redo the library system; avoid hard-coded paths

 * install all library files to $(libexecdir)/libretools, instead of
   - $(bindir)
   - $(datadir)/libretools
   - $(datadir)/devtools
 * symlink the executable library files into $(bindir)
 * add the tool `librelib`
 * instead of ". /path/to/lib.sh", use ". $(librelib lib.sh)"
 * mark all libraries with shebangs of what options they support
 * move blacklist.sh to libreblacklist

1 files changed, 101 insertions, 0 deletions

diff --git a/src/lib/libreblacklist b/src/lib/libreblacklist
new file mode 100755
index 0000000..2f73a06
--- /dev/null
+++ b/src/lib/libreblacklist
@@ -0,0 +1,101 @@
+#!/bin/bash -euE
+#!/bin/bash
+#   Copyright (c) 2013 by Luke Shumaker <lukeshu@sbcglobal.net>
+#
+#   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/>.
+
+# make sure XDG_CACHE_HOME is set
+. $(librelib conf.sh)
+
+# Usage: blacklist-normalize <$file
+# Normalizes the syntax of the blacklist on stdin.
+blacklist-normalize() {
+	sed -e 's/^[^:]*$/&::/' -e 's/^[^:]*:[^:]*$/&:/'
+}
+
+# Usage: blacklist-cat
+# Prints the blacklist
+# Uses the chache, but downloads it if it doesn't exist. Also normalizes the
+# blacklist for easier parsing.
+blacklist-cat() {
+	local file="$XDG_CACHE_HOME/libretools/blacklist.txt"
+	if ! [[ -e $file ]]; then
+		# exit on failure, whether set -e or not
+		blacklist-update || return $?
+	fi
+	blacklist-normalize < "$file"
+}
+
+# Usage: blacklist-update
+# Updates (or creates) the cached copy of the blacklist
+blacklist-update() (
+	set -euE # allow it to not be set globally
+	. libremessages
+	load_files libretools
+	check_vars BLACKLIST
+
+	local remote_blacklist="$BLACKLIST"
+	local local_blacklist="$XDG_CACHE_HOME/libretools/blacklist.txt"
+
+	stat_busy "Downloading blacklist of proprietary software packages"
+
+	mkdir -p "${local_blacklist%/*}"
+	if wget -N -q -O "${local_blacklist}.part" "$remote_blacklist" 2>/dev/null; then
+		stat_done
+		mv "${local_blacklist}.part" "$local_blacklist"
+	else
+		stat_done
+		rm "${local_blacklist}.part"
+		if [[ -e "$local_blacklist" ]]; then
+			warning "Using local copy of blacklist"
+		else
+			error "Download failed, exiting"
+			return 1
+		fi
+
+	fi
+)
+
+# Usage: blacklist-cat | blacklist-lookup $pkgname
+# Filters to obtain the line for $pkgname from the blacklist on stdin.
+# Exits successfully whether a line is found or not.
+blacklist-lookup() {
+	local pkg=$1
+	# we accept that $pkg contains no regex-nes
+	blacklist-cat | grep "^$pkg:" || true
+}
+
+# Usage: blacklist-{cat|lookup} | blacklist-get-pkg
+# Outputs only the package name field of the blacklist line(s) on stdin.
+blacklist-get-pkg() {
+	cut -d: -f1
+}
+
+# Usage: blacklist-{cat|lookup} | blacklist-get-rep
+# Outputs only the replacement package field of the blacklist line(s) on stdin.
+blacklist-get-rep() {
+	cut -d: -f2
+}
+
+# Usage: blacklist-{cat|lookup} | blacklist-get-reason
+# Outputs only the reason field of the blacklist line(s) on stdin.
+blacklist-get-reason() {
+	cut -d: -f3-
+}
+
+if [[ "${0##*/}" == libreblacklist ]]; then
+	_blacklist_cmd=$1
+	shift
+	"blacklist-$_blacklist_cmd" "$@"
+fi