contrib/paclog-pkglist: rework as bash wrapping awk

Avoid some pain in awk's limited handling of command line arguments by
wrapping this in a Bash script. We also default to
@localstatedir@/log/pacman.log when no args are specified, meaning that
-h or --help is required to get the help message.

Signed-off-by: Dave Reisner <dreisner@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 68 insertions, 0 deletions

diff --git a/contrib/paclog-pkglist.in b/contrib/paclog-pkglist.in
new file mode 100755
index 00000000..4cf5e341
--- /dev/null
+++ b/contrib/paclog-pkglist.in
@@ -0,0 +1,68 @@
+#!/bin/bash
+#
+# paclog-pkglist - Parse a log file into a list of currently installed packages
+#
+# Copyright (C) 2011 Dave Reisner <dave@archlinux.org>
+#
+# 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, see <http://www.gnu.org/licenses/>.
+
+export TEXTDOMAIN='pacman'
+export TEXTDOMAINDIR='/usr/share/locale'
+declare logfile=${1:-@localstatedir@/log/pacman.log}
+
+if [[ $1 ]]; then
+  if [[ $1 = -@(h|-help) ]]; then
+    printf 'usage:   %s [pacman log]\n' "${0##*/}"
+    printf 'example: %s @localstatedir@/log/pacman.log\n' "${0##*/}"
+    printf '\ndefaults to: @localstatedir@/log/pacman.log\n'
+    exit 0
+  elif [[ ! -e $logfile ]]; then
+    printf $"target not found: %s\n" "$1"
+    exit 1
+  fi
+fi
+
+<"$logfile" awk '
+{
+  action  = $3
+  pkgname = $4
+  pkgver  = $5
+  upgver  = $7
+}
+
+NF == 5 && action == "installed" {
+  gsub(/[()]/, "", pkgver)
+  pkg[pkgname] = pkgver
+  next
+}
+
+NF == 7 && action == "upgraded" {
+  sub(/\)/, "", upgver)
+  pkg[pkgname] = upgver
+  next
+}
+
+NF == 5 && action == "removed" {
+  pkg[pkgname] = -1
+}
+
+END {
+  for (i in pkg) {
+    if (pkg[i] != -1) {
+      printf "%s %s\n",i,pkg[i]
+    }
+  }
+}' | sort
+
+# vim: set ts=2 sw=2 noet: