gana

commit 7626b96d37ca125d8b9bf34db7b0305f11d02361
parent 1e1a13c64febaf890617e59cc0f41cb9c17a025b
Author: Christian Grothoff <christian@grothoff.org>
Date:   Sun, 13 Dec 2020 12:07:10 +0100

generate logic to lookup HTTP status code by ec

Diffstat:
M
gnu-taler-error-codes/c.footer
 | 
32
++++++++++++++++++++++++++------
M
gnu-taler-error-codes/c.header
 | 
9
+++++++++
M
gnu-taler-error-codes/c.template
 | 
3
++-
M
gnu-taler-error-codes/h.footer
 | 
10
++++++++++

4 files changed, 47 insertions(+), 7 deletions(-)
diff --git a/gnu-taler-error-codes/c.footer b/gnu-taler-error-codes/c.footer
@@ -1,12 +1,6 @@
 
 
 
-/**
- * Returns a hint for a given error code.
- *
- * @param ec the error code.
- * @return the hint if it could be found, otherwise "<no hint found>".
- */
 const char *
 TALER_ErrorCode_get_hint (enum TALER_ErrorCode ec)
 {
@@ -31,3 +25,29 @@ TALER_ErrorCode_get_hint (enum TALER_ErrorCode ec)
   }
   return "<no hint found>";
 }
+
+
+const unsigned int
+TALER_ErrorCode_get_http_status (enum TALER_ErrorCode ec)
+{
+  unsigned int lower = 0;
+  unsigned int upper = code_hint_pairs_length - 1;
+  unsigned int mid = upper / 2;
+  while (lower <= upper)
+  {
+    mid = (upper + lower) / 2;
+    if (code_hint_pairs[mid].ec < ec)
+    {
+      lower = mid + 1;
+    }
+    else if (code_hint_pairs[mid].ec > ec)
+    {
+      upper = mid - 1;
+    }
+    else
+    {
+      return code_hint_pairs[mid].http_status;
+    }
+  }
+  return UINT_MAX;
+}
diff --git a/gnu-taler-error-codes/c.header b/gnu-taler-error-codes/c.header
@@ -23,6 +23,10 @@
 #include "taler_error_codes.h"
 #include <stddef.h>
 
+/**
+ * MHD does not define our value for 0 (client-side generated code).
+ */
+#define MHD_HTTP_UNINITIALIZED 0
 
 /**
  * A pair containing an error code and its hint.
@@ -38,6 +42,11 @@ struct ErrorCodeAndHint
    * The hint.
    */
   const char *hint;
+
+  /**
+   * The HTTP status code.
+   */
+  unsigned int http_status;
 };
 
 
diff --git a/gnu-taler-error-codes/c.template b/gnu-taler-error-codes/c.template
@@ -1,5 +1,6 @@
 
   {
     .ec = TALER_EC_{{Name}},
-    .hint = "{{Description}}"
+    .hint = "{{Description}}",
+    .http_code = MHD_HTTP_{{HttpStatus_Identifier}}
   },
diff --git a/gnu-taler-error-codes/h.footer b/gnu-taler-error-codes/h.footer
@@ -13,6 +13,16 @@ const char *
 TALER_ErrorCode_get_hint (enum TALER_ErrorCode ec);
 
 
+/**
+ * Return HTTP status for a given error code.
+ *
+ * @param ec the error code.
+ * @return the HTTP status code for the given @a ec, UINT_MAX if not found
+ */
+const unsigned int
+TALER_ErrorCode_get_http_status (enum TALER_ErrorCode ec);
+
+
 #if 0 /* keep Emacsens' auto-indent happy */
 {
 #endif