *context)
{
memset(context, 0, sizeof(struct sl_pp_context));
if (sl_pp_dict_init(context)) {
sl_pp_context_destroy(context);
return -1;
}
context->macro_tail = &context->macro;
context->if_ptr = SL_PP_MAX_IF_NESTING;
context->if_value = 1;
memset(context->error_msg, 0, sizeof(context->error_msg));
context->line = 1;
context->file = 0;
return 0;
}
void
sl_pp_context_destroy(struct sl_pp_context *context)
{
free(context->cstr_pool);
sl_pp_macro_free(context->macro);
}
int
sl_pp_context_add_unique_str(struct sl_pp_context *context,
const char *str)
{
unsigned int size;
unsigned int offset = 0;
size = strlen(str) + 1;
/* Find out if this is a unique string. */
while (offset < context->cstr_pool_len) {
const char *str2;
unsigned int size2;
str2 = &context->cstr_pool[offset];
size2 = strlen(str2) + 1;
if (size == size2 && !memcmp(str, str2, size - 1)) {
return offset;
}
offset += size2;
}
if (context->cstr_pool_len + size > context->cstr_pool_max) {
context->cstr_pool_max = (context->cstr_pool_len + size + 0xffff) & ~0xffff;
context->cstr_pool = realloc(context->cstr_pool, context->cstr_pool_max);
}
if (!context->cstr_pool) {
strcpy(context->error_msg, "out of memory");
return -1;
}
offset = context->cstr_pool_len;
memcpy(&context->cstr_pool[offset], str, size);
context->cstr_pool_len += size;
return offset;
}
const char *
sl_pp_context_cstr(const struct sl_pp_context *context,
int offset)
{
if (offset == -1) {
return NULL;
}
return &context->cstr_pool[offset];
}
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