From 8f1f7dabfd08c8878fde40110d549fb661413952 Mon Sep 17 00:00:00 2001
From: mid-kid <esteve.varela@gmail.com>
Date: Sun, 15 Jan 2017 17:22:23 +0100
Subject: [PATCH] Allow usage of packages instead of installed info in /var/log
 for convert32pkg.sh

---
 convert32pkg.sh | 95 +++++++++++++++++++++++++++++++++----------------
 1 file changed, 64 insertions(+), 31 deletions(-)

diff --git a/convert32pkg.sh b/convert32pkg.sh
index db9fa67..622f909 100755
--- a/convert32pkg.sh
+++ b/convert32pkg.sh
@@ -4,21 +4,18 @@ pkginfodir='/var/log/packages/'
 pkgscriptdir='/var/log/scripts/'
 
 if [ "$#" -lt 1 ]; then
-    echo "Usage: $0 <package>" 1>&2
+    echo "Usage: $0 <package32> [package64]" 1>&2
     exit 1
 fi
 
-pkg="$1"
-
-temp="$(mktemp -d)"
-trap "rm -rf '$temp'" EXIT
-
-tar xf "$pkg" -C "$temp"
+pkg32="$(realpath "$1")"
+unset pkg64
+[ "$2" ] && pkg64="$(realpath "$2")"
 
 # Extract all package info
 # See /sbin/installpkg
-pkgbase="$(echo "$pkg" | sed -e 's?.*/??;s/\.t[bglx]z$//')"
-pkgext="$(echo "$pkg" | sed -e 's?.*/??;s/.*\.\(t[bglx]z\)$/\1/')"
+pkgbase="$(echo "$pkg32" | sed -e 's?.*/??;s/\.t[bglx]z$//')"
+pkgext="$(echo "$pkg32" | sed -e 's?.*/??;s/.*\.\(t[bglx]z\)$/\1/')"
 pkgname="$(echo "$pkgbase" | sed -e 's?-[^-]*-[^-]*-[^-]*$??')"
 pkgver="$(echo "$pkgbase" | sed -e 's?.*-\([^-]*\)-[^-]*-[^-]*$?\1?')"
 pkgarch="$(echo "$pkgbase" | sed -e 's?.*-[^-]*-\([^-]*\)-[^-]*$?\1?')"
@@ -26,31 +23,67 @@ pkgbuild="$(echo "$pkgbase" | sed -e 's?.*-[^-]*-[^-]*-\([^-]*\)$?\1?')"
 
 pkginfo="$pkginfodir/$pkgname-$pkgver-x86_64-$pkgbuild"
 pkgscript="$pkgscriptdir/$pkgname-$pkgver-x86_64-$pkgbuild"
-if [ ! -f "$pkginfo" ]; then
-    echo "Package $pkgname-$pkgver-x86_64-$pkgbuild is not installed. Can't proceed." 1>&2
-    exit 1
-fi
 
-# See /sbin/removepkg
-if fgrep "./" "$pkginfo" 1> /dev/null 2>&1; then
-    TRIGGER="^\.\/"
+case "$pkgext" in
+    tgz) tool=gzip ;;
+    tbz) tool=bzip2 ;;
+    tlz) tool=lzma ;;
+    txz) tool=xz ;;
+esac
+
+temp="$(mktemp -d)"
+trap "rm -rf '$temp'" EXIT
+
+cd "$temp"
+explodepkg "$pkg32"
+
+# Remove all files present in the x86_64 package
+if [ "$pkg64" ]; then
+    $tool -cd "$pkg64" | tar-1.13 t | grep -v "^install/" | while read -r file; do
+        rm -vf "./$file" 2> /dev/null || true
+    done
 else
-    TRIGGER="FILE LIST:"
+    if [ ! -f "$pkginfo" ]; then
+        echo "Package '$pkgname-$pkgver-x86_64-$pkgbuild' is not installed. Can't proceed." 1>&2
+        exit 1
+    fi
+
+    # See /sbin/removepkg
+    if fgrep "./" "$pkginfo" 1> /dev/null 2>&1; then
+        TRIGGER="^\.\/"
+    else
+        TRIGGER="FILE LIST:"
+    fi
+    sed -n "/$TRIGGER/,/^$/p" "$pkginfo" | fgrep -v "FILE LIST:" | grep -v "^install/" | while read -r file; do
+        rm -vf "./$file" 2> /dev/null || true
+    done
 fi
 
-# Remove all files present in the x86_64 package
-sed -n "/$TRIGGER/,/^$/p" "$pkginfo" | fgrep -v "FILE LIST:" | grep -v "^install/" | sort -u | while read -r file; do
-    rm -vf "$temp/$file" 2> /dev/null || true
-done
-find "$temp" -mindepth 1 -type d -empty -delete
+# Clean empty directories
+find . -mindepth 1 -type d -empty -delete
 
 # Remove all symlinks present in the x86_64 package
-# See /sbin/removepkg
-sed -n -e 's,^[ ]*( [ ]*cd[ ]* .* [ ]*; [ ]*\(rm\|ln\) [ ]*-\(rf\|sf\)[ ]* .* [ ]*)[ ]*$,&,p' -e 's,^[ ]*config .*[ ]*,&,p' "$pkgscript" > "$temp/install/doinst"
-fgrep -vxf "$temp/install/doinst" "$temp/install/doinst.sh" > "$temp/install/doinst.sh.new"
-mv "$temp/install/doinst.sh.new" "$temp/install/doinst.sh"
-rm -f "$temp/install/doinst"
-
-( cd "$temp"
-    makepkg -l y -c n "$OLDPWD/$pkgname-compat32-$pkgver-x86_64-$pkgbuild.$pkgext"
-)
+if [ -f install/doinst.sh ]; then
+    if [ "$pkg64" ]; then
+        if ! $tool -cd "$pkg64" | tar-1.13 xO install/doinst.sh > install/doinst.64; then
+            echo "Failed to extract install/doinst.sh from '$pkg64'. Aborting." 1>&2
+            exit 1
+        fi
+    else
+        if [ ! -f "$pkgscript" ]; then
+            echo "Package '$pkgname-$pkgver-x86_64-$pkgbuild' is installed but has no installation script. Can't proceed." 1>&2
+            exit 1
+        fi
+        cp "$pkgscript" install/doinst.64
+    fi
+
+    # Extract all lines treating with symlinks. See /sbin/removepkg
+    sed -n -e 's,^[ ]*( [ ]*cd[ ]* .* [ ]*; [ ]*\(rm\|ln\) [ ]*-\(rf\|sf\)[ ]* .* [ ]*)[ ]*$,&,p' -e 's,^[ ]*config .*[ ]*,&,p' install/doinst.64 > install/doinst
+
+    # Remove all symlinks present in the x86_64 package
+    fgrep -vxf install/doinst install/doinst.sh > install/doinst.sh.new
+    mv install/doinst.sh.new install/doinst.sh
+    rm -f install/doinst install/doinst.64
+fi
+
+makepkg -l y -c n "$OLDPWD/convert32-$pkgname-$pkgver-x86_64-$pkgbuild.$pkgext"