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/*
* upb - a minimalist implementation of protocol buffers.
*
* Copyright (c) 2011-2012 Google Inc. See LICENSE for details.
* Author: Josh Haberman <jhaberman@gmail.com>
*
* upb's core components like upb_decoder and upb_msg are carefully designed to
* avoid depending on each other for maximum orthogonality. In other words,
* you can use a upb_decoder to decode into *any* kind of structure; upb_msg is
* just one such structure. A upb_msg can be serialized/deserialized into any
* format, protobuf binary format is just one such format.
*
* However, for convenience we provide functions here for doing common
* operations like deserializing protobuf binary format into a upb_msg. The
* compromise is that this file drags in almost all of upb as a dependency,
* which could be undesirable if you're trying to use a trimmed-down build of
* upb.
*
* While these routines are convenient, they do not reuse any encoding/decoding
* state. For example, if a decoder is JIT-based, it will be re-JITted every
* time these functions are called. For this reason, if you are parsing lots
* of data and efficiency is an issue, these may not be the best functions to
* use (though they are useful for prototyping, before optimizing).
*/
#ifndef UPB_GLUE_H
#define UPB_GLUE_H
#include <stdbool.h>
#include "upb/symtab.h"
#ifdef __cplusplus
extern "C" {
#endif
// Loads all defs from the given protobuf binary descriptor, setting default
// accessors and a default layout on all messages. The caller owns the
// returned array of defs, which will be of length *n. On error NULL is
// returned and status is set (if non-NULL).
upb_def **upb_load_defs_from_descriptor(const char *str, size_t len, int *n,
void *owner, upb_status *status);
// Like the previous but also adds the loaded defs to the given symtab.
bool upb_load_descriptor_into_symtab(upb_symtab *symtab, const char *str,
size_t len, upb_status *status);
// Like the previous but also reads the descriptor from the given filename.
bool upb_load_descriptor_file_into_symtab(upb_symtab *symtab, const char *fname,
upb_status *status);
// Reads the given filename into a character string, returning NULL if there
// was an error.
char *upb_readfile(const char *filename, size_t *len);
#ifdef __cplusplus
} /* extern "C" */
namespace upb {
// All routines that load descriptors expect the descriptor to be a
// FileDescriptorSet.
inline bool LoadDescriptorFileIntoSymtab(SymbolTable* s, const char *fname,
Status* status) {
return upb_load_descriptor_file_into_symtab(s, fname, status);
}
inline bool LoadDescriptorIntoSymtab(SymbolTable* s, const char* str,
size_t len, Status* status) {
return upb_load_descriptor_into_symtab(s, str, len, status);
}
// Templated so it can accept both string and std::string.
template <typename T>
bool LoadDescriptorIntoSymtab(SymbolTable* s, const T& desc, Status* status) {
return upb_load_descriptor_into_symtab(s, desc.c_str(), desc.size(), status);
}
} // namespace upb
#endif
#endif
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