JPH01112425A - Program source filing maintaining system at time of editing by editor - Google Patents

Abstract

PURPOSE:To prevent the invalidity of an editing processing by comparing a final updating date at the time of the input and the date of the output at the time of editing a program source file. CONSTITUTION:In an input program source file date securing processing, an editor 4 obtains the final updating date of a program source file 6 from a date storing area 7 through an operating system 5 having a filing control means to hold the final updating date. In an output program source filing date securing processing, a user executes the program source writing request to the editor 4 and obtains the final updating date of the program source film 6 through the operating system 5. A pair of the obtained dates is compared, and both are coincident, and then, a file writing processing is processed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a program source file preservation method when editing with an editor.

(Prior Art) Conventionally, when editing and updating a program source file with an editor, it is known to read the program source file, edit and update it, and then write it into the same program source file.

In managing program source files during editor editing as described above, a method as shown in FIG. 3, for example, is conventionally known.

That is, after starting the editor, in order to edit and update the program source file, when a request to read the program source file is sent, the program source file is once read into the editor work area by the input program source file reading process F1. Thereafter, an editing process F2 for editing and updating the file is executed. Thereafter, when a file write request is sent, the output program source file write process F3 directly writes to the original program source file.

(Problem to be Solved by the Invention) In the conventional program source file management during editor editing described above, when a file write request is sent, data is unconditionally written directly to the original program source file. Therefore, for example, while one user is editing or updating a program source file for a long time, another user can quickly start reading the input program source file, editing it, and then writing the output program source file. There is a drawback that if the former user performs an output program source writing process after the transfer, the latter editing process becomes invalid.

An object of the present invention is to
By comparing the last update date of the program source file when inputting the program source file with the date of output of the program source file, the above drawbacks can be eliminated, and the same program source file can be edited by multiple users. An object of the present invention is to provide a program source file preservation method when editing with an editor, which is configured so that editing processing is not invalidated.

(Means for Solving the Problems) The method for preserving program source files when editing with an editor according to the present invention includes a main storage device for storing an operating system together with an editor, and a central processing unit for preserving input program source files. It is configured with the following.

The main storage device is for storing the operating system together with the editor. The operating system has a file management means that maintains the last update date for each program source file, and input program source files are stored in the editor. This is a book for reading into a work file, editing and updating the contents of the work file, and then writing the updated contents to the file along with the first date.

On the other hand, the central processing unit maintains the input program source file, and after reading the input program source file into a work file, acquires and edits the second date when the input program is last updated. If there is a file write request, compare the first and second dates, write to the file if they match, and output a warning message if they do not match. It is configured so that it can be done.

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

FIG. 1 is a block diagram showing an embodiment of an information processing apparatus to which a program source file for editor editing according to the present invention is applied. In FIG. 1, 1 is a central processing unit, 2 is a main memory, and 3 is a disk-shaped file. The main storage device 2 is provided with an editor 4 and an operating system 5 having a file management means for retaining the last updated date of the dish. The file 3 is provided with a program source file 6 and a date storage area 7.

FIG. 2 is a flowchart showing an example of program source file preservation among the processes performed by the editor 4. In Fig. 2, the processing includes input program source file reading processing (81), input program source file date securing processing (S2), editing processing (S3), output program source file date securing processing (S4), and date comparison processing. process(
S5), file writing processing (S6), and warning message output processing (S7) are executed in this order. The details of each process are as follows.

In the input program north file reading process (Sl), after starting the editor, an input request is sent to the editor in correspondence with the program source file to be edited or updated. The editor reads the program source file 6 in the disk-shaped file 3 via the operating system 6.

Input program source file date is secured (S2)
In the editor, the last update date of the program source file 6 is obtained from the storage area 7 via an operating system having a file management means that holds the last update date.

In the editing process (S3), editing processes such as changing, deleting, or adding the input program source file are performed.

The output program source file date is secured (S4)
In , the user sends a program source file write request to the editor. At this time, the editor obtains the last update date of the program source file 6 from the date storage area 7 via the operating system 5 having a file management means that holds the last update date.

In the comparison process (S5), the date is acquired by the input program source file date and the securing process (S2), and the output program source file date is acquired by the securing process (84), and the next pair of dates are compared. If the two do not match, it is assumed that the program source file 6 has been edited by another user in the editing process (S3), and the process proceeds to a warning message process (S7).

On the other hand, if the two match, it means that the program source file has not been modified by another user. At this time, the process advances to file writing processing (S6).

In the file writing process (S6), the edited file is written to the program source file 6 via the operating system 5, which has a file management means that retains the last updated date. At this time, the date written on the 9th day is held in the storage area T as the last updated date.

In the warning message processing (S7), another user may delete the program source file 6 during the editing processing (S3).
Since the program has been modified, the program source file 6 is written after outputting the message therein.

(Effects of the Invention) As explained above, the present invention is advantageous in that when editing a program source file, the last updated date of the program source file at the time of inputting the program source file is compared with the date of outputting the program source file. , This has the effect that even if another user edits and updates the same program source file during editing, it will not become invalid.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a program source file preservation method when editing with an editor according to the present invention. FIG. 2 is a flowchart showing the processing of the embodiment shown in FIG. FIG. 3 is a flowchart showing processing according to the prior art. 1...Central processing unit 2...Main storage device 3...Member file 4...Editor 5...Operating system 6...Program source file T...Date is storage area Patent applicant NEC Corporation Agent Co., Ltd. Patent Attorney Hisashi Inoro 21Figure 23

Claims (1)

[Claims] A file management means that maintains the last update date for each program source file is provided, and the input program source file is read into a work file in the editor, the contents of the work file are edited and updated, and then the update is performed. a main storage device for storing an operating system that writes the contents of the input program into a file along with a first date; and a main storage device for storing an operating system together with the editor; Obtain and edit the second date, and when a file write request is received, compare the first and second dates, and if they match, write to the file, A program source file preservation method when editing with an editor, comprising: a central processing unit for preserving the input program source file by outputting a warning message when the coincidence cannot be obtained. .