JPH06243020A - File conversion device - Google Patents

Abstract

PURPOSE:To save time and labor to be conscious of/recognize a file system at the time of storing/fetching a file in a network system sharing a file server connected to a network with data processors which are connected the same to the network and whose architecture differ. CONSTITUTION:At the time of storing the file in the file server, a file attribute information addition means 11 adds file attribute information to the file becoming an object and transmits it. At the time of fetching the file from the file server, a judgement means 12 refers to file attribute information of the file becoming the object and judges whether the file concerned can be converted into the file system that can be treated in the data processor on a fetching-side or not. When it is judged to be convertible, a file conversion means 13 converts it into the file system of the data processor on the fetching-side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file conversion system in the case where a file server connected to a network is shared by data processing devices of different architectures which are also connected to the network.

[0002]

2. Description of the Related Art Today's computer environment is becoming more networked, and data processing devices having different architectures, such as personal computers and workstations, are connected to the same network and share resources such as large-capacity file servers and printers. Is increasing. In particular, a file server is often shared in the sense that each client computer can use it not only as its own file server but also from another different computer.

[0003]

However, taking a text file containing only character information as an example, a shift JIS code is used in a PC and an EUC code is used in a UnixWS, which cannot be simply shared. So, in the past, after identifying the type of computer you want to share, you should convert the file when storing the file, and check what kind of file is stored in the file server before you extract the file. I used a technique such as file conversion to a file format that my computer can handle. As described above, conventionally, there has been a problem that the user's burden is heavy, for example, the file format of the shared computer must always be taken into consideration, and the format of the stored file must be checked every time. It was

An object of the present invention is to provide a file conversion device capable of reducing the burden on the user by automatically converting the file format when storing or retrieving a file.

[0005]

In order to solve the above problems, in a file conversion apparatus according to the present invention, when a file is stored in a file server, file attribute information indicating the file format of the file is added to the file. When the file is retrieved from the file server by referring to the file attribute information adding means to be attached, whether the file can be converted into a file format that can be handled by the data processing device on the retrieval side is referred to. And a file conversion means for converting the file format of the target file into the file format of the data processing device on the take-out side when the determination means determines that the file can be converted. And

[0006]

When the file is stored in the file server, the file attribute information is added to the file to be stored and the file is sent to the file server. Also, when retrieving a file from the file server, the file attribute information held by the system is acquired, the file attribute information of the target file is also acquired, and the target file can be handled by the data processing device on the retrieval side. Determines if the format can be converted. If the result of this determination is that conversion is possible, the file format of the target file is converted to the file format of the data processing device on the fetching side. If conversion is not possible, a message to that effect is displayed, or no conversion is performed and extraction is continued.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a file conversion device according to the present invention will be described below with reference to the drawings.

FIG. 2 is a block diagram showing the basic construction of a workstation equipped with the file conversion device according to the present invention.

The display unit 1 includes a display screen such as a CRT, and a container list (file list) is displayed on the screen.
Display windows etc.

The window system control unit 2 manages the display of a plurality of application windows displayed on the screen.

The keyboard 3 is an input device for inputting data such as commands and character strings, and is connected to a mouse 4 for selecting instructions on the screen. Various data and instructions input from the keyboard 3 and the mouse 4 are sent to the central processing unit 10 through the input control unit 5.

The external storage device 6 is a magnetic disk or the like.
It is composed of the following storage device. The files stored in the file server and the retrieved files are stored in predetermined storage areas. The open / close of the file in the external storage device 6 is controlled by the external storage device control unit 7.

The file transmission / reception section 8 includes a central processing unit 10.
The file output from the file conversion device 9 is transmitted to the file server, and the file received from the file server is received via the file conversion device 9.

The file converter 9 stores / stores files.
At the time of extraction, a file conversion process described later is performed as necessary.

The central processing unit 10 is a processor unit composed of a CPU and the like, and operates the above-mentioned units according to a control program to control / manage the entire system and perform various arithmetic processing on predetermined data. .

FIG. 1 is a block diagram showing the functional structure of the file conversion device 9. When storing a file in the file server, the file conversion device 9 constructs file attribute data from the file name and file attribute information of the target file, and adds the file attribute data to the file. Means 11
And a determination means 12 for determining whether or not the file can be converted into a file format that can be handled by this workstation by referring to the file attribute data of the target file when extracting the file from the file server. If the result of the determination in 12 is that the file can be converted, it is composed of the file conversion means 13 that converts it into the file format of its own workstation.

In this embodiment, the file attribute data is constructed from the file name of the target file and the file attribute information, and this is added to the file. However, if the file name is not required, Alternatively, only the file attribute information may be added to the file.

When the user accesses the file server to store / retrieve a file, the user designates a file through a container list display window (a window showing a list of files) as shown in FIG. A file to be stored or taken out can be designated by pointing and selecting a desired file name from the displayed file names, for example, with a mouse.

The container list display window internally holds information as shown in FIG. In FIG. 4, “location of file server” is an item for specifying a file server to be stored and retrieved. As for the “file attribute information”, when the file is stored, the file information specified here is taken into the file attribute data, added to the file and stored. Further, at the time of file extraction, the file attribute information is interpreted as the file format after conversion, that is, the storage destination.
The file attribute information is arbitrarily set according to the usage pattern of the user. The “file conversion information” indicates possible combinations of file conversion, and is used when searching for a conversion step when automatically converting a file. The file conversion information is information that is supported by the file extraction side, and is held by each workstation connected to the network.

FIG. 5 is a schematic configuration diagram of a network system to which a data processing device having a file conversion device is connected. In this example, the file server 15 connected to the network 14 includes a personal computer (PC) 16 and a workstation (W) having different architectures.
S) 17 is shared. When a file that can be handled by the PC 16 is stored in the WS 15, file attribute data indicating the file format of the PC 16 is added to the file and stored in the file server. Further, when the file stored in the file server 15 is taken out as a file that can be handled by the WS 17, it is determined whether the file format of the WS 17 can be converted by referring to the file attribute data. If the file can be converted, the file conversion is performed. Go and take it out.

Next, the flow of processing of the file conversion device when storing a file will be described with reference to the flowchart of FIG.

When a file storage instruction is given, first,
The file name of the file A to be stored and the file attribute information internally held by the window are acquired (steps 101 and 102). Then, file attribute data is constructed from the acquired file name and file attribute information (step 103). Next, the file A to be stored is opened and the file A ′ is stored in the storage destination.
Open (step 104), and save the file A
The previously constructed file attribute data is written in ′ (step 105). Then, the file content is read from the file A (step 106), and if it is not the file end (step 107), the read content is written to the file A'of the storage destination (step 108). Step 1
When the file end occurs at 07, the file A to be stored and the storage destination file A ′ are closed (step 109). As a result, the storage of the file with the file attribute data is completed.

Next, the flow of processing of the file conversion device when a file is retrieved from the file server will be described with reference to the flowchart of FIG.

When there is an instruction to extract a file, first, the file attribute information and file conversion information internally held by the window are acquired (step 201).
Subsequently, the file A ′ to be taken out is opened (step 202), and the file attribute data is read from the file A ′ (step 203). Then, it is determined from the file conversion information whether the file format in the read file attribute data can be converted to the file format in the file attribute information held by the window, that is, the file format of the file A as the storage destination. (Steps 204 and 205).

The confirmation as to whether conversion is possible is not limited to the case of only one step, but is also checked whether conversion is possible in a plurality of steps. For example, the file format of the extraction target is JIS, the file format of the storage destination is EUC, and the file conversion information is JIS → s.
If conversion from shift JIS to shift JIS → EUC is indicated, JIS → shift JIS →
Find the conversion step by EUC.

When it is determined in step 205 that the file conversion is possible, the file A is opened in the storage destination (step 206), the file contents are read from the file A '(step 207), and if it is not the file end (step 208). ), The read contents are converted and written in the storage destination file A (step 209). Step 20
When the file end comes at 8, the file A'to be taken out and the storage destination file A are closed (step 210).

On the other hand, if it is determined in step 205 that the file cannot be converted, a message indicating that the file cannot be converted and a confirmation message asking whether to take out the file without conversion are displayed (step 211), and the user gives an instruction. It is determined whether or not to take out without conversion (step 212).
If the instruction is to extract without conversion, the file A is opened in the storage destination (step 213), and the file contents are read from the file A '(step 21).
4), if it is not the file end (step 215),
The read contents are written in the file A as they are (step 216). When the file end is reached in step 215, the file A ′ to be taken out and the storage destination file A are closed (step 217).

[0028]

As described above, in the file conversion apparatus according to the present invention, when a file is stored in the file server, the file attribute information is added to this file and the file is extracted from the file server. Determines whether the file can be converted to a file format that can be handled by the data processing device on the retrieval side based on the file attribute information of the target file. If conversion is possible, the file format of the data processing device on the retrieval side can be determined. Since it is converted to, it is not necessary to be aware of the file format of the shared computer when storing and retrieving files, and it is not necessary to check the format of the stored files, which greatly reduces the burden on the user. Can be reduced to

[Brief description of drawings]

FIG. 1 is a block diagram showing a functional configuration of a file conversion device.

FIG. 2 is a block diagram showing a basic configuration of a workstation including a file conversion device according to the present invention.

FIG. 3 is a diagram showing an example of a container list display window.

FIG. 4 is a diagram showing file information internally held by a container list display window.

FIG. 5 is a schematic configuration diagram of a network system to which a data processing device having a file conversion device is connected.

FIG. 6 is a flowchart showing the flow of processing when a file is stored.

FIG. 7 is a flowchart showing the flow of processing when a file is taken out.

[Explanation of symbols]

9 ... File conversion device, 10 ... Central processing device, 11 ... File attribute information addition means, 12 ... Judgment means, 13 ... File conversion means

Claims (1)

[Claims] 1. A file attribute information adding means for adding file attribute information to a file when storing the file in the file server, and a file attribute information of the target file when extracting the file from the file server. The determination means determines whether or not the file can be converted into a file format that can be handled by the data processing device on the extraction side; and, if the result of the determination is that conversion is possible, the file is processed by the data processing device on the extraction side. A file conversion device comprising: a file conversion means for converting into a file format.