mirror of https://gerrit.osmocom.org/asn1c
112 lines
2.8 KiB
C
112 lines
2.8 KiB
C
/*-
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* Copyright (c) 2003 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 <BMPString.h>
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/*
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* BMPString basic type description.
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*/
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static ber_tlv_tag_t asn1_DEF_BMPString_tags[] = {
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(ASN_TAG_CLASS_UNIVERSAL | (30 << 2)), /* [UNIVERSAL 30] IMPLICIT ...*/
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(ASN_TAG_CLASS_UNIVERSAL | (4 << 2)) /* ... OCTET STRING */
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};
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asn1_TYPE_descriptor_t asn1_DEF_BMPString = {
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"BMPString",
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OCTET_STRING_free, /* Implemented in terms of OCTET STRING */
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BMPString_print,
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asn_generic_no_constraint, /* No constraint by default */
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OCTET_STRING_decode_ber, /* Implemented in terms of OCTET STRING */
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OCTET_STRING_encode_der, /* Implemented in terms of OCTET STRING */
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0, /* Not implemented yet */
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BMPString_encode_xer, /* Conver to UTF8 */
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0, /* Use generic outmost tag fetcher */
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asn1_DEF_BMPString_tags,
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sizeof(asn1_DEF_BMPString_tags)
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/ sizeof(asn1_DEF_BMPString_tags[0]) - 1,
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asn1_DEF_BMPString_tags,
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sizeof(asn1_DEF_BMPString_tags)
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/ sizeof(asn1_DEF_BMPString_tags[0]),
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0, 0, /* No members */
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0 /* No specifics */
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};
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/*
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* BMPString specific contents printer.
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*/
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static ssize_t
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BMPString__dump(const BMPString_t *st,
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asn_app_consume_bytes_f *cb, void *app_key) {
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char scratch[128]; /* Scratchpad buffer */
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char *p = scratch;
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ssize_t wrote = 0;
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uint8_t *ch;
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uint8_t *end;
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ch = st->buf;
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end = (st->buf + st->size);
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for(end--; ch < end; ch += 2) {
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uint16_t wc = (ch[0] << 8) | ch[1]; /* 2 bytes */
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if(sizeof(scratch) - (p - scratch) < 3) {
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wrote += p - scratch;
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if(cb(scratch, p - scratch, app_key) < 0)
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return -1;
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p = scratch;
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}
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if(wc < 0x80) {
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*p++ = (char)wc;
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} else if(wc < 0x800) {
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*p++ = 0xc0 | ((wc >> 6));
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*p++ = 0x80 | ((wc & 0x3f));
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} else {
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*p++ = 0xe0 | ((wc >> 12));
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*p++ = 0x80 | ((wc >> 6) & 0x3f);
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*p++ = 0x80 | ((wc & 0x3f));
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}
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}
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wrote += p - scratch;
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if(cb(scratch, p - scratch, app_key) < 0)
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return -1;
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return wrote;
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}
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asn_enc_rval_t
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BMPString_encode_xer(asn1_TYPE_descriptor_t *td, void *sptr,
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int ilevel, enum xer_encoder_flags_e flags,
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asn_app_consume_bytes_f *cb, void *app_key) {
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const BMPString_t *st = (const BMPString_t *)sptr;
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asn_enc_rval_t er;
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(void)ilevel;
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(void)flags;
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if(!st || !st->buf)
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_ASN_ENCODE_FAILED;
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er.encoded = BMPString__dump(st, cb, app_key);
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if(er.encoded < 0) _ASN_ENCODE_FAILED;
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return er;
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}
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int
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BMPString_print(asn1_TYPE_descriptor_t *td, const void *sptr, int ilevel,
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asn_app_consume_bytes_f *cb, void *app_key) {
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const BMPString_t *st = (const BMPString_t *)sptr;
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(void)td; /* Unused argument */
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(void)ilevel; /* Unused argument */
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if(!st || !st->buf)
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return (cb("<absent>", 8, app_key) < 0) ? -1 : 0;
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if(BMPString__dump(st, cb, app_key) < 0)
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return -1;
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return 0;
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}
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