CN102063414A - Method and device for positioning file contents - Google Patents

Method and device for positioning file contents Download PDF

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Publication number
CN102063414A
CN102063414A CN2009102376649A CN200910237664A CN102063414A CN 102063414 A CN102063414 A CN 102063414A CN 2009102376649 A CN2009102376649 A CN 2009102376649A CN 200910237664 A CN200910237664 A CN 200910237664A CN 102063414 A CN102063414 A CN 102063414A
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China
Prior art keywords
file
fragment
companionfile
offset address
fragments
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CN2009102376649A
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Chinese (zh)
Inventor
冯永
郑培枫
廖健
饶文辉
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China Digital Video Beijing Ltd
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China Digital Video Beijing Ltd
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Priority to CN2009102376649A priority Critical patent/CN102063414A/en
Publication of CN102063414A publication Critical patent/CN102063414A/en
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Abstract

The invention provides a method and device for positioning file contents. The method comprises the following steps: when a file is stored, generating companion files for the file, wherein the companion files comprise offset addresses aiming at a plurality of file fragments and preview data; when the file is selected, previewing the plurality of file fragments in accordance with the companion files; selecting the required file fragments in the plurality of previewed file fragments, and acquiring the offset addresses corresponding to the file fragments; and according to the offset addresses, loading the contents of the corresponding file fragments. The method is used to fast and effectively position one or a plurality of file fragments inside the file.

Description

The method and apparatus of a kind of file content location
Technical field
The present invention relates to the file processing field, particularly relate to the method and apparatus of a kind of file content location.
Background technology
In routine duties, need frequent application to arrive file, this just requires to navigate to fast the certain content and the editor that makes amendment in a file.If file itself is smaller, location work is easy to finish.File with the text class is an example, can be after opening file, search for, navigate to the content such as certain word, speech of file inside again.
But when above-mentioned localization method is applied to big file, loads file itself and just need take a long time.With the captions project file is example, and the project file of being made up of a large amount of scenes often takies very big disk space usually, for example, takies hundreds of million, even the space of several G.Suppose that certain project file has 1200 scenes, and by depositing order with digital 1,2,3 ..., 1200 are numbered these scenes, like this, when the user wants to edit the 100-150 scene, need open whole project file earlier, and then described 50 scenes of searching for, navigating to project file inside, just carry out editing at last.Therefore, above-mentioned localization method can not satisfy the requirement of user to locating speed.
In a word, need the urgent technical matters that solves of those skilled in the art to be exactly: how the method for a kind of file content location can be provided, can navigate to certain or a plurality of file fragment of file inside quickly and efficiently.
Summary of the invention
Technical matters to be solved by this invention provides the method and apparatus of a kind of file content location, in order to navigate to certain or a plurality of file fragment of file inside quickly and efficiently.
In order to address the above problem, the invention discloses the method for a kind of file content location, comprising:
When preserving file, for this document generates CompanionFile, described CompanionFile comprises at the offset address of a plurality of file fragments and preview data;
When selecting files, described a plurality of file fragments are carried out preview according to CompanionFile;
From a plurality of file fragments of preview, select required file fragment, and obtain the offset address of described file fragment correspondence;
According to offset address, load the content of corresponding document fragment.
Preferably, described file comprises a plurality of file fragments;
The generation step of described CompanionFile comprises:
For each file fragment generates map record, described map record comprises numbering, reference position, final position and the snapshot of each file fragment;
The map record of combination All Files fragment obtains CompanionFile.
Preferably, described loading step is, opens this document, and according to offset address, navigates to certain file fragment of file inside, perhaps, according to offset address, only opens required file fragment.
Preferably, described preview step comprises:
When in the File Open window, selecting this document, show the snapshot of each file fragment in the CompanionFile in the window peripheral region.
Preferably, before loading step, also comprise: read file header information;
Described loading step comprises: according to offset address and the file header information that reads, load the content of corresponding document fragment.
The invention also discloses a kind of file content locating device, comprising:
Generation module, when being used to preserve file, for this document generates CompanionFile, described CompanionFile comprises at the offset address of a plurality of file fragments and preview data;
Previewing module is used for when selecting files, and according to CompanionFile described a plurality of file fragments is carried out preview;
Acquisition module is used for selecting required file fragment from a plurality of file fragments of preview, and obtains the offset address of described file fragment correspondence;
Loading module is used for according to offset address, loads the content of corresponding document fragment.
Preferably, described generation module comprises:
The map record generation unit is used for when file comprises a plurality of file fragment, and for each file fragment in the file generates map record, described map record comprises numbering, reference position, final position and the snapshot of each file fragment;
Assembled unit is used to make up the map record of all fragments, obtains CompanionFile.
Preferably, described previewing module comprises:
The window display unit is used for showing the snapshot of each file fragment in the CompanionFile in the window peripheral region when the File Open window is selected this document.
Preferably, also comprise:
Read module is used to read file header information;
Described loading module is used for loading the content of corresponding document fragment according to offset address and the file header information that reads.
Compared with prior art, the present invention has the following advantages:
The present invention is when preserving file, for this document generates CompanionFile automatically, because this document is made up of a plurality of independently file fragments, and preview data and offset address have been comprised in the described CompanionFile at described a plurality of file fragments, so described preview data has the ability of distinguishing different file fragments, described offset address points to the position of file fragment, therefore, the user sees the preview data of a plurality of file fragments in the CompanionFile, just can determine required file fragment, and after selecting required file fragment, can obtain the offset address of described file fragment correspondence automatically, thereby required file fragment is loaded according to described offset address.Like this, when locating required file fragment, need not to open whole file, only load described file fragment and just can finish location work, can reduce consumed time in the position fixing process, improve location efficiency, thereby make things convenient for the user to carry out quick, effective location of file fragment;
Secondly, in the process that laden required file fragment is edited, the present invention can load other file fragment in the file successively, can satisfy the location requirement that the user brings in constant renewal in;
Moreover in the process that current file is edited, the present invention can load the file fragment in other file successively, thereby can satisfy editor's demand that the user brings in constant renewal in.
Description of drawings
Fig. 1 is the process flow diagram of a kind of file content localization method of the present invention embodiment;
Fig. 2 is the structural drawing of a kind of file content locating device of the present invention embodiment.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Since between a plurality of file fragments in the file is separate, so, when the user locatees certain file fragment, need not to open whole file, only load this document fragment and just can finish location work.And know the position of file fragment in practice, just can load certain file fragment.
Therefore, the inventor herein has creatively proposed one of core idea of the embodiment of the invention, promptly when preserving file, automatically the address with each file fragment in the file records CompanionFile, correspondingly, also write down the preview data of each file fragment in this CompanionFile, like this, the user is by selecting files, in the preview CompanionFile during preview data of a plurality of file fragments, just can determine which file fragment is required, thereby pass through in the position of required file fragment reading of content, the purpose that realizes loading required file fragment.
With reference to Fig. 1, show the process flow diagram of a kind of file content localization method of the present invention embodiment, specifically can comprise:
When step 101, preservation file, be that this document generates CompanionFile, described CompanionFile comprises at the offset address of a plurality of file fragments and preview data;
The present invention adopts when preserving file and generates described CompanionFile, also promptly generates CompanionFile in the deposit process, can guarantee that the content in the CompanionFile is up-to-date, can not miss the opportunity of showing for the user when reopening file again.
Mention above, the user sees the preview data of a plurality of file fragments in the CompanionFile, just should be able to determine which file fragment is required, therefore, only possess certain discrimination, preview data could come a file fragment and the difference of other file fragment.And a plurality of file fragments in the file are separate and different, so the preview data that obtains at a plurality of file fragments can satisfy the requirement of discrimination.
With " * .ppt " text is example, and file is made up of a plurality of lantern slides, and is separate between these lantern slides, and each lantern slide comprises some titles and text, as main title, subtitle, text 1, text 2 etc.Because common lantern slide has one or more text boxes, thereby takies bigger disk space, and the content in the text box is simple text, can not take much spaces, therefore, in practice, can acquire the preview data of lantern slide based on the text box content.An easy mode can be for directly inciting somebody to action corresponding " outline " direct preview data as certain lantern slide.
The present invention adopts offset address to point to the position of file fragment in the file.In practice, described offset address can be counted from file header, also can count from known location, and the present invention is not limited this.
In a preferred embodiment of the present invention, for the file of being made up of a plurality of file fragments, the generation step of its CompanionFile can comprise following substep:
Substep A1, be that each file fragment generates map record, described map record comprises numbering, reference position, final position and the snapshot of each file fragment;
The front is mentioned, the quick location of file fragment, require to comprise preview data in the CompanionFile with discrimination, and the offset address that points to the position of file fragment in the file, therefore, the present invention adopts the mode of one-to-many mapping, also promptly each fragment is shone upon, and obtains comprising the map record of preview data and offset address.
In specific implementation, because pel can play eye-catching effect, preview data of the present invention preferentially adopts the snapshot of figure n-ary form n.And adopt reference position and final position to describe the offset address of certain file fragment with respect to file header.In practice, described reference position and final position can be by fseek (FILE*stream, long offset, int origin) obtain, wherein, first parameter s tream is a file pointer, offset is skew, reference position such as file fragment is the 10000th byte of file, and offset just should be 10000, and origin is used for sign and counts or count from end of file from file header.
With " * .ppt " text of comprising 100 lantern slides is example, and the map record of the 10th lantern slide can comprise: this lantern slide numbering 10, reference position, final position and snapshot hereof.
The map record of substep A2, combination All Files fragment obtains CompanionFile.
Under the film titler applied environment, the project file of application is made up of a plurality of scenes, and is separate between these scenes, and comprises several subtitle elements in each scene, for example, has literal, figure of various special effects etc.Under this environment, the generation step of described CompanionFile can comprise:
Substep B1, be that each scene generates map record;
For example, certain project file has 1200 scenes, and the map record of the 5th scene can comprise so: the snapshot of the reference position of the numbering 5 of this scene in project file, this scene and final position, this scene.Wherein, described reference position and final position can be the deviation post (offset) of this scene with respect to this project file file header, and described snapshot can be for compressing the pel (Icon) that obtains, for example to this scene, the snapshot size can be 32 * 32,64 * 64 etc.
Substep B2, make up the map record of all scenes, obtain CompanionFile.
For above-mentioned example, 100 map records have been comprised in the CompanionFile of described project file.
Step 102, when selecting files, described a plurality of file fragments are carried out preview according to CompanionFile;
This step is with the preview data of a plurality of file fragments in the CompanionFile, shows the user.
In specific implementation, owing to snapshot is preserved to scheme n-ary form n, and pel can play eye-catching effect, so the present invention preferentially shows the snapshot of user figure n-ary form n.For example, certain project file has 100 scenes, and the user can see the snapshot of described 100 scenes when selected this project file so.
Corresponding to the situation of suspension display, described preview step can comprise:
When mouse-pointing this document, the snapshot of each file fragment or scene in mouse peripheral region suspension display CompanionFile.
For example, in explorer, when mouse-pointing " new files " project file, the snapshot in the corresponding CompanionFile will be suspended in the lower right of mouse.
Corresponding to the situation that window is showed, described preview step can comprise:
When in the File Open window, selecting this document, the snapshot of each file fragment or scene in window peripheral region demonstration CompanionFile.
For example, in " opening " window, singly-bound is chosen " new files 2 " file, the All Files fragment in the CompanionFile or the snapshot of scene will be presented at window under.
In specific implementation, a kind of like this situation is arranged, and for the project file with a plurality of scenes (for example 100 scenes), the display screen of common size is the snapshot that can't show all scenes simultaneously, therefore, the present invention can take to drag the mode of demonstration, for example when preview, with 10 scenes serves as to show at interval, at first show preceding 10 scenes, when dragging mouse the n time, show the individual scene in 10n+1~10 (n+1) then.
Step 103, from a plurality of file fragments of preview, select required file fragment, and obtain the offset address of described file fragment correspondence;
In practice, described selection operation can for, from a plurality of file fragments of preview, select one or more file fragments as required, wherein, when selecting a plurality of file fragment, the numbering of described a plurality of file fragments can be continuous, can disperse, the present invention is not limited this yet.
Step 104, according to offset address, load the content of corresponding document fragment.
Because described offset address can be the deviation post (offset) with respect to file header, also can be offset with respect to known location, so, when loading, also need to read file header information or known location, need the absolute position of the file fragment of device with acquisition.
Corresponding to offset address is situation with respect to the offset of file header, in a preferred embodiment of the present invention, before step 104, can also comprise the step that reads file header information;
In this case, described loading operation can for, according to offset address and the file header information that reads, load the content of corresponding document fragment.
Described loading step at situation comprise: open this document, and, navigate to certain file fragment of file inside according to offset address, and, according to offset address, only open the required file fragment of selection.
For " * .ppt " text, the disk space that it takies, from several million to tens do not wait, and how long open a complete file does not need cost.In addition, though between a plurality of lantern slides in the file separate, the content between them has certain association, and the user needs often to leaf through forward or look for backward when certain lantern slide of editor.Therefore, in a preferred embodiment of the present invention, described loading step can for, open whole file, and, navigate to certain file fragment of file inside according to offset address.
For the captions project file, it often takies very big disk space, for example, takies hundreds of million, even the space of several G, opens the time that whole file needs a few minutes.In addition, between a plurality of scenes in the file is separate, captions project file with the first phase variety show is an example, its scene content probably is the comprehensive of host's captions scene and welcome guest's captions scene, and does not have related between the scene of certain host captions scene at a time and front and back.Therefore, in a preferred embodiment of the present invention, described loading step can for, according to offset address, only open required scene.
The present invention is when preserving file, for this document generates CompanionFile automatically, because this document is made up of a plurality of independently file fragments, and preview data and offset address have been comprised in the described CompanionFile at described a plurality of file fragments, so described preview data has the ability of distinguishing different file fragments, described offset address points to the position of file fragment, therefore, the user sees the preview data of a plurality of file fragments in the CompanionFile, just can determine required file fragment, and after selecting required file fragment, can obtain the offset address of described file fragment correspondence automatically, thereby required file fragment is loaded according to described offset address.Like this, when locating required file fragment, need not to open whole file, only load described file fragment and just can finish location work, can reduce consumed time in the position fixing process, improve location efficiency, thereby make things convenient for the user to carry out quick, effective location of file fragment.
Be appreciated that, in the process that laden required file fragment is edited, if check the demand of the file fragment of other unloaded in addition, at this moment, in " opening " window of current file, by repeated execution of steps 102-104, can load the file fragment in the file successively, thereby can satisfy the location requirement of continual renovation.
In addition, if in editing process, check the demand of the file fragment in other file in addition, at this moment, can be in " opening " window of current file, by repeated execution of steps 102-104, load the file fragment in other file successively, to satisfy the demand of bringing in constant renewal in of checking.The present invention is not limited concrete loading data and loading number of times.
With reference to Fig. 2, show the structural drawing of a kind of file content locating device of the present invention embodiment, specifically can comprise:
Generation module 201, when being used to preserve file, for this document generates CompanionFile, described CompanionFile comprises at the offset address of a plurality of file fragments and preview data;
For the file of being made up of a plurality of file fragments, in a preferred embodiment of the present invention, described generation module 201 can comprise:
Map record generation unit 211 is used for when file comprises a plurality of file fragment, and for each file fragment in the file generates map record, described map record comprises numbering, reference position, final position and the snapshot of each file fragment;
Assembled unit 212 is used to make up the map record of all fragments, obtains CompanionFile.
Previewing module 202 is used for when selecting files, and according to CompanionFile described a plurality of file fragments is carried out preview;
In specific implementation, corresponding to the situation of suspension display, described previewing module can comprise:
The suspension display unit is used for when mouse-pointing this document, the snapshot of each file fragment or scene in mouse peripheral region suspension display CompanionFile.
Corresponding to the situation that window is showed, described previewing module can comprise:
Window display unit 221 is used for when the File Open window is selected this document, the snapshot of each file fragment or scene in window peripheral region demonstration CompanionFile.
Acquisition module 203 is used for selecting required file fragment from a plurality of file fragments of preview, and obtains the offset address of described file fragment correspondence;
The present invention adopts offset address to point to the position of file fragment in the file.In practice, described offset address can be counted from file header, also can count from known location, and the present invention is not limited this.
Loading module 204 is used for according to offset address, loads the content of corresponding document fragment.
Corresponding to offset address is situation with respect to the offset of file header, and in a preferred embodiment of the present invention, described device can also comprise: read module 205 is used to read file header information;
Under this situation, described loading module is used for loading the content of corresponding document fragment according to offset address and the file header information that reads.
Each embodiment in this instructions all adopts the mode of going forward one by one to describe, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For system embodiment, because it is similar substantially to method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.
The present invention can be applied to the file that " * .ppt " text, project file etc. are made up of a plurality of file fragments, is used for the file fragment of quick locating file.
More than to the method and apparatus of a kind of file content provided by the present invention location, be described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (9)

1. the method for a file content location is characterized in that, comprising:
When preserving file, for this document generates CompanionFile, described CompanionFile comprises at the offset address of a plurality of file fragments and preview data;
When selecting files, described a plurality of file fragments are carried out preview according to CompanionFile;
From a plurality of file fragments of preview, select required file fragment, and obtain the offset address of described file fragment correspondence;
According to offset address, load the content of corresponding document fragment.
2. the method for claim 1 is characterized in that, described file comprises a plurality of file fragments;
The generation step of described CompanionFile comprises:
For each file fragment generates map record, described map record comprises numbering, reference position, final position and the snapshot of each file fragment;
The map record of combination All Files fragment obtains CompanionFile.
3. method as claimed in claim 2 is characterized in that, described loading step is, opens this document, and according to offset address, navigates to certain file fragment of file inside, perhaps, according to offset address, only opens required file fragment.
4. method as claimed in claim 2 is characterized in that, described preview step comprises:
When in the File Open window, selecting this document, show the snapshot of each file fragment in the CompanionFile in the window peripheral region.
5. the method for claim 1 is characterized in that, before loading step, also comprises: read file header information;
Described loading step comprises: according to offset address and the file header information that reads, load the content of corresponding document fragment.
6. a file content locating device is characterized in that, comprising:
Generation module, when being used to preserve file, for this document generates CompanionFile, described CompanionFile comprises at the offset address of a plurality of file fragments and preview data;
Previewing module is used for when selecting files, and according to CompanionFile described a plurality of file fragments is carried out preview;
Acquisition module is used for selecting required file fragment from a plurality of file fragments of preview, and obtains the offset address of described file fragment correspondence;
Loading module is used for according to offset address, loads the content of corresponding document fragment.
7. device as claimed in claim 6 is characterized in that, described generation module comprises:
The map record generation unit is used for when file comprises a plurality of file fragment, and for each file fragment in the file generates map record, described map record comprises numbering, reference position, final position and the snapshot of each file fragment;
Assembled unit is used to make up the map record of all fragments, obtains CompanionFile.
8. device as claimed in claim 7 is characterized in that, described previewing module comprises:
The window display unit is used for showing the snapshot of each file fragment in the CompanionFile in the window peripheral region when the File Open window is selected this document.
9. device as claimed in claim 6 is characterized in that, also comprises:
Read module is used to read file header information;
Described loading module is used for loading the content of corresponding document fragment according to offset address and the file header information that reads.
CN2009102376649A 2009-11-13 2009-11-13 Method and device for positioning file contents Pending CN102063414A (en)

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CN104135628A (en) * 2013-05-03 2014-11-05 安凯(广州)微电子技术有限公司 Video editing method and terminal

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Application publication date: 20110518