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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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|
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/* |
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* Read and write image resolutions. |
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*/ |
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|
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#include <stdio.h> |
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|
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#include "color.h" |
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|
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|
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fputresolu(ord, xres, yres, fp) /* put x and y resolution */ |
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register int ord; |
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int xres, yres; |
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FILE *fp; |
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{ |
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if (ord&YMAJOR) |
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fprintf(fp, "%cY %d %cX %d\n", |
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ord&YDECR ? '-' : '+', yres, |
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ord&XDECR ? '-' : '+', xres); |
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else |
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fprintf(fp, "%cX %d %cY %d\n", |
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ord&XDECR ? '-' : '+', xres, |
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ord&YDECR ? '-' : '+', yres); |
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} |
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|
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|
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fgetresolu(xrp, yrp, fp) /* get x and y resolution */ |
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int *xrp, *yrp; |
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FILE *fp; |
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{ |
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char buf[64], *xndx, *yndx; |
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register char *cp; |
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register int ord; |
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|
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if (fgets(buf, sizeof(buf), fp) == NULL) |
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return(-1); |
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xndx = yndx = NULL; |
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for (cp = buf+1; *cp; cp++) |
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if (*cp == 'X') |
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xndx = cp; |
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else if (*cp == 'Y') |
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yndx = cp; |
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if (xndx == NULL || yndx == NULL) |
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return(-1); |
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ord = 0; |
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if (xndx > yndx) ord |= YMAJOR; |
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if (xndx[-1] == '-') ord |= XDECR; |
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if (yndx[-1] == '-') ord |= YDECR; |
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if ((*xrp = atoi(xndx+1)) <= 0) |
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return(-1); |
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if ((*yrp = atoi(yndx+1)) <= 0) |
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return(-1); |
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return(ord); |
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} |
