CN112905159A - File clearance method based on CVI - Google Patents

Abstract

The invention discloses a folder emptying method based on CVI, which deletes all types of files by utilizing a multi-layer function calling mode, and realizes the function of emptying and deleting a folder containing one or more layers of file paths on a CVI development platform by combining two modes of function nesting calling and recursive calling. The invention realizes the quick deletion of all types of files and paths in all levels in the folder specified by the user, and greatly reduces the code development and test workload of the related functions of the test control software development.

Description

File clearance method based on CVI

Technical Field

The invention belongs to the technical field of software development, and particularly relates to a folder emptying method based on a CVI (visual basic input/output).

Background

CVI is an interactive C language development platform introduced by the national instruments company of America, is provided with a rich resource library for measurement, analysis and engineering UI design in the CVI, and is widely applied in the field of measurement and control. The software developer can utilize the measurement and control program determined by the software developer aiming at the special device development function, wherein the measurement and control program often comprises hardware operation such as deletion of files.

CVI provides a developer with a function DeleteFile () for deleting a single specific file and a function DeleteDir () for deleting an empty file path (i.e., an empty folder), but does not provide a function for clearing a folder containing one or more hierarchical file paths. When the measurement and control software function based on the CVI needs to realize quick clearing and deletion of the folder containing the complex path, a developer will increase a large amount of workload of code development and testing.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a folder emptying method based on CVI, so that the folder function of emptying and deleting a folder containing one or more layers of file paths based on a CVI development platform is realized.

In order to solve the technical problem, the method for clearing the folder based on the CVI provided by the invention comprises the following steps:

step S1, obtaining a target folder, namely a target path to be emptied and deleted, by using a CVI standard function DirSelectPop ();

step S2, design function DeleteFileAll (): deleting all files in the top layer of the target path in a query-by-query mode by utilizing a CVI standard function GetFirstFile (), GetNextFile () and DeleteFile ();

step S3, design function DeleteFolderAll (): utilizing CVI standard functions GetFirstFile () and DeleteDir (), and nesting calling the function DeleteFileAll () in the step S2, calling the function DeleteFolderAll () in the step S3 by combining a recursive calling method, and deleting all folders in the top layer of the target path in a one-by-one query mode;

and step S4, deleting the target folder by using a CVI standard function DeleteDir (), namely emptying and deleting the target path.

Compared with the prior art, the invention has the beneficial effects that:

1. the file folder function for emptying and deleting the file path with one or more layers on the CVI development platform is realized by deleting all types of files in a multi-layer function calling mode and combining a function nesting calling mode and a recursive calling mode.

2. The CVI platform is used for developing application software, and a mode of replacing manual operation with one key is adopted, so that all types of files and paths in all levels in a folder designated by a user can be deleted quickly.

3. The code development and test workload of the related functions of the test control software development is greatly reduced.

Drawings

Fig. 1 is a flowchart illustrating a CVI-based folder emptying method according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is a schematic flowchart of a CVI-based folder emptying method according to an embodiment of the present invention, which specifically includes the following steps:

step S1, obtain the target folder, i.e. the target path to be cleared and deleted, by using the CVI standard function DirSelectPopup (). If the folder "AB" in "E: \ administration \", i.e. the path "E: \ administration \ AB \".

Step S2, designing a function DeleteFileAll (), deleting all files in the top layer of the target path, and realizing the following steps:

s2.1, calling a CVI standard function GetFirstFile () to inquire any file in the top layer of the target path, and calling a CVI standard function DeleteFile () to delete the file;

s2.2, calling a CVI standard function GetNextFile () to inquire any other file in the top layer, and calling a CVI standard function DeleteFile () to delete the file;

and S2.3, circulating the step S2.2, and deleting all the files in the top layer one by one.

Specific code implementations are shown below.

Step S3, designing a function DeleteFolderAll (), deleting all folders in the top layer of the target path, and realizing the following steps:

s3.1, calling a CVI standard function GetFirstFile () to inquire any folder in the top layer of the target path;

s3.2, nesting and calling the function DeleteFileAll () of the step S2 to delete all files in the folder;

step S3.3, calling a function DeleteFolderAll () of the step S3 by combining a recursive calling method to delete all folders and all files below the folders;

s3.4, when the folder is emptied, calling a CVI standard function DeleteDir () to delete the folder;

and S3.5, circulating the steps S3.1 to S3.4, and deleting other folders in the top layer of the target path one by one.

Specific code implementations are shown below.

4. At this time, the target folder is emptied, and the folder is deleted by using a CVI standard function DeleteDir (), namely, the target path is emptied and deleted.

Claims (3)

1. A method for clearing a folder based on CVI comprises the following steps:

step S1, obtaining a target folder, namely a target path to be emptied and deleted, by using a CVI standard function DirSelectPop ();

step S2, design function DeleteFileAll (): deleting all files in the top layer of the target path in a query-by-query mode by utilizing a CVI standard function GetFirstFile (), GetNextFile () and DeleteFile ();

step S3, design function DeleteFolderAll (): utilizing CVI standard functions GetFirstFile () and DeleteDir (), and nesting calling the function DeleteFileAll () in the step S2, calling the function DeleteFolderAll () in the step S3 by combining a recursive calling method, and deleting all folders in the top layer of the target path in a one-by-one query mode;

and step S4, deleting the target folder by using a CVI standard function DeleteDir (), namely emptying and deleting the target path.

2. The CVI-based folder emptying method as claimed in claim 1, wherein said step S2 includes the steps of:

s2.1, calling a CVI standard function GetFirstFile () to inquire any file in the top layer of the target path, and calling a CVI standard function DeleteFile () to delete the file;

s2.2, calling a CVI standard function GetNextFile () to inquire any other file in the top layer, and calling a CVI standard function DeleteFile () to delete the file;

and S2.3, circulating the step S2.2, and deleting all the files in the top layer one by one.

3. A method of CVI-based folder emptying as claimed in claim 1 or 2, wherein said step S3 includes the steps of:

s3.1, calling a CVI standard function GetFirstFile () to inquire any folder in the top layer of the target path;

s3.2, nesting and calling the function DeleteFileAll () of the step S2 to delete all files in the folder;

step S3.3, calling a function DeleteFolderAll () of the step S3 by combining a recursive calling method to delete all folders and all files below the folders;

s3.4, when the folder is emptied, calling a CVI standard function DeleteDir () to delete the folder;

and S3.5, circulating the steps S3.1 to S3.4, and deleting other folders in the top layer of the target path one by one.

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