From ebf34c455e973d5f41efe20cd4883772a34aa650 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Mon, 30 Jan 2012 12:26:16 -0500
Subject: Write and document oh-installdocs.

---
diff --git a/man/Makefile.in b/man/Makefile.in
index 17db5bf..3ea062c 100644
--- a/man/Makefile.in
+++ b/man/Makefile.in
@@ -28,7 +28,8 @@ MANDIR = @mandir@
 .SUFFIXES:
 
 OBJS = opkbuild.1 oh-checkbuilddeps.1 oh-applypatches.1 oh-copyconfig.1 \
-       oh-strip.1 oh-installfiles.1 oh-gencontrol.1 oh-buildopk.1
+       oh-strip.1 oh-installfiles.1 oh-installdocs.1 oh-gencontrol.1 \
+       oh-buildopk.1
 
 .PHONY: all
 all: $(OBJS)
diff --git a/man/oh-installdocs.1 b/man/oh-installdocs.1
new file mode 100644
index 0000000..ed21653
--- /dev/null
+++ b/man/oh-installdocs.1
@@ -0,0 +1,30 @@
+.\" Author: Patrick "P. J." McDermott
+.TH oh-installdocs 1 "2012-01-30" "opkhelper-0.1.0" "opkg Build Helper Tools"
+.SH NAME
+oh-installdocs \- Install package documentation into a binary package staging
+area.
+.SH SYNOPSIS
+.B oh-installdocs
+.IR providing_pkg
+.SH DESCRIPTION
+.B oh-installdocs
+copies package documentation files from the source package directory to the
+staging area of the providing binary package and makes links in all other binary
+packages to the provided documentation files.  The providing binary package
+should be depended on by all other binary packages built by the same source
+package.
+.SH COPYRIGHT
+Copyright (C) 2012 Patrick "P. J." McDermott
+.sp
+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 3 of the License, or
+(at your option) any later version.
+.sp
+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.
+.sp
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/src/Makefile.in b/src/Makefile.in
index 77541c0..dfbb9d7 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -28,7 +28,8 @@ BINDIR = @bindir@
 .SUFFIXES:
 
 OBJS = opkbuild oh-checkbuilddeps oh-applypatches oh-copyconfig \
-       oh-strip oh-installfiles oh-gencontrol oh-buildopk
+       oh-strip oh-installfiles oh-installdocs oh-gencontrol \
+       oh-buildopk
 
 .PHONY: all
 all: $(OBJS)
diff --git a/src/oh-installdocs b/src/oh-installdocs
new file mode 100644
index 0000000..f29afa6
--- /dev/null
+++ b/src/oh-installdocs
@@ -0,0 +1,59 @@
+#! /bin/sh
+#
+# opkhelper
+# src/oh-installdocs
+# Install package documentation into a binary package staging area.
+#
+# Copyright (C) 2012 Patrick "P. J." McDermott
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>.
+
+print_usage()
+{
+	printf 'Usage: %s providing_pkg\n' "$1"
+}
+
+error()
+{
+	printf 'oh-installdocs: Error: %s\n' "${1}" >&2
+	exit 1
+}
+
+if [ ${#} -ne 1 ]; then
+	print_usage ${0} >&2
+	exit 1
+fi
+
+# Iterate through packages that have been installed.
+for pkgdir in *.data/; do
+	pkg=${pkgdir%'.data/'}
+	mkdir -p ${pkg}.data/usr/share/doc/
+	if [ ${pkg} = ${1} ]; then
+		# Make the providing package provide the documentation files.
+		printf 'oh-installdocs: Installing package documentation into package "%s"...\n' \
+			"${pkg}"
+		mkdir -p ${pkg}.data/usr/share/doc/${pkg}
+		[ ! -f ../copyright ] && error 'Missing "copyright" file'
+		[ ! -f ../changelog ] && error 'Missing "changelog" file'
+		cp ../copyright ../changelog ${pkgdir}/usr/share/doc/${pkg} || \
+			error 'Cannot copy documentation files'
+	else
+		# Make dependent packages link to the providing package's documentation
+		# directory.
+		printf 'oh-installdocs: Making link to documentation in package "%s"...\n' \
+			"${pkg}"
+		ln -s /usr/share/doc/${1} ${pkgdir}/usr/share/doc/${pkg} || \
+			error 'Cannot make link to documentation files'
+	fi
+done
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