From 9fd6f1931df506210f3724b08be0fde08cc8b89b Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@sbcglobal.net>
Date: Fri, 16 Dec 2016 03:04:24 -0500
Subject: packages.sh x60

---
 packages.sh | 59 +++++++++++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 49 insertions(+), 10 deletions(-)

diff --git a/packages.sh b/packages.sh
index 8296644..88e4ec0 100755
--- a/packages.sh
+++ b/packages.sh
@@ -1,19 +1,56 @@
-#!/bin/bash
+#!/usr/bin/env bash
+
+# parse packages.txt
 all=($(< packages.txt sed 's/#.*//' | xargs printf -- '%s\n' | sort -u))
 grps=($(printf -- '%s\n' "${all[@]}" | sed -n 's/^g://p'))
 pkgs=($(printf -- '%s\n' "${all[@]}" | sed -n 's/^p://p'))
-igns=($(printf -- '%s\n' "${all[@]}" | sed -n 's/^i://p'))
+excl=($(printf -- '%s\n' "${all[@]}" | sed -n 's/^x://p'))
+bads=($(printf -- '%s\n' "${all[@]}" | grep -v '^[gpx]:'))
+if [[ ${#bads[@]} -gt 0 ]]; then
+	echo ' => Invalid entries in packages.txt'
+	printf '  -> %s\n' "${bads[@]}"
+	exit 1
+fi
+
+# set up tmpdir
+tmpdir="$(mktemp --tmpdir -d "${0##*/}.XXXXXXXXXX")"
+#trap "cd / && rm -rf -- $(printf '%q' "$tmpdir")" EXIT
+cd "$tmpdir"
+
+# list dependencies
+{
+	pacman -Sgq -- "${grps[@]}"|grep -vFx -f <(printf '%s\n' "${excl[@]}")
+	printf '%s\n' "${pkgs[@]}"
+} | sort -u > depends.txt
+pacman -Qq | sort -u > installed.txt
+pseudo() {
+	while read -r pkg; do
+		provider=$(pacsift --local --provides "$pkg" <&-|cut -d/ -f2)
+		if [[ -n "$provider" ]]; then
+			printf 'provided %s\n' "$pkg"
+			printf 'provider %s\n' $provider # unquoted
+		else
+			printf 'missing %s\n' "$pkg"
+		fi
+	done
+}
+comm -23 depends.txt installed.txt | pseudo > missing-or-provided.txt
+sed -n 's/^provided //p' <missing-or-provided.txt |sort -u>provided.txt
+sed -n 's/^provider //p' <missing-or-provided.txt |sort -u>provider.txt
+sed -n 's/^missing //p'  <missing-or-provided.txt |sort -u>missing.txt
+cat installed.txt <(comm -12 depends.txt provider.txt)|sort -u>listed.txt
 
+pacman -Qi|sed -n 's/^Depends On\s*://p'|xargs printf '%s\n'|sort -u>all-depends.txt
+
+# output
 echo ' => In packages.txt, but not installed'
-comm -13 \
-    <(pacman -Qq|sort -u) \
-    <({ pacman -Sgq -- "${grps[@]}"; printf '%s\n' "${pkgs[@]}"; }|sort -u) |
-sed 's|^|  -> |'
+< "$tmpdir/missing.txt" \
+sed 's|^|  -> |' 
 
 echo ' => Installed explicitly and not depended on, but not in packages.txt'
 comm -23 \
-    <(pacman -Qetq |sort -u) \
-    <({ pacman -Sgq -- "${grps[@]}"; printf '%s\n' "${pkgs[@]}"; }|sort -u) |
+     <(pacman -Qetq|sort -u) \
+     "$tmpdir/listed.txt" |
 sed 's|^|  -> |'
 
 echo ' => Installed explicitly and only optionally depended on, but not in packages.txt'
@@ -21,9 +58,11 @@ comm -23 \
     <(comm -23 \
            <(pacman -Qettq|sort -u) \
 	   <(pacman -Qetq |sort -u)) \
-    <({ pacman -Sgq -- "${grps[@]}"; printf '%s\n' "${pkgs[@]}"; }|sort -u) |
+    "$tmpdir/listed.txt" |
 sed 's|^|  -> |'
 
+comm -13 depends.txt provider.txt
+
 echo ' => Installed as dependencies, but only optionally depended on'
 comm -23 \
      <(pacman -Qdttq|sort -u) \
@@ -31,4 +70,4 @@ comm -23 \
 sed 's|^|  -> |'
 
 echo ' => Installed as dependencies, but not depended on'
-pacman -Qdtq|sort -u |sed 's|^|  -> |'
+pacman -Qdtq|sort -u|sed 's|^|  -> |'
-- 
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