[librsvg: 47/95] PropertyBag: Add an iter_cstr() that outputs &CStr, instead of &str

[Federico Mena Quintero <federico src gnome org>]

commit b6334ccb01e079a1406d9b9f3f19efd794581103
Author: Federico Mena Quintero <federico gnome org>
Date:   Tue Feb 20 18:39:29 2018 -0600

    PropertyBag: Add an iter_cstr() that outputs &CStr, instead of &str

 rust/src/property_bag.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
---
diff --git a/rust/src/property_bag.rs b/rust/src/property_bag.rs
index 2c99ed3c..c8d462c8 100644
--- a/rust/src/property_bag.rs
+++ b/rust/src/property_bag.rs
@@ -12,6 +12,8 @@ pub struct OwnedPropertyBag(HashMap<CString, CString>);
 
 pub struct PropertyBagIter<'a>(hash_map::Iter<'a, &'a CStr, &'a CStr>);
 
+pub struct PropertyBagCStrIter<'a>(hash_map::Iter<'a, &'a CStr, &'a CStr>);
+
 impl<'a> PropertyBag<'a> {
     pub unsafe fn new_from_key_value_pairs(pairs: *const *const libc::c_char) -> PropertyBag<'a> {
         let mut map = HashMap::new();
@@ -87,6 +89,10 @@ impl<'a> PropertyBag<'a> {
     pub fn iter(&self) -> PropertyBagIter {
         PropertyBagIter(self.0.iter())
     }
+
+    pub fn cstr_iter(&self) -> PropertyBagCStrIter {
+        PropertyBagCStrIter(self.0.iter())
+    }
 }
 
 impl<'a> Iterator for PropertyBagIter<'a> {
@@ -97,6 +103,14 @@ impl<'a> Iterator for PropertyBagIter<'a> {
     }
 }
 
+impl<'a> Iterator for PropertyBagCStrIter<'a> {
+    type Item = (&'a CStr, &'a CStr);
+
+    fn next(&mut self) -> Option<Self::Item> {
+        self.0.next().map(|(k, v)| (*k, *v))
+    }
+}
+
 #[no_mangle]
 pub extern fn rsvg_property_bag_new<'a>(atts: *const *const libc::c_char) -> *const PropertyBag<'a> {
     let pbag = unsafe { PropertyBag::new_from_key_value_pairs(atts) };