[RFC,v3,07/12] argparse: provide parsing known type API
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Commit Message
Provide API which could parsing the value from the input string based
on the value type. This API could used in user callback when parsing
string by argparse or kvargs library.
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
---
lib/argparse/rte_argparse.c | 19 +++++++++++++++++++
lib/argparse/rte_argparse.h | 19 +++++++++++++++++++
lib/argparse/version.map | 1 +
3 files changed, 39 insertions(+)
@@ -600,3 +600,22 @@ rte_argparse_parse(struct rte_argparse *obj, int argc, char **argv)
exit(ret);
return ret;
}
+
+int
+rte_argparse_parse_type(const char *str, uint64_t val_type, void *val)
+{
+ uint32_t cmp_max = RTE_FIELD_GET64(ARG_ATTR_VAL_TYPE_MASK, RTE_ARGPARSE_ARG_VALUE_MAX);
+ struct rte_argparse_arg arg = {
+ .name_long = str,
+ .name_short = NULL,
+ .val_saver = val,
+ .val_set = NULL,
+ .flags = val_type,
+ };
+ uint32_t value_type = arg_attr_val_type(&arg);
+
+ if (value_type == 0 || value_type >= cmp_max)
+ return -EINVAL;
+
+ return parse_arg_autosave(&arg, str);
+}
@@ -184,6 +184,25 @@ struct rte_argparse {
__rte_experimental
int rte_argparse_parse(struct rte_argparse *obj, int argc, char **argv);
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice.
+ *
+ * Parse the value from the input string based on the value type.
+ *
+ * @param str
+ * Input string.
+ * @param val_type
+ * The value type, @see RTE_ARGPARSE_ARG_VALUE_INT or other type.
+ * @param val
+ * Saver for the value.
+ *
+ * @return
+ * 0 on success. Otherwise negative value is returned.
+ */
+__rte_experimental
+int rte_argparse_parse_type(const char *str, uint64_t val_type, void *val);
+
#ifdef __cplusplus
}
#endif
@@ -2,6 +2,7 @@ EXPERIMENTAL {
global:
rte_argparse_parse;
+ rte_argparse_parse_type;
local: *;
};