CN106202119A - SNB e-book storage organization and wiring method thereof and read method - Google Patents
SNB e-book storage organization and wiring method thereof and read method Download PDFInfo
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Abstract
The invention discloses a kind of SNB e-book storage organization, described SNB e-book storage organization is divided into header file district, content-control district and content regions；Storage no encryption in header file district indicates position and compression method generation information；Content-control district is in storage: chopping rule, metadata quantity, meta-data region takes up room, quantity of documents, directory area take up room, compress directory area takes up room, uncompressed content takes up room, compressed content takes up room, additional information region takes up room；Content regions: the content of storage e-book；The invention also discloses wiring method and the read method of described SNB e-book storage organization.The SNB e-book storage organization of the present invention can overcome partial copyright and persistently load the problem causing the read-write inconvenience of existing e-book storage organization.
Description
Technical field
The present invention relates to computer realm, particularly relate to a kind of SNB e-book storage organization；The invention still further relates to described
The wiring method of SNB e-book storage organization and read method.
Background technology
Along with the high speed development of current science and technology, the Internet is read user and is got more and more, and substantial amounts of user likes at various equipment
Upper reading documents, e-book form is put forward high-quality in the storage and distribution of data by this demand read across screen
Requirement.
E-book on the Internet has two important feature.One of them feature be a book chapters and sections have free chapters and sections and
Dividing of charge chapters and sections, author typically first issues some free chapters and sections when the world view of book has been handed over entrance core on network
Vip chapters and sections will be issued the when of heart conflict namely to charge chapters and sections.Also have feature be the reading of e-book be with chapter
Joint is unit, and reader once only can download some chapters and sections and read.Two problems above can be attributed to partial copyright
Persistently loading two problems, the solution of the two problem is to realize the basis that online charging is read, currently without instrument and
Agreement solves this problem.
Invent novel content
The technical problem to be solved in the present invention be to provide one can overcome partial copyright and persistently load cause existing e-book
The SNB e-book storage organization of storage organization read-write inconvenience；Present invention also offers described SNB e-book storage organization
Wiring method and read method.
For solving the SNB e-book storage organization that the above-mentioned technical problem present invention provides, including:
Described SNB e-book storage organization is divided into header file district, content-control district and content regions；
Header file district accounts for whether 8 bytes encrypt sign position and compression method generation information for storing e-book, first 4
Whether byte storage encrypts sign position, and details encrypted, and such as uses the length of key, the encryption method of employing,
The information such as the side-play amount that encrypted section starts, terminate are stored in the additional information region in content-control district, and rear 4 byte storages are adopted
Compression algorithm code name.
Content-control district accounts for 36 bytes for storing:
Chopping rule: describe the byte quantity of each segmentation by 4 bytes；
Metadata quantity: describe the quantity of storage metadata group by 4 bytes；
Meta-data region is in the side-play amount of content regions: this side-play amount is that integer number stores by 4 bytes, and these data show unit
Data occupy the byte number that content regions starts, and metadata refers to the feature description character string of SNB, and this part is used for expanding
The function of SNB e-book storage organization；Described integer number (INTEGER) is the numeric type number not comprising fractional part.
Quantity of documents: describe by 4 bytes and store quantity of documents in the sub-level catalogue that e-schoolbag contains；
Directory area is in the side-play amount of content regions: being that an integer number stores by 4 bytes, the bright directory information of this tables of data accounts for
With the byte number behind meta-data region in content regions, directory area refers to a kind of logical partitioning of book, the thematic information of such as book,
Chapter List information；
Compression directory area takes up room (taking byte quantity, if can be understood as taking up room): describe by 4 bytes
Byte quantity after directory area compression；
Uncompressed content is in the side-play amount of content regions: being that integer number takies 4 bytes, these data show that uncompressed content accounts for
With the byte number behind directory area in content regions, uncompressed content generally refers to the free chapters and sections of book；
Compressed content is in the side-play amount of content regions: be that integer number takies 4 bytes, in these data show that compressed content takies
Holding the byte number behind uncompressed content regions in district, compressed content is usually the charge chapters and sections of book；
Additional information region is in the side-play amount of content regions: being that integer number takies 4 bytes, these data show that additional information takies
Byte number behind compressed content district in content regions, additional information refers to the control information of SNB form, and these control information
Comprise the method that SNB uses encryption, the key of encryption, the beginning of encrypted section, the side-play amount of end；
Content regions: the content of storage e-book, at least includes herein below:
Book.snbf storage e-book summary info, summary info comprise the coding of book, front cover, language, publisher,
Producer, establishment time；
A kind of special topic of toc.snbf storage e-book divides, and name that the information of storage comprises special topic, describes and comprises
Chapter List；
The Chapter List information of toc_content.snbf storage e-book, Chapter List information spinner volume information to be comprised, chapter
Section name claims and Chapter List；
Chapter.snbc mainly stores the content of one chapters and sections of e-book.
The wiring method of described SNB e-book storage organization, comprises the following steps:
1) e-book logical file is created: summary file, index file and content file；
Summary file: at least include: version, author, language, title, publisher, making side's information；
Index file: the e-book logical partitioning rule that storage is preset；
Content file: the content of storage one chapters and sections of e-book；
2) write SNB e-book storage organization；
A: obtain the content information of e-book, i.e. obtains the content of snbc class file of composition e-book i.e. chapters and sections
Content, the content of the most first encryption recompression book；
B: obtain the index information of e-book, i.e. obtain the snbf class file content of e-book, comprise the summary info of book
Book.snbf, thematic information toc.snbf and Chapter List information toc_content.snbf；
C: according to chopping rule, content information and the index information of book being divided into different sections, the calculating of this length is basis
The byte-sized of storage book content calculates, it is assumed that the byte-sized of content is that A then A obtains this numerical value divided by 64；
D: will whether encrypt the 1st～the 4th byte indicating position write SNB e-book storage organization；By the code name of compression algorithm
5th～the 8th byte of write SNB e-book storage organization；This step constructs the header file of SNB e-book storage organization
District；
E: chopping rule is write the 9th～the 12nd byte of SNB e-book storage organization；
The the 13rd～the 16th byte by metadata quantity write SNB e-book storage organization；
The the 17th～the 20th byte by the meta-data region side-play amount write SNB e-book storage organization in content regions；
Quantity of documents is written to the 21st～the 24th byte of SNB e-book storage organization；
The the 25th～the 28th byte by the directory area side-play amount write SNB e-book storage organization in content regions；
Compression directory area is taken up room and writes the 29th～the 32nd byte of SNB e-book storage organization；
The the 33rd～the 36th byte by the uncompressed content side-play amount write SNB e-book storage organization in content regions；
The the 37th～the 40th byte by the compressed content side-play amount write SNB e-book storage organization in content regions；
The the 41st～the 44th byte by the additional information region side-play amount write SNB e-book storage organization in content regions；
This step builds the content-control district of SNB e-book storage organization；
F: start to write successively the metadata information of book from 45 bytes of SNB e-book storage organization, directory area information,
Uncompressed content information, compressed content information and additional content information；This step constructs the interior of SNB e-book storage organization
Hold district.
The read method of described SNB e-book storage organization, comprises the following steps:
A) resolve the header file district of SNB e-book storage organization, judge SNB e-book according to the numerical value of the 1st～the 4th byte
Whether storage organization is encrypted, and four byte datas read are converted to character, if the character after changing is E, and this SNB
File have employed encryption method otherwise this SNB file content and do not encrypts；Numerical value according to the 5th～the 8th byte judges SNB
The compression algorithm of e-book storage organization, if by read four byte conversion be this character of character be B; have employed
BZIP2 compression algorithm, if 0 have employed GZIP compression algorithm.
B) control zone of SNB e-book storage organization is resolved；
Chopping rule is obtained by the numerical value of the 9th～the 12nd byte storage；
Metadata quantity is obtained by the numerical value of the 13rd～the 16th byte storage；
The meta-data region side-play amount in content regions is obtained by the numerical value of the 17th～the 20th byte storage；
Quantity of documents is obtained by the numerical value of the 21st～the 24th byte storage；
The directory area side-play amount in content regions is obtained by the numerical value of the 25th～the 28th byte storage；
Obtained compression directory area by the numerical value of the 29th～the 32nd byte storage to take up room；
The uncompressed content side-play amount in content regions is obtained by the numerical value of the 33rd～the 36th byte storage；
The compressed content side-play amount in content regions is obtained by the numerical value of the 37th～the 40th byte storage；
The additional information region side-play amount in content regions is obtained by the numerical value of the 41st～the 44th byte storage；
C) resolving metadata, the meta-data region side-play amount in content regions is stored in the 17th～the 20th byte in content-control district
In, obtain the numerical value O of content-control district the 17th～the 20th byte, then from the 45th byte～45+O byte be meta-data region；
The form of meta-data region is length+content, first obtains the 1st～the 4th byte of meta-data region, then according to these 4 bytes
Numerical values recited obtain metadata content, repeat this step and obtain multiple metadata；
D) resolving directory area, directory area takes up room in the 25th～the 28th byte being stored in content-control district, obtains content
For P, then from 45+O byte～45+O+P byte be directory area；
If directory area size and compression directory area cause not of uniform size, come according to the compression algorithm of the 5th～the 8th byte storage
Decompress directory area.
E) content regions is resolved；
Resolve uncompressed content regions, obtain the numerical value Q of content-control district the 33rd～the 36th byte, then 45+O+P byte～
45+O+P+Q byte is uncompressed content regions, reads this part and obtains uncompressed content, then according to the 9th～the 12nd
The chopping rule of byte storage splits into multiple chapters and sections；
Resolve compressed content district, obtain the numerical value R of content-control district the 37th～the 40th byte, then 45+O+P+Q byte～
45+O+P+Q+R byte is compressed content district, finds out corresponding decompression according to the compression algorithm code name of header file storage
Algorithm decompresses the contents of the section；
Resolve additional information region, obtain the numerical value S of content-control district the 41st～the 44th byte, 45+O+P+Q+R byte～
45+O+P+Q+R+S byte is additional information region；Obtain encryption method, key length that this partial bytes is recorded；With
And the section content that encrypted section information starts, ending message deciphering is corresponding, it is split as chapters and sections according to chopping rule.
Owing to the present invention is to compress according to section and encryption data, a SNB file can exist encryption and unencryption simultaneously
Section, therefore can solve certainly partial copyright problem, the SNB Documents Logical of the present invention is made up of multiple files, obtain in
Have only to the when of appearance read file header and the chapters and sections information of response, the problem that therefore can solve persistently to load.
Accompanying drawing explanation
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings:
Fig. 1 is the structural representation of SNB e-book storage organization one embodiment of the present invention.
Detailed description of the invention
As it is shown in figure 1, a kind of SNB e-book storage organization that the present invention provides, including:
SNB e-book storage organization entirety is divided into three districts, i.e. header file district, content-control district and content regions.Header file
District's storage encryption and compression information；The division information of storage content regions, content-control district；The content of content regions storage e-book.
Described in detail below:
Header file district
X: account for 4 bytes, describes SNB e-book storage organization and adds confidential information.Value P represents and does not encrypts；Value E
Represent encryption.
Y: account for 4 bytes, describes SNB e-book storage organization compression algorithm code name.Value B represents and uses BZIP2 pressure
Compression algorithm；Value 0 represents GZIP compression algorithm.
Content-control district
A chopping rule: account for 4 bytes, store the byte capacity of every section；
B metadata quantity: account for 4 bytes, storage metadata has how many groups；
C meta-data region is in the side-play amount of content regions: account for 4 bytes, and how many bytes that description content regions starts store
The variable information of file.This variable information is mainly used in providing redundant space to extend new merit for SNB e-book storage organization
Energy；
D quantity of documents: account for 4 bytes, quantity of documents in the sub-level catalogue that storage e-schoolbag contains；
E directory area is in the side-play amount of content regions: account for 4 bytes, and describe content regions following how many bytes storage is mesh
Record information；
F compression directory area takes up room: account for 4 bytes, and the size of directory area after storage compression, if directory area takies
Space and compression directory area take up room inconsistent, show that directory area have employed compression algorithm；
The g uncompressed content side-play amount in content regions: account for 4 bytes, describes content regions ensuing how many bytes storage
Be unpressed content；
H compressed content is in the side-play amount of content regions: account for 4 bytes, describes content regions ensuing how many bytes storage
Be compressed content；
I additional information region is in the side-play amount of content regions: account for 4 bytes, describes content regions following how many bytes storage
It is additional information, the information such as additional confidence comprises the method for encryption, the length of key.
Content regions
C: the metadata of storage SNB e-book storage organization, this part is mainly used in expanding format function, is redundant digit
According to
E: directory area, the main directory information storing books, comprise three kinds of files
1: the summary info book.snbf of book,
2: thematic information toc.snbf
3: and Chapter List information toc_content.snbf
G: uncompressed content regions, the main free chapters and sections information storing data
H: compressed content district, the main charge chapters and sections information storing books
I: additional information region, the encryption details that main storage SNB e-book storage organization uses, details bag
Containing the AES used, the length etc. of key.
The wiring method of a kind of described SNB e-book storage organization, comprises the following steps:
1) e-book logical file is created: summary file, index file and content file；
Summary file: at least include: version, author, language, title, publisher, making side's information；
Index file: the e-book logical partitioning rule that storage is preset；
Content file: the content of storage one chapters and sections of e-book；
2) write SNB e-book storage organization；
A: obtain the content information of e-book, i.e. obtains the content of snbc class file of composition e-book i.e. chapters and sections
Content, the content of the most first encryption recompression book；
B: obtain the index information of e-book, i.e. obtain the snbf class file content of e-book, comprise the summary info of book
Book.snbf, thematic information toc.snbf and Chapter List information toc_content.snbf；
C: according to certain length, content information and the index information of book being divided into different sections, the calculating of this length is
Byte-sized according to storage book content calculates, it is assumed that the byte-sized of content is that A then A obtains this number divided by 64
Value；
D: will whether encrypt the 1st～the 4th byte indicating position write SNB e-book storage organization；By the code name of compression algorithm
5th～the 8th byte of write SNB e-book storage organization；This step constructs the header file of SNB e-book storage organization
District；
E: chopping rule is write the 9th～the 12nd byte of SNB e-book storage organization；
The the 13rd～the 16th byte by metadata quantity write SNB e-book storage organization；
The the 17th～the 20th byte by the meta-data region side-play amount write SNB e-book storage organization in content regions；
Quantity of documents is written to the 21st～the 24th byte of SNB e-book storage organization；
The the 25th～the 28th byte by the directory area side-play amount write SNB e-book storage organization in content regions；
Compression directory area is taken up room and writes the 29th～the 32nd byte of SNB e-book storage organization；
The the 33rd～the 36th byte by the uncompressed content side-play amount write SNB e-book storage organization in content regions；
The the 37th～the 40th byte by the compressed content side-play amount write SNB e-book storage organization in content regions；
The the 41st～the 44th byte by the additional information region side-play amount write SNB e-book storage organization in content regions；
The content-control district of this structure SNB e-book storage organization；
F: start to write successively the metadata information of book from 45 bytes of SNB e-book storage organization, directory area information,
Uncompressed content information, compressed content information and additional content information；This step constructs the interior of SNB e-book storage organization
Hold district.
The read method of a kind of described SNB e-book storage organization, comprises the following steps:
A) resolve the header file district of SNB e-book storage organization, judge SNB electronics according to the numerical value of the 1st～the 4th byte
Whether book storage organization is encrypted, and four byte datas read are converted to character, if the character after changing is E, and should
SNB file have employed encryption method otherwise this SNB file content and do not encrypts；Numerical value according to the 5th～the 8th byte judges
The compression algorithm of SNB e-book storage organization, if by read four byte conversion be this character of character be B; use
BZIP2 compression algorithm, if 0 have employed GZIP compression algorithm；
B) control zone of SNB e-book storage organization is resolved；
Chopping rule is obtained by the numerical value of the 9th～the 12nd byte storage；
Metadata quantity is obtained by the numerical value of the 13rd～the 16th byte storage；
The meta-data region side-play amount in content regions is obtained by the numerical value of the 17th～the 20th byte storage；
Quantity of documents is obtained by the numerical value of the 21st～the 24th byte storage；
The directory area side-play amount in content regions is obtained by the numerical value of the 25th～the 28th byte storage；
Obtained compression directory area by the numerical value of the 29th～the 32nd byte storage to take up room；
The uncompressed content side-play amount in content regions is obtained by the numerical value of the 33rd～the 36th byte storage；
The compressed content side-play amount in content regions is obtained by the numerical value of the 37th～the 40th byte storage；
The additional information region side-play amount in content regions is obtained by the numerical value of the 41st～the 44th byte storage；
C) metadata is resolved, in the 17th～the 20th byte being stored in content-control district that takes up room of metadata, in obtaining
Hold the numerical value O of control zone the 17th～the 20th byte, then from the 45th byte～45+O byte be meta-data region；Meta-data region
Form is length+content, first obtains the 1st～the 4th byte of meta-data region, then according to the numerical values recited of these 4 bytes
Obtain the content of metadata, repeat this step and obtain multiple metadata；
D) resolving directory area, the directory area side-play amount in content regions is stored in the 25th～the 28th byte in content-control district,
Obtain the numerical value P of content-control district the 25th～the 28th byte, then from 45+O byte～45+O+P byte be directory area；
If directory area size and compression directory area cause not of uniform size, come according to the compression algorithm of the 5th～the 8th byte storage
Decompress directory area.
E) content regions is resolved；
Resolve uncompressed content regions, obtain the numerical value Q of content-control district the 33rd～the 36th byte, then 45+O+P byte～
45+O+P+Q byte is uncompressed content regions, reads this part and obtains uncompressed content, then according to the 9th～the 12nd
The chopping rule of byte storage splits into multiple chapters and sections；
Resolve compressed content district, obtain the numerical value R of content-control district the 37th～the 40th byte, then 45+O+P+Q byte～
45+O+P+Q+R byte is compressed content district, finds out corresponding decompression according to the compression algorithm code name of header file storage
Algorithm decompresses the contents of the section；
Resolve additional information region, obtain the numerical value S of content-control district the 41st～the 44th byte, 45+O+P+Q+R byte～
45+O+P+Q+R+S byte is additional information region；Obtain encryption method, key length that this partial bytes is recorded；With
And the section content of the section sequence number deciphering correspondence of encryption, it is split as chapters and sections according to chopping rule.
Above by detailed description of the invention and embodiment, the present invention is described in detail, but these have not been constituted this
The restriction of invention.Without departing from the principles of the present invention, those skilled in the art it may also be made that many deformation and changes
Entering, these also should be regarded as protection scope of the present invention.
Claims (7)
1. a SNB e-book storage organization, is characterized in that:
Described SNB e-book storage organization is divided into header file district, content-control district and content regions；
Header file district accounts for 8 bytes for storing whether e-book encrypts sign position and compression method generation information, header file
Whether the 1st～the 4th byte storage in district encrypts sign position, and the compression that the 5th～the 8th byte storage in header file district uses is calculated
Method code name；
Content-control district accounts for 36 bytes for storing herein below:
A. chopping rule: describe the byte quantity of each segmentation by 4 bytes；
B. metadata quantity: describe the quantity of storage metadata group by 4 bytes；
C. meta-data region is in the side-play amount of content regions: this side-play amount is integer number, stores by 4 bytes, this tables of data
Bright metadata occupies the byte number that content regions starts, and metadata refers to the feature description character string of SNB, and this part is used for
Expand the function of SNB；
D. quantity of documents: describe by 4 bytes and store quantity of documents in the sub-level catalogue that e-schoolbag contains；
E. directory area is in the side-play amount of content regions: be that integer number takies 4 bytes, in the bright directory information of this tables of data takies
Hold the byte number behind meta-data region in district；F. compression directory area takes up room: after describing directory area compression by 4 bytes
Byte quantity；
The most uncompressed content is in the side-play amount of content regions: being that integer number takies 4 bytes, these data show uncompressed content
Take the byte number behind directory area in content regions；
H. compressed content is in the side-play amount of content regions: being that integer number takies 4 bytes, these data show that compressed content takies
Byte number behind uncompressed content regions in content regions；
I. additional information region is in the side-play amount of content regions: being that integer number takies 4 bytes, these data show that additional information accounts for
With the byte number behind compressed content district in content regions；
Content regions: the content of storage e-book, at least includes herein below:
Book.snbf, the summary info of storage e-book, summary info comprises the coding of book, front cover, language, distribution
Business, producer, establishment time；
Toc.snbf, the special topic division of storage e-book, the information of storage comprises the name of special topic, the chapter that describes and comprise
Joint list；
Toc_content.snbf, the Chapter List information of storage e-book, Chapter List information spinner volume information to be comprised,
Section name and Chapter List；
Chapter.snbc, the content of storage one chapters and sections of e-book.
2. SNB e-book storage organization as claimed in claim 1, is characterized in that: described additional information is SNB electronics
The control information of book storage organization, encryption method, encryption key and the encryption used including at least e-book storage organization
The section beginning in content regions, the side-play amount of end.
3. SNB e-book storage organization as claimed in claim 1, is characterized in that: described SNB e-book storage organization
The compression algorithm used is BZIP2 compression algorithm or GZIP compression algorithm.
4. SNB e-book storage organization as claimed in claim 1, is characterized in that: described uncompressed content is e-book
Free chapters and sections.
5. SNB e-book storage organization as claimed in claim 1, is characterized in that: described compressed content is e-book
Charge chapters and sections.
6. a wiring method for SNB e-book storage organization as claimed in claim 1, is characterized in that, including following step
Rapid:
1) e-book logical file is created: summary file, index file and content file；
Summary file: at least include: version, author, language, title, publisher, making side's information；
Index file: the e-book logical partitioning rule that storage is preset；
Content file: the content of storage one chapters and sections of e-book；
2) write SNB e-book storage organization；
A: obtain the content information of e-book；
B: obtain the index information of e-book；
C: content information and the index information of book are divided into different sections according to fixing byte length；
D: will whether encrypt the 1st～the 4th byte indicating position write SNB e-book storage organization；
The code name of compression algorithm is write the 5th～the 8th byte of SNB e-book storage organization；
E: chopping rule is write the 9th～the 12nd byte of SNB e-book storage organization；
The the 13rd～the 16th byte by metadata quantity write SNB e-book storage organization；
The the 17th～the 20th byte by the meta-data region side-play amount write SNB e-book storage organization in content regions；
Quantity of documents is written to the 21st～the 24th byte of SNB e-book storage organization；
The the 25th～the 28th byte by the directory area side-play amount write SNB e-book storage organization in content regions；
Compression directory area is taken up room and writes the 29th～the 32nd byte of SNB e-book storage organization；
The the 33rd～the 36th byte by the uncompressed content side-play amount write SNB e-book storage organization in content regions；
The the 37th～the 40th byte by the compressed content side-play amount write SNB e-book storage organization in content regions；
The the 41st～the 44th byte by the additional information region side-play amount write SNB e-book storage organization in content regions；
F: start to write successively the metadata information of e-book, catalogue from the 45th byte of SNB e-book storage organization
District's information, uncompressed content information, compressed content information and additional content information.
7. a read method for SNB e-book storage organization as claimed in claim 1, is characterized in that, including following step
Rapid:
A) resolve the header file district of SNB e-book storage organization, judge SNB e-book according to the numerical value of the 1st～the 4th byte
Whether storage content encrypts, and judges the compression algorithm of SNB e-book storage content according to the numerical value of the 5th～the 8th byte；
B) control zone of SNB e-book storage organization is resolved；
Chopping rule is obtained by the numerical value of the 9th～the 12nd byte storage；
Metadata quantity is obtained by the numerical value of the 13rd～the 16th byte storage；
The position in content regions, the meta-data region is obtained by the numerical value of the 17th～the 20th byte storage；
Quantity of documents is obtained by the numerical value of the 21st～the 24th byte storage；
The position in content regions, the directory area is obtained by the numerical value of the 25th～the 28th byte storage；
Taking up room of compression directory area is obtained by the numerical value of the 29th～the 32nd byte storage；
The uncompressed content position in content regions is obtained by the numerical value of the 33rd～the 36th byte storage；
The compressed content position in content regions is obtained by the numerical value of the 37th～the 40th byte storage；
The position in content regions, the additional information region is obtained by the numerical value of the 41st～the 44th byte storage；
C) resolve metadata, obtain the numerical value O of content-control district the 17th～the 20th byte, then from the 45th byte～45+O
Byte is meta-data region；The form of meta-data region is length+content, first obtains the 1st～the 4th byte of meta-data region, so
Numerical values recited according to these 4 bytes obtains the content of metadata afterwards, repeats this step and obtains multiple metadata；
D) resolve directory area, obtain the numerical value P of content-control district the 25th～the 28th byte, then from 45+O byte～the
45+O+P byte is directory area；Take up room inconsistent if directory area takes up room and compresses directory area, according to the 5th～
The compression algorithm code name of the 8th byte storage calls the compression algorithm of response to decompress directory area；
E) content regions is resolved；
Resolve uncompressed content regions, obtain the numerical value Q of content-control district the 33rd～the 36th byte, then 45+O+P byte～
45+O+P+Q byte is uncompressed content regions, reads this part and obtains uncompressed content, then according to the 9th～the 12nd
The chopping rule of byte storage splits into multiple chapters and sections；
Resolve compressed content district, obtain the numerical value R of content-control district the 37th～the 40th byte, then 45+O+P+Q byte～
45+O+P+Q+R byte is compressed content district, finds out corresponding decompression according to the compression algorithm code name of header file storage
Algorithm decompresses the contents of the section；
Resolve additional information region, obtain the numerical value S of content-control district the 41st～the 44th byte, 45+O+P+Q+R byte～
45+O+P+Q+R+S byte is additional information region；Obtain this partial bytes record encryption method, key length and
The beginning of encrypted section, the side-play amount of end, be split as chapters and sections according to chopping rule.
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| CN109074124A (en) * | 2017-01-26 | 2018-12-21 | 华为技术有限公司 | The method and mobile device of data processing |
| CN111488727A (en) * | 2020-03-24 | 2020-08-04 | 南阳柯丽尔科技有限公司 | Word file parsing method, word file parsing apparatus, and computer-readable storage medium |
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