70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/*
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* Copyright (c) 2017 Lev Walkin <vlm@lionet.info>.
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* 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 <BIT_STRING.h>
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/*
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* BIT STRING specific contents printer.
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*/
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int
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BIT_STRING_print(const asn_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 char * const h2c = "0123456789ABCDEF";
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char scratch[64];
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const BIT_STRING_t *st = (const BIT_STRING_t *)sptr;
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uint8_t *buf;
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uint8_t *end;
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char *p = scratch;
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(void)td; /* 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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ilevel++;
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buf = st->buf;
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end = buf + st->size;
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/*
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* Hexadecimal dump.
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*/
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for(; buf < end; buf++) {
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if((buf - st->buf) % 16 == 0 && (st->size > 16)
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&& buf != st->buf) {
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_i_INDENT(1);
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/* Dump the string */
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if(cb(scratch, p - scratch, app_key) < 0) return -1;
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p = scratch;
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}
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*p++ = h2c[*buf >> 4];
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*p++ = h2c[*buf & 0x0F];
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*p++ = 0x20;
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}
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if(p > scratch) {
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p--; /* Eat the tailing space */
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if((st->size > 16)) {
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_i_INDENT(1);
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}
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/* Dump the incomplete 16-bytes row */
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if(cb(scratch, p - scratch, app_key) < 0)
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return -1;
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}
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if(st->bits_unused) {
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int ret = snprintf(scratch, sizeof(scratch), " (%d bit%s unused)",
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st->bits_unused, st->bits_unused == 1 ? "" : "s");
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assert(ret > 0 && ret < (ssize_t)sizeof(scratch));
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if(ret > 0 && ret < (ssize_t)sizeof(scratch)
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&& cb(scratch, ret, app_key) < 0)
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return -1;
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}
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return 0;
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}
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