mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-12-03 08:01:25 +08:00
358 lines
11 KiB
C
Executable File
358 lines
11 KiB
C
Executable File
/*********************************************************************
|
|
* Copyright 2009, UCAR/Unidata
|
|
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
|
|
*********************************************************************/
|
|
/* $Id: bindata.c,v 1.3 2010/05/24 19:59:56 dmh Exp $ */
|
|
/* $Header: /upc/share/CVS/netcdf-3/ncgen/bindata.c,v 1.3 2010/05/24 19:59:56 dmh Exp $ */
|
|
|
|
#include "includes.h"
|
|
#include "nciter.h"
|
|
|
|
#ifdef ENABLE_BINARY
|
|
|
|
/**************************************************/
|
|
/* Code for generating binary data lists*/
|
|
/**************************************************/
|
|
/* For datalist constant rules: see the rules on the man page */
|
|
|
|
/* Forward */
|
|
static void bindata_primdata(Symbol*,Datasrc*,Bytebuffer*,Datalist*);
|
|
static void bindata_fieldarray(Symbol*, Datasrc*, Odometer*, Bytebuffer*, Datalist* fillsrc);
|
|
static void bindata_fieldarrayr(Symbol*,Datasrc*,Odometer*,int,Bytebuffer*,Datalist*);
|
|
|
|
/* Specialty wrappers for attributes and variables */
|
|
void
|
|
bindata_attrdata(Symbol* asym, Bytebuffer* memory)
|
|
{
|
|
Datasrc* src;
|
|
int typecode = asym->typ.basetype->typ.typecode;
|
|
|
|
if(asym->data == NULL) return;
|
|
if(typecode == NC_CHAR) {
|
|
gen_charattr(asym,memory);
|
|
} else {
|
|
src = datalist2src(asym->data);
|
|
while(srcmore(src)) {
|
|
bindata_basetype(asym->typ.basetype,src,memory,NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
bindata_array(Symbol* vsym,
|
|
Bytebuffer* memory,
|
|
Datasrc* src,
|
|
Odometer* odom,
|
|
int index,
|
|
Datalist* fillsrc)
|
|
{
|
|
int i;
|
|
int rank = odom->rank;
|
|
int firstdim = (index == 0); /* first dimension*/
|
|
int lastdim = (index == (rank - 1)); /* last dimension*/
|
|
size_t count;
|
|
Symbol* basetype = vsym->typ.basetype;
|
|
int isunlimited = (odom->declsize[index] == 0);
|
|
int pushed = 0;
|
|
|
|
ASSERT(index >= 0 && index < rank);
|
|
|
|
/* Assume that src is already at the index of
|
|
everything read up to now */
|
|
|
|
count = odom->count[index];
|
|
|
|
/* Unpack the nested unlimited (unless first dimension)*/
|
|
if(!firstdim && isunlimited && issublist(src)) {
|
|
srcpush(src);
|
|
pushed = 1;
|
|
}
|
|
|
|
if(lastdim) {
|
|
for(i=0;i<count;i++) {
|
|
bindata_basetype(basetype,src,memory,fillsrc);
|
|
}
|
|
|
|
} else {
|
|
/* walk count elements and generate recursively */
|
|
for(i=0;i<count;i++) {
|
|
bindata_array(vsym,memory,src,odom,index+1,fillsrc);
|
|
}
|
|
}
|
|
|
|
if(isunlimited && pushed) srcpop(src);
|
|
|
|
return;
|
|
}
|
|
|
|
/* Generate an instance of the basetype using datasrc */
|
|
void
|
|
bindata_basetype(Symbol* tsym, Datasrc* datasrc, Bytebuffer* memory, Datalist* fillsrc)
|
|
{
|
|
int usecmpd;
|
|
|
|
switch (tsym->subclass) {
|
|
|
|
case NC_ENUM:
|
|
case NC_OPAQUE:
|
|
case NC_PRIM:
|
|
if(issublist(datasrc)) {
|
|
semerror(srcline(datasrc),"Expected primitive found {..}");
|
|
}
|
|
bindata_primdata(tsym,datasrc,memory,fillsrc);
|
|
break;
|
|
|
|
case NC_COMPOUND: {
|
|
int i;
|
|
Constant* con;
|
|
|
|
if(!isfillvalue(datasrc) && !issublist(datasrc)) {/* fail on no compound*/
|
|
semerror(srcline(datasrc),"Compound data must be enclosed in {..}");
|
|
}
|
|
con = srcnext(datasrc);
|
|
if(con == NULL || con->nctype == NC_FILLVALUE) {
|
|
Datalist* filler = getfiller(tsym,fillsrc);
|
|
ASSERT(filler->length == 1);
|
|
con = &filler->data[0];
|
|
if(con->nctype != NC_COMPOUND) {
|
|
semerror(con->lineno,"Compound data fill value is not enclosed in {..}");
|
|
}
|
|
}
|
|
srcpushlist(datasrc,con->value.compoundv); /* enter the sublist*/
|
|
for(i=0;i<listlength(tsym->subnodes);i++) {
|
|
Symbol* field = (Symbol*)listget(tsym->subnodes,i);
|
|
bindata_basetype(field,datasrc,memory,NULL);
|
|
}
|
|
srcpop(datasrc);
|
|
} break;
|
|
|
|
case NC_VLEN: {
|
|
Constant* con;
|
|
nc_vlen_t ptr;
|
|
if(!isfillvalue(datasrc) && !issublist(datasrc)) {/* fail on no compound*/
|
|
semerror(srcline(datasrc),"Vlen data must be enclosed in {..}");
|
|
}
|
|
con = srcnext(datasrc);
|
|
if(con == NULL || con->nctype == NC_FILLVALUE) {
|
|
Datalist* filler = getfiller(tsym,fillsrc);
|
|
ASSERT(filler->length == 1);
|
|
con = &filler->data[0];
|
|
if(con->nctype != NC_COMPOUND) {
|
|
semerror(con->lineno,"Vlen data fill value is not enclosed in {..}");
|
|
}
|
|
}
|
|
/* generate the nc_vlen_t instance*/
|
|
ptr.p = vlendata[con->value.compoundv->vlen.uid].data;
|
|
ptr.len = vlendata[con->value.compoundv->vlen.uid].count;
|
|
bbAppendn(memory,(char*)&ptr,sizeof(ptr));
|
|
} break;
|
|
|
|
case NC_FIELD:
|
|
/* enclose in braces if and only if field is an array */
|
|
usecmpd = (issublist(datasrc) && tsym->typ.dimset.ndims > 0);
|
|
if(usecmpd) srcpush(datasrc);
|
|
if(tsym->typ.dimset.ndims > 0) {
|
|
Odometer* fullodom = newodometer(&tsym->typ.dimset,NULL,NULL);
|
|
bindata_fieldarray(tsym->typ.basetype,datasrc,fullodom,memory,fillsrc);
|
|
} else {
|
|
bindata_basetype(tsym->typ.basetype,datasrc,memory,NULL);
|
|
}
|
|
if(usecmpd) srcpop(datasrc);
|
|
break;
|
|
|
|
default: PANIC1("bindata_basetype: unexpected subclass %d",tsym->subclass);
|
|
}
|
|
}
|
|
|
|
/* Used only for structure field arrays*/
|
|
static void
|
|
bindata_fieldarrayr(Symbol* basetype, Datasrc* src, Odometer* odom, int index,
|
|
Bytebuffer* memory, Datalist* fillsrc)
|
|
{
|
|
int i;
|
|
int rank = odom->rank;
|
|
unsigned int size = odom->declsize[index];
|
|
int lastdim = (index == (rank - 1)); /* last dimension*/
|
|
|
|
ASSERT(size != 0);
|
|
for(i=0;i<size;i++) {
|
|
if(lastdim) {
|
|
bindata_basetype(basetype,src,memory,fillsrc);
|
|
} else { /* !lastdim*/
|
|
bindata_fieldarrayr(basetype,src,odom,index+1,memory,fillsrc);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
bindata_fieldarray(Symbol* basetype, Datasrc* src, Odometer* odom,
|
|
Bytebuffer* memory, Datalist* fillsrc)
|
|
{
|
|
if(basetype->typ.typecode == NC_CHAR) {
|
|
/* Collect the char field in a separate buffer */
|
|
Bytebuffer* fieldbuf = bbNew();
|
|
gen_charfield(src,odom,fieldbuf);
|
|
bbAppendn(memory,bbContents(fieldbuf),bbLength(fieldbuf));
|
|
bbFree(fieldbuf);
|
|
} else {
|
|
bindata_fieldarrayr(basetype,src,odom,0,memory,fillsrc);
|
|
}
|
|
}
|
|
|
|
static void
|
|
bindata_primdata(Symbol* basetype, Datasrc* src, Bytebuffer* memory, Datalist* fillsrc)
|
|
{
|
|
Constant* prim;
|
|
Constant target;
|
|
|
|
prim = srcnext(src);
|
|
if(prim == NULL) prim = &fillconstant;
|
|
|
|
ASSERT(prim->nctype != NC_COMPOUND);
|
|
|
|
if(prim->nctype == NC_FILLVALUE) {
|
|
Datalist* filler = getfiller(basetype,fillsrc);
|
|
ASSERT(filler->length == 1);
|
|
srcpushlist(src,filler);
|
|
bindata_primdata(basetype,src,memory,NULL);
|
|
srcpop(src);
|
|
goto done;
|
|
}
|
|
|
|
target.nctype = basetype->typ.typecode;
|
|
|
|
if(target.nctype != NC_ECONST) {
|
|
convert1(prim,&target);
|
|
alignbuffer(&target,memory);
|
|
}
|
|
|
|
switch (target.nctype) {
|
|
case NC_ECONST:
|
|
if(basetype->subclass != NC_ENUM) {
|
|
semerror(prim->lineno,"Conversion to enum not supported (yet)");
|
|
} else {
|
|
Datalist* econ = builddatalist(1);
|
|
srcpushlist(src,econ);
|
|
dlappend(econ,&prim->value.enumv->typ.econst);
|
|
bindata_primdata(prim->value.enumv->typ.basetype,src,memory,fillsrc);
|
|
srcpop(src);
|
|
}
|
|
break;
|
|
case NC_OPAQUE: {
|
|
unsigned char* bytes;
|
|
size_t len;
|
|
setprimlength(&target,basetype->typ.size*2);
|
|
bytes=makebytestring(target.value.opaquev.stringv,&len);
|
|
bbAppendn(memory,(void*)bytes,len);
|
|
} break;
|
|
|
|
case NC_CHAR:
|
|
bbAppendn(memory,&target.value.charv,sizeof(target.value.charv));
|
|
break;
|
|
case NC_BYTE:
|
|
bbAppendn(memory,(void*)&target.value.int8v,sizeof(target.value.int8v));
|
|
break;
|
|
case NC_SHORT:
|
|
bbAppendn(memory,(void*)&target.value.int16v,sizeof(target.value.int16v));
|
|
break;
|
|
case NC_INT:
|
|
bbAppendn(memory,(void*)&target.value.int32v,sizeof(target.value.int32v));
|
|
break;
|
|
case NC_FLOAT:
|
|
bbAppendn(memory,(void*)&target.value.floatv,sizeof(target.value.floatv));
|
|
break;
|
|
case NC_DOUBLE:
|
|
bbAppendn(memory,(void*)&target.value.doublev,sizeof(target.value.doublev));
|
|
break;
|
|
case NC_UBYTE:
|
|
bbAppendn(memory,(void*)&target.value.uint8v,sizeof(target.value.uint8v));
|
|
break;
|
|
case NC_USHORT:
|
|
bbAppendn(memory,(void*)&target.value.uint16v,sizeof(target.value.uint16v));
|
|
break;
|
|
case NC_UINT:
|
|
bbAppendn(memory,(void*)&target.value.uint32v,sizeof(target.value.uint32v));
|
|
break;
|
|
case NC_INT64: {
|
|
union SI64 { char ch[8]; long long i64;} si64;
|
|
si64.i64 = target.value.int64v;
|
|
bbAppendn(memory,(void*)si64.ch,sizeof(si64.ch));
|
|
} break;
|
|
case NC_UINT64: {
|
|
union SU64 { char ch[8]; unsigned long long i64;} su64;
|
|
su64.i64 = target.value.uint64v;
|
|
bbAppendn(memory,(void*)su64.ch,sizeof(su64.ch));
|
|
} break;
|
|
case NC_STRING: {
|
|
if(usingclassic) {
|
|
bbAppendn(memory,target.value.stringv.stringv,target.value.stringv.len);
|
|
} else if(target.nctype == NC_CHAR) {
|
|
bbAppendn(memory,target.value.stringv.stringv,target.value.stringv.len);
|
|
} else {
|
|
char* ptr;
|
|
int len = (size_t)target.value.stringv.len;
|
|
ptr = poolalloc(len+1); /* CAREFUL: this has short lifetime*/
|
|
memcpy(ptr,target.value.stringv.stringv,len);
|
|
ptr[len] = '\0';
|
|
bbAppendn(memory,(void*)&ptr,sizeof(ptr));
|
|
}
|
|
} break;
|
|
|
|
default: PANIC1("bindata_primdata: unexpected type: %d",target.nctype);
|
|
}
|
|
done:
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
This walk of the data lists collects
|
|
vlen sublists and constructs separate C constants
|
|
for each of them. The "id" of each list is then
|
|
recorded in the containing datalist.
|
|
*/
|
|
void
|
|
bindata_vlenconstants(List* vlenconstants)
|
|
{
|
|
int i,nvlen;
|
|
Datasrc* vlensrc;
|
|
Bytebuffer* memory = bbNew();
|
|
|
|
/* Prepare a place to store vlen constants */
|
|
nvlen = listlength(vlenconstants);
|
|
if(nvlen == 0) return;
|
|
vlendata = (struct Vlendata*)emalloc(sizeof(struct Vlendata)*nvlen+1);
|
|
memset((void*)vlendata,0,sizeof(struct Vlendata)*nvlen+1);
|
|
|
|
for(i=0;i<nvlen;i++) {
|
|
Constant* cmpd = (Constant*)listget(vlenconstants,i);
|
|
int chartype;
|
|
Symbol* tsym = cmpd->value.compoundv->vlen.schema;
|
|
unsigned long uid = cmpd->value.compoundv->vlen.uid;
|
|
unsigned long count;
|
|
ASSERT(tsym != NULL);
|
|
chartype = (tsym->typ.basetype->typ.typecode == NC_CHAR);
|
|
|
|
vlensrc = datalist2src(cmpd->value.compoundv);
|
|
|
|
bbClear(memory);
|
|
count = 0;
|
|
if(chartype) {
|
|
/* Collect the char vlen in a separate buffer */
|
|
gen_charvlen(vlensrc,memory);
|
|
count = bbLength(memory);
|
|
} else {
|
|
while(srcmore(vlensrc)) {
|
|
bindata_basetype(tsym->typ.basetype,vlensrc,memory,NULL);
|
|
count++;
|
|
}
|
|
ASSERT(count == cmpd->value.compoundv->vlen.count);
|
|
}
|
|
vlendata[uid].data = bbDup(memory);
|
|
vlendata[uid].count = count;
|
|
}
|
|
bbFree(memory);
|
|
}
|
|
|
|
#endif /*ENABLE_BINARY*/
|