[vala] vala-gen-introspect: Support packages without prefix

[Jürg Billeter <juergbi src gnome org>]

commit 3cf6e8d5a301af2a772d0a3e0b4cc8aa24a1cf25
Author: Travis Reitter <travis reitter collabora co uk>
Date:   Wed Apr 28 09:54:46 2010 -0700

    vala-gen-introspect: Support packages without prefix
    
    Uninstalled packages may use an empty string as prefix. Do not ignore
    valid header files when PREFIX is an empty string and the header path
    starts with a dot.
    
    Fixes bug 615119.

 vapigen/vala-gen-introspect/vala-gen-introspect.in |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/vapigen/vala-gen-introspect/vala-gen-introspect.in b/vapigen/vala-gen-introspect/vala-gen-introspect.in
index ecf3dff..538f43d 100755
--- a/vapigen/vala-gen-introspect/vala-gen-introspect.in
+++ b/vapigen/vala-gen-introspect/vala-gen-introspect.in
@@ -16,8 +16,14 @@ PKGBASE=$2/$1
 PKGPREFIX=`pkg-config --variable=prefix $PKGNAME`
 
 PKGFILES=`cat $PKGBASE.files | grep ^[/.]`
+
+# This is to avoid adding a leading / in case the prefix is ""
+if [ "x$PKGPREFIX" != "x" ]; then
+        PKGPREFIXPLUSDELIMIT="$PKGPREFIX/"
+fi
+
 PKGFILES="${PKGFILES}\
-	 `cat $PKGBASE.files | grep ^[a-zA-Z] | sed -e "s ^@$PKGPREFIX/@"`"
+	`cat $PKGBASE.files | grep ^[a-zA-Z.] | sed -e "s ^@$PKGPREFIXPLUSDELIMIT@"`"
 
 if [ -e $PKGBASE.excludes ]
 then