From a717782480426e834011d4f91b0c5cafa0b7a5a5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C5=99emysl=20Eric=20Janouch?= <p@janouch.name>
Date: Wed, 24 Aug 2022 00:12:04 +0200
Subject: [PATCH] Build with AsciiDoc as well as Asciidoctor

---
 CMakeLists.txt | 29 ++++++++++++++++++++---------
 README.adoc    |  3 ++-
 xB.adoc        |  4 ++--
 xC.adoc        |  4 ++--
 4 files changed, 26 insertions(+), 14 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6ffe9b9..4b403f3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -204,20 +204,31 @@ install (DIRECTORY plugins/xC/
 
 # Generate documentation from text markup
 find_program (ASCIIDOCTOR_EXECUTABLE asciidoctor)
-if (NOT ASCIIDOCTOR_EXECUTABLE)
-	message (FATAL_ERROR "asciidoctor not found")
+find_program (A2X_EXECUTABLE a2x)
+if (NOT ASCIIDOCTOR_EXECUTABLE AND NOT A2X_EXECUTABLE)
+	message (FATAL_ERROR "Neither asciidoctor nor a2x were found")
 endif ()
 
 foreach (page xB xC xD)
 	set (page_output "${PROJECT_BINARY_DIR}/${page}.1")
 	list (APPEND project_MAN_PAGES "${page_output}")
-	add_custom_command (OUTPUT ${page_output}
-		COMMAND ${ASCIIDOCTOR_EXECUTABLE} -b manpage
-			-a release-version=${project_version}
-			"${PROJECT_SOURCE_DIR}/${page}.adoc"
-			-o "${page_output}"
-		DEPENDS ${page}.adoc
-		COMMENT "Generating man page for ${page}" VERBATIM)
+	if (ASCIIDOCTOR_EXECUTABLE)
+		add_custom_command (OUTPUT ${page_output}
+			COMMAND ${ASCIIDOCTOR_EXECUTABLE} -b manpage
+				-a release-version=${project_version}
+				-o "${page_output}"
+				"${PROJECT_SOURCE_DIR}/${page}.adoc"
+			DEPENDS ${page}.adoc
+			COMMENT "Generating man page for ${page}" VERBATIM)
+	elseif (A2X_EXECUTABLE)
+		add_custom_command (OUTPUT ${page_output}
+			COMMAND ${A2X_EXECUTABLE} --doctype manpage --format manpage
+				-a release-version=${project_version}
+				-D "${PROJECT_BINARY_DIR}"
+				"${PROJECT_SOURCE_DIR}/${page}.adoc"
+			DEPENDS ${page}.adoc
+			COMMENT "Generating man page for ${page}" VERBATIM)
+	endif ()
 endforeach ()
 
 add_custom_target (docs ALL DEPENDS ${project_MAN_PAGES})
diff --git a/README.adoc b/README.adoc
index da7f3e7..2c1df33 100644
--- a/README.adoc
+++ b/README.adoc
@@ -71,7 +71,8 @@ a package with the latest development version from Archlinux's AUR.
 
 Building
 --------
-Build dependencies: CMake, pkg-config, asciidoctor, awk, liberty (included) +
+Build dependencies: CMake, pkg-config, asciidoctor or asciidoc, awk,
+                    liberty (included) +
 Runtime dependencies: openssl +
 Additionally for 'xC': curses, libffi, lua >= 5.3 (optional),
                        readline >= 6.0 or libedit >= 2013-07-12
diff --git a/xB.adoc b/xB.adoc
index 42fb4a8..ec5ecb6 100644
--- a/xB.adoc
+++ b/xB.adoc
@@ -65,9 +65,9 @@ for RPC, with the following subcommands:
 	exists, the value will be empty.  The response will be delivered in
 	the following format:
 +
-```
+....
 XB :value
-```
+....
 +
 This is particularly useful for retrieving the *prefix* string.
 
diff --git a/xC.adoc b/xC.adoc
index 221c5bc..2d791cd 100644
--- a/xC.adoc
+++ b/xC.adoc
@@ -25,9 +25,9 @@ Options
 	other formatting marks to ANSI codes retrieved from the *terminfo*(5)
 	database:
 +
-```
+....
 printf '\x02bold\x02\n' | xC -f
-```
+....
 +
 This feature may be used to preview server MOTD files.