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root/radiance/ray/src/util/wrapBSDF.c
Revision: 2.21
Committed: Fri Oct 14 00:54:22 2016 UTC (6 years, 1 month ago) by greg
Content type: text/plain
Branch: MAIN
Changes since 2.20: +3 -12 lines
Log Message:
Fixed regression in genBSDF affecting Klems normalization

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: wrapBSDF.c,v 2.20 2016/03/06 01:13:18 schorsch Exp $";
3 #endif
4 /*
5 * Wrap BSDF data in valid WINDOW XML file
6 *
7 * G. Ward February 2015
8 */
9
10 #include "platform.h"
11 #include <ctype.h>
12 #include "rtio.h"
13 #include "paths.h"
14 #include "ezxml.h"
15 #include "bsdf.h"
16 #include "bsdf_m.h"
17 /* XML template file names */
18 const char def_template[] = "minimalBSDFt.xml";
19 const char win6_template[] = "WINDOW6BSDFt.xml";
20
21 const char stdin_name[] = "<stdin>";
22 /* input files (can be stdin_name) */
23 const char *xml_input = NULL;
24 /* unit for materials & geometry */
25 const char *attr_unit = "meter";
26 const char legal_units[] = "meter|foot|inch|centimeter|millimeter";
27 /* system materials & geometry */
28 const char *mgf_geometry = NULL;
29 /* comment list */
30 #define MAXCOMM 30
31 const char *commlist[MAXCOMM];
32 int ncomm = 0;
33 /* angle bases */
34 enum { ABdefault=-1, ABklemsFull=0, ABklemsHalf, ABklemsQuarter,
35 ABtensorTree3, ABtensorTree4, ABend };
36
37 int angle_basis = ABdefault;
38
39 int correct_solid_angle = 0;
40
41 const char *klems_basis_name[] = {
42 "LBNL/Klems Full",
43 "LBNL/Klems Half",
44 "LBNL/Klems Quarter",
45 };
46 /* field IDs and nicknames */
47 struct s_fieldID {
48 char nickName[4];
49 short has_unit;
50 short win_need;
51 const char *fullName;
52 } XMLfieldID[] = {
53 {"m", 0, 1, "Manufacturer"},
54 {"n", 0, 1, "Name"},
55 {"c", 0, 0, "ThermalConductivity"},
56 {"ef", 0, 0, "EmissivityFront"},
57 {"eb", 0, 0, "EmissivityBack"},
58 {"tir", 0, 0, "TIR"},
59 {"eo", 0, 0, "EffectiveOpennessFraction"},
60 {"t", 1, 1, "Thickness"},
61 {"h", 1, 0, "Height"},
62 {"w", 1, 0, "Width"},
63 {"\0", 0, 0, NULL} /* terminator */
64 };
65 /* field assignments */
66 #define MAXASSIGN 12
67 const char *field_assignment[MAXASSIGN];
68 int nfield_assign = 0;
69 #define FASEP ';'
70 /* data file(s) & spectra */
71 enum { DTtransForward, DTtransBackward, DTreflForward, DTreflBackward };
72
73 enum { DSsolar=-1, DSnir=-2, DSxbar31=-3, DSvisible=-4, DSzbar31=-5,
74 DSuprime=-6, DSvprime=-7 };
75
76 #define MAXFILES 20
77
78 struct s_dfile {
79 const char *fname; /* input data file name */
80 short type; /* BSDF data type */
81 short spectrum; /* BSDF sensor spectrum */
82 } data_file[MAXFILES];
83
84 int ndataf = 0; /* number of data files */
85
86 int unlink_datafiles = 0; /* unlink data files when done */
87
88 const char *spectr_file[MAXFILES]; /* custom spectral curve input */
89
90 const char top_level_name[] = "WindowElement";
91
92 static char basis_definition[][256] = {
93
94 "\t<DataDefinition>\n"
95 "\t\t<IncidentDataStructure>Columns</IncidentDataStructure>\n"
96 "\t\t<AngleBasis>\n"
97 "\t\t\t<AngleBasisName>LBNL/Klems Full</AngleBasisName>\n"
98 "\t\t\t</AngleBasis>\n"
99 "\t</DataDefinition>\n",
100
101 "\t<DataDefinition>\n"
102 "\t\t<IncidentDataStructure>Columns</IncidentDataStructure>\n"
103 "\t\t<AngleBasis>\n"
104 "\t\t\t<AngleBasisName>LBNL/Klems Half</AngleBasisName>\n"
105 "\t\t\t</AngleBasis>\n"
106 "\t</DataDefinition>\n",
107
108 "\t<DataDefinition>\n"
109 "\t\t<IncidentDataStructure>Columns</IncidentDataStructure>\n"
110 "\t\t<AngleBasis>\n"
111 "\t\t\t<AngleBasisName>LBNL/Klems Quarter</AngleBasisName>\n"
112 "\t\t\t</AngleBasis>\n"
113 "\t</DataDefinition>\n",
114
115 "\t<DataDefinition>\n"
116 "\t\t<IncidentDataStructure>TensorTree3</IncidentDataStructure>\n"
117 "\t</DataDefinition>\n",
118
119 "\t<DataDefinition>\n"
120 "\t\t<IncidentDataStructure>TensorTree4</IncidentDataStructure>\n"
121 "\t</DataDefinition>\n",
122 };
123
124 /* Copy data from file descriptor to stdout and close */
125 static int
126 copy_and_close(int fd)
127 {
128 int ok = 1;
129 char buf[8192];
130 int n;
131
132 if (fd < 0)
133 return 0;
134 while ((n = read(fd, buf, sizeof(buf))) > 0)
135 if (write(fileno(stdout), buf, n) != n) {
136 ok = 0;
137 break;
138 }
139 ok &= (n == 0);
140 close(fd);
141 return ok;
142 }
143
144 /* Allocate and assign string from file or stream */
145 static char *
146 input2str(const char *inpspec)
147 {
148 FILE *fp = NULL;
149 char *str;
150 int len, pos, n;
151
152 if (inpspec == NULL || !*inpspec)
153 return "";
154 if (inpspec == stdin_name) { /* read from stdin */
155 fp = stdin;
156 } else if (inpspec[0] == '!') { /* read from command */
157 fp = popen(inpspec+1, "r");
158 if (fp == NULL) {
159 fprintf(stderr, "Cannot start process '%s'\n",
160 inpspec);
161 return "";
162 }
163 } else { /* else load file */
164 int fd = open(inpspec, O_RDONLY);
165 if (fd < 0) {
166 fprintf(stderr, "%s: cannot open\n", inpspec);
167 return "";
168 }
169 #if !defined(_WIN32) && !defined(_WIN64)
170 /* XXX somehow broken on Windows */
171 len = lseek(fd, 0L, SEEK_END);
172 if (len > 0) {
173 lseek(fd, 0L, SEEK_SET);
174 str = (char *)malloc(len+1);
175 if (str == NULL) {
176 close(fd);
177 goto memerr;
178 }
179 if (read(fd, str, len) != len) {
180 fprintf(stderr, "%s: read error\n", inpspec);
181 free(str);
182 close(fd);
183 return "";
184 }
185 str[len] = '\0';
186 close(fd);
187 return str;
188 }
189 #endif
190 fp = fdopen(fd, "r"); /* not a regular file */
191 }
192 /* reading from stream */
193 str = (char *)malloc((len=8192)+1);
194 if (str == NULL)
195 goto memerr;
196 pos = 0;
197 while ((n = read(fileno(fp), str+pos, len-pos)) > 0)
198 if ((pos += n) >= len) { /* need more space? */
199 str = (char *)realloc(str, (len += len>>2) + 1);
200 if (str == NULL)
201 goto memerr;
202 }
203 if (n < 0) {
204 fprintf(stderr, "%s: read error\n", inpspec);
205 free(str);
206 str = "";
207 } else { /* tidy up result */
208 str[pos] = '\0';
209 str = (char *)realloc(str, (len=pos)+1);
210 if (str == NULL)
211 goto memerr;
212 }
213 if (inpspec[0] != '!')
214 fclose(fp);
215 else if (pclose(fp))
216 fprintf(stderr, "Error running command '%s'\n", inpspec);
217 return str;
218 memerr:
219 fprintf(stderr, "%s: error allocating memory\n", inpspec);
220 if (fp != NULL)
221 (inpspec[0] == '!') ? pclose(fp) : fclose(fp);
222 return "";
223 }
224
225 /* Make material assignments in field_assignment to XML fields */
226 static int
227 mat_assignments(const char *caller, const char *fn, ezxml_t wtl)
228 {
229 int i;
230
231 wtl = ezxml_child(wtl, "Material");
232 if (wtl == NULL) {
233 fprintf(stderr, "%s: missing <Material> tag\n", fn);
234 return 0;
235 }
236 for (i = 0; i < nfield_assign; i++) {
237 const char *fnext = field_assignment[i];
238 for ( ; ; ) {
239 int added = 0;
240 ezxml_t fld;
241 char sbuf[512];
242 int j;
243
244 while (isspace(*fnext))
245 ++fnext;
246 if (!*fnext)
247 break;
248 for (j = 0; *fnext != '=' && !isspace(*fnext); ) {
249 if (!*fnext | (*fnext == FASEP) |
250 (j >= sizeof(sbuf)-1)) {
251 fprintf(stderr,
252 "%s: bad tag name in assignment '%s'\n",
253 caller, field_assignment[i]);
254 return 0;
255 }
256 sbuf[j++] = *fnext++;
257 }
258 sbuf[j] = '\0'; /* check known field */
259 for (j = 0; XMLfieldID[j].nickName[0]; j++)
260 if (!strcasecmp(sbuf, XMLfieldID[j].nickName) ||
261 !strcasecmp(sbuf, XMLfieldID[j].fullName)) {
262 strcpy(sbuf, XMLfieldID[j].fullName);
263 break;
264 }
265 /* check if tag exists */
266 fld = ezxml_child(wtl, sbuf);
267 if (fld == NULL) { /* otherwise, create one */
268 if (!XMLfieldID[j].nickName[0])
269 fprintf(stderr,
270 "%s: warning - adding tag <%s>\n",
271 fn, sbuf);
272 ezxml_add_txt(wtl, "\t");
273 fld = ezxml_add_child_d(wtl, sbuf, strlen(wtl->txt));
274 ++added;
275 }
276 if (XMLfieldID[j].has_unit)
277 ezxml_set_attr(fld, "unit", attr_unit);
278 XMLfieldID[j].win_need = 0;
279 while (isspace(*fnext))
280 ++fnext;
281 if (*fnext++ != '=') {
282 fprintf(stderr,
283 "%s: missing '=' in assignment '%s'\n",
284 caller, field_assignment[i]);
285 return 0;
286 }
287 for (j = 0; *fnext && *fnext != FASEP; ) {
288 if (j >= sizeof(sbuf)-1) {
289 fprintf(stderr,
290 "%s: field too long in '%s'\n",
291 caller, field_assignment[i]);
292 return 0;
293 }
294 sbuf[j++] = *fnext++;
295 }
296 sbuf[j] = '\0';
297 ezxml_set_txt_d(fld, sbuf);
298 if (added)
299 ezxml_add_txt(wtl, "\n\t");
300 fnext += (*fnext == FASEP);
301 }
302 }
303 /* check required WINDOW settings */
304 if (xml_input == win6_template)
305 for (i = 0; XMLfieldID[i].nickName[0]; i++)
306 if (XMLfieldID[i].win_need &&
307 !ezxml_txt(ezxml_child(wtl,XMLfieldID[i].fullName))[0])
308 fprintf(stderr,
309 "%s: warning - missing '%s' assignment for WINDOW <%s>\n",
310 caller, XMLfieldID[i].nickName,
311 XMLfieldID[i].fullName);
312 return 1;
313 }
314
315 /* Complete angle basis specification */
316 static int
317 finish_angle_basis(ezxml_t ab)
318 {
319 const char *bn = ezxml_txt(ezxml_child(ab, "AngleBasisName"));
320 int i, n = nabases;
321 char buf[32];
322
323 if (!*bn) {
324 fputs("Internal error - missing <AngleBasisName>!\n", stderr);
325 return 0;
326 }
327 while (n-- > 0)
328 if (!strcasecmp(bn, abase_list[n].name))
329 break;
330 if (n < 0) {
331 fprintf(stderr, "Internal error - unknown angle basis '%s'", bn);
332 return 0;
333 }
334 for (i = 0; abase_list[n].lat[i].nphis; i++) {
335 ezxml_t tb, abb = ezxml_add_child(ab, "AngleBasisBlock",
336 strlen(ab->txt));
337 sprintf(buf, "%g", i ?
338 .5*(abase_list[n].lat[i].tmin + abase_list[n].lat[i+1].tmin) :
339 .0);
340 ezxml_add_txt(abb, "\n\t\t\t\t");
341 ezxml_set_txt_d(ezxml_add_child(abb,"Theta",strlen(abb->txt)), buf);
342 sprintf(buf, "%d", abase_list[n].lat[i].nphis);
343 ezxml_add_txt(abb, "\n\t\t\t\t");
344 ezxml_set_txt_d(ezxml_add_child(abb,"nPhis",strlen(abb->txt)), buf);
345 ezxml_add_txt(abb, "\n\t\t\t\t");
346 tb = ezxml_add_child(abb, "ThetaBounds", strlen(abb->txt));
347 ezxml_add_txt(tb, "\n\t\t\t\t\t");
348 sprintf(buf, "%g", abase_list[n].lat[i].tmin);
349 ezxml_set_txt_d(ezxml_add_child(tb,"LowerTheta",strlen(tb->txt)), buf);
350 ezxml_add_txt(tb, "\n\t\t\t\t\t");
351 sprintf(buf, "%g", abase_list[n].lat[i+1].tmin);
352 ezxml_set_txt_d(ezxml_add_child(tb,"UpperTheta",strlen(tb->txt)), buf);
353 ezxml_add_txt(tb, "\n\t\t\t\t");
354 ezxml_add_txt(abb, "\n\t\t\t");
355 ezxml_add_txt(ab, "\n\t\t\t");
356 }
357 return 1;
358 }
359
360 /* Determine our angle basis from current tags */
361 static int
362 determine_angle_basis(const char *fn, ezxml_t wtl)
363 {
364 const char *ids;
365 int i;
366
367 wtl = ezxml_child(wtl, "DataDefinition");
368 if (wtl == NULL)
369 return -1;
370 ids = ezxml_txt(ezxml_child(wtl, "IncidentDataStructure"));
371 if (!ids[0])
372 return -1;
373 for (i = 0; i < ABend; i++) {
374 ezxml_t parsed = ezxml_parse_str(basis_definition[i],
375 strlen(basis_definition[i]));
376 int match = 0;
377 if (!strcmp(ids, ezxml_txt(ezxml_child(parsed,
378 "IncidentDataStructure")))) {
379 const char *abn0 = ezxml_txt(
380 ezxml_child(ezxml_child(wtl,
381 "AngleBasis"), "AngleBasisName"));
382 const char *abn1 = ezxml_txt(
383 ezxml_child(ezxml_child(parsed,
384 "AngleBasis"), "AngleBasisName"));
385 match = !strcmp(abn0, abn1);
386 }
387 ezxml_free(parsed);
388 if (match)
389 return i;
390 }
391 return -1;
392 }
393
394 /* Filter Klems angle basis, factoring out incident projected solid angle */
395 static int
396 filter_klems_matrix(FILE *fp)
397 {
398 const char *bn = klems_basis_name[angle_basis];
399 int i, j, n = nabases;
400 /* get angle basis */
401 while (n-- > 0)
402 if (!strcasecmp(bn, abase_list[n].name))
403 break;
404 if (n < 0)
405 return 0;
406 /* read/correct/write matrix */
407 for (i = 0; i < abase_list[n].nangles; i++) {
408 const double corr = 1./io_getohm(i, &abase_list[n]);
409 for (j = 0; j < abase_list[n].nangles; j++) {
410 double d;
411 if (fscanf(fp, "%lf", &d) != 1)
412 return 0;
413 if (d < -1e-3) {
414 fputs("Negative BSDF data!\n", stderr);
415 return 0;
416 }
417 printf(" %.3e", d*corr*(d > 0));
418 }
419 fputc('\n', stdout);
420 }
421 while ((i = getc(fp)) != EOF)
422 if (!isspace(i)) {
423 fputs("Unexpected data past EOF\n", stderr);
424 return 0;
425 }
426 return 1; /* all is good */
427 }
428
429 /* Write out BSDF data block with surrounding tags */
430 static int
431 writeBSDFblock(const char *caller, struct s_dfile *df)
432 {
433 int correct_klems = correct_solid_angle;
434 char *cp;
435
436 puts("\t<WavelengthData>");
437 puts("\t\t<LayerNumber>System</LayerNumber>");
438 switch (df->spectrum) {
439 case DSvisible:
440 puts("\t\t<Wavelength unit=\"Integral\">Visible</Wavelength>");
441 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
442 puts("\t\t<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum>");
443 break;
444 case DSxbar31:
445 puts("\t\t<Wavelength unit=\"Integral\">CIE-X</Wavelength>");
446 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
447 puts("\t\t<DetectorSpectrum>ASTM E308 1931 X.dsp</DetectorSpectrum>");
448 break;
449 case DSzbar31:
450 puts("\t\t<Wavelength unit=\"Integral\">CIE-Z</Wavelength>");
451 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
452 puts("\t\t<DetectorSpectrum>ASTM E308 1931 Z.dsp</DetectorSpectrum>");
453 break;
454 case DSuprime:
455 puts("\t\t<Wavelength unit=\"Integral\">CIE-u</Wavelength>");
456 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
457 break;
458 case DSvprime:
459 puts("\t\t<Wavelength unit=\"Integral\">CIE-v</Wavelength>");
460 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
461 break;
462 case DSsolar:
463 puts("\t\t<Wavelength unit=\"Integral\">Solar</Wavelength>");
464 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
465 puts("\t\t<DetectorSpectrum>None</DetectorSpectrum>");
466 break;
467 case DSnir:
468 puts("\t\t<Wavelength unit=\"Integral\">NIR</Wavelength>");
469 puts("\t\t<SourceSpectrum>PLACE_HOLDER</SourceSpectrum>");
470 puts("\t\t<DetectorSpectrum>PLACE_HOLDER</DetectorSpectrum>");
471 break;
472 default:
473 cp = strrchr(spectr_file[df->spectrum], '.');
474 if (cp != NULL)
475 *cp = '\0';
476 printf("\t\t<Wavelength unit=\"Integral\">%s</Wavelength>\n",
477 spectr_file[df->spectrum]);
478 if (cp != NULL)
479 *cp = '.';
480 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
481 printf("\t\t<DetectorSpectrum>%s</DetectorSpectrum>\n",
482 spectr_file[df->spectrum]);
483 break;
484 }
485 puts("\t\t<WavelengthDataBlock>");
486 fputs("\t\t\t<WavelengthDataDirection>", stdout);
487 switch (df->type) {
488 case DTtransForward:
489 fputs("Transmission Front", stdout);
490 break;
491 case DTtransBackward:
492 fputs("Transmission Back", stdout);
493 break;
494 case DTreflForward:
495 fputs("Reflection Front", stdout);
496 break;
497 case DTreflBackward:
498 fputs("Reflection Back", stdout);
499 break;
500 default:
501 fprintf(stderr, "%s: internal - bad BSDF type (%d)\n", caller, df->type);
502 return 0;
503 }
504 puts("</WavelengthDataDirection>");
505 switch (angle_basis) {
506 case ABklemsFull:
507 case ABklemsHalf:
508 case ABklemsQuarter:
509 fputs("\t\t\t<ColumnAngleBasis>", stdout);
510 fputs(klems_basis_name[angle_basis], stdout);
511 puts("</ColumnAngleBasis>");
512 fputs("\t\t\t<RowAngleBasis>", stdout);
513 fputs(klems_basis_name[angle_basis], stdout);
514 puts("</RowAngleBasis>");
515 break;
516 case ABtensorTree3:
517 case ABtensorTree4:
518 puts("\t\t\t<AngleBasis>LBNL/Shirley-Chiu</AngleBasis>");
519 correct_klems = 0;
520 break;
521 default:
522 fprintf(stderr, "%s: bad angle basis (%d)\n", caller, angle_basis);
523 return 0;
524 }
525 puts("\t\t\t<ScatteringDataType>BTDF</ScatteringDataType>");
526 puts("\t\t\t<ScatteringData>");
527 fflush(stdout);
528 if (correct_klems) { /* correct Klems matrix data */
529 FILE *fp = stdin;
530 if (df->fname[0] == '!')
531 fp = popen(df->fname+1, "r");
532 else if (df->fname != stdin_name)
533 fp = fopen(df->fname, "r");
534 if (fp == NULL) {
535 fprintf(stderr, "%s: cannot open '%s'\n",
536 caller, df->fname);
537 return 0;
538 }
539 if (!filter_klems_matrix(fp)) {
540 fprintf(stderr, "%s: Klems data error from '%s'\n",
541 caller, df->fname);
542 return 0;
543 }
544 if (df->fname[0] != '!') {
545 fclose(fp);
546 } else if (pclose(fp)) {
547 fprintf(stderr, "%s: error running '%s'\n",
548 caller, df->fname);
549 return 0;
550 }
551 } else if (df->fname == stdin_name) {
552 copy_and_close(fileno(stdin));
553 } else if (df->fname[0] != '!') {
554 if (!copy_and_close(open(df->fname, O_RDONLY))) {
555 fprintf(stderr, "%s: error reading from '%s'\n",
556 caller, df->fname);
557 return 0;
558 }
559 } else if (system(df->fname+1)) {
560 fprintf(stderr, "%s: error running '%s'\n", caller, df->fname);
561 return 0;
562 }
563 puts("\t\t\t</ScatteringData>");
564 puts("\t\t</WavelengthDataBlock>");
565 puts("\t</WavelengthData>");
566 return 1;
567 }
568
569 /* Write out XML, interpolating BSDF data block(s) */
570 static int
571 writeBSDF(const char *caller, ezxml_t fl)
572 {
573 char *xml = ezxml_toxml(fl); /* store XML in string */
574 int ei, i;
575 /* locate trailer */
576 for (ei = strlen(xml)-strlen("</Layer></Optical></WindowElement>");
577 ei >= 0; ei--)
578 if (!strncmp(xml+ei, "</Layer>", 8))
579 break;
580 if (ei < 0) {
581 fprintf(stderr, "%s: internal - cannot find trailer\n",
582 caller);
583 free(xml);
584 return 0;
585 }
586 puts("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
587 for (i = 0; i < ncomm; i++)
588 printf("<!-- %s -->\n", commlist[i]);
589 fflush(stdout); /* write previous XML info. */
590 if (write(fileno(stdout), xml, ei) != ei) {
591 free(xml);
592 return 0;
593 }
594 for (i = 0; i < ndataf; i++) /* interpolate new data */
595 if (!writeBSDFblock(caller, &data_file[i])) {
596 free(xml);
597 return 0;
598 }
599 fputs(xml+ei, stdout); /* write trailer */
600 free(xml); /* free string */
601 fputc('\n', stdout);
602 if (fflush(stdout) != 0)
603 return 0;
604 /* unlink data files if req. */
605 for (i = ndataf*(unlink_datafiles != 0); i--; )
606 if (data_file[i].fname != stdin_name &&
607 data_file[i].fname[0] != '!')
608 unlink(data_file[i].fname);
609 if (unlink_datafiles > 1 && mgf_geometry != NULL &&
610 mgf_geometry != stdin_name &&
611 mgf_geometry[0] != '!')
612 unlink(mgf_geometry);
613 return 1;
614 }
615
616 /* Insert BSDF data into XML wrapper */
617 static int
618 wrapBSDF(const char *caller)
619 {
620 const char *xml_path = xml_input;
621 ezxml_t fl, wtl;
622 /* load previous XML/template */
623 if (xml_input == stdin_name) {
624 fl = ezxml_parse_fp(stdin);
625 } else if (xml_input[0] == '!') {
626 FILE *pfp = popen(xml_input+1, "r");
627 if (pfp == NULL) {
628 fprintf(stderr, "%s: cannot start process '%s'\n",
629 caller, xml_input);
630 return 0;
631 }
632 fl = ezxml_parse_fp(pfp);
633 if (pclose(pfp)) {
634 fprintf(stderr, "%s: error running '%s'\n",
635 caller, xml_input);
636 return 0;
637 }
638 } else {
639 xml_path = getpath((char *)xml_input, getrlibpath(), R_OK);
640 if (xml_path == NULL) {
641 fprintf(stderr, "%s: cannot find XML file named '%s'\n",
642 caller, xml_input==NULL ? "NULL" : xml_input);
643 return 0;
644 }
645 fl = ezxml_parse_file(xml_path);
646 }
647 if (fl == NULL) {
648 fprintf(stderr, "%s: cannot load XML '%s'\n", caller, xml_path);
649 return 0;
650 }
651 if (ezxml_error(fl)[0]) {
652 fprintf(stderr, "%s: error in XML '%s': %s\n", caller, xml_path,
653 ezxml_error(fl));
654 goto failure;
655 }
656 if (strcmp(ezxml_name(fl), top_level_name)) {
657 fprintf(stderr, "%s: top level in XML '%s' not '%s'\n",
658 caller, xml_path, top_level_name);
659 goto failure;
660 }
661 wtl = ezxml_child(fl, "FileType");
662 if (wtl != NULL && strcmp(ezxml_txt(wtl), "BSDF")) {
663 fprintf(stderr, "%s: wrong FileType in XML '%s' (must be 'BSDF')",
664 caller, xml_path);
665 goto failure;
666 }
667 wtl = ezxml_child(ezxml_child(fl, "Optical"), "Layer");
668 if (wtl == NULL) {
669 fprintf(stderr, "%s: no optical layers in XML '%s'",
670 caller, xml_path);
671 goto failure;
672 }
673 /* make material assignments */
674 if (!mat_assignments(caller, xml_path, wtl))
675 goto failure;
676 if (mgf_geometry != NULL) { /* add geometry if specified */
677 ezxml_t geom = ezxml_child(wtl, "Geometry");
678 if (geom == NULL)
679 geom = ezxml_add_child(wtl, "Geometry", strlen(wtl->txt));
680 ezxml_set_attr(geom, "format", "MGF");
681 geom = ezxml_child(geom, "MGFblock");
682 if (geom == NULL) {
683 geom = ezxml_child(wtl, "Geometry");
684 geom = ezxml_add_child(geom, "MGFblock", 0);
685 }
686 ezxml_set_attr(geom, "unit", attr_unit);
687 ezxml_set_txt(geom, input2str(mgf_geometry));
688 if (geom->txt[0])
689 ezxml_set_flag(geom, EZXML_TXTM);
690 }
691 /* check basis */
692 if (angle_basis != ABdefault) {
693 size_t offset = 0;
694 ezxml_t ab, dd = ezxml_child(wtl, "DataDefinition");
695 if (dd != NULL) {
696 offset = dd->off;
697 if (dd->child != NULL)
698 fprintf(stderr,
699 "%s: warning - replacing existing <DataDefinition> in '%s'\n",
700 caller, xml_path);
701 ezxml_remove(dd);
702 } else
703 offset = strlen(wtl->txt);
704 dd = ezxml_insert(ezxml_parse_str(basis_definition[angle_basis],
705 strlen(basis_definition[angle_basis])),
706 wtl, offset);
707 if ((ab = ezxml_child(dd, "AngleBasis")) != NULL &&
708 !finish_angle_basis(ab))
709 goto failure;
710 } else if ((angle_basis = determine_angle_basis(xml_path, wtl)) < 0) {
711 fprintf(stderr, "%s: need -a option to set angle basis\n",
712 caller);
713 goto failure;
714 }
715 /* write & add BSDF data blocks */
716 if (!writeBSDF(caller, fl))
717 goto failure;
718 ezxml_free(fl); /* all done */
719 return 1;
720 failure:
721 ezxml_free(fl);
722 return 0;
723 }
724
725 /* Report usage and exit */
726 static void
727 UsageExit(const char *pname)
728 {
729 fputs("Usage: ", stderr);
730 fputs(pname, stderr);
731 fputs(" [-W][-c][-a {kf|kh|kq|t3|t4}][-u unit][-g geom][-f 'x=string;y=string']", stderr);
732 fputs(" [-s spectr][-tb inp][-tf inp][-rb inp][-rf inp][-C comm]", stderr);
733 fputs(" [input.xml]\n", stderr);
734 exit(1);
735 }
736
737 /* Load XML file and use to wrap BSDF data (or modify fields) */
738 int
739 main(int argc, char *argv[])
740 {
741 int cur_spectrum = DSvisible;
742 int ncust_spec = 0;
743 int used_stdin = 0;
744 int units_set = 0;
745 int i;
746 /* get/check arguments */
747 for (i = 1; i < argc && argv[i][0] == '-'; i++) {
748 switch (argv[i][1]) {
749 case 'W': /* customize for WINDOW 6 output */
750 xml_input = win6_template;
751 continue;
752 case 'f': /* field assignment(s) */
753 if (++i >= argc)
754 UsageExit(argv[0]);
755 if (nfield_assign >= MAXASSIGN) {
756 fprintf(stderr, "%s: too many -f options",
757 argv[0]);
758 return 1;
759 }
760 field_assignment[nfield_assign++] = argv[i];
761 continue;
762 case 'u': /* unit */
763 if (++i >= argc)
764 UsageExit(argv[0]);
765 if (units_set++) {
766 fprintf(stderr, "%s: only one -u option allowed\n",
767 argv[0]);
768 return 1;
769 }
770 if (strstr(legal_units, argv[i]) == NULL) {
771 fprintf(stderr, "%s: -u unit must be one of (%s)\n",
772 argv[0], legal_units);
773 return 1;
774 }
775 attr_unit = argv[i];
776 continue;
777 case 'U': /* unlink data files when done */
778 unlink_datafiles = 1 + (argv[i][2] == 'U');
779 continue;
780 case 'a': /* angle basis */
781 if (++i >= argc)
782 UsageExit(argv[0]);
783 if (angle_basis != ABdefault) {
784 fprintf(stderr, "%s: only one -a option allowed\n",
785 argv[0]);
786 return 1;
787 }
788 if (!strcasecmp(argv[i], "kf"))
789 angle_basis = ABklemsFull;
790 else if (!strcasecmp(argv[i], "kh"))
791 angle_basis = ABklemsHalf;
792 else if (!strcasecmp(argv[i], "kq"))
793 angle_basis = ABklemsQuarter;
794 else if (!strcasecmp(argv[i], "t3"))
795 angle_basis = ABtensorTree3;
796 else if (!strcasecmp(argv[i], "t4"))
797 angle_basis = ABtensorTree4;
798 else
799 UsageExit(argv[0]);
800 continue;
801 case 'c': /* correct solid angle */
802 correct_solid_angle = 1;
803 continue;
804 case 'C': /* comment */
805 if (ncomm >= MAXCOMM) {
806 fprintf(stderr, "%s: too many comments\n",
807 argv[0]);
808 return 1;
809 }
810 if (strchr(argv[++i], '>') != NULL) {
811 fprintf(stderr, "%s: illegal character in comment\n",
812 argv[0]);
813 return 1;
814 }
815 commlist[ncomm++] = argv[i];
816 continue;
817 case 't': /* transmission */
818 if (i >= argc-1)
819 UsageExit(argv[0]);
820 if (ndataf >= MAXFILES) {
821 fprintf(stderr, "%s: too many data files\n",
822 argv[0]);
823 return 1;
824 }
825 if (!strcmp(argv[i], "-tf"))
826 data_file[ndataf].type = DTtransForward;
827 else if (!strcmp(argv[i], "-tb"))
828 data_file[ndataf].type = DTtransBackward;
829 else
830 UsageExit(argv[0]);
831 if (!strcmp(argv[++i], "-")) {
832 if (used_stdin++) UsageExit(argv[i]);
833 argv[i] = (char *)stdin_name;
834 }
835 data_file[ndataf].fname = argv[i];
836 data_file[ndataf].spectrum = cur_spectrum;
837 ndataf++;
838 continue;
839 case 'r': /* reflection */
840 if (i >= argc-1)
841 UsageExit(argv[0]);
842 if (ndataf >= MAXFILES) {
843 fprintf(stderr, "%s: too many data files\n",
844 argv[0]);
845 return 1;
846 }
847 if (!strcmp(argv[i], "-rf"))
848 data_file[ndataf].type = DTreflForward;
849 else if (!strcmp(argv[i], "-rb"))
850 data_file[ndataf].type = DTreflBackward;
851 else
852 UsageExit(argv[0]);
853 if (!strcmp(argv[++i], "-")) {
854 if (used_stdin++) UsageExit(argv[i]);
855 argv[i] = (char *)stdin_name;
856 }
857 data_file[ndataf].fname = argv[i];
858 data_file[ndataf].spectrum = cur_spectrum;
859 ndataf++;
860 continue;
861 case 's': /* spectrum name or input file */
862 if (++i >= argc)
863 UsageExit(argv[0]);
864 if (!strcasecmp(argv[i], "Solar"))
865 cur_spectrum = DSsolar;
866 else if (!strcasecmp(argv[i], "Visible") ||
867 !strcasecmp(argv[i], "CIE-Y"))
868 cur_spectrum = DSvisible;
869 else if (!strcasecmp(argv[i], "CIE-X"))
870 cur_spectrum = DSxbar31;
871 else if (!strcasecmp(argv[i], "CIE-Z"))
872 cur_spectrum = DSzbar31;
873 else if (!strcasecmp(argv[i], "CIE-u"))
874 cur_spectrum = DSuprime;
875 else if (!strcasecmp(argv[i], "CIE-v"))
876 cur_spectrum = DSvprime;
877 else if (!strcasecmp(argv[i], "NIR"))
878 cur_spectrum = DSnir;
879 else {
880 if (!strcmp(argv[i], "-")) {
881 fprintf(stderr,
882 "%s: cannot read spectra from stdin",
883 argv[0]);
884 return 1;
885 }
886 cur_spectrum = ncust_spec;
887 spectr_file[ncust_spec++] = argv[i];
888 }
889 continue;
890 case 'g': /* MGF geometry file */
891 if (i >= argc-1)
892 UsageExit(argv[0]);
893 if (mgf_geometry != NULL) {
894 fprintf(stderr, "%s: only one -g option allowed\n",
895 argv[0]);
896 return 1;
897 }
898 if (!strcmp(argv[++i], "-")) {
899 if (used_stdin++) UsageExit(argv[i]);
900 argv[i] = (char *)stdin_name;
901 }
902 mgf_geometry = argv[i];
903 continue;
904 case '\0': /* input XML from stdin */
905 break;
906 default:
907 UsageExit(argv[0]);
908 break;
909 }
910 break;
911 }
912 doneOptions: /* get XML input */
913 if (i >= argc) {
914 if (xml_input == NULL)
915 xml_input = def_template;
916 } else if ((i < argc-1) | (xml_input != NULL)) {
917 fprintf(stderr, "%s: only one XML input allowed\n", argv[0]);
918 UsageExit(argv[0]);
919 } else if (!strcmp(argv[i], "-")) {
920 if (used_stdin++) UsageExit(argv[0]);
921 xml_input = stdin_name;
922 } else {
923 xml_input = argv[i];
924 }
925 /* wrap it! */
926 return !wrapBSDF(argv[0]);
927 }