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root/radiance/ray/src/util/wrapBSDF.c
Revision: 2.16
Committed: Fri May 29 07:45:48 2015 UTC (7 years, 6 months ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: rad5R0
Changes since 2.15: +21 -3 lines
Log Message:
Fixed issue with missing character type in genBSDF output

File Contents

# User Rev Content
1 greg 2.1 #ifndef lint
2 greg 2.16 static const char RCSid[] = "$Id: wrapBSDF.c,v 2.15 2015/05/29 07:16:49 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     /* input files (can be stdin_name) */
22     const char *xml_input = NULL;
23     /* unit for materials & geometry */
24 greg 2.2 const char *attr_unit = "meter";
25 greg 2.1 const char legal_units[] = "meter|foot|inch|centimeter|millimeter";
26     /* system materials & geometry */
27     const char *mgf_geometry = NULL;
28 greg 2.16 /* comment list */
29     #define MAXCOMM 30
30     const char *commlist[MAXCOMM];
31     int ncomm = 0;
32 greg 2.6 /* angle bases */
33 greg 2.1 enum { ABdefault=-1, ABklemsFull=0, ABklemsHalf, ABklemsQuarter,
34     ABtensorTree3, ABtensorTree4, ABend };
35    
36     int angle_basis = ABdefault;
37    
38 greg 2.7 int correct_solid_angle = 0;
39    
40     const char *klems_basis_name[] = {
41     "LBNL/Klems Full",
42     "LBNL/Klems Half",
43     "LBNL/Klems Quarter",
44     };
45 greg 2.1 /* field IDs and nicknames */
46     struct s_fieldID {
47     char nickName[4];
48 greg 2.3 short has_unit;
49     short win_need;
50 greg 2.1 const char *fullName;
51     } XMLfieldID[] = {
52 greg 2.3 {"m", 0, 1, "Manufacturer"},
53     {"n", 0, 1, "Name"},
54     {"c", 0, 0, "ThermalConductivity"},
55     {"ef", 0, 0, "EmissivityFront"},
56     {"eb", 0, 0, "EmissivityBack"},
57     {"tir", 0, 0, "TIR"},
58     {"eo", 0, 0, "EffectiveOpennessFraction"},
59     {"t", 1, 1, "Thickness"},
60     {"h", 1, 0, "Height"},
61     {"w", 1, 0, "Width"},
62     {"\0", 0, 0, NULL} /* terminator */
63 greg 2.1 };
64     /* field assignments */
65     #define MAXASSIGN 12
66     const char *field_assignment[MAXASSIGN];
67     int nfield_assign = 0;
68     #define FASEP ';'
69     /* data file(s) & spectra */
70     enum { DTtransForward, DTtransBackward, DTreflForward, DTreflBackward };
71    
72 greg 2.11 enum { DSsolar=-1, DSnir=-2, DSxbar31=-3, DSvisible=-4, DSzbar31=-5,
73     DSuprime=-6, DSvprime=-7 };
74 greg 2.1
75     #define MAXFILES 20
76    
77     struct s_dfile {
78     const char *fname; /* input data file name */
79     short type; /* BSDF data type */
80     short spectrum; /* BSDF sensor spectrum */
81     } data_file[MAXFILES];
82    
83     int ndataf = 0; /* number of data files */
84    
85     const char *spectr_file[MAXFILES]; /* custom spectral curve input */
86    
87     const char top_level_name[] = "WindowElement";
88    
89 greg 2.3 static char basis_definition[][256] = {
90 greg 2.1
91 greg 2.4 "\t<DataDefinition>\n"
92 greg 2.1 "\t\t<IncidentDataStructure>Columns</IncidentDataStructure>\n"
93     "\t\t<AngleBasis>\n"
94     "\t\t\t<AngleBasisName>LBNL/Klems Full</AngleBasisName>\n"
95 greg 2.4 "\t\t\t</AngleBasis>\n"
96     "\t</DataDefinition>\n",
97 greg 2.1
98 greg 2.4 "\t<DataDefinition>\n"
99 greg 2.1 "\t\t<IncidentDataStructure>Columns</IncidentDataStructure>\n"
100     "\t\t<AngleBasis>\n"
101     "\t\t\t<AngleBasisName>LBNL/Klems Half</AngleBasisName>\n"
102 greg 2.4 "\t\t\t</AngleBasis>\n"
103     "\t</DataDefinition>\n",
104 greg 2.1
105 greg 2.4 "\t<DataDefinition>\n"
106 greg 2.1 "\t\t<IncidentDataStructure>Columns</IncidentDataStructure>\n"
107     "\t\t<AngleBasis>\n"
108     "\t\t\t<AngleBasisName>LBNL/Klems Quarter</AngleBasisName>\n"
109 greg 2.4 "\t\t\t</AngleBasis>\n"
110     "\t</DataDefinition>\n",
111 greg 2.1
112 greg 2.4 "\t<DataDefinition>\n"
113     "\t\t<IncidentDataStructure>TensorTree3</IncidentDataStructure>\n"
114     "\t</DataDefinition>\n",
115    
116     "\t<DataDefinition>\n"
117     "\t\t<IncidentDataStructure>TensorTree4</IncidentDataStructure>\n"
118     "\t</DataDefinition>\n",
119 greg 2.1 };
120    
121     /* Copy data from file descriptor to stdout and close */
122     static int
123     copy_and_close(int fd)
124     {
125     int ok = 1;
126     char buf[8192];
127     int n;
128    
129     if (fd < 0)
130     return 0;
131     while ((n = read(fd, buf, sizeof(buf))) > 0)
132     if (write(fileno(stdout), buf, n) != n) {
133     ok = 0;
134     break;
135     }
136     ok &= (n == 0);
137     close(fd);
138     return ok;
139     }
140    
141     /* Allocate and assign string from file or stream */
142     static char *
143     input2str(const char *inpspec)
144     {
145     FILE *fp = NULL;
146     char *str;
147     int len, pos, n;
148    
149     if (inpspec == NULL || !*inpspec)
150     return "";
151     if (inpspec == stdin_name) { /* read from stdin */
152     fp = stdin;
153 greg 2.2 } else if (inpspec[0] == '!') { /* read from command */
154 greg 2.1 fp = popen(inpspec+1, "r");
155     if (fp == NULL) {
156     fprintf(stderr, "Cannot start process '%s'\n",
157 greg 2.2 inpspec);
158 greg 2.1 return "";
159     }
160     } else { /* else load file */
161     int fd = open(inpspec, O_RDONLY);
162     if (fd < 0) {
163     fprintf(stderr, "%s: cannot open\n", inpspec);
164     return "";
165     }
166 greg 2.12 #ifndef _WIN32 /* XXX somehow broken on Windows */
167 greg 2.1 len = lseek(fd, 0L, SEEK_END);
168 greg 2.3 if (len > 0) {
169     lseek(fd, 0L, SEEK_SET);
170     str = (char *)malloc(len+1);
171     if (str == NULL) {
172     close(fd);
173     goto memerr;
174     }
175     if (read(fd, str, len) != len) {
176     fprintf(stderr, "%s: read error\n", inpspec);
177     free(str);
178     close(fd);
179     return "";
180     }
181     str[len] = '\0';
182 greg 2.1 close(fd);
183 greg 2.3 return str;
184 greg 2.1 }
185 greg 2.12 #endif
186 greg 2.3 fp = fdopen(fd, "r"); /* not a regular file */
187 greg 2.1 }
188     /* reading from stream */
189     str = (char *)malloc((len=8192)+1);
190     if (str == NULL)
191     goto memerr;
192     pos = 0;
193     while ((n = read(fileno(fp), str+pos, len-pos)) > 0)
194     if ((pos += n) >= len) { /* need more space? */
195     str = (char *)realloc(str, (len += len>>2) + 1);
196     if (str == NULL)
197     goto memerr;
198     }
199     if (n < 0) {
200     fprintf(stderr, "%s: read error\n", inpspec);
201     free(str);
202     str = "";
203     } else { /* tidy up result */
204     str[pos] = '\0';
205     str = (char *)realloc(str, (len=pos)+1);
206     if (str == NULL)
207     goto memerr;
208     }
209 greg 2.2 if (inpspec[0] != '!')
210 greg 2.1 fclose(fp);
211     else if (pclose(fp))
212 greg 2.2 fprintf(stderr, "Error running command '%s'\n", inpspec);
213 greg 2.1 return str;
214     memerr:
215     fprintf(stderr, "%s: error allocating memory\n", inpspec);
216     if (fp != NULL)
217 greg 2.2 (inpspec[0] == '!') ? pclose(fp) : fclose(fp);
218 greg 2.1 return "";
219     }
220    
221     /* Make material assignments in field_assignment to XML fields */
222     static int
223     mat_assignments(const char *caller, const char *fn, ezxml_t wtl)
224     {
225     int i;
226    
227     wtl = ezxml_child(wtl, "Material");
228     if (wtl == NULL) {
229     fprintf(stderr, "%s: missing <Material> tag\n", fn);
230     return 0;
231     }
232     for (i = 0; i < nfield_assign; i++) {
233     const char *fnext = field_assignment[i];
234     for ( ; ; ) {
235 greg 2.5 int added = 0;
236 greg 2.1 ezxml_t fld;
237     char sbuf[512];
238     int j;
239    
240     while (isspace(*fnext))
241     ++fnext;
242     if (!*fnext)
243     break;
244 greg 2.3 for (j = 0; *fnext != '=' && !isspace(*fnext); ) {
245 greg 2.1 if (!*fnext | (*fnext == FASEP) |
246     (j >= sizeof(sbuf)-1)) {
247     fprintf(stderr,
248     "%s: bad tag name in assignment '%s'\n",
249     caller, field_assignment[i]);
250     return 0;
251     }
252     sbuf[j++] = *fnext++;
253     }
254 greg 2.2 sbuf[j] = '\0'; /* check known field */
255 greg 2.1 for (j = 0; XMLfieldID[j].nickName[0]; j++)
256 greg 2.2 if (!strcasecmp(sbuf, XMLfieldID[j].nickName) ||
257     !strcasecmp(sbuf, XMLfieldID[j].fullName)) {
258 greg 2.1 strcpy(sbuf, XMLfieldID[j].fullName);
259     break;
260     }
261     /* check if tag exists */
262     fld = ezxml_child(wtl, sbuf);
263     if (fld == NULL) { /* otherwise, create one */
264 greg 2.3 if (!XMLfieldID[j].nickName[0])
265     fprintf(stderr,
266     "%s: warning - adding tag <%s>\n",
267     fn, sbuf);
268 greg 2.5 ezxml_add_txt(wtl, "\t");
269 greg 2.1 fld = ezxml_add_child_d(wtl, sbuf, strlen(wtl->txt));
270 greg 2.5 ++added;
271 greg 2.1 }
272     if (XMLfieldID[j].has_unit)
273     ezxml_set_attr(fld, "unit", attr_unit);
274 greg 2.3 XMLfieldID[j].win_need = 0;
275 greg 2.1 while (isspace(*fnext))
276     ++fnext;
277     if (*fnext++ != '=') {
278     fprintf(stderr,
279     "%s: missing '=' in assignment '%s'\n",
280     caller, field_assignment[i]);
281     return 0;
282     }
283 greg 2.3 for (j = 0; *fnext && *fnext != FASEP; ) {
284 greg 2.1 if (j >= sizeof(sbuf)-1) {
285     fprintf(stderr,
286     "%s: field too long in '%s'\n",
287     caller, field_assignment[i]);
288     return 0;
289     }
290     sbuf[j++] = *fnext++;
291     }
292     sbuf[j] = '\0';
293     ezxml_set_txt_d(fld, sbuf);
294 greg 2.5 if (added)
295     ezxml_add_txt(wtl, "\n\t");
296 greg 2.1 fnext += (*fnext == FASEP);
297     }
298     }
299 greg 2.3 /* check required WINDOW settings */
300     if (xml_input == win6_template)
301     for (i = 0; XMLfieldID[i].nickName[0]; i++)
302     if (XMLfieldID[i].win_need &&
303 greg 2.10 !ezxml_txt(ezxml_child(wtl,XMLfieldID[i].fullName))[0])
304 greg 2.3 fprintf(stderr,
305 greg 2.10 "%s: warning - missing '%s' assignment for WINDOW <%s>\n",
306 greg 2.3 caller, XMLfieldID[i].nickName,
307     XMLfieldID[i].fullName);
308 greg 2.10 return 1;
309 greg 2.1 }
310    
311     /* Complete angle basis specification */
312     static int
313     finish_angle_basis(ezxml_t ab)
314     {
315     const char *bn = ezxml_txt(ezxml_child(ab, "AngleBasisName"));
316     int i, n = nabases;
317     char buf[32];
318    
319     if (!*bn) {
320     fputs("Internal error - missing <AngleBasisName>!\n", stderr);
321     return 0;
322     }
323     while (n-- > 0)
324     if (!strcasecmp(bn, abase_list[n].name))
325     break;
326     if (n < 0) {
327     fprintf(stderr, "Internal error - unknown angle basis '%s'", bn);
328     return 0;
329     }
330     for (i = 0; abase_list[n].lat[i].nphis; i++) {
331     ezxml_t tb, abb = ezxml_add_child(ab, "AngleBasisBlock",
332     strlen(ab->txt));
333     sprintf(buf, "%g", i ?
334     .5*(abase_list[n].lat[i].tmin + abase_list[n].lat[i+1].tmin) :
335     .0);
336 greg 2.4 ezxml_add_txt(abb, "\n\t\t\t\t");
337 greg 2.1 ezxml_set_txt_d(ezxml_add_child(abb,"Theta",strlen(abb->txt)), buf);
338     sprintf(buf, "%d", abase_list[n].lat[i].nphis);
339 greg 2.4 ezxml_add_txt(abb, "\n\t\t\t\t");
340 greg 2.1 ezxml_set_txt_d(ezxml_add_child(abb,"nPhis",strlen(abb->txt)), buf);
341 greg 2.4 ezxml_add_txt(abb, "\n\t\t\t\t");
342 greg 2.1 tb = ezxml_add_child(abb, "ThetaBounds", strlen(abb->txt));
343 greg 2.4 ezxml_add_txt(tb, "\n\t\t\t\t\t");
344 greg 2.1 sprintf(buf, "%g", abase_list[n].lat[i].tmin);
345 greg 2.4 ezxml_set_txt_d(ezxml_add_child(tb,"LowerTheta",strlen(tb->txt)), buf);
346     ezxml_add_txt(tb, "\n\t\t\t\t\t");
347 greg 2.1 sprintf(buf, "%g", abase_list[n].lat[i+1].tmin);
348 greg 2.4 ezxml_set_txt_d(ezxml_add_child(tb,"UpperTheta",strlen(tb->txt)), buf);
349     ezxml_add_txt(tb, "\n\t\t\t\t");
350     ezxml_add_txt(abb, "\n\t\t\t");
351     ezxml_add_txt(ab, "\n\t\t\t");
352 greg 2.1 }
353     return 1;
354     }
355    
356     /* Determine our angle basis from current tags */
357     static int
358     determine_angle_basis(const char *fn, ezxml_t wtl)
359     {
360     const char *ids;
361     int i;
362    
363     wtl = ezxml_child(wtl, "DataDefinition");
364     if (wtl == NULL)
365     return -1;
366     ids = ezxml_txt(ezxml_child(wtl, "IncidentDataStructure"));
367 greg 2.4 if (!ids[0])
368 greg 2.1 return -1;
369     for (i = 0; i < ABend; i++) {
370     ezxml_t parsed = ezxml_parse_str(basis_definition[i],
371     strlen(basis_definition[i]));
372     int match = 0;
373     if (!strcmp(ids, ezxml_txt(ezxml_child(parsed,
374     "IncidentDataStructure")))) {
375     const char *abn0 = ezxml_txt(
376     ezxml_child(ezxml_child(wtl,
377     "AngleBasis"), "AngleBasisName"));
378     const char *abn1 = ezxml_txt(
379     ezxml_child(ezxml_child(parsed,
380     "AngleBasis"), "AngleBasisName"));
381     match = !strcmp(abn0, abn1);
382     }
383     ezxml_free(parsed);
384     if (match)
385     return i;
386     }
387     return -1;
388     }
389    
390 greg 2.7 /* Filter Klems angle basis, factoring out incident projected solid angle */
391 greg 2.6 static int
392     filter_klems_matrix(FILE *fp)
393     {
394     #define MAX_COLUMNS 145
395 greg 2.7 const char *bn = klems_basis_name[angle_basis];
396 greg 2.6 float col_corr[MAX_COLUMNS];
397     int i, j, n = nabases;
398     /* get angle basis */
399     while (n-- > 0)
400     if (!strcasecmp(bn, abase_list[n].name))
401     break;
402     if (n < 0)
403     return 0;
404     if (abase_list[n].nangles > MAX_COLUMNS) {
405 greg 2.7 fputs("Internal error - too many Klems columns!\n", stderr);
406 greg 2.6 return 0;
407     }
408     /* get correction factors */
409     for (j = abase_list[n].nangles; j--; )
410     col_corr[j] = 1.f / io_getohm(j, &abase_list[n]);
411     /* read/correct/write matrix */
412     for (i = 0; i < abase_list[n].nangles; i++) {
413     for (j = 0; j < abase_list[n].nangles; j++) {
414     double d;
415     if (fscanf(fp, "%lf", &d) != 1)
416     return 0;
417 greg 2.7 if (d < -1e-3) {
418     fputs("Negative BSDF data!\n", stderr);
419     return 0;
420     }
421     printf(" %.3e", d*col_corr[j]*(d > 0));
422 greg 2.6 }
423     fputc('\n', stdout);
424     }
425 greg 2.7 while ((i = getc(fp)) != EOF)
426     if (!isspace(i)) {
427     fputs("Unexpected data past EOF\n", stderr);
428     return 0;
429     }
430     return 1; /* all is good */
431 greg 2.6 #undef MAX_COLUMNS
432     }
433    
434 greg 2.1 /* Write out BSDF data block with surrounding tags */
435     static int
436     writeBSDFblock(const char *caller, struct s_dfile *df)
437     {
438 greg 2.7 int correct_klems = correct_solid_angle;
439 greg 2.1 char *cp;
440    
441     puts("\t<WavelengthData>");
442     puts("\t\t<LayerNumber>System</LayerNumber>");
443     switch (df->spectrum) {
444     case DSvisible:
445     puts("\t\t<Wavelength unit=\"Integral\">Visible</Wavelength>");
446 greg 2.7 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
447 greg 2.1 puts("\t\t<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum>");
448     break;
449     case DSxbar31:
450     puts("\t\t<Wavelength unit=\"Integral\">CIE-X</Wavelength>");
451 greg 2.14 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
452 greg 2.1 puts("\t\t<DetectorSpectrum>ASTM E308 1931 X.dsp</DetectorSpectrum>");
453     break;
454     case DSzbar31:
455     puts("\t\t<Wavelength unit=\"Integral\">CIE-Z</Wavelength>");
456 greg 2.14 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
457 greg 2.1 puts("\t\t<DetectorSpectrum>ASTM E308 1931 Z.dsp</DetectorSpectrum>");
458     break;
459 greg 2.11 case DSuprime:
460 greg 2.13 puts("\t\t<Wavelength unit=\"Integral\">CIE-u</Wavelength>");
461 greg 2.14 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
462 greg 2.11 break;
463     case DSvprime:
464 greg 2.13 puts("\t\t<Wavelength unit=\"Integral\">CIE-v</Wavelength>");
465 greg 2.14 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
466 greg 2.11 break;
467 greg 2.1 case DSsolar:
468     puts("\t\t<Wavelength unit=\"Integral\">Solar</Wavelength>");
469 greg 2.14 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
470 greg 2.1 puts("\t\t<DetectorSpectrum>None</DetectorSpectrum>");
471     break;
472     case DSnir:
473     puts("\t\t<Wavelength unit=\"Integral\">NIR</Wavelength>");
474 greg 2.14 puts("\t\t<SourceSpectrum>PLACE_HOLDER</SourceSpectrum>");
475 greg 2.1 puts("\t\t<DetectorSpectrum>PLACE_HOLDER</DetectorSpectrum>");
476     break;
477     default:
478     cp = strrchr(spectr_file[df->spectrum], '.');
479     if (cp != NULL)
480     *cp = '\0';
481     printf("\t\t<Wavelength unit=\"Integral\">%s</Wavelength>\n",
482     spectr_file[df->spectrum]);
483     if (cp != NULL)
484     *cp = '.';
485 greg 2.14 puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>");
486 greg 2.1 printf("\t\t<DetectorSpectrum>%s</DetectorSpectrum>\n",
487     spectr_file[df->spectrum]);
488     break;
489     }
490     puts("\t\t<WavelengthDataBlock>");
491     fputs("\t\t\t<WavelengthDataDirection>", stdout);
492     switch (df->type) {
493     case DTtransForward:
494     fputs("Transmission Front", stdout);
495     break;
496     case DTtransBackward:
497     fputs("Transmission Back", stdout);
498     break;
499     case DTreflForward:
500     fputs("Reflection Front", stdout);
501     break;
502     case DTreflBackward:
503     fputs("Reflection Back", stdout);
504     break;
505     default:
506     fprintf(stderr, "%s: internal - bad BSDF type (%d)\n", caller, df->type);
507     return 0;
508     }
509     puts("</WavelengthDataDirection>");
510     switch (angle_basis) {
511     case ABklemsFull:
512     case ABklemsHalf:
513     case ABklemsQuarter:
514 greg 2.7 fputs("\t\t\t<ColumnAngleBasis>", stdout);
515     fputs(klems_basis_name[angle_basis], stdout);
516     puts("</ColumnAngleBasis>");
517     fputs("\t\t\t<RowAngleBasis>", stdout);
518     fputs(klems_basis_name[angle_basis], stdout);
519     puts("</RowAngleBasis>");
520 greg 2.1 break;
521     case ABtensorTree3:
522     case ABtensorTree4:
523     puts("\t\t\t<AngleBasis>LBNL/Shirley-Chiu</AngleBasis>");
524 greg 2.7 correct_klems = 0;
525 greg 2.1 break;
526     default:
527     fprintf(stderr, "%s: bad angle basis (%d)\n", caller, angle_basis);
528     return 0;
529     }
530     puts("\t\t\t<ScatteringDataType>BTDF</ScatteringDataType>");
531     puts("\t\t\t<ScatteringData>");
532     fflush(stdout);
533 greg 2.7 if (correct_klems) { /* correct Klems matrix data */
534 greg 2.6 FILE *fp = stdin;
535     if (df->fname[0] == '!')
536     fp = popen(df->fname+1, "r");
537     else if (df->fname != stdin_name)
538     fp = fopen(df->fname, "r");
539     if (fp == NULL) {
540     fprintf(stderr, "%s: cannot open '%s'\n",
541     caller, df->fname);
542     return 0;
543     }
544     if (!filter_klems_matrix(fp)) {
545     fprintf(stderr, "%s: Klems data error from '%s'\n",
546     caller, df->fname);
547     return 0;
548     }
549     if (df->fname[0] != '!') {
550     fclose(fp);
551     } else if (pclose(fp)) {
552     fprintf(stderr, "%s: error running '%s'\n",
553     caller, df->fname);
554     return 0;
555     }
556     } else if (df->fname == stdin_name) {
557 greg 2.1 copy_and_close(fileno(stdin));
558 greg 2.2 } else if (df->fname[0] != '!') {
559 greg 2.1 if (!copy_and_close(open(df->fname, O_RDONLY))) {
560     fprintf(stderr, "%s: error reading from '%s'\n",
561     caller, df->fname);
562     return 0;
563     }
564     } else if (system(df->fname+1)) {
565 greg 2.2 fprintf(stderr, "%s: error running '%s'\n", caller, df->fname);
566 greg 2.1 return 0;
567     }
568     puts("\t\t\t</ScatteringData>");
569     puts("\t\t</WavelengthDataBlock>");
570     puts("\t</WavelengthData>");
571     return 1;
572     }
573    
574     /* Write out XML, interpolating BSDF data block(s) */
575     static int
576     writeBSDF(const char *caller, ezxml_t fl)
577     {
578 greg 2.2 char *xml = ezxml_toxml(fl); /* store XML in string */
579 greg 2.1 int ei, i;
580     /* locate trailer */
581     for (ei = strlen(xml)-strlen("</Layer></Optical></WindowElement>");
582     ei >= 0; ei--)
583     if (!strncmp(xml+ei, "</Layer>", 8))
584     break;
585     if (ei < 0) {
586     fprintf(stderr, "%s: internal - cannot find trailer\n",
587     caller);
588     free(xml);
589     return 0;
590     }
591 greg 2.15 puts("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
592 greg 2.16 for (i = 0; i < ncomm; i++)
593     printf("<!-- %s -->\n", commlist[i]);
594 greg 2.1 fflush(stdout); /* write previous XML info. */
595     if (write(fileno(stdout), xml, ei) != ei) {
596     free(xml);
597     return 0;
598     }
599     for (i = 0; i < ndataf; i++) /* interpolate new data */
600     if (!writeBSDFblock(caller, &data_file[i])) {
601     free(xml);
602     return 0;
603     }
604     fputs(xml+ei, stdout); /* write trailer */
605 greg 2.2 free(xml); /* free string */
606 greg 2.4 fputc('\n', stdout);
607 greg 2.1 return (fflush(stdout) == 0);
608     }
609    
610     /* Insert BSDF data into XML wrapper */
611     static int
612     wrapBSDF(const char *caller)
613     {
614 greg 2.2 const char *xml_path = xml_input;
615 greg 2.1 ezxml_t fl, wtl;
616     /* load previous XML/template */
617 greg 2.2 if (xml_input == stdin_name) {
618     fl = ezxml_parse_fp(stdin);
619     } else if (xml_input[0] == '!') {
620     FILE *pfp = popen(xml_input+1, "r");
621     if (pfp == NULL) {
622     fprintf(stderr, "%s: cannot start process '%s'\n",
623     caller, xml_input);
624     return 0;
625     }
626     fl = ezxml_parse_fp(pfp);
627     if (pclose(pfp)) {
628     fprintf(stderr, "%s: error running '%s'\n",
629     caller, xml_input);
630     return 0;
631     }
632     } else {
633     xml_path = getpath((char *)xml_input, getrlibpath(), R_OK);
634     if (xml_path == NULL) {
635     fprintf(stderr, "%s: cannot find XML file named '%s'\n",
636     caller, xml_input==NULL ? "NULL" : xml_input);
637     return 0;
638     }
639     fl = ezxml_parse_file(xml_path);
640 greg 2.1 }
641     if (fl == NULL) {
642 greg 2.2 fprintf(stderr, "%s: cannot load XML '%s'\n", caller, xml_path);
643 greg 2.1 return 0;
644     }
645     if (ezxml_error(fl)[0]) {
646 greg 2.2 fprintf(stderr, "%s: error in XML '%s': %s\n", caller, xml_path,
647 greg 2.1 ezxml_error(fl));
648     goto failure;
649     }
650     if (strcmp(ezxml_name(fl), top_level_name)) {
651     fprintf(stderr, "%s: top level in XML '%s' not '%s'\n",
652     caller, xml_path, top_level_name);
653     goto failure;
654     }
655     wtl = ezxml_child(fl, "FileType");
656     if (wtl != NULL && strcmp(ezxml_txt(wtl), "BSDF")) {
657     fprintf(stderr, "%s: wrong FileType in XML '%s' (must be 'BSDF')",
658     caller, xml_path);
659     goto failure;
660     }
661     wtl = ezxml_child(ezxml_child(fl, "Optical"), "Layer");
662     if (wtl == NULL) {
663     fprintf(stderr, "%s: no optical layers in XML '%s'",
664     caller, xml_path);
665     goto failure;
666     }
667     /* make material assignments */
668 greg 2.3 if (!mat_assignments(caller, xml_path, wtl))
669 greg 2.1 goto failure;
670     if (mgf_geometry != NULL) { /* add geometry if specified */
671     ezxml_t geom = ezxml_child(wtl, "Geometry");
672     if (geom == NULL)
673 greg 2.3 geom = ezxml_add_child(wtl, "Geometry", strlen(wtl->txt));
674 greg 2.1 ezxml_set_attr(geom, "format", "MGF");
675     geom = ezxml_child(geom, "MGFblock");
676     if (geom == NULL) {
677     geom = ezxml_child(wtl, "Geometry");
678 greg 2.3 geom = ezxml_add_child(geom, "MGFblock", 0);
679 greg 2.1 }
680     ezxml_set_attr(geom, "unit", attr_unit);
681     ezxml_set_txt(geom, input2str(mgf_geometry));
682     if (geom->txt[0])
683     ezxml_set_flag(geom, EZXML_TXTM);
684     }
685     /* check basis */
686     if (angle_basis != ABdefault) {
687 greg 2.4 size_t offset = 0;
688 greg 2.1 ezxml_t ab, dd = ezxml_child(wtl, "DataDefinition");
689 greg 2.4 if (dd != NULL) {
690     offset = dd->off;
691 greg 2.5 if (dd->child != NULL)
692     fprintf(stderr,
693 greg 2.1 "%s: warning - replacing existing <DataDefinition> in '%s'\n",
694     caller, xml_path);
695 greg 2.4 ezxml_remove(dd);
696     } else
697     offset = strlen(wtl->txt);
698     dd = ezxml_insert(ezxml_parse_str(basis_definition[angle_basis],
699 greg 2.1 strlen(basis_definition[angle_basis])),
700 greg 2.4 wtl, offset);
701 greg 2.1 if ((ab = ezxml_child(dd, "AngleBasis")) != NULL &&
702     !finish_angle_basis(ab))
703     goto failure;
704     } else if ((angle_basis = determine_angle_basis(xml_path, wtl)) < 0) {
705     fprintf(stderr, "%s: need -a option to set angle basis\n",
706     caller);
707     goto failure;
708     }
709     /* write & add BSDF data blocks */
710     if (!writeBSDF(caller, fl))
711     goto failure;
712     ezxml_free(fl); /* all done */
713     return 1;
714     failure:
715     ezxml_free(fl);
716     return 0;
717     }
718    
719     /* Report usage and exit */
720     static void
721     UsageExit(const char *pname)
722     {
723     fputs("Usage: ", stderr);
724     fputs(pname, stderr);
725 greg 2.11 fputs(" [-W][-c][-a {kf|kh|kq|t3|t4}][-u unit][-g geom][-f 'x=string;y=string']", stderr);
726 greg 2.16 fputs(" [-s spectr][-tb inp][-tf inp][-rb inp][-rf inp][-C comm]", stderr);
727 greg 2.2 fputs(" [input.xml]\n", stderr);
728 greg 2.1 exit(1);
729     }
730    
731     /* Load XML file and use to wrap BSDF data (or modify fields) */
732     int
733     main(int argc, char *argv[])
734     {
735     int cur_spectrum = DSvisible;
736     int ncust_spec = 0;
737     int used_stdin = 0;
738     int units_set = 0;
739     int i;
740     /* get/check arguments */
741     for (i = 1; i < argc && argv[i][0] == '-'; i++) {
742     switch (argv[i][1]) {
743     case 'W': /* customize for WINDOW 6 output */
744     xml_input = win6_template;
745     continue;
746     case 'f': /* field assignment(s) */
747     if (++i >= argc)
748     UsageExit(argv[0]);
749     if (nfield_assign >= MAXASSIGN) {
750     fprintf(stderr, "%s: too many -f options",
751     argv[0]);
752     return 1;
753     }
754     field_assignment[nfield_assign++] = argv[i];
755     continue;
756     case 'u': /* unit */
757     if (++i >= argc)
758     UsageExit(argv[0]);
759     if (units_set++) {
760     fprintf(stderr, "%s: only one -u option allowed\n",
761     argv[0]);
762     return 1;
763     }
764 greg 2.2 if (strstr(legal_units, argv[i]) == NULL) {
765     fprintf(stderr, "%s: -u unit must be one of (%s)\n",
766 greg 2.1 argv[0], legal_units);
767     return 1;
768     }
769     attr_unit = argv[i];
770     continue;
771     case 'a': /* angle basis */
772     if (++i >= argc)
773     UsageExit(argv[0]);
774     if (angle_basis != ABdefault) {
775     fprintf(stderr, "%s: only one -a option allowed\n",
776     argv[0]);
777     return 1;
778     }
779     if (!strcasecmp(argv[i], "kf"))
780     angle_basis = ABklemsFull;
781     else if (!strcasecmp(argv[i], "kh"))
782     angle_basis = ABklemsHalf;
783     else if (!strcasecmp(argv[i], "kq"))
784     angle_basis = ABklemsQuarter;
785     else if (!strcasecmp(argv[i], "t3"))
786     angle_basis = ABtensorTree3;
787     else if (!strcasecmp(argv[i], "t4"))
788     angle_basis = ABtensorTree4;
789     else
790     UsageExit(argv[0]);
791     continue;
792 greg 2.7 case 'c': /* correct solid angle */
793 greg 2.9 correct_solid_angle = 1;
794 greg 2.7 continue;
795 greg 2.16 case 'C': /* comment */
796     if (ncomm >= MAXCOMM) {
797     fprintf(stderr, "%s: too many comments\n",
798     argv[0]);
799     return 1;
800     }
801     if (strchr(argv[++i], '>') != NULL) {
802     fprintf(stderr, "%s: illegal character in comment\n",
803     argv[0]);
804     return 1;
805     }
806     commlist[ncomm++] = argv[i];
807     continue;
808 greg 2.1 case 't': /* transmission */
809     if (i >= argc-1)
810     UsageExit(argv[0]);
811     if (ndataf >= MAXFILES) {
812     fprintf(stderr, "%s: too many data files\n",
813     argv[0]);
814     return 1;
815     }
816     if (!strcmp(argv[i], "-tf"))
817     data_file[ndataf].type = DTtransForward;
818     else if (!strcmp(argv[i], "-tb"))
819     data_file[ndataf].type = DTtransBackward;
820     else
821     UsageExit(argv[0]);
822     if (!strcmp(argv[++i], "-")) {
823     if (used_stdin++) UsageExit(argv[i]);
824     argv[i] = (char *)stdin_name;
825     }
826     data_file[ndataf].fname = argv[i];
827     data_file[ndataf].spectrum = cur_spectrum;
828     ndataf++;
829     continue;
830     case 'r': /* reflection */
831     if (i >= argc-1)
832     UsageExit(argv[0]);
833     if (ndataf >= MAXFILES) {
834     fprintf(stderr, "%s: too many data files\n",
835     argv[0]);
836     return 1;
837     }
838     if (!strcmp(argv[i], "-rf"))
839     data_file[ndataf].type = DTreflForward;
840     else if (!strcmp(argv[i], "-rb"))
841     data_file[ndataf].type = DTreflBackward;
842     else
843     UsageExit(argv[0]);
844     if (!strcmp(argv[++i], "-")) {
845     if (used_stdin++) UsageExit(argv[i]);
846     argv[i] = (char *)stdin_name;
847     }
848     data_file[ndataf].fname = argv[i];
849 greg 2.8 data_file[ndataf].spectrum = cur_spectrum;
850     ndataf++;
851 greg 2.1 continue;
852     case 's': /* spectrum name or input file */
853     if (++i >= argc)
854     UsageExit(argv[0]);
855     if (!strcasecmp(argv[i], "Solar"))
856     cur_spectrum = DSsolar;
857     else if (!strcasecmp(argv[i], "Visible") ||
858     !strcasecmp(argv[i], "CIE-Y"))
859     cur_spectrum = DSvisible;
860     else if (!strcasecmp(argv[i], "CIE-X"))
861     cur_spectrum = DSxbar31;
862     else if (!strcasecmp(argv[i], "CIE-Z"))
863     cur_spectrum = DSzbar31;
864 greg 2.11 else if (!strcasecmp(argv[i], "CIE-u"))
865     cur_spectrum = DSuprime;
866     else if (!strcasecmp(argv[i], "CIE-v"))
867     cur_spectrum = DSvprime;
868 greg 2.1 else if (!strcasecmp(argv[i], "NIR"))
869     cur_spectrum = DSnir;
870     else {
871     if (!strcmp(argv[i], "-")) {
872     fprintf(stderr,
873     "%s: cannot read spectra from stdin",
874     argv[0]);
875     return 1;
876     }
877     cur_spectrum = ncust_spec;
878     spectr_file[ncust_spec++] = argv[i];
879     }
880     continue;
881     case 'g': /* MGF geometry file */
882     if (i >= argc-1)
883     UsageExit(argv[0]);
884     if (mgf_geometry != NULL) {
885     fprintf(stderr, "%s: only one -g option allowed\n",
886     argv[0]);
887     return 1;
888     }
889     if (!strcmp(argv[++i], "-")) {
890     if (used_stdin++) UsageExit(argv[i]);
891     argv[i] = (char *)stdin_name;
892     }
893     mgf_geometry = argv[i];
894     continue;
895     case '\0': /* input XML from stdin */
896     break;
897     default:
898     UsageExit(argv[0]);
899     break;
900     }
901     break;
902     }
903     doneOptions: /* get XML input */
904     if (i >= argc) {
905     if (xml_input == NULL)
906     xml_input = def_template;
907     } else if ((i < argc-1) | (xml_input != NULL)) {
908     fprintf(stderr, "%s: only one XML input allowed\n", argv[0]);
909     UsageExit(argv[0]);
910     } else if (!strcmp(argv[i], "-")) {
911     if (used_stdin++) UsageExit(argv[0]);
912     xml_input = stdin_name;
913     } else {
914     xml_input = argv[i];
915     }
916     /* wrap it! */
917     return !wrapBSDF(argv[0]);
918     }