JPH04182857A - Command processing system - Google Patents

Abstract

PURPOSE:To improve the operability of command input by referring to a command dictionary and a past command history table. CONSTITUTION:If the name of a command which is inputted from a console device 1 is wrong or if the command name or a parameter is partially omitted, the command dictionary 5 and command history table 6 are referred to and the command to be executed is decided. Then an input command character string is corrected or compensated.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a command processing method, and more specifically, to a data processing system that starts a target command program by inputting a command from a console device or the like. , even if the command name entered from the console device is not a command name that exists in the system as a command program, or if some command parameters are omitted, the command string is automatically corrected or supplemented and abbreviated. This relates to a command processing method that allows command input.

[Conventional technology]

Generally, in a data processing system that uses a console device to implement an interface with an operator, the operator instructs the system to execute a desired function by inputting commands from the console device.

By the way, a command is generally a character string accompanied by parameters, but due to input errors by the operator, the correct character string is often not given. In such a case, the system will reject the command as a command input error and the operator will have to re-enter the correct command string. Furthermore, when entering commands with the same parameters, they must be entered each time. If the command string is long,
It takes time to re-enter data, which significantly reduces operability.

For this reason, conventionally, the following methods have been considered.

■ Save command strings executed in the past, and when re-entering, call up the previously input command strings according to the operator's instructions, so that only incorrect characters or different parts such as parameters can be corrected and input.

■ When inputting a command, check part of the command name with the commands existing in the system according to the operator's instructions, and correct the command name if it can be uniquely determined, such as if there is a difference in characters.

(2) If the command name is correct but the parameters are incorrect, the incorrect parameter is recognized in the activated command program and the operator is instructed to re-enter only the parameter after that parameter.

Incidentally, there are, for example, the following known documents regarding labor saving in command input.

(b) ”A User Guide to the
UNIX System”.

Rebecca Thomas, Jean Yate
s, 0sborne/McGraw-Hill, 1
982 (b) “TM UNIX C5hell File
ed Guide-Gail Anderson, P.
rentice-Hall, 1986 (c) “0n
line help system: A cons
pecters''.

RoC, Houghton Jr.Commun, A
CM, 27゜2, p126.1984 (d) “The 1nterlisp program
ming environment”, W, Teit
lman, L, Master, Compute
r.

14.4. p25.1981 [Problem to be solved by the invention] In the conventional technology, even in the case of ■, it is necessary to search for and recall the command string input in the past, and even if there is a mistake in one character, ! ! ! Since it is necessary to understand the command string and perform a correction operation using a command character string editing function, the correction operation remains troublesome. In the case of (2), there are disadvantages such as the operator's instructions being required for the correction function to work, and the scope of correction being limited because only command names are compared. Also,■
In this case, there are drawbacks such as the inability to execute a command if the command name is incorrect and the need to incorporate correction logic into each command program.

An object of the present invention is to provide a data processing system that uses a console device or the like to perform an interface with an operator, when a command name in a command string input to the console device is incorrect, or when a command name or parameter is The purpose of the present invention is to improve the operability of command input by automatically correcting or supplementing even if a part is omitted.

[Means for Solving the Problem] In order to achieve the above object, the present invention provides a data processing system that starts a target program by a command input from a console device, etc. A command definition file that defines syntax information, a command history table that stores previously executed command strings in chronological order, and a command dictionary generated from the command definition file are provided. If some of the parameters are omitted or incorrect, the command dictionary and command history table are referred to to determine the command to be executed, and the command string is corrected or supplemented.

[Function] In the present invention, a command definition file that defines command syntax information such as command name and parameter format, and a command history table that stores executed command strings in chronological order are prepared. The command dictionary generated from the command history and command definition file is used to determine the command to be executed, and the input command string is automatically corrected or supplemented.

Furthermore, by using a command definition file, command format checks and corrections can be performed in place of individual command programs, thereby simplifying the command programs by eliminating the need for processing within each command program.

【Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall functional block diagram of an embodiment of the present invention. In FIG. 1, 1 is a console device for inputting commands, 2 is a console driver that controls the console device 1, 3 is a command program that executes commands, and 4 is a command processor that executes the main functions of the present invention. , 5 is a command dictionary that holds command format information, 6 is a command history table that holds previously executed command strings, and 7 is a command definition file that stores information for creating the command dictionary.

First, the contents of the command definition file 7, command dictionary 5, and command history table 6 will be explained.

The command definition file 7, as shown in the example in Figure 2,
This is a file in which command syntax information is written for each command program 3 existing in the system.

For example, consider a Copy command in the following format that copies a file.

copy [-ol (-s Transfer source device name) Transfer source file bus name Transfer destination file bus name The parameters have the following meanings.

102 File overwrite option (if omitted, does not overwrite if there is an existing file with the same name at the transfer destination) -8: Option to specify the transfer source device file name (if omitted, copy on disk) transfer source file The bus name and transfer destination file bus name are positional parameters, and are strings of up to 256 characters.In this case, the command definition information is as follows according to the definition shown in FIG.

CMMAND: copy PARAMETER knee 0+ + + l -n -s, str, 256. /dev/*, dkl, str
, 256. .

2, str, 256. .

USAGE: copy[-o1to5Device,
file:l 5source, file Dest,,
The file command dictionary 5 is a data structure in a binary tree structure that stores the following information created by reading the information in the command definition file 7 for each command.

■Command name ■Number of parameters (maximum/minimum number of parameters) ■Parameter format information Parameter format: Identification whether the parameter is a positional parameter Attribute: Attribute specification range of parameter value, possible range selection value of parameter value:
Constraints on the values that parameter values can take Default values! Default value when the parameter is omitted ■Command specification format information Character string information that describes the input format of the command ■Node pointer Pointer information to the data that constitutes the binary tree Command dictionary 5 created from the command definition file 7
An example of this is shown in FIG. That is, the command dictionary 5 stores data in a binary tree data structure as shown in FIG. 3(a). Each node of the binary tree holds the information shown in FIG. 3('b).

The command history table 6 holds previously input command strings in the following storage format.

■ Sort and store the input command r by the first alphabet of the command string.

■ Within each alphabetical category, data is stored in the order of input time. However, if there are identical command strings, the old one will be deleted.

An example of the storage format of the command history table 6 is shown in FIG.

Here, 11 is the alphabet table, 11-a~
11-1 is a group of command character strings stored in the order of input time within each alphabet a to 2 classification. Note that the continuity of the information can be guaranteed by reading the information in the command history table 6 from a medium such as a magnetic disk when starting up the system and writing it to the medium when the system ends.

Next, the processing in the command processor 4 will be explained with reference to FIG.

In FIG. 1, a command character string input from a console device 1 is passed from a console driver 2 to a command processor 4 in order to start a program targeted by a command program 3. FIG. 5 shows the processing procedure performed by the command processor 4 after the command character string is input.

(1) Command name search The command processor 4 refers to the command dictionary 5 and searches for a matching command name (steps 101 and 102).
. If there is a matching command name, proceed to the parameter check process (3).

If the input command name and the command name in the command dictionary 5 do not match, the process moves to (2) command candidate search.

(2) Command candidate search The input command name is compared with the command name in the command dictionary 5, and those matching the following conditions are extracted (step 11o).

a. A command that partially matches the characters from the beginning of the command name. For example, in the example in Figure 3, the command name is "com".
, the command name starting with “com” will be “
comm” only.

Furthermore, when "co" is input, there are two command names starting with "co": "'copy" and "comm".

In this way, commands that partially match the characters from the beginning of the command name are extracted.

b A command in which only specific adjacent characters are inverted. For example, in the example in Figure 3, the command name is II 'copyI
If + is given, extract "copy".

For example, a command with a mismatch in only one character of the C command name.
In the example in Figure 3, if the command name "copt" is given, "copy" is extracted. A command with one partial character added to the command name. If "copyU" is given, "copy" is extracted.

As a result of the above search, if there are two or more applicable command names, the command history table 6 is further referred to and the command name of the latest command history that matches the command name extracted above among previously executed commands is selected as a command candidate. Select as.

Determine whether the command candidates have been narrowed down to one from the above search results (step 111). If one command candidate is extracted, the input command name is corrected to the extracted command name, and a command name correction flag is set. (Step 1
12). After this, the process proceeds to the parameter check process (3).

Further, if there is no command matching the condition, or if there is no matching command in the command history table 6 and the candidates cannot be narrowed down to one, steps 117) and (7) are performed to display a command name error.

(3) Parameter check process Checks whether the number of parameters of the input command matches the format of the corresponding command by referring to the command dictionary 5 (step 103). If the number of parameters is insufficient, (6) Move on to command history table search processing.

If the number of parameters is correct, the format of each parameter is checked according to the command dictionary 5 (step 104).

If the parameter format is correct, proceed to the default parameter setting process (5).

If there is an invalid parameter, perform the invalid parameter correction process (4).

(4) Invalid parameter correction If there is an invalid parameter by parameter check,
For invalid parameters, the correct parameter format described in the command dictionary 5 is displayed, and correction input from the operator is accepted.

When the operator inputs a corrected parameter, the corresponding parameter portion of the command string is changed.

This process is repeated until there are no invalid parameter formats (step 109).

(5) Default parameter value setting If the optional parameter format is omitted, the default value described in the command dictionary 5 is added as a parameter (step 105). Then check if the command name modification flag is set in step 1.
06), if it is set, perform the process of (7), and if it is not set, proceed to the process of (8).

(6) Command history table search If the number of parameters is insufficient, the command history table 6 is searched based on the command name, and the command with the same name and the latest time is retrieved (step 113). The missing parameter portion of the input command string is extracted from the extracted command string and added to the input command string (step 115).

Note that if there is no matching command in the command history table 6, the command format information in the command dictionary 5 is displayed in step 114) and the process moves to steps 117) and (7).

(7) Command string display/confirmation/correction The command string is displayed and made available to the operator (step 116).

The operator confirms whether the displayed command string is the one intended, and if it is correct, presses the RETURN key to instruct execution. If corrections are necessary, make them and then press the RETURN key.

If the command name is incorrect and cannot be corrected before the command string is displayed, the command name error will be displayed, and if there is no matching command in the command history chiller 6, the command format will be displayed. conduct. At this time, the displayed command string is the same as the one input by the operator, except for the uncorrectable portion.

(8) Registration in command history table A command string with a correct parameter format is registered in the command history table 6 (step 107).

(9) Start the command program 3 corresponding to the command execution command name,
Pass parameters (step 108).

Note that in the above description, for convenience, the processes (1) and (2) have been described as separate processes, but they can be processed simultaneously.

[Effects of the Invention] As is clear from the above description, according to the present invention, even if the command string input by the operator is omitted or incorrect, the command dictionary is incorrect and cannot be corrected. If there is no matching command in the command history table 6, the command format is displayed. In this case, the uncorrectable parts of the displayed command string are the same as those entered by the operator.9 (8) Register in the command history table Register the command string with the correct parameter format in the command history table 6. (Step 107).

(9) Start the command program 3 corresponding to the command execution command name,
Pass parameters (step 108).

Note that in the above description, for convenience, the processes (1) and (2) have been described as separate processes, but they can be processed simultaneously.

C. Effects of the Invention] As is clear from the above description, according to the present invention, even if the command string input by the operator is omitted or incorrect, the command dictionary and past command history information can be maintained. By referring to , automatic correction is possible within certain limits, and the following effects can be obtained.

(]) Even if the command name is omitted or is not a regular command name, the command name can be estimated and corrected by checking for partiality with the command name in the command dictionary and by checking the history of past human-generated commands. I can do it. For this reason, 1. For example, the characters after the command name can be omitted as long as the command name can be uniquely determined.

(2) When a command parameter is omitted, the parameter is supplemented from the same command executed in the past, so when a command is executed with the same parameter, the parameter can be omitted. As a result, the most recently executed command can be specified by inputting the first character of the command name.

(3) Since command format information is held in the command dictionary, command parameter checking and correction input processing can be performed in place of individual command programs. It is also possible to display correct input format information in the event of an input error. Therefore, there is no need to check the parameters of each command program, and there is no need to display command format information in the event of an error.

[Brief explanation of drawings]

FIG. 1 is an overall functional block diagram of an embodiment of the present invention, and FIG.
Figure 3 shows the contents of the command definition file that defines the command format, Figure 3 shows the command dictionary created from the command definition file, Figure 4 shows the command history table, and Figure 5 shows the contents of the command definition file of the present invention. It is a flowchart showing the processing procedure of one embodiment. DESCRIPTION OF SYMBOLS 1...Console device, 2...Console driver, 3...Command program, 4...Command processor, 5...Command dictionary, 6...Command history table, 7...Command definition file . Figure 1 Figure 2 Off' Punpun Document (1 and position lg parameter beak tome l5 IIl; The result is i@a (4-
q1p Iwometer no Saki 4 total Figure 3 (＾) Figure 3 (Figure 4 II
ia.

Claims (1)

[Claims] (1) In a data processing system that starts a target program based on an input command, the command name,
A command definition file that defines command syntax information such as parameter format, and a command history table that stores previously executed command strings in chronological order.
A command dictionary generated from the command definition file is provided, and when a part of the input command name or parameter is omitted or incorrect, the command dictionary and command history table are referred to determine the command to be executed. , a command processing method characterized by modifying or supplementing a command string.