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<strong>HTML Documents</strong> |
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== Reading/Parsing== |
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Expecco can read and write a number of common document formats. |
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Typically, documents are parsed into a so called DOM, which is then processed (searched or manipulated). |
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Some is found in the standard library, others are provided by additional (plugin) libraries. |
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Actions to parse are found in the standard library. |
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Notice, that in addition to action blocks from libraries, a lot of functionality is provided by the underlying framework (i.e. class libraries), which can be called from new elementary action blocks. |
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* [[HelpWizard Pages Documents HTML/en | HTML]] (web pages) |
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* [[HelpWizard Pages Documents XML/en| XML]] |
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* [[HelpWizard Pages Documents JSON/en| JSON]] |
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* [[HelpWizard Pages Documents PDF/en| PDF]] |
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* [[HelpWizard Pages Documents CSV/en| CSV]] (comma separated values / Excel) |
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* [[HelpWizard Pages Documents Word/ODF/en| Word/ODF]] (open document format) |
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* [[HelpWizard Pages Documents ZIP/en| ZIP]] (ZIP archives) |
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Elementary Smalltalk code can get a DOM tree via: |
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Provided by plugins: |
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HTML::HtmlParser parse:''aStringOrStream'' |
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* [[HelpWizard Pages Documents Edifact/en| Edifact]] (B2B Documents) |
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or |
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* [[HelpWizard Pages Documents Swift/en| Swift]] (Swift Messages) |
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HTML::HtmlParser parseFile:''aFilename'' |
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The resulting document node (DOM) can then be processed: |
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''aDocNode'' head |
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''aDocNode'' body |
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xPath like access: |
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''aDocNode'' / ''tagName'' |
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''aDocNode'' // ''tagName'' |
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For example, to get all anchors: |
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|doc| |
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doc := HTML::HTMLParser parseFile:'myFile.html'. |
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anchors := doc // 'a'. |
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Use the class browser to see all methods provided by HTML elements and the parser. |
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Use an inspector on the results, for what can be done with an element. |
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[[Category: HelpWizard]] |
[[Category: HelpWizard]] |
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Version vom 29. August 2022, 11:16 Uhr
HTML Documents
Reading/Parsing[Bearbeiten]
Typically, documents are parsed into a so called DOM, which is then processed (searched or manipulated). Actions to parse are found in the standard library.
Elementary Smalltalk code can get a DOM tree via:
HTML::HtmlParser parse:aStringOrStream
or
HTML::HtmlParser parseFile:aFilename
The resulting document node (DOM) can then be processed:
aDocNode head aDocNode body
xPath like access:
aDocNode / tagName aDocNode // tagName
For example, to get all anchors:
|doc| doc := HTML::HTMLParser parseFile:'myFile.html'. anchors := doc // 'a'.
Use the class browser to see all methods provided by HTML elements and the parser. Use an inspector on the results, for what can be done with an element.
