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Diffstat (limited to 'src/H5Gint.c')
| -rw-r--r-- | src/H5Gint.c | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/src/H5Gint.c b/src/H5Gint.c new file mode 100644 index 0000000..61598c2 --- /dev/null +++ b/src/H5Gint.c @@ -0,0 +1,200 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * Copyright by The HDF Group. * + * Copyright by the Board of Trustees of the University of Illinois. * + * All rights reserved. * + * * + * This file is part of HDF5. The full HDF5 copyright notice, including * + * terms governing use, modification, and redistribution, is contained in * + * the files COPYING and Copyright.html. COPYING can be found at the root * + * of the source code distribution tree; Copyright.html can be found at the * + * root level of an installed copy of the electronic HDF5 document set and * + * is linked from the top-level documents page. It can also be found at * + * http://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have * + * access to either file, you may request a copy from help@hdfgroup.org. * + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ + +/*------------------------------------------------------------------------- + * + * Created: H5Gint.c + * April 5 2007 + * Quincey Koziol <koziol@hdfgroup.org> + * + * Purpose: General use, "internal" routines for groups. + * + *------------------------------------------------------------------------- + */ + +/****************/ +/* Module Setup */ +/****************/ + +#define H5G_PACKAGE /*suppress error about including H5Gpkg */ + +/* Interface initialization */ +#define H5_INTERFACE_INIT_FUNC H5G_init_int_interface + + +/***********/ +/* Headers */ +/***********/ +#include "H5private.h" /* Generic Functions */ +#include "H5Eprivate.h" /* Error handling */ +#include "H5Gpkg.h" /* Groups */ +#include "H5MMprivate.h" /* Memory management */ + + +/****************/ +/* Local Macros */ +/****************/ + + +/******************/ +/* Local Typedefs */ +/******************/ + + +/********************/ +/* Package Typedefs */ +/********************/ + + +/********************/ +/* Local Prototypes */ +/********************/ + + +/*********************/ +/* Package Variables */ +/*********************/ + + +/*****************************/ +/* Library Private Variables */ +/*****************************/ + + +/*******************/ +/* Local Variables */ +/*******************/ + + + +/*-------------------------------------------------------------------------- +NAME + H5G_init_int_interface -- Initialize interface-specific information +USAGE + herr_t H5G_init_int_interface() +RETURNS + Non-negative on success/Negative on failure +DESCRIPTION + Initializes any interface-specific data or routines. (Just calls + H5G_init() currently). + +--------------------------------------------------------------------------*/ +static herr_t +H5G_init_int_interface(void) +{ + FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5G_init_int_interface) + + FUNC_LEAVE_NOAPI(H5G_init()) +} /* H5G_init_int_interface() */ + + +/*------------------------------------------------------------------------- + * Function: H5G_component + * + * Purpose: Returns the pointer to the first component of the + * specified name by skipping leading slashes. Returns + * the size in characters of the component through SIZE_P not + * counting leading slashes or the null terminator. + * + * Return: Success: Ptr into NAME. + * + * Failure: Ptr to the null terminator of NAME. + * + * Programmer: Robb Matzke + * matzke@llnl.gov + * Aug 11 1997 + * + *------------------------------------------------------------------------- + */ +const char * +H5G_component(const char *name, size_t *size_p) +{ + /* Use FUNC_ENTER_NOAPI_NOINIT_NOFUNC here to avoid performance issues */ + FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5G_component) + + assert(name); + + while ('/' == *name) + name++; + if (size_p) + *size_p = HDstrcspn(name, "/"); + + FUNC_LEAVE_NOAPI(name) +} /* end H5G_component() */ + + +/*------------------------------------------------------------------------- + * Function: H5G_normalize + * + * Purpose: Returns a pointer to a new string which has duplicate and + * trailing slashes removed from it. + * + * Return: Success: Ptr to normalized name. + * Failure: NULL + * + * Programmer: Quincey Koziol + * Saturday, August 16, 2003 + * + *------------------------------------------------------------------------- + */ +char * +H5G_normalize(const char *name) +{ + char *norm; /* Pointer to the normalized string */ + size_t s,d; /* Positions within the strings */ + unsigned last_slash; /* Flag to indicate last character was a slash */ + char *ret_value; /* Return value */ + + FUNC_ENTER_NOAPI_NOINIT(H5G_normalize) + + /* Sanity check */ + HDassert(name); + + /* Duplicate the name, to return */ + if(NULL == (norm = H5MM_strdup(name))) + HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed for normalized string") + + /* Walk through the characters, omitting duplicated '/'s */ + s = d = 0; + last_slash = 0; + while(name[s] != '\0') { + if(name[s] == '/') + if(last_slash) + ; + else { + norm[d++] = name[s]; + last_slash = 1; + } /* end else */ + else { + norm[d++] = name[s]; + last_slash = 0; + } /* end else */ + s++; + } /* end while */ + + /* Terminate normalized string */ + norm[d] = '\0'; + + /* Check for final '/' on normalized name & eliminate it */ + if(d > 1 && last_slash) + norm[d - 1] = '\0'; + + /* Set return value */ + ret_value = norm; + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5G_normalize() */ + |