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root/radiance/ray/src/util/wrapBSDF.c
Revision: 2.20
Committed: Sun Mar 6 01:13:18 2016 UTC (6 years, 8 months ago) by schorsch
Content type: text/plain
Branch: MAIN
Changes since 2.19: +4 -2 lines
Log Message:
Prepare for SCons build on Win32 and Win64

File Contents

# Content
1 #ifndef lint
2 static const char RCSid[] = "$Id: wrapBSDF.c,v 2.19 2016/02/03 00:22:55 greg 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 #define MAX_COLUMNS 145
399 const char *bn = klems_basis_name[angle_basis];
400 float col_corr[MAX_COLUMNS];
401 int i, j, n = nabases;
402 /* get angle basis */
403 while (n-- > 0)
404 if (!strcasecmp(bn, abase_list[n].name))
405 break;
406 if (n < 0)
407 return 0;
408 if (abase_list[n].nangles > MAX_COLUMNS) {
409 fputs("Internal error - too many Klems columns!\n", stderr);
410 return 0;
411 }
412 /* get correction factors */
413 for (j = abase_list[n].nangles; j--; )
414 col_corr[j] = 1.f / io_getohm(j, &abase_list[n]);
415 /* read/correct/write matrix */
416 for (i = 0; i < abase_list[n].nangles; i++) {
417 for (j = 0; j < abase_list[n].nangles; j++) {
418 double d;
419 if (fscanf(fp, "%lf", &d) != 1)
420 return 0;
421 if (d < -1e-3) {
422 fputs("Negative BSDF data!\n", stderr);
423 return 0;
424 }
425 printf(" %.3e", d*col_corr[j]*(d > 0));
426 }
427 fputc('\n', stdout);
428 }
429 while ((i = getc(fp)) != EOF)
430 if (!isspace(i)) {
431 fputs("Unexpected data past EOF\n", stderr);
432 return 0;
433 }
434 return 1; /* all is good */
435 #undef MAX_COLUMNS
436 }
437
438 /* Write out BSDF data block with surrounding tags */
439 static int
440 writeBSDFblock(const char *caller, struct s_dfile *df)
441 {
442 int correct_klems = correct_solid_angle;
443 char *cp;
444
445 puts("\t<WavelengthData>");
446 puts("\t\t<LayerNumber>System</LayerNumber>");
447 switch (df->spectrum) {
448 case DSvisible:
449 puts("\t\t<Wavelength unit=\"Integral\">Visible</Wavelength>");
450 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
451 puts("\t\t<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum>");
452 break;
453 case DSxbar31:
454 puts("\t\t<Wavelength unit=\"Integral\">CIE-X</Wavelength>");
455 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
456 puts("\t\t<DetectorSpectrum>ASTM E308 1931 X.dsp</DetectorSpectrum>");
457 break;
458 case DSzbar31:
459 puts("\t\t<Wavelength unit=\"Integral\">CIE-Z</Wavelength>");
460 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
461 puts("\t\t<DetectorSpectrum>ASTM E308 1931 Z.dsp</DetectorSpectrum>");
462 break;
463 case DSuprime:
464 puts("\t\t<Wavelength unit=\"Integral\">CIE-u</Wavelength>");
465 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
466 break;
467 case DSvprime:
468 puts("\t\t<Wavelength unit=\"Integral\">CIE-v</Wavelength>");
469 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
470 break;
471 case DSsolar:
472 puts("\t\t<Wavelength unit=\"Integral\">Solar</Wavelength>");
473 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
474 puts("\t\t<DetectorSpectrum>None</DetectorSpectrum>");
475 break;
476 case DSnir:
477 puts("\t\t<Wavelength unit=\"Integral\">NIR</Wavelength>");
478 puts("\t\t<SourceSpectrum>PLACE_HOLDER</SourceSpectrum>");
479 puts("\t\t<DetectorSpectrum>PLACE_HOLDER</DetectorSpectrum>");
480 break;
481 default:
482 cp = strrchr(spectr_file[df->spectrum], '.');
483 if (cp != NULL)
484 *cp = '\0';
485 printf("\t\t<Wavelength unit=\"Integral\">%s</Wavelength>\n",
486 spectr_file[df->spectrum]);
487 if (cp != NULL)
488 *cp = '.';
489 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
490 printf("\t\t<DetectorSpectrum>%s</DetectorSpectrum>\n",
491 spectr_file[df->spectrum]);
492 break;
493 }
494 puts("\t\t<WavelengthDataBlock>");
495 fputs("\t\t\t<WavelengthDataDirection>", stdout);
496 switch (df->type) {
497 case DTtransForward:
498 fputs("Transmission Front", stdout);
499 break;
500 case DTtransBackward:
501 fputs("Transmission Back", stdout);
502 break;
503 case DTreflForward:
504 fputs("Reflection Front", stdout);
505 break;
506 case DTreflBackward:
507 fputs("Reflection Back", stdout);
508 break;
509 default:
510 fprintf(stderr, "%s: internal - bad BSDF type (%d)\n", caller, df->type);
511 return 0;
512 }
513 puts("</WavelengthDataDirection>");
514 switch (angle_basis) {
515 case ABklemsFull:
516 case ABklemsHalf:
517 case ABklemsQuarter:
518 fputs("\t\t\t<ColumnAngleBasis>", stdout);
519 fputs(klems_basis_name[angle_basis], stdout);
520 puts("</ColumnAngleBasis>");
521 fputs("\t\t\t<RowAngleBasis>", stdout);
522 fputs(klems_basis_name[angle_basis], stdout);
523 puts("</RowAngleBasis>");
524 break;
525 case ABtensorTree3:
526 case ABtensorTree4:
527 puts("\t\t\t<AngleBasis>LBNL/Shirley-Chiu</AngleBasis>");
528 correct_klems = 0;
529 break;
530 default:
531 fprintf(stderr, "%s: bad angle basis (%d)\n", caller, angle_basis);
532 return 0;
533 }
534 puts("\t\t\t<ScatteringDataType>BTDF</ScatteringDataType>");
535 puts("\t\t\t<ScatteringData>");
536 fflush(stdout);
537 if (correct_klems) { /* correct Klems matrix data */
538 FILE *fp = stdin;
539 if (df->fname[0] == '!')
540 fp = popen(df->fname+1, "r");
541 else if (df->fname != stdin_name)
542 fp = fopen(df->fname, "r");
543 if (fp == NULL) {
544 fprintf(stderr, "%s: cannot open '%s'\n",
545 caller, df->fname);
546 return 0;
547 }
548 if (!filter_klems_matrix(fp)) {
549 fprintf(stderr, "%s: Klems data error from '%s'\n",
550 caller, df->fname);
551 return 0;
552 }
553 if (df->fname[0] != '!') {
554 fclose(fp);
555 } else if (pclose(fp)) {
556 fprintf(stderr, "%s: error running '%s'\n",
557 caller, df->fname);
558 return 0;
559 }
560 } else if (df->fname == stdin_name) {
561 copy_and_close(fileno(stdin));
562 } else if (df->fname[0] != '!') {
563 if (!copy_and_close(open(df->fname, O_RDONLY))) {
564 fprintf(stderr, "%s: error reading from '%s'\n",
565 caller, df->fname);
566 return 0;
567 }
568 } else if (system(df->fname+1)) {
569 fprintf(stderr, "%s: error running '%s'\n", caller, df->fname);
570 return 0;
571 }
572 puts("\t\t\t</ScatteringData>");
573 puts("\t\t</WavelengthDataBlock>");
574 puts("\t</WavelengthData>");
575 return 1;
576 }
577
578 /* Write out XML, interpolating BSDF data block(s) */
579 static int
580 writeBSDF(const char *caller, ezxml_t fl)
581 {
582 char *xml = ezxml_toxml(fl); /* store XML in string */
583 int ei, i;
584 /* locate trailer */
585 for (ei = strlen(xml)-strlen("</Layer></Optical></WindowElement>");
586 ei >= 0; ei--)
587 if (!strncmp(xml+ei, "</Layer>", 8))
588 break;
589 if (ei < 0) {
590 fprintf(stderr, "%s: internal - cannot find trailer\n",
591 caller);
592 free(xml);
593 return 0;
594 }
595 puts("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
596 for (i = 0; i < ncomm; i++)
597 printf("<!-- %s -->\n", commlist[i]);
598 fflush(stdout); /* write previous XML info. */
599 if (write(fileno(stdout), xml, ei) != ei) {
600 free(xml);
601 return 0;
602 }
603 for (i = 0; i < ndataf; i++) /* interpolate new data */
604 if (!writeBSDFblock(caller, &data_file[i])) {
605 free(xml);
606 return 0;
607 }
608 fputs(xml+ei, stdout); /* write trailer */
609 free(xml); /* free string */
610 fputc('\n', stdout);
611 if (fflush(stdout) != 0)
612 return 0;
613 /* unlink data files if req. */
614 for (i = ndataf*(unlink_datafiles != 0); i--; )
615 if (data_file[i].fname != stdin_name &&
616 data_file[i].fname[0] != '!')
617 unlink(data_file[i].fname);
618 if (unlink_datafiles > 1 && mgf_geometry != NULL &&
619 mgf_geometry != stdin_name &&
620 mgf_geometry[0] != '!')
621 unlink(mgf_geometry);
622 return 1;
623 }
624
625 /* Insert BSDF data into XML wrapper */
626 static int
627 wrapBSDF(const char *caller)
628 {
629 const char *xml_path = xml_input;
630 ezxml_t fl, wtl;
631 /* load previous XML/template */
632 if (xml_input == stdin_name) {
633 fl = ezxml_parse_fp(stdin);
634 } else if (xml_input[0] == '!') {
635 FILE *pfp = popen(xml_input+1, "r");
636 if (pfp == NULL) {
637 fprintf(stderr, "%s: cannot start process '%s'\n",
638 caller, xml_input);
639 return 0;
640 }
641 fl = ezxml_parse_fp(pfp);
642 if (pclose(pfp)) {
643 fprintf(stderr, "%s: error running '%s'\n",
644 caller, xml_input);
645 return 0;
646 }
647 } else {
648 xml_path = getpath((char *)xml_input, getrlibpath(), R_OK);
649 if (xml_path == NULL) {
650 fprintf(stderr, "%s: cannot find XML file named '%s'\n",
651 caller, xml_input==NULL ? "NULL" : xml_input);
652 return 0;
653 }
654 fl = ezxml_parse_file(xml_path);
655 }
656 if (fl == NULL) {
657 fprintf(stderr, "%s: cannot load XML '%s'\n", caller, xml_path);
658 return 0;
659 }
660 if (ezxml_error(fl)[0]) {
661 fprintf(stderr, "%s: error in XML '%s': %s\n", caller, xml_path,
662 ezxml_error(fl));
663 goto failure;
664 }
665 if (strcmp(ezxml_name(fl), top_level_name)) {
666 fprintf(stderr, "%s: top level in XML '%s' not '%s'\n",
667 caller, xml_path, top_level_name);
668 goto failure;
669 }
670 wtl = ezxml_child(fl, "FileType");
671 if (wtl != NULL && strcmp(ezxml_txt(wtl), "BSDF")) {
672 fprintf(stderr, "%s: wrong FileType in XML '%s' (must be 'BSDF')",
673 caller, xml_path);
674 goto failure;
675 }
676 wtl = ezxml_child(ezxml_child(fl, "Optical"), "Layer");
677 if (wtl == NULL) {
678 fprintf(stderr, "%s: no optical layers in XML '%s'",
679 caller, xml_path);
680 goto failure;
681 }
682 /* make material assignments */
683 if (!mat_assignments(caller, xml_path, wtl))
684 goto failure;
685 if (mgf_geometry != NULL) { /* add geometry if specified */
686 ezxml_t geom = ezxml_child(wtl, "Geometry");
687 if (geom == NULL)
688 geom = ezxml_add_child(wtl, "Geometry", strlen(wtl->txt));
689 ezxml_set_attr(geom, "format", "MGF");
690 geom = ezxml_child(geom, "MGFblock");
691 if (geom == NULL) {
692 geom = ezxml_child(wtl, "Geometry");
693 geom = ezxml_add_child(geom, "MGFblock", 0);
694 }
695 ezxml_set_attr(geom, "unit", attr_unit);
696 ezxml_set_txt(geom, input2str(mgf_geometry));
697 if (geom->txt[0])
698 ezxml_set_flag(geom, EZXML_TXTM);
699 }
700 /* check basis */
701 if (angle_basis != ABdefault) {
702 size_t offset = 0;
703 ezxml_t ab, dd = ezxml_child(wtl, "DataDefinition");
704 if (dd != NULL) {
705 offset = dd->off;
706 if (dd->child != NULL)
707 fprintf(stderr,
708 "%s: warning - replacing existing <DataDefinition> in '%s'\n",
709 caller, xml_path);
710 ezxml_remove(dd);
711 } else
712 offset = strlen(wtl->txt);
713 dd = ezxml_insert(ezxml_parse_str(basis_definition[angle_basis],
714 strlen(basis_definition[angle_basis])),
715 wtl, offset);
716 if ((ab = ezxml_child(dd, "AngleBasis")) != NULL &&
717 !finish_angle_basis(ab))
718 goto failure;
719 } else if ((angle_basis = determine_angle_basis(xml_path, wtl)) < 0) {
720 fprintf(stderr, "%s: need -a option to set angle basis\n",
721 caller);
722 goto failure;
723 }
724 /* write & add BSDF data blocks */
725 if (!writeBSDF(caller, fl))
726 goto failure;
727 ezxml_free(fl); /* all done */
728 return 1;
729 failure:
730 ezxml_free(fl);
731 return 0;
732 }
733
734 /* Report usage and exit */
735 static void
736 UsageExit(const char *pname)
737 {
738 fputs("Usage: ", stderr);
739 fputs(pname, stderr);
740 fputs(" [-W][-c][-a {kf|kh|kq|t3|t4}][-u unit][-g geom][-f 'x=string;y=string']", stderr);
741 fputs(" [-s spectr][-tb inp][-tf inp][-rb inp][-rf inp][-C comm]", stderr);
742 fputs(" [input.xml]\n", stderr);
743 exit(1);
744 }
745
746 /* Load XML file and use to wrap BSDF data (or modify fields) */
747 int
748 main(int argc, char *argv[])
749 {
750 int cur_spectrum = DSvisible;
751 int ncust_spec = 0;
752 int used_stdin = 0;
753 int units_set = 0;
754 int i;
755 /* get/check arguments */
756 for (i = 1; i < argc && argv[i][0] == '-'; i++) {
757 switch (argv[i][1]) {
758 case 'W': /* customize for WINDOW 6 output */
759 xml_input = win6_template;
760 continue;
761 case 'f': /* field assignment(s) */
762 if (++i >= argc)
763 UsageExit(argv[0]);
764 if (nfield_assign >= MAXASSIGN) {
765 fprintf(stderr, "%s: too many -f options",
766 argv[0]);
767 return 1;
768 }
769 field_assignment[nfield_assign++] = argv[i];
770 continue;
771 case 'u': /* unit */
772 if (++i >= argc)
773 UsageExit(argv[0]);
774 if (units_set++) {
775 fprintf(stderr, "%s: only one -u option allowed\n",
776 argv[0]);
777 return 1;
778 }
779 if (strstr(legal_units, argv[i]) == NULL) {
780 fprintf(stderr, "%s: -u unit must be one of (%s)\n",
781 argv[0], legal_units);
782 return 1;
783 }
784 attr_unit = argv[i];
785 continue;
786 case 'U': /* unlink data files when done */
787 unlink_datafiles = 1 + (argv[i][2] == 'U');
788 continue;
789 case 'a': /* angle basis */
790 if (++i >= argc)
791 UsageExit(argv[0]);
792 if (angle_basis != ABdefault) {
793 fprintf(stderr, "%s: only one -a option allowed\n",
794 argv[0]);
795 return 1;
796 }
797 if (!strcasecmp(argv[i], "kf"))
798 angle_basis = ABklemsFull;
799 else if (!strcasecmp(argv[i], "kh"))
800 angle_basis = ABklemsHalf;
801 else if (!strcasecmp(argv[i], "kq"))
802 angle_basis = ABklemsQuarter;
803 else if (!strcasecmp(argv[i], "t3"))
804 angle_basis = ABtensorTree3;
805 else if (!strcasecmp(argv[i], "t4"))
806 angle_basis = ABtensorTree4;
807 else
808 UsageExit(argv[0]);
809 continue;
810 case 'c': /* correct solid angle */
811 correct_solid_angle = 1;
812 continue;
813 case 'C': /* comment */
814 if (ncomm >= MAXCOMM) {
815 fprintf(stderr, "%s: too many comments\n",
816 argv[0]);
817 return 1;
818 }
819 if (strchr(argv[++i], '>') != NULL) {
820 fprintf(stderr, "%s: illegal character in comment\n",
821 argv[0]);
822 return 1;
823 }
824 commlist[ncomm++] = argv[i];
825 continue;
826 case 't': /* transmission */
827 if (i >= argc-1)
828 UsageExit(argv[0]);
829 if (ndataf >= MAXFILES) {
830 fprintf(stderr, "%s: too many data files\n",
831 argv[0]);
832 return 1;
833 }
834 if (!strcmp(argv[i], "-tf"))
835 data_file[ndataf].type = DTtransForward;
836 else if (!strcmp(argv[i], "-tb"))
837 data_file[ndataf].type = DTtransBackward;
838 else
839 UsageExit(argv[0]);
840 if (!strcmp(argv[++i], "-")) {
841 if (used_stdin++) UsageExit(argv[i]);
842 argv[i] = (char *)stdin_name;
843 }
844 data_file[ndataf].fname = argv[i];
845 data_file[ndataf].spectrum = cur_spectrum;
846 ndataf++;
847 continue;
848 case 'r': /* reflection */
849 if (i >= argc-1)
850 UsageExit(argv[0]);
851 if (ndataf >= MAXFILES) {
852 fprintf(stderr, "%s: too many data files\n",
853 argv[0]);
854 return 1;
855 }
856 if (!strcmp(argv[i], "-rf"))
857 data_file[ndataf].type = DTreflForward;
858 else if (!strcmp(argv[i], "-rb"))
859 data_file[ndataf].type = DTreflBackward;
860 else
861 UsageExit(argv[0]);
862 if (!strcmp(argv[++i], "-")) {
863 if (used_stdin++) UsageExit(argv[i]);
864 argv[i] = (char *)stdin_name;
865 }
866 data_file[ndataf].fname = argv[i];
867 data_file[ndataf].spectrum = cur_spectrum;
868 ndataf++;
869 continue;
870 case 's': /* spectrum name or input file */
871 if (++i >= argc)
872 UsageExit(argv[0]);
873 if (!strcasecmp(argv[i], "Solar"))
874 cur_spectrum = DSsolar;
875 else if (!strcasecmp(argv[i], "Visible") ||
876 !strcasecmp(argv[i], "CIE-Y"))
877 cur_spectrum = DSvisible;
878 else if (!strcasecmp(argv[i], "CIE-X"))
879 cur_spectrum = DSxbar31;
880 else if (!strcasecmp(argv[i], "CIE-Z"))
881 cur_spectrum = DSzbar31;
882 else if (!strcasecmp(argv[i], "CIE-u"))
883 cur_spectrum = DSuprime;
884 else if (!strcasecmp(argv[i], "CIE-v"))
885 cur_spectrum = DSvprime;
886 else if (!strcasecmp(argv[i], "NIR"))
887 cur_spectrum = DSnir;
888 else {
889 if (!strcmp(argv[i], "-")) {
890 fprintf(stderr,
891 "%s: cannot read spectra from stdin",
892 argv[0]);
893 return 1;
894 }
895 cur_spectrum = ncust_spec;
896 spectr_file[ncust_spec++] = argv[i];
897 }
898 continue;
899 case 'g': /* MGF geometry file */
900 if (i >= argc-1)
901 UsageExit(argv[0]);
902 if (mgf_geometry != NULL) {
903 fprintf(stderr, "%s: only one -g option allowed\n",
904 argv[0]);
905 return 1;
906 }
907 if (!strcmp(argv[++i], "-")) {
908 if (used_stdin++) UsageExit(argv[i]);
909 argv[i] = (char *)stdin_name;
910 }
911 mgf_geometry = argv[i];
912 continue;
913 case '\0': /* input XML from stdin */
914 break;
915 default:
916 UsageExit(argv[0]);
917 break;
918 }
919 break;
920 }
921 doneOptions: /* get XML input */
922 if (i >= argc) {
923 if (xml_input == NULL)
924 xml_input = def_template;
925 } else if ((i < argc-1) | (xml_input != NULL)) {
926 fprintf(stderr, "%s: only one XML input allowed\n", argv[0]);
927 UsageExit(argv[0]);
928 } else if (!strcmp(argv[i], "-")) {
929 if (used_stdin++) UsageExit(argv[0]);
930 xml_input = stdin_name;
931 } else {
932 xml_input = argv[i];
933 }
934 /* wrap it! */
935 return !wrapBSDF(argv[0]);
936 }