ODP-1987 : Use asciidoctor tool to compile docs instead of asciidoc and xmlto (#6)

* ODP-main migration for JDK-11

* ODP-1987 : Migrate from asciidoc to asciidoctor for docs compilation

* ODP-1987 : Set ODP version to 3.3.6.0-1

* ODP-1987 : Fixed spacing

* ODP-1987 : Fixed Compile failure

* ODP-1987 : Fixed Makefile

---------

Co-authored-by: manishsinghmowall <manishsingh@acceldata.io>

Author: harshith-212

src/docs/Makefile

@@ -22,8 +22,6 @@ BUILD_DIR=$(BUILDROOT)/docs
 
 VERSION=Unknown
 
-# Building documentation under CentOS causes xmlto to have issues
-# with validation. Disable this step.
 VALIDATION=$(shell ( lsb_release -d | grep CentOS > /dev/null 2>&1 ) \
        && echo "--skip-validation" )
 
@@ -40,63 +38,47 @@ MANPAGES=$(MANSOURCES:.txt=.1.gz)
 
 REVDATE=$(shell date)
 
-
-website: 
+website:
 	mkdir -p $(WEBSITE_DIR)
-	asciidoc --unsafe -a revnumber=$(VERSION) \
-		-b docbook \
+	asciidoctor -b html5 -a revnumber=$(VERSION) \
+		-o $(WEBSITE_DIR)/SqoopUserGuide.html \
 		user/SqoopUserGuide.txt
-	xmlto $(VALIDATION) -o $(WEBSITE_DIR) -m web/html.xsl \
-		html-nochunks user/SqoopUserGuide.xml
-	asciidoc --unsafe -a revnumber=$(VERSION) \
-		-b docbook \
+	asciidoctor -b html5 -a revnumber=$(VERSION) \
+		-o $(WEBSITE_DIR)/SqoopDevGuide.html \
 		dev/SqoopDevGuide.txt
-	xmlto $(VALIDATION) -o $(WEBSITE_DIR) -m web/html.xsl \
-		html-nochunks dev/SqoopDevGuide.xml
-	asciidoc --unsafe -a revnumber=$(VERSION) \
-	  -b docbook \
+	asciidoctor -b html5 -a revnumber=$(VERSION) \
+	 	-o $(WEBSITE_DIR)/index.html \
 		web/index.txt
-	xmlto $(VALIDATION) -o $(WEBSITE_DIR) -m web/html.xsl \
-		html-nochunks web/index.xml
 	cp web/docbook.css $(WEBSITE_DIR)
 	rsync -a web/images $(WEBSITE_DIR)/
 
 man: $(MANPAGES)
 
 %.1.gz : %.txt
-	asciidoc --unsafe -b docbook -d manpage -a "author=Sqoop Team" $<
-	xmlto man $(VALIDATION) $*.xml -o man
-	gzip $*.1
-	rm $*.xml
+	mkdir -p man
+	asciidoctor --backend=manpage -a author="Sqoop Team" \
+		-o man/$*.1 $<
+	gzip man/$*.1
 	mkdir -p $(BUILD_DIR)
-	mv $@ $(BUILD_DIR)
+	mv man/$*.1.gz $(BUILD_DIR)
 
 $(BUILD_DIR)/SqoopUserGuide.html: user/*.txt
 	mkdir -p $(BUILD_DIR)
-	asciidoc --unsafe -a revnumber=$(VERSION) \
-		-b docbook \
+	asciidoctor -b html5 -a revnumber=$(VERSION) \
+		-o $(BUILD_DIR)/SqoopUserGuide.html \
 		user/SqoopUserGuide.txt
-	xmlto $(VALIDATION) -o $(BUILD_DIR) -m web/html.xsl \
-		html-nochunks user/SqoopUserGuide.xml
-	rm user/SqoopUserGuide.xml
 
 $(BUILD_DIR)/SqoopDevGuide.html: dev/*.txt
 	mkdir -p $(BUILD_DIR)
-	asciidoc --unsafe -a revnumber=$(VERSION) \
-		-b docbook \
+	asciidoctor -b html5 -a revnumber=$(VERSION) \
+		-o $(BUILD_DIR)/SqoopDevGuide.html \
 		dev/SqoopDevGuide.txt
-	xmlto $(VALIDATION) -o $(BUILD_DIR) -m web/html.xsl \
-		html-nochunks dev/SqoopDevGuide.xml
-	rm dev/SqoopDevGuide.xml
 
 $(BUILD_DIR)/index.html: web/index.txt
 	mkdir -p $(BUILD_DIR)
-	asciidoc --unsafe -a revnumber=$(VERSION) \
-	  -b docbook \
+	asciidoctor -b html5 -a revnumber=$(VERSION) \
+	 	-o $(BUILD_DIR)/index.html \
 		web/index.txt
-	xmlto $(VALIDATION) -o $(BUILD_DIR) -m web/html.xsl \
-		html-nochunks web/index.xml
-	rm web/index.xml
 
 supportfiles:
 	mkdir -p $(BUILD_DIR)