diff options
Diffstat (limited to 'src/H5G.c')
| -rw-r--r-- | src/H5G.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/src/H5G.c b/src/H5G.c new file mode 100644 index 0000000..fafecac --- /dev/null +++ b/src/H5G.c @@ -0,0 +1,196 @@ +/*------------------------------------------------------------------------- + * Copyright (C) 1997 National Center for Supercomputing Applications. + * All rights reserved. + * + *------------------------------------------------------------------------- + * + * Created: H5G.c + * Jul 18 1997 + * Robb Matzke <robb@maya.nuance.com> + * + * Purpose: + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +#include <assert.h> + +#include "hdf5.h" + +/* Packages needed by this file... */ +#include "H5Gprivate.h" + +/* PRIVATE PROTOTYPES */ + + +/*------------------------------------------------------------------------- + * Function: H5G_decode_vec + * + * Purpose: Same as H5G_decode() except it does it for an array of + * symbol table entries. + * + * Return: Success: 0, with *pp pointing to the first byte + * after the last symbol. + * + * Failure: -1 + * + * Programmer: Robb Matzke + * robb@maya.nuance.com + * Jul 18 1997 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +herr_t +H5G_decode_vec (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent, intn n) +{ + intn i; + + for (i=0; i<n; i++) { + if (H5G_decode (f, pp, ent+i)<0) return -1; + } + return 0; +} + + +/*------------------------------------------------------------------------- + * Function: H5G_decode + * + * Purpose: Decodes a symbol table entry pointed to by `*pp'. + * + * Return: Success: 0 with *pp pointing to the first byte + * following the symbol table entry. + * + * Failure: -1 + * + * Programmer: Robb Matzke + * robb@maya.nuance.com + * Jul 18 1997 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +herr_t +H5G_decode (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent) +{ + uint8 *p_ret = *pp; + + H5F_decode_offset (f, *pp, ent->name_off); + H5F_decode_offset (f, *pp, ent->header); + UINT32DECODE (*pp, ent->type); + + switch (ent->type) { + case H5G_NOTHING_CACHED: + break; + + case H5G_CACHED_SDATA: + UINT32DECODE (*pp, ent->cache.sdata.nt); + UINT32DECODE (*pp, ent->cache.sdata.ndim); + UINT32DECODE (*pp, ent->cache.sdata.dim[0]); + UINT32DECODE (*pp, ent->cache.sdata.dim[1]); + UINT32DECODE (*pp, ent->cache.sdata.dim[2]); + UINT32DECODE (*pp, ent->cache.sdata.dim[3]); + break; + + case H5G_CACHED_SYMTAB: + UINT32DECODE (*pp, ent->cache.symtab.btree); + UINT32DECODE (*pp, ent->cache.symtab.heap); + break; + + default: + abort(); + } + + *pp = p_ret + 2*SIZEOF_OFFSET(f) + 4 + 24; + return 0; +} + + +/*------------------------------------------------------------------------- + * Function: H5G_encode_vec + * + * Purpose: Same as H5G_encode() except it does it for an array of + * symbol table entries. + * + * Return: Success: 0, with *pp pointing to the first byte + * after the last symbol. + * + * Failure: -1 + * + * Programmer: Robb Matzke + * robb@maya.nuance.com + * Jul 18 1997 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +herr_t +H5G_encode_vec (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent, intn n) +{ + intn i; + + for (i=0; i<n; i++) { + if (H5G_encode (f, pp, ent+i)<0) return -1; + } + return 0; +} + + +/*------------------------------------------------------------------------- + * Function: H5G_encode + * + * Purpose: Encodes the specified symbol table entry into the buffer + * pointed to by *pp. + * + * Return: Success: 0, with *pp pointing to the first byte + * after the symbol table entry. + * + * Failure: -1 + * + * Programmer: Robb Matzke + * robb@maya.nuance.com + * Jul 18 1997 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +herr_t +H5G_encode (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent) +{ + uint8 *p_ret = *pp; + + H5F_encode_offset (f, *pp, ent->name_off); + H5F_encode_offset (f, *pp, ent->header); + UINT32ENCODE (*pp, ent->type); + + switch (ent->type) { + case H5G_NOTHING_CACHED: + break; + + case H5G_CACHED_SDATA: + UINT32ENCODE (*pp, ent->cache.sdata.nt); + UINT32ENCODE (*pp, ent->cache.sdata.ndim); + UINT32ENCODE (*pp, ent->cache.sdata.dim[0]); + UINT32ENCODE (*pp, ent->cache.sdata.dim[1]); + UINT32ENCODE (*pp, ent->cache.sdata.dim[2]); + UINT32ENCODE (*pp, ent->cache.sdata.dim[3]); + break; + + case H5G_CACHED_SYMTAB: + UINT32ENCODE (*pp, ent->cache.symtab.btree); + UINT32ENCODE (*pp, ent->cache.symtab.heap); + break; + + default: + abort(); + } + + *pp = p_ret + 2*SIZEOF_OFFSET(f) + 4 + 24; + return 0; +} + |