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/*-
* Copyright (c) 2003 Lev Walkin <vlm@lionet.info>. All rights reserved.
* Redistribution and modifications are permitted subject to BSD license.
*/
#include <BMPString.h>
/*
* BMPString basic type description.
*/
static ber_tlv_tag_t asn1_DEF_BMPString_tags[] = {
(ASN_TAG_CLASS_UNIVERSAL | (30 << 2)), /* [UNIVERSAL 30] IMPLICIT ...*/
(ASN_TAG_CLASS_UNIVERSAL | (4 << 2)) /* ... OCTET STRING */
};
asn1_TYPE_descriptor_t asn1_DEF_BMPString = {
"BMPString",
asn_generic_no_constraint, /* No constraint by default */
OCTET_STRING_decode_ber, /* Implemented in terms of OCTET STRING */
OCTET_STRING_encode_der, /* Implemented in terms of OCTET STRING */
BMPString_print,
OCTET_STRING_free, /* -//- */
0, /* Use generic outmost tag fetcher */
asn1_DEF_BMPString_tags,
sizeof(asn1_DEF_BMPString_tags)
/ sizeof(asn1_DEF_BMPString_tags[0]) - 1,
asn1_DEF_BMPString_tags,
sizeof(asn1_DEF_BMPString_tags)
/ sizeof(asn1_DEF_BMPString_tags[0]),
-1, /* Both ways are fine */
0, 0, /* No members */
0 /* No specifics */
};
/*
* BMPString specific contents printer.
*/
int
BMPString_print(asn1_TYPE_descriptor_t *td, const void *sptr, int ilevel,
asn_app_consume_bytes_f *cb, void *app_key) {
const BMPString_t *st = (const BMPString_t *)sptr;
uint16_t *wchar;
uint16_t *wend;
char scratch[128]; /* Scratchpad buffer */
char *p;
(void)td; /* Unused argument */
(void)ilevel; /* Unused argument */
if(!st || !st->buf) return cb("<absent>", 8, app_key);
wchar = (uint16_t *)st->buf;
wend = (uint16_t *)(st->buf + st->size);
for(p = scratch; wchar < wend; wchar++) {
uint16_t wc = (((uint8_t *)wchar)[0] << 8)
| ((uint8_t *)wchar)[1]; /* 2 bytes */
if(sizeof(scratch) - (p - scratch) < 3) {
if(cb(scratch, p - scratch, app_key))
return -1;
p = scratch;
}
if(wc < 0x80) {
*p++ = (char)wc;
} else if(wc < 0x800) {
*p++ = 0xc0 | ((wc >> 6));
*p++ = 0x80 | ((wc & 0x3f));
} else {
*p++ = 0xe0 | ((wc >> 12));
*p++ = 0x80 | ((wc >> 6) & 0x3f);
*p++ = 0x80 | ((wc & 0x3f));
}
}
return cb(scratch, p - scratch, app_key);
}
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