[U-Boot] [RESEND PATCH 2/3] Add run_command_repeatable()

[Thomas Betker]

run_command() returns 0 on success and 1 on error. However, there are some
invocations which expect 0 or 1 for success (not repeatable or repeatable)
and -1 for error; add run_command_repeatable() for this purpose.

Signed-off-by: Thomas Betker <thomas.betker at rohde-schwarz.com>
---
 common/cli.c     | 24 ++++++++++++++++++++++++
 include/common.h |  1 +
 2 files changed, 25 insertions(+)

diff --git a/common/cli.c b/common/cli.c
index ea6bfb3..272b028 100644
--- a/common/cli.c
+++ b/common/cli.c
@@ -41,6 +41,30 @@ int run_command(const char *cmd, int flag)
 #endif
 }
 
+/*
+ * Run a command using the selected parser, and check if it is repeatable.
+ *
+ * @param cmd	Command to run
+ * @param flag	Execution flags (CMD_FLAG_...)
+ * @return 0 (not repeatable) or 1 (repeatable) on success, -1 on error.
+ */
+int run_command_repeatable(const char *cmd, int flag)
+{
+#ifndef CONFIG_SYS_HUSH_PARSER
+	return cli_simple_run_command(cmd, flag);
+#else
+	/*
+	 * parse_string_outer() returns 1 for failure, so clean up
+	 * its result.
+	 */
+	if (parse_string_outer(cmd,
+			       FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP))
+		return -1;
+
+	return 0;
+#endif
+}
+
 int run_command_list(const char *cmd, int len, int flag)
 {
 	int need_buff = 1;
diff --git a/include/common.h b/include/common.h
index 91dc0f3..cc74633 100644
--- a/include/common.h
+++ b/include/common.h
@@ -271,6 +271,7 @@ int print_buffer(ulong addr, const void *data, uint width, uint count,
 /* common/main.c */
 void	main_loop	(void);
 int run_command(const char *cmd, int flag);
+int run_command_repeatable(const char *cmd, int flag);
 
 /**
  * Run a list of commands separated by ; or even \0
-- 
1.9.3