CN115269511A - Generic electronic file packaging method and device - Google Patents
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- 238000013500 data storage Methods 0.000 claims abstract description 25
- 238000005538 encapsulation Methods 0.000 claims abstract description 6
- 230000015654 memory Effects 0.000 claims description 18
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- 238000007726 management method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
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- G06F16/10—File systems; File servers
- G06F16/16—File or folder operations, e.g. details of user interfaces specifically adapted to file systems
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- G06F16/10—File systems; File servers
- G06F16/17—Details of further file system functions
- G06F16/172—Caching, prefetching or hoarding of files
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
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Abstract
The invention provides a generic electronic file packaging method and a generic electronic file packaging device, wherein the method comprises the following steps: creating a null electronic file, and initializing an index area, a list data area and a file data storage area; acquiring a plurality of electronic files, and writing file data of the electronic files into a file data storage area; establishing a file data list for each electronic file according to the storage position of the file data of each electronic file, and writing the file data list into a list data area; establishing a list index of each electronic file according to the storage position of the file data list of each electronic file, and writing the list index into a list index area; establishing an index according to the storage position of the list index of each electronic file, and writing the index into an index area; and writing a file header in the empty electronic file to complete the encapsulation of each electronic file to form an encapsulated file. According to the invention, a group of scattered electronic files are packaged into one electronic file, and the design of adding a list into the index part can realize quick reading, so that the network utilization efficiency is improved.
Description
Technical Field
The invention relates to the technical field of file management, in particular to a generic electronic file packaging method and device.
Background
At present, electronic files managed by various file management systems in the file industry mainly relate to several types of graphics images, documents, audio, video and the like, and in practical application, all files generated by one event (such as one meeting, one access and the like) are generally required to be organized together, so that the management and the utilization are convenient. The main management modes comprise three modes, namely a folder mode, a compressed package mode and a database mode, wherein the folder mode is to store electronic files in a mode of sequence, classification, time sequence, type and the like; the mode of compressing the package is to store the electronic file in a compressed package file (such as zip, rar, and the like); the way of the database is to store the electronic files in the database. The file management system is mainly implemented by using AdobeFlashPlayer and Html5, a BS framework is adopted, and the various electronic files are checked through browsers such as Google and IE by combining the three electronic file management modes of the folder, the compressed package and the database. The folders, the compressed packages and the databases can realize the organization management and the utilization of the electronic files. However, the method has defects in migration, backup, restoration, resource optimization, large file utilization (such as electronic file browsing, printing and the like), metadata acquisition, thumbnail acquisition, large picture zooming and the like.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect of low efficiency in subsequent utilization of electronic files in the method for organizing multiple electronic files in the prior art, thereby providing a generic electronic file packaging method and device.
The invention provides a generic electronic file packaging method in a first aspect, which comprises the following steps: creating an empty electronic file, and initializing an index area, a list data area and a file data storage area in the empty electronic file; acquiring a plurality of electronic files, and writing file data of each electronic file into a file data storage area; establishing a file data list for each electronic file according to the storage position of the file data of each electronic file, and writing the file data list into a list data area, wherein the file data list is used for storing the file attribute of the corresponding electronic file and the storage position of the file data; establishing a list index of each electronic file according to the storage position of the file data list of each electronic file, and writing the list index into a list index area; establishing an index according to the storage position of the list index of each electronic file, and writing the index into an index area; and writing a file header in the empty electronic file to complete the packaging of each electronic file to form a packaged file.
Optionally, in the generic electronic file encapsulation method provided by the present invention, if the electronic file includes a graphic image file, the method further includes: initializing a slice list area and a slice list index area; generating slice data according to the graphic image file, and writing the slice data into a data storage area; generating a slice list of each graphic image file by combining the storage position of the slice data and the slice data information, and writing the slice list into a slice list area; and generating a list index according to the storage position of the slice list of each graphic image file, and writing the list index into the list index area.
Optionally, in the generic electronic file packaging method provided by the present invention, further comprising: initializing a cover image storage area; writing the envelope data of the audio electronic file and/or the video electronic file into a data storage area; and writing the storage position of the cover data into the cover image storage area.
Optionally, in the generic electronic file packaging method provided by the present invention, further comprising: initializing a description storage area; and writing the description information of the audio electronic file and/or the video electronic file into the description storage area.
Optionally, in the generic electronic file packaging method provided by the present invention, further comprising: initializing a thumbnail storage area; and writing the thumbnail data information of the image electronic file and/or the document electronic file into the thumbnail storage area.
Optionally, in the generic electronic file packaging method provided by the present invention, further comprising: initializing a merged graph memory area; and writing the preview image data information of the video electronic file at each time point into the merged image storage area.
Optionally, in the generic electronic file packaging method provided by the present invention, further comprising: and establishing a file extension for the new blank electronic file, and if the resources occupying space in the electronic file larger than a preset value are stored in the file extension, taking the file extension as an independent attached file of the packaged file.
The second aspect of the present invention provides a generic electronic file packaging apparatus, comprising: the initialization module is used for creating a null electronic file and initializing an index area, a list data area and a file data storage area in the null electronic file; the data storage module is used for acquiring a plurality of electronic files and writing the file data of each electronic file into a file data storage area; the list data area construction module is used for establishing a file data list for each electronic file according to the storage position of the file data of each electronic file, writing the file data list into the list data area, and the file data list is used for storing the file attribute of the corresponding electronic file and the storage position of the file data; the list index area building module is used for building the list index of each electronic file according to the storage position of the file data list of each electronic file and writing the list index into the list index area; the index area building module is used for building an index according to the storage position of the list index of each electronic file and writing the index into the index area; and the file header generating module is used for writing a file header into the empty electronic file to complete the packaging of each electronic file and form a packaged file.
A third aspect of the present invention provides a computer apparatus comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executable by the at least one processor to perform the method of generic electronic file encapsulation as provided in the first aspect of the invention.
A fourth aspect of the present invention provides a computer-readable storage medium storing computer instructions for causing a computer to execute the method for packaging a generic electronic file as provided in the first aspect of the present invention.
The technical scheme of the invention has the following advantages:
the generic electronic file packaging method provided by the invention can package a group of scattered electronic files into one electronic file, so that backup, migration and restoration are convenient, the generation of disk fragments can be reduced by organizing a plurality of electronic files through a single electronic file, the traditional storage structure for indexing corresponding data is not adopted in the file body part, the layering is carried out, the design of a list is added in the indexing part, the rapid reading can be realized, and the network utilization efficiency is improved.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flowchart of a specific example of a generic electronic file packaging method according to an embodiment of the present invention;
FIG. 2 is a diagram of a hierarchical structure of a file type dictionary in an embodiment of the present invention;
FIG. 3 is a diagram illustrating a first-level classification of a document type dictionary according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating a second-level classification of a document type dictionary according to an embodiment of the present invention;
FIG. 5 is a logical structure of hierarchical organization of data information of a generic electronic document according to an embodiment of the present invention;
FIG. 6 is a schematic block diagram of a specific example of a generic electronic file packaging apparatus in an embodiment of the present invention;
FIG. 7 is a functional block diagram of a specific example of a computer device in an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the technical features related to the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
The embodiment of the invention provides a generic electronic file packaging method, as shown in fig. 1, comprising the following steps:
step S11: and (4) newly building an empty electronic file, and initializing an index area, a list data area and a file data storage area in the empty electronic file.
Step S12: and acquiring a plurality of electronic files, and writing the file data of each electronic file into a file data storage area.
In an alternative embodiment, the electronic files may be multiple electronic files of the same type or multiple electronic files of different types, and the electronic files may be graphic image type electronic files, audio type files, video type files, document type files, and the like.
Step S13: and establishing a file data list for each electronic file according to the storage position of the file data of each electronic file, and writing the file data list into a list data area, wherein the file data list is used for storing the file attribute of the corresponding electronic file and the storage position of the file data.
Step S14: and establishing a list index of each electronic file according to the storage position of the file data list of each electronic file, and writing the list index into a list index area.
In an alternative embodiment, the content stored in the list index area is different according to the file type, and the list data storage locations corresponding to files with different grades (such as graphic images), different sizes (such as video), different qualities (such as audio) and the like are mainly stored.
Step S15: and establishing an index according to the storage position of the list index of each electronic file, and writing the index into the index area.
In an alternative embodiment, the index area stores storage offset locations of manifest indexes corresponding to each electronic file to be packaged, each index occupying 8 bytes.
Step S16: and writing a file header in the empty electronic file to complete the packaging of each electronic file to form a packaged file.
In the embodiment of the invention, the information contained in the file header is not the description (such as name, author, time, etc.) of the content of a certain electronic file, but is various types of customized information required by the generic electronic file packaging method.
The generic electronic file packaging method provided by the embodiment of the invention can package a group of scattered electronic files into one electronic file, is convenient for backup, migration and restoration, can reduce the generation of disk fragments by organizing a plurality of electronic files through a single electronic file, and can realize quick reading and improve the network utilization efficiency by layering the file body part without adopting the traditional storage structure for indexing corresponding data, and adding a list design into the indexing part.
In an alternative embodiment, the header consists of 15 information segments, which mainly includes: the detailed storage structure of the information such as the identifier, the version number, the creation time, the file check value, the key index position and the like is shown as the following table:
in an alternative embodiment, for the file check value, an alternative way (0 for MD5 algorithm and 1 for CRC32 algorithm) is adopted, the first byte stores the algorithm type, and the rest stores the algorithm calculation result.
In an alternative embodiment, the metadata is mainly stored in the form of key/value pairs (such as: name, unique identification, file type, etc. The encoding mode of the file type is formed according to the file classification and file format dependency relationship (for example, FIG. 2 is a file type dictionary hierarchical structure diagram), and the encoding mode is respectively formed by a first layer (for example, a first layer classification diagram of a file type dictionary in FIG. 3) and a second layer (for example, a second layer classification diagram of a file type dictionary in FIG. 4) classification hierarchical structure, for example, JPG of a graphic image class is represented by A01, and codes and names in the file format of the second layer classification are used for subsequent expansion.
In an optional embodiment, the blank electronic file further includes a key storage area, which mainly stores the length of the key and the content of the key, where the key storage location corresponds to the location where the key index in the file header is stored, and the key is used to encrypt and decrypt data.
In an optional embodiment, if the electronic file includes a graphic image class file, the method further includes the following steps:
first, a slice list area and a slice list index area are initialized.
Then, slice data is generated from the graphic image class file, and the slice data is written in the data storage area.
And thirdly, generating a slice list of each graphic image file by combining the storage position of the slice data and the slice data information, and writing the slice list into the slice list area.
In an alternative embodiment, the slice list consists of a slice list length and a size, data storage location, of each slice image.
Then, a list index is generated from the storage position of the slice list of each graphics image class file, and the list index is written in the list index area.
In an optional embodiment, the generic electronic file packaging method provided in the above embodiment further includes:
firstly, initializing a cover image storage area;
then, the envelope data of the audio electronic file and/or the video electronic file is written into a data storage area;
finally, the storage position of the cover data is written into the cover image storage area.
In an alternative embodiment, the front cover image storage area is composed of the number of sheets and the storage position of the front cover image and is mainly used for storing the envelope data of the audio-type and video-type electronic files.
In an optional embodiment, the generic electronic file packaging method provided in the above embodiment further includes:
first, the description memory area is initialized.
Then, description information of the audio-type electronic file, and/or the video-type electronic file is written into the description storage area.
In an optional embodiment, the description storage area stores description length and description data, and is mainly used for storing description information of audio and video electronic files.
In an optional embodiment, the generic electronic file packaging method provided in the above embodiment further includes:
firstly, initializing a thumbnail storage area;
then, the thumbnail data information of the image-class electronic file and/or the document-class electronic file is written into the thumbnail storage area.
In an optional embodiment, the thumbnail storage area stores the number of thumbnails and thumbnail data, and is mainly used for storing thumbnail data information of electronic files such as graphic images and documents.
In an optional embodiment, the generic electronic file packaging method provided in the above embodiment further includes:
first, the merge map memory is initialized.
Then, the preview image data information at each time point of the video-type electronic file is written into the merged image storage area.
In an optional embodiment, the merged image storage area stores the number of merged images and merged image data, and is mainly used for storing preview image data information at each time point of the video electronic file.
The generic electronic file packaging method provided by the above embodiment performs auxiliary expansion on the support of different types of electronic files, wherein the method includes: the method comprises the steps of audio and video wrappage, description, thumbnail of graphic image class, merging picture of video class and the like, and achieves the purpose of packaging a group of electronic files through a list and auxiliary expansion.
In an optional embodiment, the generic electronic file packaging method provided in the above embodiment further includes:
and establishing a file extension for the empty electronic file, and if the resource occupying space in the electronic file is larger than a preset value is stored in the file extension, taking the file extension as an independent auxiliary file of the encapsulated file.
In the embodiment of the invention, the file extension is an independent auxiliary file, is used as an extension of the packaged file, is mainly used for storing larger resources such as preview video of video electronic files, and realizes the light weight of the packaged file.
In an optional embodiment, in the method for packaging a generic electronic file provided by the embodiment of the present invention, when a null electronic file is created, a metadata area is further initialized in the null electronic file, and the metadata area stores the total number and metadata information of the file. The metadata information generally consists of information such as size, dimension, DPI, format and the like, and user extension type metadata information can also be stored.
The generic electronic file packaging method is suitable for the utilization (such as browsing, printing and the like) of relevant electronic files such as an archive management system, an electronic file management system and the like, and can quickly provide information such as file indexes, lists, metadata, thumbnails and the like.
In an alternative embodiment, the structure of the packaged file obtained by the generic electronic file packaging method is shown in fig. 5.
An embodiment of the present invention provides a generic electronic file packaging apparatus, as shown in fig. 6, including:
the initializing module 21 is configured to create a null electronic file, and initialize an index area, a list data area, and a file data storage area in the null electronic file, for details, see the description in the foregoing embodiments, and details are not described herein again.
The data storage module 22 is configured to acquire a plurality of electronic files, and write file data of each electronic file into the file data storage area, for details, refer to the description in the foregoing embodiments, and no further details are described here.
The list data area establishing module 23 is configured to establish a file data list for each electronic file according to a storage location of file data of each electronic file, and write the file data list into the list data area, where the file data list is used to store a file attribute of the corresponding electronic file and a storage location of the file data, and details are described in the above embodiments and are not repeated here.
The list index area building module 24 is configured to build a list index of each electronic file according to a storage location of the file data list of each electronic file, and write the list index into the list index area, for details, refer to the description in the foregoing embodiment, and are not described herein again.
The index area constructing module 25 is configured to establish an index according to a storage location of the list index of each electronic file, and write the index into the index area, for details, refer to the description in the foregoing embodiments, and are not described herein again.
The file header generating module 26 is configured to write a file header into the empty electronic file, complete encapsulation of each electronic file, and form an encapsulated file, for details, refer to the description in the foregoing embodiment, and details are not described herein again.
An embodiment of the present invention provides a computer device, as shown in fig. 7, the computer device mainly includes one or more processors 31 and a memory 32, where one processor 31 is taken as an example in fig. 7.
The computer device may further include: an input device 33 and an output device 34.
The processor 31, the memory 32, the input device 33 and the output device 34 may be connected by a bus or other means, and fig. 7 illustrates the connection by a bus as an example.
The processor 31 may be a Central Processing Unit (CPU). The Processor 31 may also be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or combinations thereof. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The memory 32 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the generic electronic file packaging apparatus, and the like. Further, the memory 32 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments the memory 32 optionally comprises a memory remotely located with respect to the processor 31, which may be connected to the generic electronic file packaging apparatus via a network. The input device 33 may receive a calculation request (or other numeric or character information) input by a user and generate a key signal input associated with the generic electronic file packaging device. The output device 34 may include a display device such as a display screen for outputting the calculation result.
The embodiment of the invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions can execute the generic electronic file packaging method in any method embodiment. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid State Drive (SSD), or the like; the storage medium may also comprise a combination of memories of the kind described above.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A generic electronic file packaging method is characterized by comprising the following steps:
creating an empty electronic file, and initializing an index area, a list data area and a file data storage area in the empty electronic file;
acquiring a plurality of electronic files, and writing file data of each electronic file into the file data storage area;
establishing a file data list for each electronic file according to the storage position of the file data of each electronic file, and writing the file data list into the list data area, wherein the file data list is used for storing the file attribute of the corresponding electronic file and the storage position of the file data;
establishing a list index of each electronic file according to the storage position of the file data list of each electronic file, and writing the list index into the list index area;
establishing an index according to the storage position of the list index of each electronic file, and writing the index into the index area;
and writing a file header in the empty electronic file to complete the packaging of each electronic file to form a packaged file.
2. The generic electronic file packaging method according to claim 1, wherein if the electronic file contains a graphic image class file, the method further comprises:
initializing a slice list area and a slice list index area;
generating slice data according to the graphic image class file, and writing the slice data into the data storage area;
generating a slice list of each graphic image file by combining the storage position of slice data and slice data information, and writing the slice list into the slice list area;
and generating a list index according to the storage position of the slice list of each graphic image file, and writing the list index into the list index area.
3. The generic electronic file encapsulation method according to claim 1 or 2, further comprising:
initializing a cover image storage area;
writing the envelope data of the audio electronic file and/or the video electronic file into the data storage area;
and writing the storage position of the cover data into the cover image storage area.
4. The generic electronic file packaging method according to any of claims 1-3, further comprising:
initializing a description storage area;
and writing the description information of the audio electronic file and/or the video electronic file into the description storage area.
5. The generic electronic file packaging method according to any of claims 1-4, further comprising:
initializing a thumbnail storage area;
and writing the thumbnail data information of the image electronic file and/or the document electronic file into the thumbnail storage area.
6. The generic electronic file packaging method according to any of claims 1-5, further comprising:
initializing a merged picture storage area;
and writing the preview image data information of the video electronic file at each time point into the merged image storage area.
7. The generic electronic file encapsulation method according to any of claims 1-6, characterized in that a file extension is created for the empty electronic file,
and if the resources occupying the space in the electronic file larger than the preset value are stored in the file extension, the file extension is used as an independent attached file of the packaged file.
8. A generic electronic file packaging apparatus, comprising:
the initialization module is used for creating a null electronic file and initializing an index area, a list data area and a file data storage area in the null electronic file;
the data storage module is used for acquiring a plurality of electronic files and writing the file data of each electronic file into the file data storage area;
the file data list is written into the list data area, and the file data list is used for storing file attributes of the corresponding electronic files and storage positions of the file data;
the list index area building module is used for building a list index of each electronic file according to the storage position of the file data list of each electronic file and writing the list index into the list index area;
the index area building module is used for building an index according to the storage position of the list index of each electronic file and writing the index into the index area;
and the file header generating module is used for writing a file header into the empty electronic file to complete the packaging of each electronic file and form a packaged file.
9. A computer device, comprising:
at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to perform the method of packaging a ubiquitous electronic file according to any of claims 1 to 7.
10. A computer-readable storage medium, characterized in that it stores computer instructions for causing the computer to execute the method of packaging a generic electronic file according to any of claims 1-7.
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CN115757300A (en) * | 2022-12-22 | 2023-03-07 | 北京航星永志科技有限公司 | Electronic file encapsulation method and electronic file decapsulation reading method |
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