JPH04338844A - Control system for path name of file - Google Patents

Abstract

PURPOSE:To control the path names corresponding to the files in accordance with an ID of a small prescribed number of bytes. CONSTITUTION:A data processor which has an access to a desired file with use of a path name is provided with a path name file 7 which stores the IDs in accordance with the corresponding path names. Furthermore a path name control part 4 is added to store the IDs in place of the path names in a memory 3.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention provides a mechanism for managing IDs associated with path names in a data processing device that manages and controls files using path names, and manages files using IDs associated with path names. This article relates to a file path name management control method.

0002

2. Description of the Related Art Conventionally, in managing files accessed by a program, path names each having a size of, for example, about 65 bytes are associated with each other, and management and control are performed using the path names.

0003

[Problems to be Solved by the Invention] In the conventional case, path names were directly stored in memory and data files, so (1) a path name storage area of a size corresponding to the path name; This is a factor that puts pressure on memory and data file storage space. (2) Since path names are stored in memory and data files, (i) if you want to change part of a path name, read all of the memory and data files and enter the path name to be changed. (ii) If you replace the entire pathname with another pathname, the old and new pathname lengths must be updated in order to reserve space for the new pathname length in memory or in the data file. It is necessary to compare and check whether they fit correctly.

The purpose of the present invention is to solve the above-mentioned problems, and to manage the path name associated with a file by associating it with an ID having a predetermined byte length, which is a smaller number of bytes. The purpose is

[0005]

[Means for Solving the Problems] FIG. 1 shows a diagram of the basic configuration of the present invention. Reference numeral 1 in the figure is a display, and 2 is an input/editing section which manages access to memory and the like. 3 is a memory, and in the case of the present invention, data files are stored so that they can be managed using IDs instead of conventional path names.

Reference numeral 4 denotes a path name management section, which includes at least an ID-path management section 5 and a path name file management section 6. The ID-path management unit 5 manages path names and IDs associated with them, and when registering a path name, allocates a new ID associated with the registered path name and sends it to the path name file management unit 6. (2) When inquiring about a pass name, use the given ID to request the pass name file management section 6 to make an inquiry.

[0007] The path name file management unit 6: ■ In response to a path name registration request, registers a new ID and a path name in a path name file 7 to be described later, and ■ In response to a path name inquiry request. , path name file 7 with the given ID
is indexed and the read path name is transferred to the ID-path management section 5.

[0008] 7 is a path name file with ID(i)
and path name (i) are stored.

[0009]

[Operation] When accessing the memory 3, the ID is used in accordance with the data file. When a path name is registered, the ID-path management unit 5 associates a new ID with the path name and requests the path name file management unit 6 to register the path name and ID. conduct. When there is a path name inquiry request from the input/editing section 2 to inquire about a path name using a certain ID,
The ID-path management unit 5 transfers the ID to the path name file management unit 6.

The path name file management section 6 registers an ID and a path name in response to a registration request, and reads a path name in response to a path name inquiry.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 shows a processing function flowchart. (S1): In response to path name registration, a new ID is assigned to the registered path name. (S2): The path name file management unit 6 receives the path name and ID and performs a process of registering both. (S3): Write the ID and path name to the path name file 7.

[0012] The path name registration is performed as described above, but when there is a path name inquiry from the input/editing section 2,
Processing is performed as follows. (S4): The input/editing unit 2 makes a request using a certain ID (i). (S5): The ID-path management unit 5 receives the given ID (i
) is transferred to the path name file management section 6. (S6): The path name file management unit 6 uses the given ID
(i) is used to index the path name file 7. (S7): Reading is performed in the path name file 7. (S8): The path name file management unit 6 reads the read path name (i). (S9): The ID-path management unit 5 transfers the path name (i) received from the path name file management unit 6 to the input/editing unit 2. (S10): The input/editing unit 2 uses the ID that made the request earlier.
Knowing that the path name corresponding to (i) is path name (i), the path name (i) is stored in the memory 3, for example. That is, in the conventional case, a path name, for example /DIRECTORY1/DIRE, is associated with a data file.
CTORY2/DIRECTORY3/DIRECTO
Instead of storing a 65-byte path name such as RY4/FILENAEM1, for example, a 2-byte I
D is stored in association with the data file.

[0013] If the path name is to be changed as necessary, the correspondence between the ID and the path name may be changed in the path name file 7. That is, there is no need to change the ID itself, and only the path name needs to be changed. Of course, there is no need to rewrite the contents of memory or data files.

[0014]

[Effects of the Invention] As explained above, according to the present invention, it is sufficient to prepare an area on the memory or data file to store an ID of about 2 bytes, so it is possible to have a margin in terms of memory capacity. can. In addition, when changing a path name, it is sufficient to simply change the contents of the path name file.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the principle configuration of the present invention.

FIG. 2 shows a processing function flowchart.

[Explanation of symbols]

1 Display 2 Input/editing department 3 Memory 4 Path name management department 5 ID-Path Management Department 6 Path name file management section 7 Path name file

Claims (3)

[Claims] Claim 1: A path name is assigned to a file that a program accesses, and an ID associated with the path name is used in a data processing device that uses the path name to access a desired file. A path name file (7) is created that is stored in association with the relevant path name, and an ID-path management unit (5) that manages each of the multiple path names and the ID corresponding to each path name, and the above path name file. It has a path name file management unit (6) that manages the process of accessing (7), and in the memory (3), it associates with each file and ID corresponding to the file.
1. A file path name management control method characterized in that a file is stored and an input/editing section (2) accesses the file using each ID. Claim 2: In changing the path names associated with the individual files, the ID-path management unit (
Claim 5) is characterized in that the changed path name is rewritten on the path name file (7).
Path name management control method for the files described. 3. When acquiring the path name of the desired file, the input/editing unit (2) requests the ID-path management unit (5) to acquire the path name using the ID. 2. The file path name management control method according to claim 1.