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root/radiance/ray/src/common/header.c
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Comparing ray/src/common/header.c (file contents):
Revision 2.11 by greg, Sat Feb 22 02:07:22 2003 UTC vs.
Revision 2.51 by greg, Sat Jun 7 05:09:45 2025 UTC

# Line 4 | Line 4 | static const char      RCSid[] = "$Id$";
4   /*
5   *  header.c - routines for reading and writing information headers.
6   *
7 < *  Externals declared in resolu.h
7 > *  Externals declared in rtio.h
8   *
9   *  newheader(t,fp)     start new information header identified by string t
10 – *  isheadid(s)         returns true if s is a header id line
10   *  headidval(r,s)      copy header identifier value in s to r
11 < *  dateval(t,s)        get capture date value
12 < *  isdate(s)           returns true if s is a date line
13 < *  fputdate(t,fp)      put out the given capture date and time
11 > *  dateval(t,s)        get capture date value as UTC
12 > *  gmtval(t,s)         get GMT as UTC
13 > *  fputdate(t,fp)      put out the given UTC
14   *  fputnow(fp)         put out the current date and time
16 – *  printargs(ac,av,fp) print an argument list to fp, followed by '\n'
17 – *  isformat(s)         returns true if s is of the form "FORMAT=*"
15   *  formatval(r,s)      copy the format value in s to r
16   *  fputformat(s,fp)    write "FORMAT=%s" to fp
17 + *  nativebigendian()   are we native on big-endian machine?
18 + *  isbigendian(s)      header line matches "BigEndian=1" (-1 if irrelevant)
19 + *  fputendian(fp)      write native endianness in BigEndian= line
20   *  getheader(fp,f,p)   read header from fp, calling f(s,p) on each line
21   *  globmatch(pat, str) check for glob match of str against pat
22   *  checkheader(i,p,o)  check header format from i against p and copy to o
# Line 24 | Line 24 | static const char      RCSid[] = "$Id$";
24   *  To copy header from input to output, use getheader(fin, fputs, fout)
25   */
26  
27 < /* ====================================================================
28 < * The Radiance Software License, Version 1.0
29 < *
30 < * Copyright (c) 1990 - 2002 The Regents of the University of California,
31 < * through Lawrence Berkeley National Laboratory.   All rights reserved.
32 < *
33 < * Redistribution and use in source and binary forms, with or without
34 < * modification, are permitted provided that the following conditions
35 < * are met:
36 < *
37 < * 1. Redistributions of source code must retain the above copyright
38 < *         notice, this list of conditions and the following disclaimer.
39 < *
40 < * 2. Redistributions in binary form must reproduce the above copyright
41 < *       notice, this list of conditions and the following disclaimer in
42 < *       the documentation and/or other materials provided with the
43 < *       distribution.
44 < *
45 < * 3. The end-user documentation included with the redistribution,
46 < *           if any, must include the following acknowledgment:
47 < *             "This product includes Radiance software
48 < *                 (http://radsite.lbl.gov/)
49 < *                 developed by the Lawrence Berkeley National Laboratory
50 < *               (http://www.lbl.gov/)."
51 < *       Alternately, this acknowledgment may appear in the software itself,
52 < *       if and wherever such third-party acknowledgments normally appear.
53 < *
54 < * 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
55 < *       and "The Regents of the University of California" must
56 < *       not be used to endorse or promote products derived from this
57 < *       software without prior written permission. For written
58 < *       permission, please contact [email protected].
59 < *
60 < * 5. Products derived from this software may not be called "Radiance",
61 < *       nor may "Radiance" appear in their name, without prior written
62 < *       permission of Lawrence Berkeley National Laboratory.
63 < *
64 < * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
65 < * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
66 < * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
67 < * DISCLAIMED.   IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
68 < * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
69 < * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
70 < * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
71 < * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
72 < * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
73 < * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
74 < * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
75 < * SUCH DAMAGE.
76 < * ====================================================================
77 < *
78 < * This software consists of voluntary contributions made by many
79 < * individuals on behalf of Lawrence Berkeley National Laboratory.   For more
80 < * information on Lawrence Berkeley National Laboratory, please see
81 < * <http://www.lbl.gov/>.
82 < */
27 > #include "copyright.h"
28  
84 – #include  <stdio.h>
85 – #include  <string.h>
86 – #include  <time.h>
29   #include  <ctype.h>
30  
31 < #define  MAXLINE        512
31 > #include  "tiff.h"      /* for int32 */
32 > #include  "rtio.h"
33 > #include  "color.h"
34 > #include  "resolu.h"
35  
36 < #ifndef BSD
92 < #define  index  strchr
93 < #endif
36 > #define  MAXLINE        2048
37  
38 < extern char  *index();
38 > extern time_t           timegm(struct tm *tm);
39  
40 < char  HDRSTR[] = "#?";          /* information header magic number */
40 > const char  HDRSTR[] = "#?";            /* information header magic number */
41  
42 < char  FMTSTR[] = "FORMAT=";     /* format identifier */
42 > const char  FMTSTR[] = "FORMAT=";       /* format identifier */
43  
44 < char  TMSTR[] = "CAPDATE=";     /* capture date identifier */
44 > const char  TMSTR[] = "CAPDATE=";       /* capture date identifier */
45 > const char  GMTSTR[] = "GMT=";          /* GMT identifier */
46  
47 < static int mycheck();
47 > const char  BIGEND[] = "BigEndian=";    /* big-endian variable */
48  
49 + static gethfunc mycheck;
50  
51 +
52   void
53 < newheader(s, fp)                /* identifying line of information header */
54 < char  *s;
55 < register FILE  *fp;
53 > newheader(              /* identifying line of information header */
54 >        const char  *s,
55 >        FILE  *fp
56 > )
57   {
58          fputs(HDRSTR, fp);
59          fputs(s, fp);
60 <        putc('\n', fp);
60 >        fputc('\n', fp);
61   }
62  
63  
64   int
65 < headidval(r,s)                  /* get header id (return true if is id) */
66 < register char  *r, *s;
65 > headidval(                      /* get header id (return true if is id) */
66 >        char  *r,
67 >        const char      *s
68 > )
69   {
70 <        register char  *cp = HDRSTR;
70 >        const char  *cp = HDRSTR;
71  
72          while (*cp) if (*cp++ != *s++) return(0);
73          if (r == NULL) return(1);
# Line 129 | Line 78 | register char  *r, *s;
78  
79  
80   int
81 < isheadid(s)                     /* check to see if line is header id */
82 < char  *s;
81 > dateval(                /* convert capture date line to UTC */
82 >        time_t  *tloc,
83 >        const char      *s
84 > )
85   {
135 –        return(headidval(NULL, s));
136 – }
137 –
138 –
139 – int
140 – dateval(tloc, s)                /* get capture date value */
141 – time_t  *tloc;
142 – char    *s;
143 – {
86          struct tm       tms;
87 <        register char  *cp = TMSTR;
87 >        const char      *cp = TMSTR;
88  
89          while (*cp) if (*cp++ != *s++) return(0);
90          while (isspace(*s)) s++;
# Line 162 | Line 104 | char   *s;
104  
105  
106   int
107 < isdate(s)                       /* is the given line a capture date? */
108 < char *s;
107 > gmtval(                 /* convert GMT date line to UTC */
108 >        time_t  *tloc,
109 >        const char      *s
110 > )
111   {
112 <        return(dateval(NULL, s));
112 >        struct tm       tms;
113 >        const char      *cp = GMTSTR;
114 >
115 >        while (*cp) if (*cp++ != *s++) return(0);
116 >        while (isspace(*s)) s++;
117 >        if (!*s) return(0);
118 >        if (sscanf(s, "%d:%d:%d %d:%d:%d",
119 >                        &tms.tm_year, &tms.tm_mon, &tms.tm_mday,
120 >                        &tms.tm_hour, &tms.tm_min, &tms.tm_sec) != 6)
121 >                return(0);
122 >        if (tloc == NULL)
123 >                return(1);
124 >        tms.tm_mon--;
125 >        tms.tm_year -= 1900;
126 >        *tloc = timegm(&tms);
127 >        return(1);
128   }
129  
130  
131   void
132 < fputdate(tv, fp)                /* write out the given time value */
133 < time_t  tv;
134 < FILE    *fp;
132 > fputdate(               /* write out the given time value (local & GMT) */
133 >        time_t  tv,
134 >        FILE    *fp
135 > )
136   {
137 <        struct tm       *tm = localtime(&tv);
138 <        if (tm == NULL)
139 <                return;
140 <        fprintf(fp, "%s %04d:%02d:%02d %02d:%02d:%02d\n", TMSTR,
141 <                        tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
142 <                        tm->tm_hour, tm->tm_min, tm->tm_sec);
137 >        struct tm       *tms;
138 >
139 >        tms = localtime(&tv);
140 >        if (tms != NULL)
141 >                fprintf(fp, "%s %04d:%02d:%02d %02d:%02d:%02d\n", TMSTR,
142 >                                tms->tm_year+1900, tms->tm_mon+1, tms->tm_mday,
143 >                                tms->tm_hour, tms->tm_min, tms->tm_sec);
144 >        tms = gmtime(&tv);
145 >        if (tms != NULL)
146 >                fprintf(fp, "%s %04d:%02d:%02d %02d:%02d:%02d\n", GMTSTR,
147 >                                tms->tm_year+1900, tms->tm_mon+1, tms->tm_mday,
148 >                                tms->tm_hour, tms->tm_min, tms->tm_sec);
149   }
150  
151  
152   void
153 < fputnow(fp)                     /* write out the current time */
154 < FILE    *fp;
153 > fputnow(                        /* write out the current time */
154 >        FILE    *fp
155 > )
156   {
157          time_t  tv;
158          time(&tv);
# Line 193 | Line 160 | FILE   *fp;
160   }
161  
162  
163 + int
164 + formatval(                      /* get format value (return true if format) */
165 +        char  fmt[MAXFMTLEN],
166 +        const char  *s
167 + )
168 + {
169 +        const char  *cp = FMTSTR;
170 +        char  *r = fmt;
171 +                                /* check against format string */
172 +        while (*cp) if (*cp++ != *s++) return(0);
173 +        while (isspace(*s)) s++;
174 +        if (!*s) return(0);
175 +        if (r == NULL)          /* just checking if format? */
176 +                return(1);
177 +        do                      /* copy format ID */
178 +                *r++ = *s++;
179 +        while (*s && r-fmt < MAXFMTLEN-1);
180 +
181 +        do                      /* remove trailing white space */
182 +                *r-- = '\0';
183 +        while (r > fmt && isspace(*r));
184 +
185 +        return(1);
186 + }
187 +
188 +
189   void
190 < printargs(ac, av, fp)           /* print arguments to a file */
191 < int  ac;
192 < char  **av;
193 < FILE  *fp;
190 > fputformat(             /* put out a format value */
191 >        const char  *s,
192 >        FILE  *fp
193 > )
194   {
195 <        int  quote;
195 >        int     align = 0;
196  
197 <        while (ac-- > 0) {
198 <                fputword(*av++, fp);
199 <                fputc(ac ? ' ' : '\n', fp);
197 >        fputs(FMTSTR, fp);
198 >        fputs(s, fp);
199 >                        /* pad to align binary type for mmap() */
200 >        if (globmatch(PICFMT, s))
201 >                align = 0;      /* not needed for picture data */
202 >        else if (!strncmp("float", s, 5))
203 >                align = sizeof(float);
204 >        else if (!strncmp("double", s, 6))
205 >                align = sizeof(double);
206 >        else if (!strncmp("16-bit", s, 6))
207 >                align = 2;
208 >        else if (!strncmp("32-bit", s, 6))
209 >                align = 4;
210 >        else if (!strncmp("64-bit", s, 6))
211 >                align = 8;
212 >        if (align) {
213 >                long    pos = ftell(fp);
214 >                if (pos >= 0) {
215 >                        pos = (pos + 2) % align;
216 >                        if (pos) align -= pos;
217 >                        else align = 0;
218 >                } else
219 >                        align = 0;
220          }
221 +        while (align-- > 0)
222 +                putc(' ', fp);
223 +        fputc('\n', fp);
224   }
225  
226  
227   int
228 < formatval(r, s)                 /* get format value (return true if format) */
213 < register char  *r;
214 < register char  *s;
228 > nativebigendian()       /* are we native on a big-endian machine? */
229   {
230 <        register char  *cp = FMTSTR;
230 >        union { int32 i; char c[4]; } u;
231  
232 <        while (*cp) if (*cp++ != *s++) return(0);
233 <        while (isspace(*s)) s++;
234 <        if (!*s) return(0);
221 <        if (r == NULL) return(1);
222 <        do
223 <                *r++ = *s++;
224 <        while(*s && !isspace(*s));
225 <        *r = '\0';
226 <        return(1);
232 >        u.i = 1;
233 >
234 >        return(u.c[0] == 0);
235   }
236  
237  
238   int
239 < isformat(s)                     /* is line a format line? */
240 < char  *s;
239 > isbigendian(            /* header line says "BigEndian=1" (-1 if irrelevant) */
240 >        const char *s
241 > )
242   {
243 <        return(formatval(NULL, s));
243 >        const char      *be = BIGEND;
244 >
245 >        while ((*s != '\0') & (*be != '=') && *s++ == *be)
246 >                ++be;
247 >        if (*be != '=')
248 >                return(-1);     /* irrelevant */
249 >        while (isspace(*s))
250 >                s++;
251 >        if (*s++ != '=')
252 >                return(-1);
253 >        while (isspace(*s))
254 >                s++;
255 >        return(*s == '1');
256   }
257  
258  
259   void
260 < fputformat(s, fp)               /* put out a format value */
261 < char  *s;
262 < FILE  *fp;
260 > fputendian(             /* write native endianness in BigEndian= line */
261 >        FILE *fp
262 > )
263   {
264 <        fputs(FMTSTR, fp);
265 <        fputs(s, fp);
266 <        putc('\n', fp);
264 >        fputs(BIGEND, fp);
265 >        if (nativebigendian())
266 >                fputs("1\n", fp);
267 >        else
268 >                fputs("0\n", fp);
269   }
270  
271  
272   int
273 < getheader(fp, f, p)             /* get header from file */
274 < FILE  *fp;
275 < int  (*f)();
276 < char  *p;
273 > getheader(              /* get header from file */
274 >        FILE  *fp,
275 >        gethfunc *f,
276 >        void  *p
277 > )
278   {
279 +        int   rtotal = 0;
280          char  buf[MAXLINE];
281 +        int   firstc = fgetc(fp);
282  
283 +        if (!isprint(firstc))
284 +                return(-1);                             /* messed up */
285 +        ungetc(firstc, fp);
286          for ( ; ; ) {
287 +                int     rval = 0;
288                  buf[MAXLINE-2] = '\n';
289                  if (fgets(buf, MAXLINE, fp) == NULL)
290                          return(-1);
291 <                if (buf[0] == '\n')
292 <                        return(0);
263 < #ifdef MSDOS
264 <                if (buf[0] == '\r' && buf[1] == '\n')
265 <                        return(0);
266 < #endif
291 >                if (buf[buf[0]=='\r'] == '\n')          /* end of header? */
292 >                        return(rtotal);
293                  if (buf[MAXLINE-2] != '\n') {
294                          ungetc(buf[MAXLINE-2], fp);     /* prevent false end */
295                          buf[MAXLINE-2] = '\0';
296                  }
297 <                if (f != NULL && (*f)(buf, p) < 0)
297 >                if (f != NULL && (rval = (*f)(buf, p)) < 0)
298                          return(-1);
299 +                rtotal += rval;
300          }
301   }
302  
303  
304   struct check {
305          FILE    *fp;
306 <        char    fs[64];
306 >        char    fs[MAXFMTLEN];
307   };
308  
309  
310   static int
311 < mycheck(s, cp)                  /* check a header line for format info. */
312 < char  *s;
313 < register struct check  *cp;
311 > mycheck(                        /* check a header line for format info. */
312 >        char  *s,
313 >        void  *cp
314 > )
315   {
316 <        if (!formatval(cp->fs, s) && cp->fp != NULL)
317 <                fputs(s, cp->fp);
316 >        struct check    *scp = (struct check *)cp;
317 >
318 >        if (!formatval(scp->fs, s) && scp->fp != NULL)
319 >                return(fputs(s, scp->fp));
320 >
321          return(0);
322   }
323  
324  
325   int
326 < globmatch(p, s)                 /* check for match of s against pattern p */
327 < register char   *p, *s;
326 > globmatch(                      /* check for match of s against pattern p */
327 >        const char      *p,
328 >        const char      *s
329 > )
330   {
331          int     setmatch;
332  
# Line 306 | Line 339 | register char  *p, *s;
339                  case '*':                       /* match any string */
340                          while (p[1] == '*') p++;
341                          do
342 <                                if ( (p[1]=='?' || p[1]==*s) &&
342 >                                if ( (p[1]=='?') | (p[1]==*s) &&
343                                                  globmatch(p+1,s) )
344                                          return(1);
345                          while (*s++);
346                          return(0);
347                  case '[':                       /* character set */
348 <                        setmatch = *s == *++p;
348 >                        setmatch = (*s == *++p);
349                          if (!*p)
350                                  return(0);
351                          while (*++p != ']') {
352                                  if (!*p)
353                                          return(0);
354                                  if (*p == '-') {
355 <                                        setmatch += p[-1] <= *s && *s <= p[1];
355 >                                        setmatch += (p[-1] <= *s) & (*s <= p[1]);
356                                          if (!*++p)
357                                                  break;
358                                  } else
359 <                                        setmatch += *p == *s;
359 >                                        setmatch += (*p == *s);
360                          }
361                          if (!setmatch)
362                                  return(0);
363                          s++;
364                          break;
365                  case '\\':                      /* literal next */
366 <                        p++;
366 >                        if (!*++p)
367 >                                return(0);
368                  /* fall through */
369                  default:                        /* normal character */
370                          if (*p != *s)
# Line 358 | Line 392 | register char  *p, *s;
392   */
393  
394   int
395 < checkheader(fin, fmt, fout)
396 < FILE  *fin;
397 < char  *fmt;
398 < FILE  *fout;
395 > checkheader(
396 >        FILE  *fin,
397 >        char  fmt[MAXFMTLEN],
398 >        FILE  *fout
399 > )
400   {
401          struct check    cdat;
402 <        register char   *cp;
402 >        char    *cp;
403  
404          cdat.fp = fout;
405          cdat.fs[0] = '\0';
# Line 373 | Line 408 | FILE  *fout;
408          if (!cdat.fs[0])
409                  return(0);
410          for (cp = fmt; *cp; cp++)               /* check for globbing */
411 <                if (*cp == '?' | *cp == '*')
411 >                if ((*cp == '?') | (*cp == '*')) {
412                          if (globmatch(fmt, cdat.fs)) {
413                                  strcpy(fmt, cdat.fs);
414                                  return(1);
415                          } else
416                                  return(-1);
417 +                }
418          return(strcmp(fmt, cdat.fs) ? -1 : 1);  /* literal match */
419   }

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