Merge pull request #21 from kissx/pkg_install_new2

kiss: Fix package installation bugs.

kiss

@@ -20,8 +20,9 @@ source_type() {
 }
 
 pkg_clean() {
-    rm -rf -- "$mak_dir" "$pkg_dir" \
-              "$cac_dir/manifest-$$" "$cac_dir/tar" "$cac_dir/checksums-$$"
+    rm -rf -- "$mak_dir" "$pkg_dir" "$tar_dir" \
+              "$cac_dir/manifest-$$" "$cac_dir/checksums-$$" \
+              "$cac_dir/mv" "$cac_dir/mkdir" "$cac_dir/find"
 }
 
 pkg_search() {
@@ -172,15 +173,33 @@ pkg_install() {
     [ -f "$bin_dir/$pkg" ] || args b "$name"
 
     pkg_conflicts
+    tar pxf "$bin_dir/$pkg" -C "$tar_dir/" || die "Failed to extract tarball."
 
-    # Create a backup of 'tar' so it isn't removed during
-    # package installation.
-    cp "$(command -v tar)" "$cac_dir"
+    # Create a backup of 'mv', 'mkdir' and 'find' so they aren't removed
+    # during package removal.
+    cp "$(command -v mv)"    "$cac_dir"
+    cp "$(command -v mkdir)" "$cac_dir"
+    cp "$(command -v find)"  "$cac_dir"
 
     log "Removing previous version of package if it exists."
     pkg_remove
 
-    "$cac_dir/tar" kpxf "$bin_dir/$pkg" -C "$sys_dir/" 2>/dev/null
+    cd "$tar_dir" || die "Aborting due to tar error."
+
+    # Optimization: Only find the deepest directories.
+    find . -type d -links -3 -prune | while read -r dir; do
+        mkdir -p "$sys_dir/${dir#./}"
+    done
+
+    find ./ -mindepth 1 -not -type d | while read -r file; do
+        rpath=${file#.}
+
+        [ -z "${rpath##/etc/*}" ] && [ -f "$sys_dir${rpath%/*}/${file##*/}" ] &&
+            return
+
+        mv "$file" "$sys_dir${rpath%/*}"
+    done
+
     "$sys_db/$name/post-install" 2>/dev/null
 
     log "Installed ${pkg%.tar.gz}"
@@ -195,17 +214,19 @@ pkg_remove() {
     cp "$(command -v rmdir)" "$cac_dir"
 
     while read -r file; do
-        [ "${file%/*}" = /etc ] && continue
+        [ "${file##/etc/*}" ] || continue
 
         if [ -d "$sys_dir$file" ]; then
             "$cac_dir/rmdir" "$sys_dir$file" 2>/dev/null || continue
         else
             "$cac_dir/rm" -f -- "$sys_dir$file" || log "Failed to remove $file."
-        fi && log "Removed $file"
+        fi
     done < "$sys_db/${1:-$name}/manifest"
 
     # Use the backup of 'rm' to remove 'rmdir' and itself.
     "$cac_dir/rm" "$cac_dir/rmdir" "$cac_dir/rm"
+
+    log "Removed ${1:-$name}."
 }
 
 pkg_updates() {
@@ -230,7 +251,7 @@ pkg_list() {
 }
 
 args() {
-    [ -w "$KISS_ROOT/" ] || case $1 in
+    [ -w "$sys_dir/" ] || case $1 in
         i*|r*) die "No write permissions to \$KISS_ROOT."
     esac
 
@@ -285,6 +306,7 @@ main() {
     mkdir -p "${cac_dir:=${XDG_CACHE_HOME:=$HOME/.cache}/$kiss}" \
              "${mak_dir:=$cac_dir/build-$$}" \
              "${bin_dir:=$cac_dir/bin}" \
+             "${tar_dir:=$cac_dir/extract-$$}" \
              "${pkg_db:=${pkg_dir:=$cac_dir/pkg-$$}/var/db/$kiss}" ||
              die "Couldn't create directories."