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/* |
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* header.c - routines for reading and writing information headers. |
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* |
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< |
* Externals declared in resolu.h |
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> |
* Externals declared in rtio.h |
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* |
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* newheader(t,fp) start new information header identified by string t |
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* headidval(r,s) copy header identifier value in s to r |
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* gmtval(t,s) get GMT as UTC |
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* fputdate(t,fp) put out the given UTC |
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* fputnow(fp) put out the current date and time |
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* printargs(ac,av,fp) print an argument list to fp, followed by '\n' |
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* formatval(r,s) copy the format value in s to r |
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* fputformat(s,fp) write "FORMAT=%s" to fp |
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* nativebigendian() are we native on big-endian machine? |
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* isbigendian(s) header line matches "BigEndian=1" (-1 if irrelevant) |
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* fputendian(fp) write native endianness in BigEndian= line |
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* getheader(fp,f,p) read header from fp, calling f(s,p) on each line |
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* globmatch(pat, str) check for glob match of str against pat |
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* checkheader(i,p,o) check header format from i against p and copy to o |
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|
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#include <ctype.h> |
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|
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#include "tiff.h" /* for int32 */ |
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#include "rtio.h" |
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#include "color.h" |
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#include "resolu.h" |
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|
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#define MAXLINE 2048 |
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const char TMSTR[] = "CAPDATE="; /* capture date identifier */ |
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const char GMTSTR[] = "GMT="; /* GMT identifier */ |
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|
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const char BIGEND[] = "BigEndian="; /* big-endian variable */ |
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|
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static gethfunc mycheck; |
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|
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|
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void |
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newheader( /* identifying line of information header */ |
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char *s, |
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const char *s, |
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FILE *fp |
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) |
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{ |
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fputs(HDRSTR, fp); |
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fputs(s, fp); |
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putc('\n', fp); |
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fputc('\n', fp); |
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} |
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|
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|
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int |
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headidval( /* get header id (return true if is id) */ |
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char *r, |
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char *s |
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const char *s |
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) |
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{ |
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const char *cp = HDRSTR; |
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int |
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dateval( /* convert capture date line to UTC */ |
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time_t *tloc, |
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char *s |
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const char *s |
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) |
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{ |
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struct tm tms; |
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int |
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gmtval( /* convert GMT date line to UTC */ |
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time_t *tloc, |
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char *s |
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const char *s |
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) |
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{ |
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struct tm tms; |
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} |
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|
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|
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void |
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printargs( /* print arguments to a file */ |
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int ac, |
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char **av, |
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FILE *fp |
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) |
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{ |
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while (ac-- > 0) { |
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fputword(*av++, fp); |
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fputc(ac ? ' ' : '\n', fp); |
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} |
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} |
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|
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|
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int |
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formatval( /* get format value (return true if format) */ |
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char *r, |
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char *s |
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char fmt[MAXFMTLEN], |
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const char *s |
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) |
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{ |
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const char *cp = FMTSTR; |
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|
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char *r = fmt; |
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/* check against format string */ |
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while (*cp) if (*cp++ != *s++) return(0); |
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while (isspace(*s)) s++; |
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if (!*s) return(0); |
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if (r == NULL) return(1); |
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do |
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if (r == NULL) /* just checking if format? */ |
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return(1); |
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do /* copy format ID */ |
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*r++ = *s++; |
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while (*s && !isspace(*s)); |
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*r = '\0'; |
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while (*s && r-fmt < MAXFMTLEN-1); |
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|
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do /* remove trailing white space */ |
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*r-- = '\0'; |
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while (r > fmt && isspace(*r)); |
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|
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return(1); |
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} |
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|
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|
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void |
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fputformat( /* put out a format value */ |
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< |
char *s, |
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> |
const char *s, |
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FILE *fp |
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) |
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{ |
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int align = 0; |
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|
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fputs(FMTSTR, fp); |
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fputs(s, fp); |
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putc('\n', fp); |
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> |
/* pad to align binary type for mmap() */ |
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if (globmatch(PICFMT, s)) |
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align = 0; /* not needed for picture data */ |
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else if (!strncmp("float", s, 5)) |
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align = sizeof(float); |
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else if (!strncmp("double", s, 6)) |
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align = sizeof(double); |
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else if (!strncmp("16-bit", s, 6)) |
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align = 2; |
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else if (!strncmp("32-bit", s, 6)) |
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align = 4; |
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else if (!strncmp("64-bit", s, 6)) |
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align = 8; |
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if (align) { |
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long pos = ftell(fp); |
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if (pos >= 0) { |
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pos = (pos + 2) % align; |
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if (pos) align -= pos; |
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else align = 0; |
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} else |
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align = 0; |
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} |
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while (align-- > 0) |
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putc(' ', fp); |
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fputc('\n', fp); |
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} |
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|
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|
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int |
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nativebigendian() /* are we native on a big-endian machine? */ |
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{ |
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union { int32 i; char c[4]; } u; |
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|
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u.i = 1; |
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|
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return(u.c[0] == 0); |
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} |
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+ |
|
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|
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int |
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isbigendian( /* header line says "BigEndian=1" (-1 if irrelevant) */ |
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+ |
const char *s |
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) |
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{ |
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+ |
const char *be = BIGEND; |
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|
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while ((*s != '\0') & (*be != '=') && *s++ == *be) |
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++be; |
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if (*be != '=') |
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return(-1); /* irrelevant */ |
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while (isspace(*s)) |
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s++; |
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if (*s++ != '=') |
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return(-1); |
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while (isspace(*s)) |
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s++; |
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return(*s == '1'); |
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} |
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+ |
|
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+ |
|
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void |
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fputendian( /* write native endianness in BigEndian= line */ |
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FILE *fp |
| 262 |
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) |
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{ |
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fputs(BIGEND, fp); |
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if (nativebigendian()) |
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fputs("1\n", fp); |
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else |
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fputs("0\n", fp); |
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} |
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+ |
|
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+ |
|
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+ |
int |
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getheader( /* get header from file */ |
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FILE *fp, |
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gethfunc *f, |
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void *p |
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|
) |
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{ |
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+ |
int rtotal = 0; |
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|
char buf[MAXLINE]; |
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+ |
int firstc = fgetc(fp); |
| 282 |
|
|
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+ |
if (!isprint(firstc)) |
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+ |
return(-1); /* messed up */ |
| 285 |
+ |
ungetc(firstc, fp); |
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for ( ; ; ) { |
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+ |
int rval = 0; |
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|
buf[MAXLINE-2] = '\n'; |
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|
if (fgets(buf, MAXLINE, fp) == NULL) |
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|
return(-1); |
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< |
if (buf[buf[0]=='\r'] == '\n') |
| 292 |
< |
return(0); |
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> |
if (buf[buf[0]=='\r'] == '\n') /* end of header? */ |
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> |
return(rtotal); |
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|
if (buf[MAXLINE-2] != '\n') { |
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ungetc(buf[MAXLINE-2], fp); /* prevent false end */ |
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buf[MAXLINE-2] = '\0'; |
| 296 |
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} |
| 297 |
< |
if (f != NULL && (*f)(buf, p) < 0) |
| 297 |
> |
if (f != NULL && (rval = (*f)(buf, p)) < 0) |
| 298 |
|
return(-1); |
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+ |
rtotal += rval; |
| 300 |
|
} |
| 301 |
|
} |
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|
|
| 303 |
|
|
| 304 |
|
struct check { |
| 305 |
|
FILE *fp; |
| 306 |
< |
char fs[64]; |
| 306 |
> |
char fs[MAXFMTLEN]; |
| 307 |
|
}; |
| 308 |
|
|
| 309 |
|
|
| 313 |
|
void *cp |
| 314 |
|
) |
| 315 |
|
{ |
| 316 |
< |
if (!formatval(((struct check*)cp)->fs, s) |
| 317 |
< |
&& ((struct check*)cp)->fp != NULL) { |
| 318 |
< |
fputs(s, ((struct check*)cp)->fp); |
| 319 |
< |
} |
| 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 |
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return(0); |
| 322 |
|
} |
| 323 |
|
|
| 324 |
|
|
| 325 |
|
int |
| 326 |
|
globmatch( /* check for match of s against pattern p */ |
| 327 |
< |
char *p, |
| 328 |
< |
char *s |
| 327 |
> |
const char *p, |
| 328 |
> |
const char *s |
| 329 |
|
) |
| 330 |
|
{ |
| 331 |
|
int setmatch; |
| 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 |
| 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) |
| 394 |
|
int |
| 395 |
|
checkheader( |
| 396 |
|
FILE *fin, |
| 397 |
< |
char *fmt, |
| 397 |
> |
char fmt[MAXFMTLEN], |
| 398 |
|
FILE *fout |
| 399 |
|
) |
| 400 |
|
{ |