cdf_util.c 9.38 KB
Newer Older
1
2
3
4
5
#include <string.h>
#include <ctype.h>
#include "dmemory.h"
#include "cdi.h"
#include "cdf_util.h"
6
#include "error.h"
7
8


9
char *strToLower(char *str)
10
{
11
12
  if (str)
    for (size_t i = 0; str[i]; ++i)
13
      str[i] = (char)tolower((int)str[i]);
14
15

  return str;
16
17
}

18

19
bool strStartsWith(const char *vstr, const char *cstr)
20
21
{
  bool is_equal = false;
22
23
24
25
26
27
  if (vstr && *vstr)
    {
      size_t clen = (cstr != NULL) ? strlen(cstr) : 0;
      size_t vlen = (vstr != NULL) ? strlen(vstr) : 0;
      if (clen <= vlen) is_equal = (memcmp(vstr, cstr, clen) == 0);
    }
28
29
  return is_equal;
}
30
31
32
33
34

int get_timeunit(size_t len, const char *ptu)
{
  int timeunit = -1;

35
36
  while ( isspace(*ptu) && len ) { ptu++; len--; }

37
38
  if ( len > 2 )
    {
39
40
41
42
43
44
45
      if      ( strStartsWith(ptu, "sec") )            timeunit = TUNIT_SECOND;
      else if ( strStartsWith(ptu, "minute") )         timeunit = TUNIT_MINUTE;
      else if ( strStartsWith(ptu, "hour") )           timeunit = TUNIT_HOUR;
      else if ( strStartsWith(ptu, "day") )            timeunit = TUNIT_DAY;
      else if ( strStartsWith(ptu, "month") )          timeunit = TUNIT_MONTH;
      else if ( strStartsWith(ptu, "calendar_month") ) timeunit = TUNIT_MONTH;
      else if ( strStartsWith(ptu, "year") )           timeunit = TUNIT_YEAR;
46
    }
47
  else if ( len == 1 && ptu[0] == 's' )  timeunit = TUNIT_SECOND;
48
49
50
51
52
53
54

  return timeunit;
}


bool is_time_units(const char *timeunits)
{
55
56
  while ( isspace(*timeunits) ) timeunits++; 

57
58
59
60
61
62
63
  bool status = strStartsWith(timeunits, "sec")
             || strStartsWith(timeunits, "minute")
             || strStartsWith(timeunits, "hour")
             || strStartsWith(timeunits, "day")
             || strStartsWith(timeunits, "month")
             || strStartsWith(timeunits, "calendar_month")
             || strStartsWith(timeunits, "year");
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87

  return status;
}


bool is_timeaxis_units(const char *timeunits)
{
  bool status = false;

  size_t len = strlen(timeunits);
  char *tu = (char *) Malloc((len+1)*sizeof(char));
  memcpy(tu, timeunits, (len+1) * sizeof(char));
  char *ptu = tu;

  for ( size_t i = 0; i < len; i++ ) ptu[i] = (char)tolower((int)ptu[i]);

  int timeunit = get_timeunit(len, ptu);
  if ( timeunit != -1 )
    {
      while ( ! isspace(*ptu) && *ptu != 0 ) ptu++;
      if ( *ptu )
        {
          while ( isspace(*ptu) ) ptu++;

88
89
          int timetype = strStartsWith(ptu, "as") ? TAXIS_ABSOLUTE :
                         strStartsWith(ptu, "since") ? TAXIS_RELATIVE : -1;
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104

          status = timetype != -1;
        }
    }

  Free(tu);

  return status;
}


bool is_height_units(const char *units)
{
  int u0 = units[0];

Thomas Jahns's avatar
Thomas Jahns committed
105
106
  bool status
    = (u0=='m' && (!units[1] || strncmp(units, "meter", 5) == 0))
107
108
109
110
111
    || (!units[2] && units[1]=='m' && (u0=='c' || u0=='d' || u0=='k'))
    || (strncmp(units, "decimeter", 9) == 0)
    || (strncmp(units, "centimeter", 10) == 0)
    || (strncmp(units, "millimeter", 10) == 0)
    || (strncmp(units, "kilometer", 9) == 0);
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194

  return status;
}


bool is_pressure_units(const char *units)
{
  bool status = false;

  if ( strncmp(units, "millibar", 8) == 0 ||
       strncmp(units, "mb", 2)       == 0 ||
       strncmp(units, "hectopas", 8) == 0 ||
       strncmp(units, "hPa", 3)      == 0 ||
       strncmp(units, "Pa", 2)       == 0 )
    {
      status = true;
    }

  return status;
}


bool is_DBL_axis(/*const char *units,*/ const char *longname)
{
  bool status = false;

  if ( strcmp(longname, "depth below land")         == 0 ||
       strcmp(longname, "depth_below_land")         == 0 ||
       strcmp(longname, "levels below the surface") == 0 )
    {
      /*
      if ( strcmp(ncvars[ncvarid].units, "cm") == 0 ||
           strcmp(ncvars[ncvarid].units, "dm") == 0 ||
           strcmp(ncvars[ncvarid].units, "m")  == 0 )
      */
        status = true;
    }

  return status;
}


bool is_depth_axis(const char *stdname, const char *longname)
{
  bool status = false;

  if ( strcmp(stdname, "depth") == 0 )
    status = true;
  else
    if ( strcmp(longname, "depth_below_sea") == 0 ||
         strcmp(longname, "depth below sea") == 0 )
      {
        status = true;
      }

  return status;
}


bool is_height_axis(const char *stdname, const char *longname)
{
  bool status = false;

  if ( strcmp(stdname, "height") == 0 )
    status = true;
  else
    if ( strcmp(longname, "height") == 0 ||
         strcmp(longname, "height above the surface") == 0 )
      {
        status = true;
      }

  return status;
}


bool is_lon_axis(const char *units, const char *stdname)
{
  bool status = false;
  char lc_units[16];

  memcpy(lc_units, units, 15);
  lc_units[15] = 0;
195
  strToLower(lc_units);
196

197
198
  if ( (strStartsWith(lc_units, "degree") || strStartsWith(lc_units, "radian")) &&
       (strStartsWith(stdname, "grid_longitude") || strStartsWith(stdname, "longitude")) )
199
200
201
    {
      status = true;
    }
202
203
204
  else if ( strStartsWith(lc_units, "degree")
            && !strStartsWith(stdname, "grid_latitude")
            && !strStartsWith(stdname, "latitude") )
205
206
207
    {
      int ioff = 6;
      if ( lc_units[ioff] == 's' ) ioff++;
208
      if ( lc_units[ioff] == ' ' ) ioff++;
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
      if ( lc_units[ioff] == '_' ) ioff++;
      if ( lc_units[ioff] == 'e' ) status = true;
    }

  return status;
}


bool is_lat_axis(const char *units, const char *stdname)
{
  bool status = false;
  char lc_units[16];

  memcpy(lc_units, units, 15);
  lc_units[15] = 0;
224
  strToLower(lc_units);
225

226
227
  if ( (strStartsWith(lc_units, "degree") || strStartsWith(lc_units, "radian")) &&
        (strStartsWith(stdname, "grid_latitude") || strStartsWith(stdname, "latitude")) )
228
229
230
    {
      status = true;
    }
231
232
233
  else if ( strStartsWith(lc_units, "degree")
            && !strStartsWith(stdname, "grid_longitude")
            && !strStartsWith(stdname, "longitude") )
234
235
236
    {
      int ioff = 6;
      if ( lc_units[ioff] == 's' ) ioff++;
237
      if ( lc_units[ioff] == ' ' ) ioff++;
238
239
240
241
242
243
      if ( lc_units[ioff] == '_' ) ioff++;
      if ( lc_units[ioff] == 'n' || lc_units[ioff] == 's' ) status = true;
    }

  return status;
}
244
245


246
247
bool is_x_axis(const char *units, const char *stdname)
{
Uwe Schulzweida's avatar
Uwe Schulzweida committed
248
  (void)units;
249
  return (strcmp(stdname, "projection_x_coordinate") == 0);
250
251
252
253
254
}


bool is_y_axis(const char *units, const char *stdname)
{
Uwe Schulzweida's avatar
Uwe Schulzweida committed
255
  (void)units;
256
  return (strcmp(stdname, "projection_y_coordinate") == 0);
257
258
259
}


260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
void set_gridtype(const char *attstring, int *gridtype)
{
  if      ( strcmp(attstring, "gaussian reduced") == 0 )
    *gridtype = GRID_GAUSSIAN_REDUCED;
  else if ( strcmp(attstring, "gaussian") == 0 )
    *gridtype = GRID_GAUSSIAN;
  else if ( strncmp(attstring, "spectral", 8) == 0 )
    *gridtype = GRID_SPECTRAL;
  else if ( strncmp(attstring, "fourier", 7) == 0 )
    *gridtype = GRID_FOURIER;
  else if ( strcmp(attstring, "trajectory") == 0 )
    *gridtype = GRID_TRAJECTORY;
  else if ( strcmp(attstring, "generic") == 0 )
    *gridtype = GRID_GENERIC;
  else if ( strcmp(attstring, "cell") == 0 )
275
    *gridtype = GRID_UNSTRUCTURED;
276
  else if ( strcmp(attstring, "unstructured") == 0 )
277
    *gridtype = GRID_UNSTRUCTURED;
278
  else if ( strcmp(attstring, "curvilinear") == 0 )
279
    ;
280
281
  else if ( strcmp(attstring, "characterxy") == 0 )
    *gridtype = GRID_CHARXY;
282
283
284
285
286
287
  else if ( strcmp(attstring, "sinusoidal") == 0 )
    ;
  else if ( strcmp(attstring, "laea") == 0 )
    ;
  else if ( strcmp(attstring, "lcc2") == 0 )
    ;
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
  else if ( strcmp(attstring, "linear") == 0 ) // ignore grid type linear
    ;
  else
    {
      static bool warn = true;
      if ( warn )
        {
          warn = false;
          Warning("NetCDF attribute grid_type='%s' unsupported!", attstring);
        }
    }
}


void set_zaxistype(const char *attstring, int *zaxistype)
{
  if      ( strcmp(attstring, "toa") == 0 ) *zaxistype = ZAXIS_TOA;
  else if ( strcmp(attstring, "cloudbase") == 0 ) *zaxistype = ZAXIS_CLOUD_BASE;
  else if ( strcmp(attstring, "cloudtop") == 0 ) *zaxistype = ZAXIS_CLOUD_TOP;
  else if ( strcmp(attstring, "isotherm0") == 0 ) *zaxistype = ZAXIS_ISOTHERM_ZERO;
  else if ( strcmp(attstring, "seabottom") == 0 ) *zaxistype = ZAXIS_SEA_BOTTOM;
  else if ( strcmp(attstring, "lakebottom") == 0 ) *zaxistype = ZAXIS_LAKE_BOTTOM;
  else if ( strcmp(attstring, "sedimentbottom") == 0 ) *zaxistype = ZAXIS_SEDIMENT_BOTTOM;
  else if ( strcmp(attstring, "sedimentbottomta") == 0 ) *zaxistype = ZAXIS_SEDIMENT_BOTTOM_TA;
  else if ( strcmp(attstring, "sedimentbottomtw") == 0 ) *zaxistype = ZAXIS_SEDIMENT_BOTTOM_TW;
  else if ( strcmp(attstring, "mixlayer") == 0 ) *zaxistype = ZAXIS_MIX_LAYER;
  else if ( strcmp(attstring, "atmosphere") == 0 ) *zaxistype = ZAXIS_ATMOSPHERE;
  else
    {
      static bool warn = true;
      if ( warn )
        {
          warn = false;
          Warning("NetCDF attribute level_type='%s' unsupported!", attstring);
        }
    }  
}
325
326
327
328


void set_calendar(const char *attstring, int *calendar)
{
329
  if ( strStartsWith(attstring, "standard") )
330
    *calendar = CALENDAR_STANDARD;
331
  else if ( strStartsWith(attstring, "gregorian") )
Uwe Schulzweida's avatar
Uwe Schulzweida committed
332
    *calendar = CALENDAR_GREGORIAN;
333
  else if ( strStartsWith(attstring, "none") )
334
    *calendar = CALENDAR_NONE;
335
  else if ( strStartsWith(attstring, "proleptic") )
336
    *calendar = CALENDAR_PROLEPTIC;
337
  else if ( strStartsWith(attstring, "360") )
338
    *calendar = CALENDAR_360DAYS;
339
340
  else if ( strStartsWith(attstring, "365") ||
            strStartsWith(attstring, "noleap") )
341
    *calendar = CALENDAR_365DAYS;
342
343
  else if ( strStartsWith(attstring, "366") ||
            strStartsWith(attstring, "all_leap") )
344
345
346
347
    *calendar = CALENDAR_366DAYS;
  else
    Warning("calendar >%s< unsupported!", attstring);
}