mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-11-27 07:30:33 +08:00
926 lines
22 KiB
C
926 lines
22 KiB
C
/*********************************************************************
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* Copyright 2018, University Corporation for Atmospheric Research
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* See netcdf/README file for copying and redistribution conditions.
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* $Id$
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*********************************************************************/
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#include "config.h"
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <netcdf.h>
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#include <assert.h>
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#include <ctype.h>
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#include "utils.h"
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#ifndef isascii
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EXTERNL int isascii(int c);
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#endif
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/*
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* Print error message to stderr and exit
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*/
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void
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error(const char *fmt, ...)
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{
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va_list args ;
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(void) fprintf(stderr,"%s: ", progname);
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va_start(args, fmt) ;
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(void) vfprintf(stderr,fmt,args) ;
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va_end(args) ;
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(void) fprintf(stderr, "\n") ;
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(void) fflush(stderr); /* to ensure log files are current */
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exit(EXIT_FAILURE);
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}
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void *
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emalloc ( /* check return from malloc */
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size_t size)
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{
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void *p;
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p = (void *) malloc (size==0 ? 1 : size); /* malloc(0) not portable */
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if (p == 0) {
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error ("out of memory\n");
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}
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return p;
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}
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void *
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ecalloc ( /* check return from calloc */
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size_t size)
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{
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void *p;
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p = (void *) calloc (1,(size==0 ? 1 : size)); /* calloc(0) not portable */
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if (p == 0) {
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error ("out of memory\n");
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}
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return p;
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}
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void *
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erealloc (void* p0, /* check return from realloc */
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size_t size)
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{
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void *p;
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if(p0 == NULL)
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return emalloc(size);
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if(size == 0)
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error("realloc with zero size");
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p = (void *) realloc (p0,size); /* realloc(0) not portable */
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if (p == 0) {
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error ("out of memory\n");
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}
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return p;
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}
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void
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check(int err, const char* file, const int line)
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{
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fprintf(stderr,"%s\n",nc_strerror(err));
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fprintf(stderr,"Location: file %s; line %d\n", file,line);
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fflush(stderr); fflush(stdout);
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exit(1);
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}
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/*
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* Returns malloced name with chars special to CDL escaped.
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* Caller should free result when done with it.
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*/
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char*
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escaped_name(const char* cp) {
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char *ret; /* string returned */
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char *sp;
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assert(cp != NULL);
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/* For some reason, and on some machines (e.g. tweety)
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utf8 characters such as \343 are considered control character. */
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/* if(*cp && (isspace(*cp) | iscntrl(*cp)))*/
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if((*cp >= 0x01 && *cp <= 0x20) || (*cp == 0x7f))
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{
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error("name begins with space or control-character: %c",*cp);
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}
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ret = emalloc(4*strlen(cp) + 1); /* max if every char escaped */
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sp = ret;
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*sp = 0; /* empty name OK */
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/* Special case: leading number allowed, but we must escape it for CDL */
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if((*cp >= '0' && *cp <= '9'))
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{
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*sp++ = '\\';
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}
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for (; *cp; cp++) {
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if (isascii((int)*cp)) {
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if(iscntrl((int)*cp)) { /* render control chars as two hex digits, \%xx */
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snprintf(sp, 4+1,"\\%%%.2x", *cp);
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sp += 4;
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} else {
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switch (*cp) {
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case ' ':
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case '!':
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case '"':
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case '#':
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case '$':
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case '&':
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case '\'':
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case '(':
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case ')':
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case '*':
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case ',':
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case ':':
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case ';':
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case '<':
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case '=':
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case '>':
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case '?':
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case '[':
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case ']':
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case '\\':
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case '^':
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case '`':
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case '{':
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case '|':
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case '}':
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case '~':
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*sp++ = '\\';
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*sp++ = *cp;
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break;
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default: /* includes '/' */
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*sp++ = *cp;
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break;
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}
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}
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} else { /* not ascii, assume just UTF-8 byte */
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*sp++ = *cp;
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}
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}
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*sp = 0;
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return ret;
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}
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/*
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* Print name with escapes for special characters
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*/
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void
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print_name(const char* name) {
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char *ename = escaped_name(name);
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fputs(ename, stdout);
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free(ename);
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}
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/* Convert a full path name to a group to the specific groupid. */
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int
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nc_inq_grpid2(int ncid, const char *grpname0, int *grpidp)
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{
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int ret = NC_NOERR;
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char* grpname = NULL;
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#ifdef USE_NETCDF4
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char *sp = NULL;
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#endif
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grpname = strdup(grpname0);
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if(grpname == NULL) {ret = NC_ENOMEM; goto done;}
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#ifdef USE_NETCDF4
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/* If '/' doesn't occur in name, just return id found by nc_inq_grpid() */
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sp = strrchr(grpname, '/');
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if(!sp) { /* No '/' in grpname, so return nc_inq_grpid() result */
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ret = nc_inq_grp_ncid(ncid, grpname, grpidp);
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goto done;
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}
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{ /* Parse group name out and get grpid using that */
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char* p, *q;
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int next;
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p = grpname;
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if(grpname[0] == '/') {
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/* get ncid of the root group */
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ncid = getrootid(ncid);
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p++; /* skip leading '/' */
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}
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/* Walk down looking for each group in path in turn */
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while(*p) {
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q = strchr(p,'/');
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if(q == NULL) q = p+strlen(p); /* point to trailing nul */
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else *q++ = '\0';
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/* Lookup this path segment wrt to current group */
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if((ret=nc_inq_ncid(ncid,p,&next))) goto done;
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/* move to next segment */
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p = q;
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ncid = next;
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}
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if(grpidp) *grpidp = ncid;
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}
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#else /* !USE_NETCDF4 */
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/* Just return root */
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if(grpidp) *grpidp = ncid;
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#endif /* USE_NETCDF4 */
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done:
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if(grpname) free(grpname);
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return ret;
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}
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/* Convert a full path name to a varid to the specific varid + grpid */
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int
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nc_inq_varid2(int ncid, const char *path0, int* varidp, int* grpidp)
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{
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int ret = NC_NOERR;
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int grpid, varid;
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char *v, *g, *prefix;
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/* If '/' doesn't occur in name, just return id found by
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* nc_inq_grpid()
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*/
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char* path = NULL;
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path = strdup(path0);
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if(path == NULL) {ret = NC_ENOMEM; goto done;}
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/* Find the rightmost '/' and tag the start of the path */
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g = strrchr(path,'/');
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if(g == NULL) {
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v = path;
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prefix = "/"; /* make sure not free'd */
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} else {
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*g++ = '\0'; /* separate out the prefix */
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prefix = path;
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v = g;
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}
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/* convert the group prefix to a group id */
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if((ret=nc_inq_grpid2(ncid,prefix,&grpid)))
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goto done;
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/* Lookup the var in the terminal group */
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if((ret=nc_inq_varid(grpid,v,&varid)))
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goto done;
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if(grpidp)
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*grpidp = grpid;
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if(varidp)
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*varidp = varid;
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done:
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if(path) free(path);
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return ret;
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}
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/* Missing functionality that should be in nc_inq_dimid(), to get
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* dimid from a full dimension path name that may include group
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* names */
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int
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nc_inq_dimid2(int ncid, const char *dimname, int *dimidp) {
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int ret = NC_NOERR;
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/* If '/' doesn't occur in dimname, just return id found by
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* nc_inq_dimid() */
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char *sp = strrchr(dimname, '/');
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if(!sp) { /* No '/' in dimname, so return nc_inq_dimid() result */
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ret = nc_inq_dimid(ncid, dimname, dimidp);
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}
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#ifdef USE_NETCDF4
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else { /* Parse group name out and get dimid using that */
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size_t grp_namelen = sp - dimname;
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char *grpname = emalloc(grp_namelen+1);
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int grpid;
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strncpy(grpname, dimname, grp_namelen+1);
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grpname[grp_namelen] = '\0';
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ret = nc_inq_grp_full_ncid(ncid, grpname, &grpid);
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if(ret == NC_NOERR) {
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ret = nc_inq_dimid(grpid, dimname, dimidp);
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}
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free(grpname);
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}
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#endif /* USE_NETCDF4 */
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return ret;
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}
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/*
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* return 1 if varid identifies a record variable
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* else return 0
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*/
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int
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isrecvar(int ncid, int varid)
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{
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int ndims;
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int is_recvar = 0;
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int *dimids;
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NC_CHECK( nc_inq_varndims(ncid, varid, &ndims) );
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#ifdef USE_NETCDF4
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if (ndims > 0) {
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int nunlimdims;
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int *recdimids;
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int dim, recdim;
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dimids = (int *) emalloc((ndims + 1) * sizeof(int));
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NC_CHECK( nc_inq_vardimid(ncid, varid, dimids) );
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NC_CHECK( nc_inq_unlimdims(ncid, &nunlimdims, NULL) );
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recdimids = (int *) emalloc((nunlimdims + 1) * sizeof(int));
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NC_CHECK( nc_inq_unlimdims(ncid, NULL, recdimids) );
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for (dim = 0; dim < ndims && is_recvar == 0; dim++) {
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for(recdim = 0; recdim < nunlimdims; recdim++) {
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if(dimids[dim] == recdimids[recdim]) {
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is_recvar = 1;
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break;
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}
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}
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}
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free(dimids);
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free(recdimids);
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}
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#else
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if (ndims > 0) {
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int recdimid;
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dimids = (int *) emalloc((ndims + 1) * sizeof(int));
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NC_CHECK( nc_inq_vardimid(ncid, varid, dimids) );
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NC_CHECK( nc_inq_unlimdim(ncid, &recdimid) );
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if(dimids[0] == recdimid)
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is_recvar = 1;
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free(dimids);
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}
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#endif /* USE_NETCDF4 */
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return is_recvar;
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}
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static idnode_t*
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newidnode(void) {
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idnode_t *newvp = (idnode_t*) emalloc(sizeof(idnode_t));
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return newvp;
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}
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/*
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* Get a new, empty variable list.
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*/
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idnode_t*
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newidlist(void) {
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idnode_t *vp = newidnode();
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vp -> next = 0;
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vp -> id = -1; /* bad id */
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return vp;
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}
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void
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idadd(idnode_t* vlist, int varid) {
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idnode_t *newvp = newidnode();
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newvp -> next = vlist -> next;
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newvp -> id = varid;
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vlist -> next = newvp;
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}
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/*
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* return true if id is member of list that idlist points to.
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*/
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bool_t
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idmember(const idnode_t* idlist, int id)
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{
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idnode_t *vp = idlist -> next;
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for (; vp ; vp = vp->next)
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if (vp->id == id)
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return true;
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return false;
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}
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/*
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* Release a variable list.
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*/
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void
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freeidlist(idnode_t *idlist)
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{
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while(idlist) {
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idnode_t *vp = idlist->next;
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free(idlist);
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idlist = vp;
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}
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}
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/*
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* Return true if group identified by grpid is member of grpids, a list of groups.
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* nlgrps is number of groups in the list.
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*/
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bool_t
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group_wanted(int grpid, int nlgrps, const idnode_t* grpids)
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{
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/* If -g not specified, all groups are wanted */
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if(nlgrps == 0) return true;
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/* if -g specified, look for match in group id list */
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return idmember(grpids, grpid);
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}
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/* Determine whether a group named formatting_specs.lgrps[igrp] exists
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* in a netCDF file or group with id ncid. If so, return the count of
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* how many matching groups were found, else return a count of 0. If
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* the name begins with "/", it is interpreted as an absolute group
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* name, in which case only 0 or 1 is returned. Otherwise, interpret
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* it as a relative name, and the total number of occurrences within
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* the file/group identified by ncid is returned.
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*
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* Also has side effect of updating the ngrpids and the associate
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* grpids array that represent the group list specified by the -g
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* option. TODO: put this in its own function instead.
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*/
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static size_t
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nc_inq_grpname_count(int ncid, int igrp, char **lgrps, idnode_t *grpids) {
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size_t count = 0;
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#ifdef USE_NETCDF4
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int numgrps;
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int *ncids;
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int g;
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int grpid;
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int status;
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#endif
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char *grpname = lgrps[igrp];
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/* permit empty string to also designate root group */
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if(grpname[0] == '\0' || NCSTREQ(grpname,"/")) {
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count = 1;
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idadd(grpids, ncid);
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return count;
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}
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#ifdef USE_NETCDF4
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/* Handle absolute group names */
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if(grpname[0] == '/') {
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int grpid;
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status = nc_inq_grp_full_ncid(ncid, grpname, &grpid);
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if(status == NC_NOERR) {
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count = 1;
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idadd(grpids, grpid);
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} else if(status == NC_ENOGRP) {
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count = 0;
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} else {
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error("when looking up group %s: %s ", grpname, nc_strerror(status));
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}
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return count;
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}
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|
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/* look in this group */
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status = nc_inq_grp_ncid(ncid, grpname, &grpid);
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if (status == NC_NOERR) {
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count++;
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idadd(grpids, grpid);
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}
|
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/* if this group has subgroups, call recursively on each of them */
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NC_CHECK( nc_inq_grps(ncid, &numgrps, NULL) );
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if(numgrps > 0) {
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/* Allocate memory to hold the list of group ids. */
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ncids = emalloc(numgrps * sizeof(int));
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/* Get the list of group ids. */
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NC_CHECK( nc_inq_grps(ncid, NULL, ncids) );
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/* Call this function recursively for each group. */
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for (g = 0; g < numgrps; g++) {
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count += nc_inq_grpname_count(ncids[g], igrp, lgrps, grpids);
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}
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free(ncids);
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}
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#endif /* USE_NETCDF4 */
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return count;
|
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}
|
|
|
|
/* Check if any group names specified with "-g grp1,...,grpn" are
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* missing. Returns total number of matching groups if no missing
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|
* groups detected, otherwise exits. */
|
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int
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grp_matches(int ncid, int nlgrps, char** lgrps, idnode_t *grpids) {
|
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int ig;
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size_t total = 0;
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|
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for (ig=0; ig < nlgrps; ig++) {
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size_t count = nc_inq_grpname_count(ncid, ig, lgrps, grpids);
|
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if(count == 0) {
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error("%s: No such group", lgrps[ig]);
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return 0;
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}
|
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total += count;
|
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}
|
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return total;
|
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}
|
|
|
|
/* Returns 1 if string s1 ends with string s2, 0 otherwise. */
|
|
int
|
|
strendswith(const char *s1, const char *s2) {
|
|
size_t m1 = strlen(s1);
|
|
size_t m2 = strlen(s2);
|
|
if (m1 < m2)
|
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return 0;
|
|
return (strcmp(s1 + (m1 - m2), s2) == 0);
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}
|
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|
|
/* Get varid of variable with name using nested group syntax
|
|
* "gp1/gp2/var" or "/gp1/gp2/var". In the former case, grpname of
|
|
* grp corresponding to grpid must end in "gp1/gp2". In the latter
|
|
* case, grpname for grpid must be exactly "/gp1/gp2". If variable
|
|
* named "var" is not in group grpid, returns NC_ENOTVAR, else sets
|
|
* varid and returns NC_NOERR. */
|
|
int
|
|
nc_inq_gvarid(int grpid, const char *varname, int *varidp) {
|
|
/* if varname has no "/" chars, then
|
|
return varidp from nc_inq_varid(grpid, varname, varidp)
|
|
if varname begins with "/"
|
|
|
|
else
|
|
get groupname corresponding to grpid
|
|
get vargroup = substring of varname up to last "/"
|
|
get relname = substring of varname after last "/"
|
|
if (varname starts with "/" and groupname == vargroup) ||
|
|
(groupname ends with vargroup)
|
|
return nc_inq_varid(grpid, relname, varidp)
|
|
else
|
|
return NC_ENOTVAR
|
|
*/
|
|
|
|
#ifdef USE_NETCDF4
|
|
char *vargroup;
|
|
char *relname;
|
|
char *groupname;
|
|
int status;
|
|
if (varname[0] == '\0')
|
|
return NC_ENOTVAR;
|
|
vargroup = strdup(varname);
|
|
if (vargroup == NULL)
|
|
return NC_ENOMEM;
|
|
relname = strrchr(vargroup, NC_GRP_DELIM);
|
|
if (relname != NULL) { /* name has a "/" in it */
|
|
size_t len; /* length of full group name for grpid */
|
|
*relname++ = '\0'; /* split vargroup string in two,
|
|
* vargroup and relname */
|
|
if ( (status = nc_inq_grpname_full(grpid, &len, NULL)) != NC_NOERR ) {
|
|
free(vargroup);
|
|
return status;
|
|
}
|
|
groupname = (char *)emalloc(len + 1);
|
|
if ( (status = nc_inq_grpname_full(grpid, &len, groupname)) == NC_NOERR ) {
|
|
if(varname[0] == NC_GRP_DELIM) {
|
|
if( strcmp(groupname, vargroup) == 0)
|
|
status = nc_inq_varid(grpid, relname, varidp);
|
|
else
|
|
status = NC_ENOTVAR;
|
|
} else {
|
|
if(strendswith(groupname, vargroup))
|
|
status = nc_inq_varid(grpid, relname, varidp);
|
|
else
|
|
status = NC_ENOTVAR;
|
|
}
|
|
}
|
|
free(vargroup);
|
|
free(groupname);
|
|
return status;
|
|
}
|
|
free(vargroup);
|
|
#endif /* USE_NETCDF4 */
|
|
return nc_inq_varid(grpid, varname, varidp);
|
|
}
|
|
|
|
/* Determine whether a variable named varname exists in any group in
|
|
an open netCDF file with id ncid. If so, return the count of how
|
|
many matching variables were found, else return a count of 0. The
|
|
variable name can be absolute such as "/foo" or "/GRP1/GRP1A/foo",
|
|
in which case there is only one group to look in, given by the path
|
|
from the root group. Alternatively, the variable name can be
|
|
relative, such as "foo" or "GRPA/GRPB/foo", in which case every
|
|
group is examined for a variable with that relative name. */
|
|
size_t
|
|
nc_inq_varname_count(int ncid, char *varname) {
|
|
/*
|
|
count = 0;
|
|
status = nc_inq_gvarid(ncid, varname, varid);
|
|
if (status == NC_NOERR)
|
|
count++;
|
|
for each subgroup gid {
|
|
count += nc_inq_varname_count(gid, varname);
|
|
}
|
|
return count;
|
|
*/
|
|
size_t count = 0;
|
|
int varid;
|
|
/* look in this group */
|
|
int status = nc_inq_gvarid(ncid, varname, &varid);
|
|
#ifdef USE_NETCDF4
|
|
int numgrps;
|
|
int *ncids;
|
|
int g;
|
|
#endif
|
|
|
|
if (status == NC_NOERR)
|
|
count++;
|
|
|
|
#ifdef USE_NETCDF4
|
|
/* if this group has subgroups, call recursively on each of them */
|
|
NC_CHECK( nc_inq_grps(ncid, &numgrps, NULL) );
|
|
|
|
/* Allocate memory to hold the list of group ids. */
|
|
ncids = emalloc((numgrps + 1) * sizeof(int));
|
|
|
|
/* Get the list of group ids. */
|
|
NC_CHECK( nc_inq_grps(ncid, NULL, ncids) );
|
|
|
|
/* Call this function for each group. */
|
|
for (g = 0; g < numgrps; g++) {
|
|
count += nc_inq_varname_count(ncids[g], varname);
|
|
}
|
|
free(ncids);
|
|
#endif /* USE_NETCDF4 */
|
|
return count;
|
|
|
|
}
|
|
|
|
/* Check if any variable names specified with "-v var1,...,varn" are
|
|
* missing. Returns 0 if no missing variables detected, otherwise
|
|
* exits. */
|
|
int
|
|
missing_vars(int ncid, int nlvars, char **lvars) {
|
|
int iv;
|
|
for (iv=0; iv < nlvars; iv++) {
|
|
if(nc_inq_varname_count(ncid, lvars[iv]) == 0) {
|
|
error("%s: No such variable", lvars[iv]);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
make_lvars(char *optarg, int *nlvarsp, char ***lvarsp)
|
|
{
|
|
char *cp = optarg;
|
|
int nvars = 1;
|
|
char ** cpp;
|
|
|
|
/* compute number of variable names in comma-delimited list */
|
|
*nlvarsp = 1;
|
|
while (*cp++)
|
|
if (*cp == ',')
|
|
nvars++;
|
|
*nlvarsp = nvars;
|
|
*lvarsp = (char **) emalloc(nvars * sizeof(char*));
|
|
cpp = *lvarsp;
|
|
/* copy variable names into list */
|
|
for (cp = strtok(optarg, ","); cp != NULL; cp = strtok((char *) NULL, ",")) {
|
|
*cpp = strdup(cp);
|
|
cpp++;
|
|
}
|
|
}
|
|
|
|
void
|
|
make_lgrps(char *optarg, int *nlgrps, char ***lgrpsp, idnode_t **grpidsp)
|
|
{
|
|
char *cp = optarg;
|
|
int ngrps = 1;
|
|
char ** cpp;
|
|
|
|
/* compute number of group names in comma-delimited list */
|
|
while (*cp++)
|
|
if (*cp == ',')
|
|
ngrps++;
|
|
*nlgrps = ngrps;
|
|
*lgrpsp = (char **) emalloc(ngrps * sizeof(char*));
|
|
cpp = *lgrpsp;
|
|
/* copy group names into list */
|
|
for (cp = strtok(optarg, ","); cp != NULL; cp = strtok((char *) NULL, ",")) {
|
|
*cpp = strdup(cp);
|
|
cpp++;
|
|
}
|
|
/* make empty list of grpids, to be filled in after input file opened */
|
|
*grpidsp = newidlist();
|
|
}
|
|
|
|
/* initialize and return a new empty stack of grpids */
|
|
static ncgiter_t *
|
|
gs_init() {
|
|
ncgiter_t *s = emalloc(sizeof(ncgiter_t));
|
|
s->ngrps = 0;
|
|
s->top = NULL;
|
|
return s;
|
|
}
|
|
|
|
/* free a stack and all its nodes */
|
|
static void
|
|
gs_free(ncgiter_t *s) {
|
|
grpnode_t *n0, *n1;
|
|
n0 = s->top;
|
|
while (n0) {
|
|
n1 = n0->next;
|
|
free(n0);
|
|
n0 = n1;
|
|
}
|
|
free(s);
|
|
}
|
|
|
|
/* test if a stack is empty */
|
|
static int
|
|
gs_empty(ncgiter_t *s)
|
|
{
|
|
return s->ngrps == 0;
|
|
}
|
|
|
|
/* push a grpid on stack */
|
|
static void
|
|
gs_push(ncgiter_t *s, int grpid)
|
|
{
|
|
grpnode_t *node = emalloc(sizeof(grpnode_t));
|
|
|
|
node->grpid = grpid;
|
|
node->next = gs_empty(s) ? NULL : s->top;
|
|
s->top = node;
|
|
s->ngrps++;
|
|
}
|
|
|
|
/* pop value off stack and return */
|
|
static int
|
|
gs_pop(ncgiter_t *s)
|
|
{
|
|
if (gs_empty(s)) {
|
|
return -1; /* underflow, stack is empty */
|
|
} else { /* pop a node */
|
|
grpnode_t *top = s->top;
|
|
int value = top->grpid;
|
|
s->top = top->next;
|
|
/* TODO: first call to free gets seg fault with libumem */
|
|
free(top);
|
|
s->ngrps--;
|
|
return value;
|
|
}
|
|
}
|
|
|
|
#ifdef UNUSED
|
|
/* Return top value on stack without popping stack. Defined for
|
|
* completeness but not used (here). */
|
|
static int
|
|
gs_top(ncgiter_t *s)
|
|
{
|
|
if (gs_empty(s)) {
|
|
return -1; /* underflow, stack is empty */
|
|
} else { /* get top value */
|
|
grpnode_t *top = s->top;
|
|
int value = top->grpid;
|
|
return value;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* Like netCDF-4 function nc_inq_grps(), but can be called from
|
|
* netCDF-3 only code as well. Maybe this is what nc_inq_grps()
|
|
* should do if built without netCDF-4 data model support. */
|
|
static int
|
|
nc_inq_grps2(int ncid, int *numgrps, int *grpids)
|
|
{
|
|
int stat = NC_NOERR;
|
|
|
|
/* just check if ncid is valid id of open netCDF file */
|
|
NC_CHECK(nc_inq(ncid, NULL, NULL, NULL, NULL));
|
|
|
|
#ifdef USE_NETCDF4
|
|
NC_CHECK(nc_inq_grps(ncid, numgrps, grpids));
|
|
#else
|
|
*numgrps = 0;
|
|
#endif
|
|
return stat;
|
|
}
|
|
|
|
/* Initialize group iterator for start group and all its descendant
|
|
* groups. */
|
|
int
|
|
nc_get_giter(int grpid, /* start group id */
|
|
ncgiter_t **iterp /* returned opaque iteration state */
|
|
)
|
|
{
|
|
int stat = NC_NOERR;
|
|
|
|
stat = nc_inq(grpid, NULL, NULL, NULL, NULL); /* check if grpid is valid */
|
|
if(stat != NC_EBADGRPID && stat != NC_EBADID) {
|
|
*iterp = gs_init();
|
|
gs_push(*iterp, grpid);
|
|
}
|
|
|
|
return stat;
|
|
}
|
|
|
|
/*
|
|
* Get group id of next group. On first call gets start group id,
|
|
* subsequently returns other subgroup ids in preorder. Returns zero
|
|
* when no more groups left.
|
|
*/
|
|
int
|
|
nc_next_giter(ncgiter_t *iterp, int *grpidp) {
|
|
int stat = NC_NOERR;
|
|
int numgrps;
|
|
int *grpids;
|
|
int i;
|
|
|
|
if(gs_empty(iterp)) {
|
|
*grpidp = 0; /* not a group, signals iterator is done */
|
|
} else {
|
|
*grpidp = gs_pop(iterp);
|
|
NC_CHECK(nc_inq_grps2(*grpidp, &numgrps, NULL));
|
|
if(numgrps > 0) {
|
|
grpids = (int *)emalloc(sizeof(int) * numgrps);
|
|
NC_CHECK(nc_inq_grps2(*grpidp, &numgrps, grpids));
|
|
for(i = numgrps - 1; i >= 0; i--) { /* push ids on stack in reverse order */
|
|
gs_push(iterp, grpids[i]);
|
|
}
|
|
free(grpids);
|
|
}
|
|
}
|
|
return stat;
|
|
}
|
|
|
|
/*
|
|
* Release group iter.
|
|
*/
|
|
void
|
|
nc_free_giter(ncgiter_t *iterp)
|
|
{
|
|
gs_free(iterp);
|
|
}
|
|
|
|
/*
|
|
* Get total number of groups (including the top-level group and all
|
|
* descendant groups, recursively) and all descendant subgroup ids
|
|
* (including the input rootid of the start group) for a group and
|
|
* all its descendants, in preorder.
|
|
*
|
|
* If grpids or numgrps is NULL, it will be ignored. So typical use
|
|
* is to call with grpids NULL to get numgrps, allocate enough space
|
|
* for the group ids, then call again to get them.
|
|
*/
|
|
int
|
|
nc_inq_grps_full(int rootid, int *numgrps, int *grpids)
|
|
{
|
|
int stat = NC_NOERR;
|
|
ncgiter_t *giter; /* pointer to group iterator */
|
|
int grpid;
|
|
size_t count;
|
|
|
|
NC_CHECK(nc_get_giter(rootid, &giter));
|
|
|
|
count = 0;
|
|
NC_CHECK(nc_next_giter(giter, &grpid));
|
|
while(grpid != 0) {
|
|
if(grpids)
|
|
grpids[count] = grpid;
|
|
count++;
|
|
NC_CHECK(nc_next_giter(giter, &grpid));
|
|
}
|
|
if(numgrps)
|
|
*numgrps = count;
|
|
nc_free_giter(giter);
|
|
return stat;
|
|
}
|
|
|
|
int
|
|
getrootid(int grpid)
|
|
{
|
|
int current = grpid;
|
|
#ifdef USE_NETCDF4
|
|
int parent = current;
|
|
/* see if root id */
|
|
for(;;) {
|
|
int stat = nc_inq_grp_parent(current,&parent);
|
|
if(stat) break;
|
|
current = parent;
|
|
}
|
|
#endif
|
|
return current;
|
|
}
|
|
|
|
#if 0
|
|
static int
|
|
parseFQN(int ncid, const char* fqn0, VarID* idp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
char* fqn;
|
|
VarID vid;
|
|
char* p;
|
|
char* q;
|
|
char* segment;
|
|
|
|
vid.grpid = ncid;
|
|
if(fqn0 == NULL || fqn0[1] != '/')
|
|
{stat = NC_EBADNAME; goto done;}
|
|
fqn = strdup(fqn0+1); /* skip leading '/'*/
|
|
p = fqn;
|
|
for(;;) {
|
|
int newgrp;
|
|
segment = p;
|
|
q = p;
|
|
while(*p != '\0' && *p != '/') {
|
|
if(*p == '\\') p++;
|
|
*q++ = *p++;
|
|
}
|
|
if(*p == '\0') break;
|
|
*p++ = '\0';
|
|
if((stat=nc_inq_grp_ncid(vid.grpid,segment,&newgrp))) goto done;
|
|
vid.grpid = newgrp;
|
|
}
|
|
/* Segment should point to the varname */
|
|
if((stat=nc_inq_varid(vid.grpid,segment,&vid.varid))) goto done;
|
|
done:
|
|
if(fqn) free(fqn);
|
|
if(stat == NC_NOERR && idp != NULL) *idp = vid;
|
|
return stat;
|
|
}
|
|
#endif
|