From 37245db024dce38d7c1c3e8eaa3c3652685ba3a7 Mon Sep 17 00:00:00 2001
From: OffrayLuna <offray.luna@mutabit.com>
Date: Tue, 4 Dec 2018 23:53:05 +0000
Subject: [PATCH] Debugging Pandoc HTML to Markdown importation, now using
 OSSubprocess.

---
 src/Grafoscopio/GrafoscopioNode.class.st     | 17 ++++-------------
 src/Grafoscopio/GrafoscopioNotebook.class.st | 18 ++++++++++++++++++
 src/Grafoscopio/Pandoc.class.st              | 20 ++++++++++++++++++++
 3 files changed, 42 insertions(+), 13 deletions(-)

diff --git a/src/Grafoscopio/GrafoscopioNode.class.st b/src/Grafoscopio/GrafoscopioNode.class.st
index dd87b51..7436afa 100644
--- a/src/Grafoscopio/GrafoscopioNode.class.st
+++ b/src/Grafoscopio/GrafoscopioNode.class.st
@@ -522,27 +522,18 @@ GrafoscopioNode >> headers [
 { #category : #operation }
 GrafoscopioNode >> htmlToMarkdown [
 	"I convert the node body from HTML format to Pandoc's Markdown."
-	| htmlFile markdownFile |
-	
+	| htmlFile |	
 	(self isTaggedAs: 'código' ) ifTrue: [ ^self ].
 	((self headerStartsWith: '%invisible') "or:[self hasAncestorHeaderWith: '%invisible']") 
 		ifTrue: [ ^self ].
 	htmlFile := FileLocator temp asFileReference / 'body.html'.
-	htmlFile ensureDelete.
-	markdownFile := FileLocator temp asFileReference / 'body.markdown'.
-	markdownFile ensureDelete.
+	htmlFile ensureCreateFile.
 	htmlFile writeStreamDo: [:out | out nextPutAll: self body ].
 	Smalltalk platformName = 'unix'
-		ifTrue: [ OSProcess 
-						waitForCommand: 'pandoc -f html -t markdown --atx-headers ', 
-							htmlFile fullName, ' -o ', markdownFile fullName ].
+		ifTrue: [ self body: (Pandoc htmlToMarkdown: htmlFile) ].
 	Smalltalk platformName = 'Win32'
-		ifTrue: [ WinProcess 
-						createAndWaitForProcess: 'pandoc -f html -t markdown --atx-headers ', 
-							htmlFile fullName, ' -o ', markdownFile fullName ].
-	self body: markdownFile contents.
+		ifTrue: [ self shouldBeImplemented ].
 	htmlFile ensureDelete.
-	markdownFile ensureDelete.
 ]
 
 { #category : #operation }
diff --git a/src/Grafoscopio/GrafoscopioNotebook.class.st b/src/Grafoscopio/GrafoscopioNotebook.class.st
index f02783b..d839db6 100644
--- a/src/Grafoscopio/GrafoscopioNotebook.class.st
+++ b/src/Grafoscopio/GrafoscopioNotebook.class.st
@@ -170,6 +170,24 @@ GrafoscopioNotebook >> demoteNode [
 	self notebookContent: notebook.
 ]
 
+{ #category : #'as yet unclassified' }
+GrafoscopioNotebook >> downloadImages [
+	"I download all images in a notebook into a local folder that respects relative paths.
+	So if a image refers to http://mysite.com/uploads/chap1/myimage.png, it will be stored
+	into: 'uploads/chap1/myimage.png' in the same folder where the notebook is stored.
+	This is helpful for notebooks conversions that expect to have local images in particular
+	locations."
+
+	| parentFolder |
+	parentFolder := self workingFile parent.
+	self.
+	^ self imagesList do: [ :each | | relativePathString link |
+		link := each contents asUrl.
+		relativePathString := link directory.
+		relativePathString ifNotEmpty: [ 
+			GrafoscopioUtils ensureCreateDirectory: relativePathString into: parentFolder ]]
+]
+
 { #category : #persistence }
 GrafoscopioNotebook >> exportAllSubtreesAsMarkdow [
 	| toBeExported |
diff --git a/src/Grafoscopio/Pandoc.class.st b/src/Grafoscopio/Pandoc.class.st
index 4a174f7..67ce328 100644
--- a/src/Grafoscopio/Pandoc.class.st
+++ b/src/Grafoscopio/Pandoc.class.st
@@ -61,6 +61,26 @@ Pandoc class >> extractImagesInUnixFor: aFileReference withFilter: aLuaFilter [
 	]
 ]
 
+{ #category : #converters }
+Pandoc class >> htmlToMarkdown: inputFile [
+	
+	| outputFile |
+	outputFile := FileLocator temp / 'body.md'.
+	outputFile ensureDelete.
+	outputFile ensureCreateFile.
+	OSSUnixSubprocess new
+		command: 'pandoc';
+		arguments: {'-f'. 'html'. '-t'. 'markdown'. '--atx-headers'. inputFile fullName. 
+			'--output'. outputFile fullName  };
+	redirectStdout;
+	redirectStderr;
+	runAndWaitOnExitDo: [ :process :outString :errString |
+		process isSuccess
+			ifTrue: [ ^ outputFile contents ]
+			ifFalse: [ ^inputFile contents ]
+	]
+]
+
 { #category : #'as yet unclassified' }
 Pandoc class >> listImagesFrom: aFileReference [
 	"I provide a list of all images contained in aFile."