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From b7f00d9fc5f4c948b3b412fa22488517e71a2987 Mon Sep 17 00:00:00 2001
From: Alexandre Rostovtsev <tetromino@gmail.com>
Date: Sun, 27 Mar 2016 17:11:59 +0200
Subject: [PATCH] Enable compatibility with traditional man (#648854)
As of commit 46a82ade3e6f0fac8f08b18e7fc23d8665f6f728, Yelp runs
"man -Z -Tutf8 -EUTF-8 [FILE]" to obtain the groff intermediate format
of the man page. However, the only implementation of man that accepts
these options is man-db (used by Debian, Fedora, SUSE & Ubuntu).
The traditional Linux man used by other distros and man implementations
on non-Linux Unixes (FreeBSD, Solaris) do not have command-line options
for outputting groff intermediate format.
Therefore, on systems that do not use man-db, we need to manually
uncompress the nroff source file and feed it to groff. This is best done
using a small shell script (/usr/libexec/yelp-groff), both for for
clarity and for ease of modification on systems with weird man setups.
Signed-off-by: Alexandre Rostovtsev <tetromino@gmail.com>
Signed-off-by: Ole Reifschneider <tranquility@gentoo.org>
---
Makefile.am | 2 ++
libyelp/yelp-groff | 49 +++++++++++++++++++++++++++++++++++++++++++++++
libyelp/yelp-man-parser.c | 2 +-
3 files changed, 52 insertions(+), 1 deletion(-)
create mode 100755 libyelp/yelp-groff
diff --git a/Makefile.am b/Makefile.am
index 30eba2c..b87f2b2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -6,6 +6,7 @@ BUILT_SOURCES = \
$(nodist_libyelp_libyelp_la_SOURCES)
lib_LTLIBRARIES = libyelp/libyelp.la
+libexec_SCRIPTS = libyelp/yelp-groff
libyelp_libyelp_la_SOURCES = \
libyelp/yelp-bookmarks.c \
@@ -58,6 +59,7 @@ libyelp_libyelp_la_CFLAGS = \
libyelp_libyelp_la_CPPFLAGS = \
-DDATADIR=\""$(datadir)"\" \
+ -DLIBEXECDIR=\"$(libexecdir)\" \
-DYELP_ICON_PATH=\"$(YELP_ICON_PATH)\" \
-DYELP_WEB_EXTENSIONS_DIR=\""$(pkglibdir)/"web-extensions\" \
-I$(top_builddir)/libyelp
diff --git a/libyelp/yelp-groff b/libyelp/yelp-groff
new file mode 100755
index 0000000..5348024
--- /dev/null
+++ b/libyelp/yelp-groff
@@ -0,0 +1,49 @@
+#!/bin/sh
+#
+# Copyright (c) 2011 Alexandre Rostovtsev <tetromino@gmail.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public
+# License along with this program; if not, write to the
+# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301, USA.
+#
+###
+#
+# Process the requested compressed source nroff file and output groff
+# intermediate format.
+#
+
+filename=$1
+
+if [ -z ${filename} ] ; then
+ echo "Usage: yelp-groff [FILE]" >&2
+ echo "Process a man FILE and output groff intermediate format."
+ exit 1
+fi
+
+# If "man -Z -Tutf8 -EUTF-8" works (i.e. if man is man-db), use that.
+man -Z -Tutf8 -EUTF-8 ${filename} 2>/dev/null && exit 0
+
+# Otherwise, manually uncompress the file ...
+cat="cat"
+case ${filename} in
+ *.bz2) cat="bzip2 -c -d" ;;
+ *.gz) cat="gunzip -c" ;;
+ *.lzma) cat="unlzma -c -d" ;;
+ *.xz) cat="unxz -c" ;;
+ *.Z) cat="zcat" ;;
+esac
+
+# ... and run groff to get the intermediate format; preprocess with tbl
+# unless MANROFFSEQ is defined.
+${cat} ${filename} | groff -${MANROFFSEQ:-t} -man -Z -Tutf8
diff --git a/libyelp/yelp-man-parser.c b/libyelp/yelp-man-parser.c
index 46073a2..792e695 100644
--- a/libyelp/yelp-man-parser.c
+++ b/libyelp/yelp-man-parser.c
@@ -369,7 +369,7 @@ get_troff (gchar *path, GError **error)
{
gint ystdout;
GError *err = NULL;
- const gchar *argv[] = { "man", "-Z", "-Tutf8", "-EUTF-8", path, NULL };
+ const gchar *argv[] = { LIBEXECDIR "/yelp-groff", path, NULL };
gchar **my_argv;
/* g_strdupv() should accept a "const gchar **". */
--
2.7.4
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