C++ buffer_alloc函数代码示例

static vmVariant vmFileClassInitCallback(vmRuntimeContext context,vmClass * clazz,vmObject * object,vmVariantList args,InvokeTickDeclare){
    vmFile * file = (vmFile *) object;
    vmVariant rs=  {vmVariantTypeVoid,0};
    hbuffer_t bPath = buffer_alloc(128, 128);
    hbuffer_t bMode = buffer_alloc(32, 32);
    vmVariant path = vmVariantListGet(args, 0);
    vmVariant mode = vmVariantListGet(args, 1);
    
    vmVariantToString(context, path, bPath);
    vmVariantToString(context, mode, bMode);
    
    
    if(buffer_length(bPath) ==0){
        rs = vmRuntimeContextException(context, 0, "not found argument 1 file path");
    }
    
    if(rs.type == vmVariantTypeVoid){
        file->file = fopen(buffer_to_str(bPath), buffer_to_str(bMode));
    }
    
    if(!file->file){
        rs = vmRuntimeContextException(context, 0, "not found argument 2 file mode");
    }
    
    buffer_dealloc(bPath);
    buffer_dealloc(bMode);

    file->uniqueKeys.flush = vmRuntimeContextGetUniqueKey(context, "flush");
    file->uniqueKeys.read = vmRuntimeContextGetUniqueKey(context, "read");
    file->uniqueKeys.write = vmRuntimeContextGetUniqueKey(context, "write");
    file->uniqueKeys.seek = vmRuntimeContextGetUniqueKey(context, "seek");
    file->uniqueKeys.pos = vmRuntimeContextGetUniqueKey(context, "pos");
    
    return rs;
}

BUFFER *set_table_cmap( void ) {

  BUFFER *cmap_buf = makebuffer( sizeof( OTF_TABLE_CMAP ) +
                                 sizeof( OTF_CMAP_FORMAT4_ENCTABLE ) +
                                 sizeof( OTF_CMAP_FORMAT6_ENCTABLE ) );
  OTF_TABLE_CMAP *t_cmaptable =
      buffer_alloc( cmap_buf, sizeof( OTF_TABLE_CMAP ) );
  t_cmaptable->version = 0;
  t_cmaptable->numTables = htons( 3 );
  t_cmaptable->record1.platformID = 0;
  t_cmaptable->record1.encodingID = htons( 3 );
  t_cmaptable->record2.platformID = htons( 1 );
  t_cmaptable->record2.encodingID = 0;
  t_cmaptable->record3.platformID = htons( 3 );
  t_cmaptable->record3.encodingID = htons( 1 );

  OTF_CMAP_FORMAT4_ENCTABLE *t_cmap_encode4 =
      buffer_alloc( cmap_buf, sizeof( OTF_CMAP_FORMAT4_ENCTABLE ) );
  t_cmap_encode4->format = htons( 4 );
  t_cmap_encode4->length = htons( 40 );
  t_cmap_encode4->segCountX2 = htons( 6 );
  t_cmap_encode4->searchRange = htons( 4 );
  t_cmap_encode4->entrySelector = htons( 1 );
  t_cmap_encode4->rangeShift = htons( 2 );
  t_cmap_encode4->endCount1 = htons( 32 );
  t_cmap_encode4->endCount2 = htons( 46 );
  t_cmap_encode4->endCount3 = htons( 65535 );
  t_cmap_encode4->startCount1 = htons( 32 );
  t_cmap_encode4->startCount2 = htons( 46 );
  t_cmap_encode4->startCount3 = htons( 65535 );
  t_cmap_encode4->idDelta1 = htons( -31 );
  t_cmap_encode4->idDelta2 = htons( -44 );
  t_cmap_encode4->idDelta3 = htons( 1 );

  OTF_CMAP_FORMAT6_ENCTABLE *t_cmap_encode6 =
      buffer_alloc( cmap_buf, sizeof( OTF_CMAP_FORMAT6_ENCTABLE ) );
  t_cmap_encode6->format = htons( 6 );
  t_cmap_encode6->length = htons( 86 );
  t_cmap_encode6->firstCode = htons( 9 );
  t_cmap_encode6->entryCount = htons( 38 );
  t_cmap_encode6->entry[0] = htons( 1 );
  t_cmap_encode6->entry[4] = htons( 1 );
  t_cmap_encode6->entry[23] = htons( 1 );
  t_cmap_encode6->entry[37] = htons( 2 );

  /* Record one and three point at the same character. Record two is offset
   * immediatly following record one. */
  t_cmaptable->record1.offset = htonl( sizeof( OTF_TABLE_CMAP ) );
  t_cmaptable->record2.offset =
      htonl( sizeof( OTF_TABLE_CMAP ) + sizeof( OTF_CMAP_FORMAT4_ENCTABLE ) );
  t_cmaptable->record3.offset = htonl( sizeof( OTF_TABLE_CMAP ) );

  return cmap_buf;
}

//Scans the full the Cog and returns iterator.
iterator scan_full_array( struct cog *cog) {
  if( cog->type == COG_BTREE )
    {
      struct cog *a = cog->data.btree.lhs;
      struct cog *b = cog->data.btree.rhs;
      return iter_concat(
      scan_full_array(a),
      scan_full_array(b)
    );      
    }
  if( cog->type == COG_CONCAT )
    {
      struct cog *a = cog->data.concat.lhs;
      struct cog *b = cog->data.concat.rhs;
      return iter_concat(
      scan_full_array(a),
      scan_full_array(b)
    );
    }
  if( cog->type == COG_SORTEDARRAY )
    {
      int start = cog->data.array.start;
      int len = cog->data.array.len;
      struct record *in = buffer_start(cog->data.array.records, start);
      struct buffer *out = buffer_alloc(cog->data.sortedarray.len + 1);
      int i, tgt;
      iterator ret;
      for(i = 0, tgt = 0; i < len; i++){
        record_copy(&(in[i]), &(out->data[tgt]));
        tgt++;
      }
      ret = array_iter_alloc(out, 0, tgt);
      return ret;
    }
  if( cog->type == COG_ARRAY )
    {
      int start = cog->data.array.start;
      int len = cog->data.array.len;
      struct record *in = buffer_start(cog->data.array.records, start);
      struct buffer *out = buffer_alloc(cog->data.array.len );
      int i, tgt;
      iterator ret;
      for(i = 0, tgt = 0; i < len; i++){
        record_copy(&(in[i]), &(out->data[tgt]));
        tgt++;
      }
      ret = array_iter_alloc(out, 0, tgt);
      return ret;
    }
    fprintf(stderr, "Invalid Cog Type %d\n", cog->type);
    exit(-1);
}

 Value * CDExpNotEqual::sql(const char * prefix,const char * suffix){
     InvokeTickBegin
     hbuffer_t buf = buffer_alloc(128, 128);
     Value * v = NULL;
     
     buffer_append_str(buf, "(");
     
     v = _left->sql(prefix, suffix);
     
     if(v){
         buffer_append_str(buf, v->stringValue());
     }
     
     buffer_append_str(buf, " <= ");
     
     v = _right->sql(prefix, suffix);
     
     if(v){
         buffer_append_str(buf, v->stringValue());
     }
     
     
     buffer_append_str(buf, ")");
     
     
     v = (Value *)(new Value(buffer_to_str(buf)))->autorelease();
     
     buffer_dealloc(buf);
     
     return v;
 }

 Value * Bundle::getStringContentV(const char * format,va_list va){
     Value * path = getFilePathV(format,va);
     
     if(_parent){
         return _parent->getStringContent(path->stringValue());
     }
     
     Value * v = NULL;
     InvokeTickBegin
     hbuffer_t content = buffer_alloc(512, 512);
     FILE * f = fopen(path->stringValue(), "r");
     char buffer[1024];
     int len;
     
     if(f){
         while((len = fread(buffer, 1, sizeof(buffer), f)) >0){
             buffer_append(content, buffer, len);
         }
         fclose(f);
     }
     
     v = Value::newValue(buffer_to_str(content));
     
     buffer_dealloc(content);
     
     return v;
 }

void BLI_buffer_resize(BLI_Buffer *buffer, const size_t new_count)
{
	if (UNLIKELY(new_count > buffer->alloc_count)) {
		if (buffer->flag & BLI_BUFFER_USE_STATIC) {
			void *orig = buffer->data;

			buffer->data = buffer_alloc(buffer, new_count);
			memcpy(buffer->data, orig, buffer->elem_size * buffer->count);
			buffer->alloc_count = new_count;
			buffer->flag &= ~BLI_BUFFER_USE_STATIC;
		}
		else {
			if (buffer->alloc_count && (new_count < buffer->alloc_count * 2)) {
				buffer->alloc_count *= 2;
			}
			else {
				buffer->alloc_count = new_count;
			}

			buffer->data = buffer_realloc(buffer, buffer->alloc_count);
		}
	}

	buffer->count = new_count;
}

/**
   This function writes a filtered version of string to a file.
*/
void subst_list_filtered_fprintf(const subst_list_type * subst_list , const char * string , FILE * stream) {
  buffer_type * buffer = buffer_alloc( strlen(string) + 1 );
  buffer_fwrite( buffer , string , 1 , strlen( string ) + 1);
  subst_list_update_buffer(subst_list , buffer);
  buffer_stream_fwrite_n( buffer , 0 , -1 , stream );  /* -1: The trailing \0 is not explicitly written to file. */
  buffer_free(buffer);
}

bool register_put(Register *reg, Text *txt, Filerange *range) {
	size_t len = range->end - range->start;
	if (!buffer_alloc((Buffer*)reg, len))
		return false;
	reg->len = text_bytes_get(txt, range->start, len, reg->data);
	return true;
}

void list_split_str(hlist_t hlist, hcchar * str,hcchar *split_chars,InvokeTickDeclare){
	if(hlist && str && split_chars){
		hchar * p = (hchar *)str;
		hchar *s = NULL;
		hbuffer_t buffer = buffer_alloc(1024, 1024);
		
		while(*p !='\0'){
			if(list_split_str_exist_char(split_chars,p,InvokeTickArg) ){
				if(buffer_length(buffer) > 0){
					s = NULL;
					str_cpy(&s, buffer_to_str(buffer));
					list_add(hlist, s,InvokeTickArg);
					buffer_clear(buffer);
				}
			}
			else{
				buffer_append(buffer, p, 1);
			}
			p++;
		}
		
		if(buffer_length(buffer) >0){
			s = NULL;
			str_cpy(&s, buffer_to_str(buffer));
			list_add(hlist, s,InvokeTickArg);
		}
		
		buffer_dealloc(buffer);
	}
}

/**
 * Allocate a buffer for a dot-matrix page.
 * This is only done once per page at initialization.
 */
static struct buffer *asciidmd_alloc (void)
{
	struct buffer *buf = buffer_alloc (128 * 32 / 8);
	buf->width = 128 / 8;
	buf->height = 32;
	return buf;
}

static vmVariant vmSqliteClassInitCallback(vmRuntimeContext context,vmClass * clazz,vmObject * object,vmVariantList args,InvokeTickDeclare){
    vmVariant rs=  {vmVariantTypeVoid,0};
    vmSqlite * sqlite = (vmSqlite *) object;
    hbuffer_t file = buffer_alloc(128, 128);
    
    vmVariantToString(context, vmVariantListGet(args, 0), file);
    
    if(sqlite3_open(buffer_to_str(file), & sqlite->_sqlite)){
        
        rs = vmRuntimeContextException(context, sqlite3_errcode(sqlite->_sqlite), sqlite3_errmsg(sqlite->_sqlite));
        sqlite3_close(sqlite->_sqlite);
        
        sqlite->_sqlite = NULL;
    }
    
    buffer_dealloc(file);
    
    sqlite->uniqueKeys.exec = vmRuntimeContextGetUniqueKey(context, "exec");
    sqlite->uniqueKeys.query = vmRuntimeContextGetUniqueKey(context, "query");
    sqlite->uniqueKeys.lastRowId = vmRuntimeContextGetUniqueKey(context, "lastRowId");
    sqlite->uniqueKeys.encode = vmRuntimeContextGetUniqueKey(context, "encode");
    sqlite->uniqueKeys.sql = vmRuntimeContextGetUniqueKey(context, "sql");

    return rs;
}

void hdata_print_json(const hdata_class_t * data_class,hdata_t data,InvokeTickDeclare){
	if(data_class && DATA_STRUCT_ASSET(data)){
		hbuffer_t buffer = buffer_alloc(1024,  1024);
		hdata_write_json(data_class, data, buffer, hbool_true,InvokeTickArg);
		hlog("\n\n%s\n\n",buffer_to_str(buffer));
		buffer_dealloc(buffer);
	}
}

bool register_append(Register *reg, Text *txt, Filerange *range) {
	size_t rem = reg->size - reg->len;
	size_t len = range->end - range->start;
	if (len > rem && !buffer_alloc((Buffer*)reg, reg->size + len - rem))
		return false;
	reg->len += text_bytes_get(txt, range->start, len, reg->data + reg->len);
	return true;
}

hbool vmBinaryInit(vmBinary * binary,InvokeTickDeclare){
    mem_memset(binary, 0, sizeof(vmBinary));
    binary->uniqueKeys = buffer_alloc(1024, 1024);
    binary->classMetas = vmCompileObjectArrayCreate();
    binary->operatorMetas = vmCompileObjectArrayCreate();
    
    return hbool_true;
}

void enkf_fs_fwrite_restart_kw_list(enkf_fs_type * enkf_fs , int report_step , int iens, const stringlist_type * kw_list) {
  buffer_type * buffer = buffer_alloc(1024);
  stringlist_buffer_fwrite( kw_list , buffer );
  {
    fs_driver_type * driver = enkf_fs->index;
    driver->save_node(driver , "kw_list" , report_step , iens , buffer);
  }
  buffer_free( buffer );
}