1 files changed, 83 insertions, 0 deletions
diff --git a/skeletons/UniversalString.c b/skeletons/UniversalString.c
new file mode 100644
index 00000000..7d75e079
--- /dev/null
+++ b/skeletons/UniversalString.c
@@ -0,0 +1,83 @@
+/*-
+ * 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 */
+};
+
+
+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 = sptr;
+	uint32_t *wchar;
+	uint32_t *wend;
+	char scratch[128];			/* Scratchpad buffer */
+	char *p;
+
+	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);
+}