85 lines
2.9 KiB
C
85 lines
2.9 KiB
C
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/*-
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* Copyright (c) 2004-2017 Lev Walkin <vlm@lionet.info>. All rights reserved.
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* Redistribution and modifications are permitted subject to BSD license.
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*/
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#ifndef _XER_ENCODER_H_
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#define _XER_ENCODER_H_
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#include <asn_application.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct asn_TYPE_descriptor_s; /* Forward declaration */
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/* Flags used by the xer_encode() and (*xer_type_encoder_f), defined below */
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enum xer_encoder_flags_e {
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/* Mode of encoding */
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XER_F_BASIC = 0x01, /* BASIC-XER (pretty-printing) */
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XER_F_CANONICAL = 0x02 /* Canonical XER (strict rules) */
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};
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/*
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* The XER encoder of any type. May be invoked by the application.
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* Produces CANONICAL-XER and BASIC-XER depending on the (xer_flags).
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*/
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asn_enc_rval_t xer_encode(const struct asn_TYPE_descriptor_s *type_descriptor,
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const void *struct_ptr, /* Structure to be encoded */
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enum xer_encoder_flags_e xer_flags,
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asn_app_consume_bytes_f *consume_bytes_cb,
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void *app_key /* Arbitrary callback argument */
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);
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/*
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* The variant of the above function which dumps the BASIC-XER (XER_F_BASIC)
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* output into the chosen file pointer.
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* RETURN VALUES:
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* 0: The structure is printed.
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* -1: Problem printing the structure.
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* WARNING: No sensible errno value is returned.
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*/
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int xer_fprint(FILE *stream, const struct asn_TYPE_descriptor_s *td,
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const void *struct_ptr);
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/*
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* A helper function that uses XER encoding/decoding to verify that:
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* - Both structures encode into the same BASIC XER.
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* - Both resulting XER byte streams can be decoded back.
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* - Both decoded structures encode into the same BASIC XER (round-trip).
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* All of this verifies equivalence between structures and a round-trip.
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* ARGUMENTS:
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* (opt_debug_stream) - If specified, prints ongoing details.
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*/
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enum xer_equivalence_e {
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XEQ_SUCCESS, /* The only completely positive return value */
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XEQ_FAILURE, /* General failure */
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XEQ_ENCODE1_FAILED, /* First sructure XER encoding failed */
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XEQ_ENCODE2_FAILED, /* Second structure XER encoding failed */
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XEQ_DIFFERENT, /* Structures encoded into different XER */
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XEQ_DECODE_FAILED, /* Decode of the XER data failed */
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XEQ_ROUND_TRIP_FAILED /* Bad round-trip */
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};
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enum xer_equivalence_e xer_equivalent(
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const struct asn_TYPE_descriptor_s *type_descriptor, const void *struct1,
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const void *struct2, FILE *opt_debug_stream);
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/*
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* Type of the generic XER encoder.
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*/
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typedef asn_enc_rval_t(xer_type_encoder_f)(
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const struct asn_TYPE_descriptor_s *type_descriptor,
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const void *struct_ptr, /* Structure to be encoded */
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int ilevel, /* Level of indentation */
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enum xer_encoder_flags_e xer_flags,
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asn_app_consume_bytes_f *consume_bytes_cb, /* Callback */
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void *app_key /* Arbitrary callback argument */
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);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _XER_ENCODER_H_ */
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