From faabf968e9d33ef1a0ae38f7cd3fd9bda426f490 Mon Sep 17 00:00:00 2001
From: Warren Block <wblock@FreeBSD.org>
Date: Mon, 24 Aug 2015 15:54:10 +0000
Subject: Add PO translation support.

Reviewed by:	hrs (earlier version), blackend
Approved by:	doceng (implicit)
Differential Revision:	https://reviews.freebsd.org/D2947
---
 share/mk/doc.commands.mk |  5 +++++
 share/mk/doc.docbook.mk  | 52 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+)

diff --git a/share/mk/doc.commands.mk b/share/mk/doc.commands.mk
index cbefc8b3db..c40cce9f2c 100644
--- a/share/mk/doc.commands.mk
+++ b/share/mk/doc.commands.mk
@@ -70,8 +70,13 @@ HTML2PDBOPTS?=	-y -d0 -Idef ${HTML2PDBFLAGS}
 HTML2TXT?=	${PREFIX}/bin/links
 HTML2TXTOPTS?=	-dump ${HTML2TXTFLAGS}
 
+ITSTOOL?=	${PREFIX}/bin/itstool
+
 JING?=		${PREFIX}/bin/jing
 
+MSGFMT?=	${PREFIX}/bin/msgfmt
+MSGMERGE?=	${PREFIX}/bin/msgmerge
+
 XMLLINT?=	${PREFIX}/bin/xmllint
 XSLTPROC?=	${PREFIX}/bin/xsltproc
 
diff --git a/share/mk/doc.docbook.mk b/share/mk/doc.docbook.mk
index 1a01928e7e..f794e7a412 100644
--- a/share/mk/doc.docbook.mk
+++ b/share/mk/doc.docbook.mk
@@ -270,6 +270,58 @@ ${DOC}.parsed.xml: ${SRCS} ${XML_INCLUDES}
 	${SED} 's|@@URL_RELPREFIX@@|http://www.FreeBSD.org|g' < ${.TARGET} > ${DOC}.parsed.print.xml
 	${SED} -i '' -e 's|@@URL_RELPREFIX@@|../../../..|g' ${.TARGET}
 
+# translation -------------------------------------------------------
+
+# Master English document
+MASTERDOC_EN?=	${MASTERDOC:S/${LANGCODE}/en_US.ISO8859-1/}
+TRAN_DIR?=	${MASTERDOC:H}
+EN_DIR?=	${TRAN_DIR:S/${LANGCODE}/en_US.ISO8859-1/}
+PO_LANG?=	${LANGCODE:C/\..*$//}
+PO_CHARSET?=	${LANGCODE:tl:C/^.*\.//:S/^iso/iso-/:S/utf-8/UTF-8/}
+CLEANFILES+=	${DOC}.translate.xml ${PO_LANG}.mo ${PO_LANG}.mo
+
+# fix settings in PO file
+POSET_CMD=	${SED} -i '' -e 's,^\(\"Language-Team:.*\\n\"\),\1\${.newline}\"Language: ${PO_LANG}\\n\",' \
+			     -e 's,^\"Content-Type: text/plain; charset=.*\\n,\"Content-Type: text/plain; charset=${PO_CHARSET}\\n,'
+
+.if ${.TARGETS:Mpo} || ${.TARGETS:Mtran}
+${DOC}.translate.xml:
+	@if [ "${TRAN_DIR}" == "${EN_DIR}" ]; then \
+		${ECHO} "build PO file in a non-English dir" ; \
+		exit 1 ; \
+	 fi
+	# normalize the English original into a single file
+	@${XMLLINT} --nonet --noent --valid --xinclude ${MASTERDOC_EN} > ${.TARGET}.tmp
+	# remove redundant namespace attributes
+	@${XMLLINT} --nsclean ${.TARGET}.tmp > ${.TARGET}
+	@${RM} ${.TARGET}.tmp
+
+po: ${PO_LANG}.po
+.PHONY:	po
+${PO_LANG}.po:	${DOC}.translate.xml
+	@${ITSTOOL} -o ${PO_LANG}.po.tmp ${DOC}.translate.xml
+	@( if [ -f "${PO_LANG}.po" ]; then \
+		echo "${PO_LANG}.po exists, merging" ; \
+		${MSGMERGE} -o ${PO_LANG}.po.new ${PO_LANG}.po ${PO_LANG}.po.tmp ;\
+		${MV} ${PO_LANG}.po.new ${PO_LANG}.po ; \
+		${RM} ${PO_LANG}.po.tmp ; \
+	  else \
+	  	${ECHO} "${PO_LANG}.po created, please check and correct the settings in the header" ; \
+		${MV} ${PO_LANG}.po.tmp ${PO_LANG}.po ; \
+		${POSET_CMD} ${.TARGET} ; \
+	  fi )
+
+${PO_LANG}.mo:	${PO_LANG}.po
+	@${MSGFMT} -o ${.TARGET} ${.ALLSRC}
+
+tran ${DOC}.xml:	${DOC}.translate.xml ${PO_LANG}.mo
+	@if [ "${TRAN_DIR}" = "${EN_DIR}" ]; then \
+		${ECHO} "build translation in a non-English dir" ; \
+		exit 1 ; \
+	 fi
+	${ITSTOOL} -l ${PO_LANG} -m ${PO_LANG}.mo -o ${DOC}.xml ${DOC}.translate.xml
+.endif
+
 # XHTML -------------------------------------------------------------
 
 index.html: ${DOC}.parsed.xml ${LOCAL_IMAGES_LIB} ${LOCAL_IMAGES_PNG} \
-- 
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