Various stream-related with- macros introduced.

* lisplib.c (with_stream_set_entries,
with_stream_instantiate): New static functions.
(lisplib_init): Register new functions in dl_table.

* share/txr/stdlib/with-stream.tl: New file.

* txr.1: Documented new macros.

1 files changed, 22 insertions, 0 deletions

diff --git a/lisplib.c b/lisplib.c
index dc90a377..122256f3 100644
--- a/lisplib.c
+++ b/lisplib.c
@@ -189,6 +189,27 @@ static val struct_instantiate(val set_fun)
   return nil;
 }
 
+static val with_stream_set_entries(val dlt, val fun)
+{
+  val name[] = {
+    lit("with-out-string-stream"),
+    lit("with-out-strlist-stream"),
+    lit("with-in-string-stream"),
+    lit("with-in-string-byte-stream"),
+    lit("with-stream"),
+    nil
+  };
+  set_dlt_entries(dlt, name, fun);
+  return nil;
+}
+
+static val with_stream_instantiate(val set_fun)
+{
+  funcall1(set_fun, nil);
+  load(format(nil, lit("~a/with-stream.tl"), stdlib_path, nao));
+  return nil;
+}
+
 val dlt_register(val dlt,
                  val (*instantiate)(val),
                  val (*set_entries)(val, val))
@@ -207,6 +228,7 @@ void lisplib_init(void)
   dlt_register(dl_table, with_resources_instantiate, with_resources_set_entries);
   dlt_register(dl_table, path_test_instantiate, path_test_set_entries);
   dlt_register(dl_table, struct_instantiate, struct_set_entries);
+  dlt_register(dl_table, with_stream_instantiate, with_stream_set_entries);
 }
 
 val lisplib_try_load(val sym)