113 lines
3.1 KiB
Smalltalk
113 lines
3.1 KiB
Smalltalk
"
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I model the interaction between Pandoc and Grafoscopio.
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"
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Class {
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#name : #Pandoc,
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#superclass : #Object,
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#classInstVars : [
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'executable'
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],
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#category : #'Grafoscopio-Utils'
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}
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{ #category : #'as yet unclassified' }
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Pandoc class >> downloadLuaFilters [
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self luaFilters do: [ :filter | | filterUrl |
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filterUrl := filter asUrl.
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(FileLocator temp asFileReference / (filterUrl segments last)) exists
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ifFalse: [
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ZnClient new
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url: filterUrl;
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downloadTo: FileLocator temp ] ]
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]
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{ #category : #accessing }
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Pandoc class >> executable [
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^ executable ifNil: [ self executableLocation ]
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]
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{ #category : #accessing }
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Pandoc class >> executable: aFileReference [
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executable := aFileReference
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]
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{ #category : #accessing }
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Pandoc class >> executableLocation [
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| location |
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location := '/usr/bin/pandoc'.
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location asFileReference exists
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ifTrue: [ ^ location ]
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ifFalse: [ self definePandocExecutable ]
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]
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{ #category : #utility }
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Pandoc class >> extractImagesInUnixFor: aFileReference withFilter: aLuaFilter [
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"I use Pandoc Lua scripting capabilities to extract al images links in aFileReference"
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OSSUnixSubprocess new
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command: 'pandoc';
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arguments: {aFileReference fullName . '--lua-filter=',aLuaFilter fullName };
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redirectStdout;
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redirectStderr;
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runAndWaitOnExitDo: [ :process :outString :errString |
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process isSuccess
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ifTrue: [
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^ ((Soup fromString: outString) findAllTags: 'td') collect: [ :each | each next ] ]
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ifFalse: [
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"OSSUnixProcessExitStatus has a nice #printOn: "
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Transcript show: 'Command exit with error status: ', process exitStatusInterpreter printString; cr.
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Transcript show: 'Stderr contents: ', errString.
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]
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]
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]
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{ #category : #converters }
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Pandoc class >> htmlToMarkdown: inputFile [
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| outputFile |
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outputFile := FileLocator temp / 'body.md'.
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outputFile ensureDelete.
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outputFile ensureCreateFile.
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OSSUnixSubprocess new
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command: 'pandoc';
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arguments: {'-f'. 'html'. '-t'. 'markdown'. '--atx-headers'. inputFile fullName.
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'--output'. outputFile fullName };
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redirectStdout;
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redirectStderr;
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runAndWaitOnExitDo: [ :process :outString :errString |
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process isSuccess
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ifTrue: [ ^ outputFile contents ]
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ifFalse: [ ^inputFile contents ]
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]
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]
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{ #category : #'as yet unclassified' }
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Pandoc class >> listImagesFrom: aFileReference [
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"I provide a list of all images contained in aFile."
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| filter commandString outputString |
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filter := FileLocator temp asFileReference / 'image-links.lua'.
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filter exists
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ifFalse: [ self downloadLuaFilters ].
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commandString := 'pandoc ' , aFileReference fullName
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, ' --lua-filter=' , filter fullName.
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^ self extractImagesInUnixFor: aFileReference withFilter: filter
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]
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{ #category : #utility }
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Pandoc class >> luaFilters [
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"I define the location of set of scripts, that allows to change the default behaviour of Pandoc
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and/or the processing of supported markup languages.
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For more information about Lua filters see:
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https://pandoc.org/lua-filters.html
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"
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| filters |
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filters := OrderedCollection new.
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filters
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add: 'http://mutabit.com/repos.fossil/dataweek/doc/tip/Artefactos/Scripts/image-links.lua'.
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^ filters
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]
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