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qemu-option: opt_set(): split it up into more functions 

The new functions are opts_accepts_any() and find_desc_by_name(), which
are also going to be used by qemu_opts_validate() (see next commit).

This also makes opt_set() slightly more readable.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Dong Xu Wang <wdongxu@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Dong Xu Wang 2012-12-06 14:47:18 +08:00 committed by Kevin Wolf
parent fbcad04d6b
commit c474ced8fe
1 changed files with 24 additions and 16 deletions
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40
qemu-option.c
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@ -602,26 +602,36 @@ static void qemu_opt_del(QemuOpt *opt)
g_free(opt); g_free(opt);
} }
static void opt_set(QemuOpts *opts, const char *name, const char *value, static bool opts_accepts_any(const QemuOpts *opts)
bool prepend, Error **errp) {
return opts->list->desc[0].name == NULL;
}
static const QemuOptDesc *find_desc_by_name(const QemuOptDesc *desc,
const char *name)
{ {
QemuOpt *opt;
const QemuOptDesc *desc = opts->list->desc;
Error *local_err = NULL;
int i; int i;
for (i = 0; desc[i].name != NULL; i++) { for (i = 0; desc[i].name != NULL; i++) {
if (strcmp(desc[i].name, name) == 0) { if (strcmp(desc[i].name, name) == 0) {
break; return &desc[i];
} }
} }
if (desc[i].name == NULL) {
if (i == 0) { return NULL;
/* empty list -> allow any */; }
} else {
error_set(errp, QERR_INVALID_PARAMETER, name); static void opt_set(QemuOpts *opts, const char *name, const char *value,
return; bool prepend, Error **errp)
} {
QemuOpt *opt;
const QemuOptDesc *desc;
Error *local_err = NULL;
desc = find_desc_by_name(opts->list->desc, name);
if (!desc && !opts_accepts_any(opts)) {
error_set(errp, QERR_INVALID_PARAMETER, name);
return;
} }
opt = g_malloc0(sizeof(*opt)); opt = g_malloc0(sizeof(*opt));
@ -632,9 +642,7 @@ static void opt_set(QemuOpts *opts, const char *name, const char *value,
} else { } else {
QTAILQ_INSERT_TAIL(&opts->head, opt, next); QTAILQ_INSERT_TAIL(&opts->head, opt, next);
} }
if (desc[i].name != NULL) { opt->desc = desc;
opt->desc = desc+i;
}
if (value) { if (value) {
opt->str = g_strdup(value); opt->str = g_strdup(value);
} }