From 8fe2a9c3c458ef7205254f25e06ca5aa28bcb0f2 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue, 4 Nov 2008 09:14:58 +0000
Subject: Tunnel  stderr.

---
 src/main.c   | 55 ++++++++++++++++++++++++++++++++++++++++++++++++-------
 src/sphinx.h |  1 +
 2 files changed, 49 insertions(+), 7 deletions(-)

diff --git a/src/main.c b/src/main.c
index 124aa26..000b1b9 100644
--- a/src/main.c
+++ b/src/main.c
@@ -411,6 +411,8 @@ execute_command_dlg (GtkAction *action, sphinx_t *sphinx)
     gtk_widget_show (w);
 
     w = gtk_entry_new ();
+    if (sphinx->last_command)
+	gtk_entry_set_text (GTK_ENTRY (w), sphinx->last_command);
     gtk_entry_set_activates_default (GTK_ENTRY (w), TRUE);
     gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog)->vbox), w,
 			FALSE, FALSE, 0);
@@ -961,14 +963,43 @@ done:
     return ret;
 }
 
+static gboolean
+stderr_read (GIOChannel *io, GIOCondition cond)
+{
+    int fd;
+
+    fd = g_io_channel_unix_get_fd (io);
+    do {
+	char buf[4096];
+	int len;
+
+	len = read (fd, buf, sizeof (buf));
+	if (len <= 0) {
+	    int err = len ? errno : 0;
+	    switch (err) {
+	    case EAGAIN:
+	    case EINTR:
+		return TRUE;
+	    default:
+		g_io_channel_unref (io);
+		return FALSE;
+	    }
+	}
+
+	buf[len] = '\0';
+	g_printerr ("%s", buf);
+    } while (TRUE);
+}
+
 static gboolean
 sphinx_trace_command (sphinx_t *sphinx, const char *command, GError **error)
 {
-    gint output;
+    gint stdout_fd, stderr_fd;
     GtkTextIter start, stop;
     long flags;
     char **argv, **argv0;
     int argc;
+    GIOChannel *io;
     gchar *str;
 
     if (! g_shell_parse_argv (command, &argc, &argv, error))
@@ -981,10 +1012,9 @@ sphinx_trace_command (sphinx_t *sphinx, const char *command, GError **error)
     g_free (argv);
 
     if (! g_spawn_async_with_pipes (NULL, argv0, NULL,
-				    G_SPAWN_SEARCH_PATH |
-				    G_SPAWN_STDERR_TO_DEV_NULL,
+				    G_SPAWN_SEARCH_PATH,
 				    NULL, NULL, NULL,
-				    NULL, &output, NULL,
+				    NULL, &stdout_fd, &stderr_fd,
 				    error))
     {
 	g_strfreev (argv0);
@@ -1002,6 +1032,9 @@ sphinx_trace_command (sphinx_t *sphinx, const char *command, GError **error)
 			  str);
     g_free (str);
 
+    g_free (sphinx->last_command);
+    sphinx->last_command = g_strdup (command);
+
     g_free (sphinx->trace_name);
     sphinx->trace_name = g_strdup (command);
 
@@ -1009,13 +1042,21 @@ sphinx_trace_command (sphinx_t *sphinx, const char *command, GError **error)
     gtk_text_buffer_delete (GTK_TEXT_BUFFER (sphinx->buffer), &start, &stop);
     gtk_source_buffer_remove_source_marks (sphinx->buffer, &start, &stop, NULL);
 
-    flags = fcntl (output, F_GETFL);
+    flags = fcntl (stdout_fd, F_GETFL);
     if ((flags & O_NONBLOCK) == 0)
-	fcntl (output, F_SETFL, flags | O_NONBLOCK);
+	fcntl (stdout_fd, F_SETFL, flags | O_NONBLOCK);
 
-    sphinx->trace_io = g_io_channel_unix_new (output);
+    sphinx->trace_io = g_io_channel_unix_new (stdout_fd);
     g_io_add_watch (sphinx->trace_io,
 		    G_IO_IN | G_IO_HUP, (GIOFunc) trace_read, sphinx);
+
+    flags = fcntl (stderr_fd, F_GETFL);
+    if ((flags & O_NONBLOCK) == 0)
+	fcntl (stderr_fd, F_SETFL, flags | O_NONBLOCK);
+
+    io = g_io_channel_unix_new (stderr_fd);
+    g_io_add_watch (io, G_IO_IN | G_IO_HUP, (GIOFunc) stderr_read, NULL);
+
     return TRUE;
 }
 
diff --git a/src/sphinx.h b/src/sphinx.h
index 23c70b3..e6fa306 100644
--- a/src/sphinx.h
+++ b/src/sphinx.h
@@ -35,6 +35,7 @@ typedef struct _sphinx {
     cairo_script_interpreter_t *csi;
 
     gchar *trace_name;
+    gchar *last_command;
 
     GtkWidget *tv;
     GtkSourceBuffer *buffer;
-- 
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