From eb2e898b093effbbb61c5a2ffa7eb731ffc6d6c5 Mon Sep 17 00:00:00 2001
From: Esteban Carnevale <alfplayer@mailoo.org>
Date: Tue, 16 Dec 2014 15:41:57 -0300
Subject: libredbdiff-standalone: Multiple fixes and improvements

---
 libredbdiff-standalone | 93 +++++++++++++++++++++++++++++---------------------
 1 file changed, 55 insertions(+), 38 deletions(-)

diff --git a/libredbdiff-standalone b/libredbdiff-standalone
index ba3300a..71da50e 100755
--- a/libredbdiff-standalone
+++ b/libredbdiff-standalone
@@ -27,41 +27,47 @@ repos="libre pcr libre-multilib nonprism"
 error() { echo -e "Error. $@" > /dev/stderr ; exit 1; }
 
 help() {
-	echo -e "${progname}. Show [libre] packages that need to be updated from Arch repositories.\n\nUsage:\nlibredbdiff\t\tInitialize (first run) or update pacman databases\nlibredbdiff -n\t\tPrint results for all Parabola repos\nlibredbdiff -n (Parabola repository)\t\tPrint results for the specified Parabola repository"
+	echo -e "${progname}. Show [libre] packages that need to be updated from Arch repositories.\n\nUsage:\nlibredbdiff\t\tInitialize (first run) or update pacman databases\nlibredbdiff -n\t\tPrint results for all Parabola repos\nlibredbdiff -n [repository]\t\tPrint results for the specified Parabola repository"
 }
 
 while true ; do
-	if [[ $1 =~ ^(-n|--noupdate)$ ]] ; then
-		UPDATE=0
-		shift
-	elif [[ $# == 1 && $1 =~ ^(-h|--help)$ ]] ; then
-		help
-		exit
-	else
-		if [[ ! $UPDATE ]] ; then
-			UPDATE=1
-		fi
-		repo_arg="$1"
-		if [[ $2 ]] ; then
-			help
-			error "Bad arguments. Nothing done."
-		else
-			break
-		fi
-	fi
+  if [[ $1 =~ ^(-n|--noupdate)$ ]] ; then
+    update=0
+    shift
+  elif [[ $1 =~ ^(-h|--help)$ ]] ; then
+    echo "-h or --help was specified as command argument"
+    help
+    exit
+  elif [[	$update == 0 ]] ; then
+    if [[ $2 ]] ; then
+      help
+      error "Bad arguments. Nothing done."
+    elif [[ $1 ]] ; then
+      repo_arg="$1"
+      for repo in ${repos} ; do
+        if [[ "$repo" == "$repo_arg" ]] ; then
+          found=1
+          break
+        fi
+      done
+      if [[ $found != 1 ]] ; then
+        error "The specified Parabola repo \"${repo_arg}\" cannot be compared. It's not in the list of repos in the configuration variable \"repos\"."
+      fi
+      break
+    elif [[ ! $1 ]] ; then
+      break
+    fi
+  else
+    break
+  fi
 done
 
 
-enable_repo() {
-    repo="$1"
-    echo "Enabling repo \"$repo\" in ${conffile}"
-    sed -i "s/\#\[$repo\]/[$repo]/" "${conffile}"
-    sed -i "\/\[$repo\]/,+1 s/#Include/Include/" "${conffile}"
-}
+if [[ $update != 0 ]] ; then
+  if [[ $EUID != 0 ]] ; then
+    error "The current user is not the user \"root\". To initialize $progname or update $progname pacman databases, the script must be run as root. Nothing done."
+  fi
 
-if [[ $UPDATE == 1 ]] ; then
-  [[ $EUID != 0 ]] && { error "To initialize $progname or update $progname pacman databases, the script must be run as root. Nothing done." ; }
- 
   [[ -d "$baseconfpath" && -d "$basedbpath" && -d "$dbpath" && -d "$dbpatharch" && -e "${conffile}" && -e "${conffilearch}" && -e "${mirrorlist}" && -e  "${mirrorlist}" ]] || { echo "${progname} files are missing. Initializing." ; init=1 ; }
 
   createdir() {
@@ -77,6 +83,14 @@ if [[ $UPDATE == 1 ]] ; then
   createdir "$dbpath"
   createdir "$dbpatharch"
 
+  enable_repo() {
+    repo="$1"
+    conffile_arg="$2"
+    echo "Enabling repo \"$repo\" in ${conffile_arg}"
+    sed -i "s/\#\[$repo\]/[$repo]/" "${conffile_arg}"
+    sed -i "\/\[$repo\]/,+1 s/#Include/Include/" "${conffile_arg}"
+  }
+
   downloadfile() {
     if [[ ! -e $1 ]] ; then
       echo "$2"
@@ -139,7 +153,7 @@ if [[ $UPDATE == 1 ]] ; then
   exit 0
 else
   filenotfound() {
-	  [[ ! -r $1 ]] && { error "Could not read $1. Nothing done.\nIt may be necessary to run libredbdiff without arguments as root to initialize ${progname}." ; }
+	  [[ ! -r $1 ]] && { error "Could not read $1. Nothing done.\nIt could be necessary to run libredbdiff without arguments as root to initialize ${progname}." ; }
   }
   filenotfound "${dbpath}"
   filenotfound "${dbpatharch}"
@@ -147,7 +161,9 @@ else
   filenotfound "${conffilearch}"
   filenotfound "${mirrorlist}"
   filenotfound "${mirrorlistarch}"
-fi
+fi   # close "if [[ $update != 0 ]] ; then"
+
+if [[ $update == 0 ]] ; then
 
 unset provides ver verarch
 declare -Ax provides ver verarch
@@ -203,11 +219,12 @@ print_cmp() {
   done
 }
 
-if [[ ${repo_arg} ]] ; then
-  print_cmp "${repo_arg}"
-else
-  for repo in ${repos} ; do
-    echo "[$repo]"
-    print_cmp "$repo"
-  done
-fi
+  if [[ ${repo_arg} ]] ; then
+    print_cmp "${repo_arg}"
+  else
+    for repo in ${repos} ; do
+      echo "[$repo]"
+      print_cmp "$repo"
+    done
+  fi
+fi   # close "if [[ $update == 0 ]] ; then"
-- 
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