Protocol Buffers - Google's data interchange format (grpc依赖) https://developers.google.com/protocol-buffers/
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#ifndef UPB_JSONENCODE_H_
#define UPB_JSONENCODE_H_
#include "upb/def.h"
#ifdef __cplusplus
extern "C" {
#endif
enum {
/* When set, emits 0/default values. TOOD(haberman): proto3 only? */
UPB_JSONENC_EMITDEFAULTS = 1,
/* When set, use normal (snake_caes) field names instead of JSON (camelCase)
names. */
UPB_JSONENC_PROTONAMES = 2
};
/* Encodes the given |msg| to JSON format. The message's reflection is given in
* |m|. The symtab in |symtab| is used to find extensions (if NULL, extensions
* will not be printed).
*
* Output is placed in the given buffer, and always NULL-terminated. The output
* size (excluding NULL) is returned. This means that a return value >= |size|
* implies that the output was truncated. (These are the same semantics as
* snprintf()). */
size_t upb_jsonencode(const upb_msg *msg, const upb_msgdef *m,
const upb_symtab *ext_pool, int options, char *buf,
size_t size, upb_status *status);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* UPB_JSONENCODE_H_ */