diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/H5T.c | 102 | ||||
| -rw-r--r-- | src/H5Tpublic.h | 7 |
2 files changed, 102 insertions, 7 deletions
@@ -27,6 +27,7 @@ static char RcsId[] = "@(#)$Revision$"; H5Tis_field_atomic -- Check if a field is atomic H5Tis_atomic/H5T_is_atomic -- Check if a datatype is atomic H5Tset_type -- Set the base type of a user-defined datatype + H5Tget_type -- Get the base type of a datatype H5Tadd_field -- Add a field to a compound datatype H5Tsize -- Determine the size of a datatype @@ -263,7 +264,9 @@ hbool_t H5T_is_atomic(h5_datatype_t *type) if(H5T_COMPOUND==type->dt.base) ret_value=BFALSE; +#ifdef LATER done: +#endif /* LATER */ if(ret_value == BFAIL) { /* Error condition cleanup */ @@ -372,6 +375,62 @@ done: /*-------------------------------------------------------------------------- NAME + H5Tget_type + PURPOSE + Get the base type of a datatype + USAGE + herr_t H5Tget_type(tid, base, len, arch) + hatom_t tid; IN: Datatype object to modify + hatom_t *base; IN: Base type of the datatype + uint8 *len; IN: Length of the object in bytes + uint8 *arch; IN: Architecture format type stored with + RETURNS + SUCCEED/FAIL + DESCRIPTION + This function gets the basic type of a user-defined datatype. Each + datatype is either an atomic type (i.e. has no further divisions of the + type) or is a compound type (like a C structure). If the datatype is + to a compound type, the 'len' argument is not used. +--------------------------------------------------------------------------*/ +herr_t H5Tget_type(hatom_t tid,hatom_t *base,uint8 *len,uint8 *arch) +{ + h5_datatype_t *dt; /* new data-type object to create */ + herr_t ret_value = SUCCEED; + + FUNC_ENTER(H5Tget_type, H5T_init_interface, FAIL); + + /* Clear errors and check args and all the boring stuff. */ + H5ECLEAR; + if(H5Aatom_group(tid)!=H5_DATATYPE) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL); + + /* Go get the object */ + if((dt=H5Aatom_object(tid))==NULL) + HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL); + if(dt->dt.base==0) + HGOTO_ERROR(H5E_FUNC, H5E_UNINITIALIZED, FAIL); + + /* Set the basic datatype information */ + if(base!=NULL) + *base=dt->dt.base; + if(len!=NULL) + *len=dt->dt.len; + if(arch!=NULL) + *arch=dt->dt.arch; + +done: + if(ret_value == FAIL) + { /* Error condition cleanup */ + + } /* end if */ + + /* Normal function cleanup */ + + FUNC_LEAVE(ret_value); +} /* end H5Tget_type() */ + +/*-------------------------------------------------------------------------- + NAME H5Tadd_field PURPOSE Add a field to a compound datatype @@ -515,14 +574,15 @@ uintn H5Tsize(hatom_t tid, uint8 len, uint8 arch, hbool_t mem_flag) } /* end if */ else { - if(tid==H5T_COMPOUND) + h5_datatype_t *dt; /* datatype pointer */ + + /* Go get the object */ + if((dt=H5Aatom_object(tid))==NULL) + HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL); + + if(dt->dt.base==H5T_COMPOUND) { intn i; /* local counting variable */ - h5_datatype_t *dt; /* datatype pointer */ - - /* Go get the object */ - if((dt=H5Aatom_object(tid))==NULL) - HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL); /* Check the base type of the datatype */ if(H5T_COMPOUND!=dt->dt.base) @@ -537,6 +597,36 @@ uintn H5Tsize(hatom_t tid, uint8 len, uint8 arch, hbool_t mem_flag) ret_value+=H5Tsize(dt->ci->flist[i].dt.base, dt->ci->flist[i].dt.len, dt->ci->flist[i].dt.arch,mem_flag)*H5Pnelem(dt->ci->flist[i].dim_id); } /* end if */ + else + { /* Simple, user-defined datatypes */ + switch(dt->dt.base) + { + case H5T_CHAR: + case H5T_INT: + case H5T_FLOAT: /* All three of thes types use the length as the number of bytes */ + ret_value=dt->dt.len; + break; + + case H5T_DATE: + ret_value=8; /* Number of characters for ISO 8601 format */ + break; + + case H5T_TIME: + ret_value=6; /* Number of characters for ISO 8601 format */ + break; + + case H5T_SPTR: + HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, UFAIL); + break; + + case H5T_PPTR: + HGOTO_ERROR(H5E_INTERNAL, H5E_UNSUPPORTED, UFAIL); + break; + + default: + HGOTO_ERROR(H5E_ARGS, H5E_BADRANGE, UFAIL); + } /* end switch */ + } /* end else */ } /* end else */ done: diff --git a/src/H5Tpublic.h b/src/H5Tpublic.h index 48fdfce..60686fa 100644 --- a/src/H5Tpublic.h +++ b/src/H5Tpublic.h @@ -23,7 +23,7 @@ #include <H5public.h> #include <H5Apublic.h> -/* Define atomic datatypes */ +/* Define atomic datatype bases */ #define H5T_CHAR MAKE_ATOM(H5_DATATYPE,0) #define H5T_INT MAKE_ATOM(H5_DATATYPE,1) #define H5T_FLOAT MAKE_ATOM(H5_DATATYPE,2) @@ -33,6 +33,10 @@ #define H5T_PPTR MAKE_ATOM(H5_DATATYPE,6) #define H5T_COMPOUND MAKE_ATOM(H5_DATATYPE,7) +/* Define atomic datatype architectures */ +#define H5T_BIGENDIAN 0 +#define H5T_LITTLEENDIAN 1 + typedef struct { hatom_t base; /* Basic datatype */ uint8 len; /* Length of base-type, in bytes */ @@ -48,6 +52,7 @@ uint32 H5Tget_num_fields(hatom_t tid); hbool_t H5Tis_field_atomic(hatom_t tid,uintn fidx); hbool_t H5Tis_atomic(hatom_t tid); herr_t H5Tset_type(hatom_t tid,hatom_t base,uint8 len,uint8 arch); +herr_t H5Tget_type(hatom_t tid,hatom_t *base,uint8 *len,uint8 *arch); uintn H5Tsize(hatom_t tid, uint8 len, uint8 arch, hbool_t mem_flag); herr_t H5Tadd_field (hatom_t tid, const char *name, hatom_t base, uint8 len, uint8 arch, hatom_t space); |