JP2016170592A - Program, content analyzer, and content analyzing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suitably detect unused ornament control attributes from a content where a static unit content and a dynamic unit content are mixed.SOLUTION: Content analysis is carried out in such a manner that the structure of a structured document and the structure of ornament designation information in a content corresponding to a static unit content and a dynamic unit content constituting the content are analyzed, correspondence is specified between an element in the analyzed structure of the structured document and ornament control attributes in the structure of the ornament designation information and, based on the result of comparing the ornament control attributes in the structure of the ornament designation information having the correspondence specified with the element in the structure of the structured document with the ornament control attributes in the ornament designation information, unused ornament control attributes not used for any of the static unit content and the dynamic unit content are detected from the ornament control attributes in the ornament designation information.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a program, a content analysis apparatus, and a content analysis method.

Content as a website published on the Internet using the WWW (World Wide Web) system is composed of a set of one or more web pages. The web page is configured by, for example, HTML (HyperText Markup Language). HTML is a markup language that expresses the logical structure of a document with tags.
Such a Web page is subjected to tag interpretation by a rendering engine included in a Web browser which is browsing software, and is rendered on the Web browser.

  CSS (Cascading Style Sheets) is known as one of the languages for defining styles for Web pages described in HTML. The CSS specifies how to decorate each tag constituting the HTML, including layout, font size, color, and the like.

  The Web site has an HTML file corresponding to each of a plurality of Web pages, and a CSS file in which the Web page style is defined by CSS. In addition, the HTML file and the CSS file constituting the Web site are managed under a specific domain name, for example.

  Web pages existing on the same Web site are often decorated in a unified manner from the viewpoint of, for example, ease of viewing. For this reason, the same style is often specified for the same tag used in a plurality of Web pages existing on the same Web site.

In recent years, Web pages held by Web sites are becoming large-scale, and the number of locations that require a uniform style on each Web page is increasing. For this reason, it is generally performed to register possible styles in the CSS file as exhaustive templates.
When the CSS file includes a template as described above, the rendering engine reads all the properties in the CSS file into the memory when drawing the web page. In addition, the rendering engine performs an output process of detecting the style specified for the tag to be processed from the read properties and applying the detected style to the contents of the tag. In this case, a necessary style is detected from CSS information that also includes a lot of useless style information that is not actually used for outputting a Web page, and the processing efficiency decreases.

  Therefore, a configuration is known in which a definition file holding style information necessary for outputting a web page is prepared, and the web page is output using only the style specified based on the definition file (for example, Patent Document 1).

JP 2005-222458 A

  However, in the above configuration, it is necessary to create information that defines a style to be used in advance, and flexibly handle situations where addition, editing, and deletion of multiple Web pages are required as the scale increases. It is difficult to respond.

  In recent years, a maintenance tool having a style editing function is provided as a plug-in function of a Web browser. In the editing function, for example, the value of style information (also referred to as a property) in CSS can be added, changed, or deleted, and the reflection result of the style can be immediately confirmed on the Web browser.

However, in recent Web sites, dynamic Web pages are often used as Web pages in addition to static Web pages. A static Web page is a Web page in which the content transmitted from the Web server to the client is always the same in response to a request from the client. The dynamic web page is a web page that is dynamically generated using a script language such as JavaScript (registered trademark) so as to have contents according to a request from the client.
In a dynamic Web page, a style that is not used in a static Web page may be applied. However, the maintenance tool as described above can detect an unused property corresponding to a static Web page, but cannot detect a property used only on a dynamic Web page. For this reason, there is a possibility that a property used only in the dynamic Web page is detected as an unused property.

  The present invention has been made in view of such circumstances, and it is an object of the present invention to appropriately detect unused decoration control attributes from content in which static unit content and dynamic unit content are mixed. To do.

  In order to solve the above-described problem, according to one aspect of the present invention, the content is configured with respect to content including a structured document and decoration designating information for designating decoration for an element in the structured document. A document analysis step for analyzing the structure of the structured document and the structure of the decoration designating information corresponding to each of the static unit content and the dynamic unit content, and the structured document analyzed by the document analysis step. A correspondence specifying step for specifying a correspondence between an element in the structure and a decoration control attribute in the structure of the decoration designation information, and the correspondence specifying step specifies that there is a correspondence with the element in the structure of the structured document. The decoration control attribute in the structure of the decoration designation information, and the decoration control attribute in the decoration designation information An unused decoration control attribute that detects an unused decoration control attribute that is not used for either static unit content or dynamic unit content from among the decoration control attributes in the decoration designation information based on the comparison result This is a program for executing the detection step.

  One aspect of the present invention is the above-described program, wherein the computer controls the computer to delete all or part of the unused decoration control attributes detected by the unused decoration control attribute detection step from the decoration designation information. This is a program for further executing an attribute deletion step.

  One aspect of the present invention is the above-described program, wherein the decoration control attribute deletion step may delete a description corresponding to an unused decoration control attribute to be deleted in the decoration designation information.

  One aspect of the present invention is the above-described program, wherein the decoration control attribute deletion step includes deletion designation information indicating that an unused decoration control attribute to be deleted is invalid in the decoration designation information. It may be added to the structure.

  One aspect of the present invention is the above-described program, wherein the decoration control attribute deletion step deletes the deletion designation information added to the structure of the decoration designation information, thereby deleting the decoration designation information. The used decoration control attribute may be restored in the decoration designation information.

  One aspect of the present invention is the above-described program, wherein the decoration control attribute deletion step includes an unused decoration control attribute to be deleted from the unused decoration control attributes detected by the unused decoration control attribute detection step. In response to an operation for designating, the designated unused decoration control attribute to be deleted may be deleted from the decoration designation information.

  One aspect of the present invention is the above-described program, wherein the decoration control attribute deletion step detects the unused decoration control attribute detected in response to detection of the unused decoration control attribute by the unused decoration control attribute detection step. May be deleted from the decoration designation information.

  One aspect of the present invention is the above-described program, wherein the decoration control attribute deletion step is based on deletion history information indicating a history of deletion of unused decoration control attributes from the decoration specification information. The unused decoration control attribute deleted from the above may be restored in the decoration designation information.

  One aspect of the present invention is directed to a content including a structured document and decoration designation information that designates decoration for an element in the structured document, and includes static unit content and dynamic unit content constituting the content. A document analysis unit for analyzing the structure of the structured document and the structure of the decoration designation information corresponding to each, elements in the structure of the structured document analyzed by the document analysis unit, and decoration in the structure of the decoration designation information A correspondence relationship identifying unit that identifies a correspondence relationship with a control attribute, and a decoration control attribute in the structure of the decoration designation information that is identified by the correspondence relationship identifying unit as having a correspondence relationship with an element in the structure of the structured document. Based on the result of comparison with the decoration control attribute in the decoration designation information, the decoration control attribute in the decoration designation information A content analysis apparatus and a unused decorative control attribute detector for detecting an unused decorative control attribute not being used in any of the static unit content and dynamic content unit.

  One aspect of the present invention is directed to a content including a structured document and decoration designation information that designates decoration for an element in the structured document, and includes static unit content and dynamic unit content constituting the content. A document analysis step for analyzing the structure of the structured document and the structure of the decoration designation information corresponding to each, elements in the structure of the structured document analyzed by the document analysis step, and decoration in the structure of the decoration designation information A correspondence specifying step for specifying a correspondence relationship with the control attribute, and a decoration control attribute in the structure of the decoration designation information identified by the correspondence specifying step as having a correspondence relationship with an element in the structure of the structured document, , Based on the result of comparison with the decoration control attribute in the decoration designation information, From among the decorative control attribute that is a content analysis method comprising the unused decorative control attribute detection step of detecting an unused decorative control attribute not being used in any of the static unit content and dynamic content unit.

  As described above, according to the present invention, it is possible to appropriately detect unused decoration control attributes from content in which static unit content and dynamic unit content are mixed.

It is a figure which shows the installation environment example of the content analysis apparatus in 1st Embodiment. It is a figure which shows the structural example of the web content in 1st Embodiment. It is a figure which shows the structural example of the content analysis apparatus in 1st Embodiment. It is a figure which shows the structural example of the document analysis part in 1st Embodiment. It is a figure which shows the structural example of the corresponding relationship specific | specification part in 1st Embodiment. It is a figure which shows an example of the correspondence list in 1st Embodiment. It is a figure which shows the structural example of the unused property detection part in 1st Embodiment. It is a figure which shows the structural example of the property deletion part in 1st Embodiment. It is a figure which shows an example of the property edit screen in 1st Embodiment. It is a flowchart which shows the example of a process sequence which the content analysis apparatus in 1st Embodiment performs. It is a figure which shows an example of the property edit screen in 2nd Embodiment. It is a figure which shows an example of the property edit screen in 2nd Embodiment. It is a flowchart which shows the example of a process sequence which the content analysis apparatus in 2nd Embodiment performs. It is a flowchart which shows the example of a process sequence which the content analysis apparatus in 3rd Embodiment performs. It is a figure which shows the structural example of the content analysis apparatus in 4th Embodiment. It is a flowchart which shows the example of a process sequence which the content analysis apparatus in 4th Embodiment performs.

<First Embodiment>
[Example of installation environment for content analyzer]
FIG. 1 shows an installation environment example of the content analysis apparatus 100 according to the present embodiment. As shown in the figure, the content analysis apparatus 100 of the present embodiment is connected to a Web server 200 via a network 300. The network 300 is, for example, the Internet or a LAN (Local Area Network).
The web server 200 stores web content 400 (an example of content). The web server 200 is a server that publishes a website constructed by the web content 400.

FIG. 2 shows an example of the structure of the Web content 400. The Web content 400 shown in the figure includes an HTML file 401, a CSS file 402, and a JavaScript file 403.
The HTML file 401 is a document file described in HTML (HyperText Markup Language) which is a markup language. The HTML file 401 is a file formed by a text document and information defining a document structure. The document structure in the HTML file 401 is defined by defining elements (nodes) forming the document as tags. A document in which a document structure is defined like the HTML file 401 is also called a structured document.

  Note that the structured document included in the Web content 400 is not limited to the HTML file 401. For example, the structured document includes other markup languages such as XML (Extensible Markup Language) and SGML (Standard Generalized Markup Language). It may be a described file.

The CSS file 402 is information (an example of decoration designation information) for designating decoration (style) for elements described in the HTML file 401. Specifically, the CSS file 402 is described according to CSS (Cascading Style Sheets) which is one of style sheets for controlling the display format in a structured document or the like.
The decoration designation information is not limited to the CSS file 402 but may be other style sheets.

The JavaScript file 403 is information that gives a dynamic function to the reproduction of the HTML file 401. A file of a program described by JavaScript (registered trademark).
A static state is expressed by the HTML file 401. In addition, by including the JavaScript file 403 as in the Web content 400 of the present embodiment, dynamic functions such as movement and interactivity can be given to the content mode obtained by playing back the HTML file 401. .

In other words, the Web content in the present embodiment is a static Web page (an example of static unit content) output by the HTML file 401 and the CSS file 402 as the Web page (unit content), and the HTML file 401 and the CSS file 402. And a dynamic Web page (an example of dynamic unit content) output by the JavaScript file 403.
Here, the static Web page is a Web page in which the content transmitted from the Web server 200 to the client is always the same in response to a request from the client. Such a Web page is reproduced by an HTML file 401 and a CSS file 402.
On the other hand, the dynamic web page is a web page that is dynamically generated so as to have contents according to a request from a client. In the present embodiment, the dynamic Web page is generated by JavaScript. When JavaScript generates a dynamic Web page, CSS properties (an example of decoration control attributes) specified for the Web page to be generated are read from the CSS file 402 and applied. Note that the dynamic Web page is generated by the Web server 200 according to the content of the request from the client or by the client terminal by using JavaScript or the like that operates on the Web browser.
In the present embodiment, the property in the CSS file 402 is information indicating an attribute for decoration (style).

In FIG. 1, a content analysis apparatus 100 accesses a Web server 200 via a network 300, and acquires Web content 400 stored in the Web server 200 as an analysis target.
Then, the content analysis apparatus 100 analyzes the acquired Web content 400 to be analyzed with the configuration described below. The analysis here is to detect an unused property that is not used for generating a Web page among the CSS properties included in the CSS file 402 of the Web content 400. In detecting an unused property, the content analysis apparatus 100 analyzes the document of the HTML file 401 included in the Web content 400 and the tags and CSS files in the structure of the HTML file 401 analyzed by the document analysis. A process for specifying the correspondence with the property in the structure is performed.
In addition, the content analysis apparatus 100 according to the present embodiment includes a property editing function that deletes an unused property designated as a deletion target by a user operation from the CSS file 402.

  The content analysis apparatus 100 transmits the Web content 400 including the edited CSS file 402 from which unused properties are deleted to the Web server 200. The web server 200 stores the web content 400 received from the content analysis apparatus 100. As a result, the Web site by the Web content 400 including the CSS file 402 from which unnecessary properties have been deleted from the Web server 200 is disclosed.

The CSS file 402 in the present embodiment includes a template in which properties corresponding to all styles that may be used in advance are prepared, for example. For this reason, the properties included in the CSS file 402 include properties that are not used for either static web pages or dynamic web pages.
That is, the Web content 400 includes useless data such as unused properties. When such Web content 400 is transmitted on the network 300, useless data is also transmitted, and for example, useless traffic increases.

In addition, when the Web browser reproduces the Web content 400, since the property used for generating the Web page is extracted from the CSS file 402 including many unnecessary properties, the Web page generation processing efficiency is improved. It is disadvantageous in terms.
When the Web browser reproduces the Web content 400, all properties are read from the CSS file 402 included in the Web content 400 and read into the memory. In this case, even the useless property that is not used for the output of the Web page in the Web content is read. In other words, in this case, the capacity of the memory is wasted, and the use efficiency of the memory cannot be said to be high.

  Thus, the existence of the CSS file 402 property that is not used for generating a Web page in the Web content 400 is a factor that reduces efficiency in aspects such as data transmission, Web page generation processing, and memory use.

Therefore, by deleting unnecessary properties of the CSS file 402 in the Web content 400 by the content analysis apparatus 100 as described above, efficiency in using the Web content can be improved.
Specifically, traffic when the Web content 400 is transmitted over the network 300 is reduced. Further, when the Web content 400 is played back by the client, the processing load is reduced. Further, the amount of data to be read into the memory is reduced, and the use efficiency of the memory is improved.

In the figure, an installation environment of the content analysis apparatus 100 configured to acquire the analysis target Web content 400 from the Web server 200 by communication via the network 300 is shown.
However, the installation environment of the content analysis apparatus 100 is not limited to the above example. For example, instead of the Web server 200, an installation environment in which the content analysis apparatus 100 acquires the Web content 400 stored in a storage device connected via the network 300 may be used.
Further, it may be an installation environment in which the content analysis apparatus 100 acquires the Web content 400 stored in a storage device that can be directly connected to the content analysis apparatus 100.
Further, the installation environment may be such that the content analysis apparatus 100 acquires the Web content 400 stored in the storage area provided in the content analysis apparatus 100.

  In addition, the function as the content analysis apparatus 100 in the present embodiment may be implemented as a plug-in function in an application capable of reproducing Web content such as a Web browser, for example. Alternatively, the function as the content analysis apparatus 100 may be realized by a dedicated application including the Web content analysis function and the property editing function in the present embodiment.

[Configuration example of content analysis device]
A configuration example of the content analysis apparatus 100 according to the present embodiment will be described with reference to FIG. The content analysis apparatus 100 shown in the figure includes a control unit 101, a display unit 102, and an operation unit 103.

The control unit 101 executes various controls in the content analysis apparatus 100. The function as the control unit 101 is realized by a CPU (Central Processing Unit) included in the content analysis apparatus 100 executing a program.
The control unit 101 in this embodiment includes a document analysis unit 111, a correspondence relationship specifying unit 112, an unused property detection unit 113, and a property deletion unit 114, as shown in FIG.

The document analysis unit 111 targets a Web content 400 that includes an HTML file 401 and a CSS file 402 that specifies decorations for elements in the HTML file 401, and a dynamic Web page and a static Web page that constitute the Web content 400 The structure of the HTML file 401 and the structure of the CSS file 402 corresponding to the above are analyzed. The dynamic web page is generated by the JavaScript file 403 acting on the HTML file 401. Therefore, the document analysis unit 111 obtains an analysis result (DOM tree) by causing the JavaScript file 403 to act on the HTML file 401 for the dynamic Web page.
The correspondence specifying unit 112 specifies the correspondence between the tag in the structure of the HTML file 401 analyzed by the document analysis unit 111 and the property in the structure of the CSS file 402.

The unused property detection unit 113 includes a property (hereinafter also referred to as “used property”) in the structure of the CSS file 402 that is identified by the correspondence specifying unit 112 to have a correspondence with the tag in the structure of the HTML file 401. The property in the CSS file 402 (hereinafter referred to as “text corresponding property”) is compared.
The unused property detection unit 113 is not used for either a static web page or a dynamic web page among the properties in the CSS file 402 based on the result of comparing the used property and the text-corresponding property. Detect unused properties.
The property deletion unit 114 deletes all or part of the unused properties detected by the unused property detection unit 113 from the CSS file 402.

The display unit 102 includes a display device and displays an image according to the control of the control unit 101.
The operation unit 103 collectively indicates operators and input devices included in the content analysis apparatus 100. Specifically, the operation unit 103 includes, for example, a mouse, a keyboard, a pen tablet, and the like. When the display unit 102 is configured as a touch panel, the touch panel is also included in the operation unit 103.

  Below, each structure of the document analysis part 111 in the control part 101, the corresponding relationship specific | specification part 112, the unused property detection part 113, and the property deletion part 114 is demonstrated.

FIG. 4 shows a configuration example of the document analysis unit 111. The document analysis unit 111 includes an HTML file analysis unit 1111 and a CSS file analysis unit 1112.
The HTML file analysis unit 1111 inputs a description in units of Web pages from the HTML file 401 and the JavaScript file 403 included in the Web content 400. In the present embodiment, the HTML file analysis unit 1111 inputs a description corresponding to every web page (static web page and all dynamic web pages) constituting the web content 400 from the HTML file 401 and the JavaScript file 403. To do.

The HTML file analysis unit 1111 performs syntax analysis on the description of the input Web page unit. Specifically, the HTML file analysis unit 1111 analyzes the hierarchy and appearance order of tags in the description of the Web page unit in the HTML file 401, and generates a DOM tree 501 corresponding to the Web page unit as an analysis result. The DOM tree 501 is information representing tags in a tree structure based on the analysis result. One DOM tree 501 is dynamically generated as a result of the DOM tree 501 corresponding to a static Web page output directly from the HTML file 401 and the JavaScript file 403 acting on the HTML file 401. There are two types of DOM trees 501 corresponding to Web pages. Accordingly, the HTML file analysis unit 1111 generates a plurality of DOM trees 501 in which the above two types are mixed.
The HTML file analysis unit 1111 of this embodiment generates the DOM tree 501 by a program called an HTML parser (syntax analyzer), for example. DOM (Document Object Model) is one of API (Application Program Interface) for using a structured document by HTML or XML from an application.

The CSS file analysis unit 1112 inputs a description of the CSS file 402 included in the web content 400. In the present embodiment, the CSS file analysis unit 1112 inputs from all the CSS files 402 constituting the web content 400. That is, the CSS file analysis unit 1112 receives all the CSS files 402 called from the HTML file 401 as input.
The CSS file analysis unit 1112 performs syntax analysis on the descriptions of all input CSS files 402. Specifically, the CSS file analysis unit 1112 analyzes the property, the property value, and the tag corresponding to the property in the description of the CSS file 402, and generates a CSS style rule 502 as an analysis result. The CSS style rule 502 is information in which all properties included in the CSS file, property values, and tags corresponding to the properties are represented in a tree structure based on the analysis result. Accordingly, there is one CSS style rule 502 generated corresponding to the Web content 400.
The CSS file analysis unit 1112 of this embodiment generates a CSS style rule by a program called a CSS parser (syntax analyzer), for example.

  As described above, the HTML file analysis unit 1111 and the CSS file analysis unit 1112 perform analysis, so that a plurality of DOM trees 501 and one CSS style rule 502 are generated according to the Web content 400. The DOM tree 501 and the CSS style rule 502 are generated on a memory provided in the control unit 101, for example.

  FIG. 5 shows a configuration example of the correspondence relationship specifying unit 112. The correspondence relationship specifying unit 112 shown in the figure includes a render tree generation unit 1121 and a correspondence list creation unit 1122.

  The render tree generation unit 1121 inputs the DOM tree 501 and the CSS style rule 502. The render tree generation unit 1121 associates the tag in the DOM tree 501 with the property in the CSS style rule 502 for each input DOM tree 501. A property associated with one tag is a property that specifies decoration of an element defined by a corresponding tag. A property value is added to the property associated with the tag.

The render tree generation unit 1121 generates a result of associating tags and properties for each DOM tree 501 as a render tree 600. That is, the same number of render trees 600 as the input DOM trees 501 are generated.
The render tree 600 represents a drawing order of a combination of a tag and a property corresponding to a visual element among a combination of a tag and a property associated as described above by a tree structure. Such a render tree 600 has a structure including a tag group 601 based on a set of tags as visual elements and a property group 602 associated with each tag included in the tag group 601.
The render tree 600 is generated for each Web page, and the Web page includes a static Web page and a dynamic Web page.

  Using the render tree 600, the correspondence list creation unit 1122 creates a correspondence list 700 indicating the correspondence with the property group 602 associated with each tag included in the tag group 601. The correspondence list creation unit 1122 of this embodiment creates a correspondence list corresponding to each of the static web page and the dynamic web page.

FIG. 6 schematically shows an example of the contents of the correspondence list 700 created by the correspondence list creation unit 1122.
The correspondence list 700 shown in the figure includes a static web page correspondence list corresponding to a static web page and a dynamic web page correspondence list corresponding to a dynamic web page.
The static web page correspondence list has a structure in which properties are associated with each tag corresponding to a static web page among web pages constituting the web content 400. A value is also added to the property. The display order is represented by the order of the list.
The dynamic web page correspondence list has a structure in which properties are associated with each tag corresponding to the dynamic web page among the web pages constituting the web content 400. Note that a value is added to the property also in the dynamic Web page correspondence list. Also in the dynamic Web page correspondence list, the display order is represented by the order of the list.

FIG. 7 shows a configuration example of the unused property detection unit 113. The unused property detection unit 113 shown in the figure includes a list creation unit 1131 and a comparison processing unit 1132.
The list creation unit 1131 inputs a CSS style rule 502 that is an analysis result of the CSS file 402 performed by the CSS file analysis unit 1112. The list creation unit 1131 extracts all the properties described in the tree structure of the input CSS style rule 502 together with corresponding values and tags. The list creation unit 1131 creates a list by combining the properties extracted as described above, property values, and tags corresponding to the properties. The created list is input as a source text corresponding property list 800 to the comparison processing unit 1132.

The comparison processing unit 1132 extracts all the properties included in each of the static web page correspondence list and the dynamic web page correspondence list in the correspondence list 700. Corresponding values and tags are added to the properties extracted in this way.
The use property list 750 is a list formed by combining the properties acquired from the correspondence list 700 as described above, property values, and tags corresponding to the properties. That is, the comparison processing unit 1132 creates the use property list 750 using the correspondence relationship list 700.

The comparison processing unit 1132 compares the property and the tag corresponding to the property included in the used property list 750 with the property and the tag corresponding to the property included in the original text corresponding property list 800. Based on the comparison result, the comparison processing unit 1132 detects an unused property from the properties included in the original text corresponding property list 800. Further, the comparison processing unit 1132 detects a tag corresponding to the unused property as well as the unused property. As described above, the unused property is a property that is not used for either the static web page or the dynamic web page that configures the web content 400.
Specifically, the comparison processing unit 1132 searches the source text corresponding property list 800 for properties that match the properties included in the used property list 750 as the comparison processing. Then, the comparison processing unit 1132 detects a property that does not match the property included in the used property list among the properties included in the original text corresponding property list 800 as an unused property.
The comparison processing unit 1132 of the present embodiment creates an unused property list 900 that lists the detected unused properties.

FIG. 8 shows a configuration example of the property deletion unit 114. The property deletion unit 114 shown in the figure includes an edit screen display control unit 1141 and a deletion processing unit 1142.
The edit screen display control unit 1141 inputs the unused property list 900 and performs control for causing the display unit 102 to display a property edit screen in which the contents of the input unused property list 900 are reflected.
Further, when the property designated by the user (editor of the CSS file 402) is deleted from the unused properties by the deletion processing unit 1142, the editing screen display control unit 1141 reflects the property deletion result. Change the property edit screen so that

By using the operation unit 103, the user can select an arbitrary property from among the properties displayed on the property editing screen as a deletion target, and perform an operation to instruct the deletion of the selected deletion target property. .
When a deletion of a property is instructed by an operation on the operation unit 103, the deletion processing unit 1142 of this embodiment deletes the specified property from the CSS file 402 in the Web content 400.

  FIG. 9 shows an example of a property editing screen. In the property editing screen shown in the figure, three line list item areas LN1, LN2, and LN3 are arranged. Hereinafter, the list item areas LN1, LN2, and LN3 will be referred to as list item areas LN unless otherwise distinguished.

  One list item area LN includes a property area PAR and a check box CHB. In the property area PAR, description contents of one unused property in the unused properties included in the unused property list 900 are shown. In the check box CHB, the check mark is switched between display and non-display according to the operation.

  In the property editing screen shown in the figure, an example is shown in which three line list item areas LN1, LN2, and LN3 are displayed. However, the number of list item areas LN displayed at one time is not particularly limited. Also, the list item area LN corresponding to the remaining properties not displayed on the property editing screen can be displayed by, for example, operating the scroll bar to scroll the window of the property editing screen.

The user confirms the content of the property displayed for each list item area LN on the property editing screen, and determines the property to be deleted from the CSS file 402. For example, the user may determine a property that is determined not to be used in the future and is unnecessary as a property to be deleted.
The user performs an operation of adding a check mark to the check box CHB in the list item area LN including the property area PAR indicating the property determined to be deleted.
In the figure, an example is shown in which a check mark is added to the check box CHB in the list item areas LN1, LN3 among the list item areas LN1, LN2, LN3. The property corresponding to the list item area LN to which the check mark is attached indicates that the property to be deleted is selected.

The user selects the property to be deleted as described above, and instructs the deletion of the property by operating the delete button BT1. In response to the operation of the delete button BT1, as described above, the deletion processing unit 1142 executes a process of deleting the property selected as the deletion target from the CSS file 402.
Further, when the property is deleted as described above, the display of the property editing screen changes so that the list item area LN corresponding to the deleted property is deleted. That is, on the property editing screen, only unused properties remaining in the CSS file 402 without being deleted are shown.
The user operates the end button BT2 to end property editing. When the end button BT2 is operated, for example, the window of the property editing screen shown in the figure is closed.
When an operation is performed on the delete button BT1, the deletion processing unit 1142 executes the deletion for the user before executing the process of deleting the property selected as the deletion target from the CSS file 402. You may display the message which confirms whether it is good.

  In this way, in the present embodiment, unnecessary properties can be deleted from the CSS file 402 by performing an operation in which the user designates a property to be deleted from unused properties and instructs the deletion. .

[Example of processing procedure]
With reference to the flowchart of FIG. 10, an example of a processing procedure executed by the content analysis apparatus 100 according to the present embodiment will be described.
In the content analysis apparatus 100, the document analysis unit 111 inputs the Web content 400 (step S101). The web content 400 input by the document analysis unit 111 may be stored in, for example, a RAM (Random Access Memory, not shown) included in the content analysis apparatus 100.

Next, the HTML file analysis unit 1111 in the document analysis unit 111 analyzes the HTML file 401 and the JavaScript file 403 included in the input Web content 400, and generates a DOM tree 501 for each Web page (step S102). ).
Further, the CSS file analysis unit 1112 in the document analysis unit 111 analyzes the CSS file 402 included in the input web content 400 and generates a CSS style rule 502 (step S103).

Next, the render tree generating unit 1121 in the correspondence specifying unit 112 uses the DOM tree 501 generated in step S102 and the CSS style rule 502 generated in step S103 as described in FIG. In addition, the render tree 600 is generated for each Web page (step S104). That is, the correspondence relationship specifying unit 112 associates a tag and a property on a Web page basis in step S104.
In addition, the correspondence list creation unit 1122 in the correspondence relationship identification unit 112 creates the correspondence list 700 for each Web page based on the render tree 600 generated in step S104 as described with reference to FIG. Step S105).

  Next, the list creation unit 1131 in the unused property detection unit 113 creates a source text corresponding property list using the CSS style rule 502 generated in step S103 (step S106). That is, the list creation unit 1131 extracts properties, property values, and tags corresponding to the properties described in the CSS style rule 502 tree structure, and corresponds to the extracted properties, property values, and properties. Create a text-compatible property list by listing the tags to be processed.

Next, the comparison processing unit 1132 in the unused property detection unit 113 uses the used property list based on combinations of tags, properties, and property values in all Web pages extracted from the correspondence list 700 created in step S105. 750 is created. In addition, the comparison processing unit 1132 uses the used property list 750 and the text corresponding property list 800 created in step S106, and tags corresponding to the unused property and the unused property as described with reference to FIG. Are detected (step S107).
The unused property detection unit 113 creates an unused property list 900 by listing the unused properties detected in step S107 (step S108).

  Next, the edit screen display control unit 1141 in the property deletion unit 114 performs control to display the property edit screen on the display unit 102 using the unused property list 900 created in step S108 (step S109). In step S109, the property editing screen is initially displayed.

In the state where the property editing screen is displayed, the deletion processing unit 1142 in the property deletion unit 114 determines whether or not an operation (property deletion instruction operation) instructing deletion of the property selected as the deletion target has been performed. (Step S110).
The operation for selecting the property to be deleted is an operation for adding a check mark to the check box CHB of the list item area LN corresponding to the unused property to be deleted as described with reference to FIG.
In addition, an operation for instructing deletion of the property selected as the deletion target is an operation on the deletion button BT1.

If it is determined that the property deletion instruction operation has been performed (step S110—YES), the deletion processing unit 1142 uses the CSS file 402 included in the web content 400 for the property selected as the deletion target on the property editing screen. (Step S111).
Further, the edit screen display control unit 1141 changes the property edit screen so that the deletion result in step S111 is reflected (step S112). That is, the edit screen display control unit 1141 changes the property edit screen so that the list item area LN corresponding to the property deleted in step S111 is not displayed.

If it is determined in step S110 that the property deletion instruction operation has not been performed (step S110-NO), or after executing the process of step S112, the editing screen display control unit 1141 is instructed to end property editing. It is determined whether or not (step S113).
The instruction to end property editing is performed by operating the end button BT2 on the property editing screen as described with reference to FIG.

  When it is determined that the property editing end instruction has not been given (step S113: NO), the edit screen display control unit 1141 returns the process to step S110. As a result, the property deletion process in the CSS file 402 is performed in response to the user's operation for property deletion.

  On the other hand, if it is determined that an instruction to end editing for property deletion has been made (step S113—YES), the deletion processing unit 1142 transmits the edited web content 400 to the web server 200, thereby causing the web server to The Web content 400 stored in 200 is updated to the edited content (step S114).

  By such processing, in the present embodiment, a property editing screen showing unused properties that are not used in any of the static web page and the dynamic web page configuring the web content 400 is displayed. A property selected from the unused properties can be deleted from the CSS file 402 by an operation on the property editing screen.

Second Embodiment
[Overview]
Next, the second embodiment will be described. In the first embodiment, unused properties are deleted from the structure of the CSS file 402. Therefore, in the first embodiment, the deleted unused property does not exist in the CSS file 402.
On the other hand, in the second embodiment, the unused property specified to be deleted is included in the structure of the CSS file 402 by including deletion designation information indicating that it is invalid in the CSS file 402. Disable it. In other words, in this embodiment, unused properties are deleted by invalidating unused properties in the CSS file 402.
For example, the deletion designation information may be a description for commenting out a description of a specified property in the CSS file 402.

  For example, when the Web browser generates a Web page by interpreting the Web content 400, it is assumed that the property indicated by the deletion designation information as invalid in the CSS file 402 is not described in the CSS file 402. Process. Accordingly, the Web content 400 in this case can generate a Web page with the same processing efficiency as when the unused property specified by the deletion specification information in the CSS file 402 is substantially deleted. .

  Here, the process of deleting the unused property by including the deletion designation information in the structure of the CSS file 402 as in the present embodiment is referred to as “indirect deletion”. On the other hand, processing for deleting unused properties from the structure of the CSS file 402 as in the first embodiment is referred to as “direct deletion”.

  In addition, when indirect deletion is performed as in the present embodiment, unused properties designated to be deleted remain in the CSS file 402 in a disabled state. Therefore, even if an unused property has been deleted, it can be easily restored (validated) as described in the CSS file 402 by deleting the corresponding deletion designation information. . That is, in the present embodiment, it is possible to easily cancel deletion of unused properties once deleted.

In the present embodiment, cancellation of unused property deletion as described above is performed in response to a user operation on the property editing screen.
FIG. 11 shows an example of a property editing screen in the present embodiment. In the figure, the same parts as those in FIG.
In the property editing screen shown in FIG. 10, in one list item area LN, a check box CHB, a property area PAR, and a deletion date / time area TAR are arranged from left to right.

The check box CHB indicates whether or not an unused property indicated in the corresponding property area PAR is selected as an invalidation target. In the check box CHB, the check mark is switched between display and non-display according to the operation. If a check mark is added (displayed) to the check box CHB, it indicates that the corresponding unused property is selected as the object to be invalidated. If the check box CHB is not checked, it indicates that the corresponding unused property has not been selected as an invalidation target.
In addition, among the list item areas LN, the list item area LN that is not grayed out indicates that the corresponding unused property is valid, and the list item area LN that is grayed out is the corresponding unused property. Indicates that is in a disabled state.
The deletion date / time area TAR indicates the date / time when the unused property indicated in the corresponding property area PAR is invalidated.

First, an example of an operation for invalidating unused properties on the property editing screen shown in FIG.
In the property editing screen, the check box CHB in the list item area LN corresponding to the unused property that has not been invalidated is not checked.
The user selects a list item area LN corresponding to an unused property to be newly invalidated from among the list item areas LN that are not checked in the check box CHB. The user performs an operation of adding a check mark to the check box CHB in the selected list item area LN. At this time, the user can add a check mark to the check box CHB in the list item area LN. That is, the user can specify a plurality of unused properties that are to be newly invalidated. When the user performs an operation for adding a check mark to the check box CHB as described above, the user then performs an operation on the delete button BT1.
The operation for adding a check mark to the check box CHB and the operation for the delete button BT1 are, for example, a tap operation for the area of the check box CHB and the delete button BT1 when the display unit 102 is configured as a touch panel. Good.

  In accordance with the operation on the delete button BT1, unused properties corresponding to the list item area LN in which the check box CHB is checked are invalidated in the CSS file 402. That is, in the CSS file 402, deletion designation information for unused properties corresponding to the selected list item area LN is added.

  Further, when the delete button BT1 is operated as described above, the list item area LN with the check mark added to the check box CHB changes to a grayed-out state, indicating that it is invalidated.

As a specific example of the unused property invalidation operation, in the case of FIG. 11, the user can select the list item area LN2 in which the check box CHB is not checked from the list item areas LN1, LN2, and LN3. Can be selected.
The user performs an operation on the delete button BT1 after performing an operation of adding a check mark to the check box CHB of the list item area LN2.
In accordance with the above operation, the unused property corresponding to the list item area LN2 is invalidated in the CSS file 402. Further, the list item area LN2 changes to a gray-out state in the same manner as the list item areas LN1 and LN3 in FIG.

Next, an example of an operation (deletion canceling operation) for restoring (validating) an unused property that has been deleted in the CSS file 402 on the property editing screen illustrated in FIG.
In this case, the user selects a list item area LN corresponding to an unused property whose invalidation is to be canceled from among the list item areas LN indicated to be invalidated by grayout on the property editing screen. Choose. As a specific example, here, a case where the user selects the list item area LN1 among the list item areas LN1 and LN3 which are grayed out on the property editing screen of FIG.
The user performs an operation of removing the check mark attached to the check box CHB in the selected list item area LN1. In addition, the user performs an operation on the deletion cancel button BT3.
In the above example, the operation of removing the check mark in one list item area LN is performed, but the user performs the operation of removing the check mark from the check box CHB in each of the plurality of list item areas LN. Can do.

  In response to an operation on the delete cancel button BT3, the unused property corresponding to the list item area LN1 from which the check mark is removed is restored (validated) as existing in the CSS file 402. At this time, in the CSS file 402, the deletion designation information added for the property corresponding to the selected list item area LN is deleted.

  In addition, when the unused property is validated as described above, the list item area LN1 changes from the gray out state so far to the non-gray out state, indicating that the CSS file 402 is in a valid state. Show.

In addition, the following operations can be performed on the property editing screen in the present embodiment before the operation of the delete button BT1 or the delete cancel button BT3.
That is, the user performs an operation of adding a check mark to a certain list item area LN and designating it as an invalidation target. On the other hand, for some other list item area LN, an operation of removing the check mark and designating it as a restoration target can be performed.
As a specific example of the above operation, the check box CHB in the list item area LN1 is unchecked on the property editing screen in FIG. 11, while a check mark is newly added to the check box CHB in the list item area LN2. The case where the operation to attach is performed will be described.

FIG. 12 shows a property editing screen when the check mark in the list item area LN1 is removed from the property editing screen in FIG. 11 and a check mark is newly added to the list item area LN2 as described above. Yes.
When the delete button BT1 is operated by the user under the state of the property editing screen shown in the figure, an unused property corresponding to the list item area LN2 newly added with a check mark is displayed in the CSS file 402. Invalidated at.
In addition, the property editing screen changes from the state shown in the figure to a state in which the list item area LN2 is newly grayed out, indicating that the corresponding unused property is invalidated.

Also, when the user has operated the delete cancel button BT3 under the state of the property editing screen shown in the figure, the unused property corresponding to the list item area LN1 with the check mark removed is displayed in the CSS file. Restored at 402.
In addition, the property editing screen changes from the state shown in the figure to the state in which the list item area L1 is grayed out to not grayed out, indicating that the corresponding unused property is valid in the CSS file 402.

  As described above, in the present embodiment, by deleting the unused property in the CSS file 402 as an indirect deletion, it becomes possible to cancel (enable) the deletion of the unused property with a simple operation. Also, the deletion canceling process may be as simple as deleting the deletion designation information added to the deletion target property in the CSS file 402.

[Example of processing procedure]
With reference to the flowchart of FIG. 13, an example of a processing procedure executed by the content analysis apparatus 100 according to this embodiment will be described. In the figure, steps that are the same as those in FIG. 10 are denoted by the same reference numerals, description thereof is omitted, and differences from FIG. 10 are mainly described.
In FIG. 10, steps S109A, S111A, and S112A are executed instead of steps S109, S111, and S112 in FIG. Moreover, the process of the same figure includes each process of step S121-S123.

In FIG. 10, steps S101 to S108 are the same as those in FIG.
In step S109A, as described with reference to FIG. 11, the edit screen display control unit 1141 is invalidated for each property depending on whether a check mark is displayed in the check box CHB in the list item area LN and whether there is a grayout display. A property editing screen reflecting whether or not it is in a state is displayed on the display unit 102.
For this purpose, the edit screen display control unit 1141 executes the following processing, for example. That is, the edit screen display control unit 1141 displays the list item area LN corresponding to each unused property list created in step S108.
In this embodiment, the unused property included in the unused property list is given a deletion designation information flag indicating whether or not deletion designation information has been added in the CSS file 402.
Therefore, the edit screen display control unit 1141 adds a check mark to the check box CHB for the list item region LN corresponding to the unused property to which the deletion designation information flag indicating that the deletion designation information has been added. Display. Further, the edit screen display control unit 1141 displays the list item area LN corresponding to the unused property to which the deletion designation information flag is assigned, in a grayed-out state together with the check mark displayed in the check box CHB. .
The deletion date / time area TAR on the property editing screen is displayed by using the deletion date / time acquired by the editing screen display control unit 1141 after the deletion date / time is included in the deletion specification information. Just do it.

  If it is determined in step S110 that a property deletion instruction operation has been performed (step S110-YES), the deletion processing unit 1142 in the property deletion unit 114 executes the following processing. That is, the deletion processing unit 1142 adds deletion designation information indicating that the property selected as the deletion target on the property editing screen is invalid in the CSS file 402 (step S111A).

Next, the edit screen display control unit 1141 changes the property edit screen so as to indicate that the property to which the deletion designation information is added in step S111A is invalidated (step S112A).
Specifically, the edit screen display control unit 1141 changes the state of the list item area LN corresponding to the property to which the deletion designation information is added to a state in which a check mark is displayed in the check box CHB and changes to a gray-out state. To do.

When the process of step S112A is completed, or when it is determined in step S110 that the property deletion instruction operation has not been performed (step S110-NO), the deletion processing unit 1142 determines whether the deletion cancellation instruction operation has been performed. Is determined (step S121).
The deletion cancellation instruction operation to be determined in step S121 is an operation of selecting a deletion cancellation target property on the property editing screen and instructing deletion cancellation of the selected property.
As described above, the operation for selecting the property to be deleted is performed in the list item area LN corresponding to the unused property to be deleted from the unused properties in the invalidated state on the property editing screen. This is an operation to remove the check mark from the check box CHB.
Further, the operation for instructing the deletion cancellation of the property selected as the deletion cancellation target is an operation of touching the deletion cancellation button BT3.

  When it is determined that a deletion cancellation instruction operation has been performed (YES in step S121), the deletion processing unit 1142 deletes the deletion designation information corresponding to the property selected as the deletion cancellation target from the CSS file 402 (step S121). S122).

Next, the edit screen display control unit 1141 changes the property edit screen so as to indicate that the property for which the deletion designation information has been deleted in step S122 is not invalidated (step S123).
Specifically, the edit screen display control unit 1141 hides the check mark displayed in the check box CHB and does not gray out the list item area LN corresponding to the property whose deletion designation information is deleted. Change to state.
In this case, the edit screen display control unit 1141 edits the property deletion after step S123 or when it is determined that the deletion cancel instruction operation has not been performed (step S121-NO). It is determined whether or not termination is instructed.

  Through the processing described above, indirect deletion that adds deletion designation information to the CSS file 402 as deletion of unused properties is realized, and unused properties that have been invalidated once in response to a deletion cancellation instruction operation are realized. 402 can be returned.

  Note that the property deletion unit 114 is switched between a direct deletion mode in which properties are deleted by direct deletion corresponding to the first embodiment and an indirect deletion mode in which properties are deleted by indirect deletion corresponding to the present embodiment. You may comprise. The switching may be performed by a user operation.

<Third Embodiment>
In the first embodiment and the second embodiment, the unused property selected by the user by the operation on the property editing screen is deleted from the CSS file 402.
In contrast, in the present embodiment, the property deletion unit 114 is configured to delete the detected unused property from the CSS file 402 in response to the detection of the unused property by the unused property detection unit 113. The
With such a configuration, an unused property that is not used for either a static Web page or a dynamic Web page can be automatically deleted without any user operation.
In the case of the above configuration, all unused properties detected by the unused property detection unit 113 are deleted from the CSS file 402. However, the unused property is not used for either a static web page or a dynamic web page, and is an unnecessary property at present. Therefore, even if all unused properties are deleted from the CSS file 402, there is no Web page that causes trouble in generation, and there is no particular problem.

  In the case of the content analysis apparatus 100 according to the present embodiment, the edit screen display control unit 1141 in the property deletion unit 114 illustrated in FIG. 8 may be omitted.

With reference to the flowchart of FIG. 14, an example of a processing procedure executed by the content analysis apparatus 100 according to this embodiment will be described. Note that steps that are the same as those in FIG. 10 are denoted by the same reference numerals and description thereof is omitted.
In FIG. 10, steps S101 to S107 are the same processing as in FIG.
Then, the deletion processing unit 1142 in the property deletion unit 114 deletes the detected unused property from the CSS file 402 of the Web content 400 in response to the detection of the unused property in Step S107 (Step S111B).

If the unused property is deleted in step S111B, the deletion processing unit 1142 in this case executes the process of step S114 as follows.
That is, the deletion processing unit 1142 updates the Web content 400 stored in the Web server 200 to the edited content by transmitting the Web content 400 after the editing in Step S114 to the Web server 200.

  By such processing, the Web content 400 having the CSS file 402 from which unused properties are deleted can be obtained without the user performing an operation to delete the properties.

  In the above configuration, the deletion processing unit 1142 deletes all unused properties detected in step S107 from the CSS file 402. However, for example, the deletion processing unit 1142 selects an unused property satisfying a predetermined condition from among the unused properties detected in step S107 as a deletion target, and then selects the selected unused property to be deleted from the CSS file 402. You may delete from. That is, some of the unused properties may be deleted from the CSS file 402.

  14 corresponds to a case where the property to be deleted is deleted from the CSS file 402 by direct deletion, as in the first embodiment. However, in this embodiment, the property may be invalidated by indirect deletion. In this case, instead of the processing of step S111B in FIG. 14, the deletion processing unit 1142 may be configured to perform processing for adding deletion designation information corresponding to unused properties to the CSS file 402.

<Fourth embodiment>
Subsequently, a fourth embodiment will be described. When unused properties are deleted from the CSS file 402 by direct deletion as in the first embodiment, for example, there is no information regarding deleted properties in the Web content 400. In this case, since it is difficult to specify which property has been deleted, it is not easy to restore the deleted property.
However, if the content analysis apparatus 100 manages deletion history information indicating a history related to property deletion, even if the CSS file 402 has an unused property deleted by direct deletion, the deletion history information is used. It becomes possible to restore a property once deleted.

FIG. 15 shows a configuration example of the content analysis apparatus 100 in the present embodiment. Note that the same parts as those in FIG.
As shown in the figure, the content analysis apparatus 100 in the present embodiment further includes a deletion history information storage unit 104. The deletion history information storage unit 104 stores deletion history information.
The deletion history information has, for example, a structure in which a description position in the CSS file 402, a deletion date, and the like are associated with each property description deleted so far.

  Cancellation of property deletion in the present embodiment may be performed by an operation on the property editing screen as in the second embodiment. Further, the mode of the property editing screen and the property deletion / deletion canceling operation for the property editing screen may be the same as described with reference to FIGS.

  An example of a processing procedure executed by the content analysis apparatus 100 according to this embodiment will be described with reference to the flowchart of FIG. In the figure, steps that are the same as those in FIG. 10 are denoted by the same reference numerals and description thereof is omitted. In the same figure, each process of step S131-S135 is included.

In the same figure, the process of step S101-S111 becomes the same as that of FIG.
The property selected as the deletion target in step S111 is deleted from the CSS file 402.
Next, the edit screen display control unit 1141 changes the property edit screen so as to indicate that the property deleted in step S111 is in a deleted state (step S112C).
Specifically, the edit screen display control unit 1141 changes the list item area LN corresponding to the deleted property to a grayed out state.
The following processing is executed along with the change of the property editing screen according to the deletion result in step S112C.
That is, the deletion processing unit 1142 updates the property deletion history information so that the unused property deletion result in step S111 is reflected (step S131). That is, the deletion processing unit 1142 registers information on unused properties deleted this time in the property deletion history information.

  When the process of step S131 is completed, or when it is determined in step S110 that the property deletion instruction operation has not been performed (NO in step S110), the deletion processing unit 1142 determines whether the deletion cancellation instruction operation has been performed. Is determined (step S132).

  When it is determined that a deletion cancellation instruction operation has been performed (YES in step S132), the deletion processing unit 1142 deletes information on unused properties (property description, description position) selected as a deletion cancellation target. Obtain from information. Then, using the acquired unused property information, the unused property is restored to the CSS file 402 (step S133).

  Next, the deletion processing unit 1142 updates the property deletion history information so that the unused property restoration result in step S133 is reflected (step S134). For this purpose, the deletion processing unit 1142 deletes, for example, information on the restored unused property from the deletion history information. Alternatively, the deletion processing unit 1142 may store a status flag indicating that it is in a restored state in the information regarding the restored unused property in the deletion history information. When the status flag is used as described above, for example, when an unused property that has been restored once is deleted again, the deletion processing unit 1142 may store a status flag indicating that the status is deleted.

  Also, the edit screen display control unit 1141 changes the property edit screen so that the restoration result in step S133 is reflected (step S135). That is, the edit screen display control unit 1141 changes the property edit screen so that the list item area LN corresponding to the property restored in step S133 changes to a state where it is not grayed out.

  After the process of step S135 is completed or when it is determined that the deletion cancel instruction operation has not been performed (NO in step S132), the edit screen display control unit 1141 instructs the end of property deletion editing in step S113. It is determined whether or not it has been done.

By such processing, even when an unused property is deleted from the CSS file 402 by direct deletion, it is possible to easily cancel the deletion of the unused property.
In the configuration using deletion history information as in the present embodiment, unused properties are deleted from the CSS file 402 without the user performing an operation for deleting the unused properties as in the third embodiment. It can also be applied to cases.

Further, the configuration using the deletion history information as in the present embodiment can be applied even under a configuration in which unused properties are invalidated by indirect deletion as in the second embodiment.
In this case, for example, the deletion history information can be used to display the property editing screen in which the invalid property invalidation state is reflected. In addition, an unused property can be deleted and restored by adding or deleting deletion designation information in the CSS file 402. Further, the restoration of unused properties in the CSS file 402 can be performed by a simple process by deleting the deletion designation information.

  Note that a program for realizing the functions as the above-described content analysis apparatus 100 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system and executed, thereby executing the above-described program. Processing as the content analysis apparatus 100 may be performed. Here, “loading and executing a program recorded on a recording medium into a computer system” includes installing the program in the computer system. The “computer system” here includes an OS and hardware such as peripheral devices. The “computer system” may include a plurality of computer devices connected via a network including a communication line such as the Internet, WAN, LAN, and dedicated line. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. As described above, the recording medium storing the program may be a non-transitory recording medium such as a CD-ROM. The recording medium also includes a recording medium provided inside or outside that is accessible from the distribution server in order to distribute the program. The code of the program stored in the recording medium of the distribution server may be different from the code of the program that can be executed by the terminal device. That is, the format stored in the distribution server is not limited as long as it can be downloaded from the distribution server and installed in a form that can be executed by the terminal device. Note that the program may be divided into a plurality of parts, downloaded at different timings, and combined in the terminal device, or the distribution server that distributes each of the divided programs may be different. Furthermore, the “computer-readable recording medium” holds a program for a certain period of time, such as a volatile memory (RAM) inside a computer system that becomes a server or a client when the program is transmitted via a network. Including things. The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

DESCRIPTION OF SYMBOLS 100 Content analysis apparatus, 101 Control part, 102 Display part, 103 Operation part, 104 Deletion history information storage part, 111 Document analysis part, 112 Correspondence relation specific | specification part, 113 Unused property detection part, 114 Property deletion part, 200 Web server , 300 network, 400 Web content, 401 HTML file, 402 CSS file, 403 Java Script file, 501 DOM tree, 502 CSS style rule, 600 render tree, 601 tag group, 602 property group, 700 correspondence list, 800 source text correspondence property List, 900 unused property list, 1111 HTML file analysis unit, 1112 CSS file analysis unit, 1121 render tree generation unit, 1122 List creation unit, 1131 list creation unit, 1132 comparison processing unit, 1141 edit screen display control unit, 1142 deletion processing unit, LN list item region, PAR property area, CHB check box, BT button, TAR delete date and time area

Claims (10)

On the computer,
The structured data corresponding to each of the static unit content and the dynamic unit content constituting the content, for a content including the structured document and decoration designating information for designating decoration for an element in the structured document. A document analysis step for analyzing the structure of the document and the structure of the decoration designation information;
A correspondence specifying step for specifying a correspondence between an element in the structure of the structured document analyzed by the document analysis step and a decoration control attribute in the structure of the decoration designation information;
As a result of comparing the decoration control attribute in the structure of the decoration designation information identified as having a correspondence with the element in the structure of the structured document by the correspondence identification step and the decoration control attribute in the decoration designation information Based on the decoration control attribute in the decoration designation information, an unused decoration control attribute detection step for detecting an unused decoration control attribute that is not used for either static unit content or dynamic unit content. A program to be executed. The said computer is further made to perform the decoration control attribute deletion step which deletes all or one part of the unused decoration control attributes detected by the said unused decoration control attribute detection step from the said decoration designation | designated information. Program. The program according to claim 2, wherein the decoration control attribute deletion step deletes a description corresponding to an unused decoration control attribute to be deleted in the decoration designation information. The program according to claim 2, wherein the decoration control attribute deletion step adds deletion designation information indicating that an unused decoration control attribute to be deleted is invalid in the decoration designation information to the structure of the decoration designation information. The decoration control attribute deletion step deletes the deletion designation information added to the structure of the decoration designation information so that the unused decoration control attribute deleted from the decoration designation information is restored in the decoration designation information. The program according to claim 4. The decoration control attribute deletion step is performed according to an operation of designating an unused decoration control attribute to be deleted from the unused decoration control attributes detected by the unused decoration control attribute detection step. The program according to any one of claims 2 to 5, wherein an unused decoration control attribute is deleted from the decoration designation information. The decoration control attribute deletion step deletes all or part of the detected unused decoration control attribute from the decoration designation information in response to detection of the unused decoration control attribute by the unused decoration control attribute detection step. Item 6. The program according to any one of Items 2 to 5. In the decoration control attribute deletion step, the unused decoration control attribute deleted from the decoration designation information is replaced with the decoration designation information based on deletion history information indicating a history of deletion of unused decoration control attributes from the decoration designation information. The program according to any one of claims 2 to 7, wherein the program is restored in step (a). The structured data corresponding to each of the static unit content and the dynamic unit content constituting the content, for a content including the structured document and decoration designating information for designating decoration for an element in the structured document. A document analysis unit for analyzing the structure of the document and the structure of the decoration designation information;
A correspondence specifying unit that specifies a correspondence between an element in the structure of the structured document analyzed by the document analysis unit and a decoration control attribute in the structure of the decoration designation information;
As a result of comparing the decoration control attribute in the structure of the decoration designation information identified as having a correspondence with the element in the structure of the structured document by the correspondence relation identification unit and the decoration control attribute in the decoration designation information Based on the decoration control attribute in the decoration designation information, an unused decoration control attribute detection unit that detects an unused decoration control attribute that is not used for either static unit content or dynamic unit content. A content analysis apparatus provided. The structured data corresponding to each of the static unit content and the dynamic unit content constituting the content, for a content including the structured document and decoration designating information for designating decoration for an element in the structured document. A document analysis step for analyzing the structure of the document and the structure of the decoration designation information;
A correspondence specifying step for specifying a correspondence between an element in the structure of the structured document analyzed by the document analysis step and a decoration control attribute in the structure of the decoration designation information;
As a result of comparing the decoration control attribute in the structure of the decoration designation information identified as having a correspondence with the element in the structure of the structured document by the correspondence identification step and the decoration control attribute in the decoration designation information Based on the decoration control attribute in the decoration designation information, an unused decoration control attribute detection step for detecting an unused decoration control attribute that is not used for either static unit content or dynamic unit content. Including content analysis methods.

Images