JP2003330915A - Stylesheet processing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems that complicated determination of an order of priority is required depending on a description pattern, and a problem such as decrease of a processing speed in obtaining style information in carrying out display or print is apprehended, in processing a style sheet described in a stylesheet language for expressing a presentation style of contents of a document. <P>SOLUTION: Style information of the analysis result of the style sheet is controlled with a single table instead of tables for respective authors. A priority order level by including respective pieces of information such as the level of importance, a sheet value, limitation and an import order level in each style piece of information is calculated and kept. When the style information is acquired in executing display or print, the process can be simplified and accelerated by comparison of the priority order levels. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a style sheet processing device for processing and searching a style sheet defining a presentation style of a document.

[0002]

2. Description of the Related Art In recent years, along with the development of Web technology, services using the Internet are rapidly spreading.
Currently, the data of documents managed on the Web on the Internet is HTML (Hyper Text Mar).
Most of the contents are described in kup Language). When this content is processed by a device that displays or prints, each device determines a presentation style such as a tag or a character string described in the content and displays or prints it. However, when the same content is processed by different devices, there arises an adverse effect such as different expression. Therefore, apart from HTML which is the content description language of the document, CSS (Cascading STYL) is used as a style sheet language for describing the presentation style of the document.
E Sheets) was devised. CSS is 199
6 years W3C (World Wide Web Cons)
ortium) CSS2 that was established as a recommendation and then included a style specification function for XML documents.
(Cascading STYLE Sheets, L
level 2) has been established. In addition, CSS and CS
In addition to S2, XSLT established as a W3C recommendation
(Extensible Style Language
e Transformations), XSL
In T, it is possible to define a presentation style for documents described by user-defined elements other than HTML documents.

CSS2 is a style sheet language that makes it possible to describe the presentation style (for example, font, character size / color, etc.) of a document as a structured document. By separating the presentation style of the document from the content of the document, it is possible to simplify web authoring and site maintenance.

In CSS2, a presentation style of a document is designated by a style sheet described based on a grammar standardized in advance. In this style sheet description, a rule set describing specific style information is specified and the importance is specified! import
It is possible to describe ant, description of @import that specifies import of external style sheet, etc. Furthermore, these style sheets can be described in User / Author / Def.
It is possible to make a cascade for each author such as “ault”. These description methods will be specifically described below.

First, the description of the rule set will be described. In CSS2, the definition of the presentation style is described by a rule set that is a combination of a selector and a declaration part. The selector designates a target element in the content to which the presentation style is applied, and its description is described in various patterns (universal selector [*], type selector [E], ID selector [E]. #Myid] etc. are prepared, and it is possible to deal with documents having a complicated tree structure. The declaration part specifies a style to be applied to the element specified by the selector, and its description is based on the combination of the property name and the property value as shown in FIG.

For example, the name 208 of the font family
In the designation of, when it is desired to apply a common font family called sans-serif to all elements of the content of the document, and when want to apply fantasy to the font family of the H1 element, the following designation is performed.

* {Font-family: san
s-serif;} H1 {font-family: fantas
y;} In the first rule set of the above examples, the universal selector 1 representing all elements as the selector pattern
01 is used to specify font-family property name font-family208 and its property value sans-serif as the declaration part. In the second rule set, the type selector 102 representing the H1 element is used as the selector pattern, and the declaration part fo, which is the property name of the font family, is used.
nt-family 208 and its property value f
"antassy" is specified.

In the first rule set, the universal selector 10 that represents all elements as a selector pattern.
Since 1 is used, the font family of all elements including the H1 element means that the specified sans-serif is applied. In the second rule set,
Since the type selector 102 representing the H1 element is used as the selector pattern, the font family of the H1 element means that the specified fantasy is applied.

When a style sheet including both the first rule set and the second rule set is designated as the presentation style for the content of the same document, the font families of H1 are duplicated.

As described above, depending on the method of designating the selector pattern, the designation of the element to which the presentation style is applied may be duplicated.
In 2, the priorities among the patterns are arranged. As a result, in the above example, since the type selector 102 has a higher priority than the universal selector 101, the font family of the H1 element finally determined is fanta.
It becomes sy.

Next, the style sheet cascade will be described. The presentation style of a document is specified by the author who created the content of the document (hereinafter referred to as Author) and the user who displays the content of the document (hereinafter described as User).
(For example, by changing the setting of the display tool such as a browser) and as the default of the display tool (hereinafter, referred to as Default) can be considered. These designations are assumed to be designations in one form such as Author only, or designations in combination of a plurality of forms such as Author and User, and there are forms other than the above three depending on the display form of the document. However, specification by a combination including them is also assumed.

For example, a case will be described in which the designation of the Author and the designation of the User include the following rule set designations, respectively.

H1 {font-family: fa
ntasy;} H1 {font-family: cursiv
e;} In the first rule set of the above examples, the type selector 102 representing the element of H1 is used as the selector pattern, and the font family property name font-family207 and its property value are used as the declaration part. "Fantasy" is specified. In the second rule set, the type selector 102 representing the H1 element is used as the selector pattern, and the font-family property name, font-fami, is used as the declaration part.
ly207 and its property value, cursive, are specified.

In the first rule set, since the type selector 102 representing the HI element is used as the selector pattern, it means that the specified fantasy is applied to the font family of the H1 element. In the second rule set, since the type selector 102 representing the element of H1 is used as the selector pattern, H1
The font family of the element is the specified cursive
Means that applies.

When both the author style sheet including the first rule set and the User style sheet including the second rule set are designated as the presentation style for the content of the same document, the designation of the font family of H1 is made. It will overlap.

As described above, depending on the combination of style sheets of a plurality of forms, the designation of the element to which the presentation style is applied overlaps. Therefore, in CSS2, the priority order among the style sheets of each form is determined. There is. As a result, in the above example, Use
Since Author has a higher priority than r, the font family of the H1 element that is finally determined is fanta.
It becomes sy.

Next, the degree of importance is designated! import
The ant will be described. As mentioned above, the priority order between the Author and User style sheets is User.
Auth has a higher priority than Auth. But like this! It is possible to reverse the rules of this cascade by applying the rules of important.

For example, a case will be described in which the following description is made in each style sheet of Author and User.

H1 {font-family: fa
ntasy;} H1 {font-family: cursive
!! important;} In the first rule set of the above examples, the type selector 102 that represents the element of H1 is used as the selector pattern, and the font family property name “font-family” 207 and its property value are used as the declaration part. "Fantasy" is specified. In the second rule set, the type selector 102 representing the H1 element is used as the selector pattern, and the font-family property name, font-fami, is used as the declaration part.
ly207 and its property value, cursive, are specified.

In the first rule set, since the type selector 102 representing the HI element is used as the selector pattern, the font family of the H1 element means that the specified fantasy is applied. In the second rule set, since the type selector 102 representing the element of H1 is used as the selector pattern, H1
The font family of the element is the specified cursive
Means that applies.

When both the Author style sheet including the first rule set and the User style sheet including the second rule set are designated as the presentation style for the content of the same document, the designation of the font family of H1 is made. Although it will be duplicated, Author's style sheet is Use
Since the priority is higher than that of the r style sheet, the specified fantasy is applied to the font family of the H1 element. But as described in the second ruleset! When the important is designated, the priority order between the style sheets is reversed, and the designated cursive is applied to the font family of the H1 element.

Next, @impor which is a specification for importing an external style sheet in the style sheet
t will be described. Author / User / Def
In each of the default style sheets, the description of the rule set may be divided into a plurality of style sheets and described, and in one style sheet, another style sheet may be imported and referred to.

For example, a case where the following description is included in the author style sheet will be described.

@Import "mystyle.cs"
s "@import url {" mystyle. cs
s ″} In the first description of the above example, the external file mystyle.css is imported as the author's style sheet and is designated to be applied as a rule set. The second description is the URL designation of the external file. It is the same as the first description, except that it can be described in step 1. In this way, when an external file is imported by specifying @import, the description of the rule set on the importing side and the description of the rule set on the importing side are There is a possibility of duplication, and in such cases, it is agreed that the description on the importing side will take precedence.

In the device for displaying and printing, the style sheet described by the above-described description method is analyzed and the described information is saved as rule set information.
This ruleset information is searched and displayed or printed.

FIG. 3 shows the structure of an example of a conventional style sheet processing apparatus, which processes a style sheet described in CSS2 as a presentation style applied to the contents of a document. A conventional style sheet processing device is an Author / User / Default.
Style sheet input means 30 for inputting a style sheet identifier representing one of the style sheet forms
1. Style sheet analysis means 3 for analyzing the style sheet input by the style sheet input means 301
02, a style sheet type determination unit 303 that determines the style sheet type from the style sheet identifier input by the style sheet input unit 301, and a style sheet analysis unit 302 that analyzes the style sheet,
Rule set information is created, and based on the judgment by the style sheet type judging means 303, the Author rule set table 305 / User rule set table 3
Rule set information creating means 304 for registering rule set information in any of the rule set tables of the 06 / Default rule set table 307, an element to which the presentation style of the content is applied in the process of displaying or printing the content of the document Information acquisition means 311 for designating the element information and the style information storage destination address for acquiring the style information of the user, the Author rule set table 305 / User rule set table 306 / De
Rule set search means 30 for searching all the rule set tables of the fault rule set table 307
8. Duplication check means 30 for checking duplication of style information retrieved by the rule set retrieval means 308
9. If there is an overlap, the priority determination means 310 determines which style information to apply.

[0027]

As described above, when processing a style sheet describing the presentation style of a document, the rule set information creating means 304 creates the style sheet in the conventional style sheet processing as shown in FIG. Since the rule set information is stored in the rule set table that is different for each author, the rule set search means 308 switches the rule set table when acquiring the presentation style applied to the content of the document at the time of displaying or printing. Since it has to be searched, there was a concern that the processing speed would be reduced.

The rule set information created by the rule set information creating means 304 is the author rule set table 305 / User rule set table 30.
6 / Default rule set table 307 does not include information indicating which form was described in the style sheet input, so the duplication checking unit 309 checks whether there is duplicate style information, If they overlap, priority determination means 31
Since the priority of each form must be determined with 0 to determine the style information, there was a concern that the processing speed would be reduced.

The rule set information created by the rule set information creating means 304 is! Since it does not include the information indicating the inversion of the priority of Author and User when specified by important, when acquiring the presentation style to be applied to the content of the document at the time of display or printing, Author and User are used.
There was a problem that it was not possible to make a judgment by reversing the priority order of.

Further, since the rule set information created by the rule set information creating means 304 does not include the information indicating the correlation between the importing side and the importing side when @import is used, display or printing is performed. In this case, when acquiring the presentation style applied to the content of the document, there is a problem that the priority order cannot be determined based on the correlation between the importing side and the importing side.

An Author rule set table 305 / User rule set table 306 / Default rule set table 307 in which the rule set information created by the rule set information creating means 304 is registered.
Since each rule set table of is registered in the order in which the rule set information is registered or in an indeterminate order,
When searching by the rule set search means 308, it is necessary to search all the rule set information and determine the style information, which has been a concern that the processing speed may be reduced.

Although the style sheet description methods have been described above individually, these description methods have mutual priorities, and the correlation between them is the import order degree <limitation degree <sheet value < The priority increases in the order of importance. Therefore, since the priority determination means 310 has to make a determination based on these correlations, there is a concern that the processing speed may decrease due to complicated processing.

The present invention has been proposed in view of the above circumstances, and when the style sheet processing is performed by the client, it is necessary to determine a complicated priority order, and it is necessary to perform a display or a printing. The present invention relates to a method for holding and managing necessary information for solving the problem of a reduction in processing speed in the process of acquiring a presentation style applied to the content of a document.

[0034]

A first aspect of the present invention is a style sheet processing apparatus that processes a style sheet described in a language that defines a presentation style when displaying or printing a structured document. A style sheet input means for inputting a sheet, a style sheet analysis means for analyzing the style sheet input by the style sheet input means, and a limit degree corresponding to the type of selector when the selector is detected by the style sheet analysis means. A delimiter determining unit that determines a property name and a property value when the declarative unit is detected by the style sheet analyzing unit, and a property name and a property value that are extracted by the declarative unit extracting unit. Property information is generated based on the above, and determined by the above-mentioned limit determination means. The rule set information is generated by associating the limited degree with the priority degree as the priority degree, and the rule set information creating means for registering in the rule set table, and the style information for retrieving the style information by searching the rule set information in the rule set table And an acquisition unit.

According to a second aspect of the present invention, in the first aspect, a sheet value determining means for determining a sheet value assigned to each author in a style sheet to be analyzed is provided, and the sheet value is included in the priority level. Characterize.

A third aspect of the present invention is the first aspect of the present invention, further comprising an importance degree determining means for determining an importance degree when the declaration portion extracting means detects an important designation in the declaration portion, and the priority degree is set to the above. It is characterized by including importance.

In a fourth aspect based on the first aspect, there is provided an import ranking degree determining means for determining an import ranking degree when the style sheet analyzing means detects an import designation, and the priority ranking degree has an import ranking degree. It is characterized by including.

A fifth aspect of the present invention is the rule set table sorting means according to the first aspect, which sorts the rule set table created by the rule set information creating means in descending order based on the priority of the rule set information. It is characterized by being provided.

[0039]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 4 is a block diagram of a style sheet processing apparatus according to an embodiment of the present invention.

As shown in FIG. 4, the style sheet processing apparatus analyzes the style sheet input means 401 for inputting the style sheet together with the identifier indicating the form, and the style sheet input by the style sheet input means 401. For analyzing the style sheet by the style sheet analyzing means 402, a sheet value determining means 410 for determining a sheet value from the style of the input style sheet, and a style by the style sheet analyzing means 402. When analyzing the sheet,
Selector extraction means 4 for extracting the selector of the rule set
03 and the degree-of-limitation determining unit 40 that determines the degree of restriction based on the description pattern of the selector extracted by the selector extracting unit 403.
4. Declaration part extraction means 405 for extracting the declaration part of the rule set when the style sheet analysis means 403 analyzes the style sheet, and the style sheet analysis means 40
When you analyze the style sheet in 2, specify important (! Im
If there is a "portant", an important designation extraction unit 406 that extracts the important designation, an importance determination unit 407 that determines the importance based on the importance designation extracted by the important designation extraction unit 406, and a style by the style sheet analysis unit 402 When you analyze a sheet, specify import (@impo
rt), the import designation extracting unit 408 and the import designation extracting unit 40 that extract the import designation
Import rank degree determining means 409 for determining the import rank degree based on the import designation extracted in 8, and rule set information creating means 411 for generating rule set information based on the information analyzed by the style sheet analyzing means 402.
And the rule set table 413 for storing the rule set information created by the rule set information creating unit 411, and the rule set table 413 in descending order. Rule set table sorting means 414 for sorting into, the style information acquisition means 416 for acquiring the presentation style applied to the content of the document at the time of display or printing, and the conditions specified by the style information acquisition means 416. A rule set search means 415 for searching the rule set table 413 based on the rule set table 413, and a style information creation means 417 for creating style information based on the property information acquired by the rule set search means 415.

First, the procedure for analyzing the style sheet and creating the rule set information will be described.

First, the style sheet is Author / U
It is input by the style sheet input unit 401 together with the style type of ser / Default. The style sheet input means 401 performs initialization processing (S101 to S102) of in-apparatus data for processing the style sheet input as shown in FIG.

The input style sheet is analyzed by the style sheet analysis means 402, and the processing is sorted according to the description content. The processing contents of the style sheet analysis unit 402 are shown in steps S301 to S312 of FIG. In S301, the sheet value determination means 410 is set to Auto.
The style sheet type of hor / User / Default is notified, and the corresponding sheet value (FIG. 5) is determined (steps S401 to S409 in FIG. 14). In this embodiment,
The value of the style sheet type used in this case is 5 in FIG.
Although the same value as the sheet value shown in 01 to 503 is used, any value may be used as long as the type can be identified.

In S302, the character string token is cut out, and when it is determined that the token is the selector (S30
3), the selector extraction means 403 is notified of the character string, and the limitation degree determining means 404 calculates the limitation degree (step S in FIG. 16).
601 to S602) are performed. At this time, the degree of limitation calculated by the degree-of-limitation determining means 404 is a value as indicated by 101 to 106 in FIG.

When the token is judged to be the declaration section (S3
04), S701 of FIG. 17 by the declarative part extraction means 405.
The property name and the property value are extracted and stored in the procedure of steps S709 to S709. Also, in the declaration section! When the important designation of important is included, the important designation extraction means 406
Request processing, and the importance determining means 407 executes the steps S901 to S907 of FIG. 19 to the steps 701 to 703 of FIG.
The importance is calculated as shown in.

When it is determined that the token is the import designation of @import, the import designation extraction unit 408 determines the import ranking degree by the procedure of S1001 to S1003 of FIG. The processing at that time is performed by the import ranking degree determining unit 409 in steps S1101 to S11 of FIG.
02. The import rank calculated at this time will be described with reference to FIG. As shown in the style sheet import example of FIG. 6A, the style sheet 1 (602) and the style sheet 3 (604) are linked in order in the document content 601 and the style sheet 1 (602) is used in the style sheet 2 ( 603) is imported, the respective import rank degrees of style sheet 1 to style sheet 3 have values as shown in FIG. 6B.

When the selector, declaration section, and import designation processing as described above are completed, the rule set information creating means 411 causes S1201 to S1205 in FIG.
The rule set information is registered in the rule set table 413 according to the procedure. The rule set information created at this time will be described with reference to FIG.

As shown in FIG. 8, the rule set table 801 is composed of a plurality of rule set information 802,
Each rule set information 802 is link information 804
Are linked to each other by a pointer 810 to the previous rule set information and a pointer 811 to the subsequent rule set information, and the relative position of each rule set information can be changed. The rule set information 802 is composed of property information 803 for storing the property information described in the declaration part and a priority level 805. The property information 803 includes an offset position 806 of the property name character string, an offset position 807 of the property value character string, and a pointer 808 to the next property information. At the offset position 806 of the property name character string in this case, the declarative part extraction means 405 performs the procedure S7.
After saving the property name character string saved by 06 in the character string buffer 809, its offset position is set. Similarly, the offset value of the property value string is 8
In 07, the offset value is set after the property value character string stored in step S708 is stored in the character string buffer 809. The priority level 805 is a value represented by 2 bits of the above-described importance level (701 to 703 in FIG. 7) and a sheet value (501 to 503 in FIG. 5) according to the procedure shown in S1301 to S1305 in FIG. A value represented by 2 bits, a limit degree (101 to 106 in FIG. 1) represented by 10 bits, and an import rank degree (see FIG. 6).
It is a value expressed by 16 bits in total, which is composed of a value expressed by 2 bits of (605) to (607) of (a).
The configuration position of each value in 16 bits is of importance 8 from the MSB.
12, the sheet value 813, the limit degree 814, and the import order degree 815 are arranged in this order to obtain the priority order 805.
Value represents the priority order of importance> sheet value>limitation> import rank. In the present embodiment, the priority level 805 is composed of 16 bits, but the number of bits can be increased. In that case, the number of bits of each of the sheet value 813, the limit degree 814, and the import rank degree 815 can be increased. When the sheet value 813 is increased, the style sheet form and the limit degree that can be processed by the style sheet processing apparatus can be increased. When the number of 814 is increased, the pattern of the selector that can be processed by the same device, the import rank degree 81
When the number is increased to 5, the number of style sheets that can be linked from the content of the document can be increased.

After all the rule sets described in the style sheet are repeatedly analyzed and registered with the rule set information 802 in the rule set table 413, the rule set table sorting means 4 is executed.
The rule set information 802 is sorted according to 14. The sorting is performed by the priority level 805 in the rule set information 802.
Based on, sort in descending order. In this embodiment, quick sort which is generally used as a sorting algorithm is adopted, but other sorts of algorithms can be used. As a result of sorting, rule set information 802
Has the highest priority ruleset at the top,
After that, they are arranged in descending order of priority.

Next, a procedure for acquiring the presentation style of a document when displaying or printing will be described.

In the style information acquisition means 416, the element information as shown in FIG. 9 and the storage destination address of the style information as shown in FIG. 10 are designated, and S1401 to S1 in FIG.
The style information is acquired by the procedure shown in 411.

The contents of the element information and style information will be described with reference to FIGS. 9 and 10.

The element information 901 shown in FIG. 9A is the element name 902, the element attribute information 903, and the pseudo selector information 9.
It is composed of 04. The element name 902 represents the name of the element described in the content of the document, and the element attribute information 903 represents the attribute name 90 representing the name of the attribute associated with the element.
5, an attribute value 906 representing the value of the attribute, and a pointer 907 to the next attribute information. Pseudo selector information 904
Is information indicating the type of the pseudo selector having values such as 908 to 910 in FIG. 9B.

The style information 1001 shown in FIG. 10 is composed of respective areas 1002 to 1016 for acquiring and storing the property value of each property name shown in FIG. Note that the number of types of property values to be acquired can be increased by increasing the area of the style information 1001.

The style information acquisition means 416 selects a property name to be acquired from the beginning of the style information 1001 and specifies the selected property name and element information 901 to perform a rule set search process (step S1406). When the property value corresponding to the property name can be acquired as a result of the search, style information creation processing is performed to save the property value as the style information (step S1410). The style information acquisition unit 416 can acquire style information by repeating these processes for all properties of the style information 1001.

Rule set search processing (step S140)
The content of 6) will be described in more detail. The contents of the rule set search process (step S1406) are described in step S1 of FIG.
501 to S1511. First, the leading rule set information 802 registered in the rule set table 413 is acquired, and the limit level 814 in the priority level 805 of the rule set information 802 is compared with the designated element information 901. If they match, it is checked whether the specified property name is included in the rule set information. If it is included, the address of the property value corresponding to the property name is acquired and saved. If they do not match, the next rule set information 802 is acquired from the rule set table 413,
The same comparison as above is performed, and the processing is repeated until all the rule set information 802 in the rule set table 413 has been searched. In the above comparison of the degree of limitation 814 and the element information 901, for example, when the degree of limitation is 1, it represents a type selector. Therefore, it is compared with the element name 902 of the element information 901, and when the degree of limitation is 5, link: In order to represent a pseudo selector or: visited pseudo selector, the element information 901 is compared with the pseudo selector information 904.
Such processing is performed.

The important points in this rule set search processing are the limit 814 and the element information 901 in the priority 805.
That is, the rule set information that matches first in the comparison is the highest priority rule set information to be acquired.
That is, since the rule set table 413 is arranged in the order of priority by the rule set table sorting means 414 described above, if there is a match, there is no need to search the corresponding rule set information and thereafter, so that all rules set table 413 can be used. Compared with the method of searching the rule set information, the processing can be simplified and speeded up. Even when the rule set table sorting means 414 of the present invention is not provided, the priority order between the rule set information in the rule set table 413 can be determined by a simple comparison of the priority levels included in the rule set information. There is no need to perform a complicated priority order determination as in the past, and the processing can be simplified and speeded up.

[0059]

As described above, according to the present invention, the rule set information created by the rule set information creating means 411 is stored in one rule set table 413 instead of being stored in a different rule set table for each author. As a result, when acquiring the presentation style applied to the content of the document at the time of displaying or printing, the rule set searching unit 415 only needs to search one rule set table 413, which simplifies and speeds up the process. The effect that it becomes possible is obtained.

The rule set information created by the rule set information creating means 411 is the sheet value determining means 410.
Author / User / Default determined by
A presentation that is applied to the content of a document when it is displayed or printed because it has a priority 805 that includes a sheet value (Fig. 5) that indicates which form of t was described in the input style sheet. When the style is acquired, the style information can be determined by comparing the priority levels 805, so that the processing can be simplified and speeded up.

Further, since the priority level 805 includes the importance level (FIG. 7) determined by the importance level determining means 407 when the priority level is specified by the importance level specification, the priority level of the document is displayed or printed. When the presentation style to be applied to the content is acquired, the style information can be determined by comparing the priority levels 805, so that the processing can be simplified and speeded up.

Further, since the priority level 805 includes the import level (FIG. 6B) determined by the import level determining means 409 when it is designated by the import specification, it is displayed or printed. When acquiring the presentation style to be applied to the content of the document, it is possible to determine the style information by comparing the priority levels 805, so that the processing can be simplified and speeded up. To be

The rule set table 413 for registering the rule set information created by the rule set information creating means 411 is the rule set table sorting means 414.
By sorting the priority order 805 in descending order, it is possible to simplify and speed up the process when acquiring the presentation style applied to the content of the document at the time of displaying or printing.

[Brief description of drawings]

FIG. 1 is a diagram showing a pattern example of a selector.

FIG. 2 is a diagram showing an example of property names and property values.

FIG. 3 is a configuration diagram showing a conventional style sheet processing example.

FIG. 4 is a configuration diagram showing a style sheet processing apparatus of the present invention.

FIG. 5 is a diagram showing types of style sheets of the present invention and sheet values thereof.

FIG. 6 is a diagram showing an example of importing a style sheet and an example of an import ranking degree.

FIG. 7 is a diagram showing a list of the degrees of importance of the present invention.

FIG. 8 is a diagram showing a data structure of a ruleset table of the present invention.

FIG. 9 is a diagram showing a data structure of element information and values of pseudo selector information according to the present invention.

FIG. 10 is a diagram showing a data structure of style information of the present invention.

FIG. 11 is a flowchart showing an initialization process of the present invention.

FIG. 12 is a flowchart showing a style sheet input process of the present invention.

FIG. 13 is a flowchart showing a style sheet analysis process of the present invention.

FIG. 14 is a flowchart showing sheet value determination processing of the present invention.

FIG. 15 is a flowchart showing selector extraction processing of the present invention.

FIG. 16 is a flowchart showing a limitation degree determining process of the present invention.

FIG. 17 is a flowchart showing a declaration part extraction process of the present invention.

FIG. 18 is a flowchart showing an important designation extraction process of the present invention.

FIG. 19 is a flowchart showing an importance degree determination process of the present invention.

FIG. 20 is a flowchart showing an import designation extraction process of the present invention.

FIG. 21 is a flowchart showing an import ranking degree determination process of the present invention.

FIG. 22 is a flowchart showing a rule set information creation process of the present invention.

FIG. 23 is a flowchart showing a priority level determination process of the present invention.

FIG. 24 is a flowchart showing a style information acquisition process of the present invention.

FIG. 25 is a flowchart showing a rule set search process of the present invention.

FIG. 26 is a flowchart showing a style information creation process of the present invention.

[Explanation of symbols]

401 Style sheet input method 402 style sheet analysis means 403 selector extraction means 404 Limitation determination means 405 Declaration section extraction means 406 important designation extraction means 407 Importance determination means 408 Import designation extraction means 409 Import ranking degree determining means 410 sheet value determining means 411 Rule set information creation means 412 priority level determination means 413 rule set table 414 Rule Set Table Sorting Means 415 Rule set search means 416 Style information acquisition means 417 Style information creation means 801 rule set table 802 Rule set information 803 Property information 804 Link information 805 Priority 806 Offset position of property name character string 807 Offset position of property value character string 808 Pointer to the next property information 809 string buffer 810 Pointer to the previous ruleset information Pointer to the rule set information after 811 812 Importance 813 sheet value 814 Limited 815 Import rank degree

Claims (5)

[Claims] 1. A style sheet processing device for processing a style sheet described in a language that defines a presentation style when displaying or printing a structured document, and a style sheet input means for inputting a style sheet, A style sheet analysis means for analyzing the style sheet input by the style sheet input means; and a limitation degree determination means for determining a limitation degree corresponding to the type of the selector when the style sheet analysis means detects a selector, The declarative part extracting means for extracting the property name and the property value when the declarative part is detected by the style sheet analyzing means, and the property information is generated based on the property name and the property value extracted by the declarative part extracting means. The degree of limitation determined by the degree-of-limitation determination means is taken as the priority degree. It is characterized by comprising rule set information creating means for associating rule set information and registering it in the rule set table, and style information acquiring means for searching the rule set information in the rule set table and acquiring style information. Style sheet processing equipment. 2. The style sheet processing apparatus, further comprising a sheet value determining means for determining a sheet value assigned to each author in a style sheet to be analyzed, and the priority level includes the sheet value. The style sheet processing apparatus according to claim 1. 3. The style sheet processing apparatus further comprises importance determining means for determining importance when the declaration part extracting means detects an importance designation in the declaration part, and the priority is assigned to the importance. Claim 1 characterized by including.
Alternatively, the style sheet processing apparatus according to claim 2. 4. The style sheet processing apparatus further comprises an import ranking degree determining means for determining an import ranking degree when the style sheet analyzing means detects an import designation, and the priority ranking includes the import ranking degree. The style sheet processing apparatus according to any one of claims 1 to 3, wherein 5. The style sheet processing apparatus further comprises rule set table sorting means for sorting the rule set table created by the rule set information creating means in descending order based on the priority of the rule set information. The style sheet processing apparatus according to any one of claims 1 to 4, which is characterized.