| /*- |
| * Copyright (c) 2003 Lev Walkin <vlm@lionet.info>. All rights reserved. |
| * Redistribution and modifications are permitted subject to BSD license. |
| */ |
| #include <UniversalString.h> |
| |
| /* |
| * UniversalString basic type description. |
| */ |
| static ber_tlv_tag_t asn1_DEF_UniversalString_tags[] = { |
| (ASN_TAG_CLASS_UNIVERSAL | (28 << 2)) |
| }; |
| asn1_TYPE_descriptor_t asn1_DEF_UniversalString = { |
| "UniversalString", |
| asn_generic_no_constraint, |
| OCTET_STRING_decode_ber, /* Implemented in terms of OCTET STRING */ |
| OCTET_STRING_encode_der, /* Implemented in terms of OCTET STRING */ |
| UniversalString_print, /* Convert into UTF8 and print */ |
| OCTET_STRING_free, |
| 0, /* Use generic outmost tag fetcher */ |
| asn1_DEF_UniversalString_tags, |
| sizeof(asn1_DEF_UniversalString_tags) |
| / sizeof(asn1_DEF_UniversalString_tags[0]), |
| 1, /* Single UNIVERSAL tag may be implicitly overriden */ |
| -1, /* Both ways are fine */ |
| 0 /* No specifics */ |
| }; |
| |
| |
| int |
| UniversalString_print(asn1_TYPE_descriptor_t *td, const void *sptr, int ilevel, |
| asn_app_consume_bytes_f *cb, void *app_key) { |
| const UniversalString_t *st = (const UniversalString_t *)sptr; |
| uint32_t *wchar; |
| uint32_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 = (uint32_t *)st->buf; |
| wend = (uint32_t *)(st->buf + st->size); |
| for(p = scratch; wchar < wend; wchar++) { |
| uint32_t wc = (((uint8_t *)wchar)[0] << 24) |
| | (((uint8_t *)wchar)[1] << 16) |
| | (((uint8_t *)wchar)[2] << 8) |
| | ((uint8_t *)wchar)[3]; /* 4 bytes */ |
| if(sizeof(scratch) - (p - scratch) < 6) { |
| 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 if(wc < 0x10000) { |
| *p++ = 0xe0 | ((wc >> 12)); |
| *p++ = 0x80 | ((wc >> 6) & 0x3f); |
| *p++ = 0x80 | ((wc & 0x3f)); |
| } else if(wc < 0x200000) { |
| *p++ = 0xf0 | ((wc >> 18)); |
| *p++ = 0x80 | ((wc >> 12) & 0x3f); |
| *p++ = 0x80 | ((wc >> 6) & 0x3f); |
| *p++ = 0x80 | ((wc & 0x3f)); |
| } else if(wc < 0x4000000) { |
| *p++ = 0xf8 | ((wc >> 24)); |
| *p++ = 0x80 | ((wc >> 18) & 0x3f); |
| *p++ = 0x80 | ((wc >> 12) & 0x3f); |
| *p++ = 0x80 | ((wc >> 6) & 0x3f); |
| *p++ = 0x80 | ((wc & 0x3f)); |
| } else { |
| *p++ = 0xfc | ((wc >> 30) & 0x1); |
| *p++ = 0x80 | ((wc >> 24) & 0x3f); |
| *p++ = 0x80 | ((wc >> 18) & 0x3f); |
| *p++ = 0x80 | ((wc >> 12) & 0x3f); |
| *p++ = 0x80 | ((wc >> 6) & 0x3f); |
| *p++ = 0x80 | ((wc & 0x3f)); |
| } |
| } |
| |
| return cb(scratch, p - scratch, app_key); |
| } |