68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
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/*-
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* Copyright (c) 2003, 2004 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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#include "asn_internal.h"
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#include <stdio.h>
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#include <errno.h>
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/*
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* The XER encoder of any type. May be invoked by the application.
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*/
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asn_enc_rval_t
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xer_encode(asn_TYPE_descriptor_t *td, void *sptr,
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enum xer_encoder_flags_e xer_flags,
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asn_app_consume_bytes_f *cb, void *app_key) {
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asn_enc_rval_t er, tmper;
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const char *mname;
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size_t mlen;
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int xcan = (xer_flags & XER_F_CANONICAL) ? 1 : 2;
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if(!td || !sptr) goto cb_failed;
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mname = td->xml_tag;
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mlen = strlen(mname);
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_ASN_CALLBACK3("<", 1, mname, mlen, ">", 1);
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tmper = td->xer_encoder(td, sptr, 1, xer_flags, cb, app_key);
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if(tmper.encoded == -1) return tmper;
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_ASN_CALLBACK3("</", 2, mname, mlen, ">\n", xcan);
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er.encoded = 4 + xcan + (2 * mlen) + tmper.encoded;
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_ASN_ENCODED_OK(er);
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cb_failed:
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_ASN_ENCODE_FAILED;
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}
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/*
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* This is a helper function for xer_fprint, which directs all incoming data
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* into the provided file descriptor.
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*/
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static int
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xer__print2fp(const void *buffer, size_t size, void *app_key) {
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FILE *stream = (FILE *)app_key;
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if(fwrite(buffer, 1, size, stream) != size)
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return -1;
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return 0;
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}
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int
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xer_fprint(FILE *stream, asn_TYPE_descriptor_t *td, void *sptr) {
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asn_enc_rval_t er;
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if(!stream) stream = stdout;
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if(!td || !sptr)
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return -1;
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er = xer_encode(td, sptr, XER_F_BASIC, xer__print2fp, stream);
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if(er.encoded == -1)
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return -1;
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return fflush(stream);
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}
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