JP2001142754A - File editing system for flexible disk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an editing system which makes it possible to edit flexible disks having different formats and/or character codes without requiring conversion programs corresponding thereto individually nor taking any trouble for repetitive conversion. SOLUTION: Pieces of format information and character code information are saved in the form of a format table 23 and a character code conversion table 24 and files can be read out by means corresponding to the respective formats and character codes, so the files can be read in whatever format and character code they are saved. Format information and character code information used when a file is read out are stored and then used to write the file out, so the file having been edited can be written to the flexible disk where the file is read out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible disk file editing system.

[0002]

2. Description of the Related Art A conventional flexible disk file editing system cannot directly edit a file created by a system having a different format and / or character code. In order to edit a flexible disk whose format and / or character code is different from the format and / or character code desired by the user, the format and / or character code of the system in which the flexible disk is created may be changed by the user. Conversion must be performed using a conversion program corresponding to each of the formats and / or character codes. Also, since the edited program edited as described above cannot be recognized in the format before conversion, the converted file desired by the user is stored again on the flexible disk before conversion again. Conversion to a format and / or character code and using another conversion program was required.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the prior art, and does not require an individually corresponding conversion program, and does not require the trouble of re-conversion. It is an object of the present invention to provide a flexible disk file editing system which enables editing of a flexible disk having a different format and / or character code, thereby improving convenience.

[0004]

According to a first aspect of the present invention, there is provided a flexible disk having a central processing unit, a storage device, and a terminal device and stored in different formats and / or character codes. A file editing system for a flexible disk, characterized in that a single system can read and write to files in the file.

Therefore, according to the flexible disk file editing system of the first invention of the present application, a single system can read and write files in the flexible disk stored in different formats and / or character codes. Therefore, there is an advantage that the trouble of re-conversion can be eliminated.

According to a second invention of the present application, in the file editing system for a flexible disk according to the first invention of the present application, the storage device has a format table,
A character code conversion table is provided.

Therefore, according to the file editing system for a flexible disk of the second invention of the present application, by providing a format table and a character code conversion table, a plurality of formats and character codes can be stored and corresponded individually. There is an advantage that no conversion program is required.

According to a third aspect of the present invention, in the file editing system for a flexible disk according to the first or second aspect of the present invention, the central processing unit includes a format determination control means, The control means determines the type of the format of the file stored on the flexible disk.

Therefore, according to the flexible disk file editing system of the third invention of the present application, since the type of the format of the flexible disk is determined, a reading conversion program corresponding to each is not required.

In a fourth aspect of the present invention, in the file editing system for a flexible disk according to any one of the first to third aspects of the present invention, the central processing unit includes a character code determination control unit. With
The character code determination control means determines the type of character code of a file stored on a flexible disk.

Therefore, according to the flexible disk file editing system of the fourth invention of the present application, the character code determination control means determines the type of the character code of the file stored on the flexible disk. Does not require a conversion program for reading.

According to a fifth aspect of the present invention, in the file editing system for a flexible disk according to any one of the first to fourth aspects of the present invention, the central processing unit includes a file reading control unit and a reading unit. With character code conversion control means, while the character code conversion control means temporarily converts the characters of the file stored on the flexible disk to predetermined characters,
The file reading control unit reads the temporarily converted file of predetermined characters.

Therefore, according to the flexible disk file editing system of the fifth invention of the present application, even a file having a different format and / or character code is converted into a predetermined format and character code. There is an advantage that a single file can be read by one system.

According to a sixth aspect of the present invention, in the file editing system for a flexible disk according to any one of the first to fifth aspects of the present invention, the central processing unit includes a file writing control unit and a writing character. Code conversion control means, and the character code conversion control means converts the temporarily converted predetermined characters into characters of a file stored on a flexible disk, and after the conversion, the file write control means Is written in a file in the flexible disk.

Therefore, according to the file editing system for a flexible disk according to the sixth aspect of the present invention, the format and / or character code originally stored in the flexible disk are determined from the format and / or character code of the system used by the user. There is an advantage that one system can write to a file format of any format and character code in order to convert the character code.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A flexible disk file editing system according to an embodiment of the present invention will be described below with reference to the drawings.

Embodiment 1 FIG. 1 is a block diagram showing a configuration of a flexible disk file editing system according to an embodiment of the present invention.
As shown in FIG. 1, an embodiment of the present invention includes a central processing unit 10 that executes control and processing of the entire system, a storage device 20 that stores information, a terminal device 30 that inputs instructions and the like, And a flexible disk 40 in which files are stored.

The storage device 20 will be described. The storage device 20 includes a file editing program 21, an edited file storage area 22, a format table 23, a character code conversion table 24, and a format information storage area 2.
5 and a converted character code storage area 26. The file editing program 21 is a program for editing a file operating on the information processing system. The edit file storage area 22 stores the file edit program 2
1 is an area for temporarily storing a file to be edited. The format table 23 stores various format information for mutually converting the format of the flexible disk used in various systems and the format of the system currently used. The character code conversion table 24 stores a character code table for mutually converting a character code used in various systems and a character code of the system currently used. The format information storage area 25 is an area for storing format information of a flexible disk that is input and output by the format determination control unit 13. Conversion character code storage area 2
Reference numeral 6 denotes an area for storing character code information used in a file to be input / output by the character code determination control unit 14.

The central processing unit 10 will be described. The central processing unit 10 includes a program activation control unit 11, a command / information input control unit 12, a format determination control unit 13, a character code determination control unit 14, a file read control unit 15, a read character code conversion control unit. 16, a file writing control unit 17, and a writing character code conversion control unit 18. The program start control means 11 starts the program in response to a file edit program start request from the terminal device 30. The command / information input control unit 12 receives from the terminal device 30 the file read, file write, and other edit commands and the edit information of the edit command and passes the edit command and the edit information to the file edit program 21. It is for. The format determination control unit 13 executes a format information read command of the flexible disk 40 using the format table 23 in response to a format determination request from the file editing program 21. After that, the format information of the execution result is stored in the format information storage area 2.
5 and a process of notifying the file editing program 21 of a "completion" signal as an execution result. In response to a character code determination request from the file editing program 21, the character code determination control means 14 converts the character code information by referring to the character code conversion table 24 using the format information stored in the format information storage area 25. It is stored in the character code storage area 26. Then, a process of notifying the file editing program 21 of a “completion” signal as an execution result is performed. File read control means 15
Is for executing a process of reading a file from the flexible disk 40 in response to a file read request from the file editing program 21 and passing the result to the file editing program 21. The read character code conversion control means 16 performs a character code conversion on the read side for the passed file in response to a character code conversion request from the file read control means 15, and passes the result to the file read control means 15. To do. The file writing control unit 17 performs a process of writing the file passed in response to the file writing request from the file editing program 21 to the flexible disk 40 and notifying the file editing program 21 of “completion” as an execution result. Things. The writing character code conversion control unit 18 performs a writing-side character code conversion on the passed file in response to a character code conversion request from the file writing control unit 17, and outputs the result to the file writing control unit 17.
This is for performing the process of passing to.

Next, the terminal device 30 and the flexible disk 40 will be described. The terminal device 30 is a terminal for issuing an instruction to the system main body using a keyboard, a mouse, or the like. The flexible disk 40 is an external storage device such as a floppy disk.

Next, the operation will be described.

First, the file editing program 21 is started. When the terminal 30 issues a request to start the file editing program 21, the program start control unit 11 receives the instruction from the terminal device 30 and starts the file editing program 21.

Next, an editing command such as reading of a file and writing of a file from the terminal device 30 and a request for editing information are issued. The command / information input control means 12 receives the request from the terminal device 30 and sends the received editing command and editing information to the file editing program 21. File editing program 21 receiving an editing instruction and editing information
Sends a format determination request to the format determination control means 13 and issues a character code determination request to the character code determination control means 14.

The format determination control means 13 executes a format information read command for the flexible disk 40 using the format table 23 in response to the format determination request. The format determination control unit 13 executes a format information read command and receives a format name. Thereafter, the format determination control means 13 stores the format information corresponding to the received format name in the format information storage area 25 while referring to the format table 23. Next, a “completion” signal is notified to the file editing program 21 as a result of executing the format determination request.

Further, the character code determination control means 14 having received the character code determination request from the file editing program 21 determines the character code. The character code determination control means 14 stores the character code information corresponding to the stored format information in the converted character code storage area 26 while referring to the format information stored in the format information storage area 25 and the character code conversion table 24. I do. After that, a “completion” signal is notified to the file editing program 21 as a result of executing the character code determination request.

The file read control unit 15 receives a file read request from the file editing program 21 and reads a file stored in the flexible disk 40 based on the format information stored in the format information storage area 25. The file is read, the file is received, and the file is sent as a parameter to the read character code conversion control means 16.

The read character code conversion control means 16
The file is received as a parameter from the file read control unit 15. Read character code conversion control means 1
Reference numeral 6 uses the character code information stored in the converted character code storage area 26 to convert the character code of the file on the reading side into the character code used in the current system. Thereafter, the read character code conversion control means 16
Returns the control to the file read control means 15.

Further, read character code conversion control means 1
After the completion of the processing of step 6, the file reading control means 15
The file subjected to the character code conversion is transferred to the edited file storage area 22 via the file editing program 21.

If the command received from the command / information input control means 12 is a command for editing a file, the file editing program 21 edits the file stored in the edited file storage area 22. Do.

The file writing control means 17 receives the file writing command and the file from the file editing program 21, and passes control to the writing character code conversion control means 18 using the file as a parameter.

The writing character code conversion control means 18
A file as a parameter is received from the file writing control unit 17. Using the same character code as the reading-side character code stored in the converted character code storage area 26, the file is subjected to the writing-side character code conversion, and control is returned to the file writing control unit 17.

The file writing control means 17 receives the file as an execution result, and writes the file to the flexible disk 40 using the format information stored in the format information storage area 25. After writing the file, a “completion” signal is notified to the file editing program 21 as an execution result.

With the configuration and operation described above, it is possible to edit files on a flexible disk formatted in a plurality of formats on a single system. It is also apparent that the file saved on the flexible disk can be edited in the same manner as the system used by the user, or in a similar manner or by omitting the route.

[0034]

As described above, since a plurality of format information and character code information are stored as a table and a file can be read out by means corresponding to each format format and character code, any format format and character code can be read. Enables reading of files even if they are stored in character codes. It also stores the format information and character code information used when the file was read, and writes the edited file to the flexible disk from which the file was read in order to write the file using that information. Allows you to export. As a result, a flexible disk having a different format and / or a different character code can be edited without requiring a corresponding conversion program, and without having to perform conversion again.

[0035]

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a flexible disk file editing system according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Central processing unit 11 Program start control means 12 Command / information input control means 13 Format judgment control means 14 Character code judgment control means 15 File read control means 16 Read character code conversion control means 17 File write control means 18 Write character code conversion control Means 20 Storage device 21 File editing program 22 Editing file storage area 23 Format table 24 Character code conversion table 25 Format information storage device 26 Converted character code storage area 30 Terminal device 40 Flexible disk

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5B082 GA02 5D044 BC01 CC04 DE04 DE22 DE49 EF05 FG19 GK11 5D110 AA13 BB20 BC11 BC14 CA16 CA47 CB04 CD15 CF13 CJ13 DA01 DA11 DA14 DC28 DD13 DE02 DE04

Claims (6)

[Claims] 1. A system comprising a central processing unit, a storage device, and a terminal device, wherein a single system can read and write files on a flexible disk stored in different formats and / or character codes. A flexible disk file editing system. 2. The flexible disk file editing system according to claim 1, wherein said storage device includes a format table and a character code conversion table. 3. The apparatus according to claim 1, wherein the central processing unit includes a format determination control means, and the format determination control means determines a type of a format of a file stored on the flexible disk.
A file editing system for a flexible disk according to claim 2. 4. The apparatus according to claim 1, wherein the central processing unit includes character code determination control means, and the character code determination control means determines a type of a character code of a file stored on a flexible disk. The flexible disk file editing system according to any one of claims 1 to 3. 5. The central processing unit includes a file read control unit and a read character code conversion control unit, and the character code conversion control unit temporarily stores characters of a file stored in a flexible disk in a predetermined format. 5. The flexible disk file editing system according to claim 1, wherein the file is read and the file read control unit reads the temporarily converted file of the predetermined character. . 6. The central processing unit includes a file writing control unit and a writing character code conversion control unit, and the character code conversion control unit stores the temporarily converted predetermined characters on a flexible disk. 6. The flexible disk file editing system according to claim 1, wherein the file writing control unit converts the characters into characters of the converted file and writes the converted characters into a file in the flexible disk after the conversion. .