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root/radiance/ray/src/util/wrapBSDF.c
Revision: 2.5
Committed: Sat Feb 14 18:33:07 2015 UTC (7 years, 9 months ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.4: +8 -2 lines
Log Message:
Further tidying up of output

File Contents

# User Rev Content
1 greg 2.1 #ifndef lint
2 greg 2.5 static const char RCSid[] = "$Id: wrapBSDF.c,v 2.4 2015/02/14 00:39:21 greg Exp $";
3 greg 2.1 #endif
4     /*
5 greg 2.2 * Wrap BSDF data in valid WINDOW XML file
6 greg 2.1 *
7 greg 2.2 * G. Ward February 2015
8 greg 2.1 */
9    
10     #include <ctype.h>
11     #include "rtio.h"
12     #include "rtprocess.h"
13     #include "ezxml.h"
14     #include "bsdf.h"
15     #include "bsdf_m.h"
16     /* XML template file names */
17     const char def_template[] = "minimalBSDFt.xml";
18 greg 2.3 const char win6_template[] = "WINDOW6BSDFt.xml";
19 greg 2.1
20     const char stdin_name[] = "<stdin>";
21    
22     /* input files (can be stdin_name) */
23     const char *xml_input = NULL;
24     /* unit for materials & geometry */
25 greg 2.2 const char *attr_unit = "meter";
26 greg 2.1 const char legal_units[] = "meter|foot|inch|centimeter|millimeter";
27     /* system materials & geometry */
28     const char *mgf_geometry = NULL;
29    
30     /* angle basis */
31     enum { ABdefault=-1, ABklemsFull=0, ABklemsHalf, ABklemsQuarter,
32     ABtensorTree3, ABtensorTree4, ABend };
33    
34     int angle_basis = ABdefault;
35    
36     /* field IDs and nicknames */
37     struct s_fieldID {
38     char nickName[4];
39 greg 2.3 short has_unit;
40     short win_need;
41 greg 2.1 const char *fullName;
42     } XMLfieldID[] = {
43 greg 2.3 {"m", 0, 1, "Manufacturer"},
44     {"n", 0, 1, "Name"},
45     {"c", 0, 0, "ThermalConductivity"},
46     {"ef", 0, 0, "EmissivityFront"},
47     {"eb", 0, 0, "EmissivityBack"},
48     {"tir", 0, 0, "TIR"},
49     {"eo", 0, 0, "EffectiveOpennessFraction"},
50     {"t", 1, 1, "Thickness"},
51     {"h", 1, 0, "Height"},
52     {"w", 1, 0, "Width"},
53     {"\0", 0, 0, NULL} /* terminator */
54 greg 2.1 };
55     /* field assignments */
56     #define MAXASSIGN 12
57     const char *field_assignment[MAXASSIGN];
58     int nfield_assign = 0;
59     #define FASEP ';'
60    
61     /* data file(s) & spectra */
62     enum { DTtransForward, DTtransBackward, DTreflForward, DTreflBackward };
63    
64     enum { DSsolar=-1, DSnir=-2, DSxbar31=-3, DSvisible=-4, DSzbar31=-5 };
65    
66     #define MAXFILES 20
67    
68     struct s_dfile {
69     const char *fname; /* input data file name */
70     short type; /* BSDF data type */
71     short spectrum; /* BSDF sensor spectrum */
72     } data_file[MAXFILES];
73    
74     int ndataf = 0; /* number of data files */
75    
76     const char *spectr_file[MAXFILES]; /* custom spectral curve input */
77    
78     const char top_level_name[] = "WindowElement";
79    
80 greg 2.3 static char basis_definition[][256] = {
81 greg 2.1
82 greg 2.4 "\t<DataDefinition>\n"
83 greg 2.1 "\t\t<IncidentDataStructure>Columns</IncidentDataStructure>\n"
84     "\t\t<AngleBasis>\n"
85     "\t\t\t<AngleBasisName>LBNL/Klems Full</AngleBasisName>\n"
86 greg 2.4 "\t\t\t</AngleBasis>\n"
87     "\t</DataDefinition>\n",
88 greg 2.1
89 greg 2.4 "\t<DataDefinition>\n"
90 greg 2.1 "\t\t<IncidentDataStructure>Columns</IncidentDataStructure>\n"
91     "\t\t<AngleBasis>\n"
92     "\t\t\t<AngleBasisName>LBNL/Klems Half</AngleBasisName>\n"
93 greg 2.4 "\t\t\t</AngleBasis>\n"
94     "\t</DataDefinition>\n",
95 greg 2.1
96 greg 2.4 "\t<DataDefinition>\n"
97 greg 2.1 "\t\t<IncidentDataStructure>Columns</IncidentDataStructure>\n"
98     "\t\t<AngleBasis>\n"
99     "\t\t\t<AngleBasisName>LBNL/Klems Quarter</AngleBasisName>\n"
100 greg 2.4 "\t\t\t</AngleBasis>\n"
101     "\t</DataDefinition>\n",
102 greg 2.1
103 greg 2.4 "\t<DataDefinition>\n"
104     "\t\t<IncidentDataStructure>TensorTree3</IncidentDataStructure>\n"
105     "\t</DataDefinition>\n",
106    
107     "\t<DataDefinition>\n"
108     "\t\t<IncidentDataStructure>TensorTree4</IncidentDataStructure>\n"
109     "\t</DataDefinition>\n",
110 greg 2.1 };
111    
112     /* Copy data from file descriptor to stdout and close */
113     static int
114     copy_and_close(int fd)
115     {
116     int ok = 1;
117     char buf[8192];
118     int n;
119    
120     if (fd < 0)
121     return 0;
122     while ((n = read(fd, buf, sizeof(buf))) > 0)
123     if (write(fileno(stdout), buf, n) != n) {
124     ok = 0;
125     break;
126     }
127     ok &= (n == 0);
128     close(fd);
129     return ok;
130     }
131    
132     /* Allocate and assign string from file or stream */
133     static char *
134     input2str(const char *inpspec)
135     {
136     FILE *fp = NULL;
137     char *str;
138     int len, pos, n;
139    
140     if (inpspec == NULL || !*inpspec)
141     return "";
142     if (inpspec == stdin_name) { /* read from stdin */
143     fp = stdin;
144 greg 2.2 } else if (inpspec[0] == '!') { /* read from command */
145 greg 2.1 fp = popen(inpspec+1, "r");
146     if (fp == NULL) {
147     fprintf(stderr, "Cannot start process '%s'\n",
148 greg 2.2 inpspec);
149 greg 2.1 return "";
150     }
151     } else { /* else load file */
152     int fd = open(inpspec, O_RDONLY);
153     if (fd < 0) {
154     fprintf(stderr, "%s: cannot open\n", inpspec);
155     return "";
156     }
157     len = lseek(fd, 0L, SEEK_END);
158 greg 2.3 if (len > 0) {
159     lseek(fd, 0L, SEEK_SET);
160     str = (char *)malloc(len+1);
161     if (str == NULL) {
162     close(fd);
163     goto memerr;
164     }
165     if (read(fd, str, len) != len) {
166     fprintf(stderr, "%s: read error\n", inpspec);
167     free(str);
168     close(fd);
169     return "";
170     }
171     str[len] = '\0';
172 greg 2.1 close(fd);
173 greg 2.3 return str;
174 greg 2.1 }
175 greg 2.3 fp = fdopen(fd, "r"); /* not a regular file */
176 greg 2.1 }
177     /* reading from stream */
178     str = (char *)malloc((len=8192)+1);
179     if (str == NULL)
180     goto memerr;
181     pos = 0;
182     while ((n = read(fileno(fp), str+pos, len-pos)) > 0)
183     if ((pos += n) >= len) { /* need more space? */
184     str = (char *)realloc(str, (len += len>>2) + 1);
185     if (str == NULL)
186     goto memerr;
187     }
188     if (n < 0) {
189     fprintf(stderr, "%s: read error\n", inpspec);
190     free(str);
191     str = "";
192     } else { /* tidy up result */
193     str[pos] = '\0';
194     str = (char *)realloc(str, (len=pos)+1);
195     if (str == NULL)
196     goto memerr;
197     }
198 greg 2.2 if (inpspec[0] != '!')
199 greg 2.1 fclose(fp);
200     else if (pclose(fp))
201 greg 2.2 fprintf(stderr, "Error running command '%s'\n", inpspec);
202 greg 2.1 return str;
203     memerr:
204     fprintf(stderr, "%s: error allocating memory\n", inpspec);
205     if (fp != NULL)
206 greg 2.2 (inpspec[0] == '!') ? pclose(fp) : fclose(fp);
207 greg 2.1 return "";
208     }
209    
210     /* Make material assignments in field_assignment to XML fields */
211     static int
212     mat_assignments(const char *caller, const char *fn, ezxml_t wtl)
213     {
214     int i;
215    
216     wtl = ezxml_child(wtl, "Material");
217     if (wtl == NULL) {
218     fprintf(stderr, "%s: missing <Material> tag\n", fn);
219     return 0;
220     }
221     for (i = 0; i < nfield_assign; i++) {
222     const char *fnext = field_assignment[i];
223     for ( ; ; ) {
224 greg 2.5 int added = 0;
225 greg 2.1 ezxml_t fld;
226     char sbuf[512];
227     int j;
228    
229     while (isspace(*fnext))
230     ++fnext;
231     if (!*fnext)
232     break;
233 greg 2.3 for (j = 0; *fnext != '=' && !isspace(*fnext); ) {
234 greg 2.1 if (!*fnext | (*fnext == FASEP) |
235     (j >= sizeof(sbuf)-1)) {
236     fprintf(stderr,
237     "%s: bad tag name in assignment '%s'\n",
238     caller, field_assignment[i]);
239     return 0;
240     }
241     sbuf[j++] = *fnext++;
242     }
243 greg 2.2 sbuf[j] = '\0'; /* check known field */
244 greg 2.1 for (j = 0; XMLfieldID[j].nickName[0]; j++)
245 greg 2.2 if (!strcasecmp(sbuf, XMLfieldID[j].nickName) ||
246     !strcasecmp(sbuf, XMLfieldID[j].fullName)) {
247 greg 2.1 strcpy(sbuf, XMLfieldID[j].fullName);
248     break;
249     }
250     /* check if tag exists */
251     fld = ezxml_child(wtl, sbuf);
252     if (fld == NULL) { /* otherwise, create one */
253 greg 2.3 if (!XMLfieldID[j].nickName[0])
254     fprintf(stderr,
255     "%s: warning - adding tag <%s>\n",
256     fn, sbuf);
257 greg 2.5 ezxml_add_txt(wtl, "\t");
258 greg 2.1 fld = ezxml_add_child_d(wtl, sbuf, strlen(wtl->txt));
259 greg 2.5 ++added;
260 greg 2.1 }
261     if (XMLfieldID[j].has_unit)
262     ezxml_set_attr(fld, "unit", attr_unit);
263 greg 2.3 XMLfieldID[j].win_need = 0;
264 greg 2.1 while (isspace(*fnext))
265     ++fnext;
266     if (*fnext++ != '=') {
267     fprintf(stderr,
268     "%s: missing '=' in assignment '%s'\n",
269     caller, field_assignment[i]);
270     return 0;
271     }
272 greg 2.3 for (j = 0; *fnext && *fnext != FASEP; ) {
273 greg 2.1 if (j >= sizeof(sbuf)-1) {
274     fprintf(stderr,
275     "%s: field too long in '%s'\n",
276     caller, field_assignment[i]);
277     return 0;
278     }
279     sbuf[j++] = *fnext++;
280     }
281     sbuf[j] = '\0';
282     ezxml_set_txt_d(fld, sbuf);
283 greg 2.5 if (added)
284     ezxml_add_txt(wtl, "\n\t");
285 greg 2.1 fnext += (*fnext == FASEP);
286     }
287     }
288 greg 2.3 /* check required WINDOW settings */
289     if (xml_input == win6_template)
290     for (i = 0; XMLfieldID[i].nickName[0]; i++)
291     if (XMLfieldID[i].win_need &&
292     !ezxml_txt(ezxml_child(wtl,XMLfieldID[i].fullName))[0]) {
293     fprintf(stderr,
294     "%s: missing required '%s' assignment for WINDOW <%s>\n",
295     caller, XMLfieldID[i].nickName,
296     XMLfieldID[i].fullName);
297     return 0;
298     }
299 greg 2.1 return 1; /* no errors */
300     }
301    
302     /* Complete angle basis specification */
303     static int
304     finish_angle_basis(ezxml_t ab)
305     {
306     const char *bn = ezxml_txt(ezxml_child(ab, "AngleBasisName"));
307     int i, n = nabases;
308     char buf[32];
309    
310     if (!*bn) {
311     fputs("Internal error - missing <AngleBasisName>!\n", stderr);
312     return 0;
313     }
314     while (n-- > 0)
315     if (!strcasecmp(bn, abase_list[n].name))
316     break;
317     if (n < 0) {
318     fprintf(stderr, "Internal error - unknown angle basis '%s'", bn);
319     return 0;
320     }
321     for (i = 0; abase_list[n].lat[i].nphis; i++) {
322     ezxml_t tb, abb = ezxml_add_child(ab, "AngleBasisBlock",
323     strlen(ab->txt));
324     sprintf(buf, "%g", i ?
325     .5*(abase_list[n].lat[i].tmin + abase_list[n].lat[i+1].tmin) :
326     .0);
327 greg 2.4 ezxml_add_txt(abb, "\n\t\t\t\t");
328 greg 2.1 ezxml_set_txt_d(ezxml_add_child(abb,"Theta",strlen(abb->txt)), buf);
329     sprintf(buf, "%d", abase_list[n].lat[i].nphis);
330 greg 2.4 ezxml_add_txt(abb, "\n\t\t\t\t");
331 greg 2.1 ezxml_set_txt_d(ezxml_add_child(abb,"nPhis",strlen(abb->txt)), buf);
332 greg 2.4 ezxml_add_txt(abb, "\n\t\t\t\t");
333 greg 2.1 tb = ezxml_add_child(abb, "ThetaBounds", strlen(abb->txt));
334 greg 2.4 ezxml_add_txt(tb, "\n\t\t\t\t\t");
335 greg 2.1 sprintf(buf, "%g", abase_list[n].lat[i].tmin);
336 greg 2.4 ezxml_set_txt_d(ezxml_add_child(tb,"LowerTheta",strlen(tb->txt)), buf);
337     ezxml_add_txt(tb, "\n\t\t\t\t\t");
338 greg 2.1 sprintf(buf, "%g", abase_list[n].lat[i+1].tmin);
339 greg 2.4 ezxml_set_txt_d(ezxml_add_child(tb,"UpperTheta",strlen(tb->txt)), buf);
340     ezxml_add_txt(tb, "\n\t\t\t\t");
341     ezxml_add_txt(abb, "\n\t\t\t");
342     ezxml_add_txt(ab, "\n\t\t\t");
343 greg 2.1 }
344     return 1;
345     }
346    
347     /* Determine our angle basis from current tags */
348     static int
349     determine_angle_basis(const char *fn, ezxml_t wtl)
350     {
351     const char *ids;
352     int i;
353    
354     wtl = ezxml_child(wtl, "DataDefinition");
355     if (wtl == NULL)
356     return -1;
357     ids = ezxml_txt(ezxml_child(wtl, "IncidentDataStructure"));
358 greg 2.4 if (!ids[0])
359 greg 2.1 return -1;
360     for (i = 0; i < ABend; i++) {
361     ezxml_t parsed = ezxml_parse_str(basis_definition[i],
362     strlen(basis_definition[i]));
363     int match = 0;
364     if (!strcmp(ids, ezxml_txt(ezxml_child(parsed,
365     "IncidentDataStructure")))) {
366     const char *abn0 = ezxml_txt(
367     ezxml_child(ezxml_child(wtl,
368     "AngleBasis"), "AngleBasisName"));
369     const char *abn1 = ezxml_txt(
370     ezxml_child(ezxml_child(parsed,
371     "AngleBasis"), "AngleBasisName"));
372     match = !strcmp(abn0, abn1);
373     }
374     ezxml_free(parsed);
375     if (match)
376     return i;
377     }
378     return -1;
379     }
380    
381     /* Write out BSDF data block with surrounding tags */
382     static int
383     writeBSDFblock(const char *caller, struct s_dfile *df)
384     {
385     char *cp;
386    
387     puts("\t<WavelengthData>");
388     puts("\t\t<LayerNumber>System</LayerNumber>");
389     switch (df->spectrum) {
390     case DSvisible:
391     puts("\t\t<Wavelength unit=\"Integral\">Visible</Wavelength>");
392     puts("\t\tSourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
393     puts("\t\t<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum>");
394     break;
395     case DSxbar31:
396     puts("\t\t<Wavelength unit=\"Integral\">CIE-X</Wavelength>");
397     puts("\t\tSourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
398     puts("\t\t<DetectorSpectrum>ASTM E308 1931 X.dsp</DetectorSpectrum>");
399     break;
400     case DSzbar31:
401     puts("\t\t<Wavelength unit=\"Integral\">CIE-Z</Wavelength>");
402     puts("\t\tSourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
403     puts("\t\t<DetectorSpectrum>ASTM E308 1931 Z.dsp</DetectorSpectrum>");
404     break;
405     case DSsolar:
406     puts("\t\t<Wavelength unit=\"Integral\">Solar</Wavelength>");
407     puts("\t\tSourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
408     puts("\t\t<DetectorSpectrum>None</DetectorSpectrum>");
409     break;
410     case DSnir:
411     puts("\t\t<Wavelength unit=\"Integral\">NIR</Wavelength>");
412     puts("\t\tSourceSpectrum>PLACE_HOLDER</SourceSpectrum>");
413     puts("\t\t<DetectorSpectrum>PLACE_HOLDER</DetectorSpectrum>");
414     break;
415     default:
416     cp = strrchr(spectr_file[df->spectrum], '.');
417     if (cp != NULL)
418     *cp = '\0';
419     printf("\t\t<Wavelength unit=\"Integral\">%s</Wavelength>\n",
420     spectr_file[df->spectrum]);
421     if (cp != NULL)
422     *cp = '.';
423     puts("\t\tSourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
424     printf("\t\t<DetectorSpectrum>%s</DetectorSpectrum>\n",
425     spectr_file[df->spectrum]);
426     break;
427     }
428     puts("\t\t<WavelengthDataBlock>");
429     fputs("\t\t\t<WavelengthDataDirection>", stdout);
430     switch (df->type) {
431     case DTtransForward:
432     fputs("Transmission Front", stdout);
433     break;
434     case DTtransBackward:
435     fputs("Transmission Back", stdout);
436     break;
437     case DTreflForward:
438     fputs("Reflection Front", stdout);
439     break;
440     case DTreflBackward:
441     fputs("Reflection Back", stdout);
442     break;
443     default:
444     fprintf(stderr, "%s: internal - bad BSDF type (%d)\n", caller, df->type);
445     return 0;
446     }
447     puts("</WavelengthDataDirection>");
448     switch (angle_basis) {
449     case ABklemsFull:
450     puts("\t\t\t<ColumnAngleBasis>LBNL/Klems Full</ColumnAngleBasis>");
451     break;
452     case ABklemsHalf:
453     puts("\t\t\t<ColumnAngleBasis>LBNL/Klems Half</ColumnAngleBasis>");
454     break;
455     case ABklemsQuarter:
456     puts("\t\t\t<ColumnAngleBasis>LBNL/Klems Quarter</ColumnAngleBasis>");
457     break;
458     case ABtensorTree3:
459     case ABtensorTree4:
460     puts("\t\t\t<AngleBasis>LBNL/Shirley-Chiu</AngleBasis>");
461     break;
462     default:
463     fprintf(stderr, "%s: bad angle basis (%d)\n", caller, angle_basis);
464     return 0;
465     }
466     puts("\t\t\t<ScatteringDataType>BTDF</ScatteringDataType>");
467     puts("\t\t\t<ScatteringData>");
468     fflush(stdout);
469     if (df->fname == stdin_name) {
470     copy_and_close(fileno(stdin));
471 greg 2.2 } else if (df->fname[0] != '!') {
472 greg 2.1 if (!copy_and_close(open(df->fname, O_RDONLY))) {
473     fprintf(stderr, "%s: error reading from '%s'\n",
474     caller, df->fname);
475     return 0;
476     }
477     } else if (system(df->fname+1)) {
478 greg 2.2 fprintf(stderr, "%s: error running '%s'\n", caller, df->fname);
479 greg 2.1 return 0;
480     }
481     puts("\t\t\t</ScatteringData>");
482     puts("\t\t</WavelengthDataBlock>");
483     puts("\t</WavelengthData>");
484     return 1;
485     }
486    
487     /* Write out XML, interpolating BSDF data block(s) */
488     static int
489     writeBSDF(const char *caller, ezxml_t fl)
490     {
491 greg 2.2 char *xml = ezxml_toxml(fl); /* store XML in string */
492 greg 2.1 int ei, i;
493     /* locate trailer */
494     for (ei = strlen(xml)-strlen("</Layer></Optical></WindowElement>");
495     ei >= 0; ei--)
496     if (!strncmp(xml+ei, "</Layer>", 8))
497     break;
498     if (ei < 0) {
499     fprintf(stderr, "%s: internal - cannot find trailer\n",
500     caller);
501     free(xml);
502     return 0;
503     }
504     fflush(stdout); /* write previous XML info. */
505     if (write(fileno(stdout), xml, ei) != ei) {
506     free(xml);
507     return 0;
508     }
509     for (i = 0; i < ndataf; i++) /* interpolate new data */
510     if (!writeBSDFblock(caller, &data_file[i])) {
511     free(xml);
512     return 0;
513     }
514     fputs(xml+ei, stdout); /* write trailer */
515 greg 2.2 free(xml); /* free string */
516 greg 2.4 fputc('\n', stdout);
517 greg 2.1 return (fflush(stdout) == 0);
518     }
519    
520     /* Insert BSDF data into XML wrapper */
521     static int
522     wrapBSDF(const char *caller)
523     {
524 greg 2.2 const char *xml_path = xml_input;
525 greg 2.1 ezxml_t fl, wtl;
526     /* load previous XML/template */
527 greg 2.2 if (xml_input == stdin_name) {
528     fl = ezxml_parse_fp(stdin);
529     } else if (xml_input[0] == '!') {
530     FILE *pfp = popen(xml_input+1, "r");
531     if (pfp == NULL) {
532     fprintf(stderr, "%s: cannot start process '%s'\n",
533     caller, xml_input);
534     return 0;
535     }
536     fl = ezxml_parse_fp(pfp);
537     if (pclose(pfp)) {
538     fprintf(stderr, "%s: error running '%s'\n",
539     caller, xml_input);
540     return 0;
541     }
542     } else {
543     xml_path = getpath((char *)xml_input, getrlibpath(), R_OK);
544     if (xml_path == NULL) {
545     fprintf(stderr, "%s: cannot find XML file named '%s'\n",
546     caller, xml_input==NULL ? "NULL" : xml_input);
547     return 0;
548     }
549     fl = ezxml_parse_file(xml_path);
550 greg 2.1 }
551     if (fl == NULL) {
552 greg 2.2 fprintf(stderr, "%s: cannot load XML '%s'\n", caller, xml_path);
553 greg 2.1 return 0;
554     }
555     if (ezxml_error(fl)[0]) {
556 greg 2.2 fprintf(stderr, "%s: error in XML '%s': %s\n", caller, xml_path,
557 greg 2.1 ezxml_error(fl));
558     goto failure;
559     }
560     if (strcmp(ezxml_name(fl), top_level_name)) {
561     fprintf(stderr, "%s: top level in XML '%s' not '%s'\n",
562     caller, xml_path, top_level_name);
563     goto failure;
564     }
565     wtl = ezxml_child(fl, "FileType");
566     if (wtl != NULL && strcmp(ezxml_txt(wtl), "BSDF")) {
567     fprintf(stderr, "%s: wrong FileType in XML '%s' (must be 'BSDF')",
568     caller, xml_path);
569     goto failure;
570     }
571     wtl = ezxml_child(ezxml_child(fl, "Optical"), "Layer");
572     if (wtl == NULL) {
573     fprintf(stderr, "%s: no optical layers in XML '%s'",
574     caller, xml_path);
575     goto failure;
576     }
577     /* make material assignments */
578 greg 2.3 if (!mat_assignments(caller, xml_path, wtl))
579 greg 2.1 goto failure;
580     if (mgf_geometry != NULL) { /* add geometry if specified */
581     ezxml_t geom = ezxml_child(wtl, "Geometry");
582     if (geom == NULL)
583 greg 2.3 geom = ezxml_add_child(wtl, "Geometry", strlen(wtl->txt));
584 greg 2.1 ezxml_set_attr(geom, "format", "MGF");
585     geom = ezxml_child(geom, "MGFblock");
586     if (geom == NULL) {
587     geom = ezxml_child(wtl, "Geometry");
588 greg 2.3 geom = ezxml_add_child(geom, "MGFblock", 0);
589 greg 2.1 }
590     ezxml_set_attr(geom, "unit", attr_unit);
591     ezxml_set_txt(geom, input2str(mgf_geometry));
592     if (geom->txt[0])
593     ezxml_set_flag(geom, EZXML_TXTM);
594     }
595     /* check basis */
596     if (angle_basis != ABdefault) {
597 greg 2.4 size_t offset = 0;
598 greg 2.1 ezxml_t ab, dd = ezxml_child(wtl, "DataDefinition");
599 greg 2.4 if (dd != NULL) {
600     offset = dd->off;
601 greg 2.5 if (dd->child != NULL)
602     fprintf(stderr,
603 greg 2.1 "%s: warning - replacing existing <DataDefinition> in '%s'\n",
604     caller, xml_path);
605 greg 2.4 ezxml_remove(dd);
606     } else
607     offset = strlen(wtl->txt);
608     dd = ezxml_insert(ezxml_parse_str(basis_definition[angle_basis],
609 greg 2.1 strlen(basis_definition[angle_basis])),
610 greg 2.4 wtl, offset);
611 greg 2.1 if ((ab = ezxml_child(dd, "AngleBasis")) != NULL &&
612     !finish_angle_basis(ab))
613     goto failure;
614     } else if ((angle_basis = determine_angle_basis(xml_path, wtl)) < 0) {
615     fprintf(stderr, "%s: need -a option to set angle basis\n",
616     caller);
617     goto failure;
618     }
619     /* write & add BSDF data blocks */
620     if (!writeBSDF(caller, fl))
621     goto failure;
622     ezxml_free(fl); /* all done */
623     return 1;
624     failure:
625     ezxml_free(fl);
626     return 0;
627     }
628    
629     /* Report usage and exit */
630     static void
631     UsageExit(const char *pname)
632     {
633     fputs("Usage: ", stderr);
634     fputs(pname, stderr);
635 greg 2.2 fputs(" [-W][-a {kf|kh|kq|t3|t4}][-u unit][-g geom][-f 'x=string;y=string']", stderr);
636     fputs(" [-s spectr][-tb inp][-tf inp][-rb inp][-rf inp]", stderr);
637     fputs(" [input.xml]\n", stderr);
638 greg 2.1 exit(1);
639     }
640    
641     /* Load XML file and use to wrap BSDF data (or modify fields) */
642     int
643     main(int argc, char *argv[])
644     {
645     int cur_spectrum = DSvisible;
646     int ncust_spec = 0;
647     int used_stdin = 0;
648     int units_set = 0;
649     int i;
650     /* get/check arguments */
651     for (i = 1; i < argc && argv[i][0] == '-'; i++) {
652     switch (argv[i][1]) {
653     case 'W': /* customize for WINDOW 6 output */
654     xml_input = win6_template;
655     continue;
656     case 'f': /* field assignment(s) */
657     if (++i >= argc)
658     UsageExit(argv[0]);
659     if (nfield_assign >= MAXASSIGN) {
660     fprintf(stderr, "%s: too many -f options",
661     argv[0]);
662     return 1;
663     }
664     field_assignment[nfield_assign++] = argv[i];
665     continue;
666     case 'u': /* unit */
667     if (++i >= argc)
668     UsageExit(argv[0]);
669     if (units_set++) {
670     fprintf(stderr, "%s: only one -u option allowed\n",
671     argv[0]);
672     return 1;
673     }
674 greg 2.2 if (strstr(legal_units, argv[i]) == NULL) {
675     fprintf(stderr, "%s: -u unit must be one of (%s)\n",
676 greg 2.1 argv[0], legal_units);
677     return 1;
678     }
679     attr_unit = argv[i];
680     continue;
681     case 'a': /* angle basis */
682     if (++i >= argc)
683     UsageExit(argv[0]);
684     if (angle_basis != ABdefault) {
685     fprintf(stderr, "%s: only one -a option allowed\n",
686     argv[0]);
687     return 1;
688     }
689     if (!strcasecmp(argv[i], "kf"))
690     angle_basis = ABklemsFull;
691     else if (!strcasecmp(argv[i], "kh"))
692     angle_basis = ABklemsHalf;
693     else if (!strcasecmp(argv[i], "kq"))
694     angle_basis = ABklemsQuarter;
695     else if (!strcasecmp(argv[i], "t3"))
696     angle_basis = ABtensorTree3;
697     else if (!strcasecmp(argv[i], "t4"))
698     angle_basis = ABtensorTree4;
699     else
700     UsageExit(argv[0]);
701     continue;
702     case 't': /* transmission */
703     if (i >= argc-1)
704     UsageExit(argv[0]);
705     if (ndataf >= MAXFILES) {
706     fprintf(stderr, "%s: too many data files\n",
707     argv[0]);
708     return 1;
709     }
710     if (!strcmp(argv[i], "-tf"))
711     data_file[ndataf].type = DTtransForward;
712     else if (!strcmp(argv[i], "-tb"))
713     data_file[ndataf].type = DTtransBackward;
714     else
715     UsageExit(argv[0]);
716     if (!strcmp(argv[++i], "-")) {
717     if (used_stdin++) UsageExit(argv[i]);
718     argv[i] = (char *)stdin_name;
719     }
720     data_file[ndataf].fname = argv[i];
721     data_file[ndataf].spectrum = cur_spectrum;
722     ndataf++;
723     continue;
724     case 'r': /* reflection */
725     if (i >= argc-1)
726     UsageExit(argv[0]);
727     if (ndataf >= MAXFILES) {
728     fprintf(stderr, "%s: too many data files\n",
729     argv[0]);
730     return 1;
731     }
732     if (!strcmp(argv[i], "-rf"))
733     data_file[ndataf].type = DTreflForward;
734     else if (!strcmp(argv[i], "-rb"))
735     data_file[ndataf].type = DTreflBackward;
736     else
737     UsageExit(argv[0]);
738     if (!strcmp(argv[++i], "-")) {
739     if (used_stdin++) UsageExit(argv[i]);
740     argv[i] = (char *)stdin_name;
741     }
742     data_file[ndataf].fname = argv[i];
743     data_file[ndataf++].spectrum = cur_spectrum;
744     continue;
745     case 's': /* spectrum name or input file */
746     if (++i >= argc)
747     UsageExit(argv[0]);
748     if (!strcasecmp(argv[i], "Solar"))
749     cur_spectrum = DSsolar;
750     else if (!strcasecmp(argv[i], "Visible") ||
751     !strcasecmp(argv[i], "CIE-Y"))
752     cur_spectrum = DSvisible;
753     else if (!strcasecmp(argv[i], "CIE-X"))
754     cur_spectrum = DSxbar31;
755     else if (!strcasecmp(argv[i], "CIE-Z"))
756     cur_spectrum = DSzbar31;
757     else if (!strcasecmp(argv[i], "NIR"))
758     cur_spectrum = DSnir;
759     else {
760     if (!strcmp(argv[i], "-")) {
761     fprintf(stderr,
762     "%s: cannot read spectra from stdin",
763     argv[0]);
764     return 1;
765     }
766     cur_spectrum = ncust_spec;
767     spectr_file[ncust_spec++] = argv[i];
768     }
769     continue;
770     case 'g': /* MGF geometry file */
771     if (i >= argc-1)
772     UsageExit(argv[0]);
773     if (mgf_geometry != NULL) {
774     fprintf(stderr, "%s: only one -g option allowed\n",
775     argv[0]);
776     return 1;
777     }
778     if (!strcmp(argv[++i], "-")) {
779     if (used_stdin++) UsageExit(argv[i]);
780     argv[i] = (char *)stdin_name;
781     }
782     mgf_geometry = argv[i];
783     continue;
784     case '\0': /* input XML from stdin */
785     break;
786     default:
787     UsageExit(argv[0]);
788     break;
789     }
790     break;
791     }
792     doneOptions: /* get XML input */
793     if (i >= argc) {
794     if (xml_input == NULL)
795     xml_input = def_template;
796     } else if ((i < argc-1) | (xml_input != NULL)) {
797     fprintf(stderr, "%s: only one XML input allowed\n", argv[0]);
798     UsageExit(argv[0]);
799     } else if (!strcmp(argv[i], "-")) {
800     if (used_stdin++) UsageExit(argv[0]);
801     xml_input = stdin_name;
802     } else {
803     xml_input = argv[i];
804     }
805     if ((xml_input == win6_template) & (angle_basis == ABdefault))
806     angle_basis = ABklemsFull;
807     /* wrap it! */
808     return !wrapBSDF(argv[0]);
809     }