Now you can handle such tasks as: Interaction with specialized devices using a binary protocol File parsing and operations with files in different formats Converting text data to binary data directly, for example, to send reports Working with binary data in the memory Previously, the platform had a number of methods available for working with files and the BinaryData type.
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But they did not provide any easy way to analyze the internal contents or modify it. All actions were performed for all data at the same time.
The only operation that could be done with a portion of the data is splitting a file into parts and putting it back together. Now the platform provides tools both for sequential operations with large amounts of binary data and random access to relatively small amounts of binary data entirely in RAM.
Main types of sequential operations with data A specific example is the easiest way to demonstrate the purpose and interconnection of new objects.
The example splits a WAV file into the same 1,byte parts. The diagram shows the usage sequence for 1C:Enterprise script objects corresponding to the listing.
Close ; The basis for working with binary data is a group of new types, which can be referred to as "streams". The example uses one of them, FileStream, but the rest mainly operate in the same way.
Their advantage is that they allow you to work with arbitrary amounts of data streams. But they binary options 1c only basic features, such as reading from a stream, writing into a stream, and changing the current position seek. Streams can be created by file name or from the BinaryData object. In the example, the stream is created by file name Binary options 1c. This is a new way to create streams, and we will tell you more about it in the future. Then, in order to have more extensive opportunities for work, DataReader New Binary options 1c SourceStream object is created from the file stream.
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This object allows you to read the individual bytes, characters, and numbers. You can use it to read a string taking into account the encoding, or read the data up until a binary options 1c marker known in advance.
This object has its "opposite", DataWriter, which is created in a similar way but writes data instead of reading. In the example, DataReader is used for two purposes.
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Firstly, in order to read and edit the file header, and secondly, in order to split the file into several parts. The file header is the BinaryDataBuffer object. This is an important object, but we will talk about it a little later.
System requirements Functional options Functional options are one of the development tools. They define whether specific functionality is available in a configuration, based on the needs of the company where the configuration is deployed.
The body of the file is divided into parts of equal size DataReader. This type has no special features, and mostly just stores the read data.
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Next, for every such part binary options 1c the file in the example, FileStream for writing is created, and on its basis, DataWriter is created. Writing the data writes a new header and a new body to the stream, and closes it.
At the end of the cycle, the result is a set of several files.
The main difference of this object from the above is that it provides not sequential, but random access to data, and lets you modify the data at any position. All data from this object are entirely located in the RAM. Therefore, on the one hand, it is designed for analyzing and editing of not very large amounts of binary data.
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But on the other hand, it provides convenient options for random reading and writing of bytes represented by numbers, for splitting the buffer into several parts and combining multiple buffers in one, as well as for getting a part of the buffer of the specified size. Turning a picture by 90 degrees can be used as an example to illustrate binary options 1c capabilities of the binary data buffer. Asynchronous methods are needed in order to be able to work in the same way in the thin client, as well as in the web client because browsers use an asynchronous model.
Synchronous methods are required for working in the server context because the server uses only the synchronous model. Stream manager and asynchronous constructors In addition to the listed objects, we have also implemented FileStreamsManager that exists in a single instance and is available through the property of the global context.
As we have previously mentioned, streams require both synchronous and asynchronous operation. We created asynchronous counterparts for the synchronous methods, however, this approach is not suitable for constructors. Object constructors can only run synchronously.
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Therefore, in order to enable asynchronous object creation, we implemented a manager with asynchronous methods that, essentially, use different ways to create a FileStream object.
And for the sake of aesthetics and symmetry, we have added similar synchronous methods. They illustrate the implementation of a task, which we were often asked about.
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