From 591843d65b12e339a2549afdd6b83702cf00c2e3 Mon Sep 17 00:00:00 2001
From: bill-auger <mr.j.spam.me@gmail.com>
Date: Tue, 12 May 2020 06:05:33 -0400
Subject: [parabola-dependents]: initial script

---
 src/maintenance-tools/parabola-dependents | 43 +++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100755 src/maintenance-tools/parabola-dependents

diff --git a/src/maintenance-tools/parabola-dependents b/src/maintenance-tools/parabola-dependents
new file mode 100755
index 0000000..8947dbf
--- /dev/null
+++ b/src/maintenance-tools/parabola-dependents
@@ -0,0 +1,43 @@
+#!/bin/bash
+
+
+IsArchRepo()
+{
+  local repo=$1 ; [[ "$repo" =~ ^(community|core|extra|multilib|testing)$ ]]
+}
+
+ListParabolaDependents()
+{
+  readonly BE_VERBOSE=$( [[ "$1" == '-v' ]] && echo 1 || echo 0 ) ; (( $BE_VERBOSE )) && shift ;
+  readonly DEP_PKG=$1
+  readonly CFG_FILE=/etc/pacman-all.conf
+  readonly CFG="--config=$CFG_FILE"
+  read -r -d '' USAGE <<-'USAGE_MSG'
+USAGE:
+  parabola-dependents [ -v ] <PACKAGE_NAME>
+
+  list all parabola packages which are dependents of a specified package
+  by default, only first-order dependents are listed, with counts of higher-order dependents
+  verbose mode (-v) will itemize all higher-order dependents
+USAGE_MSG
+
+
+  [[ -z "$DEP_PKG"    ]] && echo -e "no dependency package specified\n\n$USAGE" && return 1
+  [[ ! -f "$CFG_FILE" ]] && echo    "can not find pacman config: $CFG_FILE"     && return 1
+
+  sudo pacman $CFG -Sy ; echo -e "\nsearching ...\n\n" ;
+
+  local dependency_chain pkg repos repo
+  while read dependency_chain
+  do    pkg=$(sed 's|.*<- ||' <<<$dependency_chain)
+        repos=$(pacman $CFG -Si $pkg | grep Repository | cut -d ':' -f 2)
+        for repo in $repos
+        do  IsArchRepo $repo && echo "$repo skip $pkg" && continue
+
+            echo "$repo/$pkg $( (( $BE_VERBOSE )) && echo "[ $dependency_chain ]" )"
+        done
+  done < <(/usr/bin/pactree $CFG --sync --reverse --unique --chain $DEP_PKG) | sort
+}
+
+
+ListParabolaDependents $@ || exit 1
-- 
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