estream: Support the %b conversion specifier from C23HEADmaster

* src/estream-printf.c (CONSSPEC_BIN): New.
(compute_type): Handle it.
(parse_format): Support 'b'.
(do_format): Divert 'b' to pr_integer.
(pr_integer): Print binary format.

* tests/t-printf.c (check_fprintf_sf): Add two simple testcases.
--

Might be handy in some cases and is easy to implement.  Minor drawback
is that this increases a stack based buffer from 100 to 150 bytes.

1 files changed, 26 insertions, 0 deletions

diff --git a/tests/t-printf.c b/tests/t-printf.c
index 87c201d..eb54750 100644
--- a/tests/t-printf.c
+++ b/tests/t-printf.c
@@ -486,6 +486,32 @@ check_fprintf_sf (void)
     }
   free (result);
 
+  gpgrt_fprintf_sf (stream, string_filter, &sfstate,
+                    "a=%x b=%b c=%X",
+                    19410909u, 19410909u, 19410909u);
+  expect = "a=1282fdd b=1001010000010111111011101 c=1282FDD";
+  result = stream_to_string (stream);
+  if (strcmp (result, expect))
+    {
+      show ("expect: '%s'\n", expect);
+      show ("result: '%s'\n", result);
+      fail ("fprintf_sf failed at %d\n", __LINE__);
+    }
+  free (result);
+
+  gpgrt_fprintf_sf (stream, string_filter, &sfstate,
+                    "a=%#x b=%#b c=%#X",
+                    19420130u, 19420130u, 19420130u);
+  expect = "a=0x12853e2 b=0b1001010000101001111100010 c=0X12853E2";
+  result = stream_to_string (stream);
+  if (strcmp (result, expect))
+    {
+      show ("expect: '%s'\n", expect);
+      show ("result: '%s'\n", result);
+      fail ("fprintf_sf failed at %d\n", __LINE__);
+    }
+  free (result);
+
   gpgrt_fclose (stream);
 }