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
61 if(!stream) stream = stdout;
65 er = xer_encode(td, sptr, XER_F_BASIC, xer__print2fp, stream);
69 return fflush(stream);
75 size_t allocated_size;
79 xer__buffer_append(const void *buffer, size_t size, void *app_key) {
80 struct xer_buffer *xb = app_key;
82 while(xb->buffer_size + size + 1 > xb->allocated_size) {
83 size_t new_size = 2 * (xb->allocated_size ? xb->allocated_size : 64);
84 char *new_buf = MALLOC(new_size);
85 if(!new_buf) return -1;
87 memcpy(new_buf, xb->buffer, xb->buffer_size);
91 xb->allocated_size = new_size;
94 memcpy(xb->buffer + xb->buffer_size, buffer, size);
95 xb->buffer_size += size;
96 xb->buffer[xb->buffer_size] = '\0';
100 enum xer_equivalence_e
101 xer_equivalent(const struct asn_TYPE_descriptor_s *td, const void *struct1,
102 const void *struct2, FILE *opt_debug_stream) {
103 struct xer_buffer xb1 = {0, 0, 0};
104 struct xer_buffer xb2 = {0, 0, 0};
105 asn_enc_rval_t e1, e2;
109 if(!td || !struct1 || !struct2) {
110 if(opt_debug_stream) {
111 if(!td) fprintf(opt_debug_stream, "Type descriptor missing\n");
112 if(!struct1) fprintf(opt_debug_stream, "Structure 1 missing\n");
113 if(!struct2) fprintf(opt_debug_stream, "Structure 2 missing\n");
118 e1 = xer_encode(td, struct1, XER_F_BASIC, xer__buffer_append, &xb1);
119 if(e1.encoded == -1) {
120 if(opt_debug_stream) {
121 fprintf(stderr, "XER Encoding of %s failed\n", td->name);
124 return XEQ_ENCODE1_FAILED;
127 e2 = xer_encode(td, struct2, XER_F_BASIC, xer__buffer_append, &xb2);
128 if(e2.encoded == -1) {
129 if(opt_debug_stream) {
130 fprintf(stderr, "XER Encoding of %s failed\n", td->name);
134 return XEQ_ENCODE1_FAILED;
137 if(xb1.buffer_size != xb2.buffer_size
138 || memcmp(xb1.buffer, xb2.buffer, xb1.buffer_size) != 0) {
139 if(opt_debug_stream) {
140 fprintf(opt_debug_stream,
141 "Structures XER-encoded into different byte streams:\n=== "
142 "Structure 1 ===\n%s\n=== Structure 2 ===\n%s\n",
143 xb1.buffer, xb2.buffer);
147 return XEQ_DIFFERENT;
149 if(opt_debug_stream) {
150 fprintf(opt_debug_stream,
151 "Both structures encoded into the same XER byte stream "
152 "of size %" ASN_PRI_SIZE ":\n%s",
153 xb1.buffer_size, xb1.buffer);
157 rval = xer_decode(NULL, td, (void **)&sptr, xb1.buffer,
163 if(opt_debug_stream) {
164 fprintf(opt_debug_stream,
165 "Structure %s XER decode unexpectedly requires "
167 td->name, xb1.buffer);
172 if(opt_debug_stream) {
173 fprintf(opt_debug_stream,
174 "Structure %s XER decoding resulted in failure.\n",
177 ASN_STRUCT_FREE(*td, sptr);
180 return XEQ_DECODE_FAILED;
183 if(rval.consumed != xb1.buffer_size
184 && ((rval.consumed > xb1.buffer_size)
185 || xer_whitespace_span(xb1.buffer + rval.consumed,
186 xb1.buffer_size - rval.consumed)
187 != (xb1.buffer_size - rval.consumed))) {
188 if(opt_debug_stream) {
189 fprintf(opt_debug_stream,
190 "Round-trip decode of %s required less bytes (%" ASN_PRI_SIZE ") than "
191 "encoded (%" ASN_PRI_SIZE ")\n",
192 td->name, rval.consumed, xb1.buffer_size);
194 ASN_STRUCT_FREE(*td, sptr);
197 return XEQ_ROUND_TRIP_FAILED;
201 * Reuse xb2 to encode newly decoded structure.
204 memset(&xb2, 0, sizeof(xb2));
206 e2 = xer_encode(td, sptr, XER_F_BASIC, xer__buffer_append, &xb2);
207 if(e2.encoded == -1) {
208 if(opt_debug_stream) {
209 fprintf(stderr, "XER Encoding of round-trip decode of %s failed\n",
212 ASN_STRUCT_FREE(*td, sptr);
215 return XEQ_ROUND_TRIP_FAILED;
218 ASN_STRUCT_FREE(*td, sptr);
221 if(xb1.buffer_size != xb2.buffer_size
222 || memcmp(xb1.buffer, xb2.buffer, xb1.buffer_size) != 0) {
223 if(opt_debug_stream) {
224 fprintf(opt_debug_stream,
225 "XER Encoding of round-trip decode of %s resulted in "
226 "different byte stream:\n"
227 "=== Original ===\n%s\n"
228 "=== Round-tripped ===\n%s\n",
229 xb1.buffer, xb2.buffer, td->name);
233 return XEQ_ROUND_TRIP_FAILED;