mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-11-27 07:30:33 +08:00
496 lines
13 KiB
C
496 lines
13 KiB
C
/*! \file
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Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
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2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014,
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2015, 2016, 2017, 2018
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University Corporation for Atmospheric Research/Unidata.
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See \ref copyright file for more info.
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*/
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#include "includes.h"
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#ifdef ENABLE_CML
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/**************************************************/
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/* Code for generating CML data lists*/
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/**************************************************/
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typedef enum Comma {FIRST, SECOND, SUPPRESS } Comma;
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#define setcomma(comma) (comma)=((comma)!=SUPPRESS?SECOND:SUPPRESS)
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#define clrcomma(comma) (comma)=((comma)!=SUPPRESS?LEAD:SUPPRESS)
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/* Forward*/
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static void gencml_data(Symbol* sym, Datasrc*, Datalist*, Bytebuffer*);
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static void gencml_primdata(Symbol*, Datasrc*, Datalist*, Bytebuffer*);
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static void gencml_fieldarray(Symbol*, Datasrc*, Dimset*, int, Bytebuffer*, Comma*);
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static void gencml_arraydatar(Symbol* basetype,
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Datasrc* src,
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Odometer* odom,
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int index,
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Comma*,
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Bytebuffer* code);
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static void gencml_stringarray(Symbol*, Datasrc*, Bytebuffer*);
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/* Datalist rules: see the rules on the man page */
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/* Specialty wrappers for gencml_data */
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void
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gencml_attrdata(Symbol* asym, Bytebuffer* databuf)
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{
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int first = 1;
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Datasrc* src;
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nc_type typecode = asym->typ.basetype->typ.typecode;
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if(asym->data == NULL) return;
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if(typecode == NC_CHAR) {gen_charattr(asym,databuf); return;}
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src = datalist2src(asym->data);
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if(typecode == NC_STRING) {gencml_stringarray(asym,src,databuf); return;}
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while(srcmore(src)) {
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if(!first) bbCat(databuf," "); else first = 0;
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gencml_data(asym->typ.basetype,src,NULL,databuf);
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}
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}
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void
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gencml_scalardata(Symbol* vsym, Bytebuffer* databuf)
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{
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Datasrc* src;
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if(vsym->data == NULL) return;
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src = datalist2src(vsym->data);
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gencml_data(vsym->typ.basetype,src,
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vsym->var.special._Fillvalue,databuf);
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if(srcmore(src)) {
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semerror(srcline(src),"Extra data at end of datalist");
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}
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}
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static void
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gencml_data(Symbol* tsym, Datasrc* datasrc, Datalist* fillsrc,
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Bytebuffer* databuf)
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{
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int usecmpd;
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Constant* con = srcpeek(datasrc);
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if(con == NULL || con->nctype == NC_FILLVALUE) {
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srcnext(datasrc);
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gencml_fillvalue(tsym,fillsrc,datasrc,databuf);
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return;
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}
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switch (tsym->subclass) {
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case NC_ENUM:
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case NC_OPAQUE:
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case NC_PRIM:
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if(issublist(datasrc)) {
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semerror(srcline(datasrc),"Expected primitive found {..}");
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}
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gencml_primdata(tsym,datasrc,fillsrc,databuf);
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break;
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case NC_COMPOUND: {
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int i;
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if(!issublist(datasrc)) {
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semerror(srcline(datasrc),"Compound data must be enclosed in {..}");
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}
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srcpush(datasrc);
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bbCat(databuf,"<compound type=\"");
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bbCat(databuf,xtypename(tsym));
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bbCat(databuf,"\">\n");
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for(i=0;i<listlength(tsym->subnodes);i++) {
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Symbol* field = (Symbol*)listget(tsym->subnodes,i);
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if(!srcmore(datasrc)) { /* generate a fill value*/
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Datalist* fillsrc = getfiller(tsym);
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gencml_data(field,datasrc,fillsrc,databuf);
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} else
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gencml_data(field,datasrc,NULL,databuf);
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}
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bbCat(databuf,"</compound>\n");
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srcpop(datasrc);
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} break;
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case NC_VLEN:
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if(!issublist(datasrc)) {
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semerror(srcline(datasrc),"Vlen data must be enclosed in {..}");
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}
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srcpush(datasrc);
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bbCat(databuf,"<vlen type=\"");
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bbCat(databuf,xtypename(tsym));
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bbCat(databuf,"\">\n");
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gencml_data(tsym->typ.basetype,datasrc,NULL,databuf);
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bbCat(databuf,"\n</vlen>\n");
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srcpop(datasrc);
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break;
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case NC_FIELD:
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/* enclose in braces if and only if field is an array */
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usecmpd = (issublist(datasrc) && tsym->typ.dimset.ndims > 0);
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if(usecmpd) srcpush(datasrc);
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bbCat(databuf,"<field name=");
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bbCat(databuf,xname(tsym));
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bbCat(databuf," type=\"");
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bbCat(databuf,xtypename(tsym->typ.basetype));
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bbCat(databuf,"\"");
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if(isprimplus(tsym->typ.basetype->typ.typecode)) {
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bbCat(databuf," values=\"");
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} else {
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bbCat(databuf," >\n");
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}
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if(tsym->typ.dimset.ndims > 0) {
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Comma comma = (isprimplus(tsym->typ.basetype->typ.typecode)?SUPPRESS:SECOND);
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gencml_fieldarray(tsym->typ.basetype,datasrc,&tsym->typ.dimset,0,databuf,&comma);
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} else {
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gencml_data(tsym->typ.basetype,datasrc,NULL,databuf);
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}
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if(isprimplus(tsym->typ.basetype->typ.typecode)) {
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bbCat(databuf,"\" >\n");
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} else {
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bbCat(databuf,"</field>\n");
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}
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if(usecmpd) srcpop(datasrc);
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break;
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default: PANIC1("gencml_data: unexpected subclass %d",tsym->subclass);
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}
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}
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/* Used only for structure field arrays*/
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static void
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gencml_fieldarray(Symbol* basetype, Datasrc* src, Dimset* dimset, int index,
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Bytebuffer* databuf, Comma* commap)
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{
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int i;
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Symbol* dim = dimset->dimsyms[index];
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unsigned int size = dim->dim.size;
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int lastdim = (index == (dimset->ndims - 1)); /* last dimension*/
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nc_type typecode = basetype->typ.typecode;
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if(typecode == NC_CHAR) {
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/* Collect the char field in a separate buffer */
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Bytebuffer* fieldbuf = bbNew();
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gen_charfield(src,dimset,index,fieldbuf);
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/* Add to the existing data buf as a single constant */
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xquotestring(fieldbuf);
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switch (*commap) {
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case FIRST: break;
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case SUPPRESS: bbCat(databuf," "); break;
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case SECOND: bbCat(databuf,"\n"); break;
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}
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bbAppendn(databuf,bbContents(fieldbuf),bbLength(fieldbuf));
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setcomma(*commap);
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bbFree(fieldbuf);
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} else if(typecode == NC_STRING) {
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Bytebuffer* fieldbuf = bbNew();
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gencml_stringarray(basetype,src,fieldbuf);
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switch (*commap) {
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case FIRST: break;
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case SUPPRESS: bbCat(databuf," "); break;
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case SECOND: bbCat(databuf,"\n"); break;
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}
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bbAppendn(databuf,bbContents(fieldbuf),bbLength(fieldbuf));
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setcomma(*commap);
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bbFree(fieldbuf);
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} else {
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ASSERT(size != 0);
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for(i=0;i<size;i++) {
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if(lastdim) {
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if(!isprimplus(typecode) && *commap==SECOND)
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bbCat(databuf,"\n");
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gencml_data(basetype,src,NULL,databuf);
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setcomma(*commap);
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} else { /* !lastdim*/
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gencml_fieldarray(basetype,src,dimset,index+1,databuf,commap);
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}
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}
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}
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}
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static void
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gencml_primdata(Symbol* tsym, Datasrc* src, Datalist* fillsrc,
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Bytebuffer* databuf)
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{
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Constant target, *prim;
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prim = srcnext(src);
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if(prim == NULL || prim->nctype == NC_FILLVALUE) {
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gencml_fillvalue(tsym,fillsrc,src,databuf);
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return;
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}
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target.nctype = tsym->typ.typecode;
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if(prim == NULL) {
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#ifdef GENFILL
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/* generate a fill value*/
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nc_getfill(&target);
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/* fall thru*/
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#else
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return;
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#endif
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}
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ASSERT(prim->nctype != NC_COMPOUND);
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switch (target.nctype) {
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case NC_ECONST:
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if(tsym->subclass != NC_ENUM) {
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semerror(prim->lineno,"Conversion to enum not supported (yet)");
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nc_getfill(&target);
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} else {
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target.nctype = NC_ECONST;
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convert1(prim,&target);
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}
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break;
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case NC_OPAQUE:
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convert1(prim,&target);
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setprimlength(&target,tsym->typ.size*2);
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break;
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default:
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convert1(prim,&target);
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break;
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}
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bbCat(databuf,xconst(&target));
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}
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void
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gencml_fillvalue(Symbol* tsym, Datalist* fillsrc, Datasrc* src,
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Bytebuffer* databuf)
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{
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Datalist* list = NULL;
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ASSERT(tsym->objectclass == NC_TYPE);
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list = fillsrc;
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if(list == NULL) list = getfiller(tsym);
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srcpushlist(src,list);
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gencml_data(tsym,src,NULL,databuf);
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srcpop(src);
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}
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/* Result is a pool string or a constant => do not free*/
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char*
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xconst(Constant* ci)
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{
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char tmp[64];
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tmp[0] = '\0';
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switch (ci->nctype) {
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case NC_CHAR: {
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char* escaped;
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char* result;
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tmp[0] = ci->value.charv;
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tmp[1] = '\0';
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escaped = xescapify(tmp,'\0',1);
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result = poolalloc(1+2+strlen(escaped));
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strcat(result,escaped);
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return result;
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} break;
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case NC_BYTE:
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snprintf(tmp,sizeof(tmp),"%hhd",ci->value.int8v);
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break;
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case NC_SHORT:
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snprintf(tmp,sizeof(tmp),"%hd",ci->value.int16v);
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break;
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case NC_INT:
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snprintf(tmp,sizeof(tmp),"%d",ci->value.int32v);
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break;
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case NC_FLOAT:
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snprintf(tmp,sizeof(tmp),"%.8g",ci->value.floatv);
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break;
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case NC_DOUBLE:
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snprintf(tmp,sizeof(tmp),"%.16g",ci->value.doublev);
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break;
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case NC_UBYTE:
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snprintf(tmp,sizeof(tmp),"%hhu",ci->value.uint8v);
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break;
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case NC_USHORT:
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snprintf(tmp,sizeof(tmp),"%hu",ci->value.uint16v);
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break;
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case NC_UINT:
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snprintf(tmp,sizeof(tmp),"%uU",ci->value.uint32v);
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break;
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case NC_INT64:
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snprintf(tmp,sizeof(tmp),"%lldLL",ci->value.int64v);
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break;
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case NC_UINT64:
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snprintf(tmp,sizeof(tmp),"%lluLLU",ci->value.uint64v);
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break;
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case NC_ECONST:
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snprintf(tmp,sizeof(tmp),"%s",cname(ci->value.enumv));
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break;
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case NC_STRING:
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{
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char* escaped = xescapify(ci->value.stringv.stringv,
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'\0',ci->value.stringv.len);
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char* result = poolalloc(1+2+strlen(escaped));
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strcat(result,escaped);
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return result;
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}
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break;
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case NC_OPAQUE: {
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char* bstring;
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char* p;
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int bslen;
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bslen=(4*ci->value.opaquev.len);
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bstring = poolalloc(bslen+2+1);
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p = ci->value.opaquev.stringv;
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while(*p) {
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strlcat(bstring,"&#",bslen+3);
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strlcat(bstring,p,bslen+3);
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strlcat(bstring,";",bslen+3);
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p += 2;
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}
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return bstring;
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} break;
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default: PANIC1("ncstype: bad type code: %d",ci->nctype);
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}
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return pooldup(tmp); /*except for NC_STRING and NC_OPAQUE*/
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}
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void
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gencml_arraydata(Symbol* vsym, Bytebuffer* databuf)
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{
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Datasrc* src;
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Datalist* list;
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nc_type typecode = vsym->typ.basetype->typ.typecode;
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Comma comma = (isprimplus(typecode)?SUPPRESS:FIRST);
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if(vsym->data == NULL) return;
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if(typecode == NC_CHAR) {
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gen_chararray(vsym,NULL,databuf);
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return;
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}
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list = vsym->data;
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ASSERT(list->dimdata != NULL);
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src = datalist2src(list);
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if(typecode == NC_STRING) {
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gencml_stringarray(vsym,src,databuf);
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return;
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}
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gencml_arraydatar(vsym,src,list->dimdata,0,&comma,databuf);
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}
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static void
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gencml_arraydatar(Symbol* vsym,
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Datasrc* src,
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Odometer* odom,
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int index,
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Comma* commap,
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Bytebuffer* databuf)
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{
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int i;
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int rank = odom->rank;
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int lastdim = (index == (rank - 1)); /* last dimension*/
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int firstdim = (index == 0);
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int declsize = odom->dims[index].declsize;
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int isunlimited = (declsize == 0);
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Symbol* basetype = vsym->typ.basetype;
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nc_type typecode = basetype->typ.typecode;
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Datalist* fillsrc = vsym->var.special._Fillvalue;
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Constant* con;
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ASSERT(index >= 0 && index < rank);
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odom->dims[index].index = 0; /* reset*/
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if(isunlimited) {
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Constant* con;
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Comma savecomma = *commap;
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*commap = (isprimplus(typecode)?SUPPRESS:FIRST);
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if(!firstdim) {
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if(!issublist(src)) {
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semerror(srcline(src),"Unlimited data must be enclosed in {..}");
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return;
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}
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srcpush(src); /* enter the unlimited data */
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}
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bbCat(databuf,"<unlimited>\n");
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while((con=srcpeek(src))!=NULL) {
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if(lastdim) {
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switch (*commap) {
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case FIRST: break;
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case SECOND: bbCat(databuf,"\n"); break;
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case SUPPRESS: bbCat(databuf," "); break;
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}
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gencml_data(basetype,src,fillsrc,databuf);
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setcomma(*commap);
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} else {
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gencml_arraydatar(vsym,src,odom,index+1,commap,databuf);
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}
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odom->dims[index].index++;
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}
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odom->dims[index].datasize = odom->dims[index].index;
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bbCat(databuf,"</unlimited>");
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if(!firstdim) srcpop(src);
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*commap = savecomma;
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} else { /* !isunlimited*/
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for(i=0;i<declsize;i++) {
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con = srcpeek(src);
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if(lastdim) {
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switch (*commap) {
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case FIRST: break;
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case SECOND: bbCat(databuf,"\n"); break;
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case SUPPRESS: bbCat(databuf," "); break;
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}
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gencml_data(basetype,src,fillsrc,databuf);
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setcomma(*commap);
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} else { /* ! lastdim*/
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(void)gencml_arraydatar(vsym,src,odom,index+1,commap,databuf);
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}
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odom->dims[index].index++;
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}
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}
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}
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void
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xquotestring(Bytebuffer* databuf)
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{
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char* escaped = xescapify(bbContents(databuf),'"',bbLength(databuf));
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bbClear(databuf);
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bbCat(databuf,escaped);
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}
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/* NcML wants sequences of strings to be encoded
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by using some separator character. In this
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experimental prototype, we use � as the
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separator.
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This code is a modified version of gen_charattri code in genchar.c.
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*/
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static void
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gencml_stringarray(Symbol* sym, Datasrc* src, Bytebuffer* databuf)
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{
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Constant* con;
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char* xescaped;
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while((con=srcnext(src))) {
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bbCat(databuf,"�");
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switch (con->nctype) {
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case NC_STRING:
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xescaped = xescapify(con->value.stringv.stringv,'\0',
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con->value.stringv.len);
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bbCat(databuf,xescaped);
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break;
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case NC_FILLVALUE: {
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Datalist* fill = getfiller(sym);
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Datasrc* fillsrc = datalist2src(fill);
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gencml_stringarray(sym,fillsrc,databuf);
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} break;
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default:
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semerror(srcline(src),
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"Encountered non-string constant in attribute: %s",
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sym->name);
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return;
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}
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}
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}
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#endif /*ENABLE_CML*/
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