From d73024303b4bbac3d6a7e861f7b3b91b0541a5ba Mon Sep 17 00:00:00 2001
From: Yugo Nagata <nagata@sraoss.co.jp>
Date: Mon, 11 Nov 2024 19:45:18 +0900
Subject: [PATCH v2 2/2] Check non-latin1 characters in make check

---
 doc/src/sgml/Makefile | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/doc/src/sgml/Makefile b/doc/src/sgml/Makefile
index 18bf87d031..55dd2da299 100644
--- a/doc/src/sgml/Makefile
+++ b/doc/src/sgml/Makefile
@@ -36,6 +36,10 @@ ifndef FOP
 FOP = $(missing) fop
 endif
 
+ifndef ICONV
+ICONV = $(missing) iconv
+endif
+
 PANDOC = pandoc
 
 XMLINCLUDE = --path . --path $(srcdir)
@@ -160,7 +164,6 @@ XSLTPROC_FO_FLAGS += --stringparam img.src.path '$(srcdir)/'
 	awk 'BEGIN{err=0}{print}/not available in font/{err=1}END{exit err}' 1>&2  || \
 	(echo "Found characters that cannot be displayed in PDF" 1>&2;  exit 1)
 
-
 ##
 ## EPUB
 ##
@@ -197,7 +200,7 @@ MAKEINFO = makeinfo
 ##
 
 # Quick syntax check without style processing
-check: postgres.sgml $(ALL_SGML) check-tabs check-nbsp
+check: postgres.sgml $(ALL_SGML) check-tabs check-nbsp check-non-latin1
 	$(XMLLINT) $(XMLINCLUDE) --noout --valid $<
 
 
@@ -270,6 +273,12 @@ check-nbsp:
 	  $(wildcard $(srcdir)/*.sgml $(srcdir)/ref/*.sgml $(srcdir)/*.xsl $(srcdir)/images/*.xsl) ) || \
 	(echo "Non-breaking spaces appear in SGML/XML files" 1>&2;  exit 1)
 
+# Non-Latin1 characters cannot be displayed in PDF.
+check-non-latin1:
+	@ ( $(PERL) -ne '/[\x80-\xFF]/ and `${ICONV} -t ISO-8859-1 -f UTF-8 "$$ARGV" 2>/dev/null` and print("$$ARGV:$$_"),$$n++; END {exit($$n>0)}' \
+	  $(wildcard $(srcdir)/*.sgml $(srcdir)/ref/*.sgml $(srcdir)/*.xsl $(srcdir)/images/*.xsl) ) || \
+	(echo "Non-Latin1 characters appear in SGML/XML files" 1>&2;  exit 1)
+
 ##
 ## Clean
 ##
-- 
2.34.1