JPH0962661A - Device and method for automatically discriminating code system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform the discrimination of a code system for which all character codes are made to be objects by analyzing input data and discriminating which of a JIS code, an EUC code and a shift JIS code the code system belongs to. SOLUTION: A data input means 1 inputs a data file 101 for which it is desired to discriminate which of the JIS code, the shift JIS code and the EUC code the code system belongs to. Then, a code system discrimination device 20 discriminates the code system of inputted data as the JIS code in the case of the JIS code by a first discrimination means 2 from the presence/absence of the peculiar character codes of the respective code systems including external character codes and the combination of the codes. When it is not discriminated as the JIS code in the first discrimination means 2, whether it is the shift JIS code or the EUC code is checked by a second discrimination means 3 and the shift JIS code and the EUC code are discriminated. Then, the discriminated result 201 is outputted from a discriminated result output means 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a code system automatic identification device, and more particularly to a code system automatic identification device for automatically identifying a code system including an external character.

[0002]

2. Description of the Related Art Conventionally, in this type of code system automatic identification apparatus, the code system is identified by excluding the external character code that each code system has.

[0003]

In this conventional code system automatic identification device, since the external character code is not used as an identification condition for identification, it may not be possible to identify when identifying the data containing the unique external character code. There is a problem.

[0004]

The automatic code system identifying apparatus of the present invention is a JIS code, a shift JIS code, an EU.
The data input means (1) for inputting the data file (101) to identify which C code is used, and the code system of the input data is the unique character code of each code system including the external character code. First identification means for checking whether or not it is a JIS code based on the combination of the presence or absence of the code and the code, and if it is a JIS code
(2) If the first identification means does not identify the JIS code, the shift JIS code or EU
Check if it is a C code, and if it is a shift JIS code,
It has a second discriminating means (3) for discriminating the shift JIS code and discriminating the EUC code when it is the EUC code, and discrimination result outputting means (4) for outputting the discrimination result.

[0005]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a flow chart showing the operation of the embodiment of FIG. 1 of the present invention.

Referring to FIG. 1, according to one embodiment of the present invention, any one of a data input device 10 for reading data in an input data file 101 and a JIS code, EUC code, or shift JIS code for analyzing the input data. The code system identification device 20 for identifying whether or not the code system and the result output device 30 for outputting the identification result 201.

The code system identification device 20 includes a first identification means 2 for identifying a JIS code, a shift JIS code,
The second identification means 3 for identifying the EUC code and the identification information holding unit 4 for holding the identification information are provided.

Next, the operation of the present embodiment will be described with reference to FIGS. 1 and 2.

The input data file 101 is read by the data input means 1 of the data input device 10 (step A1), and it is checked whether or not there is data (step A2). When there is data (when it is not the end), the data read in step A1 is supplied to the first identifying means 2. The input data of the first identifying means 2 is J
It is checked whether it matches the escape sequence of the IS code (step A3).

In step A3 of the first identifying means 2, if the input data matches the escape sequence of the JIS code, the result output device 30 is provided with the identification result that the input data is the JIS code, and the result output is performed. Device 3
0 outputs the identification result 201 (step A7).

In step A3 of the first identifying means 2, if the input data does not match the escape sequence of the JIS code, the second identifying means 3 receives the same data as the data supplied to the first identifying means 2. Supplied. The second identifying means 3 checks whether or not it matches the shift JIS code or a character code unique to the EUC code (step A4).

The unique character codes of the shift JIS code and EUC code will be described with reference to FIG.

The character code unique to the shift JIS code is
Shift JIS Kanji area 1 (8140 [Hex] ~ 9FF
C [Hex]) to EUC Kana / Kanji area 2 (8EA1)
[Hex] to 8EDF [Hex] and 8FA1 [He
x] to 8FFE [Hex]) and shift JIS
Kanji area 4 (E040 [Hex] to FCFC [He
x]) to EUC external character area 5 (A1A1 [Hex] to F
It is a part excluding EFE [Hex]).

EUC code The unique character code is EUC.
Kana / Kanji area 2 (8EA1 [Hex] to 8EDF [H
ex] and 8FA1 [Hex] to 8FFE [He]
x]) to shift JIS Kanji area 1 (8140 [He
x] to A0FC [Hex]) and shift from EUC external character area 5 (A1A1 [Hex] to FEFE [Hex]) JIS / EUC common area 3 (A1A1 [Hex])
~ DFFC [Hex]) and shift JIS Kanji area 4
It is a part excluding (E040 [Hex] to FCFC [Hex]).

In step A4 of the second identifying means 3,
When the input data matches the character code unique to the shift JIS code, the identification result 201 indicating that the input data is the shift JIS code is given to the result output device 30, and the input data matches the character code unique to the EUC code. If so, the identification result 201 that the input data is the EUC code is given to the result output device 30. The result output device 30 outputs the given identification result 201 (step A7).

In step A4 of the second identifying means 3,
If the input data is not identified by either the shift JIS code or the EUC code, it is checked whether the input data matches the character code of the common area of the shift JIS code or EUC code (step A5).

In step A5 of the second identifying means 3,
If the character code matches the character code in the common area of the shift JIS code and EUC code, information that the input data is not the JIS code is stored in the identification information holding unit 4 (step A6).

When the first identifying means 2 and the second identifying means 3 cannot identify any of the JIS code, the shift JIS code, and the EUC code, the next data is further read (step A1), and the identification is similarly repeated.

In step A2, if there is no read data, it is judged that all the identification has been completed, the identification information of the identification information holding section 4 is given to the result output device 30, and the result output means 5 identifies. The result 201 is output (step A7).

[0021]

As described above, the automatic code system identifying apparatus according to the present invention identifies the code system for all character codes including the external character code when the code system of the input data is unknown. It has an effect that can be performed.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a flow chart showing an operation of the embodiment shown in FIG.

FIG. 3 is a diagram showing a range of character codes of shift JIS code and EUC code.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 data input means 2 1st identification means 3 2nd identification means 4 identification information reservation part 5 result output means 10 data input device 20 code system identification device 30 result output device 101 input data file 201 identification result

Claims (3)

[Claims] 1. JIS code, shift JIS code, E
Data input means for inputting a data file to identify which one of the UC codes is used, and the code system of the input data is the combination of the unique character code of each code system including the external character code and the code. From the above, it is checked whether it is a JIS code, and if it is a JIS code, it is checked whether it is a first identification means for identifying it as a JIS code, and if it is not identified by this first identification means, it is a shift JIS code or an EUC code. , If it is a shift JIS code, shift JIS
A code system automatic identification device having a second identification means for identifying a code and, if it is an EUC code, an EUC code, and an identification result output means for outputting the identification result. 2. The shift J in the second identifying means.
The code system according to claim 1, wherein the IS code and the EUC code cannot be separated, but when the shift JIS code and the EUC code are common codes, it is stored as a non-JIS code before proceeding to the next step. Identification device. 3. JIS code, shift JIS code, E
Code system identification including data input means for inputting data for identifying any one of UC codes, code system identification means for identifying data code system, and identification result output means for outputting the identification result In the method, a first identification step of checking whether the data provided from the data input means is a JIS code based on the presence or absence of a unique code of the JIS code, and a shift JIS code based on the presence or absence of a unique code of the shift JIS code or EUC code, or A second identification step of checking whether it is an EUC code, and checking whether it is a code common to shift JIS code and EUC code, and if it is a code common to shift JIS code and EUC code, storing it as not a JIS code A code system automatic identification method including the identification step of 3.