JPH03259327A - Code conversion system - Google Patents

Abstract

PURPOSE:To perform code conversion without being consious of a code system by providing plural code table conversion table groups in accordance with the code systems, and selecting and using the code conversion table of the code system conforming to the operational environment of a user program. CONSTITUTION:Assuming that a code is decided as, for example, a Chinese language code, the code system is informed to a code conversion table selection means 4. When the means 4 is started up by the user program 1, the Chinese language code informed from an operation code system deciding means 3 is selected from the code system identification code of a code conversion table storage means 6, and a correspondent conversion table group is informed to a code conversion means 5. The means 5, after performing the code conversion from one-byte code conversion to two-byte code conversion used actually from the code conversion table groups of the Chinese code system corresponding to the request of the program 1, returns a result to user data 2. Thereby, it is possible to perform required code conversion without being conscious of the code system by the user or the user program.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a code conversion method, particularly in an information processing device.
This invention relates to a code conversion method when code conversion, such as converting user data codes to system internal codes, is handled for multiple code systems in the same system.

[Conventional technology]

Conventionally, in this type of code conversion method, the user selects a code conversion table to be used, keeping in mind the code system, and performs code conversion.

[Problem to be solved by the invention]

In the conventional code conversion method described above, the user must always be aware of the code system when using it, which can be troublesome and cause errors, and furthermore, a user program must be prepared for each code system. There is a complication.

[Means to solve the problem]

The code conversion method of the present invention is started from a user program and converts the code of user data, and the code conversion table stores a plurality of code conversion tables belonging to each of a plurality of code systems in a storage area. a storage means, and an operation code that determines a code system to operate according to a preset priority order from at least the type of terminal of the user program, the operating environment of the system, the operating environment instructed by the user program, and the code system of user data. system determination means; code conversion table selection means for selecting a code conversion table specified by the user program from among the code systems specified by the operation code system determination means; and code conversion selected by the code conversion table selection means. and a data conversion means for inputting a table and converting the code of user data.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention, including a user program 1, user data 2, operation code system determining means 3, code conversion table selection means 4, data conversion means 5, and code conversion table storage means 6. It consists of

FIG. 2 is a diagram showing an example of the stored contents of the code conversion table storage means 6 shown in FIG. 1, in which a plurality of code conversion tables are stored in advance under code system identification codes indicating a plurality of code systems. . In the example shown in FIG. 2, each code system such as Japanese or Chinese has a conversion table from 1-byte code to 2-byte code, a conversion table from 2-byte code to 1-byte code, etc. Note that a collection of different types of code conversion tables under one code system is called a code conversion group.

Now, this embodiment will be described using as an example a case where 1-byte user data input from a Chinese language terminal is code-converted into 2-byte user data through a user program. First, the operation code system determining means 3 determines the operation code system based on the operating environment such as the type of terminal and the installation location of the system, the operating environment specified by the user program 1 in the job control language (JCL), and the code system of the user data 2. etc., according to predetermined priority rules.

Here, if it is determined that "Chinese code" is determined as a result, this code system is notified to the code conversion table selection means 4.Next, when the code conversion table selection means 4 is started from the user program 1, the operation code system is The "Chinese code" notified by the determining means 3 is selected from the code system identification codes in the code conversion table storage means 6, and the corresponding code conversion table group is notified to the data conversion means 5. Next, the data conversion means 5, in response to a request from the user program 1,
Select the code conversion table from the 1-byte code to 2-byte code that is actually used from the code conversion table group of the Chinese code system, input the user data 2, perform the code conversion, and then display the result. Return to user data 2.

Note that the code conversion table storage means 6 may exist partially or completely in memory or in a file, and if all code conversion tables are prepared in a file, the code conversion table storage means 6 may store all or part of the code conversion table in memory or in a file. It is easy to read only the code conversion table of the system into memory at the time of system construction and perform high-speed processing.

〔Effect of the invention〕

As explained above, the present invention has a plurality of code table conversion table groups corresponding to code systems, and allows the user or The user program can perform necessary code conversion operations without being aware of it, and it also has the effect of allowing user data with different code systems and user programs that want to operate under different code systems to be handled simultaneously within the same system. be.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a diagram showing an example of the stored contents of the code conversion table storage means of FIG. 1. 1... User program, 2... User data, 3
...Operation code system determining means, 4. Code conversion table selection means, 5. Data conversion means, 6. Code conversion table storage means.

Claims (1)

[Claims] In a code conversion method that is started from a user program and converts the code of user data, a code conversion table storage means that stores a plurality of code conversion tables belonging to each of a plurality of code systems in a storage area, and at least a user program. an operation code system determining means for determining a code system to operate according to a preset priority order from the terminal type, the system operating environment, the operating environment instructed by the user program, and the user data code system; A code conversion table selection means selects a code conversion table specified by the user program from among the code systems specified by the system determination means, and the code conversion table selected by the code conversion table selection means is inputted and the user data is 1. A code conversion method comprising: data conversion means for converting a code.