JPH0764839A - Information processor with file management function - Google Patents

Abstract

PURPOSE:To enable one software to easily use the file generated by another software. CONSTITUTION:At the time of record insertion to a file 10, a record inserting operation part 25 in a file management mechanism 2 is started by an application program execution part 32 to perform the inserting operation of a new record 11 having contents of a buffer 33 to be the object as a data part 112 and having the set value of a present attribute storage part 29 as an attribute part 111. When only records having an attribute required in an application program 31 will be operated, a present attribute setting operation part 23 is started to set this attribute to the present attribute storage part 29 as the present attribute, and thereafter, a record read operation part 26 is started to read the records 11, which have attributes coinciding with this set present attribute, as the operation object into the buffer 33 from the file 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to reading / writing of files recorded in an auxiliary storage device and records contained therein.
The present invention relates to an information processing device having a file management function suitable for writing.

[0002]

2. Description of the Related Art Generally, not all information handled by an information processing device is homogeneous. For example, in the case of a document file, ruled lines are included in addition to sentences, and highlighting is specified for some words. It consists of information with different attributes such as auxiliary information.

As a means for recording such non-uniform information in a file, conventionally, according to a program (business program) for operating the information, each attribute is stored in a different file, or A method was used in which each file was recorded in its own format, such as being stored as homogeneous information in a single file, and then interpreted and operated with its own meaning.

[0004]

However, if information that is originally inhomogeneous is expressed in a program-specific format as described above, each program (business program) has
There was a problem that the information format and management method in the file had to be designed and manufactured each time. There is also a more serious problem that it is difficult to use a file created according to a certain program from other programs.

The present invention has been made in consideration of the above circumstances, and its purpose is to store information in a file having various attributes,
An information processing apparatus having a file management function that can be operated by a uniform procedure common to programs to be used and that can easily use a file created by using certain software from other software. To provide.

[0006]

SUMMARY OF THE INVENTION The present invention is a record attribute adding means for adding the attribute of a record used to control the operation of the record to each record stored in a file, and the operation at the present time. The current attribute storage means for storing the attribute of the target record as the current attribute, the current attribute setting operation means for setting an arbitrary current attribute in the current attribute storage means, and the current attribute storage means are set. Based on the current attribute and the record attribute attached to the record in the file, it is determined whether or not the record is to be operated, and a record operating means for operating the record according to the determination result is provided. ,
The present invention is characterized in that the range of the record to be operated in the file is changed by changing the current attribute set in the current attribute storage means. The present invention is also characterized in that record attribute update operation means for updating the record attributes attached to the records in the file is further provided.

[0007]

In the above structure, when the record is stored in the file, the record attribute adding means first refers to the current attribute storage means, and the current attribute set in the storage means is stored in the record as the record attribute. It is added and stored in the file. Next, when operating the record in the file, the current attribute set in the current attribute storage means and the record attribute attached to the target record are compared by the record operating means, and the matching attribute is determined. If so, the record is selected as the operation target. When it is desired to change the record attribute of the selected record, the record attribute update operation means is activated and the record attribute attached to the record in the file is updated to the designated attribute.

As described above, according to the above configuration, the record attribute of the record is added to each record stored in the file, and this record attribute and the current attribute set in the current attribute storage means are added. Since it is determined whether or not the record is to be operated, it is necessary to operate information with various attributes in a uniform procedure common to the software (business program) to be used. Is possible.

Further, since the range of the record to be operated in the file is determined according to the current attribute set in the current attribute storage means, by changing the current attribute set in the current attribute storage means Unnecessary records can be hidden from software that operates only records having a specific attribute or software that does not operate records having a specific attribute. Therefore, a file created by using certain software can be easily used by other software.

[0010]

1 is a block diagram showing a schematic configuration of an information processing apparatus having a file management function according to an embodiment of the present invention. In the figure, 1 is an auxiliary storage device, 10 is a file stored in the auxiliary storage device 1, 11, 11, ...
Is a record (as a unit of information) that constitutes the file 10. Each record 11 is composed of an attribute section (record attribute section) 111 and a data section (record data section) 112 that represent the attributes of the record 11. Where record 1
It is assumed that the attribute of 1 can be decomposed into mutually independent information groups that represent the type and state of the same record 11. This decomposed individual information is called an attribute element. Record attribute section 111
Is the set of this attribute element.

Reference numeral 2 is a file management mechanism for managing the read / write of the file 10 in the auxiliary storage device 1 and the record 11 in the file 10. File management mechanism 2
Is 8 prepared for each type of operation on the file 10.
One file operation unit, that is, the open operation unit 21, the close operation unit 22, the current attribute setting operation unit 23, the record attribute update operation unit 24, the record insertion operation unit 25, the record read operation unit 26, the record update operation unit 27, and the record deletion. It has an operation unit 28 and a current attribute storage unit 29 for storing the attribute of the record currently operated (hereinafter referred to as the current attribute).

Next, some terms used in this embodiment will be defined in order to explain the function of each of the operation units 21 to 28. (1) Standard record A record that is implicitly a target of operation when access to a file is called a standard record.

(2) Standard Attribute The attribute element representing a standard record is called a standard attribute. (3) Current record The last (most recently) read / write or changed record is called the current record.

(4) Access Position The start position of the record next to the last (most recently) read or written record is called the access position. At the start of access to a file, the access position is located at the beginning of the file.

On the premise of the above definitions, the above-mentioned operation units 2
The functions of 1 to 28 will be described below. Open operation part 21
Is the open command open (path, mode)
The information group necessary for operating the target file is initialized and the data operation is started. In this initialization, standard attributes are set in the current attribute storage unit 29. The first parameter "path" of the command open (path, mode) is used to specify the identification number (directory) when operating a plurality of files, and the second parameter "mode" is also used for the purpose of file operation (one (Not limited) used to specify.

The close operation section 22 is activated in response to a close command close (fileno), and "fi
The operation of the file 10 designated by "leno" is terminated. The current attribute setting operation unit 23 uses the attribute setting command at
It is started according to tr set (fileno, newattr), and the attribute of the current attribute storage unit 29 for the target file 10 designated by "fileno" is set to "new".
Set to the attribute specified by "attr".

The record attribute update operation unit 24 uses an attribute update command attr modify (fileno, ne).
The current record 11 in the target file 10 designated by "fileno" is updated to the value designated by "newattr".

The record insertion operation section 25 is activated in response to a record insertion command put (fileno, buf), and basically, the contents of a buffer 33, which will be described later, designated by "buf" is set as "new record 11". fil
It is inserted before the access position in the target file 10 designated by "eno". The record insertion operation unit 25 uses the value currently set in the attribute storage unit 29 as the attribute of this new record 11. If the current attribute is equal to the standard attribute, it is searched backward from the access position and inserted before the first standard record.

The record read operation unit 26 is activated in response to a record read command get (fileno, buf), and the file 10 specified by "fileno" is specified.
From the next record 11 having the attribute equal to the current attribute or the standard attribute to the buffer 3 designated by "buf"
Read on 3.

The record update operation unit 27 is activated in response to a record update command modify (fileno, buf), and stores the current record 11 in the target file 10 designated by "fileno" in the buffer 33 which designates "buf". Replace with content. At this time, the record attribute is not changed.

The record deletion operation unit 28 is activated in response to the record deletion command delete (fileno) and deletes the current record 11 in the target file 10 designated by "fileno" from the file 10.

Reference numeral 31 is a business program, 32 is each operation unit 21 in the file management mechanism 2 according to the business program 31.
A business program execution unit for performing file operations by using .about.28 and a buffer 33 used by the business program execution unit 3 for storing a data portion of a record. The business program 31 is not limited to one.

Next, the basic operation of the configuration of FIG. 1 will be described with reference to FIG. 2 as an example in which there can be three standard attribute, ruled line record attribute, and deleted record attribute as record attribute elements.
Will be described with reference to. 2 shows the business program 3
3 is a flowchart showing a processing procedure of a part related to file operation realized by 1.

First, the business program execution unit 32 follows the business program 31 to open command open (pa
th, mode) is executed (step S1). In this case, the business program execution unit 32 activates the open operation unit 21 in the file management mechanism 2.

Then, the open operation section 21 initializes the information group (current record, access position, etc.) necessary for operating the target file 10. At this time, standard attributes are initially set in the current attribute storage unit 29. In the present embodiment, the current attribute storage unit 29 is composed of 3 bits, that is, bit 0 for setting a standard attribute, bit 1 for setting a ruled line record attribute, and bit 2 for setting a deleted record attribute. Therefore, the standard attribute is set by writing "1" in bit 0 here.

When it is desired to change the current attribute (standard attribute in this case) or to add a new attribute element as the current attribute, the attribute setting command attr set (fileno, new) according to the business program 31.
attr) is executed (step S2). in this case,
The business program execution unit 32 activates the current attribute setting operation unit 23 in the file management mechanism 2.

Then, the current attribute setting operation section 23 sets the attribute of the current attribute storage section 29 to the attribute setting command attr s.
"newa" in et (fileno, newattr)
Set to the attribute specified by "ttr".

Next, the business program execution unit 32, according to the business program 31, puts a record insertion command put.
Execution of (fileno, buf) (step S3), record read command get (fileno, buf)
(Step S4) or the record delete command delete (fileno) (step S5)
I do.

Here, a new record (data section)
Is generated in the buffer 33, and as a result, the record insertion command put (fileno, buf) is executed. This record insertion command put (filen
o, buf) is usually an attribute setting command attr
It is executed subsequent to set (fileno, newattr). In this case, the business program execution unit 32 activates the record insertion operation unit 25 in the file management mechanism 2.

Then, the record insertion operation section 25 sets the new record 11 in which the contents of the buffer 33 are the record data section 112 and the value (current attribute) currently set in the attribute storage section 29 is the record attribute section 111. file
It is inserted before the access position in the file 10 designated by "no" (at the beginning of the file). However, when the current attribute is equal to the standard attribute (that is, bit 0 indicating the standard attribute of the current attribute storage unit 29 is " 1 "), the record insertion operation unit 25 inserts the file 10 before the first standard record located behind the access position in the file 10. This is because the standard record is most often used by the business program 31. This is because it is a record to be stored, and by making these into one block, the efficiency of record access is improved.

As described above, a new record is inserted in the file 10 with the current attribute initialized in step S1 or the current attribute updated in step S2.

Next, the case of editing the record 11 in the file 10 will be described. First, the business program execution unit 32 executes the record read command get (fileno, buf) according to the business program 31 (step S4). In this case, the business program execution unit 3
2 starts the record read operation unit 26 in the file 10.

Then, the record read operation unit 26 selects the next attribute from the file 10 designated by "fileno" in the record read command get (fileno, buf), which is equal to the current attribute indicated by the current attribute storage unit 29.
Alternatively, the record 11 having the standard attribute is read. This record 11 is a record read command get (file).
buffer 3 designated by "buf" in "no, buf)"
3 is stored.

At this time, the record read operation unit 26 sets the attribute of the read record 11 as a function value, for example.
Notify the business program execution unit 32. If the record 11 having the attribute no longer exists after the access position, the record read operation unit 26 notifies the business program execution unit 32 of the end of the data (substantially the end of the file 10).

In this way, the business program execution unit 3
2 can read only the record 11 having the attribute equal to the current attribute or the standard attribute from the file 10. Therefore, the attribute setting command a in step S2
By executing ttr set (fileno, newattr), only the attributes supported by the business program 31 are currently set in the attribute storage unit 29, and the record read command get (fil
By executing (eno, buf), it is possible to hide a record having an attribute not supported in the business program 31 from the business program 31 (the business program execution unit 32 that executes the business program 31). Similarly, when a record having a specific attribute is set as an operation target, a record read command get (fileno, buf) is executed while the attribute is currently set in the attribute storage unit 29. A business program execution unit 3 that executes a business program 31
It can also be hidden from 2).

In this embodiment, the reason why the record read operation unit 26 reads the record 11 having the standard attribute regardless of the current attribute is that the standard record is processed by many business programs 31. Only the record 11 having the attribute equal to the attribute may be read.

The business program execution unit 32 executes step S
When the record 11 read in the buffer 33 in 4 is to be treated as a deleted record, for example, the attribute update command attr modify (fileno, newatt)
r) is executed (step S6). In this case, the business program execution unit 32 activates the record attribute update operation unit 24 in the file management mechanism 2.

Then, the record attribute update operation unit 24 uses the attribute update command attr modify (filen).
o, newattr) attribute of the current record 11 in the file 10 designated by "fileno", that is, record 1 read in step S4 immediately before step S6.
The attribute of 1 is updated to the value specified by "newattr". Therefore, by setting this value to "101", for example, a record having a standard attribute can be updated to a record having a standard attribute and a deleted record attribute.

The record 11 read in the buffer 33 in step S4 is edited, and the edited record 11 is edited.
I want to replace (update) the original record 11
In this case, the business program execution unit 32 executes the record update command modify (fileno, buf) (step S7). In this case, the business program execution unit 32 activates the record update operation unit 27 in the file management mechanism 2.

Then, the record update operation unit 27 causes the record update command modify (fileno, buf).
Of the data part 112 of the current record 11 in the file 10 designated by "fileno", that is, the data part 112 of the record 11 read in step S4 immediately before step S6, is the edited record 11 in the buffer 33. The data part 112 is replaced. At this time, the contents of the record attribute part 111 are not changed.

When it is desired to delete the current record 11, the business program execution unit 32 executes the record deletion command delete (fileno) (step S5). In this case, the business program execution unit 3
2 by the record management unit 2 in the file management mechanism 2
8 is activated.

Then, the record deletion operation unit 28 uses the "f" in the record deletion command delete (fileno).
The current record 11 in the file 10 designated by “ileno” is deleted from the file 10. As a result, the current record becomes indefinite. The access position does not move.

Next, the record 11 to which the deleted record attribute is once attached, that is, the record 1 treated as a deleted record
In order to recover 1 from the deleted state, the business program execution unit 32 uses the attribute update command attr modi
fy (fileno, newattr) is executed to activate the record attribute update operation unit 24.

The record attribute update operation unit 24 uses the attribute update command attr modify (fileno, ne
The attribute of the current record 11 in the file 10 designated by “fileno” in “wattr” is set to “newatt
Therefore, the record having the standard attribute and the deleted record attribute can be updated to the record having only the standard attribute by setting the value to, for example, “100”.

The effect of this embodiment by the file operation according to the above basic operation is shown by the six records 11 shown in FIG.
An example will be explained. Record 11 shown in FIG.
The attribute part 111 of the same as the case described in the basic operation described above, bit 0 for setting the standard attribute, bit 1 for setting the ruled line record attribute, and bit 2 for setting the delete record attribute. It is assumed that it is composed of 3 bits. The example of the record attribute section 111 is for the purpose of simplifying the description, and it is possible to set more attribute elements such as various highlighting attributes by increasing the number of bits.

In the example of FIG. 3, (a), (b),
The record 11 shown in (d) has a standard attribute, and the records 11 shown in (c), (e) and (f) of the same figure have a ruled line record attribute. Further, the record 11 shown in FIGS. 8D and 8E also has a delete record attribute.

In the apparatus of this embodiment shown in FIG. 1, based on these attributes (attributes set in the record attribute section 111 of the record 11), each software (business program 31) is set as an operation target. The range of the record 11 can be changed.

For example, in the file editing software which handles all of the above three attributes, FIG.
Although it is possible to refer to all the records 11 shown in (f) and change their attributes (such as removing the deleted record attributes to recover the record 11 from the deleted state), software that handles only some attributes , You can't do that.

Therefore, for example, in the software which only displays the file contents, the value "110" for designating the standard attribute and the ruled line record attribute is set in the current attribute storage unit 29 in the step S2, whereby the deletion record is set. The record read operation unit 26 is arranged to hide the record having the attribute.
Can not refer to (read) the same record. Further, in software that only displays file contents and does not have a ruled line display function, by setting the value “100” that specifies only the standard attribute in the current attribute storage unit 29, only the record 11 having the standard attribute is set. Can be referenced.

[0050]

As described above in detail, according to the present invention,
The record attribute of the record is added to each record stored in the file, and whether or not the record is to be operated is determined based on this record attribute and the current attribute set in the current attribute storage means. Since the information is determined, it is possible to operate information having various attributes in a uniform procedure common to software (business programs) to be used.

Further, according to the present invention, since the range of the record to be operated in the file is determined according to the current attribute set in the current attribute storage means, it is set in the current attribute storage means. By changing the current attribute, unnecessary records can be hidden from software that operates only records that have a specific attribute, or software that does not operate records that have a specific attribute. Files created using can be easily used by other software.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of an information processing apparatus having a file management function according to an embodiment of the present invention.

FIG. 2 is a flowchart for explaining a basic operation in the same embodiment.

FIG. 3 is a diagram showing an example of a record having various attributes, for explaining the effect of the embodiment.

[Explanation of symbols]

1 ... Auxiliary storage device, 2 ... File management mechanism, 10 ... File, 11 ... Record, 21 ... Open operation part, 22 ...
Close operation unit, 23 ... Current attribute setting operation unit, 24 ... Record attribute update operation unit, 25 ... Record insertion operation unit (record attribute adding unit), 26 ... Record read operation unit (Record operation unit), 27 ... Record update operation Part, 2
8 ... Record delete operation unit, 29 ... Current attribute storage unit, 31
... Business program, 32 ... Business program execution unit, 33
... buffer, 111 ... attribute part (record attribute part), 11
2 ... Data part (record data part).

Claims (3)

[Claims] 1. In an information processing apparatus having a file management function, record attribute adding means for adding an attribute of a record used for controlling an operation of the record to each record stored in a file, Current attribute storage means for storing the attribute of the record to be operated as a current attribute, current attribute setting operation means for setting an arbitrary current attribute in the current attribute storage means, and the current attribute storage means for setting the current attribute storage means. Based on the present attribute and the record attribute attached to the record in the file, it is determined whether or not the record is to be operated, and the record operating means that operates the record according to the determination result. And changing the current attribute set in the current attribute storage means to be a target of operation in the file. An information processing apparatus having a file management function, characterized in that a code range is changed. 2. The record attribute adding means, when storing the record in the file, adds the current attribute set in the current attribute storage means to the record as the record attribute. An information processing apparatus having a file management function according to claim 1. 3. The information processing apparatus having a file management function according to claim 2, further comprising a record attribute update operation means for updating the record attribute attached to the record in the file.