[vlc-devel] [PATCH 04/21] input/stream: stream-fragments: add helper to encode fragment

[Filip Roséen]

Given the specification of stream-fragments, we will need to be able
to url-encode entities N number of times in order to implement the
functionality outlined by the spec.

This commit adds "RecursiveEncode" which does just that; see the
associated documentation for more information.
---
 src/input/stream.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/src/input/stream.c b/src/input/stream.c
index 0510adf..f39afab 100644
--- a/src/input/stream.c
+++ b/src/input/stream.c
@@ -37,6 +37,7 @@
 #include <vlc_access.h>
 #include <vlc_charset.h>
 #include <vlc_interrupt.h>
+#include <vlc_url.h>
 
 #include <libvlc.h>
 #include "stream.h"
@@ -94,6 +95,20 @@ typedef struct stream_priv_t
 static int EscapeFragment( char** out, char const* data );
 
 /**
+ * \ingroup stream_fragments_internals
+ * \internal
+ *
+ * Function to url-encode the requested data \p level number of times.
+ *
+ * \param out on success, *out will refer to an allocated string with the
+ *            result of the operation.
+ * \param data the data that is to be encoded.
+ * \param level the number of times it should be recursively url-encoded.
+ * \return VLS_SUCCESS on success, negative value on error
+ **/
+static int RecursiveEncode( char** out, char const* data, size_t level );
+
+/**
  * Allocates a VLC stream object
  */
 stream_t *vlc_stream_CommonNew(vlc_object_t *parent,
@@ -743,3 +758,20 @@ static int EscapeFragment( char** out, char const* data )
 
     return VLC_SUCCESS;
 }
+
+static int RecursiveEncode( char** out, char const* data, size_t level )
+{
+    char* encoded = strdup( data );
+
+    for( char* tmp; level && encoded; --level )
+    {
+        tmp = vlc_uri_encode( encoded );
+        free( encoded );
+        encoded = tmp;
+    }
+
+    if( likely( *out = encoded ) )
+        return VLC_SUCCESS;
+
+    return VLC_ENOMEM;
+}
-- 
2.9.2