JP2614361B2 - How to change file contents - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a file content changing method for changing a program or data stored in a system file or the like of an electric computer system or the like when updating the file.

(Prior Art) In a general computer system, a program file and a data file used are updated each time, for example, in order to improve a program or to add or delete data.

In particular, for programs and the like that perform predetermined tasks,
New requirements and inconveniences caused by use are sequentially improved, and so-called version upgrades are repeatedly performed. Hereinafter, a specific example thereof will be described.

First, FIG. 3 shows a block diagram of a general computer system. In the figure, a computer system 10 is connected to a center system 11 via a communication line 12.

The computer system 10 has a configuration in which a central processing unit (CPU) 2, a console 4, a hard disk device (HD) 5, and a floppy disk device (FDD) 6 are connected to a bus line 1.

Further, a main storage device (MEM) 3 is connected to the CPU 2.

Here, for the operation of the computer system 10, a system file (not shown) is created inside the hard disk device 5, and a program file and a data file are stored therein. The CPU 2 reads the program stored in the hard disk device 5, transfers it to the main storage device 3, and starts normal processing.

The system file stored in the hard disk device 5 is initially installed from the floppy disk device 6.

 FIG. 2 is a diagram illustrating an example of a conventional program update.

The installation of a program or the like in the system file of the computer system as shown in FIG.

FIG. 2A is a diagram for explaining the operation of the installation process.

In the figure, a file updating device A1 is composed of a storage medium such as a floppy disk, for example. Here, a command file C0, a version identification symbol V1, program files P1 and P2, and a data file D1 are stored. When the installation process is performed, the version identification code V1 and the program file P1 stored in the file updating device A1 are added to the system file 20 shown in FIG. 2 provided inside the hard disk device 5 as shown in FIG. , P2 and the data file D1.

That is, the command file C0 is the program file P
1, a command for controlling transfer of P2 and data file D1.

Here, FIG. 2B illustrates a program update process for performing the first version upgrade. In the figure, the file update device A2 includes a command file C1, a version identification symbol V2, a program file P1 ', and data files D2 and D3.

The command file C1 is the program file P1
P1 'is included, and an instruction to delete data file D1 and add data files D2 and D3 is included. When such a file update processing device A2 is operated, the system file 20 stores the version identification code V2, the program file P1'P2, and the data files D2 and D3.

FIG. 2C is an explanatory diagram of a program update process for performing the next version upgrade.

The illustrated file updating device A3 includes a command file C2. This command file C2 changes the program file P1 'to P1 "and changes the program file P2 to P2'.
To store the program file P3 and the data file D3 to D3 '. For this reason,
In the file updating device A3, in addition to the command file C2, the version identification symbol V3, the program files P1 ″, P2 ′, P3
And a data file D3 '. Then, using this file updating device A3, the system file 20 has a version identification code V3, a program file P1 ″, P
2 ', P3, and data files D2 and D3' are stored.

(Problems to be Solved by the Invention) By the way, usually, in an electronic computer system, a system file may be destroyed for some reason. In such a case, the system files must be restored. If the version V3 shown in FIG. 2 (c) is being used and it has been transcribed in advance to another floppy disk or the like and backed up, so-called backup will be performed from that floppy disk. Just do it. However, when no backup is performed, all the procedures shown in FIGS. 2 (a), (b) and (c) must be executed again. This is because the information about the file finally used in the version V3 is dispersedly stored in the file updating devices A2 and A3 used for the version upgrade.

In this way, when the installed version V1 is upgraded from version V1 to version V2, V3 again, the handling procedure of the file updating devices A2, A3 is erroneously mistaken and, for example, the program files are copied to P1, P1 ′, P1 ″. Should be updated in this order, whereas the file update devices A2, A
If 3 is used in reverse, there is a problem that it is updated in the order of P1, P1 ″, P1 ′. Further, there are also requests to return to the previous version for various reasons.
All of the file update devices A1, A2, A3 are intended only for version upgrade, and cannot be independently restored to the previous version. Therefore, in order to restore the version V3 to the version V2, it must be executed from the first installation process by the two procedures shown in FIGS. 2 (a) and 2 (b). In this case, when the number of version upgrades increases, the number of steps becomes extremely complicated.

The present invention has been made in view of the above points, and is intended for selecting a file updating device such as a floppy disk medium storing an improved program for restoring or upgrading the contents of a file such as a system file when the file content is destroyed. It is an object of the present invention to provide a file content changing method which aims to prevent errors in the file and to make the file contents easy to work when returning the file contents to the previous version.

(Means for Solving the Problems) In the file content changing method of the present invention, a storage means for storing storage instruction information, update instruction information, restoration instruction information, and data on which file contents are changed is prepared. . Then, when an operation based on the storage instruction information is instructed, a file indicated by the storage instruction information stored in the storage unit is generated, and the storage instruction stored in the storage unit is stored in the file. The data indicated by the information is stored. Further, when an operation based on the update instruction information is instructed, a file indicated by the update instruction information stored in the storage unit is found, and the content of the found file is stored in the storage unit. Update is performed based on the data and the update instruction information. Further, when an operation based on the restoration instruction information is instructed, a file indicated by the restoration instruction information stored in the storage unit is found, and the content of the found file is stored in the storage unit. Recovery is performed based on the data and the recovery instruction information.

(Operation) In this file content changing method, storage instruction information, update instruction information, restoration instruction information, and data serving as a basis for changing the file content are stored in advance in a storage means such as a floppy disk medium. Then, when an operation based on the storage instruction information is instructed, a file indicated by the storage instruction information stored in the storage means is generated, and the file indicated by the storage instruction information stored in the storage means is stored in the file. Store the data. Further, when an operation based on the update instruction information is instructed, a file indicated by the update instruction information stored in the storage means is found, and the contents of the found file are stored in the storage means. Update based on the instruction information. Further, when an operation based on the recovery instruction information is instructed, a file indicated by the recovery instruction information stored in the storage means is found, and the contents of the found file are stored in the above-described data stored in the storage means. Recovery is performed based on the instruction information.

Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings.

FIG. 1 is an explanatory diagram of an example of a program update by the apparatus of the present invention.

FIG. 1A is an explanatory diagram of an initial installation process, FIG. 1B is an explanatory diagram of a file update process, and FIG. 1C is an explanatory diagram of a file update process.

The file update device B1 is used for the installation process, and the file update device B2 is used for the file update process for updating from version 1 to version 2. In the file update processing for upgrading from version 2 to version 3, the file update device B3 is used.

The file updating device B1 itself is the same as the conventional one,
It is a device that processes only installation.

On the other hand, the file update devices B2 and B3 are provided with an install command file, an update command file, and a backward recovery command file, which are features of the present invention.

In FIG. 1A, the file updating device B1 has a configuration including a command file Ci0, a version identification symbol V1, program files P1 and P2, and a data file D1. The file update device B1 is formed of a storage medium such as a floppy disk, for example. Command file Ci
0 includes an instruction to install the program files P1 and P2 and the data file D1.

The system file 20 is provided, for example, inside the hard disk drive 5 of the computer system shown in FIG.

When the installation is performed on the initialized hard disk drive using the file updating device B1, the version identification code V1, the program files P1, P2, and the data file D1 are added to the system file as shown in FIG. Is stored.

On the other hand, the file update device B2 shown in FIG. 1 (b) stores an installation command file Ci1, an update command file Cu1, and a retraction recovery command file Cr1. Also, besides this, the version identification code V1, V
2, Program files P1, P1 ', P2 and data file D
1, D2, D3 are stored.

The installation command file Ci1 is a new version of the system file 20, that is, version V2 here.
Is a file containing instructions for installing the entire file. This instruction includes the program file P
Commands for installing 1 ', P2 and data files D2, D3 are included.

The update command file Cu1 is a file including a command for upgrading the target file stored in the system file 20. The target file refers to the file installed in the system file 20 in FIG. That is, the update command file Cu1 updates the program file P1 to P1 ', deletes the data file D1, and installs the data files D2 and D3.

Further, the backward restoration command Cr1 includes an instruction for restoring the new version of the file, which has been upgraded and stored in the system file 20, to the original target file. The new version here is the version
V2, the target file is version V1
Say that file. That is, the reverse recovery command file Cr1 includes a command for updating the program file P1 'to P1, installing the data file D1, and further deleting the data files D2 and D3.

The file update device B3 of FIG. 1C includes an install command file Ci2, an update command file Cu2, and a retraction recovery command file Cr2, like the file update device B2 described above. Then, the version identification symbols V2 and V3, and the program file P
1 ', P1 ", P2, P2', P3 and data files D2, D3, D3 'are stored.

The installation command file Ci2 installs the program files P1 ″, P2′P3 and installs the data files D2,
It contains instructions to install D3 '.

The update command file Cu2 updates the program file P1 'to P1 ", updates P2 to P2', installs the program file P3, and updates the data file D3.
Contains an instruction to rewrite to D3 '.

On the other hand, the reverse recovery command file Cr2 includes instructions for rewriting the program file P1 ″ to P1 ′, rewriting P2 ′ to P2, deleting the program file P3, and rewriting the data file D3 ′ to D3.

FIG. 1 (a) shows an example of using the above file updating device B2.
When the contents of the system file shown in FIG. 1 are upgraded, the version identification symbol V2, the program files P1 ', P2, and the data files D2, D3 are stored in the system file 20 as shown in FIG. When the version is updated using the file updating device B3, the version identification symbol V3, the program files P1 ", P2 ', P3, and the data files D2, D3 are stored in the system file 20.

FIG. 4 shows an installation process by the file updating device B1 shown in FIG. 1 (a) and installation commands Ci1 and Ci2 of the file updating devices B2 and B3 shown in FIGS. 1 (b) and (c).
9 shows an installation operation flow chart when is operated.

In the figure, for example, when the file updating device B1 is operated, first, the installation process of the version V1 (V2, V3) is executed (step S1), and thereafter, the version identification code V1 (V2, V3) is written (step S1). S2),
As described above, in the installation process, an operation of directly writing the program file, the data file, and the version identification code stored in the file updating device to the system file is performed. This operation can be directly performed independently by any of the file update devices B1, B2, and B3 in the present invention. Therefore, if the version V3 system file 20 is destroyed, the file update device B3
Only that can be restored. For this purpose, each file updating device B1, B2, B3 stores all program files, data files and version identification symbols required for the versions V1, V2, V3, respectively.

Next, an operation for returning the version to the previous version will be described. At this time, for example, the backward restoration command file Cr1 of the file updating device B2 shown in FIG. 1B is operated. In this case, the file updating device B2 stores the program files P1 and P2 and the data file D1 and the version identification symbol V1 required for the version V1.
Therefore, the version of the system file 20 can be updated only by the file
It is possible to return from V2 to V1. File update device B3
The same can be said for.

The command files for update Cu1 and Cu2 are used for version upgrade. The contents and operation are exactly the same as those of the conventional apparatus described with reference to FIG. Here, the present invention can further add the following check function and prohibit processing such as erroneous version upgrade.

 FIG. 5 shows a flowchart of the check operation.

In the present invention, in other words, when executing a process such as version upgrade, the version identification symbols V1, V2, V3 written in the system file are read in advance, and an erroneous process is performed in consideration of the contents thereof and the contents of the instruction. They are banned.

That is, as shown in FIG. 5, when the file update processing from, for example, version 1 to version 2 is started in step S1, first, the version identification symbol of the file is changed to
It is determined whether or not the file is V1 (step S2). If the file identification code is V1, the update process is completed (step S4). The process is stopped (step S3), whereby erroneous processing is prevented beforehand.

 FIG. 6 is an explanatory diagram of such a check function.

In the figure, the updated contents are version V1 to V
2, V2 to V1, V2 to V3, V3 to V2, etc., the allowed version identifiers are V
1, V2, V3 and so on. That is, if the processing target does not include these version identification symbols, the processing is prohibited.

 The present invention is not limited to the above embodiments.

In the embodiment of FIG. 1, the versions are set as V1, V2, V3, but a file updating device may be provided for each of more versions. Further, the file updating device does not necessarily have to be physically stored integrally in a medium such as one floppy disk, but may be divided and stored in several floppy disk devices. . Further, it may be stored in various storage devices other than the floppy disk device, for example, in a form that can be installed in an IC card or other system files.

(Effect of the Invention) In the file content changing method described above, first, storage instruction information, update instruction information, restoration instruction information, and data are stored in a storage unit such as a floppy disk. Then, a file is generated based on the storage instruction information, and the above-described data is stored in the file. Further, based on the update instruction information, a file is found, and the content of the found file is updated with the above-mentioned data. Further, based on the restoration instruction information, a file is found, and the contents of the found file are restored using the above-mentioned data. Therefore, for example, only the latest floppy disk or the like that stores the above-mentioned instruction information and data is stored, so that installation in the case of destruction of system files, update and restoration to a new or old version, etc. can be performed. Since it becomes possible, it is not necessary to store the floppy disks and the like of all the versions, so that storing and managing the floppy disks and the like become easy. Also, when restoring after system files are destroyed or when returning from a new version to the previous version, file restoration and updating can be performed using only the above-mentioned floppy disk etc. without performing the sequential update process from the first version. As a result, recovery and updating can be performed in a short time.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an example of a program update by the apparatus of the present invention,
FIG. 2 is an explanatory view of a conventional program updating example, FIG. 3 is a block diagram of a general computer system, FIG. 4 is an installation operation flowchart of the present invention, FIG. 5 is a check operation flowchart of the present invention, and FIG. FIG. 4 is an explanatory diagram of a check function of the present invention. 20 System file B1, B2, B3 File update device Ci0, Ci1, Ci2 Install command file Cu1, Cu2 Update command file Cr1, Cr2, Recover command file V1, V2, V3: Version identification code, P1, P2, P1 ', P2', P1 ", P3 ... Program file, D1, D2, D3, D3 '... Data file.

Claims (2)

(57) [Claims] 1. A file contents changing method for changing contents of a file based on data stored in a storage means, wherein the storage means stores storage instruction information, update instruction information and recovery instruction information in the data. When an operation based on the storage instruction information is instructed, a file indicated by the storage instruction information stored in the storage unit is generated, and stored in the file in the file. When the operation based on the update instruction information is instructed, the file indicated by the update instruction information stored in the storage unit is found, and the file of the found file is The content is updated based on the data and the update instruction information stored in the storage unit, and an operation based on the restoration instruction information is instructed. In the case, a file indicated by the restoration instruction information stored in the storage unit is found, and the content of the found file is restored based on the data and the restoration instruction information stored in the storage unit. A file content changing method characterized by the following. 2. A version identification code is further stored in the storage means, and when an operation based on the storage instruction information is instructed, the version identification code is stored in the storage means together with the data stored in the storage means. When the operation based on the update instruction information or the recovery instruction information is instructed, the version identification number stored in the file and the storage unit are stored in the storage unit. Determining whether or not the operation is possible based on the stored version identification code, and when determining that the operation is allowable, performing the update or the recovery and performing the version identification stored in the storage means. 3. The method according to claim 1, wherein a symbol is stored in the file.