From 5c61846e16872fe524836e3a4c1c60b1d0f7d3a4 Mon Sep 17 00:00:00 2001
From: "Lucas C. Villa Real" <lucasvr@gmail.com>
Date: Fri, 30 Dec 2016 23:25:47 -0200
Subject: Improve guessing of /opt hierarchy: when multiple RPM files are
 provided as input, we now list the contents of all RPMs at once to determine
 how to create the /opt symlinks of the uncompressed packages.

---
 bin/InstallPackage-RPM | 38 +++++++++++++++++++++++++++++++-------
 1 file changed, 31 insertions(+), 7 deletions(-)

(limited to 'bin/InstallPackage-RPM')

diff --git a/bin/InstallPackage-RPM b/bin/InstallPackage-RPM
index ae93772..3da39c6 100755
--- a/bin/InstallPackage-RPM
+++ b/bin/InstallPackage-RPM
@@ -58,6 +58,28 @@ function uncompress_rpm() {
     rm -f -- "$cpiofile"
 }
 
+function determine_flattening_level() {
+    local rootdirs="bin$\|sbin$\|lib$\|lib64$\|libexec$\|include$\|share$"
+    local filenames=$(for i in "${rpmfiles[@]}"; do rpminfo --filenames $i; done)
+
+    Log_Verbose "$filenames"
+    if echo "$filenames" | grep -q "/opt/$rootdirs"
+    then
+        # 1-level /opt hierarchy
+        echo "1"
+    elif echo "$filenames" | grep -q "/opt/[^/]*/$rootdirs"
+    then
+        # 2-level /opt hierarchy
+        echo "2"
+    elif echo "$filenames" | grep -q "/opt"
+    then
+        # TODO Make an educated guess based on where the first non-directory file object
+        # is located.
+        Log_Error "Could not determine this package's /opt structure, assuming 2-level"
+        echo "2"
+    fi
+}
+
 function flatten_rpm() {
     local rpmfile="$1"
 
@@ -131,20 +153,15 @@ function flatten_rpm() {
         # Prevent the creation of backlinks to directories that would be pruned later on
         find share -type d | xargs rmdir -p --ignore-fail-on-non-empty
         rmdir * 2> /dev/null
-
-        rootdirs="^bin$\|^sbin$\|^lib$\|^lib64$\|^libexec$\|^include$\|^share$"
         mkdir -p Resources/Unmanaged/opt
-        if ls ./opt/* 2> /dev/null | grep -q "$rootdirs"
+        if [ "$flatteninglevel" = "1" ]
         then
             Log_Verbose "Flattening 1-level /opt directory"
             flatten_opt_1_level
-        elif ls ./opt/*/* 2> /dev/null | grep -q "$rootdirs"
+        elif [ "$flatteninglevel" = "2" ]
         then
             Log_Verbose "Flattening 2-level /opt directory"
             flatten_opt_2_levels
-        else
-            Log_Error "Could not determine this package's /opt structure, assuming 2-level"
-            flatten_opt_2_levels
         fi
         rm -rf -- ./opt
     fi
@@ -433,6 +450,13 @@ unset programname
 unset programversion
 unset target
 
+# Determine the flattening level of /opt. In other words, whether
+# we have something like:
+# /opt/pkgname/{bin,sbin...}            (1-level), or
+# /opt/vendorname/pkgname/{bin,sbin...} (2-level)
+
+flatteninglevel=$(determine_flattening_level)
+
 # Installation pipeline
 for entry in "${rpmfiles[@]}"
 do
-- 
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