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142 lines
3.2 KiB
142 lines
3.2 KiB
/*-------------------------------------------------------------------------
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* drawElements Memory Pool Library
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* --------------------------------
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*
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* Copyright 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*//*!
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* \file
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* \brief Memory pool management.
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*//*--------------------------------------------------------------------*/
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#include "dePoolStringBuilder.h"
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#include <string.h>
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#include <stdarg.h>
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#include <stdio.h>
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typedef struct StringBlock_s
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{
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const char* str;
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struct StringBlock_s* next;
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} StringBlock;
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struct dePoolStringBuilder_s
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{
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deMemPool* pool;
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int length;
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StringBlock* blockListHead;
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StringBlock* blockListTail;
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};
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dePoolStringBuilder* dePoolStringBuilder_create (deMemPool* pool)
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{
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dePoolStringBuilder* builder = DE_POOL_NEW(pool, dePoolStringBuilder);
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if (!builder)
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return DE_NULL;
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builder->pool = pool;
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builder->length = 0;
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builder->blockListHead = DE_NULL;
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builder->blockListTail = DE_NULL;
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return builder;
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}
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deBool dePoolStringBuilder_appendString (dePoolStringBuilder* builder, const char* str)
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{
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StringBlock* block = DE_POOL_NEW(builder->pool, StringBlock);
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size_t len = strlen(str);
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char* blockStr = (char*)deMemPool_alloc(builder->pool, len + 1);
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if (!block || !blockStr)
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return DE_FALSE;
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/* Initialize block. */
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{
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char* d = blockStr;
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const char* s = str;
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while (*s)
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*d++ = *s++;
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*d = 0;
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block->str = blockStr;
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block->next = DE_NULL;
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}
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/* Add block to list. */
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if (builder->blockListTail)
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builder->blockListTail->next = block;
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else
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builder->blockListHead = block;
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builder->blockListTail = block;
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builder->length += (int)len;
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return DE_TRUE;
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}
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deBool dePoolStringBuilder_appendFormat (dePoolStringBuilder* builder, const char* format, ...)
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{
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char buf[512];
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va_list args;
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deBool ok;
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va_start(args, format);
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vsnprintf(buf, DE_LENGTH_OF_ARRAY(buf), format, args);
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ok = dePoolStringBuilder_appendString(builder, buf);
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va_end(args);
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return ok;
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}
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/* \todo [2009-09-05 petri] Other appends? printf style? */
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int dePoolStringBuilder_getLength (dePoolStringBuilder* builder)
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{
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return builder->length;
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}
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char* dePoolStringBuilder_dupToString (dePoolStringBuilder* builder)
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{
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return dePoolStringBuilder_dupToPool(builder, builder->pool);
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}
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char* dePoolStringBuilder_dupToPool (dePoolStringBuilder* builder, deMemPool* pool)
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{
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char* resultStr = (char*)deMemPool_alloc(pool, (size_t)builder->length + 1);
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if (resultStr)
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{
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StringBlock* block = builder->blockListHead;
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char* dstPtr = resultStr;
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while (block)
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{
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const char* p = block->str;
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while (*p)
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*dstPtr++ = *p++;
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block = block->next;
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}
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*dstPtr++ = 0;
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DE_ASSERT((int)strlen(resultStr) == builder->length);
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}
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return resultStr;
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}
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