From f5e5f70252f5161817499657beaf947066cfdb8d Mon Sep 17 00:00:00 2001
From: robertl <robertl@f51c46e8-681c-474f-0cfe-069cfd0219fb>
Date: Tue, 23 Jun 2009 03:02:21 +0000
Subject: [PATCH] Add 'erase_only' option to dg-100.

git-svn-id: http://gpsbabel.googlecode.com/svn/trunk@3667 f51c46e8-681c-474f-0cfe-069cfd0219fb
---
 gpsbabel/dg-100.c                  | 7 +++++++
 gpsbabel/xmldoc/formats/dg-100.xml | 4 ++++
 2 files changed, 11 insertions(+)

diff --git a/gpsbabel/dg-100.c b/gpsbabel/dg-100.c
index 78e50be58..5cc616ce1 100644
--- a/gpsbabel/dg-100.c
+++ b/gpsbabel/dg-100.c
@@ -619,11 +619,14 @@ dg100_erase()
 /* GPSBabel integration */
 
 static char *erase;
+static char *erase_only;
 
 static
 arglist_t dg100_args[] = {
 	{ "erase", &erase, "Erase device data after download", 
 		"0", ARGTYPE_BOOL, ARG_NOMINMAX }, 
+	{ "erase_only", &erase_only, "Only erase device data, do not download anything",
+		"0", ARGTYPE_BOOL, ARG_NOMINMAX }, 
 	ARG_TERMINATOR
 };
 
@@ -655,6 +658,10 @@ dg100_rd_deinit(void)
 static void
 dg100_read(void)
 {
+	if (*erase_only == '1') {
+		dg100_erase();
+		return;
+	}
 	dg100_getfiles();
 	if (*erase == '1') {
 		dg100_erase();
diff --git a/gpsbabel/xmldoc/formats/dg-100.xml b/gpsbabel/xmldoc/formats/dg-100.xml
index 35b95bb62..cc7b6fc7b 100644
--- a/gpsbabel/xmldoc/formats/dg-100.xml
+++ b/gpsbabel/xmldoc/formats/dg-100.xml
@@ -7,6 +7,10 @@
   <title>Command showing DG-100 download and erase on Linux</title>
   <para><userinput>gpsbabel -t -i dg-100,erase -o gpx /dev/ttyUSB0 outputfile.gpx</userinput></para>
 </example>
+<example id="dg-100-on-linux-erase_only">
+  <title>Command showing DG-100 erase_only option on Linux</title>
+  <para><userinput>gpsbabel -t -i dg-100,erase_only /dev/ttyUSB0</userinput></para>
+</example>
 
 <para>
 The DG-100 provides a physical USB interface to the host computer, but
-- 
2.30.2