gdbmtool: always provide stdin stream

* src/Makefile.am (libgdbmapp_a_SOURCES): Add input-std.c
* src/gdbmshell.c (input_history_begin): Improve diagnostic message.
* src/gdbmtool.c (instream_default_create): New define.
(gdbmtool_init): Use instream_default_create.
* src/gdbmtool.h [WITH_READLINE] (instream_readline_create_: New proto.
(input_stream_name): New proto.
* src/input-rl.c (instream_stdin_create): Rename to instream_readline_create.
Fall back to instream_stdin_create if stdin is not connected to a tty.
* src/lex.l (input_stream_name): New function.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/lex.l b/src/lex.l
index e2997e6..09f6ccd 100644
--- a/src/lex.l
+++ b/src/lex.l
@@ -85,6 +85,12 @@ input_history_get (int n)
   return context_tos ? instream_history_get (context_tos->input, n) : NULL;
 }
 
+const char *
+input_stream_name (void)
+{
+  return context_tos ? context_tos->input->in_name : "NULL";
+}
+ 
 static struct context *
 input_context_lookup (instream_t istr)
 {