SPDX: license tags (mostly by guesswork)

[exim.git] / src / src / lookups / lf_quote.c

diff --git a/src/src/lookups/lf_quote.c b/src/src/lookups/lf_quote.c
index 86cdeef2857564e73db76a1bd92deea24c0e9212..816fe01e2d1083a819f93520fdc69a4b790ce331 100644 (file)
--- a/src/src/lookups/lf_quote.c
+++ b/src/src/lookups/lf_quote.c
@@ -2,8 +2,9 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2009 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
 /* See the file NOTICE for conditions of use and distribution. */
+/* SPDX-License-Identifier: GPL-2.0-only */
 
 
 #include "../exim.h"
@@ -22,42 +23,42 @@ Arguments:
   name           the field name
   value          the data value
   vlength        the data length
-  result         the result pointer
-  asize          points to the size variable
-  aoffset        points to the offset variable
+  result         the result expanding-string
 
 Returns:         the result pointer (possibly updated)
 */
 
-uschar *
-lf_quote(uschar *name, uschar *value, int vlength, uschar *result, int *asize,
-  int *aoffset)
+gstring *
+lf_quote(uschar *name, uschar *value, int vlength, gstring * result)
 {
-result = string_append(result, asize, aoffset, 2, name, US"=");
+result = string_append(result, 2, name, US"=");
 
 /* NULL is handled as an empty string */
 
-if (value == NULL) value = US"";
+if (!value)
+  {
+  value = US"";
+  vlength = 0;
+  }
 
 /* Quote the value if it is empty, contains white space, or starts with a quote
 character. */
 
 if (value[0] == 0 || Ustrpbrk(value, " \t\n\r") != NULL || value[0] == '\"')
   {
-  int j;
-  result = string_catn(result, asize, aoffset, US"\"", 1);
-  for (j = 0; j < vlength; j++)
+  result = string_catn(result, US"\"", 1);
+  for (int j = 0; j < vlength; j++)
     {
     if (value[j] == '\"' || value[j] == '\\')
-      result = string_catn(result, asize, aoffset, US"\\", 1);
-    result = string_catn(result, asize, aoffset, US value+j, 1);
+      result = string_catn(result, US"\\", 1);
+    result = string_catn(result, US value+j, 1);
     }
-  result = string_catn(result, asize, aoffset, US"\"", 1);
+  result = string_catn(result, US"\"", 1);
   }
 else
-  result = string_catn(result, asize, aoffset, US value, vlength);
+  result = string_catn(result, US value, vlength);
 
-return string_catn(result, asize, aoffset, US" ", 1);
+return string_catn(result, US" ", 1);
 }
 
 /* End of lf_quote.c */