CN104965916A - Method and device for determining file to be cleaned - Google Patents

Abstract

The embodiment of the invention discloses a method and a device for determining a file to be cleaned, wherein a storage space is scanned to extract first type characteristic information and second type characteristic information of a target file; judging whether the first type characteristic information of the target file is the same as the first type characteristic information of the cleanable file or not; under the condition that the first type of feature information of the target file is the same as the first type of feature information of the cleanable file, judging whether the similarity between the second type of feature information of the target file and the second type of feature information of the cleanable file exceeds a preset similarity threshold value or not; and determining whether the target file is the file to be cleaned or not according to the judgment result. The file to be cleaned is determined to be the file to be cleaned under the condition that the number of the characteristic information of the cleanable file in the cleanable file list is not increased, no extra storage space is occupied, and the operation burden of the system caused by the comparison process is small.

Description

Method and device for determining file to be cleaned

Technical Field

The invention relates to the technical field of data processing, in particular to a method and a device for determining a file to be cleaned.

Background

Various application programs are installed in the mobile device, and during the process of using the mobile device by a user, the application programs may create files, for example, some pictures received by the application programs may be stored in picture files, some data required during the operation of the application programs may be stored in cache files, and the picture files or cache files may not be required after being used, but occupy a large amount of storage space of the mobile device, resulting in insufficient storage space of the mobile device. It is therefore necessary to clean these files to free up storage space on the mobile device.

According to the prior art, in order to clean a file of a mobile device, a cleanable file list is required to be preset, and file characteristic information (such as a path of the file, a name of an application installation package to which the file belongs) of a plurality of known cleanable files is recorded in the list. When the file is cleaned, firstly, the storage space of the mobile terminal is scanned, the feature information of the file in the storage space is extracted, the extracted feature information is compared with the feature information recorded in the list, and if all the feature information of a known file which can be cleaned and is recorded in the list is respectively consistent with the corresponding feature information of a certain file in the storage space, the file in the storage space is determined to be the file which can be cleaned.

According to the prior art scheme, all feature information of a known cleanable file recorded in the list is required to be consistent with corresponding feature information of a certain file in the storage space respectively, so that the file in the storage space is allowed to be cleaned. In order to reduce the probability of being cleaned, manufacturers of application programs corresponding to cleanable files often change some minor changes to part of feature information of the cleanable files, for example, change one word in the name of an installation package, so that the existing cleaning technology cannot identify the files with changed feature information as cleanable files and does not clean the files with changed feature information. The prior art solves this problem by adding the changed feature information to the cleanable file list in time. However, the increase of the feature information occupies extra space, and the feature information to be compared is more when the feature information is compared, thereby increasing the operation burden on the system caused by the comparison process.

Disclosure of Invention

The embodiment of the invention aims to provide a method and a device for determining files to be cleaned, so as to determine the files to be cleaned under the condition that the quantity of characteristic information of the files to be cleaned in a file list to be cleaned is not increased.

In order to achieve the above object, an embodiment of the present invention discloses a method for determining a file to be cleaned, including:

scanning the storage space, and extracting first type characteristic information and second type characteristic information of the target file;

judging whether the first type feature information of the target file is the same as the first type feature information of the cleanable file or not according to a preset cleanable file list;

under the condition that the first type feature information of the target file is the same as the first type feature information of the cleanable file, judging whether the similarity between the second type feature information of the target file and the second type feature information of the cleanable file exceeds a preset similarity threshold value or not;

and determining whether the target file is a file to be cleaned or not according to the judgment result.

Optionally, the scanning the storage space to extract the first type feature information and the second type feature information of the target file includes:

receiving a scanning starting instruction of a user;

scanning the storage space according to the scanning starting instruction, and extracting first type characteristic information and second type characteristic information of the target file;

or,

judging whether a preset time condition is met or not;

and under the condition of meeting a preset time condition, scanning the storage space, and extracting the first type characteristic information and the second type characteristic information of the target file.

Optionally, the determining whether the preset time condition is met includes:

judging whether the current moment reaches a preset scanning time point or not; or,

and judging whether the time length passed after the last scanning reaches a preset time length threshold value.

Optionally, the determining, when the first type of feature information of the target file is the same as the first type of feature information of the cleanable file, whether a similarity between the second type of feature information of the target file and the second type of feature information of the cleanable file exceeds a preset similarity threshold includes:

under the condition that the path of the target file is the same as the path of the cleanable file, acquiring the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs;

calculating the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs;

judging whether the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold value or not;

and under the condition that the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold, determining that the similarity between the second type characteristic information of the target file and the second type characteristic information of the cleanable file exceeds a preset similarity threshold.

Optionally, the determining whether the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold includes:

the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs are respectively segmented into a plurality of installation package name segments according to character segments;

judging whether an installation package name fragment which is the same as or similar to at least one installation package name fragment of the application program to which the cleanable file belongs exists in a plurality of installation package name fragments of the application program to which the target file belongs, wherein the similarity refers to the similarity that the similarity of the installation package name fragment of the application program to which the target file belongs and the installation package name fragment of the application program to which the cleanable file belongs exceeds a preset second text similarity threshold value;

and if so, determining that the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold.

Optionally, the determining whether the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold further includes:

acquiring classification information of installation package names of the application programs to which the target files belong under the condition that installation package name fragments which are the same as or similar to at least one installation package name fragment of the application programs to which the cleanable files belong do not exist in the installation package name fragments of the application programs to which the target files belong;

acquiring classification information of installation package names of application programs to which cleanable files belong;

judging whether the classification information of the installation package name of the application program to which the target file belongs is consistent with the classification information of the installation package name of the application program to which the cleanable file belongs;

and under the condition that the classification information of the installation package name of the application program to which the target file belongs is consistent with the classification information of the installation package name of the application program to which the cleanable file belongs, determining that the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold.

Optionally, the determining, according to the determination result, whether the target file is a file to be cleaned includes:

under the condition that the similarity between the second type of feature information of the target file and the second type of feature information of the cleanable file exceeds a preset similarity threshold, judging whether the user cleaning frequency of the cleanable file exceeds a preset value or not according to a preset cleanable file list;

and determining the target file as a file to be cleaned under the condition that the user cleaning times of the cleanable file exceed a preset value.

A to-be-cleaned file determining apparatus comprising:

the extraction module is used for scanning the storage space and extracting the first type characteristic information and the second type characteristic information of the target file;

the first judging module is used for judging whether the first type of feature information of the target file is the same as the first type of feature information of the cleanable file or not according to a preset cleanable file list;

the second judging module is used for judging whether the similarity between the second type characteristic information of the target file and the second type characteristic information of the cleanable file exceeds a preset similarity threshold value or not under the condition that the first type characteristic information of the target file is the same as the first type characteristic information of the cleanable file;

and the determining module is used for determining whether the target file is a file to be cleaned according to the judgment result of the second judging module.

Optionally, the extracting module includes:

a receiving unit for receiving a scanning start instruction of a user;

the first extraction unit is used for scanning the storage space according to the scanning starting instruction received by the receiving unit and extracting the first type characteristic information and the second type characteristic information of the target file;

the first judgment unit is used for judging whether a preset time condition is met or not;

and the second extraction unit is used for scanning the storage space and extracting the first type characteristic information and the second type characteristic information of the target file under the condition that the judgment unit judges that the preset time condition is met.

Optionally, the first determining unit is specifically configured to:

judging whether the current moment reaches a preset scanning time point or not; or,

and judging whether the time length passed after the last scanning reaches a preset time length threshold value.

Optionally, the first type of feature information is a path, the second type of feature information is an installation package name, and the second determining module includes:

a package name obtaining unit, configured to obtain an installation package name of an application program to which the target file belongs and an installation package name of an application program to which the cleanable file belongs, when a path of the target file is the same as a path of the cleanable file;

the similarity calculation unit is used for calculating the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs;

the second judging unit is used for judging whether the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold value or not;

and the first determining unit is used for determining that the similarity between the second type characteristic information of the target file and the second type characteristic information of the cleanable file exceeds a preset similarity threshold under the condition that the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold.

Optionally, the second determining unit includes:

the segmentation subunit is used for segmenting the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs into a plurality of installation package name segments according to character segments respectively;

a first judging subunit, configured to judge whether an installation package name fragment that is the same as or similar to at least one installation package name fragment of an application program to which the cleanable file belongs exists in multiple installation package name fragments of the application program to which the target file belongs, where the similarity refers to that a similarity between the installation package name fragment of the application program to which the target file belongs and the installation package name fragment of the application program to which the cleanable file belongs exceeds a preset second text similarity threshold;

a first determining subunit, configured to determine that, when an installation package name fragment that is the same as or similar to at least one installation package name fragment of the application program to which the cleanable file belongs does not exist in the plurality of installation package name fragments of the application program to which the target file belongs, a similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold.

Optionally, the second determining unit further includes:

a first obtaining subunit, configured to, in a case where an installation package name fragment that is the same as or similar to at least one installation package name fragment of an application program to which the cleanable file belongs does not exist in a plurality of installation package name fragments of the application program to which the target file belongs, obtain classification information of an installation package name of the application program to which the target file belongs;

a second obtaining subunit, configured to obtain, when an installation package name fragment that is the same as or similar to at least one installation package name fragment of the application program to which the cleanable file belongs does not exist in the plurality of installation package name fragments of the application program to which the target file belongs, classification information of an installation package name of the application program to which the cleanable file belongs;

a second judging subunit, configured to judge whether the classification information of the installation package name of the application program to which the target file belongs, acquired by the first acquiring subunit, is consistent with the classification information of the installation package name of the application program to which the cleanable file belongs, acquired by the second acquiring subunit;

and the second determining subunit is configured to determine that, when the determination result of the second determining subunit is yes, the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold.

Optionally, the determining module includes:

a third judging unit, configured to, when the second judging module judges that the second file is a file, judge whether the user cleaning frequency of the cleanable file exceeds a preset value according to a preset cleanable file list;

and the second determining unit is used for determining the target file as the file to be cleaned under the condition that the user cleaning times of the cleanable file exceeds a preset value.

According to the technical scheme provided by the embodiment of the invention, the storage space is scanned, and the first type characteristic information and the second type characteristic information of the target file are extracted; judging whether the first type characteristic information of the target file is the same as the first type characteristic information of the cleanable file or not; under the condition that the first type of feature information of the target file is the same as the first type of feature information of the cleanable file, judging whether the similarity between the second type of feature information of the target file and the second type of feature information of the cleanable file exceeds a preset similarity threshold value or not; and determining whether the target file is the file to be cleaned or not according to the judgment result. According to the technical scheme provided by the embodiment of the invention, the files to be cleaned can be determined by the first class of feature information being the same and the similarity of the second class of feature information meeting the preset similarity threshold, so that the matching standard between the target file and the cleanable file is reduced. Therefore, when part of characteristic information of the cleanable file slightly changes, the file can be determined as the file to be cleaned under the condition that the quantity of the characteristic information of the cleanable file in the cleanable file list is not increased, no extra storage space is occupied, and the operation burden on a system caused by the comparison process is small.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a first flowchart of a method for determining a file to be cleaned according to an embodiment of the present invention;

fig. 2 is a flowchart of a to-be-cleaned file determining method according to an embodiment of the present invention;

fig. 3 is a flow chart of a method for determining a file to be cleaned according to an embodiment of the present invention;

fig. 4 is a fourth flowchart of a method for determining a file to be cleaned according to an embodiment of the present invention;

fig. 5 is a flowchart of a method for determining a file to be cleaned according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a to-be-cleaned file determining apparatus according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, an embodiment of the present invention provides a method for determining a file to be cleaned, where the method may include the following steps:

s100: scanning the storage space, and extracting first type characteristic information and second type characteristic information of the target file;

the first type of feature information may be a path, and the second type of feature information may be an installation package name. Of course, the first type feature information may also be other feature information, such as classification information of the installation package name of the application program to which the target file belongs; the second type of characteristic information may also be other characteristic information, such as data volume information of the target file.

Specifically, the files in the storage space of the mobile device may be scanned one by one, the scanned files are all determined as target files, and when one target file is scanned, the feature information of the target file is extracted, for example: the path of the target file and the installation package name of the application program to which the target file belongs. Specifically, the path may be extracted from the attribute information of the target file. In the embodiment of the invention, the application programs are all the application programs installed under the android system, so that the installation package names of the application programs conform to the names of the android application programs. For example, com.mstar.games.chess.xxx, denotes mstar corporation, game item group, chinese chess item, XXX is the name of a specific application program.

In the embodiment of the invention, the storage space can be scanned by receiving a file cleaning instruction of a user; when an instruction of a user for cleaning files is received, scanning a storage space according to the instruction for cleaning the files, and extracting first-class characteristic information and second-class characteristic information of a target file; or a time condition can be preset, and whether the preset time condition is met or not is judged; and under the condition of meeting a preset time condition, scanning the storage space, and extracting the first type characteristic information and the second type characteristic information of the target file.

Namely: step S100 may include:

receiving a scanning starting instruction of a user;

scanning the storage space according to the scanning starting instruction, and extracting first type characteristic information and second type characteristic information of the target file;

or,

judging whether a preset time condition is met or not;

and under the condition of meeting a preset time condition, scanning the storage space, and extracting the first type characteristic information and the second type characteristic information of the target file.

Specifically, the determining whether the preset time condition is satisfied may include: judging whether the current moment reaches a preset scanning time point or not; or judging whether the time length passed after the last scanning reaches a preset time length threshold value. For example, 12 pm of each day is set as the scanning time point, and when it is determined that 12 pm has been reached, scanning of the storage space of the mobile device is started. The time length threshold between two times of scanning can be preset to be one day, and after one time of scanning is finished, the time of one day is judged to be reached, and the storage space of the mobile device is scanned.

It should be noted that, in the embodiment of the present invention, there is no limitation on how to start scanning, and there is no limitation on a preset time condition, and a user may arbitrarily set a mode of starting scanning, and may also arbitrarily set a time condition.

S200: judging whether the first type feature information of the target file is the same as the first type feature information of the cleanable file or not according to a preset cleanable file list;

the preset cleanable file list is a preset list which is judged to be cleanable files, the cleanable file list comprises characteristic information of all cleanable files, each cleanable file can further comprise user cleaning times, and the user cleaning times can be obtained by counting user identifications carried by the cleanable files.

In the embodiment of the invention, whether the first type of characteristic information of the target file is the same as the first type of characteristic information of the cleanable file is judged, and if not, the target file is determined not to be the file to be cleaned.

S300: under the condition that the first type feature information of the target file is the same as the first type feature information of the cleanable file, judging whether the similarity between the second type feature information of the target file and the second type feature information of the cleanable file exceeds a preset similarity threshold value or not;

the following description will be given by taking the first type of feature information as a path and the second type of feature information as an installation package name:

in practice, a user may download many applications in a mobile device, and some applications, especially applications of the same type or different versions, may generate files in the same path during installation or during use, and the files in the same path are distinguished by the installation package name of the application to which the files belong. In the prior art, under the condition that the path of the target file is the same as the path of the cleanable file, whether the installation package name of the application program to which the target file belongs is the same as the installation package name of the application program to which the cleanable file belongs is further judged, the cleanable file with the same installation package name also exists in the cleanable file list, and when the types of the application programs are increased, the cleanable file list also needs to be added with new feature information to thoroughly clean the file. The method and the device can judge whether the similarity between the second type of characteristic information of the target file and the second type of characteristic information of the cleanable file exceeds a preset similarity threshold value or not under the condition that the first type of characteristic information of the target file is the same as the first type of characteristic information of the cleanable file, and do not need all the characteristics of the files to be the same. When part of feature information of the cleanable file slightly changes, the similarity of the feature information before and after the change is high, so the cleanable file can be identified by using the feature information before the change without adding new feature information.

S400: and determining whether the target file is the file to be cleaned or not according to the judgment result.

In the embodiment of the invention, when the judgment result shows that the similarity between the second type characteristic information of the target file and the second type characteristic information of the cleanable file does not exceed the preset similarity threshold, the target file is directly determined not to be the file to be cleaned. And when the judgment result shows that the similarity between the second type of characteristic information of the target file and the second type of characteristic information of the cleanable file exceeds a preset similarity threshold, directly determining that the target file is the file to be cleaned. In order to ensure the accuracy of the obtained file to be cleaned, the user cleaning times of the file to be cleaned in the file list which is matched with the target file and can be cleaned are continuously judged, and the target file is determined to be the file to be cleaned under the condition that the user cleaning times are larger than a certain threshold value. The user cleaning times of the cleanable files in the cleanable file list are obtained by counting user identifications carried by the cleanable files when the cleanable files are uploaded by a user, and the user identifications can be counted to know how many users clean the cleanable files.

Thus, S400 may include:

under the condition that the similarity between the second type of feature information of the target file and the second type of feature information of the cleanable file exceeds a preset similarity threshold, judging whether the user cleaning frequency of the cleanable file exceeds a preset value or not according to a preset cleanable file list;

and determining the target file as a file to be cleaned under the condition that the user cleaning times of the cleanable file exceed a preset value.

The method for determining the file to be cleaned provided by the embodiment of the invention comprises the steps of scanning a storage space, and extracting first type characteristic information and second type characteristic information of a target file; judging whether the first type characteristic information of the target file is the same as the first type characteristic information of the cleanable file or not; under the condition that the first type of feature information of the target file is the same as the first type of feature information of the cleanable file, judging whether the similarity between the second type of feature information of the target file and the second type of feature information of the cleanable file exceeds a preset similarity threshold value or not; and determining whether the target file is the file to be cleaned or not according to the judgment result. According to the technical scheme provided by the embodiment of the invention, the files to be cleaned can be determined by the first class of feature information being the same and the similarity of the second class of feature information meeting the preset similarity threshold, so that the matching standard between the target file and the cleanable file is reduced. Therefore, when part of characteristic information of the cleanable file slightly changes, the file can be determined as the file to be cleaned under the condition that the quantity of the characteristic information of the cleanable file in the cleanable file list is not increased, no extra storage space is occupied, and the operation burden on a system caused by the comparison process is small.

On the basis of the foregoing embodiment, as shown in fig. 2, the method for determining a file to be cleaned according to an embodiment of the present invention may further include:

s500: displaying a file to be cleaned;

in the embodiment of the invention, after the file to be cleaned is determined, the file to be cleaned is displayed on the display interface of the mobile equipment.

It should be noted that after the file to be cleaned is determined, the file to be cleaned may be cleaned directly, but in order to enable a user to know the file to be cleaned more clearly, in the embodiment of the present invention, the file to be cleaned may be displayed on the display interface of the mobile device, and the user may clearly see the file to be cleaned, so as to prevent erroneous cleaning.

S600: receiving an operation of a user for cleaning a displayed file to be cleaned;

specifically, a control for receiving a user to execute a cleaning operation is provided on a displayed interface of the file to be cleaned, and the cleaning operation is executed by receiving a click of the user on the control.

It should be noted that a control for one-touch cleaning may be provided on the display interface, and a selectable control may be provided beside each cleanable file, so that the user may select a file to be cleaned that needs to be cleaned.

S700: and cleaning the file to be cleaned according to the cleaning operation executed by the user.

According to the embodiment of the invention, the files to be cleaned are displayed, and the files to be cleaned are cleaned after the cleaning operation executed by the user is received, so that the user can know the files to be cleaned more clearly, and the mistaken cleaning is prevented.

On the basis of the above embodiment, as shown in fig. 3, the step S300 may include the steps of:

s310, under the condition that the path of the target file is the same as that of the cleanable file, acquiring the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs;

s320, calculating the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs;

s330, judging whether the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold value or not;

s340, under the condition that the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold, determining that the similarity between the second type feature information of the target file and the second type feature information of the cleanable file exceeds a preset similarity threshold.

Under the condition that the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs does not exceed a preset first text similarity threshold, it can be determined that the similarity between the second-class feature information of the target file and the second-class feature information of the cleanable file does not exceed a preset similarity threshold.

As shown in fig. 4, step S330 may include:

s331, segmenting the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs into a plurality of installation package name segments according to character segments respectively;

specifically, the splitting of the installation package name into the multiple installation package name fragments according to the character segments may be performed according to a character ". for example, the installation package name of the target file is com. The installation package name of the cleanable file is also segmented in the same way.

S332, judging whether an installation package name fragment which is the same as or similar to at least one installation package name fragment of the application program to which the cleanable file belongs exists in the installation package name fragments of the application program to which the target file belongs, wherein the similarity refers to the fact that the similarity between the installation package name fragment of the application program to which the target file belongs and the installation package name fragment of the application program to which the cleanable file belongs exceeds a preset second text similarity threshold value;

specifically, common characters such as android, google, com and the like are removed from the installation package name fragment after the segmentation, and taking the installation package name of com. And comparing whether the installation package name fragment of the target file is similar to or identical to the installation package name fragment of the cleanable file.

S333, if the similarity exists, determining that the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold value.

If the similarity does not exceed the preset first text similarity threshold, the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs can be directly determined, and whether the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds the preset first text similarity threshold can also be determined according to the classification information of the installation package names of the application programs to which the files belong.

In the embodiment of the invention, whether the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold value can be determined by judging whether the installation package name segments after being segmented are the same or similar, and the changed feature information is not required to be used.

As shown in fig. 5, on the basis of the embodiment shown in fig. 4, in another method for determining a file to be cleaned according to the embodiment of the present invention, step S330 may further include:

s334, under the condition that an installation package name fragment which is the same as or similar to at least one installation package name fragment of the application program to which the cleanable file belongs does not exist in the installation package name fragments of the application program to which the target file belongs, obtaining classification information of the installation package name of the application program to which the target file belongs;

the classification information of the installation package name is the classification information of the application program, the classification information can comprise games, offices, instant messaging and the like, when the application program is developed, one classification information is given, and the classification information can be obtained by inquiring a known application program classification table.

S335, obtaining classification information of installation package names of the application programs to which the cleanable files belong;

the execution sequence of step S334 and step S335 may be any, and the present invention is not limited to this.

S336, judging whether the classification information of the installation package name of the application program to which the target file belongs is consistent with the classification information of the installation package name of the application program to which the cleanable file belongs;

s337, determining that the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold under the condition that the classification information of the installation package name of the application program to which the target file belongs is consistent with the classification information of the installation package name of the application program to which the cleanable file belongs.

If the similarity does not exceed the preset first text similarity threshold, the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs can be determined.

In the embodiment of the invention, as long as the classification information of the installation package name is judged to be consistent, the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs is determined to exceed the preset first text similarity threshold. For example, the same type of game application programs developed by different companies are different when the installation package name is taken, but the application programs belonging to the same type consider that the similarity of the installation package name exceeds a preset first text similarity threshold in the matching process.

It should be noted that, in the embodiment of the present invention, the classification information of the installation package name may also be directly obtained without determining that the installation package names are similar or identical.

In the embodiment of the invention, under the condition that similar or same installation package names do not exist, the classification information of the installation package names is obtained for matching, and as long as the classification information of the installation package names of the application programs to which the target files belong is consistent with the classification information of the installation package names of the application programs to which the cleanable files belong, the similarity between the installation package names of the application programs to which the target files belong and the installation package names of the application programs to which the cleanable files belong is determined to exceed the preset first text similarity threshold. The file to be cleaned is determined to be the file to be cleaned under the condition that the number of the characteristic information of the cleanable file in the cleanable file list is not increased, no extra storage space is occupied, and the operation burden of the system caused by the comparison process is small.

Corresponding to the above method embodiment, an embodiment of the present invention further provides a device for determining a file to be cleaned, where as shown in fig. 6, the device may include: an extraction module 100, a first judgment module 200, a second judgment module 300 and a determination module 400,

the extraction module 100 is configured to scan a storage space, and extract first type feature information and second type feature information of a target file;

the first type of feature information may be a path, and the second type of feature information may be an installation package name. Of course, the first type feature information may also be other feature information, such as classification information of the installation package name of the application program to which the target file belongs; the second type of characteristic information may also be other characteristic information, such as data volume information of the target file.

The extraction module 100 may include: the receiving unit and the first extracting unit, or the extracting module 100, may include: the first determining unit and the second extracting unit, or the extracting module 100, may include: a receiving unit, a first extracting unit, a first judging unit and a second extracting unit,

a receiving unit for receiving a scanning start instruction of a user;

the first extraction unit is used for scanning the storage space according to the scanning starting instruction received by the receiving unit and extracting the first type characteristic information and the second type characteristic information of the target file;

the first judgment unit is used for judging whether a preset time condition is met or not;

and the second extraction unit is used for scanning the storage space and extracting the first type characteristic information and the second type characteristic information of the target file under the condition that the judgment unit judges that the preset time condition is met.

The first determining unit is specifically configured to:

judging whether the current moment reaches a preset scanning time point or not; or,

and judging whether the time length passed after the last scanning reaches a preset time length threshold value.

For example, 12 pm of each day is set as the scanning time point, and when it is determined that 12 pm has been reached, scanning of the storage space of the mobile device is started. The time length threshold between two times of scanning can be preset to be one day, and after one time of scanning is finished, the time of one day is judged to be reached, and the storage space of the mobile device is scanned.

It should be noted that, in the embodiment of the present invention, there is no limitation on how to start scanning, and there is no limitation on a preset time condition, and a user may arbitrarily set a mode of starting scanning, and may also arbitrarily set a time condition.

The first judging module 200 is configured to judge whether the first type of feature information of the target file is the same as the first type of feature information of the cleanable file according to a preset cleanable file list;

the preset cleanable file list is a preset list which is judged to be cleanable files, the cleanable file list comprises characteristic information of all cleanable files, each cleanable file can further comprise user cleaning times, and the user cleaning times can be obtained by counting user identifications carried by the cleanable files.

A second determining module 300, configured to determine whether a similarity between the second type of feature information of the target file and the second type of feature information of the cleanable file exceeds a preset similarity threshold under the condition that the first type of feature information of the target file is the same as the first type of feature information of the cleanable file;

specifically, the first type of feature information is a path, the second type of feature information is an installation package name, and the second determining module 300 may include: a package name obtaining unit, a similarity calculating unit, a second judging unit and a first determining unit,

a package name obtaining unit, configured to obtain an installation package name of an application program to which the target file belongs and an installation package name of an application program to which the cleanable file belongs, when a path of the target file is the same as a path of the cleanable file;

the similarity calculation unit is used for calculating the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs;

the second judging unit is used for judging whether the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold value or not;

and the first determining unit is used for determining that the similarity between the second type characteristic information of the target file and the second type characteristic information of the cleanable file exceeds a preset similarity threshold under the condition that the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold.

Wherein the second determining unit may include: a segmentation subunit, a first judgment subunit and a first determination subunit,

the segmentation subunit is used for segmenting the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs into a plurality of installation package name segments according to character segments respectively;

a first judging subunit, configured to judge whether an installation package name fragment that is the same as or similar to at least one installation package name fragment of an application program to which the cleanable file belongs exists in multiple installation package name fragments of the application program to which the target file belongs, where the similarity refers to that a similarity between the installation package name fragment of the application program to which the target file belongs and the installation package name fragment of the application program to which the cleanable file belongs exceeds a preset second text similarity threshold;

a first determining subunit, configured to determine that, when an installation package name fragment that is the same as or similar to at least one installation package name fragment of the application program to which the cleanable file belongs does not exist in the plurality of installation package name fragments of the application program to which the target file belongs, a similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold.

Optionally, the second determining unit may further include: a first acquisition subunit, a second judgment subunit and a second determination subunit,

a first obtaining subunit, configured to, in a case where an installation package name fragment that is the same as or similar to at least one installation package name fragment of an application program to which the cleanable file belongs does not exist in a plurality of installation package name fragments of the application program to which the target file belongs, obtain classification information of an installation package name of the application program to which the target file belongs;

a second obtaining subunit, configured to obtain, when an installation package name fragment that is the same as or similar to at least one installation package name fragment of the application program to which the cleanable file belongs does not exist in the plurality of installation package name fragments of the application program to which the target file belongs, classification information of an installation package name of the application program to which the cleanable file belongs;

a second judging subunit, configured to judge whether the classification information of the installation package name of the application program to which the target file belongs, acquired by the first acquiring subunit, is consistent with the classification information of the installation package name of the application program to which the cleanable file belongs, acquired by the second acquiring subunit;

and the second determining subunit is configured to determine that, when the determination result of the second determining subunit is yes, the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold.

A determining module 400, configured to determine whether the target file is a file to be cleaned according to the determination result of the second determining module 300.

The determining module 400 may include:

a third determining unit, configured to determine whether the user cleaning frequency of the cleanable file exceeds a preset value according to a preset cleanable file list if the determination result of the second determining module 300 is yes;

and the second determining unit is used for determining the target file as the file to be cleaned under the condition that the user cleaning times of the cleanable file exceeds a preset value.

The device for determining the file to be cleaned provided by the embodiment of the invention is used for scanning the storage space and extracting the first type characteristic information and the second type characteristic information of the target file; judging whether the first type characteristic information of the target file is the same as the first type characteristic information of the cleanable file or not; under the condition that the first type of feature information of the target file is the same as the first type of feature information of the cleanable file, judging whether the similarity between the second type of feature information of the target file and the second type of feature information of the cleanable file exceeds a preset similarity threshold value or not; and determining whether the target file is the file to be cleaned or not according to the judgment result. According to the technical scheme provided by the embodiment of the invention, the files to be cleaned can be determined by the first class of feature information being the same and the similarity of the second class of feature information meeting the preset similarity threshold, so that the matching standard between the target file and the cleanable file is reduced. Therefore, when part of characteristic information of the cleanable file slightly changes, the file can be determined as the file to be cleaned under the condition that the quantity of the characteristic information of the cleanable file in the cleanable file list is not increased, no extra storage space is occupied, and the operation burden on a system caused by the comparison process is small.

On the basis of the apparatus shown in fig. 6, another apparatus for determining a file to be cleaned according to an embodiment of the present invention may further include: a display module, a receiving module and a cleaning module,

the display module is used for displaying files to be cleaned;

in the embodiment of the invention, after the file to be cleaned is determined, the file to be cleaned is displayed on the display interface of the mobile equipment.

It should be noted that after the file to be cleaned is determined, the file to be cleaned may be cleaned directly, but in order to enable a user to know the file to be cleaned more clearly, in the embodiment of the present invention, the file to be cleaned may be displayed on the display interface of the mobile device, and the user may clearly see the file to be cleaned, so as to prevent erroneous cleaning.

The receiving module is used for receiving the operation of cleaning the file to be cleaned displayed by the display module;

specifically, a control for receiving a user to execute a cleaning operation is provided on a displayed interface of the file to be cleaned, and the cleaning operation is executed by receiving a click of the user on the control.

It should be noted that a control for one-touch cleaning may be provided on the display interface, and a selectable control may be provided beside each cleanable file, so that the user may select a file to be cleaned that needs to be cleaned.

And the cleaning module is used for cleaning the file to be cleaned according to the cleaning operation executed by the user and received by the receiving module.

According to the embodiment of the invention, the files to be cleaned are displayed, and the files to be cleaned are cleaned after the cleaning operation executed by the user is received, so that the user can know the files to be cleaned more clearly, and the mistaken cleaning is prevented.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

Those skilled in the art will appreciate that all or part of the steps in the above method embodiments may be implemented by a program to instruct relevant hardware to perform the steps, and the program may be stored in a computer-readable storage medium, which is referred to herein as a storage medium, such as: ROM/RAM, magnetic disk, optical disk, etc.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims (14)

1. A method for determining a file to be cleaned is characterized by comprising the following steps:

scanning the storage space, and extracting first type characteristic information and second type characteristic information of the target file;

judging whether the first type feature information of the target file is the same as the first type feature information of the cleanable file or not according to a preset cleanable file list;

under the condition that the first type feature information of the target file is the same as the first type feature information of the cleanable file, judging whether the similarity between the second type feature information of the target file and the second type feature information of the cleanable file exceeds a preset similarity threshold value or not;

and determining whether the target file is a file to be cleaned or not according to the judgment result.

2. The method of claim 1, wherein the scanning the storage space to extract the first class feature information and the second class feature information of the target file comprises:

receiving a scanning starting instruction of a user;

scanning the storage space according to the scanning starting instruction, and extracting first type characteristic information and second type characteristic information of the target file;

or,

judging whether a preset time condition is met or not;

and under the condition of meeting a preset time condition, scanning the storage space, and extracting the first type characteristic information and the second type characteristic information of the target file.

3. The method of claim 2, wherein the determining whether the preset time condition is met comprises:

judging whether the current moment reaches a preset scanning time point or not; or,

and judging whether the time length passed after the last scanning reaches a preset time length threshold value.

4. The method according to claim 1, wherein the first type of feature information is a path, the second type of feature information is an installation package name, and the determining whether the similarity between the second type of feature information of the target file and the second type of feature information of the cleanable file exceeds a preset similarity threshold when the first type of feature information of the target file is the same as the first type of feature information of the cleanable file comprises:

under the condition that the path of the target file is the same as the path of the cleanable file, acquiring the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs;

calculating the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs;

judging whether the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold value or not;

and under the condition that the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold, determining that the similarity between the second type characteristic information of the target file and the second type characteristic information of the cleanable file exceeds a preset similarity threshold.

5. The method according to claim 4, wherein the determining whether the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold value comprises:

the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs are respectively segmented into a plurality of installation package name segments according to character segments;

judging whether an installation package name fragment which is the same as or similar to at least one installation package name fragment of the application program to which the cleanable file belongs exists in a plurality of installation package name fragments of the application program to which the target file belongs, wherein the similarity refers to the similarity that the similarity of the installation package name fragment of the application program to which the target file belongs and the installation package name fragment of the application program to which the cleanable file belongs exceeds a preset second text similarity threshold value;

and if so, determining that the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold.

6. The method according to claim 5, wherein the determining whether the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold further comprises:

acquiring classification information of installation package names of the application programs to which the target files belong under the condition that installation package name fragments which are the same as or similar to at least one installation package name fragment of the application programs to which the cleanable files belong do not exist in the installation package name fragments of the application programs to which the target files belong;

acquiring classification information of installation package names of application programs to which cleanable files belong;

judging whether the classification information of the installation package name of the application program to which the target file belongs is consistent with the classification information of the installation package name of the application program to which the cleanable file belongs;

and under the condition that the classification information of the installation package name of the application program to which the target file belongs is consistent with the classification information of the installation package name of the application program to which the cleanable file belongs, determining that the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold.

7. The method according to claim 1, wherein the determining whether the target file is a file to be cleaned according to the determination result comprises:

under the condition that the similarity between the second type of feature information of the target file and the second type of feature information of the cleanable file exceeds a preset similarity threshold, judging whether the user cleaning frequency of the cleanable file exceeds a preset value or not according to a preset cleanable file list;

and determining the target file as a file to be cleaned under the condition that the user cleaning times of the cleanable file exceed a preset value.

8. A to-be-cleaned-document determining apparatus, comprising:

the extraction module is used for scanning the storage space and extracting the first type characteristic information and the second type characteristic information of the target file;

the first judging module is used for judging whether the first type of feature information of the target file is the same as the first type of feature information of the cleanable file or not according to a preset cleanable file list;

the second judging module is used for judging whether the similarity between the second type characteristic information of the target file and the second type characteristic information of the cleanable file exceeds a preset similarity threshold value or not under the condition that the first type characteristic information of the target file is the same as the first type characteristic information of the cleanable file;

and the determining module is used for determining whether the target file is a file to be cleaned according to the judgment result of the second judging module.

9. The apparatus of claim 8, wherein the extraction module comprises:

a receiving unit for receiving a scanning start instruction of a user;

the first extraction unit is used for scanning the storage space according to the scanning starting instruction received by the receiving unit and extracting the first type characteristic information and the second type characteristic information of the target file;

the first judgment unit is used for judging whether a preset time condition is met or not;

and the second extraction unit is used for scanning the storage space and extracting the first type characteristic information and the second type characteristic information of the target file under the condition that the judgment unit judges that the preset time condition is met.

10. The apparatus according to claim 9, wherein the first determining unit is specifically configured to:

judging whether the current moment reaches a preset scanning time point or not; or,

and judging whether the time length passed after the last scanning reaches a preset time length threshold value.

11. The apparatus of claim 8, wherein the first type of feature information is a path, the second type of feature information is an installation package name, and the second determining module comprises:

a package name obtaining unit, configured to obtain an installation package name of an application program to which the target file belongs and an installation package name of an application program to which the cleanable file belongs, when a path of the target file is the same as a path of the cleanable file;

the similarity calculation unit is used for calculating the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs;

the second judging unit is used for judging whether the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold value or not;

and the first determining unit is used for determining that the similarity between the second type characteristic information of the target file and the second type characteristic information of the cleanable file exceeds a preset similarity threshold under the condition that the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold.

12. The apparatus of claim 11, wherein the second determining unit comprises:

the segmentation subunit is used for segmenting the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs into a plurality of installation package name segments according to character segments respectively;

a first judging subunit, configured to judge whether an installation package name fragment that is the same as or similar to at least one installation package name fragment of an application program to which the cleanable file belongs exists in multiple installation package name fragments of the application program to which the target file belongs, where the similarity refers to that a similarity between the installation package name fragment of the application program to which the target file belongs and the installation package name fragment of the application program to which the cleanable file belongs exceeds a preset second text similarity threshold;

a first determining subunit, configured to determine that, when an installation package name fragment that is the same as or similar to at least one installation package name fragment of the application program to which the cleanable file belongs does not exist in the plurality of installation package name fragments of the application program to which the target file belongs, a similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold.

13. The apparatus according to claim 12, wherein the second determining unit further comprises:

a first obtaining subunit, configured to, in a case where an installation package name fragment that is the same as or similar to at least one installation package name fragment of an application program to which the cleanable file belongs does not exist in a plurality of installation package name fragments of the application program to which the target file belongs, obtain classification information of an installation package name of the application program to which the target file belongs;

a second obtaining subunit, configured to obtain, when an installation package name fragment that is the same as or similar to at least one installation package name fragment of the application program to which the cleanable file belongs does not exist in the plurality of installation package name fragments of the application program to which the target file belongs, classification information of an installation package name of the application program to which the cleanable file belongs;

a second judging subunit, configured to judge whether the classification information of the installation package name of the application program to which the target file belongs, acquired by the first acquiring subunit, is consistent with the classification information of the installation package name of the application program to which the cleanable file belongs, acquired by the second acquiring subunit;

and the second determining subunit is configured to determine that, when the determination result of the second determining subunit is yes, the similarity between the installation package name of the application program to which the target file belongs and the installation package name of the application program to which the cleanable file belongs exceeds a preset first text similarity threshold.

14. The apparatus of claim 8, wherein the determining module comprises:

a third judging unit, configured to, when the second judging module judges that the second file is a file, judge whether the user cleaning frequency of the cleanable file exceeds a preset value according to a preset cleanable file list;

and the second determining unit is used for determining the target file as the file to be cleaned under the condition that the user cleaning times of the cleanable file exceeds a preset value.