NCEPLIBS-bufr  11.7.0
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srchtbf.c
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1 
4 #include "bufrlib.h"
5 #include "cfe.h"
6 
74 void srchtbf( f77int *ifxyi, f77int *ivali, f77int *ifxyd, f77int *mxfxyd, f77int *ivald,
75  char *meaning, f77int *mxmng, f77int *lnmng, f77int *iret )
76 {
77  struct code_flag_entry key, *pkey, *pcfe, *pbs;
78 
79  int ipt, ii, slmng;
80 
81  *iret = -1;
82 
83  /*
84  ** Initialize some values for searching the internal table.
85  */
86 
87  key.iffxyn = *ifxyi;
88  key.ifval = *ivali;
89  key.iffxynd = ifxyd[0];
90  key.ifvald = *ivald;
91 
92  pkey = &key;
93  pcfe = &cfe[0];
94 
95  /*
96  ** Search for a matching entry.
97  */
98  pbs = ( struct code_flag_entry * ) bsearch( pkey, pcfe, ( size_t ) nmtf,
99  sizeof( struct code_flag_entry ),
100  ( int (*) ( const void *, const void * ) ) cmpstia1 );
101  if ( pbs != NULL ) {
102  /*
103  ** A matching entry was found, so set the appropriate output
104  ** values and return.
105  */
106  ipt = pbs - pcfe;
107  slmng = strlen( cfe[ipt].ifmeaning );
108  *lnmng = ( *mxmng > slmng ? slmng : *mxmng );
109  strncpy( meaning, &cfe[ipt].ifmeaning[0], *lnmng );
110  *iret = 0;
111  return;
112  }
113 
114  /*
115  ** Was a particular dependency specified in the input?
116  */
117  if ( key.iffxynd != -1 ) {
118  /*
119  ** YES, so there's nothing else to do.
120  */
121  return;
122  }
123 
124  /*
125  ** NO, so check whether the given Table B descriptor and value have any
126  ** dependencies, and if so then return a list of those dependencies.
127  */
128  pbs = ( struct code_flag_entry * ) bsearch( pkey, pcfe, ( size_t ) nmtf,
129  sizeof( struct code_flag_entry ),
130  ( int (*) ( const void *, const void * ) ) cmpstia2 );
131  if ( pbs == NULL ) {
132  /*
133  ** There are no dependencies.
134  */
135  return;
136  }
137 
138  /*
139  ** Store the dependency that was returned by the secondary search.
140  ** However, there may be others within the internal table, so we'll
141  ** also need to check for those.
142  */
143  ipt = pbs - pcfe;
144  *iret = 0;
145  ifxyd[(*iret)++] = cfe[ipt].iffxynd;
146 
147  /*
148  ** Since the internal table is sorted, check immediately before and
149  ** after the returned dependency for any additional table entries which
150  ** correspond to the same Table B descriptor and value, but for which the
151  ** dependency is different. If any such additional dependencies are
152  ** found, return those as well.
153  */
154  ii = ipt - 1;
155  while ( ( ii >= 0 ) &&
156  ( *iret < *mxfxyd ) &&
157  ( cfe[ii].iffxyn == key.iffxyn ) &&
158  ( cfe[ii].ifval == key.ifval ) ) {
159  if ( cfe[ii].iffxynd < ifxyd[(*iret)-1] )
160  ifxyd[(*iret)++] = cfe[ii].iffxynd;
161  ii--;
162  }
163  ii = ipt + 1;
164  while ( ( ii < nmtf ) &&
165  ( *iret < *mxfxyd ) &&
166  ( cfe[ii].iffxyn == key.iffxyn ) &&
167  ( cfe[ii].ifval == key.ifval ) ) {
168  if ( ( cfe[ii].iffxynd > ifxyd[(*iret)-1] ) &&
169  ( cfe[ii].iffxynd > cfe[ipt].iffxynd ) )
170  ifxyd[(*iret)++] = cfe[ii].iffxynd;
171  ii++;
172  }
173 
174  return;
175 }
Define signatures to enable a number of BUFRLIB subprograms to be called directly from C application ...
f77int ifval
Code figure or bit number.
Definition: cfe.h:52
f77int iffxynd
Bit-wise representation of FXY number upon which this entry is dependent, if any. ...
Definition: cfe.h:54
int cmpstia1(const void *, const void *)
This function defines a comparison between two entries within the internal memory structure for stora...
Definition: cmpstia1.c:34
char ifmeaning[MAX_MEANING_LEN+1]
Meaning corresponding to ifval.
Definition: cfe.h:53
f77int nmtf
Number of stored master Code/Flag table entries in cfe, up to a maximum of MXMTBF.
int cmpstia2(const void *, const void *)
This function defines a comparison between two entries within the internal memory structure for stora...
Definition: cmpstia2.c:34
This structure contains array and variable declarations used to store a master Code/Flag table entry...
Definition: cfe.h:33
f77int ifvald
Code figure or bit number upon which this entry is dependent, if any.
Definition: cfe.h:55
f77int iffxyn
Bit-wise representation of FXY number to which this entry belongs.
Definition: cfe.h:51
struct code_flag_entry * cfe
Master Code/Flag table entries.
void srchtbf(f77int *, f77int *, f77int *, f77int *, f77int *, char *, f77int *, f77int *, f77int *)
This subroutine searches for a specified FXY number and associated value (code figure or bit number) ...
Definition: srchtbf.c:74
Define signatures and declare variables for internal storage of master Code/Flag table entries...