JPH0588958A - File erasing device - Google Patents

Abstract

PURPOSE:To collectively erase many files existing in arbitrary positions and a directory in a storage device having a hierarchical structure. CONSTITUTION:A user starts a file collective erase device 2 to request generation of a marking file. The file collective erase device 2 starts a marking file generating means 9 by a parameter analysis start means 3. The marking file generating means 9 analyzes the hierarchical structure of a designated storage device 11 and generates a marking file 12 for erase. The user 1 uses a general editor to mark files to be erased in the marking file 12 for erase. The file collective erase device 2 starts a file erasing means 10 by the parameter analysis start means 3. The file erasing means 10 erases files in accordance with the marking file 12 for erase.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file erasing device for a storage device having a hierarchical structure.

[0002]

2. Description of the Related Art When the free space of a storage device having a hierarchical structure is reduced, it becomes necessary to delete unnecessary files to increase the free space. Normally, when the free space becomes small in this way, all files in the storage device select erasable files from the files, and delete the selected files all at once.

In the conventional file erasing of this kind, a file to be erased is designated and erased one by one, a directory file is designated and all files under the directory file are erased, or a storage device is designated. , There is a method of erasing all the files in the storage device. Then, when deleting a large number of files existing at arbitrary positions, a large number of files are deleted by using a method of specifying and deleting files one by one and a method of specifying and deleting in units of directory files. ..

[0004]

In the above-mentioned conventional file erasing method, it takes time to erase all erasable files, and sometimes files that should not be erased accidentally are erased. , There is a problem.

[0005]

A file erasing device of the present invention expresses file information in a hierarchical structure in a file erasing structure for erasing a file in a storage device having a hierarchical structure, and corresponds to each file information. A marking file for erasing that has a marking area for erasing, a parameter analysis starting means for analyzing the functions and parameters specified by the user at startup, activating the specified means and passing the parameters, and a marking file for erasing A file structure analysis means that is started by the parameter analysis start means at the time of creation and analyzes the hierarchical structure of the file in the designated storage device, and the file information analyzed by the file structure analysis means is received, and the necessary information is extracted and deleted. The file information editing means for editing in the marking file format and the file information editing means Marking file creation means for receiving the collected file information and creating a marking file for erasing, and reading the marking file for erasing, which is started by the parameter analysis starting means and erases the marked marking file for erasing, when reading the file in the storage device. It is characterized by having an analyzing means and a file erasing means for erasing the file notified by the marking file reading and analyzing means.

[0006]

Embodiments of the present invention will now be described with reference to the drawings. (Structure) FIG. 1 is a block diagram showing a structure of a file erasing device of the present invention, and FIG. 2 is a block diagram showing an embodiment when batch erasing files using this file erasing device and a general-purpose editor 15. 3 is a diagram showing a file information structure of the erasing marking file 12 shown in FIG. FIG. 4 is a diagram showing a method of marking an erase file using the erase marking file 12 shown in FIG.

This embodiment comprises a user 1, a file erasing device 2 and a storage device 11. File erasing device 2
Includes a parameter analysis starting means 3, a marking file creating means 9, and a file erasing means 10. Further, the marking file creating means 9 is composed of a file structure analysis output means 4, a file information editing output means 5 and a marking file creation means 6, and a file erasing means 10 includes a marking file reading means 7 and a file erasing means 8. Composed of.

The storage device 11 also stores an erasing marking file 12. (Function) The erasing marking file 12 comprises a marking area 13 and file information 14 as shown in FIG.
The marking area 13 is an area where the user 1 uses the general-purpose editor 15 as shown in FIG. 2 to mark a file to be deleted. The file information 14 is composed of a file name, a file attribute, a file size, etc. of a certain file, and, in order to indicate where in the hierarchical structure the file exists, the file information of the directory file to which the file depends Is displayed at the shifted position.

The parameter meter starting means 3 receives a marking file creation request and a file deletion request from the user 1. When a marking file creation request is received, the parameters specified in addition to this request type (target storage device name, marking file creation location for deletion, specification of file information to be displayed, etc.) are analyzed to analyze the file structure. The means 4 is activated and the specified parameters are notified. Even when a file deletion request is received, parameters specified in addition to this request type (specification of the marking file 12 for deletion to be used) are analyzed, the marking file reading analysis means 7 is activated, and the specified parameters are notified. To do.

The file structure analysis means 4 analyzes the file structure (hierarchical structure) of the storage device designated as a parameter, and combines the analyzed information (what hierarchical level) and individual file information, sequentially, File information editing means 5
To notify.

The file information editing means 5 extracts information from the notified file information according to the parameter of the file information to be displayed designated by the user 1 (notified by the parameter analysis starting means 3). Edit to the marking file format for erasure. That is, as shown in FIG. 13, the marking area 13 is provided and the file information is edited so that the hierarchical position can be understood. Then, the edited information is notified to the marking file creating means 6.

The marking file creating means 6 creates an erasing marking file at a location designated by the user 1 (notified by the parameter analysis starting means 3) and sequentially writes the notified file information.

Marking file reading analysis means 7
Is the marking file 12 for deletion specified by the user 1.
(This file has already been marked as an erased file by a general-purpose editor), analyzes the file position of the file marked for erasure, and notifies the file erasing means 8.
The file erasing means 8 erases the notified file. (Operation) First, the user 1 requests the file erasing device 2 to create a marking file. At this time, the user 1 designates the target storage device 11 and other parameters for designating the location of the erasing marking file and the file information displayed in the marking file.
In this case, it is assumed that a file attribute, a file size, a file generation date, and a parameter for displaying the last update date are specified as the file information.

The file erasing device 2 recognizes that the parameter analysis starting means 3 has received the marking file creation request. The parameter analysis starting means 3 starts the marking file creating means 9.

Specifically, the parameter analysis starting means 3 is
The file structure analyzing means 4 in the marking file creating means 9 is notified of the target storage device name, the parameter related to the file information to be output to the file information editing means 5, and the marking file creating means 6 for erasing. Notify where the marking file is created.

Marking file creating means 9 started
Analyzes the hierarchical structure of the file in the designated storage device 11 and creates the erasing marking file 12. Specifically, first, the file structure analysis unit 4 operates to analyze the hierarchical structure of the file of the designated storage device 11,
Get file information for each file. Information regarding this hierarchical structure (position within the hierarchical structure) and file information are successively notified to the file information editing means 5 as a set of information. Then, the information edited in this display format is sequentially notified to the marking file creating means 6.

The marking file creating means 6 creates the erasing marking file 12 at the location designated by the user 1 and sequentially writes the information notified by the file information editing means 5.

When the erasing marking file 12 is created, the user 1 uses the general-purpose editor 15 provided by the computer system in use to mark the erasing marking file 12 marking area as shown in FIG. 1
In 3, the file to be erased is marked. At this time, if a directory file having a plurality of subordinate files is marked, all subordinate files including the directory file will be deleted. If you mark a file that is not a directory file, only that file will be deleted.

Then, the marked erasing marking file 12 is used to erase the file. The user 1 makes a file deletion request to the file deletion device 2. At this time, the position of the erasing marking file 12 is designated as a parameter.

The file erasing device 2 recognizes that the parameter analysis starting means 3 has received the file erasing request. The parameter analysis starting means 3 has a file erasing function 1
Start 0. Specifically, the parameter analysis starting means 3
Notifies the marking file reading / analyzing means 7 in the file erasing means 10 of the file position of the erasing marking file 12 to be used.

The marking file reading means 7 reads the notified erasing marking file 12 one record at a time (one record consists of a marking area of one file and file information). When the marked record is read, the file erasing means 8 is sequentially notified of the file name (file position) of the file stored in the record. If the marked file is a directory file, the file erasing means 8 is also notified that the directory file is to be erased.

The file erasing means 8 sequentially erases the notified file. When a directory file deletion notification is given, first, all files under the directory file are deleted in directory file units. Next, the notified directory file is deleted.

[0023]

As described above, according to the present invention,
It is possible to easily delete all the files existing in many arbitrary positions in the storage device having the hierarchical structure all at once. Also, it is possible to greatly prevent the necessary files from being deleted due to false investigation. This is effective when erasing unnecessary files all at once and increasing the free space when the free space of the storage device becomes small.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a file erasing apparatus of the present invention.

FIG. 2 is a block diagram showing an example of erasing a file using the file erasing device of the present invention and a general-purpose editor.

FIG. 3 is a diagram showing a file information structure of an erasing marking file shown in FIG.

FIG. 4 is a diagram showing a method of marking an erase file using the erase marking file shown in FIG.

[Explanation of symbols]

 1 User 2 File Erasing Device 3 Parameter Analysis Starting Means 4 File Structure Analyzing Means 5 File Information Editing Means 6 Marking File Creating Means 7 Marking File Reading Analyzing Means 8 File Erasing Means 9 Marking File Creating Means 10 File Erasing Means 11 Storage Devices 12 Marking file for erasing 13 Marking area 14 File information 15 General-purpose editor

Claims (1)

[Claims] 1. In a file erasing structure for erasing a file in a storage device having a hierarchical structure, file information is expressed in a hierarchical structure, and an erasing marking file having an erasing marking area corresponding to each file information. And analyze the functions and parameters specified by the user at startup,
Parameter analysis starting means for starting the specified means and passing parameters, and file structure analysis means for starting the specified means for analyzing the hierarchical structure of the file of the specified storage device when the marking file for erasing is created The file information analyzing means receives the file information analyzed by the file structure analyzing means, extracts necessary information, and edits the file information to the marking file format for erasing, and the file information editing means receives the file information edited, and the marking file for erasing A marking file creating means for creating a file, a marking file reading analysis means for reading and analyzing a marking file for erasure marked and started by the parameter analysis starting means when the file in the storage device is erased, and a marking file reading analysis means File erasing apparatus characterized by having a file erase means for erasing the notified file Ri.