WO2012167742A1

WO2012167742A1 - Method and apparatus for accessing resource files

Info

Publication number: WO2012167742A1
Application number: PCT/CN2012/076648
Authority: WO
Inventors: 郑昕; 孙健
Original assignee: 华为技术有限公司
Priority date: 2011-07-27
Filing date: 2012-06-08
Publication date: 2012-12-13
Also published as: CN102902687B; CN102902687A

Abstract

Provided are a method and apparatus for accessing resource files. The method comprises: acquiring a file name of a resource file to be accessed and reading an index area and a file name area of a resource package file according to the file name of the resource file to be accessed, the resource package file comprising an index area, a file name area and a file content area; acquiring from the file name area a storage path of the resource file to be accessed in the file content area ; acquiring from the index area offset information about the resource file to be accessed; and acquiring content of the resource file to be accessed in the file content area according to the storage path and the offset information. The apparatus comprises: a reading module and a processor.

Description

Access method of resource file 5 ^ This application is submitted to the Chinese Patent Office on July 27, 2011, and the application number is 201110211991.4. The priority of the Chinese patent application entitled "Access method and device for resource files", all of which The content is incorporated herein by reference. Technical field

The embodiments of the present invention relate to the field of mobile terminal technologies, and in particular, to a resource file access method and device. Background technique

With the gradual promotion of 3G (3 ^rd Generation) networks, mobile terminals (such as mobile phones) are becoming more and more powerful, such as MMS, multimedia, web browsing, video telephony, electronic maps and so on. These functions can be implemented by running the corresponding functional modules (ie applications) on the mobile terminal. The application program can be installed on the mobile terminal by: the mobile terminal obtains the installation package of the application by wired or wireless manner, runs the installation package of the application on the mobile terminal, and installs each file in the package. (such as picture/sound files, etc.) Created on the memory of the mobile terminal.

In order to be able to use the new program on the phone, it is generally necessary to install a program installation package for the phone. Users currently generally install the program installation package by copying from the computer/direct mobile phone network download. For example, to install the application application.exe to the mobile phone, first obtain the installation package shown in Figure la. This installation package is a separate file. After installing this file on the mobile phone, as shown in Figure lb. The schematic diagram of the decompression of the installation package. These files include a running file of application.exe and several resource files. Then, when the application is running the application, the mobile phone can access one or more of the above multiple resource files. In the corresponding application running process, you need to separately access the above creation to Each resource file of the mobile terminal performs a large number of file opening/closing operations, affecting the running speed of the application, and consuming the power of the mobile terminal. Summary of the invention

The embodiment of the invention provides a method and a device for accessing a resource file, which are used to solve the technical problems existing in the prior art.

An embodiment of the present invention provides a method for accessing a resource file, including:

Obtaining a file name of the resource file to be accessed, and reading an index area and a file name area of the resource package file according to the file name of the resource file to be accessed, where the resource package file includes an index area, a file name area, and a file content. Area;

And obtaining, according to the storage path and the offset information, the content of the resource file to be accessed in the file content area.

The embodiment of the invention further provides a resource file accessing device, including:

a reading module, configured to obtain a file name of the resource file to be accessed, and read an index area and a file name area of the resource package file according to the file name of the resource file to be accessed, where the resource package file includes an index area, a file name area and a file content area; a storage path of the storage area, obtained offset information of the resource file to be accessed from the index area; according to the storage path and the offset information, in the file The content area obtains the content of the resource file to be accessed.

The method and device for accessing a resource file according to an embodiment of the present invention, by making all the resource files into one resource package file, the resource package file is divided into an index area, a file name area, and a file content area, and the reading is stored in the file content area. Path, obtaining offset information of the resource file to be accessed from the index area, A large number of file opening/closing operations are saved, which improves the running speed of the mobile terminal and saves power consumption of the mobile terminal. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below, and obviously, the attached in the following description The drawings are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Figure la is a schematic view of an installation package provided in the prior art;

Figure lb is a schematic diagram of the composition of the installation package in Figure la after decompression;

2 is a flowchart of a method for accessing a resource file according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for accessing a resource file according to another embodiment of the present invention; FIG. 4 is a flowchart of a method for accessing a resource file according to another embodiment of the present invention; FIG. 5 is a resource file according to an embodiment of the present invention; FIG. 6 is a schematic structural diagram of a device for accessing a resource file according to another embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 2 is a flowchart of a method for accessing a resource file according to an embodiment of the present invention. As shown in FIG. 2, the method includes:

Step 201: Obtain a file name of the resource file to be accessed, according to the obtained resource to be accessed. The file name of the file reads the index area and the file name area of the resource package file, and the resource package file includes: an index area, a file name area, and a file content area.

The resource file that the program needs to access during operation can be referred to as the resource file to be accessed, and the program accesses the resource file according to the file name of the resource file to be accessed.

The resource file included in the program installation package in the prior art is a piece of a resource file. The resource package file provided by the embodiment of the present invention is a binary file, and the binary file includes an index area for recording resource files. The type, the offset of the file name of the resource file, the length of the resource file name, the offset of the file content of the resource file in the resource bundle file, and the length of the file content of the resource file. The index area is used to save offset information of all resource files in the resource package file, and may include multiple index structures. The binary file also includes a file name area for recording the file name of the resource file and a storage path of the resource file in the resource package file, and the file name area may include multiple file name structures. The binary file also includes a file content area for recording the file content of the resource file, and the file content of each resource file is represented by a binary, which includes a plurality of file content structures.

For the storage path of the resource file in the resource package file, it should be noted that the storage path is actually a relative path, and the relative path can be understood as a path for obtaining a resource file from the root directory of the resource file, and the path refers to It is not the disk or sector of the resource file stored on the mobile phone, but the path to the resource file from the root directory of the resource file in the resource package file, so it is a relative path.

Step 202: Obtain a storage path of the resource file to be accessed in the file content area from the file name area, obtain offset information of the resource file to be accessed from the index area, and obtain offset information according to the storage path and the offset. Refers to: When a storage path of a resource file in a resource package file is obtained, the resource file may not start from the first bit of data, but there is an offset, and only the offset is obtained. , in order to access the resource file from the beginning of the resource file.

Based on the foregoing implementation manner, the resource package file may further include: a file header area, The size of the index area, file name area, and file content area, and the respective offsets in the resource bundle file are recorded. Correspondingly, before step 201, the method may further include: accessing a file header area of the resource package file, and obtaining a size and an offset of the index area, the file name area, and the file content area. Further, the file header area may also be used to record at least one: a length of a file header of the resource package file, a version of the resource package file, a size of the resource package file, and a total number of resource files in the resource package file.

The flowchart of the access method of the resource file provided by the embodiment of the present invention, as shown in FIG. 3, is provided by the embodiment of the present invention, in order to speed up the storage path and the offset information of the resource file. Methods can include:

Step 300: Read the content recorded in the index area and the file name area in the resource package file, and establish an index table of the resource file according to the content recorded in the read index area and the file name area, where the index table includes the resource. The name, size, offset, and storage path of the resource file in the package file. The content may include at least an offset of the resource file name recorded in the index area, a length of the resource file name, an offset of the file content of the resource file in the resource package file, and a length of the file content of the resource file, the file name The resource file name and storage path of the zone record.

Step 301: Obtain a file name of the resource file to be accessed, and read the index table according to the obtained file name.

The index table can exist in the form of a Hashmap.

Step 302: Obtain the content of the resource file to be accessed in the file content area according to the storage path and the offset information read in the index table.

In another embodiment of the access method of the resource file of the present invention, the method may further include: maintaining an open state of the resource package file, so that a program of the mobile terminal or the like accesses the resource package file. This step preferably occurs after the resource bundle file has been accessed once.

FIG. 4 is a flowchart of a method for accessing a resource file according to another embodiment of the present invention. As shown in FIG. 4, the method uses a mobile phone video program to access a resource file as an example, and the method not only introduces a mobile phone video program client. How to access the resources needed when working on the mobile phone, and further explain how to make a resource package file for mobile video programs, how to make a hand Program installation package for the video program, how to install the mobile video program on the mobile phone, and how to uninstall the mobile video program. The following is a description of the preferred order of occurrence between the various parts described above, but is not intended to limit the scope of the claimed invention. include:

Step 401: Create a resource package file of the mobile video program. Obtaining information of all resource files required for the mobile video program, wherein the information of the resource file includes: a name, a size, and a content of the resource file, where the foregoing information is saved in a local list; and the resource package is constructed according to the obtained information of the resource file. The file header area structure, index area structure, file name area structure, and file content area structure of the file; package the constructed file into a single binary file. The constructed binary file may include structural information such as a file header area structure, an index area structure, a file name area structure, and a file content area structure.

Specifically, the build resource package file may include but is not limited to the following structural information:

1.1) File format:

I file header area, save the general information of the resource package file, the number of internal resource files, etc. I index area, save the offset information of all resource files, including multiple index structure I file name area, save all resource files File name and storage path, including multiple file name structures

I file content area, which stores the binary content of all resource files, including multiple file contents.

1.2) File header area structure:

Typedef struct ulong m_iHeaderLen; //the length of the file header

Ulong m_i Version; 〃 resource pack version

Ulong m_iResFileLen 总 total size of the resource bundle Ulong m_iFsObjCount; / / total number of resources in the resource bundle ulong m_iIndexSecOffset; / / index area offset in the entire resource bundle

Ulong m_iIndexSecLen; 〃 index area size

Ulong m_iNameSecOffset; 偏移 The offset of the file name area in the resource bundle ulong m_iNameSecLen; //The size of the file name area

Ulong m_iDataSecOffset; 偏移 offset of the content area of the resource file ulong m_iDataSecLen; / / size of the file content area

} T_ResFileHeader;

1.3) Index area structure:

Typedef struct ulong m_ JFsoType; 〃 resource file type

Ulong m_ — sFsoNameOffset; 偏移 offset of the file name of the resource file ulong m_ JFsoNameLen; 长度 length of the file name

Ulong m_iFsoDataOffset; / / file content offset ulong m_ JFsoDataLen; / / file content length

} T_ResFileIndex;

1.4) File name area structure:

Typedef struct uchar m_sFsoNameBuff [N]; 〃 filename

} T_ResFileNameSec; 1.5) File content area structure:

Typedef struct uchar m_sFsoDataBuff [N]; 〃 file content

}T_ResFileDataSec;

Step 402: Create a mobile video program installation package.

The single binary resource package file created in step 401 is included in the program installation package, and the single binary resource package file to be produced and the program execution file (such as the file with the suffix exe) are made into a program installation package, which is reduced. The difficulty of making an installation package, and reducing the disk space occupied by the program after it is installed on the phone.

Step 403: Install the mobile video program on the mobile phone.

The installation process may include: loading a single binary resource package file and a program execution file in the program installation package to a specified location on the mobile phone, since only one resource package file, rather than multiple resource files, avoids repeated readings The operation of the program installation package greatly improves the program installation speed. In general, with this single binary resource package file, the client installation speed can be increased by 10 to 20 times.

Step 404: The mobile video program starts, and the resource package file is indexed.

Specifically, when the execution file of the mobile video program starts running, the file header area of the resource package file is read, and the size of the index area, the file name area, and the file content area are obtained from the file header area of the resource package file, and the resource is in the resource. The offset within the package file. According to the size and offset of the index area and the file name area, the information content in the index area is read, and the type of each resource file included in the resource package file, the offset of the resource file name, and the length of the resource file name are obtained. The offset of the file content of the resource file in the resource package file and the length of the file content of the resource file, and the storage path of the file in the resource package file in the file name area, thereby establishing an index table of the resource file, The index table contains at least the name, size, offset, and storage path of the resource file, and hashes the index table The way the table is saved for subsequent quick indexing. Keep the resource bundle file open to effectively reduce the number of times the resource bundle file is opened and closed.

Step 405: The mobile video program runs to retrieve the resource file.

Specifically, the mobile video program can retrieve the index table of the resource file established in step 404 according to the required resource file name, and find the storage path and offset position of the corresponding resource file in the resource package file, to the corresponding path. Read the required resource file at the corresponding offset location. Through the above method, the small files that are fragmented and opened are effectively avoided, the running speed of the program is improved, and the performance consumption of the mobile phone is reduced.

Step 406: Uninstall the mobile video program.

When the mobile phone video program is uninstalled, the resource package files installed to the mobile phone are all physically deleted, because the resource package file provided in the embodiment of the present invention exists in the form of a single binary file, thereby avoiding repeated deletion operations, which greatly improves the The speed at which the program is uninstalled.

The access method of the resource file provided by the embodiment of the present invention, by making all the resource files into one resource package file, the resource package file is divided into an index area, a file name area, and a file content area, and the storage path in the file content area is read. Obtaining the offset information of the resource file to be accessed from the index area, obtaining the content of the resource file to be accessed in the file content area according to the storage path and the offset information, thereby avoiding a large number of file opening/closing operations, and improving The running speed of the mobile terminal saves the power loss of the mobile terminal.

FIG. 5 is a schematic structural diagram of a device for accessing a resource file according to an embodiment of the present invention. As shown in FIG. 5, the device for accessing a resource file is used to implement the foregoing method, and the device for accessing the resource file includes: Module 501 and processor 502 are taken. The reading module 501 is configured to: obtain a file name of the resource file to be accessed, and read an index area and a file name area of the resource package file according to the file name of the resource file to be accessed, where the resource package file includes an index area, The storage path of the file name area and the file, and the offset information of the resource file to be accessed is obtained from the index area, according to the storage path The resource package file provided by the embodiment of the present invention is a binary file, and the binary file includes an index area for recording the type of the resource file, the offset of the file name of the resource file, the length of the resource file name, and the resource. The offset of the file's file content in the resource bundle file, and the length of the file content of the resource file. The index area is used to save offset information of all resource files in the resource package file, and may include multiple index structures. The binary file further includes a file name area for recording the file name of the resource file and a storage path of the resource file in the resource package file, and the file name area may include multiple file name structures. The binary file also includes a file content area for recording the file content of the resource file, and the file content of each resource file is represented by a binary, which includes a plurality of file content structures. For the storage path of the resource file in the resource package file, it should be noted that the storage path is actually a relative path, and the relative path can be understood as a path for obtaining a resource file from the root directory of the resource file, and the path refers to It is not the disk or sector of the resource file stored on the mobile phone, but the path to the resource file in the resource package file. The path to the resource file is obtained, so it is a relative path.

In another embodiment of the present invention, the resource package file may further include: a file header area for recording the size of the index area, the file name area, and the file content area, and an offset within the resource package file. Correspondingly, the reading module 501 is further configured to: before reading the index area and the file name area of the resource package file according to the file name of the resource file to be accessed, accessing the file header area of the resource package file to obtain the index area and the file The size of the namespace and file content area and the offset in the resource bundle file.

FIG. 6 is a schematic structural diagram of a device for accessing a resource file according to another embodiment of the present invention. As shown in FIG. 6, the access device of the resource file includes not only the reading module 601 but also processing. The 602, further includes: an establishing module 600, configured to read, before the reading module 601 obtains the file name of the resource file to be accessed, the content recorded in the index area and the file name area in the resource package file; The contents of the index area and the file name area record, and an index table of the resource file is created, and the index table includes the name, size, offset, and storage path of the resource file. The content may include at least an offset of the resource file name recorded in the index area, a length of the resource file name, and The offset of the file content of the resource file in the resource bundle file, and the length of the file content of the resource file, the resource file name and storage path of the file name area record. Correspondingly, the reading module 601 is configured to: obtain a file name of the resource file to be accessed, and read an index table established by the establishing module 600 according to the obtained file name. The processor 602 is configured to obtain the content of the resource file to be accessed in the file content area according to the storage path and the offset information read in the index table.

The access device for the resource file provided by the embodiment of the present invention, by making all the resource files into one resource package file, the resource package file is divided into an index area, a file name area, and a file content area, and the storage path in the file content area is read. Obtaining the offset information of the resource file to be accessed from the index area, obtaining the content of the resource file to be accessed in the file content area according to the storage path and the offset information, thereby avoiding a large number of file opening/closing operations, and improving The running speed of the mobile terminal saves the power loss of the mobile terminal.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

A method for accessing a resource file, comprising:

a path, obtaining offset information of the resource file to be accessed from the index area;

2. The method according to claim 1, wherein the resource package file further comprises: a file header area, configured to record a size of the index area, a file name area, and a file content area, and The offset within the resource bundle file;

Before the reading the index area and the file name area of the resource package file, the method further includes: accessing a file header area of the resource package file, obtaining a size of the index area, the file name area, and the file content area The offset in the resource bundle file.

The method according to claim 2, wherein the file header area is further configured to record at least one: a length of a file header, a version of the resource package file, a size of the resource package file, and The total number of resource files in the resource bundle file.

4. A method according to any one of claims 1 to 3, characterized in that:

The index area is used to record the type of each resource file, the offset of the resource file name, the length of the resource file name, the offset of the file content of the resource file in the resource package file, and the file content of the resource file. length;

The file name area is used to record each resource file name and storage path;

The file content area is used to record the file content of each resource file.

The method according to claim 4, wherein the obtaining the resource text to be accessed Before the file name of the piece, the method further includes:

Reading an index area of the resource package file and a content recorded in the file name area;

Establishing an index table of the resource file according to the content of the index area read by the resource package file and the file name area, where the index table includes a name, a size, an offset, and a storage path of the resource file;

The reading the index area and the file name area of the resource package file according to the file name of the resource file to be accessed includes:

And reading the index table according to the obtained file name of the resource file to be accessed.

6. The method according to claim 5, wherein the index table exists in the form of a hash table.

The method according to claim 1 or 2, wherein the method further comprises: maintaining an open state of the resource package file.

8. A device for accessing a resource file, comprising:

a reading module, configured to obtain a file name of the resource file to be accessed, and read an index area and a file name area of the resource package file according to the file name of the resource file to be accessed, where the resource package file includes an index area, a storage path of the file name area and the file content area; obtaining offset information of the resource file to be accessed from the index area; according to the storage path and the offset information, in the file content area Obtaining the content of the resource file to be accessed.

The apparatus according to claim 8, wherein the resource package file further comprises: a file header area, configured to record a size of the index area, a file name area, and a file content area, and The offset within the resource bundle file;

The reading module is further configured to: before reading an index area and a file name area of the resource package file according to the file name of the resource file to be accessed, accessing a file header area of the resource package file to obtain an index area , the size of the file name area and the file content area, and the offset in the resource bundle file.

The device according to claim 8 or 9, wherein the device further comprises: an establishing module, configured to read the resource before the reading module obtains a file name of the resource file to be accessed An index area in the package file and the content recorded in the file name area; establishing an index table of the resource file according to the content recorded in the index area and the file name area read in the resource package file, the index table Include the name, size, offset, and storage path of the resource file;

The reading module is configured to: obtain a file name of the resource file to be accessed, and read the index table according to the obtained file name of the resource file to be accessed.