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root/radiance/ray/src/util/wrapBSDF.c
Revision: 2.27
Committed: Wed Sep 7 18:55:39 2022 UTC (2 months, 2 weeks ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: HEAD
Changes since 2.26: +8 -6 lines
Log Message:
fix(wrapBSDF): Allow for commas in Klems matrix data

File Contents

# User Rev Content
1 greg 2.1 #ifndef lint
2 greg 2.27 static const char RCSid[] = "$Id: wrapBSDF.c,v 2.26 2020/10/26 21:12:20 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 schorsch 2.20 #include "platform.h"
11 greg 2.1 #include <ctype.h>
12     #include "rtio.h"
13 greg 2.17 #include "paths.h"
14 greg 2.1 #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 greg 2.3 const char win6_template[] = "WINDOW6BSDFt.xml";
20 greg 2.1
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 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 greg 2.16 /* comment list */
30 greg 2.26 #define MAXCOMM 80
31 greg 2.16 const char *commlist[MAXCOMM];
32     int ncomm = 0;
33 greg 2.6 /* angle bases */
34 greg 2.1 enum { ABdefault=-1, ABklemsFull=0, ABklemsHalf, ABklemsQuarter,
35     ABtensorTree3, ABtensorTree4, ABend };
36    
37     int angle_basis = ABdefault;
38    
39 greg 2.7 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 greg 2.1 /* field IDs and nicknames */
47     struct s_fieldID {
48     char nickName[4];
49 greg 2.3 short has_unit;
50     short win_need;
51 greg 2.1 const char *fullName;
52     } XMLfieldID[] = {
53 greg 2.3 {"m", 0, 1, "Manufacturer"},
54     {"n", 0, 1, "Name"},
55 greg 2.22 {"d", 0, 0, "DeviceType"},
56 greg 2.3 {"c", 0, 0, "ThermalConductivity"},
57     {"ef", 0, 0, "EmissivityFront"},
58     {"eb", 0, 0, "EmissivityBack"},
59     {"tir", 0, 0, "TIR"},
60     {"eo", 0, 0, "EffectiveOpennessFraction"},
61     {"t", 1, 1, "Thickness"},
62     {"h", 1, 0, "Height"},
63     {"w", 1, 0, "Width"},
64     {"\0", 0, 0, NULL} /* terminator */
65 greg 2.1 };
66     /* field assignments */
67 greg 2.22 #define MAXASSIGN 16
68 greg 2.1 const char *field_assignment[MAXASSIGN];
69     int nfield_assign = 0;
70     #define FASEP ';'
71     /* data file(s) & spectra */
72 greg 2.24 enum { DTransFront, DTransBack, DTreflFront, DTreflBack };
73    
74     static const char component_name[4][20] = {
75     "Transmission Front",
76     "Transmission Back",
77     "Reflection Front",
78     "Reflection Back"
79     };
80 greg 2.1
81 greg 2.11 enum { DSsolar=-1, DSnir=-2, DSxbar31=-3, DSvisible=-4, DSzbar31=-5,
82     DSuprime=-6, DSvprime=-7 };
83 greg 2.1
84     #define MAXFILES 20
85    
86     struct s_dfile {
87     const char *fname; /* input data file name */
88     short type; /* BSDF data type */
89     short spectrum; /* BSDF sensor spectrum */
90     } data_file[MAXFILES];
91    
92     int ndataf = 0; /* number of data files */
93    
94 greg 2.18 int unlink_datafiles = 0; /* unlink data files when done */
95    
96 greg 2.1 const char *spectr_file[MAXFILES]; /* custom spectral curve input */
97    
98     const char top_level_name[] = "WindowElement";
99    
100 greg 2.3 static char basis_definition[][256] = {
101 greg 2.1
102 greg 2.4 "\t<DataDefinition>\n"
103 greg 2.1 "\t\t<IncidentDataStructure>Columns</IncidentDataStructure>\n"
104     "\t\t<AngleBasis>\n"
105     "\t\t\t<AngleBasisName>LBNL/Klems Full</AngleBasisName>\n"
106 greg 2.4 "\t\t\t</AngleBasis>\n"
107     "\t</DataDefinition>\n",
108 greg 2.1
109 greg 2.4 "\t<DataDefinition>\n"
110 greg 2.1 "\t\t<IncidentDataStructure>Columns</IncidentDataStructure>\n"
111     "\t\t<AngleBasis>\n"
112     "\t\t\t<AngleBasisName>LBNL/Klems Half</AngleBasisName>\n"
113 greg 2.4 "\t\t\t</AngleBasis>\n"
114     "\t</DataDefinition>\n",
115 greg 2.1
116 greg 2.4 "\t<DataDefinition>\n"
117 greg 2.1 "\t\t<IncidentDataStructure>Columns</IncidentDataStructure>\n"
118     "\t\t<AngleBasis>\n"
119     "\t\t\t<AngleBasisName>LBNL/Klems Quarter</AngleBasisName>\n"
120 greg 2.4 "\t\t\t</AngleBasis>\n"
121     "\t</DataDefinition>\n",
122 greg 2.1
123 greg 2.4 "\t<DataDefinition>\n"
124     "\t\t<IncidentDataStructure>TensorTree3</IncidentDataStructure>\n"
125     "\t</DataDefinition>\n",
126    
127     "\t<DataDefinition>\n"
128     "\t\t<IncidentDataStructure>TensorTree4</IncidentDataStructure>\n"
129     "\t</DataDefinition>\n",
130 greg 2.1 };
131    
132 greg 2.23 /* Check that the last-added data file is unique */
133     static int
134     check_new_data_file()
135     {
136     int i = ndataf;
137    
138     while (i-- > 0)
139     if ((data_file[i].spectrum == data_file[ndataf].spectrum) &
140     (data_file[i].type == data_file[ndataf].type)) {
141     fprintf(stderr,
142 greg 2.24 "%s: warning - ignoring duplicate component %s\n",
143     data_file[ndataf].fname,
144     component_name[data_file[i].type]);
145 greg 2.23 return 0;
146     }
147     return 1;
148     }
149    
150 greg 2.1 /* Copy data from file descriptor to stdout and close */
151     static int
152     copy_and_close(int fd)
153     {
154     int ok = 1;
155     char buf[8192];
156     int n;
157    
158     if (fd < 0)
159     return 0;
160     while ((n = read(fd, buf, sizeof(buf))) > 0)
161     if (write(fileno(stdout), buf, n) != n) {
162     ok = 0;
163     break;
164     }
165     ok &= (n == 0);
166     close(fd);
167     return ok;
168     }
169    
170     /* Allocate and assign string from file or stream */
171     static char *
172     input2str(const char *inpspec)
173     {
174     FILE *fp = NULL;
175     char *str;
176     int len, pos, n;
177    
178     if (inpspec == NULL || !*inpspec)
179     return "";
180     if (inpspec == stdin_name) { /* read from stdin */
181     fp = stdin;
182 greg 2.2 } else if (inpspec[0] == '!') { /* read from command */
183 greg 2.1 fp = popen(inpspec+1, "r");
184     if (fp == NULL) {
185     fprintf(stderr, "Cannot start process '%s'\n",
186 greg 2.2 inpspec);
187 greg 2.1 return "";
188     }
189     } else { /* else load file */
190     int fd = open(inpspec, O_RDONLY);
191     if (fd < 0) {
192     fprintf(stderr, "%s: cannot open\n", inpspec);
193     return "";
194     }
195 schorsch 2.20 #if !defined(_WIN32) && !defined(_WIN64)
196     /* XXX somehow broken on Windows */
197 greg 2.1 len = lseek(fd, 0L, SEEK_END);
198 greg 2.3 if (len > 0) {
199     lseek(fd, 0L, SEEK_SET);
200     str = (char *)malloc(len+1);
201     if (str == NULL) {
202     close(fd);
203     goto memerr;
204     }
205     if (read(fd, str, len) != len) {
206     fprintf(stderr, "%s: read error\n", inpspec);
207     free(str);
208     close(fd);
209     return "";
210     }
211     str[len] = '\0';
212 greg 2.1 close(fd);
213 greg 2.3 return str;
214 greg 2.1 }
215 greg 2.12 #endif
216 greg 2.3 fp = fdopen(fd, "r"); /* not a regular file */
217 greg 2.1 }
218     /* reading from stream */
219     str = (char *)malloc((len=8192)+1);
220     if (str == NULL)
221     goto memerr;
222     pos = 0;
223     while ((n = read(fileno(fp), str+pos, len-pos)) > 0)
224     if ((pos += n) >= len) { /* need more space? */
225     str = (char *)realloc(str, (len += len>>2) + 1);
226     if (str == NULL)
227     goto memerr;
228     }
229     if (n < 0) {
230     fprintf(stderr, "%s: read error\n", inpspec);
231     free(str);
232     str = "";
233     } else { /* tidy up result */
234     str[pos] = '\0';
235     str = (char *)realloc(str, (len=pos)+1);
236     if (str == NULL)
237     goto memerr;
238     }
239 greg 2.2 if (inpspec[0] != '!')
240 greg 2.1 fclose(fp);
241     else if (pclose(fp))
242 greg 2.2 fprintf(stderr, "Error running command '%s'\n", inpspec);
243 greg 2.1 return str;
244     memerr:
245     fprintf(stderr, "%s: error allocating memory\n", inpspec);
246     if (fp != NULL)
247 greg 2.2 (inpspec[0] == '!') ? pclose(fp) : fclose(fp);
248 greg 2.1 return "";
249     }
250    
251     /* Make material assignments in field_assignment to XML fields */
252     static int
253     mat_assignments(const char *caller, const char *fn, ezxml_t wtl)
254     {
255     int i;
256    
257     wtl = ezxml_child(wtl, "Material");
258     if (wtl == NULL) {
259     fprintf(stderr, "%s: missing <Material> tag\n", fn);
260     return 0;
261     }
262     for (i = 0; i < nfield_assign; i++) {
263     const char *fnext = field_assignment[i];
264     for ( ; ; ) {
265 greg 2.5 int added = 0;
266 greg 2.1 ezxml_t fld;
267     char sbuf[512];
268     int j;
269    
270     while (isspace(*fnext))
271     ++fnext;
272     if (!*fnext)
273     break;
274 greg 2.3 for (j = 0; *fnext != '=' && !isspace(*fnext); ) {
275 greg 2.1 if (!*fnext | (*fnext == FASEP) |
276     (j >= sizeof(sbuf)-1)) {
277     fprintf(stderr,
278     "%s: bad tag name in assignment '%s'\n",
279     caller, field_assignment[i]);
280     return 0;
281     }
282     sbuf[j++] = *fnext++;
283     }
284 greg 2.2 sbuf[j] = '\0'; /* check known field */
285 greg 2.1 for (j = 0; XMLfieldID[j].nickName[0]; j++)
286 greg 2.2 if (!strcasecmp(sbuf, XMLfieldID[j].nickName) ||
287     !strcasecmp(sbuf, XMLfieldID[j].fullName)) {
288 greg 2.1 strcpy(sbuf, XMLfieldID[j].fullName);
289     break;
290     }
291     /* check if tag exists */
292     fld = ezxml_child(wtl, sbuf);
293     if (fld == NULL) { /* otherwise, create one */
294 greg 2.3 if (!XMLfieldID[j].nickName[0])
295     fprintf(stderr,
296     "%s: warning - adding tag <%s>\n",
297     fn, sbuf);
298 greg 2.5 ezxml_add_txt(wtl, "\t");
299 greg 2.1 fld = ezxml_add_child_d(wtl, sbuf, strlen(wtl->txt));
300 greg 2.5 ++added;
301 greg 2.1 }
302     if (XMLfieldID[j].has_unit)
303     ezxml_set_attr(fld, "unit", attr_unit);
304 greg 2.3 XMLfieldID[j].win_need = 0;
305 greg 2.1 while (isspace(*fnext))
306     ++fnext;
307     if (*fnext++ != '=') {
308     fprintf(stderr,
309     "%s: missing '=' in assignment '%s'\n",
310     caller, field_assignment[i]);
311     return 0;
312     }
313 greg 2.3 for (j = 0; *fnext && *fnext != FASEP; ) {
314 greg 2.1 if (j >= sizeof(sbuf)-1) {
315     fprintf(stderr,
316     "%s: field too long in '%s'\n",
317     caller, field_assignment[i]);
318     return 0;
319     }
320     sbuf[j++] = *fnext++;
321     }
322     sbuf[j] = '\0';
323     ezxml_set_txt_d(fld, sbuf);
324 greg 2.5 if (added)
325     ezxml_add_txt(wtl, "\n\t");
326 greg 2.1 fnext += (*fnext == FASEP);
327     }
328     }
329 greg 2.3 /* check required WINDOW settings */
330     if (xml_input == win6_template)
331     for (i = 0; XMLfieldID[i].nickName[0]; i++)
332     if (XMLfieldID[i].win_need &&
333 greg 2.10 !ezxml_txt(ezxml_child(wtl,XMLfieldID[i].fullName))[0])
334 greg 2.3 fprintf(stderr,
335 greg 2.10 "%s: warning - missing '%s' assignment for WINDOW <%s>\n",
336 greg 2.3 caller, XMLfieldID[i].nickName,
337     XMLfieldID[i].fullName);
338 greg 2.10 return 1;
339 greg 2.1 }
340    
341     /* Complete angle basis specification */
342     static int
343     finish_angle_basis(ezxml_t ab)
344     {
345     const char *bn = ezxml_txt(ezxml_child(ab, "AngleBasisName"));
346     int i, n = nabases;
347     char buf[32];
348    
349     if (!*bn) {
350     fputs("Internal error - missing <AngleBasisName>!\n", stderr);
351     return 0;
352     }
353     while (n-- > 0)
354     if (!strcasecmp(bn, abase_list[n].name))
355     break;
356     if (n < 0) {
357     fprintf(stderr, "Internal error - unknown angle basis '%s'", bn);
358     return 0;
359     }
360     for (i = 0; abase_list[n].lat[i].nphis; i++) {
361     ezxml_t tb, abb = ezxml_add_child(ab, "AngleBasisBlock",
362     strlen(ab->txt));
363     sprintf(buf, "%g", i ?
364     .5*(abase_list[n].lat[i].tmin + abase_list[n].lat[i+1].tmin) :
365     .0);
366 greg 2.4 ezxml_add_txt(abb, "\n\t\t\t\t");
367 greg 2.1 ezxml_set_txt_d(ezxml_add_child(abb,"Theta",strlen(abb->txt)), buf);
368     sprintf(buf, "%d", abase_list[n].lat[i].nphis);
369 greg 2.4 ezxml_add_txt(abb, "\n\t\t\t\t");
370 greg 2.1 ezxml_set_txt_d(ezxml_add_child(abb,"nPhis",strlen(abb->txt)), buf);
371 greg 2.4 ezxml_add_txt(abb, "\n\t\t\t\t");
372 greg 2.1 tb = ezxml_add_child(abb, "ThetaBounds", strlen(abb->txt));
373 greg 2.4 ezxml_add_txt(tb, "\n\t\t\t\t\t");
374 greg 2.1 sprintf(buf, "%g", abase_list[n].lat[i].tmin);
375 greg 2.4 ezxml_set_txt_d(ezxml_add_child(tb,"LowerTheta",strlen(tb->txt)), buf);
376     ezxml_add_txt(tb, "\n\t\t\t\t\t");
377 greg 2.1 sprintf(buf, "%g", abase_list[n].lat[i+1].tmin);
378 greg 2.4 ezxml_set_txt_d(ezxml_add_child(tb,"UpperTheta",strlen(tb->txt)), buf);
379     ezxml_add_txt(tb, "\n\t\t\t\t");
380     ezxml_add_txt(abb, "\n\t\t\t");
381     ezxml_add_txt(ab, "\n\t\t\t");
382 greg 2.1 }
383     return 1;
384     }
385    
386     /* Determine our angle basis from current tags */
387     static int
388     determine_angle_basis(const char *fn, ezxml_t wtl)
389     {
390     const char *ids;
391     int i;
392    
393     wtl = ezxml_child(wtl, "DataDefinition");
394     if (wtl == NULL)
395     return -1;
396     ids = ezxml_txt(ezxml_child(wtl, "IncidentDataStructure"));
397 greg 2.4 if (!ids[0])
398 greg 2.1 return -1;
399     for (i = 0; i < ABend; i++) {
400     ezxml_t parsed = ezxml_parse_str(basis_definition[i],
401     strlen(basis_definition[i]));
402     int match = 0;
403     if (!strcmp(ids, ezxml_txt(ezxml_child(parsed,
404     "IncidentDataStructure")))) {
405     const char *abn0 = ezxml_txt(
406     ezxml_child(ezxml_child(wtl,
407     "AngleBasis"), "AngleBasisName"));
408     const char *abn1 = ezxml_txt(
409     ezxml_child(ezxml_child(parsed,
410     "AngleBasis"), "AngleBasisName"));
411     match = !strcmp(abn0, abn1);
412     }
413     ezxml_free(parsed);
414     if (match)
415     return i;
416     }
417     return -1;
418     }
419    
420 greg 2.27 /* Filter Klems angle data, factoring out incident projected solid angle */
421 greg 2.6 static int
422     filter_klems_matrix(FILE *fp)
423     {
424 greg 2.7 const char *bn = klems_basis_name[angle_basis];
425 greg 2.27 int i, j, c, n = nabases;
426 greg 2.6 /* get angle basis */
427     while (n-- > 0)
428     if (!strcasecmp(bn, abase_list[n].name))
429     break;
430     if (n < 0)
431     return 0;
432     /* read/correct/write matrix */
433     for (i = 0; i < abase_list[n].nangles; i++) {
434 greg 2.21 const double corr = 1./io_getohm(i, &abase_list[n]);
435 greg 2.6 for (j = 0; j < abase_list[n].nangles; j++) {
436     double d;
437 greg 2.27 if (fscanf(fp, "%lf ", &d) != 1)
438 greg 2.6 return 0;
439 greg 2.27 if ((c = getc(fp)) != ',')
440     ungetc(c, fp);
441 greg 2.7 if (d < -1e-3) {
442     fputs("Negative BSDF data!\n", stderr);
443     return 0;
444     }
445 greg 2.21 printf(" %.3e", d*corr*(d > 0));
446 greg 2.6 }
447     fputc('\n', stdout);
448     }
449 greg 2.27 while ((c = getc(fp)) != EOF)
450     if (!isspace(c)) {
451 greg 2.7 fputs("Unexpected data past EOF\n", stderr);
452     return 0;
453     }
454     return 1; /* all is good */
455 greg 2.6 }
456    
457 greg 2.1 /* Write out BSDF data block with surrounding tags */
458     static int
459     writeBSDFblock(const char *caller, struct s_dfile *df)
460     {
461 greg 2.7 int correct_klems = correct_solid_angle;
462 greg 2.1 char *cp;
463    
464     puts("\t<WavelengthData>");
465     puts("\t\t<LayerNumber>System</LayerNumber>");
466     switch (df->spectrum) {
467     case DSvisible:
468     puts("\t\t<Wavelength unit=\"Integral\">Visible</Wavelength>");
469 greg 2.7 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
470 greg 2.1 puts("\t\t<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum>");
471     break;
472     case DSxbar31:
473     puts("\t\t<Wavelength unit=\"Integral\">CIE-X</Wavelength>");
474 greg 2.14 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
475 greg 2.1 puts("\t\t<DetectorSpectrum>ASTM E308 1931 X.dsp</DetectorSpectrum>");
476     break;
477     case DSzbar31:
478     puts("\t\t<Wavelength unit=\"Integral\">CIE-Z</Wavelength>");
479 greg 2.14 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
480 greg 2.1 puts("\t\t<DetectorSpectrum>ASTM E308 1931 Z.dsp</DetectorSpectrum>");
481     break;
482 greg 2.11 case DSuprime:
483 greg 2.13 puts("\t\t<Wavelength unit=\"Integral\">CIE-u</Wavelength>");
484 greg 2.14 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
485 greg 2.11 break;
486     case DSvprime:
487 greg 2.13 puts("\t\t<Wavelength unit=\"Integral\">CIE-v</Wavelength>");
488 greg 2.14 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
489 greg 2.11 break;
490 greg 2.1 case DSsolar:
491     puts("\t\t<Wavelength unit=\"Integral\">Solar</Wavelength>");
492 greg 2.14 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
493 greg 2.1 puts("\t\t<DetectorSpectrum>None</DetectorSpectrum>");
494     break;
495     case DSnir:
496     puts("\t\t<Wavelength unit=\"Integral\">NIR</Wavelength>");
497 greg 2.14 puts("\t\t<SourceSpectrum>PLACE_HOLDER</SourceSpectrum>");
498 greg 2.1 puts("\t\t<DetectorSpectrum>PLACE_HOLDER</DetectorSpectrum>");
499     break;
500     default:
501     cp = strrchr(spectr_file[df->spectrum], '.');
502     if (cp != NULL)
503     *cp = '\0';
504     printf("\t\t<Wavelength unit=\"Integral\">%s</Wavelength>\n",
505     spectr_file[df->spectrum]);
506     if (cp != NULL)
507     *cp = '.';
508 greg 2.14 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
509 greg 2.1 printf("\t\t<DetectorSpectrum>%s</DetectorSpectrum>\n",
510     spectr_file[df->spectrum]);
511     break;
512     }
513     puts("\t\t<WavelengthDataBlock>");
514     fputs("\t\t\t<WavelengthDataDirection>", stdout);
515 greg 2.24 fputs(component_name[df->type], stdout);
516 greg 2.1 puts("</WavelengthDataDirection>");
517     switch (angle_basis) {
518     case ABklemsFull:
519     case ABklemsHalf:
520     case ABklemsQuarter:
521 greg 2.7 fputs("\t\t\t<ColumnAngleBasis>", stdout);
522     fputs(klems_basis_name[angle_basis], stdout);
523     puts("</ColumnAngleBasis>");
524     fputs("\t\t\t<RowAngleBasis>", stdout);
525     fputs(klems_basis_name[angle_basis], stdout);
526     puts("</RowAngleBasis>");
527 greg 2.1 break;
528     case ABtensorTree3:
529     case ABtensorTree4:
530     puts("\t\t\t<AngleBasis>LBNL/Shirley-Chiu</AngleBasis>");
531 greg 2.7 correct_klems = 0;
532 greg 2.1 break;
533     default:
534     fprintf(stderr, "%s: bad angle basis (%d)\n", caller, angle_basis);
535     return 0;
536     }
537     puts("\t\t\t<ScatteringDataType>BTDF</ScatteringDataType>");
538     puts("\t\t\t<ScatteringData>");
539     fflush(stdout);
540 greg 2.7 if (correct_klems) { /* correct Klems matrix data */
541 greg 2.6 FILE *fp = stdin;
542     if (df->fname[0] == '!')
543     fp = popen(df->fname+1, "r");
544     else if (df->fname != stdin_name)
545     fp = fopen(df->fname, "r");
546     if (fp == NULL) {
547     fprintf(stderr, "%s: cannot open '%s'\n",
548     caller, df->fname);
549     return 0;
550     }
551     if (!filter_klems_matrix(fp)) {
552     fprintf(stderr, "%s: Klems data error from '%s'\n",
553     caller, df->fname);
554     return 0;
555     }
556     if (df->fname[0] != '!') {
557     fclose(fp);
558     } else if (pclose(fp)) {
559     fprintf(stderr, "%s: error running '%s'\n",
560     caller, df->fname);
561     return 0;
562     }
563     } else if (df->fname == stdin_name) {
564 greg 2.1 copy_and_close(fileno(stdin));
565 greg 2.2 } else if (df->fname[0] != '!') {
566 greg 2.1 if (!copy_and_close(open(df->fname, O_RDONLY))) {
567     fprintf(stderr, "%s: error reading from '%s'\n",
568     caller, df->fname);
569     return 0;
570     }
571     } else if (system(df->fname+1)) {
572 greg 2.2 fprintf(stderr, "%s: error running '%s'\n", caller, df->fname);
573 greg 2.1 return 0;
574     }
575     puts("\t\t\t</ScatteringData>");
576     puts("\t\t</WavelengthDataBlock>");
577     puts("\t</WavelengthData>");
578     return 1;
579     }
580    
581     /* Write out XML, interpolating BSDF data block(s) */
582     static int
583     writeBSDF(const char *caller, ezxml_t fl)
584     {
585 greg 2.2 char *xml = ezxml_toxml(fl); /* store XML in string */
586 greg 2.1 int ei, i;
587     /* locate trailer */
588     for (ei = strlen(xml)-strlen("</Layer></Optical></WindowElement>");
589     ei >= 0; ei--)
590     if (!strncmp(xml+ei, "</Layer>", 8))
591     break;
592     if (ei < 0) {
593     fprintf(stderr, "%s: internal - cannot find trailer\n",
594     caller);
595     free(xml);
596     return 0;
597     }
598 greg 2.15 puts("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
599 greg 2.16 for (i = 0; i < ncomm; i++)
600     printf("<!-- %s -->\n", commlist[i]);
601 greg 2.1 fflush(stdout); /* write previous XML info. */
602     if (write(fileno(stdout), xml, ei) != ei) {
603     free(xml);
604     return 0;
605     }
606     for (i = 0; i < ndataf; i++) /* interpolate new data */
607     if (!writeBSDFblock(caller, &data_file[i])) {
608     free(xml);
609     return 0;
610     }
611     fputs(xml+ei, stdout); /* write trailer */
612 greg 2.2 free(xml); /* free string */
613 greg 2.4 fputc('\n', stdout);
614 greg 2.18 if (fflush(stdout) != 0)
615     return 0;
616     /* unlink data files if req. */
617     for (i = ndataf*(unlink_datafiles != 0); i--; )
618     if (data_file[i].fname != stdin_name &&
619     data_file[i].fname[0] != '!')
620     unlink(data_file[i].fname);
621 greg 2.19 if (unlink_datafiles > 1 && mgf_geometry != NULL &&
622     mgf_geometry != stdin_name &&
623     mgf_geometry[0] != '!')
624     unlink(mgf_geometry);
625 greg 2.18 return 1;
626 greg 2.1 }
627    
628     /* Insert BSDF data into XML wrapper */
629     static int
630     wrapBSDF(const char *caller)
631     {
632 greg 2.2 const char *xml_path = xml_input;
633 greg 2.1 ezxml_t fl, wtl;
634     /* load previous XML/template */
635 greg 2.2 if (xml_input == stdin_name) {
636     fl = ezxml_parse_fp(stdin);
637     } else if (xml_input[0] == '!') {
638     FILE *pfp = popen(xml_input+1, "r");
639     if (pfp == NULL) {
640     fprintf(stderr, "%s: cannot start process '%s'\n",
641     caller, xml_input);
642     return 0;
643     }
644     fl = ezxml_parse_fp(pfp);
645     if (pclose(pfp)) {
646     fprintf(stderr, "%s: error running '%s'\n",
647     caller, xml_input);
648     return 0;
649     }
650     } else {
651     xml_path = getpath((char *)xml_input, getrlibpath(), R_OK);
652     if (xml_path == NULL) {
653     fprintf(stderr, "%s: cannot find XML file named '%s'\n",
654     caller, xml_input==NULL ? "NULL" : xml_input);
655     return 0;
656     }
657     fl = ezxml_parse_file(xml_path);
658 greg 2.1 }
659     if (fl == NULL) {
660 greg 2.2 fprintf(stderr, "%s: cannot load XML '%s'\n", caller, xml_path);
661 greg 2.1 return 0;
662     }
663     if (ezxml_error(fl)[0]) {
664 greg 2.2 fprintf(stderr, "%s: error in XML '%s': %s\n", caller, xml_path,
665 greg 2.1 ezxml_error(fl));
666     goto failure;
667     }
668     if (strcmp(ezxml_name(fl), top_level_name)) {
669     fprintf(stderr, "%s: top level in XML '%s' not '%s'\n",
670     caller, xml_path, top_level_name);
671     goto failure;
672     }
673     wtl = ezxml_child(fl, "FileType");
674     if (wtl != NULL && strcmp(ezxml_txt(wtl), "BSDF")) {
675     fprintf(stderr, "%s: wrong FileType in XML '%s' (must be 'BSDF')",
676     caller, xml_path);
677     goto failure;
678     }
679     wtl = ezxml_child(ezxml_child(fl, "Optical"), "Layer");
680     if (wtl == NULL) {
681     fprintf(stderr, "%s: no optical layers in XML '%s'",
682     caller, xml_path);
683     goto failure;
684     }
685     /* make material assignments */
686 greg 2.3 if (!mat_assignments(caller, xml_path, wtl))
687 greg 2.1 goto failure;
688     if (mgf_geometry != NULL) { /* add geometry if specified */
689     ezxml_t geom = ezxml_child(wtl, "Geometry");
690     if (geom == NULL)
691 greg 2.3 geom = ezxml_add_child(wtl, "Geometry", strlen(wtl->txt));
692 greg 2.1 ezxml_set_attr(geom, "format", "MGF");
693     geom = ezxml_child(geom, "MGFblock");
694     if (geom == NULL) {
695     geom = ezxml_child(wtl, "Geometry");
696 greg 2.3 geom = ezxml_add_child(geom, "MGFblock", 0);
697 greg 2.1 }
698     ezxml_set_attr(geom, "unit", attr_unit);
699     ezxml_set_txt(geom, input2str(mgf_geometry));
700     if (geom->txt[0])
701     ezxml_set_flag(geom, EZXML_TXTM);
702     }
703     /* check basis */
704     if (angle_basis != ABdefault) {
705 greg 2.4 size_t offset = 0;
706 greg 2.1 ezxml_t ab, dd = ezxml_child(wtl, "DataDefinition");
707 greg 2.4 if (dd != NULL) {
708     offset = dd->off;
709 greg 2.5 if (dd->child != NULL)
710     fprintf(stderr,
711 greg 2.1 "%s: warning - replacing existing <DataDefinition> in '%s'\n",
712     caller, xml_path);
713 greg 2.4 ezxml_remove(dd);
714     } else
715     offset = strlen(wtl->txt);
716     dd = ezxml_insert(ezxml_parse_str(basis_definition[angle_basis],
717 greg 2.1 strlen(basis_definition[angle_basis])),
718 greg 2.4 wtl, offset);
719 greg 2.1 if ((ab = ezxml_child(dd, "AngleBasis")) != NULL &&
720     !finish_angle_basis(ab))
721     goto failure;
722     } else if ((angle_basis = determine_angle_basis(xml_path, wtl)) < 0) {
723     fprintf(stderr, "%s: need -a option to set angle basis\n",
724     caller);
725     goto failure;
726     }
727     /* write & add BSDF data blocks */
728     if (!writeBSDF(caller, fl))
729     goto failure;
730     ezxml_free(fl); /* all done */
731     return 1;
732     failure:
733     ezxml_free(fl);
734     return 0;
735     }
736    
737     /* Report usage and exit */
738     static void
739     UsageExit(const char *pname)
740     {
741     fputs("Usage: ", stderr);
742     fputs(pname, stderr);
743 greg 2.11 fputs(" [-W][-c][-a {kf|kh|kq|t3|t4}][-u unit][-g geom][-f 'x=string;y=string']", stderr);
744 greg 2.16 fputs(" [-s spectr][-tb inp][-tf inp][-rb inp][-rf inp][-C comm]", stderr);
745 greg 2.2 fputs(" [input.xml]\n", stderr);
746 greg 2.1 exit(1);
747     }
748    
749     /* Load XML file and use to wrap BSDF data (or modify fields) */
750     int
751     main(int argc, char *argv[])
752     {
753     int cur_spectrum = DSvisible;
754     int ncust_spec = 0;
755     int used_stdin = 0;
756     int units_set = 0;
757     int i;
758     /* get/check arguments */
759     for (i = 1; i < argc && argv[i][0] == '-'; i++) {
760     switch (argv[i][1]) {
761     case 'W': /* customize for WINDOW 6 output */
762     xml_input = win6_template;
763     continue;
764     case 'f': /* field assignment(s) */
765     if (++i >= argc)
766     UsageExit(argv[0]);
767     if (nfield_assign >= MAXASSIGN) {
768     fprintf(stderr, "%s: too many -f options",
769     argv[0]);
770     return 1;
771     }
772     field_assignment[nfield_assign++] = argv[i];
773     continue;
774     case 'u': /* unit */
775     if (++i >= argc)
776     UsageExit(argv[0]);
777     if (units_set++) {
778     fprintf(stderr, "%s: only one -u option allowed\n",
779     argv[0]);
780     return 1;
781     }
782 greg 2.2 if (strstr(legal_units, argv[i]) == NULL) {
783     fprintf(stderr, "%s: -u unit must be one of (%s)\n",
784 greg 2.1 argv[0], legal_units);
785     return 1;
786     }
787     attr_unit = argv[i];
788     continue;
789 greg 2.18 case 'U': /* unlink data files when done */
790 greg 2.19 unlink_datafiles = 1 + (argv[i][2] == 'U');
791 greg 2.18 continue;
792 greg 2.1 case 'a': /* angle basis */
793     if (++i >= argc)
794     UsageExit(argv[0]);
795     if (angle_basis != ABdefault) {
796     fprintf(stderr, "%s: only one -a option allowed\n",
797     argv[0]);
798     return 1;
799     }
800     if (!strcasecmp(argv[i], "kf"))
801     angle_basis = ABklemsFull;
802     else if (!strcasecmp(argv[i], "kh"))
803     angle_basis = ABklemsHalf;
804     else if (!strcasecmp(argv[i], "kq"))
805     angle_basis = ABklemsQuarter;
806     else if (!strcasecmp(argv[i], "t3"))
807     angle_basis = ABtensorTree3;
808     else if (!strcasecmp(argv[i], "t4"))
809     angle_basis = ABtensorTree4;
810     else
811     UsageExit(argv[0]);
812     continue;
813 greg 2.7 case 'c': /* correct solid angle */
814 greg 2.9 correct_solid_angle = 1;
815 greg 2.7 continue;
816 greg 2.16 case 'C': /* comment */
817     if (ncomm >= MAXCOMM) {
818     fprintf(stderr, "%s: too many comments\n",
819     argv[0]);
820     return 1;
821     }
822 greg 2.26 if (strstr(argv[++i], "-->") != NULL) {
823 greg 2.16 fprintf(stderr, "%s: illegal character in comment\n",
824     argv[0]);
825     return 1;
826     }
827     commlist[ncomm++] = argv[i];
828     continue;
829 greg 2.1 case 't': /* transmission */
830     if (i >= argc-1)
831     UsageExit(argv[0]);
832     if (ndataf >= MAXFILES) {
833     fprintf(stderr, "%s: too many data files\n",
834     argv[0]);
835     return 1;
836     }
837     if (!strcmp(argv[i], "-tf"))
838 greg 2.24 data_file[ndataf].type = DTransFront;
839 greg 2.1 else if (!strcmp(argv[i], "-tb"))
840 greg 2.24 data_file[ndataf].type = DTransBack;
841 greg 2.1 else
842     UsageExit(argv[0]);
843     if (!strcmp(argv[++i], "-")) {
844     if (used_stdin++) UsageExit(argv[i]);
845     argv[i] = (char *)stdin_name;
846     }
847     data_file[ndataf].fname = argv[i];
848     data_file[ndataf].spectrum = cur_spectrum;
849 greg 2.23 ndataf += check_new_data_file();
850 greg 2.1 continue;
851     case 'r': /* reflection */
852     if (i >= argc-1)
853     UsageExit(argv[0]);
854     if (ndataf >= MAXFILES) {
855     fprintf(stderr, "%s: too many data files\n",
856     argv[0]);
857     return 1;
858     }
859     if (!strcmp(argv[i], "-rf"))
860 greg 2.24 data_file[ndataf].type = DTreflFront;
861 greg 2.1 else if (!strcmp(argv[i], "-rb"))
862 greg 2.24 data_file[ndataf].type = DTreflBack;
863 greg 2.1 else
864     UsageExit(argv[0]);
865     if (!strcmp(argv[++i], "-")) {
866     if (used_stdin++) UsageExit(argv[i]);
867     argv[i] = (char *)stdin_name;
868     }
869     data_file[ndataf].fname = argv[i];
870 greg 2.8 data_file[ndataf].spectrum = cur_spectrum;
871 greg 2.24 ndataf += check_new_data_file();
872 greg 2.1 continue;
873     case 's': /* spectrum name or input file */
874     if (++i >= argc)
875     UsageExit(argv[0]);
876     if (!strcasecmp(argv[i], "Solar"))
877     cur_spectrum = DSsolar;
878     else if (!strcasecmp(argv[i], "Visible") ||
879     !strcasecmp(argv[i], "CIE-Y"))
880     cur_spectrum = DSvisible;
881     else if (!strcasecmp(argv[i], "CIE-X"))
882     cur_spectrum = DSxbar31;
883     else if (!strcasecmp(argv[i], "CIE-Z"))
884     cur_spectrum = DSzbar31;
885 greg 2.11 else if (!strcasecmp(argv[i], "CIE-u"))
886     cur_spectrum = DSuprime;
887     else if (!strcasecmp(argv[i], "CIE-v"))
888     cur_spectrum = DSvprime;
889 greg 2.1 else if (!strcasecmp(argv[i], "NIR"))
890     cur_spectrum = DSnir;
891     else {
892     if (!strcmp(argv[i], "-")) {
893     fprintf(stderr,
894     "%s: cannot read spectra from stdin",
895     argv[0]);
896     return 1;
897     }
898     cur_spectrum = ncust_spec;
899     spectr_file[ncust_spec++] = argv[i];
900     }
901     continue;
902     case 'g': /* MGF geometry file */
903     if (i >= argc-1)
904     UsageExit(argv[0]);
905     if (mgf_geometry != NULL) {
906     fprintf(stderr, "%s: only one -g option allowed\n",
907     argv[0]);
908     return 1;
909     }
910     if (!strcmp(argv[++i], "-")) {
911     if (used_stdin++) UsageExit(argv[i]);
912     argv[i] = (char *)stdin_name;
913     }
914     mgf_geometry = argv[i];
915     continue;
916     case '\0': /* input XML from stdin */
917     break;
918     default:
919     UsageExit(argv[0]);
920     break;
921     }
922     break;
923     }
924 greg 2.25 /* get XML input */
925 greg 2.1 if (i >= argc) {
926     if (xml_input == NULL)
927     xml_input = def_template;
928     } else if ((i < argc-1) | (xml_input != NULL)) {
929     fprintf(stderr, "%s: only one XML input allowed\n", argv[0]);
930     UsageExit(argv[0]);
931     } else if (!strcmp(argv[i], "-")) {
932     if (used_stdin++) UsageExit(argv[0]);
933     xml_input = stdin_name;
934     } else {
935     xml_input = argv[i];
936     }
937     /* wrap it! */
938     return !wrapBSDF(argv[0]);
939     }