[libmicrohttpd] 02/03: response: added MHD_get_response_element_n() function

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karlson2k pushed a commit to branch master
in repository libmicrohttpd.

commit 32a9f1dc4df378defaf1d5e7252b9241921f2191
Author: Evgeny Grin (Karlson2k) <k2k@narod.ru>
AuthorDate: Tue Jun 8 13:56:38 2021 +0300

    response: added MHD_get_response_element_n() function
---
 src/microhttpd/response.c | 36 ++++++++++++++++++++++++++++++++++++
 src/microhttpd/response.h | 19 +++++++++++++++++++
 2 files changed, 55 insertions(+)

diff --git a/src/microhttpd/response.c b/src/microhttpd/response.c
index 7e3deaf8..e1f2aebf 100644
--- a/src/microhttpd/response.c
+++ b/src/microhttpd/response.c
@@ -399,6 +399,42 @@ MHD_get_response_header (struct MHD_Response *response,
 }
 
 
+/**
+ * Get a particular header (or footer) element from the response.
+ *
+ * Function returns the first found element.
+ * @param response response to query
+ * @param kind the kind of element: header or footer
+ * @param key the key which header to get
+ * @param key_len the length of the @a key
+ * @return NULL if header elemnt does not exist
+ * @ingroup response
+ */
+struct MHD_HTTP_Header *
+MHD_get_response_element_n_ (struct MHD_Response *response,
+                             enum MHD_ValueKind kind,
+                             const char *key,
+                             size_t key_len)
+{
+  struct MHD_HTTP_Header *pos;
+
+  mhd_assert (NULL != key);
+  mhd_assert (0 != key[0]);
+  mhd_assert (0 != key_len);
+
+  for (pos = response->first_header;
+       NULL != pos;
+       pos = pos->next)
+  {
+    if ((pos->header_size == key_len) &&
+        (kind == pos->kind) &&
+        (MHD_str_equal_caseless_bin_n_ (pos->header, key, pos->header_size)))
+      return pos;
+  }
+  return NULL;
+}
+
+
 /**
  * Check whether response header contains particular token.
  *
diff --git a/src/microhttpd/response.h b/src/microhttpd/response.h
index 03448e56..52dece93 100644
--- a/src/microhttpd/response.h
+++ b/src/microhttpd/response.h
@@ -1,6 +1,7 @@
 /*
      This file is part of libmicrohttpd
      Copyright (C) 2007 Daniel Pittman and Christian Grothoff
+     Copyright (C) 2015-2021 Karlson2k (Evgeny Grin)
 
      This library is free software; you can redistribute it and/or
      modify it under the terms of the GNU Lesser General Public
@@ -22,6 +23,7 @@
  * @brief  Methods for managing response objects
  * @author Daniel Pittman
  * @author Christian Grothoff
+ * @author Karlson2k (Evgeny Grin)
  */
 
 #ifndef RESPONSE_H
@@ -54,4 +56,21 @@ MHD_response_execute_upgrade_ (struct MHD_Response *response,
                                struct MHD_Connection *connection);
 
 
+/**
+ * Get a particular header (or footer) element from the response.
+ *
+ * Function returns the first found element.
+ * @param response response to query
+ * @param kind the kind of element: header or footer
+ * @param key the key which header to get
+ * @param key_len the length of the @a key
+ * @return NULL if header elemnt does not exist
+ * @ingroup response
+ */
+struct MHD_HTTP_Header *
+MHD_get_response_element_n_ (struct MHD_Response *response,
+                             enum MHD_ValueKind kind,
+                             const char *key,
+                             size_t key_len);
+
 #endif

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