1 |
greg |
1.1 |
#ifndef lint |
2 |
greg |
2.37 |
static const char RCSid[] = "$Id: header.c,v 2.36 2019/08/14 18:20:02 greg Exp $"; |
3 |
greg |
1.1 |
#endif |
4 |
|
|
/* |
5 |
|
|
* header.c - routines for reading and writing information headers. |
6 |
|
|
* |
7 |
greg |
2.35 |
* Externals declared in rtio.h |
8 |
greg |
1.3 |
* |
9 |
greg |
2.4 |
* newheader(t,fp) start new information header identified by string t |
10 |
|
|
* headidval(r,s) copy header identifier value in s to r |
11 |
greg |
2.25 |
* 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 |
greg |
2.11 |
* fputnow(fp) put out the current date and time |
15 |
greg |
2.3 |
* printargs(ac,av,fp) print an argument list to fp, followed by '\n' |
16 |
greg |
1.3 |
* formatval(r,s) copy the format value in s to r |
17 |
|
|
* fputformat(s,fp) write "FORMAT=%s" to fp |
18 |
greg |
2.36 |
* nativebigendian() are we native on big-endian machine? |
19 |
|
|
* isbigendian(s) header line matches "BigEndian=1" (-1 if irrelevant) |
20 |
|
|
* fputendian(fp) write native endianness in BigEndian= line |
21 |
greg |
1.3 |
* getheader(fp,f,p) read header from fp, calling f(s,p) on each line |
22 |
greg |
2.6 |
* globmatch(pat, str) check for glob match of str against pat |
23 |
greg |
1.3 |
* checkheader(i,p,o) check header format from i against p and copy to o |
24 |
|
|
* |
25 |
|
|
* To copy header from input to output, use getheader(fin, fputs, fout) |
26 |
greg |
1.1 |
*/ |
27 |
|
|
|
28 |
greg |
2.12 |
#include "copyright.h" |
29 |
greg |
2.11 |
|
30 |
greg |
1.3 |
#include <ctype.h> |
31 |
schorsch |
2.17 |
|
32 |
greg |
2.36 |
#include "tiff.h" /* for int32 */ |
33 |
greg |
2.18 |
#include "rtio.h" |
34 |
|
|
#include "resolu.h" |
35 |
schorsch |
2.14 |
|
36 |
greg |
2.24 |
#define MAXLINE 2048 |
37 |
greg |
2.2 |
|
38 |
greg |
2.26 |
extern time_t timegm(struct tm *tm); |
39 |
|
|
|
40 |
greg |
2.25 |
const char HDRSTR[] = "#?"; /* information header magic number */ |
41 |
greg |
1.2 |
|
42 |
greg |
2.25 |
const char FMTSTR[] = "FORMAT="; /* format identifier */ |
43 |
greg |
1.2 |
|
44 |
greg |
2.25 |
const char TMSTR[] = "CAPDATE="; /* capture date identifier */ |
45 |
|
|
const char GMTSTR[] = "GMT="; /* GMT identifier */ |
46 |
greg |
2.16 |
|
47 |
greg |
2.36 |
const char BIGEND[] = "BigEndian="; /* big-endian variable */ |
48 |
|
|
|
49 |
schorsch |
2.22 |
static gethfunc mycheck; |
50 |
greg |
2.4 |
|
51 |
greg |
2.11 |
|
52 |
greg |
2.29 |
void |
53 |
schorsch |
2.22 |
newheader( /* identifying line of information header */ |
54 |
greg |
2.31 |
const char *s, |
55 |
greg |
2.25 |
FILE *fp |
56 |
schorsch |
2.22 |
) |
57 |
greg |
2.4 |
{ |
58 |
|
|
fputs(HDRSTR, fp); |
59 |
|
|
fputs(s, fp); |
60 |
|
|
putc('\n', fp); |
61 |
|
|
} |
62 |
|
|
|
63 |
|
|
|
64 |
greg |
2.29 |
int |
65 |
schorsch |
2.22 |
headidval( /* get header id (return true if is id) */ |
66 |
greg |
2.25 |
char *r, |
67 |
greg |
2.31 |
const char *s |
68 |
schorsch |
2.22 |
) |
69 |
greg |
2.4 |
{ |
70 |
greg |
2.25 |
const char *cp = HDRSTR; |
71 |
greg |
2.4 |
|
72 |
|
|
while (*cp) if (*cp++ != *s++) return(0); |
73 |
|
|
if (r == NULL) return(1); |
74 |
gregl |
2.9 |
while (*s && !isspace(*s)) *r++ = *s++; |
75 |
greg |
2.4 |
*r = '\0'; |
76 |
|
|
return(1); |
77 |
|
|
} |
78 |
|
|
|
79 |
|
|
|
80 |
greg |
2.29 |
int |
81 |
greg |
2.25 |
dateval( /* convert capture date line to UTC */ |
82 |
schorsch |
2.22 |
time_t *tloc, |
83 |
greg |
2.31 |
const char *s |
84 |
schorsch |
2.22 |
) |
85 |
greg |
2.11 |
{ |
86 |
|
|
struct tm tms; |
87 |
greg |
2.25 |
const char *cp = TMSTR; |
88 |
greg |
2.11 |
|
89 |
|
|
while (*cp) if (*cp++ != *s++) return(0); |
90 |
|
|
while (isspace(*s)) s++; |
91 |
|
|
if (!*s) return(0); |
92 |
|
|
if (sscanf(s, "%d:%d:%d %d:%d:%d", |
93 |
|
|
&tms.tm_year, &tms.tm_mon, &tms.tm_mday, |
94 |
|
|
&tms.tm_hour, &tms.tm_min, &tms.tm_sec) != 6) |
95 |
|
|
return(0); |
96 |
|
|
if (tloc == NULL) |
97 |
|
|
return(1); |
98 |
|
|
tms.tm_mon--; |
99 |
|
|
tms.tm_year -= 1900; |
100 |
|
|
tms.tm_isdst = -1; /* ask mktime() to figure out DST */ |
101 |
|
|
*tloc = mktime(&tms); |
102 |
|
|
return(1); |
103 |
|
|
} |
104 |
|
|
|
105 |
|
|
|
106 |
greg |
2.29 |
int |
107 |
greg |
2.25 |
gmtval( /* convert GMT date line to UTC */ |
108 |
|
|
time_t *tloc, |
109 |
greg |
2.31 |
const char *s |
110 |
schorsch |
2.22 |
) |
111 |
greg |
2.11 |
{ |
112 |
greg |
2.25 |
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 |
greg |
2.11 |
} |
129 |
|
|
|
130 |
|
|
|
131 |
greg |
2.29 |
void |
132 |
greg |
2.25 |
fputdate( /* write out the given time value (local & GMT) */ |
133 |
schorsch |
2.22 |
time_t tv, |
134 |
|
|
FILE *fp |
135 |
|
|
) |
136 |
greg |
2.11 |
{ |
137 |
greg |
2.25 |
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 |
greg |
2.11 |
} |
150 |
|
|
|
151 |
|
|
|
152 |
greg |
2.29 |
void |
153 |
schorsch |
2.22 |
fputnow( /* write out the current time */ |
154 |
|
|
FILE *fp |
155 |
|
|
) |
156 |
greg |
2.11 |
{ |
157 |
|
|
time_t tv; |
158 |
|
|
time(&tv); |
159 |
|
|
fputdate(tv, fp); |
160 |
|
|
} |
161 |
|
|
|
162 |
|
|
|
163 |
greg |
2.29 |
void |
164 |
schorsch |
2.22 |
printargs( /* print arguments to a file */ |
165 |
|
|
int ac, |
166 |
|
|
char **av, |
167 |
|
|
FILE *fp |
168 |
|
|
) |
169 |
greg |
1.1 |
{ |
170 |
|
|
while (ac-- > 0) { |
171 |
greg |
2.11 |
fputword(*av++, fp); |
172 |
|
|
fputc(ac ? ' ' : '\n', fp); |
173 |
greg |
1.1 |
} |
174 |
|
|
} |
175 |
|
|
|
176 |
|
|
|
177 |
greg |
2.29 |
int |
178 |
schorsch |
2.22 |
formatval( /* get format value (return true if format) */ |
179 |
greg |
2.32 |
char fmt[MAXFMTLEN], |
180 |
greg |
2.31 |
const char *s |
181 |
schorsch |
2.22 |
) |
182 |
greg |
1.2 |
{ |
183 |
greg |
2.25 |
const char *cp = FMTSTR; |
184 |
greg |
2.32 |
char *r = fmt; |
185 |
greg |
2.4 |
|
186 |
|
|
while (*cp) if (*cp++ != *s++) return(0); |
187 |
greg |
1.3 |
while (isspace(*s)) s++; |
188 |
greg |
2.4 |
if (!*s) return(0); |
189 |
|
|
if (r == NULL) return(1); |
190 |
greg |
2.5 |
do |
191 |
|
|
*r++ = *s++; |
192 |
greg |
2.32 |
while (*s && !isspace(*s) && r-fmt < MAXFMTLEN-1); |
193 |
greg |
1.2 |
*r = '\0'; |
194 |
greg |
2.4 |
return(1); |
195 |
greg |
1.2 |
} |
196 |
|
|
|
197 |
|
|
|
198 |
greg |
2.29 |
void |
199 |
schorsch |
2.22 |
fputformat( /* put out a format value */ |
200 |
greg |
2.31 |
const char *s, |
201 |
schorsch |
2.22 |
FILE *fp |
202 |
|
|
) |
203 |
greg |
1.2 |
{ |
204 |
|
|
fputs(FMTSTR, fp); |
205 |
|
|
fputs(s, fp); |
206 |
|
|
putc('\n', fp); |
207 |
|
|
} |
208 |
|
|
|
209 |
|
|
|
210 |
greg |
2.29 |
int |
211 |
greg |
2.36 |
nativebigendian() /* are we native on a big-endian machine? */ |
212 |
|
|
{ |
213 |
|
|
union { int32 i; char c[4]; } u; |
214 |
|
|
|
215 |
|
|
u.i = 1; |
216 |
|
|
|
217 |
|
|
return(u.c[0] == 0); |
218 |
|
|
} |
219 |
|
|
|
220 |
|
|
|
221 |
|
|
int |
222 |
|
|
isbigendian( /* header line says "BigEndian=1" (-1 if irrelevant) */ |
223 |
|
|
const char *s |
224 |
|
|
) |
225 |
|
|
{ |
226 |
|
|
const char *be = BIGEND; |
227 |
|
|
|
228 |
greg |
2.37 |
while ((*s != '\0') & (*be != '=') && *s++ == *be) |
229 |
greg |
2.36 |
++be; |
230 |
|
|
if (*be != '=') |
231 |
|
|
return(-1); /* irrelevant */ |
232 |
|
|
while (isspace(*s)) |
233 |
|
|
s++; |
234 |
|
|
if (*s++ != '=') |
235 |
|
|
return(-1); |
236 |
|
|
while (isspace(*s)) |
237 |
|
|
s++; |
238 |
|
|
return(*s == '1'); |
239 |
|
|
} |
240 |
|
|
|
241 |
|
|
|
242 |
|
|
void |
243 |
|
|
fputendian( /* write native endianness in BigEndian= line */ |
244 |
|
|
FILE *fp |
245 |
|
|
) |
246 |
|
|
{ |
247 |
|
|
fputs(BIGEND, fp); |
248 |
|
|
if (nativebigendian()) |
249 |
|
|
fputs("1\n", fp); |
250 |
|
|
else |
251 |
|
|
fputs("0\n", fp); |
252 |
|
|
} |
253 |
|
|
|
254 |
|
|
|
255 |
|
|
int |
256 |
schorsch |
2.22 |
getheader( /* get header from file */ |
257 |
|
|
FILE *fp, |
258 |
|
|
gethfunc *f, |
259 |
|
|
void *p |
260 |
|
|
) |
261 |
greg |
1.1 |
{ |
262 |
greg |
2.30 |
int rtotal = 0; |
263 |
greg |
1.1 |
char buf[MAXLINE]; |
264 |
greg |
2.34 |
int firstc = fgetc(fp); |
265 |
greg |
1.1 |
|
266 |
greg |
2.34 |
if (!isprint(firstc)) |
267 |
|
|
return(-1); /* messed up */ |
268 |
|
|
ungetc(firstc, fp); |
269 |
greg |
1.1 |
for ( ; ; ) { |
270 |
greg |
2.30 |
int rval = 0; |
271 |
greg |
1.1 |
buf[MAXLINE-2] = '\n'; |
272 |
greg |
2.3 |
if (fgets(buf, MAXLINE, fp) == NULL) |
273 |
greg |
1.1 |
return(-1); |
274 |
greg |
2.34 |
if (buf[buf[0]=='\r'] == '\n') /* end of header? */ |
275 |
greg |
2.30 |
return(rtotal); |
276 |
greg |
1.1 |
if (buf[MAXLINE-2] != '\n') { |
277 |
|
|
ungetc(buf[MAXLINE-2], fp); /* prevent false end */ |
278 |
|
|
buf[MAXLINE-2] = '\0'; |
279 |
|
|
} |
280 |
greg |
2.30 |
if (f != NULL && (rval = (*f)(buf, p)) < 0) |
281 |
gwlarson |
2.10 |
return(-1); |
282 |
greg |
2.30 |
rtotal += rval; |
283 |
greg |
1.1 |
} |
284 |
|
|
} |
285 |
|
|
|
286 |
|
|
|
287 |
greg |
1.2 |
struct check { |
288 |
|
|
FILE *fp; |
289 |
greg |
2.32 |
char fs[MAXFMTLEN]; |
290 |
greg |
1.2 |
}; |
291 |
greg |
1.1 |
|
292 |
greg |
1.2 |
|
293 |
greg |
2.11 |
static int |
294 |
schorsch |
2.22 |
mycheck( /* check a header line for format info. */ |
295 |
|
|
char *s, |
296 |
|
|
void *cp |
297 |
|
|
) |
298 |
|
|
{ |
299 |
greg |
2.33 |
struct check *scp = (struct check *)cp; |
300 |
|
|
|
301 |
|
|
if (!formatval(scp->fs, s) && scp->fp != NULL) |
302 |
|
|
fputs(s, scp->fp); |
303 |
|
|
|
304 |
greg |
2.11 |
return(0); |
305 |
greg |
1.1 |
} |
306 |
|
|
|
307 |
|
|
|
308 |
greg |
2.29 |
int |
309 |
schorsch |
2.22 |
globmatch( /* check for match of s against pattern p */ |
310 |
greg |
2.31 |
const char *p, |
311 |
|
|
const char *s |
312 |
schorsch |
2.22 |
) |
313 |
greg |
1.3 |
{ |
314 |
greg |
2.11 |
int setmatch; |
315 |
greg |
1.3 |
|
316 |
|
|
do { |
317 |
|
|
switch (*p) { |
318 |
|
|
case '?': /* match any character */ |
319 |
|
|
if (!*s++) |
320 |
|
|
return(0); |
321 |
|
|
break; |
322 |
|
|
case '*': /* match any string */ |
323 |
|
|
while (p[1] == '*') p++; |
324 |
|
|
do |
325 |
greg |
2.28 |
if ( (p[1]=='?') | (p[1]==*s) && |
326 |
greg |
2.6 |
globmatch(p+1,s) ) |
327 |
greg |
1.3 |
return(1); |
328 |
|
|
while (*s++); |
329 |
|
|
return(0); |
330 |
greg |
2.11 |
case '[': /* character set */ |
331 |
|
|
setmatch = *s == *++p; |
332 |
|
|
if (!*p) |
333 |
|
|
return(0); |
334 |
|
|
while (*++p != ']') { |
335 |
|
|
if (!*p) |
336 |
|
|
return(0); |
337 |
|
|
if (*p == '-') { |
338 |
greg |
2.28 |
setmatch += (p[-1] <= *s && *s <= p[1]); |
339 |
greg |
2.11 |
if (!*++p) |
340 |
|
|
break; |
341 |
|
|
} else |
342 |
greg |
2.28 |
setmatch += (*p == *s); |
343 |
greg |
2.11 |
} |
344 |
|
|
if (!setmatch) |
345 |
|
|
return(0); |
346 |
|
|
s++; |
347 |
|
|
break; |
348 |
greg |
1.3 |
case '\\': /* literal next */ |
349 |
|
|
p++; |
350 |
|
|
/* fall through */ |
351 |
|
|
default: /* normal character */ |
352 |
|
|
if (*p != *s) |
353 |
|
|
return(0); |
354 |
|
|
s++; |
355 |
|
|
break; |
356 |
|
|
} |
357 |
|
|
} while (*p++); |
358 |
|
|
return(1); |
359 |
|
|
} |
360 |
|
|
|
361 |
|
|
|
362 |
|
|
/* |
363 |
|
|
* Checkheader(fin,fmt,fout) returns a value of 1 if the input format |
364 |
|
|
* matches the specification in fmt, 0 if no input format was found, |
365 |
|
|
* and -1 if the input format does not match or there is an |
366 |
greg |
1.4 |
* error reading the header. If fmt is empty, then -1 is returned |
367 |
greg |
1.3 |
* if any input format is found (or there is an error), and 0 otherwise. |
368 |
|
|
* If fmt contains any '*' or '?' characters, then checkheader |
369 |
|
|
* does wildcard expansion and copies a matching result into fmt. |
370 |
greg |
2.7 |
* Be sure that fmt is big enough to hold the match in such cases, |
371 |
|
|
* and that it is not a static, read-only string! |
372 |
greg |
1.3 |
* The input header (minus any format lines) is copied to fout |
373 |
|
|
* if fout is not NULL. |
374 |
|
|
*/ |
375 |
|
|
|
376 |
greg |
2.29 |
int |
377 |
schorsch |
2.22 |
checkheader( |
378 |
|
|
FILE *fin, |
379 |
greg |
2.32 |
char fmt[MAXFMTLEN], |
380 |
schorsch |
2.22 |
FILE *fout |
381 |
|
|
) |
382 |
greg |
1.1 |
{ |
383 |
greg |
1.2 |
struct check cdat; |
384 |
greg |
2.25 |
char *cp; |
385 |
greg |
1.2 |
|
386 |
|
|
cdat.fp = fout; |
387 |
|
|
cdat.fs[0] = '\0'; |
388 |
schorsch |
2.22 |
if (getheader(fin, mycheck, &cdat) < 0) |
389 |
greg |
1.3 |
return(-1); |
390 |
greg |
2.6 |
if (!cdat.fs[0]) |
391 |
|
|
return(0); |
392 |
greg |
2.7 |
for (cp = fmt; *cp; cp++) /* check for globbing */ |
393 |
schorsch |
2.20 |
if ((*cp == '?') | (*cp == '*')) { |
394 |
greg |
2.7 |
if (globmatch(fmt, cdat.fs)) { |
395 |
|
|
strcpy(fmt, cdat.fs); |
396 |
|
|
return(1); |
397 |
|
|
} else |
398 |
|
|
return(-1); |
399 |
schorsch |
2.19 |
} |
400 |
greg |
2.7 |
return(strcmp(fmt, cdat.fs) ? -1 : 1); /* literal match */ |
401 |
greg |
1.1 |
} |