add non allocating base64 encoding API

1 files changed, 34 insertions, 1 deletions

diff --git a/include/nsutils/base64.h b/include/nsutils/base64.h
index 6dba643..fb26426 100644
--- a/include/nsutils/base64.h
+++ b/include/nsutils/base64.h
@@ -28,7 +28,7 @@
  * \param input_length The length of the source data.
  * \param output The buffer to recive data into, the caller must free.
  * \param output_length The length of data placed in \a output
- * \return NSERROR_OK on success and \a output updated else error code.
+ * \return NSUERROR_OK on success and \a output updated else error code.
  */
 nsuerror nsu_base64_encode_alloc(const uint8_t *input,
                                  size_t input_length,
@@ -38,6 +38,22 @@ nsuerror nsu_base64_encode_alloc(const uint8_t *input,
 /**
  * Base 64 encode data.
  *
+ * encode source data into buffer it using the Base64 encoding.
+ *
+ * \param input The source data to encode.
+ * \param input_length The length of the source data.
+ * \param output The output buffer
+ * \param output_length The size of the \a output buffer on entry updated with length written on exit.
+ * \return NSUERROR_OK on success and \a output_length updated else error code.
+ */
+nsuerror nsu_base64_encode(const uint8_t *input,
+                           size_t input_length,
+                           uint8_t *output,
+                           size_t *output_length);
+
+/**
+ * Base 64 encode data.
+ *
  * allocate a buffer and encode source data into it using the base64 URL safe
  *   encoding.
  *
@@ -52,6 +68,23 @@ nsuerror nsu_base64_encode_alloc_url(const uint8_t *input,
                                      uint8_t **output,
                                      size_t *output_length);
 
+
+/**
+ * Base 64 encode data.
+ *
+ * encode source data into buffer using the Base64 URL safe encoding.
+ *
+ * \param input The source data to encode.
+ * \param input_length The length of the source data.
+ * \param output The output buffer
+ * \param output_length The size of the \a output buffer on entry updated with length written on exit.
+ * \return NSUERROR_OK on success and \a output_length updated else error code.
+ */
+nsuerror nsu_base64_encode_url(const uint8_t *input,
+                           size_t input_length,
+                           uint8_t *output,
+                           size_t *output_length);
+
 /**
  * Base 64 decode data.
  *