From 176d649476e4c058f56ccd8e15d4a26517f9b698 Mon Sep 17 00:00:00 2001
From: roker <roker@pep-project.org>
Date: Fri, 18 Jun 2021 12:59:55 +0200
Subject: [PATCH] add bloblist specialization. DOES NOT COMPILE, YET.

---
 src/bloblist.cc | 46 ++++++++++++++++++++++++++++++++++++
 src/bloblist.hh | 63 +++++++++++++++++++++++++++++++++++++++++++++++++
 src/types.hh    |  3 ++-
 src/wrapper.hh  |  3 ---
 4 files changed, 111 insertions(+), 4 deletions(-)
 create mode 100644 src/bloblist.cc
 create mode 100644 src/bloblist.hh

diff --git a/src/bloblist.cc b/src/bloblist.cc
new file mode 100644
index 0000000..8e22462
--- /dev/null
+++ b/src/bloblist.cc
@@ -0,0 +1,46 @@
+#include "bloblist.hh"
+
+#include <pEp/bloblist.h>
+
+namespace pEp
+{
+    template<>
+    void Wrapper<::bloblist_t*>::_free(::bloblist_t* bl)
+    {
+        ::free_bloblist(bl);
+    }
+    
+
+    template<>
+    int BlobList::size() const
+    {
+        return bloblist_length(value);
+    }
+
+    // faster than .size()==0 because it's not necessary to iterate throgh the whole list
+    template<>
+    bool BlobList::empty() const
+    {
+        return !(value && value->value);
+    }
+    
+    template<>
+    void BlobList::clear()
+    {
+        free_bloblist(value);
+        value = nullptr;
+    }
+    
+    template<>
+    void BlobList::push_back(const char*&& s)
+    {
+        auto last = stringlist_add(value, s);
+        if(value==nullptr)
+            value = last;
+    }
+
+////////////////
+
+    template class ListWrapper<::bloblist_t*, ::bloblist_t*>;
+
+} // end of namespace pEp
diff --git a/src/bloblist.hh b/src/bloblist.hh
new file mode 100644
index 0000000..2b04fda
--- /dev/null
+++ b/src/bloblist.hh
@@ -0,0 +1,63 @@
+// This file is under GNU General Public License 3.0
+// see LICENSE.txt
+
+#ifndef LIBPEPDATATYPES_BLOBLIST_HH
+#define LIBPEPDATATYPES_BLOBLIST_HH
+
+#include "wrapper.hh"
+#include <pEp/bloblist.h>
+
+namespace pEp
+{
+
+
+template<>
+class ListWrapper<::bloblist_t*, void> : public Wrapper<::bloblist_t*>
+{
+public:
+    typedef ::bloblist_t Blob;
+    typedef Wrapper<Blob*> Base;
+    typedef ListWrapper<Blob*, void> LW;
+
+    
+    // does not own the *value
+    class iterator
+    {
+    public:
+        iterator() = default;
+        
+        iterator operator++() { return (value ? value = value->next : value); }
+        Blob&    operator*()  { return *value; }
+        Blob*    operator->() { return  value; }
+        const Blob&    operator*()  const { return *value; }
+        const Blob*    operator->() const { return  value; }
+        bool     operator==(const iterator& other) const { return value == other.value; }
+        bool     operator!=(const iterator& other) const { return value != other.value; }
+
+    private:
+        iterator(::bloblist_t* _t) : value{_t} {}
+        ::bloblist_t* value = nullptr;
+        friend class ListWrapper<::bloblist_t*, void>;
+    };
+    
+    
+    using Base::value;
+    
+    ListWrapper() : Base() {}
+    
+    
+    iterator begin()     { return iterator{value}; }
+    iterator end() const { return iterator{}; }
+    int  size()    const;
+    bool empty()   const;
+    
+    void clear();
+    void push_back(Blob&&);
+    void emplace_back(char* data, size_t size, const char* mime_type, const char* filename); 
+};
+
+    using BlobList   = ListWrapper<::bloblist_t*, void>;
+
+} // end of namespace pEp
+
+#endif // LIBPEPDATATYPES_BLOBLIST_HH
diff --git a/src/types.hh b/src/types.hh
index 8a6dbd9..5239615 100644
--- a/src/types.hh
+++ b/src/types.hh
@@ -5,6 +5,7 @@
 #define LIBPEPDATATYPES_TYPES_HH
 
 #include "wrapper.hh"
+#include "bloblist.hh" // full specialization of ListWrapper<bloblist_t*, void>.
 
 #include <stdexcept>
 #include <pEp/pEpEngine.h>
@@ -24,7 +25,7 @@ namespace pEp
     using StringPairList = ListWrapper<::stringpair_list_t*, ::stringpair_t*>;
     
     using StringList = ListWrapper<::stringlist_t*, const char*>;
-    using BlobList   = ListWrapper<::bloblist_t*, ::bloblist_t*>;
+    using BlobList   = ListWrapper<::bloblist_t*, void>;
     
     using Message = Wrapper<::message*>;
 
diff --git a/src/wrapper.hh b/src/wrapper.hh
index 2c42aba..6c80fe0 100644
--- a/src/wrapper.hh
+++ b/src/wrapper.hh
@@ -156,11 +156,8 @@ public:
     void clear();
     void push_back(Element&&);
     void push_back(Wrapper<Element>&&);
-    
 };
 
-
-
 } // end of namespace pEp
 
 #endif // LIBPEPDATATYPES_WRAPPER_HH