2 * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
3 * Redistribution and modifications are permitted subject to BSD license.
5 #include <asn_internal.h>
10 * The XER encoder of any type. May be invoked by the application.
13 xer_encode(const asn_TYPE_descriptor_t *td, const void *sptr,
14 enum xer_encoder_flags_e xer_flags, asn_app_consume_bytes_f *cb,
16 asn_enc_rval_t er = {0, 0, 0};
20 int xcan = (xer_flags & XER_F_CANONICAL) ? 1 : 2;
22 if(!td || !sptr) goto cb_failed;
27 ASN__CALLBACK3("<", 1, mname, mlen, ">", 1);
29 tmper = td->op->xer_encoder(td, sptr, 1, xer_flags, cb, app_key);
30 if(tmper.encoded == -1) return tmper;
31 er.encoded += tmper.encoded;
33 ASN__CALLBACK3("</", 2, mname, mlen, ">\n", xcan);
41 * This is a helper function for xer_fprint, which directs all incoming data
42 * into the provided file descriptor.
45 xer__print2fp(const void *buffer, size_t size, void *app_key) {
46 FILE *stream = (FILE *)app_key;
48 if(fwrite(buffer, 1, size, stream) != size)
55 xer_fprint(FILE *stream, const asn_TYPE_descriptor_t *td, const void *sptr) {
56 asn_enc_rval_t er = {0,0,0};
58 #ifndef DEBUG_ASN_PRINT
62 if(!stream) stream = stdout;
66 er = xer_encode(td, sptr, XER_F_BASIC, xer__print2fp, stream);
70 return fflush(stream);
76 size_t allocated_size;
80 xer__buffer_append(const void *buffer, size_t size, void *app_key) {
81 struct xer_buffer *xb = app_key;
83 while(xb->buffer_size + size + 1 > xb->allocated_size) {
84 size_t new_size = 2 * (xb->allocated_size ? xb->allocated_size : 64);
85 char *new_buf = MALLOC(new_size);
86 if(!new_buf) return -1;
88 memcpy(new_buf, xb->buffer, xb->buffer_size);
92 xb->allocated_size = new_size;
95 memcpy(xb->buffer + xb->buffer_size, buffer, size);
96 xb->buffer_size += size;
97 xb->buffer[xb->buffer_size] = '\0';
101 enum xer_equivalence_e
102 xer_equivalent(const struct asn_TYPE_descriptor_s *td, const void *struct1,
103 const void *struct2, FILE *opt_debug_stream) {
104 struct xer_buffer xb1 = {0, 0, 0};
105 struct xer_buffer xb2 = {0, 0, 0};
106 asn_enc_rval_t e1, e2;
110 if(!td || !struct1 || !struct2) {
111 if(opt_debug_stream) {
112 if(!td) fprintf(opt_debug_stream, "Type descriptor missing\n");
113 if(!struct1) fprintf(opt_debug_stream, "Structure 1 missing\n");
114 if(!struct2) fprintf(opt_debug_stream, "Structure 2 missing\n");
119 e1 = xer_encode(td, struct1, XER_F_BASIC, xer__buffer_append, &xb1);
120 if(e1.encoded == -1) {
121 if(opt_debug_stream) {
122 fprintf(stderr, "XER Encoding of %s failed\n", td->name);
125 return XEQ_ENCODE1_FAILED;
128 e2 = xer_encode(td, struct2, XER_F_BASIC, xer__buffer_append, &xb2);
129 if(e2.encoded == -1) {
130 if(opt_debug_stream) {
131 fprintf(stderr, "XER Encoding of %s failed\n", td->name);
135 return XEQ_ENCODE1_FAILED;
138 if(xb1.buffer_size != xb2.buffer_size
139 || memcmp(xb1.buffer, xb2.buffer, xb1.buffer_size) != 0) {
140 if(opt_debug_stream) {
141 fprintf(opt_debug_stream,
142 "Structures XER-encoded into different byte streams:\n=== "
143 "Structure 1 ===\n%s\n=== Structure 2 ===\n%s\n",
144 xb1.buffer, xb2.buffer);
148 return XEQ_DIFFERENT;
150 if(opt_debug_stream) {
151 fprintf(opt_debug_stream,
152 "Both structures encoded into the same XER byte stream "
153 "of size %" ASN_PRI_SIZE ":\n%s",
154 xb1.buffer_size, xb1.buffer);
158 rval = xer_decode(NULL, td, (void **)&sptr, xb1.buffer,
164 if(opt_debug_stream) {
165 fprintf(opt_debug_stream,
166 "Structure %s XER decode unexpectedly requires "
168 td->name, xb1.buffer);
173 if(opt_debug_stream) {
174 fprintf(opt_debug_stream,
175 "Structure %s XER decoding resulted in failure.\n",
178 ASN_STRUCT_FREE(*td, sptr);
181 return XEQ_DECODE_FAILED;
184 if(rval.consumed != xb1.buffer_size
185 && ((rval.consumed > xb1.buffer_size)
186 || xer_whitespace_span(xb1.buffer + rval.consumed,
187 xb1.buffer_size - rval.consumed)
188 != (xb1.buffer_size - rval.consumed))) {
189 if(opt_debug_stream) {
190 fprintf(opt_debug_stream,
191 "Round-trip decode of %s required less bytes (%" ASN_PRI_SIZE ") than "
192 "encoded (%" ASN_PRI_SIZE ")\n",
193 td->name, rval.consumed, xb1.buffer_size);
195 ASN_STRUCT_FREE(*td, sptr);
198 return XEQ_ROUND_TRIP_FAILED;
202 * Reuse xb2 to encode newly decoded structure.
205 memset(&xb2, 0, sizeof(xb2));
207 e2 = xer_encode(td, sptr, XER_F_BASIC, xer__buffer_append, &xb2);
208 if(e2.encoded == -1) {
209 if(opt_debug_stream) {
210 fprintf(stderr, "XER Encoding of round-trip decode of %s failed\n",
213 ASN_STRUCT_FREE(*td, sptr);
216 return XEQ_ROUND_TRIP_FAILED;
219 ASN_STRUCT_FREE(*td, sptr);
222 if(xb1.buffer_size != xb2.buffer_size
223 || memcmp(xb1.buffer, xb2.buffer, xb1.buffer_size) != 0) {
224 if(opt_debug_stream) {
225 fprintf(opt_debug_stream,
226 "XER Encoding of round-trip decode of %s resulted in "
227 "different byte stream:\n"
228 "=== Original ===\n%s\n"
229 "=== Round-tripped ===\n%s\n",
230 xb1.buffer, xb2.buffer, td->name);
234 return XEQ_ROUND_TRIP_FAILED;