Harald Welte | 43ab79f | 2018-10-03 23:34:21 +0200 | [diff] [blame] | 1 | /*- |
| 2 | * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved. |
| 3 | * Redistribution and modifications are permitted subject to BSD license. |
| 4 | */ |
| 5 | #include <asn_internal.h> |
| 6 | #include <stdio.h> |
| 7 | #include <errno.h> |
| 8 | |
| 9 | /* |
| 10 | * The XER encoder of any type. May be invoked by the application. |
| 11 | */ |
| 12 | asn_enc_rval_t |
| 13 | xer_encode(asn_TYPE_descriptor_t *td, void *sptr, |
| 14 | enum xer_encoder_flags_e xer_flags, |
| 15 | asn_app_consume_bytes_f *cb, void *app_key) { |
| 16 | asn_enc_rval_t er, tmper; |
| 17 | const char *mname; |
| 18 | size_t mlen; |
| 19 | int xcan = (xer_flags & XER_F_CANONICAL) ? 1 : 2; |
| 20 | |
| 21 | if(!td || !sptr) goto cb_failed; |
| 22 | |
| 23 | mname = td->xml_tag; |
| 24 | mlen = strlen(mname); |
| 25 | |
| 26 | _ASN_CALLBACK3("<", 1, mname, mlen, ">", 1); |
| 27 | |
| 28 | tmper = td->xer_encoder(td, sptr, 1, xer_flags, cb, app_key); |
| 29 | if(tmper.encoded == -1) return tmper; |
| 30 | |
| 31 | _ASN_CALLBACK3("</", 2, mname, mlen, ">\n", xcan); |
| 32 | |
| 33 | er.encoded = 4 + xcan + (2 * mlen) + tmper.encoded; |
| 34 | |
| 35 | _ASN_ENCODED_OK(er); |
| 36 | cb_failed: |
| 37 | _ASN_ENCODE_FAILED; |
| 38 | } |
| 39 | |
| 40 | /* |
| 41 | * This is a helper function for xer_fprint, which directs all incoming data |
| 42 | * into the provided file descriptor. |
| 43 | */ |
| 44 | static int |
| 45 | xer__print2fp(const void *buffer, size_t size, void *app_key) { |
| 46 | FILE *stream = (FILE *)app_key; |
| 47 | |
| 48 | if(fwrite(buffer, 1, size, stream) != size) |
| 49 | return -1; |
| 50 | |
| 51 | return 0; |
| 52 | } |
| 53 | |
| 54 | int |
| 55 | xer_fprint(FILE *stream, asn_TYPE_descriptor_t *td, void *sptr) { |
| 56 | asn_enc_rval_t er; |
| 57 | |
| 58 | if(!stream) stream = stdout; |
| 59 | if(!td || !sptr) |
| 60 | return -1; |
| 61 | |
| 62 | er = xer_encode(td, sptr, XER_F_BASIC, xer__print2fp, stream); |
| 63 | if(er.encoded == -1) |
| 64 | return -1; |
| 65 | |
| 66 | return fflush(stream); |
| 67 | } |