mirror of
https://github.com/Unidata/netcdf-c.git
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592 lines
15 KiB
C
592 lines
15 KiB
C
/*********************************************************************
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* Copyright 2018, UCAR/Unidata
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* See netcdf/COPYRIGHT file for copying and redistribution conditions.
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*********************************************************************/
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#include "d4includes.h"
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#include <stddef.h>
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/**
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This provides a simple dap4 metadata -> xml printer.
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Used to test the parser
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*/
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#define NCD4_parse t_parse /* to avoid dup defs */
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#include "ncd4types.h"
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#include "ncd4.h"
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/**************************************************/
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typedef struct D4printer {
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NCbytes* out;
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NCbytes* tmp;
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NCD4meta* metadata;
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} D4printer;
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/**************************************************/
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#define CAT(x) ncbytescat(out->out,x)
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#define INDENT(x) indent(out,x)
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/**************************************************/
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/* Forwards */
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static void atomicsToString(D4printer*, union ATOMICS* value, nc_type type);
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static int hasMetaData(NCD4node* node);
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static void indent(D4printer*, int depth);
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static int printAttribute(D4printer*, NCD4node* attr, int depth);
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static int printDataset(D4printer* out, NCD4node* node, int depth);
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static int printDimref(D4printer*, NCD4node* d, int depth);
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static int printGroup(D4printer* out, NCD4node* node, int depth);
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static int printGroupBody(D4printer* out, NCD4node* node, int depth);
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static int printMap(D4printer* out, NCD4node* mapref, int depth);
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static int printMetaData(D4printer* out, NCD4node* node, int depth);
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static int printNode(D4printer*, NCD4node* node, int depth);
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static int printValue(D4printer*, const char* value, int depth);
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static int printVariable(D4printer*, NCD4node* var, int depth);
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static int printXMLAttributeAtomics(D4printer*, char* name, union ATOMICS* value, nc_type type);
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static int printXMLAttributeName(D4printer*, char* name, const char* value);
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static int printXMLAttributeSize(D4printer*, char* name, size_t value);
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static int printXMLAttributeString(D4printer*, char* name, const char* value);
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/**************************************************/
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int
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NCD4_print(NCD4meta* metadata, NCbytes* output)
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{
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int ret = NC_NOERR;
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D4printer out;
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if(metadata == NULL || output == NULL) return THROW(NC_EINVAL);
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out.out = output;
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out.tmp = ncbytesnew();
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out.metadata = metadata;
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ret = printNode(&out,metadata->root,0);
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ncbytesfree(out.tmp);
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return THROW(ret);
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}
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/*************************************************/
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/**
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* Print an arbitrary file and its subnodes in xml
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* Handling newlines is a bit tricky because they may be
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* embedded for e.g. groups, enums,
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* etc. So the rule is that the
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* last newline is elided and left
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* for the caller to print.
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* Exceptions: printMetadata
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* printDimrefs.
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*
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* @param out - the output buffer
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* @param node - the tree to print
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* @param depth - the depth of our code
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*/
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static int
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printNode(D4printer* out, NCD4node* node, int depth)
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{
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int ret = NC_NOERR;
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size_t i;
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char* fqn = NULL;
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switch (node->sort) {
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case NCD4_GROUP:
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if(node->group.isdataset)
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printDataset(out,node,depth);
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else
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printGroup(out,node,depth);
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break;
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case NCD4_DIM:
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INDENT(depth);
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CAT("<Dimension");
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if(node->name != NULL)
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printXMLAttributeName(out, "name", node->name);
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printXMLAttributeSize(out, "size", node->dim.size);
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if(node->dim.isunlimited)
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printXMLAttributeString(out, UCARTAGUNLIM, "1");
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CAT("/>");
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break;
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case NCD4_TYPE:
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switch (node->subsort) {
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default: break;
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case NC_OPAQUE:
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INDENT(depth); CAT("<Opaque");
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ncbytesclear(out->tmp);
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printXMLAttributeName(out, "name", node->name);
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if(node->opaque.size > 0)
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printXMLAttributeSize(out, "size", node->opaque.size);
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CAT("/>");
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break;
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case NC_ENUM:
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INDENT(depth); CAT("<Enumeration");
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printXMLAttributeName(out, "name", node->name);
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if(node->basetype->subsort <= NC_MAX_ATOMIC_TYPE)
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printXMLAttributeName(out, "basetype", node->basetype->name);
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else {
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char* fqn = NULL;
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printXMLAttributeName(out, "basetype", (fqn = NCD4_makeFQN(node->basetype)));
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nullfree(fqn);
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}
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CAT(">\n");
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depth++;
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for(i=0;i<nclistlength(node->en.econsts);i++) {
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NCD4node* ec = (NCD4node*)nclistget(node->en.econsts,i);
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INDENT(depth);
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CAT("<EnumConst");
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printXMLAttributeName(out, "name", ec->name);
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printXMLAttributeAtomics(out, "value", &ec->en.ecvalue, node->basetype->subsort);
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CAT("/>\n");
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}
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depth--;
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INDENT(depth); CAT("</Enumeration>");
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break;
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case NC_STRUCT:
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INDENT(depth);
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CAT("<Structure");
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printXMLAttributeName(out, "name", node->name);
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CAT(">\n");
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depth++;
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for(i=0;i<nclistlength(node->vars);i++) {
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NCD4node* field = (NCD4node*)nclistget(node->vars,i);
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printVariable(out,field,depth);
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CAT("\n");
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}
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if((ret=printMetaData(out,node,depth))) goto done;
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depth--;
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INDENT(depth);
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CAT("</Structure>");
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break;
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case NC_SEQ:
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INDENT(depth);
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CAT("<Vlen");
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printXMLAttributeName(out, "name", node->name);
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printXMLAttributeName(out, "type", (fqn=NCD4_makeFQN(node->basetype)));
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if(hasMetaData(node)) {
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CAT(">\n");
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depth++;
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if((ret=printMetaData(out,node,depth))) goto done;
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depth--;
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INDENT(depth);
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CAT("</Vlen>");
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} else
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CAT("/>");
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break;
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} break;
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case NCD4_VAR: /* Only top-level vars are printed here */
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if(ISTOPLEVEL(node)) {
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if((ret=printVariable(out,node,depth))) goto done;
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CAT("\n");
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}
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break;
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default: abort(); break;
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}
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done:
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nullfree(fqn);
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return THROW(ret);
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}
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static int
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printVariable(D4printer* out, NCD4node* var, int depth)
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{
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int ret = NC_NOERR;
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NCD4node* basetype = var->basetype;
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char* fqn = NULL;
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INDENT(depth); CAT("<");
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switch (var->subsort) {
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default:
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CAT(basetype->name);
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printXMLAttributeName(out, "name", var->name);
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break;
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case NC_ENUM:
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CAT("Enum");
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printXMLAttributeName(out, "name", var->name);
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printXMLAttributeName(out, "enum", (fqn=NCD4_makeFQN(basetype)));
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break;
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case NC_OPAQUE:
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CAT("Opaque");
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printXMLAttributeName(out, "name", var->name);
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printXMLAttributeName(out, "type", (fqn=NCD4_makeFQN(basetype)));
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break;
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case NC_SEQ:
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CAT("Seq");
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printXMLAttributeName(out, "name", var->name);
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printXMLAttributeName(out, "type", (fqn=NCD4_makeFQN(basetype)));
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break;
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case NC_STRUCT:
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CAT("Struct");
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printXMLAttributeName(out, "name", var->name);
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printXMLAttributeName(out, "type", (fqn=NCD4_makeFQN(basetype)));
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break;
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}
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if(hasMetaData(var)) {
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CAT(">\n");
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depth++;
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if((ret=printMetaData(out,var,depth))) goto done;
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depth--;
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INDENT(depth); CAT("</");
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if(basetype->subsort == NC_ENUM)
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CAT("Enum");
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else if(basetype->subsort == NC_OPAQUE)
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CAT("Opaque");
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else if(basetype->subsort == NC_STRUCT)
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CAT("Struct");
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else if(basetype->subsort == NC_SEQ)
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CAT("Sequence");
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else
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CAT(basetype->name);
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CAT(">");
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} else
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CAT("/>");
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done:
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nullfree(fqn);
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return THROW(ret);
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}
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static int
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printDataset(D4printer* out, NCD4node* node, int depth)
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{
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int ret = NC_NOERR;
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CAT("<Dataset\n");
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depth++;
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INDENT(depth);
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printXMLAttributeName(out,"name",node->group.datasetname);
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CAT("\n");
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INDENT(depth);
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printXMLAttributeName(out,"dapVersion",node->group.dapversion);
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CAT("\n");
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INDENT(depth);
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printXMLAttributeName(out,"dmrVersion",node->group.dmrversion);
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CAT("\n");
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INDENT(depth);
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printXMLAttributeName(out,"xmlns","http://xml.opendap.org/ns/DAP/4.0#");
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CAT("\n");
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INDENT(depth);
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printXMLAttributeName(out,"xmlns:dap","http://xml.opendap.org/ns/DAP/4.0#");
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depth--;
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CAT(">\n");
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depth++;
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ret = printGroupBody(out,node,depth);
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depth--;
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INDENT(depth);
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CAT("</Dataset>");
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return THROW(ret);
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}
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static int
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printGroup(D4printer* out, NCD4node* node, int depth)
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{
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int ret = NC_NOERR;
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INDENT(depth);
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CAT("<Group");
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printXMLAttributeName(out,"name",node->name);
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CAT(">\n");
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depth++;
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ret = printGroupBody(out,node,depth);
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depth--;
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INDENT(depth);
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CAT("</Group>");
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return THROW(ret);
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}
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static int
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printGroupBody(D4printer* out, NCD4node* node, int depth)
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{
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int ret = NC_NOERR;
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size_t i;
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size_t ngroups = nclistlength(node->groups);
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size_t nvars = nclistlength(node->vars);
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size_t ntypes = nclistlength(node->types);
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size_t ndims = nclistlength(node->dims);
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size_t nattrs = nclistlength(node->attributes);
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if(ndims > 0) {
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INDENT(depth);
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CAT("<Dimensions>\n");
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depth++;
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for(i=0;i<nclistlength(node->dims);i++) {
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NCD4node* dim = (NCD4node*)nclistget(node->dims,i);
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printNode(out,dim,depth);
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CAT("\n");
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}
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depth--;
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INDENT(depth);
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CAT("</Dimensions>\n");
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}
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if(ntypes > 0) {
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INDENT(depth);
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CAT("<Types>\n");
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depth++;
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for(i=0;i<nclistlength(node->types);i++) {
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NCD4node* type = (NCD4node*)nclistget(node->types,i);
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if(type->subsort <= NC_MAX_ATOMIC_TYPE) continue;
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printNode(out,type,depth);
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CAT("\n");
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}
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depth--;
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INDENT(depth);
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CAT("</Types>\n");
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}
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if(nvars > 0) {
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INDENT(depth);
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CAT("<Variables>\n");
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depth++;
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for(i=0;i<nclistlength(node->vars);i++) {
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NCD4node* var = (NCD4node*)nclistget(node->vars,i);
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printNode(out,var,depth);
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}
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depth--;
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INDENT(depth);
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CAT("</Variables>\n");
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}
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if(nattrs > 0) {
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for(i=0;i<nclistlength(node->attributes);i++) {
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NCD4node* attr = (NCD4node*)nclistget(node->attributes,i);
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printAttribute(out,attr,depth);
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CAT("\n");
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}
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}
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if(ngroups > 0) {
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INDENT(depth);
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CAT("<Groups>\n");
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depth++;
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for(i=0;i<nclistlength(node->groups);i++) {
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NCD4node* g = (NCD4node*)nclistget(node->groups,i);
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printNode(out,g,depth);
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CAT("\n");
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}
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depth--;
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INDENT(depth);
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CAT("</Groups>\n");
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}
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return THROW(ret);
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}
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static int
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printMetaData(D4printer* out, NCD4node* node, int depth)
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{
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int ret = NC_NOERR;
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size_t i;
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if(nclistlength(node->dims) > 0) {
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for(i=0;i<nclistlength(node->dims);i++) {
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NCD4node* dim = (NCD4node*)nclistget(node->dims,i);
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printDimref(out,dim,depth);
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CAT("\n");
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}
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}
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if(nclistlength(node->maps) > 0) {
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for(i=0;i<nclistlength(node->maps);i++) {
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NCD4node* mapref = (NCD4node*)nclistget(node->maps,i);
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printMap(out,mapref,depth);
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CAT("\n");
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}
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}
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if(nclistlength(node->attributes) > 0) {
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for(i=0;i<nclistlength(node->attributes);i++) {
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NCD4node* attr = (NCD4node*)nclistget(node->attributes,i);
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printAttribute(out,attr,depth);
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CAT("\n");
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}
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}
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return THROW(ret);
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}
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static int
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printXMLAttributeName(D4printer* out, char* name, const char* value)
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{
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int ret = NC_NOERR;
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char* escaped = NULL;
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if(name == NULL) return THROW(ret);
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if(value == NULL) value = "";
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CAT(" "); CAT(name); CAT("=\"");
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/* add xml entity escaping */
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escaped = NCD4_entityescape(value);
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CAT(escaped);
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CAT("\"");
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nullfree(escaped);
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return THROW(ret);
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}
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static int
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printXMLAttributeString(D4printer* out, char* name, const char* value)
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{
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int ret = NC_NOERR;
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char* escaped = NULL;
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if(name == NULL) return THROW(ret);
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CAT(" "); CAT(name);
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CAT("=");
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CAT("\"");
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if(value == NULL) value = "";
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/* add xml entity escaping */
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escaped = NCD4_entityescape(value);
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CAT(escaped);
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CAT("\"");
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nullfree(escaped);
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return THROW(ret);
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}
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static int
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printXMLAttributeSize(D4printer* out, char* name, size_t value)
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{
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union ATOMICS atomics;
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atomics.u64[0] = (unsigned long long)value;
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return printXMLAttributeAtomics(out,name,&atomics,NC_UINT64);
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}
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static int
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printXMLAttributeAtomics(D4printer* out, char* name, union ATOMICS* value, nc_type type)
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{
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int ret = NC_NOERR;
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CAT(" "); CAT(name); CAT("=\"");
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atomicsToString(out,value,type);
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CAT(ncbytescontents(out->tmp));
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CAT("\"");
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return THROW(ret);
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}
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static int
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printAttribute(D4printer* out, NCD4node* attr, int depth)
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{
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int ret = NC_NOERR;
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size_t i = 0;
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char* fqn = NULL;
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INDENT(depth); CAT("<Attribute");
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printXMLAttributeName(out,"name",attr->name);
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if(attr->basetype->subsort <= NC_MAX_ATOMIC_TYPE)
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printXMLAttributeName(out,"type",attr->basetype->name);
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else {
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printXMLAttributeName(out,"type",(fqn = NCD4_makeFQN(attr->basetype)));
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}
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CAT(">\n");
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depth++;
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for(i=0;i<nclistlength(attr->attr.values);i++) {
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printValue(out,(const char*)nclistget(attr->attr.values,i),depth);
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CAT("\n");
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}
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depth--;
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INDENT(depth);
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CAT("</Attribute>");
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nullfree(fqn);
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return THROW(ret);
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}
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/**
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* Print the dimrefs for a variable's dimensions.
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* If the variable has a non-whole projection, then use size
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* else use the dimension name.
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*
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* @param var whole dimensions are to be printed
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* @throws DapException
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*/
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static int
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printDimref(D4printer* out, NCD4node* d, int depth)
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{
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char* fqn = NULL;
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INDENT(depth);
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CAT("<Dim");
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printXMLAttributeName(out, "name", (fqn=NCD4_makeFQN(d)));
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CAT("/>");
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nullfree(fqn);
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return THROW(NC_NOERR);
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}
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static int
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printValue(D4printer* out, const char* value, int depth)
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{
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int ret = NC_NOERR;
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INDENT(depth);
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CAT("<Value");
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printXMLAttributeString(out,"value",value);
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CAT("/>");
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return THROW(ret);
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}
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static int
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printMap(D4printer* out, NCD4node* mapref, int depth)
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{
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char* fqn = NULL;
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INDENT(depth);
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CAT("<Map");
|
|
printXMLAttributeName(out, "name", (fqn=NCD4_makeFQN(mapref)));
|
|
CAT("/>");
|
|
nullfree(fqn);
|
|
return THROW(NC_NOERR);
|
|
}
|
|
|
|
/*************************************************/
|
|
/* Misc. Static Utilities */
|
|
|
|
static void
|
|
indent(D4printer* out, int depth)
|
|
{
|
|
while(depth-- > 0) ncbytescat(out->out," ");
|
|
}
|
|
|
|
static int
|
|
hasMetaData(NCD4node* node)
|
|
{
|
|
return (nclistlength(node->dims) > 0
|
|
|| nclistlength(node->attributes) > 0
|
|
|| nclistlength(node->maps) > 0);
|
|
}
|
|
|
|
static void
|
|
atomicsToString(D4printer* out, union ATOMICS* value, nc_type type)
|
|
{
|
|
char tmp[256];
|
|
ncbytesclear(out->tmp);
|
|
switch (type) {
|
|
case NC_CHAR:
|
|
snprintf(tmp,sizeof(tmp),"'%c'",value->i8[0]);
|
|
break;
|
|
case NC_BYTE:
|
|
snprintf(tmp,sizeof(tmp),"%d",value->i8[0]);
|
|
break;
|
|
case NC_UBYTE:
|
|
snprintf(tmp,sizeof(tmp),"%u",value->u8[0]);
|
|
break;
|
|
case NC_SHORT:
|
|
snprintf(tmp,sizeof(tmp),"%d",value->i16[0]);
|
|
break;
|
|
case NC_USHORT:
|
|
snprintf(tmp,sizeof(tmp),"%u",value->u16[0]);
|
|
break;
|
|
case NC_INT:
|
|
snprintf(tmp,sizeof(tmp),"%d",value->i32[0]);
|
|
break;
|
|
case NC_UINT:
|
|
snprintf(tmp,sizeof(tmp),"%u",value->u32[0]);
|
|
break;
|
|
case NC_INT64:
|
|
snprintf(tmp,sizeof(tmp),"%lld",value->i64[0]);
|
|
break;
|
|
case NC_UINT64:
|
|
snprintf(tmp,sizeof(tmp),"%llu",value->u64[0]);
|
|
break;
|
|
case NC_FLOAT:
|
|
snprintf(tmp,sizeof(tmp),"%g",value->f32[0]);
|
|
break;
|
|
case NC_DOUBLE:
|
|
snprintf(tmp,sizeof(tmp),"%g",value->f64[0]);
|
|
break;
|
|
case NC_STRING:
|
|
ncbytescat(out->tmp,"\"");
|
|
ncbytescat(out->tmp,value->s[0]);
|
|
ncbytescat(out->tmp,"\"");
|
|
break;
|
|
default: abort();
|
|
}
|
|
if(type != NC_STRING) ncbytescat(out->tmp,tmp);
|
|
ncbytesnull(out->tmp);
|
|
}
|