JPH0619763A - File name/directory name extension system - Google Patents

Abstract

PURPOSE:To use a file name or a directory name more than a length restricted by a file system without changing the file system. CONSTITUTION:Preprocessing parts 11 and 21 convert a virtual path name into a real path name and transfer it to a command 20. At the time of the generating operation of a file and a directory, a necessary real path directory corresponding to the real path name is generated. At the time of writing operation into the file and the directory, it is recognized whether the real path directory, a real file and a real directory, which correspond to the real path name, exist or not. When they do not exist, the necessary real path directory, the real file and the real directory, which correspond to the real path name, are generated. Post-processing parts 12 and 22 convert the real path name outputted from the command 20 into the virtual path name. At the time of the eliminating operation of the file and the directory, the real path directory which corresponds to the real path name and which becomes unnecessary is eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file system for a computer, and more particularly to a file that enables the use of long file names and directory names even in a file system in which the length of file names and directory names is limited to a short length. Name / directory name extension method.

[0002]

2. Description of the Related Art Conventionally, when a file name or directory name longer than the length restricted by a file system is specified, the length after the specified file name and directory name is ignored and the length is restricted. There was a method to shorten the file name and directory name.

[0003]

In the above-mentioned conventional method for shortening the file name and the directory name, the file specified when the file name and the directory name that are longer than the length restricted by the file system are specified. Since the trailing part of the first name and directory name was ignored and shortened to the limited file name and directory name, the similar file name and directory name should be shortened to the same file name and directory name. There is a drawback that there is.

Further, it is difficult to restore the shortened file name and directory name to the original file name and directory name.

In view of the above points, an object of the present invention is to make it possible to use a file name and a directory name which are longer than the length restricted by the file system without changing the conventional file system. It is to provide a file name / directory name extension method.

[0006]

According to the file name / directory name expansion method of the present invention, a directory has a hierarchical tree structure, and the position of a file in the tree structure is designated by a path name expressing the hierarchical structure of the directory. In the file system to be used, the virtual file name and directory name whose length exceeds the limit of the file system is divided from the beginning, the divided last character string is the actual file name and directory name, and the remaining character strings are As a temporary directory name, a means for converting the actual file name and directory name obtained by division and the temporary directory name into a path name that expresses a hierarchical structure in which the hierarchy of the directory becomes deeper, and a virtual name. Virtual information that indicates a temporary directory name in the path name obtained by dividing the file name and directory name A method of including a temporary directory name in a path name obtained by dividing a file name and a directory name, and a temporary directory name in a path name obtained by dividing a virtual file name and directory name. Information that indicates that the virtual file name and directory name are divided into a virtual directory name in the path name and the actual file name and directory name under the virtual directory name are concatenated. A means for restoring the file name and directory name, and a temporary directory in the path name corresponding to the path name obtained by dividing the virtual file name and directory name when referring to the virtual file name and directory name. And the means for creating and deleting the actual files and directories under the directory.

[0007]

In the file name / directory name expansion method of the present invention, a virtual file name (hereinafter referred to as virtual file name) and a directory name (hereinafter referred to as virtual directory name) whose length exceeds the limit of the file system are used. Divide and replace with the path name that represents the hierarchical structure of the directory (hereinafter referred to as the actual file path name and the actual directory path name). Therefore, "virtual directory name / ...
A path name consisting of "/ virtual directory name / virtual file name" (hereinafter referred to as virtual path name) is obtained by dividing the virtual file name and virtual directory name in the virtual path name into "real directory path name /.../ real". Replace with a path name consisting of "directory path name / real file path name" (hereinafter referred to as real path name). From virtual file name and virtual directory name in the specified virtual path name to real file path name and real directory path name Is replaced by dividing the virtual file name and virtual directory name from the beginning to a length within the file system limit, and dividing the last character string into the actual file name (hereinafter referred to as the actual file name) and directory name ( (Hereinafter referred to as the real directory name) and the remaining character strings are the real file path name and real directory By using the internal directory name (hereinafter referred to as the actual path directory name), from the "real path directory name /.../ real path directory name / real file name and actual directory name" in the order of the character strings obtained by division. According to the present invention, the same effect can be obtained with both the virtual file name and the virtual directory name, so that, unless otherwise specified, “virtual directory name / ... / Virtual directory name / Virtual file name ”is described. Characters that indicate the real path directory name at the end of the real path directory name so that the real path name can be restored to the virtual path name. (Hereinafter referred to as the real path directory name identification character) Add the actual file (below When referring to a real file) and a directory (hereinafter referred to as a real directory), a virtual path name is converted into a real path name as preprocessing, and a real path name is converted into a virtual path name as postprocessing. In addition, in the operation of creating a directory and a directory, a necessary real path directory corresponding to the real path name is created as a pre-process. , Delete the unnecessary real path directory corresponding to the real path name.When writing to a file or directory, the real path directory and real file corresponding to the real path name are also preprocessed. And the real directory, and if they do not exist, the required real path directory corresponding to the real path name. Create a directory and real files and directories.

[0008]

The present invention will be described in detail with reference to the drawings.

FIG. 1A shows a front-end program 10 incorporating a pre-processing section 11 and a post-processing section 12 for performing pre-processing and post-processing for a specified virtual path name before and after execution of an existing command 20. Figure 1 when used
(B) is a figure which respectively shows one Example of this invention by incorporating the pre-processing part 21 and the post-processing part 22 which perform the pre-processing and post-processing with respect to the virtual path name designated by the command 20 itself.

Here, a case of implementing the present invention without changing the existing command 20 will be described with reference to FIG.

The preprocessing section 11 converts the virtual path name into a real path name and delivers it to the command 20. In the operation of creating files and directories, a necessary real path directory corresponding to the real path name is also created. Also, when writing to a file or directory, check whether the actual path directory corresponding to the actual path name and the actual file or directory also exist,
If it does not exist, the necessary real path directory, real file, and real directory corresponding to the real path name are created.

The post-processing unit 12 converts the real path name output from the command 20 into a virtual path name. When deleting files and directories, the unnecessary real path directory corresponding to the real path name is also deleted.

In the following description, a file system in which the maximum length of the file name and the directory name is 4 characters, and "/" is used as the delimiter of the directory name and "#" is used as the real path directory name identification character. As described below.

FIG. 2 is a diagram showing an outline of the present invention in which a hierarchical tree structure of directories based on a virtual path name and a corresponding real path name is compared. Each virtual path name is divided and converted into a real path name. Virtual directory name "abcd
ef "is converted into a real directory path name" abc # / def "consisting of a real path directory name" abc # "and a real directory name" def ".Virtual file name" g "
hijkklmn ”is the two real path directory names“ g
Real file path name "ghi # / jkl # / m" consisting of hi # "and" jkl # "and real file name" mn "
n ".

Similarly, the virtual file name "abcdefg
hijkklmn ”is the actual file path name“ abc # / d
ef # / ghi # / jkl # / mn ”. Therefore, the virtual path name“ abcdef / ghijkklmn ”that is a combination of the virtual directory name and the virtual file name.
Is a real path name "abc # / def / ghi # / jk" that is a combination of a real directory path name and a real file path name.
l # / mn ″.

In addition, "# /", which is a real path directory name identification character in the real path name and a directory name delimiter
You can see that you can restore to the virtual path name by deleting and.

FIG. 3 shows a command 2 for displaying a file name.
It is a figure which shows an example of execution of 0. The front-end program 10 receives the input command character string and assigns the virtual path name “a *” to the real path name “abc #” in the preprocessing unit 11.
/ Def ”and“ abc # / def # / ghi # / jkl
# / Mn ". Front-end program 1
After preprocessing with 0, command 20 is executed with the actual pathname. When executing the command 20, the front-end program 10 receives the output message from the command 20, and outputs the real path name “abc #” in the output message.
/ Def / "and" abc # / def # / ghi # / jk
l # / mn ”and the virtual path name“ abcd ”in the post-processing unit 12.
ef / "and" abcdefghijkklmn "are converted and output.

In particular, FIG. 3 is a diagram showing an example in which a wild card is used to specify a virtual path name. In the figure, "a
Interpret "*" as the display of all virtual path names starting with "a", and the wildcard expansion is performed by the preprocessing unit 11 of the front-end program 10. The expansion of the wildcard is performed by the matching real path. This can be achieved by recursively expanding all the names, so in the case of Fig. 3,
"Abc # / d" which is all real path names starting with "a"
ef ”and“ abc # / def # / ghi # / jkl # /
mn "and expand.

FIG. 4 is a diagram showing an example of execution of the command 20 for copying a file. The front end program 10 receives the input command character string,
The virtual path names "abcdef / ghijkklmn" and "a
bcdef / ghiJKLMN ”and the real path name“ abc # / def / ghi # / jkl # / m ”in the preprocessing unit 11.
n ”and“ abc # / def / ghi # / JKL # / M
N ".

For the virtual file to be written (virtual file name "ghiJKLMN"), two real files that compose a real file path corresponding to the real file path name "ghi # / JKL # / MN" are further preprocessed. It is confirmed whether the path directories “ghi #” and “JKL #” and the real file “MN” exist, and the real path directory “JKL #” and the real file “M” that do not exist are confirmed.
N "and.

After the pre-processing by the front end program 10, the specified command is executed together with the actual path name. When executing the command 20, the front-end program 10 receives the output message from the command 20, and the real path name “abc # / de” in the output message is received.
f / ghi # / jkl # / mn ”and“ abc # / def ”
/ Ghi # / JKL # / MN "in the post-processing unit 12 and virtual path names" abcdef / ghijkklmn "and" abc ".
def / ghiJKLMN "and output.

FIG. 5 is a diagram showing an example of execution of a command for deleting a file. The front-end program 10 receives the input command character string and assigns the virtual path name “abcdef / ghiJKLMN” to the preprocessing unit 1.
1 is the real path name “abc # / def / ghi # / JKL #
/ MN ”. After the pre-processing by the front-end program 10, the specified command 20 is executed with the actual path name. When executing the command 20, the front-end program 10 receives the output message from the command 20, The real path name "ab" in the output message
c # / def / ghi # / JKL # / MN "is used as the virtual path name" abcdef / ghiJKLMN "by the post-processing unit 12.
And output. For the virtual file (virtual file name “ghiJKLMN”) to be deleted, the actual path directory “JKL” that is no longer necessary due to the deletion of the actual file (real file name “MN”) as post-processing.
# ”Is deleted.

[0023]

As described above, according to the present invention, when an existing command is used, it is embedded in the front-end program, and by embedding it in the command itself without using the front-end program, the conventional file File and directory names longer than the file system limit can be used as is without changing the system, and similar file and directory names can be clearly distinguished and used. , There is an effect that the original file name and directory name can be reliably restored.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a file name / directory name extension method according to an exemplary embodiment of the present invention.

FIG. 2 is a diagram showing a schematic diagram of a file name / directory name expansion method of the present embodiment.

FIG. 3 is a diagram showing an example of execution of a command for displaying a file name in the file name / directory name expansion method of the present embodiment.

FIG. 4 is a diagram showing an example of execution of a command for copying a file in the file name / directory name expansion method of the present embodiment.

FIG. 5 is a diagram showing an example of execution of a command for deleting a file in the file name / directory name extension method of the present embodiment.

[Explanation of symbols]

 10 front-end program 11 pre-processing unit 12 post-processing unit 20 command 21 pre-processing unit 22 post-processing unit

Claims (1)

[Claims] 1. A directory has a hierarchical tree structure,
In the file system that specifies the position of the file in the tree structure by the path name that expresses the hierarchical structure of the directory, the virtual file name and directory name whose length exceeds the limit of the file system are divided from the beginning and divided. The final character string is the actual file name and directory name, the remaining character string is the temporary directory name, and the actual file name and directory name obtained by division and the temporary directory name are divided in the directory hierarchy. The method of converting into a path name that expresses a hierarchical structure in which the virtual file name and the directory name are virtual file names And a means to include the temporary directory name in the path name obtained by dividing the directory name, and a virtual file And the temporary directory name in the path name obtained by dividing the virtual file name and directory name by using the information indicating the temporary directory name in the path name obtained by dividing the directory name. The method of concatenating the actual file name and directory name under the directory name of to restore the virtual file name and directory name, and the virtual file name and directory name when referring to the virtual file name and directory name. A file name characterized by having means for creating and deleting a temporary directory in the path name corresponding to the path name obtained by division and actual files and directories under the temporary directory as necessary. Directory name expansion method.