exchange

commit 477f8d08a4678c473fd055c1d9991733eff1e03a
parent 5efb46bd255dd71b30d55b460987620837af1218
Author: Christian Grothoff <christian@grothoff.org>
Date:   Mon, 16 Mar 2026 22:12:00 +0100

more APIs for #11253

Diffstat:
M
src/include/taler/taler_amount_lib.h
 | 
15
+++++++++++++++
M
src/util/amount.c
 | 
25
+++++++++++++++++++++++++

2 files changed, 40 insertions(+), 0 deletions(-)
diff --git a/src/include/taler/taler_amount_lib.h b/src/include/taler/taler_amount_lib.h
@@ -546,6 +546,21 @@ TALER_amount_set_test_above (const struct TALER_AmountSet *as,
                              const struct TALER_Amount *b);
 
 
+/**
+ * Find amount by @a currency in @a as. If @a as is not
+ * found, an amount of zero is returned in @a currency.
+ * This function is not reentrant, repeated calls may
+ * overwrite previously returned results.
+ *
+ * @param currency currency to search for
+ * @param as set to search
+ * @return NULL if @a currency is not a valid currency string
+ */
+const struct TALER_Amount *
+TALER_amount_set_find (const char *currency,
+                       const struct TALER_AmountSet *as);
+
+
 #if 0                           /* keep Emacsens' auto-indent happy */
 {
 #endif
diff --git a/src/util/amount.c b/src/util/amount.c
@@ -946,4 +946,29 @@ TALER_amount_set_test_above (const struct TALER_AmountSet *as,
 }
 
 
+const struct TALER_Amount *
+TALER_amount_set_find (const char *currency,
+                       const struct TALER_AmountSet *as)
+{
+  static struct TALER_Amount z;
+
+  for (unsigned int i = 0; i<as->taa_size; i++)
+  {
+    const struct TALER_Amount *asi = &as->taa[i];
+
+    if (0 == strcasecmp (currency,
+                         asi->currency))
+      return asi;
+  }
+  if (GNUNET_OK !=
+      TALER_amount_set_zero (currency,
+                             &z))
+  {
+    GNUNET_break (0);
+    return NULL;
+  }
+  return &z;
+}
+
+
 /* end of amount.c */