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#ifndef lint |
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static const char RCSid[] = "$Id: duphead.c,v 2.4 2003/02/25 02:47:22 greg Exp $"; |
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#endif |
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/* |
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* Duplicate header on stdout. |
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* |
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* Externals declared in ray.h |
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*/ |
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|
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#include "copyright.h" |
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|
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#include "standard.h" |
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#include "paths.h" |
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|
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|
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int headismine = 1; /* true if header file belongs to me */ |
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|
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static char *headfname = NULL; /* temp file name */ |
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static FILE *headfp = NULL; /* temp file pointer */ |
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|
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|
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void |
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headclean() /* remove header temp file (if one) */ |
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{ |
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if (headfname == NULL) |
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return; |
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if (headfp != NULL) |
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fclose(headfp); |
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if (headismine) |
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unlink(headfname); |
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} |
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|
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|
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void |
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openheader() /* save standard output to header file */ |
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{ |
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static char template[] = TEMPLATE; |
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|
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headfname = mktemp(template); |
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if (freopen(headfname, "w", stdout) == NULL) { |
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sprintf(errmsg, "cannot open header file \"%s\"", headfname); |
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error(SYSTEM, errmsg); |
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} |
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} |
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|
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|
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void |
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dupheader() /* repeat header on standard output */ |
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{ |
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register int c; |
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|
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if (headfp == NULL) { |
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if ((headfp = fopen(headfname, "r")) == NULL) |
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error(SYSTEM, "error reopening header file"); |
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SET_FILE_BINARY(headfp); |
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} else if (fseek(headfp, 0L, 0) < 0) |
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error(SYSTEM, "seek error on header file"); |
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while ((c = getc(headfp)) != EOF) |
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putchar(c); |
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} |
