mirror/netcdf-c
2
0
Fork 0
mirror of https://github.com/Unidata/netcdf-c.git synced 2024-11-21 03:13:42 +08:00
Code Issues Packages Projects Releases Wiki Activity
12d4f46668
netcdf-c/libdap2/nccommon.h
Dennis Heimbigner 12d4f46668
2011-09-18 20:57:51 +00:00

333 lines
12 KiB
C
Executable File
Raw Blame History

/*********************************************************************
* Copyright 1993, UCAR/Unidata
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
* $Header: /upc/share/CVS/netcdf-3/libnccommon/nccommon.h,v 1.40 2010/05/30 19:45:52 dmh Exp $
*********************************************************************/
#ifndef NCCOMMON_H
#define NCCOMMON_H 1
/* Mnemonics */
#ifndef BOOL
#define BOOL int
#endif
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif
#ifndef nullfree
#define nullfree(m) {if((m)!=NULL) {free(m);} else {}}
#endif
#define FILLCONSTRAINT TRUE
/* Use an extended version of the netCDF-4 type system */
#define NC_URL 50
#define NC_SET 51
/* Merge relevant translations of OC types */
#define NC_Dataset 52
#define NC_Sequence 53
#define NC_Structure 54
#define NC_Grid 55
#define NC_Dimension 56
#define NC_Primitive 57
#undef OCCOMPILEBYDEFAULT
#define DEFAULTSTRINGLENGTH 64
/* The sequence limit default is zero because
most servers do not implement projections
on sequences.
*/
#define DEFAULTSEQLIMIT 0
/**************************************************/
/* sigh, do the forwards */
struct NCDAPCOMMON;
struct NCprojection;
struct NCselection;
struct Getvara;
struct NCcachenode;
struct NCcache;
struct NCslice;
struct NCsegment;
struct OClist;
/**************************************************/
/*
Collect single bit flags that
affect the operation of the system.
*/
typedef unsigned int NCFLAGS;
# define SETFLAG(controls,flag) ((controls.flags) |= (flag))
# define CLRFLAG(controls,flag) ((controls.flags) &= ~(flag))
# define FLAGSET(controls,flag) (((controls.flags) & (flag)) != 0)
/* Base translations */
#define NCF_NC3 (0x01) /* DAP->netcdf-3 */
#define NCF_NC4 (0x02) /* DAP->netcdf-4 */
/* OR'd with the translation model */
#define NCF_NCDAP (0x04) /* libnc-dap mimic */
#define NCF_COORD (0x08) /* libnc-dap mimic + add coordinate variables */
#define NCF_VLEN (0x10) /* map sequences to vlen+struct */
/* Cache control flags */
#define NCF_CACHE (0x20) /* Cache enabled/disabled */
/* Misc control flags */
#define NCF_NOUNLIM (0x40) /* suppress bad sequences */
#define NCF_UPGRADE (0x80) /* Do proper type upgrades */
#define NCF_UNCONSTRAINABLE (0x100) /* Not a constrainable URL */
#define NCF_SHOWFETCH (0x200) /* show fetch calls */
/* Currently, defalt is on */
#define DFALTCACHEFLAG (0)
typedef struct NCCONTROLS {
NCFLAGS flags;
} NCCONTROLS;
struct NCTMODEL {
int translation;
char* model;
unsigned int flags;
};
/* Detail information about each cache item */
typedef struct NCcachenode {
int wholevariable; /* Is this cache entry constrained? */
int prefetch; /* is this the prefetch cache entry? */
size_t xdrsize;
DCEconstraint* constraint; /* as used to create this node */
NClist* vars; /* vars potentially covered by this cache node */
struct CDFnode* datadds;
OCobject ocroot;
OCdata content;
} NCcachenode;
/* All cache info */
typedef struct NCcache {
size_t cachelimit; /* max total size for all cached entries */
size_t cachesize; /* current size */
size_t cachecount; /* max # nodes in cache */
NCcachenode* prefetch;
NClist* nodes; /* cache nodes other than prefetch */
} NCcache;
/**************************************************/
/* The DAP packet info from OC */
typedef struct NCOC {
OCconnection conn;
char* urltext; /* as given to nc3d_open*/
OCURI* uri; /* as given to nc3d_open and parsed*/
OCobject ocdasroot;
DCEconstraint* dapconstraint; /* from url */
} NCOC;
typedef struct NCCDF {
struct CDFnode* ddsroot; /* constrained dds */
struct CDFnode* fullddsroot; /* unconstrained dds */
/* Collected sets of useful nodes (in ddsroot tree space) */
NClist* varnodes; /* nodes which can represent netcdf variables */
NClist* seqnodes; /* sequence nodes; */
NClist* gridnodes; /* grid nodes */
unsigned int defaultstringlength;
unsigned int defaultsequencelimit; /* global sequence limit;0=>no limit */
struct NCcache* cache;
size_t fetchlimit;
size_t smallsizelimit; /* what constitutes a small object? */
size_t totalestimatedsize;
const char* separator; /* constant; do not free */
/* unlimited dimension */
struct CDFnode* unlimited;
char* recorddim; /* From DODS_EXTRA */
/* libncdap4 only */
NClist* usertypes; /* nodes which will represent netcdf types */
} NCCDF;
/* Define a structure holding common info for NCDAP{3,4} */
typedef struct NCDAPCOMMON {
NC* controller; /* Parent instance of NCDAPCOMMON */
NCCDF cdf;
NCOC oc;
NCCONTROLS controls; /* Control flags and parameters */
} NCDAPCOMMON;
/**************************************************/
/* Create our own node tree to mimic ocnode trees*/
/* Each root CDFnode contains info about the whole tree */
typedef struct CDFtree {
OCobject ocroot;
OCdxd occlass;
NClist* nodes; /* all nodes in tree*/
struct CDFnode* root; /* cross link */
struct NCDAPCOMMON* owner;
/* Classification flags */
int regridded; /* Was this tree passed thru regrid3? */
} CDFtree;
/* Track the kinds of dimensions */
typedef int CDFdimflags;
#define CDFDIMNORMAL 0x0
#define CDFDIMSEQ 0x1
#define CDFDIMSTRING 0x2
#define CDFDIMCLONE 0x4
#define CDFDIMUNLIM 0x8
#define CDFDIMANON 0x10
#define CDFDIMRECORD 0x20
#define DIMFLAG(d,flag) ((d)->dim.dimflags & (flag))
#define DIMFLAGSET(d,flag) ((d)->dim.dimflags |= (flag))
#define DIMFLAGCLR(d,flag) ((d)->dim.dimflags &= ~(flag))
typedef struct CDFdim {
CDFdimflags dimflags;
struct CDFnode* basedim; /* for duplicate dimensions*/
struct CDFnode* array; /* parent array node */
size_t declsize; /* from constrained DDS*/
size_t declsize0; /* from unconstrained DDS*/
} CDFdim;
typedef struct CDFarray {
NClist* dimensions; /* inherited+originals */
NClist* dimensions0; /* Complete set of dimensions for this var */
struct CDFnode* stringdim;
/* Track sequence containment information */
struct CDFnode* seqdim;
/* note: unlike string dim; seqdim is also stored in dimensions vector */
struct CDFnode* sequence; /* containing usable sequence, if any */
struct CDFnode* basevar; /* for duplicate grid variables*/
} CDFarray;
typedef struct NCattribute {
char* name;
nc_type etype; /* dap type of the attribute */
NClist* values; /* strings come from the oc values */
} NCattribute;
/* Extend as additional DODS attribute values are defined */
typedef struct NCDODS {
size_t maxstrlen;
char* dimname;
} NCDODS;
typedef struct NCalignment {
unsigned long size; /* size of single instance of this type*/
unsigned long alignment; /* alignment of this field */
unsigned long offset; /* offset of this field in parent */
} NCalignment;
typedef struct NCtypesize {
BOOL aligned; /* have instance and field been defined? */
NCalignment instance; /* Alignment, etc for instance data */
NCalignment field; /* Alignment, etc WRT to parent */
} NCtypesize;
/* Closely mimics struct OCnode*/
typedef struct CDFnode {
nc_type nctype; /* redundant but convenient*/
nc_type etype; /* redundant but convenient*/
char* name; /* oc base name; redundant but convenient*/
OCobject dds; /* mirror node*/
struct CDFnode* container;
struct CDFnode* root;
CDFtree* tree; /* pointer so we can pass it around */
CDFdim dim;
CDFarray array;
NClist* subnodes; /*NClist<OCobject>*/
NClist* attributes; /*NClist<NCattribute*>*/
NCDODS dodsspecial; /*these are the special attributes like
maxStrlen */
char* ncfullname; /* with parent name prefixing*/
char* ncbasename; /* without parent name prefixing, but legitimate */
nc_type externaltype; /* the type as represented to nc_inq*/
int ncid; /* relevant NC id for this object*/
unsigned long maxstringlength;
unsigned long sequencelimit; /* 0=>unlimited */
BOOL usesequence; /* If this sequence is usable */
BOOL elided; /* 1 => node does not partipate in naming*/
struct CDFnode* basenode; /* map from constrained tree to unconstrained */
BOOL visible; /* 1 => node is present in constrained tree;
independent of elided flag */
BOOL zerodim; /* 1 => node has a zero dimension */
/* These two flags track the effects on grids of constraints */
BOOL virtual; /* Is this node added ? */
BOOL projected; /* Is this a node referenced by projection */
struct CDFnode* attachment; /* DDS<->DATADDS cross link*/
struct CDFnode* template; /* temporary field for regridding */
/* Fields for use by libncdap4 */
NCtypesize typesize;
int typeid; /* when treating field as type */
int basetypeid; /* when typeid is vlen */
char* typename;
char* vlenname; /* for sequence types */
int singleton; /* for singleton sequences */
unsigned long estimatedsize; /* > 0 Only for var nodes */
} CDFnode;
/**************************************************/
/* Give PSEUDOFILE a value */
#define PSEUDOFILE "/tmp/pseudofileXXXXXX"
/**************************************************/
/* Shared procedures */
/* From ncdap3.c*/
extern NCerror cleanNCDAPCOMMON(struct NCDAPCOMMON*);
extern NCerror fetchtemplatemetadata3(NCDAPCOMMON*);
/* From error.c*/
extern NCerror ocerrtoncerr(OCerror);
/* From: common34.c */
extern NCerror fixgrid34(struct NCDAPCOMMON* drno, CDFnode* grid);
extern NCerror computecdfinfo34(struct NCDAPCOMMON*, NClist*);
extern char* cdfname34(char* basename);
extern NCerror augmentddstree34(struct NCDAPCOMMON*, NClist*);
extern NCerror clonecdfdims34(struct NCDAPCOMMON*);
extern NCerror computecdfdimnames34(struct NCDAPCOMMON*);
extern NCerror buildcdftree34(struct NCDAPCOMMON*, OCobject, OCdxd, CDFnode**);
extern CDFnode* makecdfnode34(struct NCDAPCOMMON*, char* nm, OCtype,
/*optional*/ OCobject ocnode, CDFnode* container);
extern void freecdfroot34(CDFnode*);
extern NCerror findnodedds34(struct NCDAPCOMMON* drno, CDFnode* ddssrc);
extern NCerror makegetvar34(struct NCDAPCOMMON*, struct CDFnode*, void*, nc_type, struct Getvara**);
extern NCerror applyclientparams34(struct NCDAPCOMMON* drno);
extern NCerror attach34(CDFnode* xroot, CDFnode* ddstarget);
extern NCerror attachall34(CDFnode* xroot, CDFnode* ddsroot);
extern NCerror attachsubset34(CDFnode*, CDFnode*);
extern void unattach34(CDFnode*);
extern int nodematch34(CDFnode* node1, CDFnode* node2);
extern int simplenodematch34(CDFnode* node1, CDFnode* node2);
extern CDFnode* findxnode34(CDFnode* target, CDFnode* xroot);
extern int constrainable34(OCURI*);
extern char* makeconstraintstring34(DCEconstraint*);
extern size_t estimatedataddssize34(CDFnode* datadds);
extern void restrictprojection34(NClist*, NClist*);
/* From cache.c */
extern int iscached(NCDAPCOMMON*, CDFnode* target, NCcachenode** cachenodep);
extern NCerror prefetchdata3(NCDAPCOMMON*);
extern NCerror buildcachenode34(NCDAPCOMMON*,
DCEconstraint* constraint,
NClist* varlist,
NCcachenode** cachep,
int isprefetch);
extern NCcachenode* createnccachenode(void);
extern void freenccachenode(NCDAPCOMMON*, NCcachenode* node);
extern NCcache* createnccache(void);
extern void freenccache(NCDAPCOMMON*, NCcache* cache);
/* Add an extra function whose sole purpose is to allow
configure(.ac) to test for the presence of thiscode.
*/
extern int nc__opendap(void);
#endif /*NCCOMMON_H*/
Reference in New Issue View Git Blame Copy Permalink