[libvirt] [PATCH 02/13] improve the iteration of VSH_OT_ARGV options
Signed-off-by: Lai Jiangshan <laijs(a)fujitsu.com>
---
tools/virsh.c | 47 ++++++++++++++++++++++++-----------------------
1 files changed, 24 insertions(+), 23 deletions(-)
diff --git a/tools/virsh.c b/tools/virsh.c
index c358580..2e27535 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -277,7 +277,27 @@ static int vshCommandOptULongLong(const vshCmd *cmd, const char
*name,
unsigned long long *value)
ATTRIBUTE_NONNULL(3) ATTRIBUTE_RETURN_CHECK;
static bool vshCommandOptBool(const vshCmd *cmd, const char *name);
-static char *vshCommandOptArgv(const vshCmd *cmd, int count);
+
+/*
+ * Iterate all the argv arguments.
+ *
+ * Requires that a VSH_OT_ARGV option be last in the
+ * list of supported options in CMD->def->opts.
+ */
+static inline const vshCmdOpt *__variable_arg(const vshCmdOpt *opt)
+{
+ while (opt) {
+ if (opt->def && opt->def->type == VSH_OT_ARGV)
+ break;
+ opt = opt->next;
+ }
+
+ return opt;
+}
+
+#define for_each_variable_arg(cmd, opt) \
+ for (opt = __variable_arg(cmd->opts); opt; opt = __variable_arg(opt->next))
+
#define VSH_BYID (1 << 1)
#define VSH_BYUUID (1 << 2)
@@ -10059,6 +10079,7 @@ cmdEcho (vshControl *ctl ATTRIBUTE_UNUSED, const vshCmd *cmd)
bool shell = false;
bool xml = false;
int count = 0;
+ const vshCmdOpt *opt;
char *arg;
virBuffer buf = VIR_BUFFER_INITIALIZER;
@@ -10067,10 +10088,11 @@ cmdEcho (vshControl *ctl ATTRIBUTE_UNUSED, const vshCmd *cmd)
if (vshCommandOptBool(cmd, "xml"))
xml = true;
- while ((arg = vshCommandOptArgv(cmd, count)) != NULL) {
+ for_each_variable_arg(cmd, opt) {
bool close_quote = false;
char *q;
+ arg = opt->data;
if (count)
virBufferAddChar(&buf, ' ');
/* Add outer '' only if arg included shell metacharacters. */
@@ -11484,27 +11506,6 @@ vshCommandOptBool(const vshCmd *cmd, const char *name)
return vshCommandOpt(cmd, name) != NULL;
}
-/*
- * Returns the COUNT argv argument, or NULL after last argument.
- *
- * Requires that a VSH_OT_ARGV option with the name "" be last in the
- * list of supported options in CMD->def->opts.
- */
-static char *
-vshCommandOptArgv(const vshCmd *cmd, int count)
-{
- vshCmdOpt *opt = cmd->opts;
-
- while (opt) {
- if (opt->def && opt->def->type == VSH_OT_ARGV) {
- if (count-- == 0)
- return opt->data;
- }
- opt = opt->next;
- }
- return NULL;
-}
-
/* Determine whether CMD->opts includes an option with name OPTNAME.
If not, give a diagnostic and return false.
If so, return true. */
--
1.7.4.4