--- /dev/null
+/*
+ * Copyright (c) 2017 Lev Walkin <vlm@lionet.info>.
+ * All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#include <asn_internal.h>
+#include <constr_SET_OF.h>
+
+/*
+ * Return a standardized complex structure.
+ */
+#undef RETURN
+#define RETURN(_code) \
+ do { \
+ rval.code = _code; \
+ rval.consumed = consumed_myself; \
+ return rval; \
+ } while(0)
+
+#undef XER_ADVANCE
+#define XER_ADVANCE(num_bytes) \
+ do { \
+ size_t num = num_bytes; \
+ buf_ptr = ((const char *)buf_ptr) + num; \
+ size -= num; \
+ consumed_myself += num; \
+ } while(0)
+
+/*
+ * Decode the XER (XML) data.
+ */
+asn_dec_rval_t
+SET_OF_decode_xer(const asn_codec_ctx_t *opt_codec_ctx,
+ const asn_TYPE_descriptor_t *td, void **struct_ptr,
+ const char *opt_mname, const void *buf_ptr, size_t size) {
+ /*
+ * Bring closer parts of structure description.
+ */
+ const asn_SET_OF_specifics_t *specs = (const asn_SET_OF_specifics_t *)td->specifics;
+ const asn_TYPE_member_t *element = td->elements;
+ const char *elm_tag;
+ const char *xml_tag = opt_mname ? opt_mname : td->xml_tag;
+
+ /*
+ * ... and parts of the structure being constructed.
+ */
+ void *st = *struct_ptr; /* Target structure. */
+ asn_struct_ctx_t *ctx; /* Decoder context */
+
+ asn_dec_rval_t rval = {RC_OK, 0}; /* Return value from a decoder */
+ ssize_t consumed_myself = 0; /* Consumed bytes from ptr */
+
+ /*
+ * Create the target structure if it is not present already.
+ */
+ if(st == 0) {
+ st = *struct_ptr = CALLOC(1, specs->struct_size);
+ if(st == 0) RETURN(RC_FAIL);
+ }
+
+ /* Which tag is expected for the downstream */
+ if(specs->as_XMLValueList) {
+ elm_tag = (specs->as_XMLValueList == 1) ? 0 : "";
+ } else {
+ elm_tag = (*element->name)
+ ? element->name : element->type->xml_tag;
+ }
+
+ /*
+ * Restore parsing context.
+ */
+ ctx = (asn_struct_ctx_t *)((char *)st + specs->ctx_offset);
+
+ /*
+ * Phases of XER/XML processing:
+ * Phase 0: Check that the opening tag matches our expectations.
+ * Phase 1: Processing body and reacting on closing tag.
+ * Phase 2: Processing inner type.
+ */
+ for(; ctx->phase <= 2;) {
+ pxer_chunk_type_e ch_type; /* XER chunk type */
+ ssize_t ch_size; /* Chunk size */
+ xer_check_tag_e tcv; /* Tag check value */
+
+ /*
+ * Go inside the inner member of a set.
+ */
+ if(ctx->phase == 2) {
+ asn_dec_rval_t tmprval = {RC_OK, 0};
+
+ /* Invoke the inner type decoder, m.b. multiple times */
+ ASN_DEBUG("XER/SET OF element [%s]", elm_tag);
+ tmprval = element->type->op->xer_decoder(opt_codec_ctx,
+ element->type,
+ &ctx->ptr, elm_tag,
+ buf_ptr, size);
+ if(tmprval.code == RC_OK) {
+ asn_anonymous_set_ *list = _A_SET_FROM_VOID(st);
+ if(ASN_SET_ADD(list, ctx->ptr) != 0)
+ RETURN(RC_FAIL);
+ ctx->ptr = 0;
+ XER_ADVANCE(tmprval.consumed);
+ } else {
+ XER_ADVANCE(tmprval.consumed);
+ RETURN(tmprval.code);
+ }
+ ctx->phase = 1; /* Back to body processing */
+ ASN_DEBUG("XER/SET OF phase => %d", ctx->phase);
+ /* Fall through */
+ }
+
+ /*
+ * Get the next part of the XML stream.
+ */
+ ch_size = xer_next_token(&ctx->context,
+ buf_ptr, size, &ch_type);
+ if(ch_size == -1) {
+ RETURN(RC_FAIL);
+ } else {
+ switch(ch_type) {
+ case PXER_WMORE:
+ RETURN(RC_WMORE);
+ case PXER_COMMENT: /* Got XML comment */
+ case PXER_TEXT: /* Ignore free-standing text */
+ XER_ADVANCE(ch_size); /* Skip silently */
+ continue;
+ case PXER_TAG:
+ break; /* Check the rest down there */
+ }
+ }
+
+ tcv = xer_check_tag(buf_ptr, ch_size, xml_tag);
+ ASN_DEBUG("XER/SET OF: tcv = %d, ph=%d t=%s",
+ tcv, ctx->phase, xml_tag);
+ switch(tcv) {
+ case XCT_CLOSING:
+ if(ctx->phase == 0) break;
+ ctx->phase = 0;
+ /* Fall through */
+ case XCT_BOTH:
+ if(ctx->phase == 0) {
+ /* No more things to decode */
+ XER_ADVANCE(ch_size);
+ ctx->phase = 3; /* Phase out */
+ RETURN(RC_OK);
+ }
+ /* Fall through */
+ case XCT_OPENING:
+ if(ctx->phase == 0) {
+ XER_ADVANCE(ch_size);
+ ctx->phase = 1; /* Processing body phase */
+ continue;
+ }
+ /* Fall through */
+ case XCT_UNKNOWN_OP:
+ case XCT_UNKNOWN_BO:
+
+ ASN_DEBUG("XER/SET OF: tcv=%d, ph=%d", tcv, ctx->phase);
+ if(ctx->phase == 1) {
+ /*
+ * Process a single possible member.
+ */
+ ctx->phase = 2;
+ continue;
+ }
+ /* Fall through */
+ default:
+ break;
+ }
+
+ ASN_DEBUG("Unexpected XML tag in SET OF");
+ break;
+ }
+
+ ctx->phase = 3; /* "Phase out" on hard failure */
+ RETURN(RC_FAIL);
+}
+
+typedef struct xer_tmp_enc_s {
+ void *buffer;
+ size_t offset;
+ size_t size;
+} xer_tmp_enc_t;
+
+static int
+SET_OF_encode_xer_callback(const void *buffer, size_t size, void *key) {
+ xer_tmp_enc_t *t = (xer_tmp_enc_t *)key;
+ if(t->offset + size >= t->size) {
+ size_t newsize = (t->size << 2) + size;
+ void *p = REALLOC(t->buffer, newsize);
+ if(!p) return -1;
+ t->buffer = p;
+ t->size = newsize;
+ }
+ memcpy((char *)t->buffer + t->offset, buffer, size);
+ t->offset += size;
+ return 0;
+}
+
+static int
+SET_OF_xer_order(const void *aptr, const void *bptr) {
+ const xer_tmp_enc_t *a = (const xer_tmp_enc_t *)aptr;
+ const xer_tmp_enc_t *b = (const xer_tmp_enc_t *)bptr;
+ size_t minlen = a->offset;
+ int ret;
+ if(b->offset < minlen) minlen = b->offset;
+ /* Well-formed UTF-8 has this nice lexicographical property... */
+ ret = memcmp(a->buffer, b->buffer, minlen);
+ if(ret != 0) return ret;
+ if(a->offset == b->offset)
+ return 0;
+ if(a->offset == minlen)
+ return -1;
+ return 1;
+}
+
+asn_enc_rval_t
+SET_OF_encode_xer(const asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
+ enum xer_encoder_flags_e flags, asn_app_consume_bytes_f *cb,
+ void *app_key) {
+ asn_enc_rval_t er = {0,0,0};
+ const asn_SET_OF_specifics_t *specs = (const asn_SET_OF_specifics_t *)td->specifics;
+ const asn_TYPE_member_t *elm = td->elements;
+ const asn_anonymous_set_ *list = _A_CSET_FROM_VOID(sptr);
+ const char *mname = specs->as_XMLValueList
+ ? 0 : ((*elm->name) ? elm->name : elm->type->xml_tag);
+ size_t mlen = mname ? strlen(mname) : 0;
+ int xcan = (flags & XER_F_CANONICAL);
+ xer_tmp_enc_t *encs = 0;
+ size_t encs_count = 0;
+ void *original_app_key = app_key;
+ asn_app_consume_bytes_f *original_cb = cb;
+ int i;
+
+ if(!sptr) ASN__ENCODE_FAILED;
+
+ if(xcan) {
+ encs = (xer_tmp_enc_t *)MALLOC(list->count * sizeof(encs[0]));
+ if(!encs) ASN__ENCODE_FAILED;
+ cb = SET_OF_encode_xer_callback;
+ }
+
+ er.encoded = 0;
+
+ for(i = 0; i < list->count; i++) {
+ asn_enc_rval_t tmper = {0,0,0};
+
+ void *memb_ptr = list->array[i];
+ if(!memb_ptr) continue;
+
+ if(encs) {
+ memset(&encs[encs_count], 0, sizeof(encs[0]));
+ app_key = &encs[encs_count];
+ encs_count++;
+ }
+
+ if(mname) {
+ if(!xcan) ASN__TEXT_INDENT(1, ilevel);
+ ASN__CALLBACK3("<", 1, mname, mlen, ">", 1);
+ }
+
+ if(!xcan && specs->as_XMLValueList == 1)
+ ASN__TEXT_INDENT(1, ilevel + 1);
+ tmper = elm->type->op->xer_encoder(elm->type, memb_ptr,
+ ilevel + (specs->as_XMLValueList != 2),
+ flags, cb, app_key);
+ if(tmper.encoded == -1) return tmper;
+ er.encoded += tmper.encoded;
+ if(tmper.encoded == 0 && specs->as_XMLValueList) {
+ const char *name = elm->type->xml_tag;
+ size_t len = strlen(name);
+ ASN__CALLBACK3("<", 1, name, len, "/>", 2);
+ }
+
+ if(mname) {
+ ASN__CALLBACK3("</", 2, mname, mlen, ">", 1);
+ }
+
+ }
+
+ if(!xcan) ASN__TEXT_INDENT(1, ilevel - 1);
+
+ if(encs) {
+ xer_tmp_enc_t *enc = encs;
+ xer_tmp_enc_t *end = encs + encs_count;
+ ssize_t control_size = 0;
+
+ er.encoded = 0;
+ cb = original_cb;
+ app_key = original_app_key;
+ qsort(encs, encs_count, sizeof(encs[0]), SET_OF_xer_order);
+
+ for(; enc < end; enc++) {
+ ASN__CALLBACK(enc->buffer, enc->offset);
+ FREEMEM(enc->buffer);
+ enc->buffer = 0;
+ control_size += enc->offset;
+ }
+ assert(control_size == er.encoded);
+ }
+
+ goto cleanup;
+cb_failed:
+ ASN__ENCODE_FAILED;
+cleanup:
+ if(encs) {
+ size_t n;
+ for(n = 0; n < encs_count; n++) {
+ FREEMEM(encs[n].buffer);
+ }
+ FREEMEM(encs);
+ }
+ ASN__ENCODED_OK(er);
+}
Code Review / sim / e2-interface.git / blobdiff